Dave Chinner | 0b61f8a | 2018-06-05 19:42:14 -0700 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | /* |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 3 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 4 | * All Rights Reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | #include "xfs.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 7 | #include "xfs_fs.h" |
Dave Chinner | 70a9883 | 2013-10-23 10:36:05 +1100 | [diff] [blame] | 8 | #include "xfs_shared.h" |
Dave Chinner | 239880e | 2013-10-23 10:50:10 +1100 | [diff] [blame] | 9 | #include "xfs_format.h" |
| 10 | #include "xfs_log_format.h" |
| 11 | #include "xfs_trans_resv.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 12 | #include "xfs_bit.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include "xfs_sb.h" |
Dave Chinner | f5ea110 | 2013-04-24 18:58:02 +1000 | [diff] [blame] | 14 | #include "xfs_mount.h" |
Darrick J. Wong | 3ab78df | 2016-08-03 11:15:38 +1000 | [diff] [blame] | 15 | #include "xfs_defer.h" |
Dave Chinner | 2b9ab5a | 2013-08-12 20:49:37 +1000 | [diff] [blame] | 16 | #include "xfs_dir2.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | #include "xfs_inode.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 18 | #include "xfs_btree.h" |
Dave Chinner | 239880e | 2013-10-23 10:50:10 +1100 | [diff] [blame] | 19 | #include "xfs_trans.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | #include "xfs_alloc.h" |
| 21 | #include "xfs_bmap.h" |
Dave Chinner | 6898811 | 2013-08-12 20:49:42 +1000 | [diff] [blame] | 22 | #include "xfs_bmap_util.h" |
Dave Chinner | a4fbe6a | 2013-10-23 10:51:50 +1100 | [diff] [blame] | 23 | #include "xfs_bmap_btree.h" |
Darrick J. Wong | 1392811 | 2023-10-16 09:21:47 -0700 | [diff] [blame] | 24 | #include "xfs_rtbitmap.h" |
Darrick J. Wong | e9e899a | 2017-10-31 12:04:49 -0700 | [diff] [blame] | 25 | #include "xfs_errortag.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include "xfs_error.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include "xfs_quota.h" |
| 28 | #include "xfs_trans_space.h" |
| 29 | #include "xfs_buf_item.h" |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 30 | #include "xfs_trace.h" |
Dave Chinner | a4fbe6a | 2013-10-23 10:51:50 +1100 | [diff] [blame] | 31 | #include "xfs_attr_leaf.h" |
Dave Chinner | a4fbe6a | 2013-10-23 10:51:50 +1100 | [diff] [blame] | 32 | #include "xfs_filestream.h" |
Darrick J. Wong | 340785c | 2016-08-03 11:33:42 +1000 | [diff] [blame] | 33 | #include "xfs_rmap.h" |
Dave Chinner | 9bbafc71 | 2021-06-02 10:48:24 +1000 | [diff] [blame] | 34 | #include "xfs_ag.h" |
Darrick J. Wong | 3fd129b | 2016-09-19 10:30:52 +1000 | [diff] [blame] | 35 | #include "xfs_ag_resv.h" |
Darrick J. Wong | 62aab20 | 2016-10-03 09:11:23 -0700 | [diff] [blame] | 36 | #include "xfs_refcount.h" |
Brian Foster | 974ae92 | 2016-11-28 14:57:42 +1100 | [diff] [blame] | 37 | #include "xfs_icache.h" |
Christoph Hellwig | 4e087a3 | 2019-10-17 13:12:06 -0700 | [diff] [blame] | 38 | #include "xfs_iomap.h" |
Darrick J. Wong | 1196f3f | 2024-02-22 12:31:51 -0800 | [diff] [blame] | 39 | #include "xfs_health.h" |
Darrick J. Wong | 8028411 | 2024-02-22 12:44:21 -0800 | [diff] [blame] | 40 | #include "xfs_bmap_item.h" |
Darrick J. Wong | 622d88e2 | 2024-02-22 12:45:01 -0800 | [diff] [blame] | 41 | #include "xfs_symlink_remote.h" |
Darrick J. Wong | b7c477b | 2024-07-02 11:22:32 -0700 | [diff] [blame] | 42 | #include "xfs_inode_util.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | |
Darrick J. Wong | f3c799c | 2021-10-12 14:11:01 -0700 | [diff] [blame] | 44 | struct kmem_cache *xfs_bmap_intent_cache; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | |
| 46 | /* |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 47 | * Miscellaneous helper functions |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | */ |
| 49 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | /* |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 51 | * Compute and fill in the value of the maximum depth of a bmap btree |
| 52 | * in this filesystem. Done once, during mount. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 54 | void |
| 55 | xfs_bmap_compute_maxlevels( |
| 56 | xfs_mount_t *mp, /* file system mount structure */ |
| 57 | int whichfork) /* data or attr fork */ |
| 58 | { |
Chandan Babu R | 0c35e7b | 2021-11-16 09:20:01 +0000 | [diff] [blame] | 59 | uint64_t maxblocks; /* max blocks at this level */ |
Chandan Babu R | bb1d5049 | 2021-02-26 11:24:31 +0530 | [diff] [blame] | 60 | xfs_extnum_t maxleafents; /* max leaf entries possible */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 61 | int level; /* btree level */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 62 | int maxrootrecs; /* max records in root block */ |
| 63 | int minleafrecs; /* min records in leaf block */ |
| 64 | int minnoderecs; /* min records in node block */ |
| 65 | int sz; /* root block size */ |
| 66 | |
| 67 | /* |
Chandan Babu R | df9ad5c | 2021-11-16 09:54:37 +0000 | [diff] [blame] | 68 | * The maximum number of extents in a fork, hence the maximum number of |
| 69 | * leaf entries, is controlled by the size of the on-disk extent count. |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 70 | * |
Christoph Hellwig | 7821ea3 | 2021-03-29 11:11:44 -0700 | [diff] [blame] | 71 | * Note that we can no longer assume that if we are in ATTR1 that the |
| 72 | * fork offset of all the inodes will be |
| 73 | * (xfs_default_attroffset(ip) >> 3) because we could have mounted with |
| 74 | * ATTR2 and then mounted back with ATTR1, keeping the i_forkoff's fixed |
| 75 | * but probably at various positions. Therefore, for both ATTR1 and |
| 76 | * ATTR2 we have to assume the worst case scenario of a minimum size |
| 77 | * available. |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 78 | */ |
Chandan Babu R | df9ad5c | 2021-11-16 09:54:37 +0000 | [diff] [blame] | 79 | maxleafents = xfs_iext_max_nextents(xfs_has_large_extent_counts(mp), |
| 80 | whichfork); |
Chandan Babu R | 9feb8f1 | 2020-08-27 15:09:10 +0530 | [diff] [blame] | 81 | if (whichfork == XFS_DATA_FORK) |
Darrick J. Wong | 79124b3 | 2024-08-30 15:37:20 -0700 | [diff] [blame] | 82 | sz = xfs_bmdr_space_calc(MINDBTPTRS); |
Chandan Babu R | 9feb8f1 | 2020-08-27 15:09:10 +0530 | [diff] [blame] | 83 | else |
Darrick J. Wong | 79124b3 | 2024-08-30 15:37:20 -0700 | [diff] [blame] | 84 | sz = xfs_bmdr_space_calc(MINABTPTRS); |
Chandan Babu R | 9feb8f1 | 2020-08-27 15:09:10 +0530 | [diff] [blame] | 85 | |
Eric Sandeen | 152d93b | 2014-04-14 18:58:51 +1000 | [diff] [blame] | 86 | maxrootrecs = xfs_bmdr_maxrecs(sz, 0); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 87 | minleafrecs = mp->m_bmap_dmnr[0]; |
| 88 | minnoderecs = mp->m_bmap_dmnr[1]; |
Chandan Babu R | 755c38f | 2021-11-16 07:28:40 +0000 | [diff] [blame] | 89 | maxblocks = howmany_64(maxleafents, minleafrecs); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 90 | for (level = 1; maxblocks > 1; level++) { |
| 91 | if (maxblocks <= maxrootrecs) |
| 92 | maxblocks = 1; |
| 93 | else |
Chandan Babu R | 0c35e7b | 2021-11-16 09:20:01 +0000 | [diff] [blame] | 94 | maxblocks = howmany_64(maxblocks, minnoderecs); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 95 | } |
| 96 | mp->m_bm_maxlevels[whichfork] = level; |
Darrick J. Wong | 0ed5f73 | 2021-09-23 10:32:06 -0700 | [diff] [blame] | 97 | ASSERT(mp->m_bm_maxlevels[whichfork] <= xfs_bmbt_maxlevels_ondisk()); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 98 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | |
Dave Chinner | b294104 | 2021-04-06 07:03:24 -0700 | [diff] [blame] | 100 | unsigned int |
| 101 | xfs_bmap_compute_attr_offset( |
| 102 | struct xfs_mount *mp) |
| 103 | { |
| 104 | if (mp->m_sb.sb_inodesize == 256) |
Darrick J. Wong | 79124b3 | 2024-08-30 15:37:20 -0700 | [diff] [blame] | 105 | return XFS_LITINO(mp) - xfs_bmdr_space_calc(MINABTPTRS); |
| 106 | return xfs_bmdr_space_calc(6 * MINABTPTRS); |
Dave Chinner | b294104 | 2021-04-06 07:03:24 -0700 | [diff] [blame] | 107 | } |
| 108 | |
Christoph Hellwig | fe033cc | 2008-10-30 16:56:09 +1100 | [diff] [blame] | 109 | STATIC int /* error */ |
| 110 | xfs_bmbt_lookup_eq( |
| 111 | struct xfs_btree_cur *cur, |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 112 | struct xfs_bmbt_irec *irec, |
Christoph Hellwig | fe033cc | 2008-10-30 16:56:09 +1100 | [diff] [blame] | 113 | int *stat) /* success/failure */ |
| 114 | { |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 115 | cur->bc_rec.b = *irec; |
Christoph Hellwig | fe033cc | 2008-10-30 16:56:09 +1100 | [diff] [blame] | 116 | return xfs_btree_lookup(cur, XFS_LOOKUP_EQ, stat); |
| 117 | } |
| 118 | |
| 119 | STATIC int /* error */ |
Christoph Hellwig | b5cfbc2 | 2017-10-17 14:16:27 -0700 | [diff] [blame] | 120 | xfs_bmbt_lookup_first( |
Christoph Hellwig | fe033cc | 2008-10-30 16:56:09 +1100 | [diff] [blame] | 121 | struct xfs_btree_cur *cur, |
Christoph Hellwig | fe033cc | 2008-10-30 16:56:09 +1100 | [diff] [blame] | 122 | int *stat) /* success/failure */ |
| 123 | { |
Christoph Hellwig | b5cfbc2 | 2017-10-17 14:16:27 -0700 | [diff] [blame] | 124 | cur->bc_rec.b.br_startoff = 0; |
| 125 | cur->bc_rec.b.br_startblock = 0; |
| 126 | cur->bc_rec.b.br_blockcount = 0; |
Christoph Hellwig | fe033cc | 2008-10-30 16:56:09 +1100 | [diff] [blame] | 127 | return xfs_btree_lookup(cur, XFS_LOOKUP_GE, stat); |
| 128 | } |
| 129 | |
Christoph Hellwig | 278d0ca | 2008-10-30 16:56:32 +1100 | [diff] [blame] | 130 | /* |
Christoph Hellwig | 8096b1e | 2011-12-18 20:00:07 +0000 | [diff] [blame] | 131 | * Check if the inode needs to be converted to btree format. |
| 132 | */ |
| 133 | static inline bool xfs_bmap_needs_btree(struct xfs_inode *ip, int whichfork) |
| 134 | { |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 135 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 136 | |
Darrick J. Wong | 60b4984 | 2016-10-03 09:11:34 -0700 | [diff] [blame] | 137 | return whichfork != XFS_COW_FORK && |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 138 | ifp->if_format == XFS_DINODE_FMT_EXTENTS && |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 139 | ifp->if_nextents > XFS_IFORK_MAXEXT(ip, whichfork); |
Christoph Hellwig | 8096b1e | 2011-12-18 20:00:07 +0000 | [diff] [blame] | 140 | } |
| 141 | |
| 142 | /* |
| 143 | * Check if the inode should be converted to extent format. |
| 144 | */ |
| 145 | static inline bool xfs_bmap_wants_extents(struct xfs_inode *ip, int whichfork) |
| 146 | { |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 147 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 148 | |
Darrick J. Wong | 60b4984 | 2016-10-03 09:11:34 -0700 | [diff] [blame] | 149 | return whichfork != XFS_COW_FORK && |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 150 | ifp->if_format == XFS_DINODE_FMT_BTREE && |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 151 | ifp->if_nextents <= XFS_IFORK_MAXEXT(ip, whichfork); |
Christoph Hellwig | 8096b1e | 2011-12-18 20:00:07 +0000 | [diff] [blame] | 152 | } |
| 153 | |
| 154 | /* |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 155 | * Update the record referred to by cur to the value given by irec |
Christoph Hellwig | 278d0ca | 2008-10-30 16:56:32 +1100 | [diff] [blame] | 156 | * This either works (return 0) or gets an EFSCORRUPTED error. |
| 157 | */ |
| 158 | STATIC int |
| 159 | xfs_bmbt_update( |
| 160 | struct xfs_btree_cur *cur, |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 161 | struct xfs_bmbt_irec *irec) |
Christoph Hellwig | 278d0ca | 2008-10-30 16:56:32 +1100 | [diff] [blame] | 162 | { |
| 163 | union xfs_btree_rec rec; |
| 164 | |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 165 | xfs_bmbt_disk_set_all(&rec.bmbt, irec); |
Christoph Hellwig | 278d0ca | 2008-10-30 16:56:32 +1100 | [diff] [blame] | 166 | return xfs_btree_update(cur, &rec); |
| 167 | } |
Christoph Hellwig | fe033cc | 2008-10-30 16:56:09 +1100 | [diff] [blame] | 168 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | /* |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 170 | * Compute the worst-case number of indirect blocks that will be used |
| 171 | * for ip's delayed extent of length "len". |
| 172 | */ |
| 173 | STATIC xfs_filblks_t |
| 174 | xfs_bmap_worst_indlen( |
| 175 | xfs_inode_t *ip, /* incore inode pointer */ |
| 176 | xfs_filblks_t len) /* delayed extent length */ |
| 177 | { |
| 178 | int level; /* btree level number */ |
| 179 | int maxrecs; /* maximum record count at this level */ |
| 180 | xfs_mount_t *mp; /* mount structure */ |
| 181 | xfs_filblks_t rval; /* return value */ |
| 182 | |
| 183 | mp = ip->i_mount; |
| 184 | maxrecs = mp->m_bmap_dmxr[0]; |
| 185 | for (level = 0, rval = 0; |
| 186 | level < XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK); |
| 187 | level++) { |
| 188 | len += maxrecs - 1; |
| 189 | do_div(len, maxrecs); |
| 190 | rval += len; |
Darrick J. Wong | 5e5c943 | 2017-09-18 09:41:17 -0700 | [diff] [blame] | 191 | if (len == 1) |
| 192 | return rval + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) - |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 193 | level - 1; |
| 194 | if (level == 0) |
| 195 | maxrecs = mp->m_bmap_dmxr[1]; |
| 196 | } |
| 197 | return rval; |
| 198 | } |
| 199 | |
| 200 | /* |
| 201 | * Calculate the default attribute fork offset for newly created inodes. |
| 202 | */ |
| 203 | uint |
| 204 | xfs_default_attroffset( |
| 205 | struct xfs_inode *ip) |
| 206 | { |
Dave Chinner | 683ec9b | 2021-04-06 07:02:04 -0700 | [diff] [blame] | 207 | if (ip->i_df.if_format == XFS_DINODE_FMT_DEV) |
| 208 | return roundup(sizeof(xfs_dev_t), 8); |
Dave Chinner | b294104 | 2021-04-06 07:03:24 -0700 | [diff] [blame] | 209 | return M_IGEO(ip->i_mount)->attr_fork_offset; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 210 | } |
| 211 | |
| 212 | /* |
Christoph Hellwig | 7821ea3 | 2021-03-29 11:11:44 -0700 | [diff] [blame] | 213 | * Helper routine to reset inode i_forkoff field when switching attribute fork |
| 214 | * from local to extent format - we reset it where possible to make space |
| 215 | * available for inline data fork extents. |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 216 | */ |
| 217 | STATIC void |
| 218 | xfs_bmap_forkoff_reset( |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 219 | xfs_inode_t *ip, |
| 220 | int whichfork) |
| 221 | { |
| 222 | if (whichfork == XFS_ATTR_FORK && |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 223 | ip->i_df.if_format != XFS_DINODE_FMT_DEV && |
| 224 | ip->i_df.if_format != XFS_DINODE_FMT_BTREE) { |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 225 | uint dfl_forkoff = xfs_default_attroffset(ip) >> 3; |
| 226 | |
Christoph Hellwig | 7821ea3 | 2021-03-29 11:11:44 -0700 | [diff] [blame] | 227 | if (dfl_forkoff > ip->i_forkoff) |
| 228 | ip->i_forkoff = dfl_forkoff; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 229 | } |
| 230 | } |
| 231 | |
Christoph Hellwig | 6a701eb | 2024-02-22 12:41:01 -0800 | [diff] [blame] | 232 | static int |
| 233 | xfs_bmap_read_buf( |
| 234 | struct xfs_mount *mp, /* file system mount point */ |
| 235 | struct xfs_trans *tp, /* transaction pointer */ |
| 236 | xfs_fsblock_t fsbno, /* file system block number */ |
| 237 | struct xfs_buf **bpp) /* buffer for fsbno */ |
| 238 | { |
| 239 | struct xfs_buf *bp; /* return value */ |
| 240 | int error; |
| 241 | |
| 242 | if (!xfs_verify_fsbno(mp, fsbno)) |
| 243 | return -EFSCORRUPTED; |
| 244 | error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, |
| 245 | XFS_FSB_TO_DADDR(mp, fsbno), mp->m_bsize, 0, &bp, |
| 246 | &xfs_bmbt_buf_ops); |
| 247 | if (!error) { |
| 248 | xfs_buf_set_ref(bp, XFS_BMAP_BTREE_REF); |
| 249 | *bpp = bp; |
| 250 | } |
| 251 | return error; |
| 252 | } |
| 253 | |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 254 | #ifdef DEBUG |
| 255 | STATIC struct xfs_buf * |
| 256 | xfs_bmap_get_bp( |
| 257 | struct xfs_btree_cur *cur, |
| 258 | xfs_fsblock_t bno) |
| 259 | { |
Dave Chinner | e6631f8 | 2018-05-09 07:49:37 -0700 | [diff] [blame] | 260 | struct xfs_log_item *lip; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 261 | int i; |
| 262 | |
| 263 | if (!cur) |
| 264 | return NULL; |
| 265 | |
Darrick J. Wong | c0643f6 | 2021-09-16 12:26:56 -0700 | [diff] [blame] | 266 | for (i = 0; i < cur->bc_maxlevels; i++) { |
Darrick J. Wong | 6ca444cf | 2021-09-16 12:24:04 -0700 | [diff] [blame] | 267 | if (!cur->bc_levels[i].bp) |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 268 | break; |
Darrick J. Wong | 6ca444cf | 2021-09-16 12:24:04 -0700 | [diff] [blame] | 269 | if (xfs_buf_daddr(cur->bc_levels[i].bp) == bno) |
| 270 | return cur->bc_levels[i].bp; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 271 | } |
| 272 | |
| 273 | /* Chase down all the log items to see if the bp is there */ |
Dave Chinner | e6631f8 | 2018-05-09 07:49:37 -0700 | [diff] [blame] | 274 | list_for_each_entry(lip, &cur->bc_tp->t_items, li_trans) { |
| 275 | struct xfs_buf_log_item *bip = (struct xfs_buf_log_item *)lip; |
| 276 | |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 277 | if (bip->bli_item.li_type == XFS_LI_BUF && |
Dave Chinner | 04fcad8 | 2021-08-18 18:46:57 -0700 | [diff] [blame] | 278 | xfs_buf_daddr(bip->bli_buf) == bno) |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 279 | return bip->bli_buf; |
| 280 | } |
| 281 | |
| 282 | return NULL; |
| 283 | } |
| 284 | |
| 285 | STATIC void |
| 286 | xfs_check_block( |
| 287 | struct xfs_btree_block *block, |
| 288 | xfs_mount_t *mp, |
| 289 | int root, |
| 290 | short sz) |
| 291 | { |
| 292 | int i, j, dmxr; |
| 293 | __be64 *pp, *thispa; /* pointer to block address */ |
| 294 | xfs_bmbt_key_t *prevp, *keyp; |
| 295 | |
| 296 | ASSERT(be16_to_cpu(block->bb_level) > 0); |
| 297 | |
| 298 | prevp = NULL; |
| 299 | for( i = 1; i <= xfs_btree_get_numrecs(block); i++) { |
| 300 | dmxr = mp->m_bmap_dmxr[0]; |
Darrick J. Wong | 79124b3 | 2024-08-30 15:37:20 -0700 | [diff] [blame] | 301 | keyp = xfs_bmbt_key_addr(mp, block, i); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 302 | |
| 303 | if (prevp) { |
| 304 | ASSERT(be64_to_cpu(prevp->br_startoff) < |
| 305 | be64_to_cpu(keyp->br_startoff)); |
| 306 | } |
| 307 | prevp = keyp; |
| 308 | |
| 309 | /* |
| 310 | * Compare the block numbers to see if there are dups. |
| 311 | */ |
| 312 | if (root) |
Darrick J. Wong | 79124b3 | 2024-08-30 15:37:20 -0700 | [diff] [blame] | 313 | pp = xfs_bmap_broot_ptr_addr(mp, block, i, sz); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 314 | else |
Darrick J. Wong | 79124b3 | 2024-08-30 15:37:20 -0700 | [diff] [blame] | 315 | pp = xfs_bmbt_ptr_addr(mp, block, i, dmxr); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 316 | |
| 317 | for (j = i+1; j <= be16_to_cpu(block->bb_numrecs); j++) { |
| 318 | if (root) |
Darrick J. Wong | 79124b3 | 2024-08-30 15:37:20 -0700 | [diff] [blame] | 319 | thispa = xfs_bmap_broot_ptr_addr(mp, block, j, sz); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 320 | else |
Darrick J. Wong | 79124b3 | 2024-08-30 15:37:20 -0700 | [diff] [blame] | 321 | thispa = xfs_bmbt_ptr_addr(mp, block, j, dmxr); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 322 | if (*thispa == *pp) { |
Zeng Heng | 78b0f58 | 2022-09-19 06:47:14 +1000 | [diff] [blame] | 323 | xfs_warn(mp, "%s: thispa(%d) == pp(%d) %lld", |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 324 | __func__, j, i, |
| 325 | (unsigned long long)be64_to_cpu(*thispa)); |
Darrick J. Wong | cec5725 | 2018-05-04 15:31:21 -0700 | [diff] [blame] | 326 | xfs_err(mp, "%s: ptrs are equal in node\n", |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 327 | __func__); |
Darrick J. Wong | cec5725 | 2018-05-04 15:31:21 -0700 | [diff] [blame] | 328 | xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 329 | } |
| 330 | } |
| 331 | } |
| 332 | } |
| 333 | |
| 334 | /* |
| 335 | * Check that the extents for the inode ip are in the right order in all |
Dave Chinner | e354381 | 2016-01-08 11:28:49 +1100 | [diff] [blame] | 336 | * btree leaves. THis becomes prohibitively expensive for large extent count |
| 337 | * files, so don't bother with inodes that have more than 10,000 extents in |
| 338 | * them. The btree record ordering checks will still be done, so for such large |
| 339 | * bmapbt constructs that is going to catch most corruptions. |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 340 | */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 341 | STATIC void |
| 342 | xfs_bmap_check_leaf_extents( |
Darrick J. Wong | ae127f0 | 2021-09-16 12:18:47 -0700 | [diff] [blame] | 343 | struct xfs_btree_cur *cur, /* btree cursor or null */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 344 | xfs_inode_t *ip, /* incore inode pointer */ |
| 345 | int whichfork) /* data or attr fork */ |
| 346 | { |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 347 | struct xfs_mount *mp = ip->i_mount; |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 348 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 349 | struct xfs_btree_block *block; /* current btree block */ |
| 350 | xfs_fsblock_t bno; /* block # of "block" */ |
Dave Chinner | e822261 | 2020-12-16 16:07:34 -0800 | [diff] [blame] | 351 | struct xfs_buf *bp; /* buffer for "block" */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 352 | int error; /* error return value */ |
| 353 | xfs_extnum_t i=0, j; /* index into the extents list */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 354 | int level; /* btree level, for checking */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 355 | __be64 *pp; /* pointer to block address */ |
| 356 | xfs_bmbt_rec_t *ep; /* pointer to current extent */ |
| 357 | xfs_bmbt_rec_t last = {0, 0}; /* last extent in prev block */ |
| 358 | xfs_bmbt_rec_t *nextp; /* pointer to next extent */ |
| 359 | int bp_release = 0; |
| 360 | |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 361 | if (ifp->if_format != XFS_DINODE_FMT_BTREE) |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 362 | return; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 363 | |
Dave Chinner | e354381 | 2016-01-08 11:28:49 +1100 | [diff] [blame] | 364 | /* skip large extent count inodes */ |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 365 | if (ip->i_df.if_nextents > 10000) |
Dave Chinner | e354381 | 2016-01-08 11:28:49 +1100 | [diff] [blame] | 366 | return; |
| 367 | |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 368 | bno = NULLFSBLOCK; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 369 | block = ifp->if_broot; |
| 370 | /* |
| 371 | * Root level must use BMAP_BROOT_PTR_ADDR macro to get ptr out. |
| 372 | */ |
| 373 | level = be16_to_cpu(block->bb_level); |
| 374 | ASSERT(level > 0); |
| 375 | xfs_check_block(block, mp, 1, ifp->if_broot_bytes); |
Darrick J. Wong | 79124b3 | 2024-08-30 15:37:20 -0700 | [diff] [blame] | 376 | pp = xfs_bmap_broot_ptr_addr(mp, block, 1, ifp->if_broot_bytes); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 377 | bno = be64_to_cpu(*pp); |
| 378 | |
Christoph Hellwig | d5cf09b | 2014-07-30 09:12:05 +1000 | [diff] [blame] | 379 | ASSERT(bno != NULLFSBLOCK); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 380 | ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount); |
| 381 | ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks); |
| 382 | |
| 383 | /* |
| 384 | * Go down the tree until leaf level is reached, following the first |
| 385 | * pointer (leftmost) at each level. |
| 386 | */ |
| 387 | while (level-- > 0) { |
| 388 | /* See if buf is in cur first */ |
| 389 | bp_release = 0; |
| 390 | bp = xfs_bmap_get_bp(cur, XFS_FSB_TO_DADDR(mp, bno)); |
| 391 | if (!bp) { |
| 392 | bp_release = 1; |
Christoph Hellwig | 6a701eb | 2024-02-22 12:41:01 -0800 | [diff] [blame] | 393 | error = xfs_bmap_read_buf(mp, NULL, bno, &bp); |
Darrick J. Wong | a78d10f | 2024-02-22 12:32:09 -0800 | [diff] [blame] | 394 | if (xfs_metadata_is_sick(error)) |
| 395 | xfs_btree_mark_sick(cur); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 396 | if (error) |
| 397 | goto error_norelse; |
| 398 | } |
| 399 | block = XFS_BUF_TO_BLOCK(bp); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 400 | if (level == 0) |
| 401 | break; |
| 402 | |
| 403 | /* |
| 404 | * Check this block for basic sanity (increasing keys and |
| 405 | * no duplicate blocks). |
| 406 | */ |
| 407 | |
| 408 | xfs_check_block(block, mp, 0, 0); |
Darrick J. Wong | 79124b3 | 2024-08-30 15:37:20 -0700 | [diff] [blame] | 409 | pp = xfs_bmbt_ptr_addr(mp, block, 1, mp->m_bmap_dmxr[1]); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 410 | bno = be64_to_cpu(*pp); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 411 | if (XFS_IS_CORRUPT(mp, !xfs_verify_fsbno(mp, bno))) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 412 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 413 | error = -EFSCORRUPTED; |
| 414 | goto error0; |
| 415 | } |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 416 | if (bp_release) { |
| 417 | bp_release = 0; |
| 418 | xfs_trans_brelse(NULL, bp); |
| 419 | } |
| 420 | } |
| 421 | |
| 422 | /* |
| 423 | * Here with bp and block set to the leftmost leaf node in the tree. |
| 424 | */ |
| 425 | i = 0; |
| 426 | |
| 427 | /* |
| 428 | * Loop over all leaf nodes checking that all extents are in the right order. |
| 429 | */ |
| 430 | for (;;) { |
| 431 | xfs_fsblock_t nextbno; |
| 432 | xfs_extnum_t num_recs; |
| 433 | |
| 434 | |
| 435 | num_recs = xfs_btree_get_numrecs(block); |
| 436 | |
| 437 | /* |
| 438 | * Read-ahead the next leaf block, if any. |
| 439 | */ |
| 440 | |
| 441 | nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib); |
| 442 | |
| 443 | /* |
| 444 | * Check all the extents to make sure they are OK. |
| 445 | * If we had a previous block, the last entry should |
| 446 | * conform with the first entry in this one. |
| 447 | */ |
| 448 | |
Darrick J. Wong | 79124b3 | 2024-08-30 15:37:20 -0700 | [diff] [blame] | 449 | ep = xfs_bmbt_rec_addr(mp, block, 1); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 450 | if (i) { |
| 451 | ASSERT(xfs_bmbt_disk_get_startoff(&last) + |
| 452 | xfs_bmbt_disk_get_blockcount(&last) <= |
| 453 | xfs_bmbt_disk_get_startoff(ep)); |
| 454 | } |
| 455 | for (j = 1; j < num_recs; j++) { |
Darrick J. Wong | 79124b3 | 2024-08-30 15:37:20 -0700 | [diff] [blame] | 456 | nextp = xfs_bmbt_rec_addr(mp, block, j + 1); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 457 | ASSERT(xfs_bmbt_disk_get_startoff(ep) + |
| 458 | xfs_bmbt_disk_get_blockcount(ep) <= |
| 459 | xfs_bmbt_disk_get_startoff(nextp)); |
| 460 | ep = nextp; |
| 461 | } |
| 462 | |
| 463 | last = *ep; |
| 464 | i += num_recs; |
| 465 | if (bp_release) { |
| 466 | bp_release = 0; |
| 467 | xfs_trans_brelse(NULL, bp); |
| 468 | } |
| 469 | bno = nextbno; |
| 470 | /* |
| 471 | * If we've reached the end, stop. |
| 472 | */ |
| 473 | if (bno == NULLFSBLOCK) |
| 474 | break; |
| 475 | |
| 476 | bp_release = 0; |
| 477 | bp = xfs_bmap_get_bp(cur, XFS_FSB_TO_DADDR(mp, bno)); |
| 478 | if (!bp) { |
| 479 | bp_release = 1; |
Christoph Hellwig | 6a701eb | 2024-02-22 12:41:01 -0800 | [diff] [blame] | 480 | error = xfs_bmap_read_buf(mp, NULL, bno, &bp); |
Darrick J. Wong | a78d10f | 2024-02-22 12:32:09 -0800 | [diff] [blame] | 481 | if (xfs_metadata_is_sick(error)) |
| 482 | xfs_btree_mark_sick(cur); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 483 | if (error) |
| 484 | goto error_norelse; |
| 485 | } |
| 486 | block = XFS_BUF_TO_BLOCK(bp); |
| 487 | } |
Luis de Bethencourt | a5fd276 | 2016-03-09 08:17:56 +1100 | [diff] [blame] | 488 | |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 489 | return; |
| 490 | |
| 491 | error0: |
| 492 | xfs_warn(mp, "%s: at error0", __func__); |
| 493 | if (bp_release) |
| 494 | xfs_trans_brelse(NULL, bp); |
| 495 | error_norelse: |
Chandan Babu R | 755c38f | 2021-11-16 07:28:40 +0000 | [diff] [blame] | 496 | xfs_warn(mp, "%s: BAD after btree leaves for %llu extents", |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 497 | __func__, i); |
Darrick J. Wong | cec5725 | 2018-05-04 15:31:21 -0700 | [diff] [blame] | 498 | xfs_err(mp, "%s: CORRUPTED BTREE OR SOMETHING", __func__); |
| 499 | xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 500 | return; |
| 501 | } |
| 502 | |
| 503 | /* |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 504 | * Validate that the bmbt_irecs being returned from bmapi are valid |
Zhi Yong Wu | a97f4df | 2013-08-12 03:14:53 +0000 | [diff] [blame] | 505 | * given the caller's original parameters. Specifically check the |
| 506 | * ranges of the returned irecs to ensure that they only extend beyond |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 507 | * the given parameters if the XFS_BMAPI_ENTIRE flag was set. |
| 508 | */ |
| 509 | STATIC void |
| 510 | xfs_bmap_validate_ret( |
| 511 | xfs_fileoff_t bno, |
| 512 | xfs_filblks_t len, |
Dave Chinner | e7d410a | 2022-04-21 10:46:09 +1000 | [diff] [blame] | 513 | uint32_t flags, |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 514 | xfs_bmbt_irec_t *mval, |
| 515 | int nmap, |
| 516 | int ret_nmap) |
| 517 | { |
| 518 | int i; /* index to map values */ |
| 519 | |
| 520 | ASSERT(ret_nmap <= nmap); |
| 521 | |
| 522 | for (i = 0; i < ret_nmap; i++) { |
| 523 | ASSERT(mval[i].br_blockcount > 0); |
| 524 | if (!(flags & XFS_BMAPI_ENTIRE)) { |
| 525 | ASSERT(mval[i].br_startoff >= bno); |
| 526 | ASSERT(mval[i].br_blockcount <= len); |
| 527 | ASSERT(mval[i].br_startoff + mval[i].br_blockcount <= |
| 528 | bno + len); |
| 529 | } else { |
| 530 | ASSERT(mval[i].br_startoff < bno + len); |
| 531 | ASSERT(mval[i].br_startoff + mval[i].br_blockcount > |
| 532 | bno); |
| 533 | } |
| 534 | ASSERT(i == 0 || |
| 535 | mval[i - 1].br_startoff + mval[i - 1].br_blockcount == |
| 536 | mval[i].br_startoff); |
| 537 | ASSERT(mval[i].br_startblock != DELAYSTARTBLOCK && |
| 538 | mval[i].br_startblock != HOLESTARTBLOCK); |
| 539 | ASSERT(mval[i].br_state == XFS_EXT_NORM || |
| 540 | mval[i].br_state == XFS_EXT_UNWRITTEN); |
| 541 | } |
| 542 | } |
| 543 | |
| 544 | #else |
| 545 | #define xfs_bmap_check_leaf_extents(cur, ip, whichfork) do { } while (0) |
Darrick J. Wong | 7bf7a19 | 2017-08-31 15:11:06 -0700 | [diff] [blame] | 546 | #define xfs_bmap_validate_ret(bno,len,flags,mval,onmap,nmap) do { } while (0) |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 547 | #endif /* DEBUG */ |
| 548 | |
| 549 | /* |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 550 | * Inode fork format manipulation functions |
| 551 | */ |
| 552 | |
| 553 | /* |
Christoph Hellwig | b101e33 | 2019-02-15 08:02:47 -0800 | [diff] [blame] | 554 | * Convert the inode format to extent format if it currently is in btree format, |
| 555 | * but the extent list is small enough that it fits into the extent format. |
| 556 | * |
| 557 | * Since the extents are already in-core, all we have to do is give up the space |
| 558 | * for the btree root and pitch the leaf block. |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 559 | */ |
| 560 | STATIC int /* error */ |
| 561 | xfs_bmap_btree_to_extents( |
Christoph Hellwig | b101e33 | 2019-02-15 08:02:47 -0800 | [diff] [blame] | 562 | struct xfs_trans *tp, /* transaction pointer */ |
| 563 | struct xfs_inode *ip, /* incore inode pointer */ |
| 564 | struct xfs_btree_cur *cur, /* btree cursor */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 565 | int *logflagsp, /* inode logging flags */ |
| 566 | int whichfork) /* data or attr fork */ |
| 567 | { |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 568 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Christoph Hellwig | b101e33 | 2019-02-15 08:02:47 -0800 | [diff] [blame] | 569 | struct xfs_mount *mp = ip->i_mount; |
| 570 | struct xfs_btree_block *rblock = ifp->if_broot; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 571 | struct xfs_btree_block *cblock;/* child btree block */ |
| 572 | xfs_fsblock_t cbno; /* child block number */ |
Dave Chinner | e822261 | 2020-12-16 16:07:34 -0800 | [diff] [blame] | 573 | struct xfs_buf *cbp; /* child block's buffer */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 574 | int error; /* error return value */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 575 | __be64 *pp; /* ptr to block address */ |
Darrick J. Wong | 340785c | 2016-08-03 11:33:42 +1000 | [diff] [blame] | 576 | struct xfs_owner_info oinfo; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 577 | |
Christoph Hellwig | b101e33 | 2019-02-15 08:02:47 -0800 | [diff] [blame] | 578 | /* check if we actually need the extent format first: */ |
| 579 | if (!xfs_bmap_wants_extents(ip, whichfork)) |
| 580 | return 0; |
| 581 | |
| 582 | ASSERT(cur); |
Darrick J. Wong | 60b4984 | 2016-10-03 09:11:34 -0700 | [diff] [blame] | 583 | ASSERT(whichfork != XFS_COW_FORK); |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 584 | ASSERT(ifp->if_format == XFS_DINODE_FMT_BTREE); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 585 | ASSERT(be16_to_cpu(rblock->bb_level) == 1); |
| 586 | ASSERT(be16_to_cpu(rblock->bb_numrecs) == 1); |
Darrick J. Wong | 411a712 | 2024-08-30 15:37:21 -0700 | [diff] [blame] | 587 | ASSERT(xfs_bmbt_maxrecs(mp, ifp->if_broot_bytes, false) == 1); |
Christoph Hellwig | b101e33 | 2019-02-15 08:02:47 -0800 | [diff] [blame] | 588 | |
Darrick J. Wong | 79124b3 | 2024-08-30 15:37:20 -0700 | [diff] [blame] | 589 | pp = xfs_bmap_broot_ptr_addr(mp, rblock, 1, ifp->if_broot_bytes); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 590 | cbno = be64_to_cpu(*pp); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 591 | #ifdef DEBUG |
Christoph Hellwig | fb0793f | 2024-02-22 12:40:53 -0800 | [diff] [blame] | 592 | if (XFS_IS_CORRUPT(cur->bc_mp, !xfs_verify_fsbno(mp, cbno))) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 593 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 594 | return -EFSCORRUPTED; |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 595 | } |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 596 | #endif |
Christoph Hellwig | 6a701eb | 2024-02-22 12:41:01 -0800 | [diff] [blame] | 597 | error = xfs_bmap_read_buf(mp, tp, cbno, &cbp); |
Darrick J. Wong | a78d10f | 2024-02-22 12:32:09 -0800 | [diff] [blame] | 598 | if (xfs_metadata_is_sick(error)) |
| 599 | xfs_btree_mark_sick(cur); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 600 | if (error) |
| 601 | return error; |
| 602 | cblock = XFS_BUF_TO_BLOCK(cbp); |
| 603 | if ((error = xfs_btree_check_block(cur, cblock, 0, cbp))) |
| 604 | return error; |
Dave Chinner | 7dfee17 | 2023-06-05 14:48:15 +1000 | [diff] [blame] | 605 | |
Darrick J. Wong | 340785c | 2016-08-03 11:33:42 +1000 | [diff] [blame] | 606 | xfs_rmap_ino_bmbt_owner(&oinfo, ip->i_ino, whichfork); |
Dave Chinner | b742d7b4 | 2023-06-28 11:04:32 -0700 | [diff] [blame] | 607 | error = xfs_free_extent_later(cur->bc_tp, cbno, 1, &oinfo, |
Darrick J. Wong | 980faec | 2024-07-02 11:22:51 -0700 | [diff] [blame] | 608 | XFS_AG_RESV_NONE, 0); |
Dave Chinner | 7dfee17 | 2023-06-05 14:48:15 +1000 | [diff] [blame] | 609 | if (error) |
| 610 | return error; |
| 611 | |
Christoph Hellwig | 6e73a54 | 2021-03-29 11:11:40 -0700 | [diff] [blame] | 612 | ip->i_nblocks--; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 613 | xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_BCOUNT, -1L); |
| 614 | xfs_trans_binval(tp, cbp); |
Darrick J. Wong | 6ca444cf | 2021-09-16 12:24:04 -0700 | [diff] [blame] | 615 | if (cur->bc_levels[0].bp == cbp) |
| 616 | cur->bc_levels[0].bp = NULL; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 617 | xfs_iroot_realloc(ip, -1, whichfork); |
| 618 | ASSERT(ifp->if_broot == NULL); |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 619 | ifp->if_format = XFS_DINODE_FMT_EXTENTS; |
Christoph Hellwig | b101e33 | 2019-02-15 08:02:47 -0800 | [diff] [blame] | 620 | *logflagsp |= XFS_ILOG_CORE | xfs_ilog_fext(whichfork); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 621 | return 0; |
| 622 | } |
| 623 | |
| 624 | /* |
| 625 | * Convert an extents-format file into a btree-format file. |
| 626 | * The new file will have a root block (in the inode) and a single child block. |
| 627 | */ |
| 628 | STATIC int /* error */ |
| 629 | xfs_bmap_extents_to_btree( |
Brian Foster | 81ba8f3 | 2018-07-11 22:26:16 -0700 | [diff] [blame] | 630 | struct xfs_trans *tp, /* transaction pointer */ |
| 631 | struct xfs_inode *ip, /* incore inode pointer */ |
Brian Foster | 81ba8f3 | 2018-07-11 22:26:16 -0700 | [diff] [blame] | 632 | struct xfs_btree_cur **curp, /* cursor returned to caller */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 633 | int wasdel, /* converting a delayed alloc */ |
| 634 | int *logflagsp, /* inode logging flags */ |
| 635 | int whichfork) /* data or attr fork */ |
| 636 | { |
| 637 | struct xfs_btree_block *ablock; /* allocated (child) bt block */ |
Brian Foster | 81ba8f3 | 2018-07-11 22:26:16 -0700 | [diff] [blame] | 638 | struct xfs_buf *abp; /* buffer for ablock */ |
| 639 | struct xfs_alloc_arg args; /* allocation arguments */ |
| 640 | struct xfs_bmbt_rec *arp; /* child record pointer */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 641 | struct xfs_btree_block *block; /* btree root block */ |
Brian Foster | 81ba8f3 | 2018-07-11 22:26:16 -0700 | [diff] [blame] | 642 | struct xfs_btree_cur *cur; /* bmap btree cursor */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 643 | int error; /* error return value */ |
Brian Foster | 81ba8f3 | 2018-07-11 22:26:16 -0700 | [diff] [blame] | 644 | struct xfs_ifork *ifp; /* inode fork pointer */ |
| 645 | struct xfs_bmbt_key *kp; /* root block key pointer */ |
| 646 | struct xfs_mount *mp; /* mount structure */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 647 | xfs_bmbt_ptr_t *pp; /* root block address pointer */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 648 | struct xfs_iext_cursor icur; |
Christoph Hellwig | 906abed | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 649 | struct xfs_bmbt_irec rec; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 650 | xfs_extnum_t cnt = 0; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 651 | |
Christoph Hellwig | ee1a47a | 2013-04-21 14:53:46 -0500 | [diff] [blame] | 652 | mp = ip->i_mount; |
Darrick J. Wong | 60b4984 | 2016-10-03 09:11:34 -0700 | [diff] [blame] | 653 | ASSERT(whichfork != XFS_COW_FORK); |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 654 | ifp = xfs_ifork_ptr(ip, whichfork); |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 655 | ASSERT(ifp->if_format == XFS_DINODE_FMT_EXTENTS); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 656 | |
| 657 | /* |
Dave Chinner | e55ec4d | 2018-10-01 08:11:07 +1000 | [diff] [blame] | 658 | * Make space in the inode incore. This needs to be undone if we fail |
| 659 | * to expand the root. |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 660 | */ |
| 661 | xfs_iroot_realloc(ip, 1, whichfork); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 662 | |
| 663 | /* |
| 664 | * Fill in the root. |
| 665 | */ |
| 666 | block = ifp->if_broot; |
Darrick J. Wong | c87e3bf | 2024-02-22 12:35:16 -0800 | [diff] [blame] | 667 | xfs_bmbt_init_block(ip, block, NULL, 1, 1); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 668 | /* |
| 669 | * Need a cursor. Can't allocate until bb_level is filled in. |
| 670 | */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 671 | cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); |
Christoph Hellwig | e9e66df | 2024-02-22 12:35:13 -0800 | [diff] [blame] | 672 | if (wasdel) |
| 673 | cur->bc_flags |= XFS_BTREE_BMBT_WASDEL; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 674 | /* |
| 675 | * Convert to a btree with two levels, one record in root. |
| 676 | */ |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 677 | ifp->if_format = XFS_DINODE_FMT_BTREE; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 678 | memset(&args, 0, sizeof(args)); |
| 679 | args.tp = tp; |
| 680 | args.mp = mp; |
Darrick J. Wong | 340785c | 2016-08-03 11:33:42 +1000 | [diff] [blame] | 681 | xfs_rmap_ino_bmbt_owner(&args.oinfo, ip->i_ino, whichfork); |
Dave Chinner | 36b6ad2 | 2023-02-11 04:10:06 +1100 | [diff] [blame] | 682 | |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 683 | args.minlen = args.maxlen = args.prod = 1; |
| 684 | args.wasdel = wasdel; |
| 685 | *logflagsp = 0; |
Dave Chinner | 2a7f6d4 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 686 | error = xfs_alloc_vextent_start_ag(&args, |
| 687 | XFS_INO_TO_FSB(mp, ip->i_ino)); |
Dave Chinner | e55ec4d | 2018-10-01 08:11:07 +1000 | [diff] [blame] | 688 | if (error) |
| 689 | goto out_root_realloc; |
Darrick J. Wong | 90e2056 | 2016-10-03 09:11:45 -0700 | [diff] [blame] | 690 | |
Dave Chinner | 36b6ad2 | 2023-02-11 04:10:06 +1100 | [diff] [blame] | 691 | /* |
| 692 | * Allocation can't fail, the space was reserved. |
| 693 | */ |
Christoph Hellwig | 2fcc319 | 2017-03-08 10:38:53 -0800 | [diff] [blame] | 694 | if (WARN_ON_ONCE(args.fsbno == NULLFSBLOCK)) { |
Shan Hai | 01239d77 | 2018-08-10 17:55:55 -0700 | [diff] [blame] | 695 | error = -ENOSPC; |
Dave Chinner | e55ec4d | 2018-10-01 08:11:07 +1000 | [diff] [blame] | 696 | goto out_root_realloc; |
Christoph Hellwig | 2fcc319 | 2017-03-08 10:38:53 -0800 | [diff] [blame] | 697 | } |
Dave Chinner | e55ec4d | 2018-10-01 08:11:07 +1000 | [diff] [blame] | 698 | |
Christoph Hellwig | 88ee2f4 | 2024-02-22 12:37:03 -0800 | [diff] [blame] | 699 | cur->bc_bmap.allocated++; |
Christoph Hellwig | 6e73a54 | 2021-03-29 11:11:40 -0700 | [diff] [blame] | 700 | ip->i_nblocks++; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 701 | xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_BCOUNT, 1L); |
Darrick J. Wong | ee647f8 | 2020-01-23 17:01:19 -0800 | [diff] [blame] | 702 | error = xfs_trans_get_buf(tp, mp->m_ddev_targp, |
| 703 | XFS_FSB_TO_DADDR(mp, args.fsbno), |
| 704 | mp->m_bsize, 0, &abp); |
| 705 | if (error) |
Dave Chinner | e55ec4d | 2018-10-01 08:11:07 +1000 | [diff] [blame] | 706 | goto out_unreserve_dquot; |
Dave Chinner | e55ec4d | 2018-10-01 08:11:07 +1000 | [diff] [blame] | 707 | |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 708 | /* |
| 709 | * Fill in the child block. |
| 710 | */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 711 | ablock = XFS_BUF_TO_BLOCK(abp); |
Darrick J. Wong | c87e3bf | 2024-02-22 12:35:16 -0800 | [diff] [blame] | 712 | xfs_bmbt_init_block(ip, ablock, abp, 0, 0); |
Christoph Hellwig | ee1a47a | 2013-04-21 14:53:46 -0500 | [diff] [blame] | 713 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 714 | for_each_xfs_iext(ifp, &icur, &rec) { |
Christoph Hellwig | 906abed | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 715 | if (isnullstartblock(rec.br_startblock)) |
| 716 | continue; |
Darrick J. Wong | 79124b3 | 2024-08-30 15:37:20 -0700 | [diff] [blame] | 717 | arp = xfs_bmbt_rec_addr(mp, ablock, 1 + cnt); |
Christoph Hellwig | 906abed | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 718 | xfs_bmbt_disk_set_all(arp, &rec); |
| 719 | cnt++; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 720 | } |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 721 | ASSERT(cnt == ifp->if_nextents); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 722 | xfs_btree_set_numrecs(ablock, cnt); |
| 723 | |
| 724 | /* |
| 725 | * Fill in the root key and pointer. |
| 726 | */ |
Darrick J. Wong | 79124b3 | 2024-08-30 15:37:20 -0700 | [diff] [blame] | 727 | kp = xfs_bmbt_key_addr(mp, block, 1); |
| 728 | arp = xfs_bmbt_rec_addr(mp, ablock, 1); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 729 | kp->br_startoff = cpu_to_be64(xfs_bmbt_disk_get_startoff(arp)); |
Darrick J. Wong | 79124b3 | 2024-08-30 15:37:20 -0700 | [diff] [blame] | 730 | pp = xfs_bmbt_ptr_addr(mp, block, 1, xfs_bmbt_get_maxrecs(cur, |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 731 | be16_to_cpu(block->bb_level))); |
| 732 | *pp = cpu_to_be64(args.fsbno); |
| 733 | |
| 734 | /* |
| 735 | * Do all this logging at the end so that |
| 736 | * the root is at the right level. |
| 737 | */ |
| 738 | xfs_btree_log_block(cur, abp, XFS_BB_ALL_BITS); |
| 739 | xfs_btree_log_recs(cur, abp, 1, be16_to_cpu(ablock->bb_numrecs)); |
| 740 | ASSERT(*curp == NULL); |
| 741 | *curp = cur; |
| 742 | *logflagsp = XFS_ILOG_CORE | xfs_ilog_fbroot(whichfork); |
| 743 | return 0; |
Shan Hai | 01239d77 | 2018-08-10 17:55:55 -0700 | [diff] [blame] | 744 | |
Dave Chinner | e55ec4d | 2018-10-01 08:11:07 +1000 | [diff] [blame] | 745 | out_unreserve_dquot: |
Shan Hai | 01239d77 | 2018-08-10 17:55:55 -0700 | [diff] [blame] | 746 | xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_BCOUNT, -1L); |
Dave Chinner | e55ec4d | 2018-10-01 08:11:07 +1000 | [diff] [blame] | 747 | out_root_realloc: |
Shan Hai | 01239d77 | 2018-08-10 17:55:55 -0700 | [diff] [blame] | 748 | xfs_iroot_realloc(ip, -1, whichfork); |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 749 | ifp->if_format = XFS_DINODE_FMT_EXTENTS; |
Dave Chinner | e55ec4d | 2018-10-01 08:11:07 +1000 | [diff] [blame] | 750 | ASSERT(ifp->if_broot == NULL); |
Shan Hai | 01239d77 | 2018-08-10 17:55:55 -0700 | [diff] [blame] | 751 | xfs_btree_del_cursor(cur, XFS_BTREE_ERROR); |
| 752 | |
| 753 | return error; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 754 | } |
| 755 | |
| 756 | /* |
| 757 | * Convert a local file to an extents file. |
| 758 | * This code is out of bounds for data forks of regular files, |
| 759 | * since the file data needs to get logged so things will stay consistent. |
| 760 | * (The bmap-level manipulations are ok, though). |
| 761 | */ |
Dave Chinner | f3508bc | 2013-07-10 07:04:00 +1000 | [diff] [blame] | 762 | void |
| 763 | xfs_bmap_local_to_extents_empty( |
Brian Foster | aeea4b7 | 2019-10-07 12:54:16 -0700 | [diff] [blame] | 764 | struct xfs_trans *tp, |
Dave Chinner | f3508bc | 2013-07-10 07:04:00 +1000 | [diff] [blame] | 765 | struct xfs_inode *ip, |
| 766 | int whichfork) |
| 767 | { |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 768 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Dave Chinner | f3508bc | 2013-07-10 07:04:00 +1000 | [diff] [blame] | 769 | |
Darrick J. Wong | 60b4984 | 2016-10-03 09:11:34 -0700 | [diff] [blame] | 770 | ASSERT(whichfork != XFS_COW_FORK); |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 771 | ASSERT(ifp->if_format == XFS_DINODE_FMT_LOCAL); |
Dave Chinner | f3508bc | 2013-07-10 07:04:00 +1000 | [diff] [blame] | 772 | ASSERT(ifp->if_bytes == 0); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 773 | ASSERT(ifp->if_nextents == 0); |
Dave Chinner | f3508bc | 2013-07-10 07:04:00 +1000 | [diff] [blame] | 774 | |
Eric Sandeen | 6a9edd3 | 2014-04-14 18:59:26 +1000 | [diff] [blame] | 775 | xfs_bmap_forkoff_reset(ip, whichfork); |
Christoph Hellwig | 6e145f9 | 2023-12-20 07:34:55 +0100 | [diff] [blame] | 776 | ifp->if_data = NULL; |
Christoph Hellwig | 6bdcf26 | 2017-11-03 10:34:46 -0700 | [diff] [blame] | 777 | ifp->if_height = 0; |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 778 | ifp->if_format = XFS_DINODE_FMT_EXTENTS; |
Brian Foster | aeea4b7 | 2019-10-07 12:54:16 -0700 | [diff] [blame] | 779 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
Dave Chinner | f3508bc | 2013-07-10 07:04:00 +1000 | [diff] [blame] | 780 | } |
| 781 | |
| 782 | |
Darrick J. Wong | ef744be | 2024-04-15 14:54:58 -0700 | [diff] [blame] | 783 | int /* error */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 784 | xfs_bmap_local_to_extents( |
| 785 | xfs_trans_t *tp, /* transaction pointer */ |
| 786 | xfs_inode_t *ip, /* incore inode pointer */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 787 | xfs_extlen_t total, /* total blocks needed by transaction */ |
| 788 | int *logflagsp, /* inode logging flags */ |
| 789 | int whichfork, |
Christoph Hellwig | ee1a47a | 2013-04-21 14:53:46 -0500 | [diff] [blame] | 790 | void (*init_fn)(struct xfs_trans *tp, |
| 791 | struct xfs_buf *bp, |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 792 | struct xfs_inode *ip, |
Darrick J. Wong | ef744be | 2024-04-15 14:54:58 -0700 | [diff] [blame] | 793 | struct xfs_ifork *ifp, void *priv), |
| 794 | void *priv) |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 795 | { |
Dave Chinner | f3508bc | 2013-07-10 07:04:00 +1000 | [diff] [blame] | 796 | int error = 0; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 797 | int flags; /* logging flags returned */ |
Christoph Hellwig | 3ba738d | 2018-07-17 16:51:50 -0700 | [diff] [blame] | 798 | struct xfs_ifork *ifp; /* inode fork pointer */ |
Dave Chinner | f3508bc | 2013-07-10 07:04:00 +1000 | [diff] [blame] | 799 | xfs_alloc_arg_t args; /* allocation arguments */ |
Dave Chinner | e822261 | 2020-12-16 16:07:34 -0800 | [diff] [blame] | 800 | struct xfs_buf *bp; /* buffer for extent block */ |
Christoph Hellwig | 50bb44c | 2017-08-29 15:44:11 -0700 | [diff] [blame] | 801 | struct xfs_bmbt_irec rec; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 802 | struct xfs_iext_cursor icur; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 803 | |
| 804 | /* |
| 805 | * We don't want to deal with the case of keeping inode data inline yet. |
| 806 | * So sending the data fork of a regular inode is invalid. |
| 807 | */ |
Dave Chinner | c19b3b05 | 2016-02-09 16:54:58 +1100 | [diff] [blame] | 808 | ASSERT(!(S_ISREG(VFS_I(ip)->i_mode) && whichfork == XFS_DATA_FORK)); |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 809 | ifp = xfs_ifork_ptr(ip, whichfork); |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 810 | ASSERT(ifp->if_format == XFS_DINODE_FMT_LOCAL); |
Dave Chinner | f3508bc | 2013-07-10 07:04:00 +1000 | [diff] [blame] | 811 | |
| 812 | if (!ifp->if_bytes) { |
Brian Foster | aeea4b7 | 2019-10-07 12:54:16 -0700 | [diff] [blame] | 813 | xfs_bmap_local_to_extents_empty(tp, ip, whichfork); |
Dave Chinner | f3508bc | 2013-07-10 07:04:00 +1000 | [diff] [blame] | 814 | flags = XFS_ILOG_CORE; |
| 815 | goto done; |
| 816 | } |
| 817 | |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 818 | flags = 0; |
| 819 | error = 0; |
Dave Chinner | f3508bc | 2013-07-10 07:04:00 +1000 | [diff] [blame] | 820 | memset(&args, 0, sizeof(args)); |
| 821 | args.tp = tp; |
| 822 | args.mp = ip->i_mount; |
Dave Chinner | 74c36a8 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 823 | args.total = total; |
| 824 | args.minlen = args.maxlen = args.prod = 1; |
Darrick J. Wong | 340785c | 2016-08-03 11:33:42 +1000 | [diff] [blame] | 825 | xfs_rmap_ino_owner(&args.oinfo, ip->i_ino, whichfork, 0); |
Dave Chinner | 2a7f6d4 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 826 | |
Dave Chinner | f3508bc | 2013-07-10 07:04:00 +1000 | [diff] [blame] | 827 | /* |
| 828 | * Allocate a block. We know we need only one, since the |
| 829 | * file currently fits in an inode. |
| 830 | */ |
Dave Chinner | f3508bc | 2013-07-10 07:04:00 +1000 | [diff] [blame] | 831 | args.total = total; |
| 832 | args.minlen = args.maxlen = args.prod = 1; |
Dave Chinner | 2a7f6d4 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 833 | error = xfs_alloc_vextent_start_ag(&args, |
| 834 | XFS_INO_TO_FSB(args.mp, ip->i_ino)); |
Dave Chinner | f3508bc | 2013-07-10 07:04:00 +1000 | [diff] [blame] | 835 | if (error) |
| 836 | goto done; |
| 837 | |
| 838 | /* Can't fail, the space was reserved. */ |
| 839 | ASSERT(args.fsbno != NULLFSBLOCK); |
| 840 | ASSERT(args.len == 1); |
Darrick J. Wong | ee647f8 | 2020-01-23 17:01:19 -0800 | [diff] [blame] | 841 | error = xfs_trans_get_buf(tp, args.mp->m_ddev_targp, |
| 842 | XFS_FSB_TO_DADDR(args.mp, args.fsbno), |
| 843 | args.mp->m_bsize, 0, &bp); |
| 844 | if (error) |
| 845 | goto done; |
Dave Chinner | f3508bc | 2013-07-10 07:04:00 +1000 | [diff] [blame] | 846 | |
Dave Chinner | fe22d55 | 2015-01-22 09:30:06 +1100 | [diff] [blame] | 847 | /* |
Brian Foster | b7cdc66 | 2015-10-12 15:40:24 +1100 | [diff] [blame] | 848 | * Initialize the block, copy the data and log the remote buffer. |
Dave Chinner | fe22d55 | 2015-01-22 09:30:06 +1100 | [diff] [blame] | 849 | * |
Brian Foster | b7cdc66 | 2015-10-12 15:40:24 +1100 | [diff] [blame] | 850 | * The callout is responsible for logging because the remote format |
| 851 | * might differ from the local format and thus we don't know how much to |
| 852 | * log here. Note that init_fn must also set the buffer log item type |
| 853 | * correctly. |
Dave Chinner | fe22d55 | 2015-01-22 09:30:06 +1100 | [diff] [blame] | 854 | */ |
Darrick J. Wong | ef744be | 2024-04-15 14:54:58 -0700 | [diff] [blame] | 855 | init_fn(tp, bp, ip, ifp, priv); |
Dave Chinner | f3508bc | 2013-07-10 07:04:00 +1000 | [diff] [blame] | 856 | |
Brian Foster | b7cdc66 | 2015-10-12 15:40:24 +1100 | [diff] [blame] | 857 | /* account for the change in fork size */ |
Dave Chinner | f3508bc | 2013-07-10 07:04:00 +1000 | [diff] [blame] | 858 | xfs_idata_realloc(ip, -ifp->if_bytes, whichfork); |
Brian Foster | aeea4b7 | 2019-10-07 12:54:16 -0700 | [diff] [blame] | 859 | xfs_bmap_local_to_extents_empty(tp, ip, whichfork); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 860 | flags |= XFS_ILOG_CORE; |
Dave Chinner | f3508bc | 2013-07-10 07:04:00 +1000 | [diff] [blame] | 861 | |
Christoph Hellwig | 6e145f9 | 2023-12-20 07:34:55 +0100 | [diff] [blame] | 862 | ifp->if_data = NULL; |
Christoph Hellwig | 6bdcf26 | 2017-11-03 10:34:46 -0700 | [diff] [blame] | 863 | ifp->if_height = 0; |
| 864 | |
Christoph Hellwig | 50bb44c | 2017-08-29 15:44:11 -0700 | [diff] [blame] | 865 | rec.br_startoff = 0; |
| 866 | rec.br_startblock = args.fsbno; |
| 867 | rec.br_blockcount = 1; |
| 868 | rec.br_state = XFS_EXT_NORM; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 869 | xfs_iext_first(ifp, &icur); |
Christoph Hellwig | 0254c2f | 2017-11-03 10:34:46 -0700 | [diff] [blame] | 870 | xfs_iext_insert(ip, &icur, &rec, 0); |
Christoph Hellwig | 50bb44c | 2017-08-29 15:44:11 -0700 | [diff] [blame] | 871 | |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 872 | ifp->if_nextents = 1; |
Christoph Hellwig | 6e73a54 | 2021-03-29 11:11:40 -0700 | [diff] [blame] | 873 | ip->i_nblocks = 1; |
Dave Chinner | 36b6ad2 | 2023-02-11 04:10:06 +1100 | [diff] [blame] | 874 | xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_BCOUNT, 1L); |
Dave Chinner | f3508bc | 2013-07-10 07:04:00 +1000 | [diff] [blame] | 875 | flags |= xfs_ilog_fext(whichfork); |
| 876 | |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 877 | done: |
| 878 | *logflagsp = flags; |
| 879 | return error; |
| 880 | } |
| 881 | |
| 882 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | * Called from xfs_bmap_add_attrfork to handle btree format files. |
| 884 | */ |
| 885 | STATIC int /* error */ |
| 886 | xfs_bmap_add_attrfork_btree( |
| 887 | xfs_trans_t *tp, /* transaction pointer */ |
| 888 | xfs_inode_t *ip, /* incore inode pointer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | int *flags) /* inode logging flags */ |
| 890 | { |
Chandan Babu R | b6785e2 | 2021-04-02 15:07:33 -0700 | [diff] [blame] | 891 | struct xfs_btree_block *block = ip->i_df.if_broot; |
Darrick J. Wong | ae127f0 | 2021-09-16 12:18:47 -0700 | [diff] [blame] | 892 | struct xfs_btree_cur *cur; /* btree cursor */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | int error; /* error return value */ |
| 894 | xfs_mount_t *mp; /* file system mount struct */ |
| 895 | int stat; /* newroot status */ |
| 896 | |
| 897 | mp = ip->i_mount; |
Chandan Babu R | b6785e2 | 2021-04-02 15:07:33 -0700 | [diff] [blame] | 898 | |
Darrick J. Wong | 79124b3 | 2024-08-30 15:37:20 -0700 | [diff] [blame] | 899 | if (xfs_bmap_bmdr_space(block) <= xfs_inode_data_fork_size(ip)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 900 | *flags |= XFS_ILOG_DBROOT; |
| 901 | else { |
Christoph Hellwig | 561f7d1 | 2008-10-30 16:53:59 +1100 | [diff] [blame] | 902 | cur = xfs_bmbt_init_cursor(mp, tp, ip, XFS_DATA_FORK); |
Christoph Hellwig | b5cfbc2 | 2017-10-17 14:16:27 -0700 | [diff] [blame] | 903 | error = xfs_bmbt_lookup_first(cur, &stat); |
| 904 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | goto error0; |
Lachlan McIlroy | 6bd8fc8 | 2008-06-23 13:25:46 +1000 | [diff] [blame] | 906 | /* must be at least one entry */ |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 907 | if (XFS_IS_CORRUPT(mp, stat != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 908 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 909 | error = -EFSCORRUPTED; |
| 910 | goto error0; |
| 911 | } |
Christoph Hellwig | ea77b0a | 2008-10-30 16:57:28 +1100 | [diff] [blame] | 912 | if ((error = xfs_btree_new_iroot(cur, flags, &stat))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | goto error0; |
| 914 | if (stat == 0) { |
| 915 | xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 916 | return -ENOSPC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | } |
Christoph Hellwig | 88ee2f4 | 2024-02-22 12:37:03 -0800 | [diff] [blame] | 918 | cur->bc_bmap.allocated = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR); |
| 920 | } |
| 921 | return 0; |
| 922 | error0: |
| 923 | xfs_btree_del_cursor(cur, XFS_BTREE_ERROR); |
| 924 | return error; |
| 925 | } |
| 926 | |
| 927 | /* |
| 928 | * Called from xfs_bmap_add_attrfork to handle extents format files. |
| 929 | */ |
| 930 | STATIC int /* error */ |
| 931 | xfs_bmap_add_attrfork_extents( |
Brian Foster | 81ba8f3 | 2018-07-11 22:26:16 -0700 | [diff] [blame] | 932 | struct xfs_trans *tp, /* transaction pointer */ |
| 933 | struct xfs_inode *ip, /* incore inode pointer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 934 | int *flags) /* inode logging flags */ |
| 935 | { |
Darrick J. Wong | ae127f0 | 2021-09-16 12:18:47 -0700 | [diff] [blame] | 936 | struct xfs_btree_cur *cur; /* bmap btree cursor */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | int error; /* error return value */ |
| 938 | |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 939 | if (ip->i_df.if_nextents * sizeof(struct xfs_bmbt_rec) <= |
Darrick J. Wong | c01147d | 2022-07-09 10:56:07 -0700 | [diff] [blame] | 940 | xfs_inode_data_fork_size(ip)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | return 0; |
| 942 | cur = NULL; |
Brian Foster | 280253d | 2018-07-11 22:26:29 -0700 | [diff] [blame] | 943 | error = xfs_bmap_extents_to_btree(tp, ip, &cur, 0, flags, |
| 944 | XFS_DATA_FORK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | if (cur) { |
Christoph Hellwig | 88ee2f4 | 2024-02-22 12:37:03 -0800 | [diff] [blame] | 946 | cur->bc_bmap.allocated = 0; |
Darrick J. Wong | 0b04b6b8 | 2018-07-19 12:26:31 -0700 | [diff] [blame] | 947 | xfs_btree_del_cursor(cur, error); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 948 | } |
| 949 | return error; |
| 950 | } |
| 951 | |
| 952 | /* |
Dave Chinner | 1e82379 | 2013-02-11 15:58:13 +1100 | [diff] [blame] | 953 | * Called from xfs_bmap_add_attrfork to handle local format files. Each |
| 954 | * different data fork content type needs a different callout to do the |
| 955 | * conversion. Some are basic and only require special block initialisation |
| 956 | * callouts for the data formating, others (directories) are so specialised they |
| 957 | * handle everything themselves. |
| 958 | * |
| 959 | * XXX (dgc): investigate whether directory conversion can use the generic |
| 960 | * formatting callout. It should be possible - it's just a very complex |
Christoph Hellwig | ee1a47a | 2013-04-21 14:53:46 -0500 | [diff] [blame] | 961 | * formatter. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 962 | */ |
| 963 | STATIC int /* error */ |
| 964 | xfs_bmap_add_attrfork_local( |
Brian Foster | 825d75cd | 2018-07-11 22:26:21 -0700 | [diff] [blame] | 965 | struct xfs_trans *tp, /* transaction pointer */ |
| 966 | struct xfs_inode *ip, /* incore inode pointer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | int *flags) /* inode logging flags */ |
| 968 | { |
Brian Foster | 825d75cd | 2018-07-11 22:26:21 -0700 | [diff] [blame] | 969 | struct xfs_da_args dargs; /* args for dir/attr code */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | |
Darrick J. Wong | c01147d | 2022-07-09 10:56:07 -0700 | [diff] [blame] | 971 | if (ip->i_df.if_bytes <= xfs_inode_data_fork_size(ip)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | return 0; |
Dave Chinner | 1e82379 | 2013-02-11 15:58:13 +1100 | [diff] [blame] | 973 | |
Dave Chinner | c19b3b05 | 2016-02-09 16:54:58 +1100 | [diff] [blame] | 974 | if (S_ISDIR(VFS_I(ip)->i_mode)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | memset(&dargs, 0, sizeof(dargs)); |
Dave Chinner | d6cf130 | 2014-06-06 15:14:11 +1000 | [diff] [blame] | 976 | dargs.geo = ip->i_mount->m_dir_geo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | dargs.dp = ip; |
Dave Chinner | d6cf130 | 2014-06-06 15:14:11 +1000 | [diff] [blame] | 978 | dargs.total = dargs.geo->fsbcount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | dargs.whichfork = XFS_DATA_FORK; |
| 980 | dargs.trans = tp; |
Darrick J. Wong | 9eef772 | 2024-04-15 14:54:34 -0700 | [diff] [blame] | 981 | dargs.owner = ip->i_ino; |
Dave Chinner | 1e82379 | 2013-02-11 15:58:13 +1100 | [diff] [blame] | 982 | return xfs_dir2_sf_to_block(&dargs); |
| 983 | } |
| 984 | |
Dave Chinner | c19b3b05 | 2016-02-09 16:54:58 +1100 | [diff] [blame] | 985 | if (S_ISLNK(VFS_I(ip)->i_mode)) |
Brian Foster | 280253d | 2018-07-11 22:26:29 -0700 | [diff] [blame] | 986 | return xfs_bmap_local_to_extents(tp, ip, 1, flags, |
Darrick J. Wong | ef744be | 2024-04-15 14:54:58 -0700 | [diff] [blame] | 987 | XFS_DATA_FORK, xfs_symlink_local_to_remote, |
| 988 | NULL); |
Dave Chinner | 1e82379 | 2013-02-11 15:58:13 +1100 | [diff] [blame] | 989 | |
Dave Chinner | f3508bc | 2013-07-10 07:04:00 +1000 | [diff] [blame] | 990 | /* should only be called for types that support local format data */ |
| 991 | ASSERT(0); |
Darrick J. Wong | 1196f3f | 2024-02-22 12:31:51 -0800 | [diff] [blame] | 992 | xfs_bmap_mark_sick(ip, XFS_ATTR_FORK); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 993 | return -EFSCORRUPTED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | } |
| 995 | |
Dave Chinner | e6a688c | 2021-03-22 09:52:03 -0700 | [diff] [blame] | 996 | /* |
| 997 | * Set an inode attr fork offset based on the format of the data fork. |
| 998 | */ |
Christoph Hellwig | 5a981e4 | 2021-06-02 14:58:59 -0700 | [diff] [blame] | 999 | static int |
Allison Henderson | 2f3cd80 | 2018-10-18 17:21:16 +1100 | [diff] [blame] | 1000 | xfs_bmap_set_attrforkoff( |
| 1001 | struct xfs_inode *ip, |
| 1002 | int size, |
| 1003 | int *version) |
| 1004 | { |
Dave Chinner | 683ec9b | 2021-04-06 07:02:04 -0700 | [diff] [blame] | 1005 | int default_size = xfs_default_attroffset(ip) >> 3; |
| 1006 | |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 1007 | switch (ip->i_df.if_format) { |
Allison Henderson | 2f3cd80 | 2018-10-18 17:21:16 +1100 | [diff] [blame] | 1008 | case XFS_DINODE_FMT_DEV: |
Dave Chinner | 683ec9b | 2021-04-06 07:02:04 -0700 | [diff] [blame] | 1009 | ip->i_forkoff = default_size; |
Allison Henderson | 2f3cd80 | 2018-10-18 17:21:16 +1100 | [diff] [blame] | 1010 | break; |
| 1011 | case XFS_DINODE_FMT_LOCAL: |
| 1012 | case XFS_DINODE_FMT_EXTENTS: |
| 1013 | case XFS_DINODE_FMT_BTREE: |
Christoph Hellwig | 7821ea3 | 2021-03-29 11:11:44 -0700 | [diff] [blame] | 1014 | ip->i_forkoff = xfs_attr_shortform_bytesfit(ip, size); |
| 1015 | if (!ip->i_forkoff) |
Dave Chinner | 683ec9b | 2021-04-06 07:02:04 -0700 | [diff] [blame] | 1016 | ip->i_forkoff = default_size; |
Dave Chinner | 0560f31 | 2021-08-18 18:46:52 -0700 | [diff] [blame] | 1017 | else if (xfs_has_attr2(ip->i_mount) && version) |
Allison Henderson | 2f3cd80 | 2018-10-18 17:21:16 +1100 | [diff] [blame] | 1018 | *version = 2; |
| 1019 | break; |
| 1020 | default: |
| 1021 | ASSERT(0); |
| 1022 | return -EINVAL; |
| 1023 | } |
| 1024 | |
| 1025 | return 0; |
| 1026 | } |
| 1027 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | /* |
Darrick J. Wong | 55edcd1 | 2024-04-22 09:48:15 -0700 | [diff] [blame] | 1029 | * Convert inode from non-attributed to attributed. Caller must hold the |
| 1030 | * ILOCK_EXCL and the file cannot have an attr fork. |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1031 | */ |
| 1032 | int /* error code */ |
| 1033 | xfs_bmap_add_attrfork( |
Darrick J. Wong | 55edcd1 | 2024-04-22 09:48:15 -0700 | [diff] [blame] | 1034 | struct xfs_trans *tp, |
| 1035 | struct xfs_inode *ip, /* incore inode pointer */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1036 | int size, /* space new attribute needs */ |
| 1037 | int rsvd) /* xact may use reserved blks */ |
| 1038 | { |
Darrick J. Wong | 55edcd1 | 2024-04-22 09:48:15 -0700 | [diff] [blame] | 1039 | struct xfs_mount *mp = tp->t_mountp; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1040 | int version = 1; /* superblock attr version */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1041 | int logflags; /* logging flags */ |
| 1042 | int error; /* error return value */ |
| 1043 | |
Darrick J. Wong | 55edcd1 | 2024-04-22 09:48:15 -0700 | [diff] [blame] | 1044 | xfs_assert_ilocked(ip, XFS_ILOCK_EXCL); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1045 | ASSERT(!XFS_NOT_DQATTACHED(mp, ip)); |
Darrick J. Wong | 55edcd1 | 2024-04-22 09:48:15 -0700 | [diff] [blame] | 1046 | ASSERT(!xfs_inode_has_attr_fork(ip)); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1047 | |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1048 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
Allison Henderson | 2f3cd80 | 2018-10-18 17:21:16 +1100 | [diff] [blame] | 1049 | error = xfs_bmap_set_attrforkoff(ip, size, &version); |
| 1050 | if (error) |
Darrick J. Wong | 55edcd1 | 2024-04-22 09:48:15 -0700 | [diff] [blame] | 1051 | return error; |
Carlos Maiolino | 32a2b11 | 2020-07-22 09:23:10 -0700 | [diff] [blame] | 1052 | |
Darrick J. Wong | 2ed5b09 | 2022-07-09 10:56:06 -0700 | [diff] [blame] | 1053 | xfs_ifork_init_attr(ip, XFS_DINODE_FMT_EXTENTS, 0); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1054 | logflags = 0; |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 1055 | switch (ip->i_df.if_format) { |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1056 | case XFS_DINODE_FMT_LOCAL: |
Brian Foster | 825d75cd | 2018-07-11 22:26:21 -0700 | [diff] [blame] | 1057 | error = xfs_bmap_add_attrfork_local(tp, ip, &logflags); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1058 | break; |
| 1059 | case XFS_DINODE_FMT_EXTENTS: |
Brian Foster | 825d75cd | 2018-07-11 22:26:21 -0700 | [diff] [blame] | 1060 | error = xfs_bmap_add_attrfork_extents(tp, ip, &logflags); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1061 | break; |
| 1062 | case XFS_DINODE_FMT_BTREE: |
Brian Foster | 825d75cd | 2018-07-11 22:26:21 -0700 | [diff] [blame] | 1063 | error = xfs_bmap_add_attrfork_btree(tp, ip, &logflags); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1064 | break; |
| 1065 | default: |
| 1066 | error = 0; |
| 1067 | break; |
| 1068 | } |
| 1069 | if (logflags) |
| 1070 | xfs_trans_log_inode(tp, ip, logflags); |
| 1071 | if (error) |
Darrick J. Wong | 55edcd1 | 2024-04-22 09:48:15 -0700 | [diff] [blame] | 1072 | return error; |
Dave Chinner | 38c26bf | 2021-08-18 18:46:37 -0700 | [diff] [blame] | 1073 | if (!xfs_has_attr(mp) || |
| 1074 | (!xfs_has_attr2(mp) && version == 2)) { |
Dave Chinner | 61e63ec | 2015-01-22 09:10:31 +1100 | [diff] [blame] | 1075 | bool log_sb = false; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1076 | |
| 1077 | spin_lock(&mp->m_sb_lock); |
Dave Chinner | 38c26bf | 2021-08-18 18:46:37 -0700 | [diff] [blame] | 1078 | if (!xfs_has_attr(mp)) { |
| 1079 | xfs_add_attr(mp); |
Dave Chinner | 61e63ec | 2015-01-22 09:10:31 +1100 | [diff] [blame] | 1080 | log_sb = true; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1081 | } |
Dave Chinner | 38c26bf | 2021-08-18 18:46:37 -0700 | [diff] [blame] | 1082 | if (!xfs_has_attr2(mp) && version == 2) { |
| 1083 | xfs_add_attr2(mp); |
Dave Chinner | 61e63ec | 2015-01-22 09:10:31 +1100 | [diff] [blame] | 1084 | log_sb = true; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1085 | } |
Dave Chinner | 4d11a40 | 2015-01-22 09:10:26 +1100 | [diff] [blame] | 1086 | spin_unlock(&mp->m_sb_lock); |
Dave Chinner | 61e63ec | 2015-01-22 09:10:31 +1100 | [diff] [blame] | 1087 | if (log_sb) |
| 1088 | xfs_log_sb(tp); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1089 | } |
| 1090 | |
Darrick J. Wong | 55edcd1 | 2024-04-22 09:48:15 -0700 | [diff] [blame] | 1091 | return 0; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1092 | } |
| 1093 | |
| 1094 | /* |
| 1095 | * Internal and external extent tree search functions. |
| 1096 | */ |
| 1097 | |
Darrick J. Wong | e992ae8 | 2019-10-28 16:12:35 -0700 | [diff] [blame] | 1098 | struct xfs_iread_state { |
| 1099 | struct xfs_iext_cursor icur; |
| 1100 | xfs_extnum_t loaded; |
| 1101 | }; |
| 1102 | |
Darrick J. Wong | 6a3bd8f | 2023-04-11 19:00:05 -0700 | [diff] [blame] | 1103 | int |
| 1104 | xfs_bmap_complain_bad_rec( |
| 1105 | struct xfs_inode *ip, |
| 1106 | int whichfork, |
| 1107 | xfs_failaddr_t fa, |
| 1108 | const struct xfs_bmbt_irec *irec) |
| 1109 | { |
| 1110 | struct xfs_mount *mp = ip->i_mount; |
| 1111 | const char *forkname; |
| 1112 | |
| 1113 | switch (whichfork) { |
| 1114 | case XFS_DATA_FORK: forkname = "data"; break; |
| 1115 | case XFS_ATTR_FORK: forkname = "attr"; break; |
| 1116 | case XFS_COW_FORK: forkname = "CoW"; break; |
| 1117 | default: forkname = "???"; break; |
| 1118 | } |
| 1119 | |
| 1120 | xfs_warn(mp, |
| 1121 | "Bmap BTree record corruption in inode 0x%llx %s fork detected at %pS!", |
| 1122 | ip->i_ino, forkname, fa); |
| 1123 | xfs_warn(mp, |
| 1124 | "Offset 0x%llx, start block 0x%llx, block count 0x%llx state 0x%x", |
| 1125 | irec->br_startoff, irec->br_startblock, irec->br_blockcount, |
| 1126 | irec->br_state); |
| 1127 | |
| 1128 | return -EFSCORRUPTED; |
| 1129 | } |
| 1130 | |
Darrick J. Wong | e992ae8 | 2019-10-28 16:12:35 -0700 | [diff] [blame] | 1131 | /* Stuff every bmbt record from this block into the incore extent map. */ |
| 1132 | static int |
| 1133 | xfs_iread_bmbt_block( |
| 1134 | struct xfs_btree_cur *cur, |
| 1135 | int level, |
| 1136 | void *priv) |
| 1137 | { |
| 1138 | struct xfs_iread_state *ir = priv; |
| 1139 | struct xfs_mount *mp = cur->bc_mp; |
Dave Chinner | 92219c2 | 2020-03-10 17:52:53 -0700 | [diff] [blame] | 1140 | struct xfs_inode *ip = cur->bc_ino.ip; |
Darrick J. Wong | e992ae8 | 2019-10-28 16:12:35 -0700 | [diff] [blame] | 1141 | struct xfs_btree_block *block; |
| 1142 | struct xfs_buf *bp; |
| 1143 | struct xfs_bmbt_rec *frp; |
| 1144 | xfs_extnum_t num_recs; |
| 1145 | xfs_extnum_t j; |
Dave Chinner | 92219c2 | 2020-03-10 17:52:53 -0700 | [diff] [blame] | 1146 | int whichfork = cur->bc_ino.whichfork; |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 1147 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Darrick J. Wong | e992ae8 | 2019-10-28 16:12:35 -0700 | [diff] [blame] | 1148 | |
| 1149 | block = xfs_btree_get_block(cur, level, &bp); |
| 1150 | |
| 1151 | /* Abort if we find more records than nextents. */ |
| 1152 | num_recs = xfs_btree_get_numrecs(block); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 1153 | if (unlikely(ir->loaded + num_recs > ifp->if_nextents)) { |
Darrick J. Wong | e992ae8 | 2019-10-28 16:12:35 -0700 | [diff] [blame] | 1154 | xfs_warn(ip->i_mount, "corrupt dinode %llu, (btree extents).", |
| 1155 | (unsigned long long)ip->i_ino); |
| 1156 | xfs_inode_verifier_error(ip, -EFSCORRUPTED, __func__, block, |
| 1157 | sizeof(*block), __this_address); |
Darrick J. Wong | 1196f3f | 2024-02-22 12:31:51 -0800 | [diff] [blame] | 1158 | xfs_bmap_mark_sick(ip, whichfork); |
Darrick J. Wong | e992ae8 | 2019-10-28 16:12:35 -0700 | [diff] [blame] | 1159 | return -EFSCORRUPTED; |
| 1160 | } |
| 1161 | |
| 1162 | /* Copy records into the incore cache. */ |
Darrick J. Wong | 79124b3 | 2024-08-30 15:37:20 -0700 | [diff] [blame] | 1163 | frp = xfs_bmbt_rec_addr(mp, block, 1); |
Darrick J. Wong | e992ae8 | 2019-10-28 16:12:35 -0700 | [diff] [blame] | 1164 | for (j = 0; j < num_recs; j++, frp++, ir->loaded++) { |
| 1165 | struct xfs_bmbt_irec new; |
| 1166 | xfs_failaddr_t fa; |
| 1167 | |
| 1168 | xfs_bmbt_disk_get_all(frp, &new); |
| 1169 | fa = xfs_bmap_validate_extent(ip, whichfork, &new); |
| 1170 | if (fa) { |
| 1171 | xfs_inode_verifier_error(ip, -EFSCORRUPTED, |
| 1172 | "xfs_iread_extents(2)", frp, |
| 1173 | sizeof(*frp), fa); |
Darrick J. Wong | 1196f3f | 2024-02-22 12:31:51 -0800 | [diff] [blame] | 1174 | xfs_bmap_mark_sick(ip, whichfork); |
Darrick J. Wong | 6a3bd8f | 2023-04-11 19:00:05 -0700 | [diff] [blame] | 1175 | return xfs_bmap_complain_bad_rec(ip, whichfork, fa, |
| 1176 | &new); |
Darrick J. Wong | e992ae8 | 2019-10-28 16:12:35 -0700 | [diff] [blame] | 1177 | } |
| 1178 | xfs_iext_insert(ip, &ir->icur, &new, |
| 1179 | xfs_bmap_fork_to_state(whichfork)); |
| 1180 | trace_xfs_read_extent(ip, &ir->icur, |
| 1181 | xfs_bmap_fork_to_state(whichfork), _THIS_IP_); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 1182 | xfs_iext_next(ifp, &ir->icur); |
Darrick J. Wong | e992ae8 | 2019-10-28 16:12:35 -0700 | [diff] [blame] | 1183 | } |
| 1184 | |
| 1185 | return 0; |
| 1186 | } |
| 1187 | |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1188 | /* |
Christoph Hellwig | 211e95b | 2017-10-23 16:32:39 -0700 | [diff] [blame] | 1189 | * Read in extents from a btree-format inode. |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1190 | */ |
Christoph Hellwig | 211e95b | 2017-10-23 16:32:39 -0700 | [diff] [blame] | 1191 | int |
| 1192 | xfs_iread_extents( |
| 1193 | struct xfs_trans *tp, |
| 1194 | struct xfs_inode *ip, |
| 1195 | int whichfork) |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1196 | { |
Darrick J. Wong | e992ae8 | 2019-10-28 16:12:35 -0700 | [diff] [blame] | 1197 | struct xfs_iread_state ir; |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 1198 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Darrick J. Wong | e992ae8 | 2019-10-28 16:12:35 -0700 | [diff] [blame] | 1199 | struct xfs_mount *mp = ip->i_mount; |
| 1200 | struct xfs_btree_cur *cur; |
Christoph Hellwig | 211e95b | 2017-10-23 16:32:39 -0700 | [diff] [blame] | 1201 | int error; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1202 | |
Christoph Hellwig | b2197a3 | 2021-04-13 11:15:12 -0700 | [diff] [blame] | 1203 | if (!xfs_need_iread_extents(ifp)) |
Christoph Hellwig | 862a804 | 2021-04-13 11:15:09 -0700 | [diff] [blame] | 1204 | return 0; |
| 1205 | |
Matthew Wilcox (Oracle) | 3fed24f | 2024-02-19 15:41:12 +0000 | [diff] [blame] | 1206 | xfs_assert_ilocked(ip, XFS_ILOCK_EXCL); |
Christoph Hellwig | 211e95b | 2017-10-23 16:32:39 -0700 | [diff] [blame] | 1207 | |
Darrick J. Wong | e992ae8 | 2019-10-28 16:12:35 -0700 | [diff] [blame] | 1208 | ir.loaded = 0; |
| 1209 | xfs_iext_first(ifp, &ir.icur); |
| 1210 | cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); |
| 1211 | error = xfs_btree_visit_blocks(cur, xfs_iread_bmbt_block, |
| 1212 | XFS_BTREE_VISIT_RECORDS, &ir); |
| 1213 | xfs_btree_del_cursor(cur, error); |
| 1214 | if (error) |
| 1215 | goto out; |
| 1216 | |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 1217 | if (XFS_IS_CORRUPT(mp, ir.loaded != ifp->if_nextents)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 1218 | xfs_bmap_mark_sick(ip, whichfork); |
Darrick J. Wong | e992ae8 | 2019-10-28 16:12:35 -0700 | [diff] [blame] | 1219 | error = -EFSCORRUPTED; |
| 1220 | goto out; |
| 1221 | } |
| 1222 | ASSERT(ir.loaded == xfs_iext_count(ifp)); |
Darrick J. Wong | c95356c | 2023-04-12 15:49:10 +1000 | [diff] [blame] | 1223 | /* |
| 1224 | * Use release semantics so that we can use acquire semantics in |
| 1225 | * xfs_need_iread_extents and be guaranteed to see a valid mapping tree |
| 1226 | * after that load. |
| 1227 | */ |
| 1228 | smp_store_release(&ifp->if_needextents, 0); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1229 | return 0; |
Christoph Hellwig | 211e95b | 2017-10-23 16:32:39 -0700 | [diff] [blame] | 1230 | out: |
Darrick J. Wong | 1196f3f | 2024-02-22 12:31:51 -0800 | [diff] [blame] | 1231 | if (xfs_metadata_is_sick(error)) |
| 1232 | xfs_bmap_mark_sick(ip, whichfork); |
Christoph Hellwig | 211e95b | 2017-10-23 16:32:39 -0700 | [diff] [blame] | 1233 | xfs_iext_destroy(ifp); |
| 1234 | return error; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1235 | } |
| 1236 | |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1237 | /* |
Christoph Hellwig | 29b3e94 | 2017-10-19 11:08:52 -0700 | [diff] [blame] | 1238 | * Returns the relative block number of the first unused block(s) in the given |
| 1239 | * fork with at least "len" logically contiguous blocks free. This is the |
| 1240 | * lowest-address hole if the fork has holes, else the first block past the end |
| 1241 | * of fork. Return 0 if the fork is currently local (in-inode). |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1242 | */ |
| 1243 | int /* error */ |
| 1244 | xfs_bmap_first_unused( |
Christoph Hellwig | 29b3e94 | 2017-10-19 11:08:52 -0700 | [diff] [blame] | 1245 | struct xfs_trans *tp, /* transaction pointer */ |
| 1246 | struct xfs_inode *ip, /* incore inode */ |
| 1247 | xfs_extlen_t len, /* size of hole to find */ |
| 1248 | xfs_fileoff_t *first_unused, /* unused block */ |
| 1249 | int whichfork) /* data or attr fork */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1250 | { |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 1251 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Christoph Hellwig | 29b3e94 | 2017-10-19 11:08:52 -0700 | [diff] [blame] | 1252 | struct xfs_bmbt_irec got; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1253 | struct xfs_iext_cursor icur; |
Christoph Hellwig | 29b3e94 | 2017-10-19 11:08:52 -0700 | [diff] [blame] | 1254 | xfs_fileoff_t lastaddr = 0; |
| 1255 | xfs_fileoff_t lowest, max; |
| 1256 | int error; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1257 | |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 1258 | if (ifp->if_format == XFS_DINODE_FMT_LOCAL) { |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1259 | *first_unused = 0; |
| 1260 | return 0; |
| 1261 | } |
Christoph Hellwig | f2285c1 | 2017-08-29 15:44:12 -0700 | [diff] [blame] | 1262 | |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 1263 | ASSERT(xfs_ifork_has_extents(ifp)); |
| 1264 | |
Christoph Hellwig | 862a804 | 2021-04-13 11:15:09 -0700 | [diff] [blame] | 1265 | error = xfs_iread_extents(tp, ip, whichfork); |
| 1266 | if (error) |
| 1267 | return error; |
Christoph Hellwig | f2285c1 | 2017-08-29 15:44:12 -0700 | [diff] [blame] | 1268 | |
Christoph Hellwig | 29b3e94 | 2017-10-19 11:08:52 -0700 | [diff] [blame] | 1269 | lowest = max = *first_unused; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1270 | for_each_xfs_iext(ifp, &icur, &got) { |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1271 | /* |
| 1272 | * See if the hole before this extent will work. |
| 1273 | */ |
Christoph Hellwig | f2285c1 | 2017-08-29 15:44:12 -0700 | [diff] [blame] | 1274 | if (got.br_startoff >= lowest + len && |
Christoph Hellwig | 29b3e94 | 2017-10-19 11:08:52 -0700 | [diff] [blame] | 1275 | got.br_startoff - max >= len) |
| 1276 | break; |
Christoph Hellwig | f2285c1 | 2017-08-29 15:44:12 -0700 | [diff] [blame] | 1277 | lastaddr = got.br_startoff + got.br_blockcount; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1278 | max = XFS_FILEOFF_MAX(lastaddr, lowest); |
| 1279 | } |
Christoph Hellwig | 29b3e94 | 2017-10-19 11:08:52 -0700 | [diff] [blame] | 1280 | |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1281 | *first_unused = max; |
| 1282 | return 0; |
| 1283 | } |
| 1284 | |
| 1285 | /* |
Zhi Yong Wu | 02bb487 | 2013-08-12 03:14:54 +0000 | [diff] [blame] | 1286 | * Returns the file-relative block number of the last block - 1 before |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1287 | * last_block (input value) in the file. |
| 1288 | * This is not based on i_size, it is based on the extent records. |
| 1289 | * Returns 0 for local files, as they do not have extent records. |
| 1290 | */ |
| 1291 | int /* error */ |
| 1292 | xfs_bmap_last_before( |
Christoph Hellwig | 86685f7 | 2016-11-24 11:39:38 +1100 | [diff] [blame] | 1293 | struct xfs_trans *tp, /* transaction pointer */ |
| 1294 | struct xfs_inode *ip, /* incore inode */ |
| 1295 | xfs_fileoff_t *last_block, /* last block */ |
| 1296 | int whichfork) /* data or attr fork */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1297 | { |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 1298 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Christoph Hellwig | 86685f7 | 2016-11-24 11:39:38 +1100 | [diff] [blame] | 1299 | struct xfs_bmbt_irec got; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1300 | struct xfs_iext_cursor icur; |
Christoph Hellwig | 86685f7 | 2016-11-24 11:39:38 +1100 | [diff] [blame] | 1301 | int error; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1302 | |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 1303 | switch (ifp->if_format) { |
Christoph Hellwig | 86685f7 | 2016-11-24 11:39:38 +1100 | [diff] [blame] | 1304 | case XFS_DINODE_FMT_LOCAL: |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1305 | *last_block = 0; |
| 1306 | return 0; |
Christoph Hellwig | 86685f7 | 2016-11-24 11:39:38 +1100 | [diff] [blame] | 1307 | case XFS_DINODE_FMT_BTREE: |
| 1308 | case XFS_DINODE_FMT_EXTENTS: |
| 1309 | break; |
| 1310 | default: |
Darrick J. Wong | a5155b8 | 2019-11-02 09:40:53 -0700 | [diff] [blame] | 1311 | ASSERT(0); |
Darrick J. Wong | 1196f3f | 2024-02-22 12:31:51 -0800 | [diff] [blame] | 1312 | xfs_bmap_mark_sick(ip, whichfork); |
Darrick J. Wong | c2414ad | 2019-10-28 16:12:34 -0700 | [diff] [blame] | 1313 | return -EFSCORRUPTED; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1314 | } |
Christoph Hellwig | 86685f7 | 2016-11-24 11:39:38 +1100 | [diff] [blame] | 1315 | |
Christoph Hellwig | 862a804 | 2021-04-13 11:15:09 -0700 | [diff] [blame] | 1316 | error = xfs_iread_extents(tp, ip, whichfork); |
| 1317 | if (error) |
| 1318 | return error; |
Christoph Hellwig | 86685f7 | 2016-11-24 11:39:38 +1100 | [diff] [blame] | 1319 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1320 | if (!xfs_iext_lookup_extent_before(ip, ifp, last_block, &icur, &got)) |
Christoph Hellwig | dc56015 | 2017-10-23 16:32:39 -0700 | [diff] [blame] | 1321 | *last_block = 0; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1322 | return 0; |
| 1323 | } |
| 1324 | |
Dave Chinner | 6898811 | 2013-08-12 20:49:42 +1000 | [diff] [blame] | 1325 | int |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1326 | xfs_bmap_last_extent( |
| 1327 | struct xfs_trans *tp, |
| 1328 | struct xfs_inode *ip, |
| 1329 | int whichfork, |
| 1330 | struct xfs_bmbt_irec *rec, |
| 1331 | int *is_empty) |
| 1332 | { |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 1333 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1334 | struct xfs_iext_cursor icur; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1335 | int error; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1336 | |
Christoph Hellwig | 862a804 | 2021-04-13 11:15:09 -0700 | [diff] [blame] | 1337 | error = xfs_iread_extents(tp, ip, whichfork); |
| 1338 | if (error) |
| 1339 | return error; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1340 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1341 | xfs_iext_last(ifp, &icur); |
| 1342 | if (!xfs_iext_get_extent(ifp, &icur, rec)) |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1343 | *is_empty = 1; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1344 | else |
| 1345 | *is_empty = 0; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1346 | return 0; |
| 1347 | } |
| 1348 | |
| 1349 | /* |
| 1350 | * Check the last inode extent to determine whether this allocation will result |
| 1351 | * in blocks being allocated at the end of the file. When we allocate new data |
| 1352 | * blocks at the end of the file which do not start at the previous data block, |
| 1353 | * we will try to align the new blocks at stripe unit boundaries. |
| 1354 | * |
Dave Chinner | 6e708bc | 2013-11-22 10:41:16 +1100 | [diff] [blame] | 1355 | * Returns 1 in bma->aeof if the file (fork) is empty as any new write will be |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1356 | * at, or past the EOF. |
| 1357 | */ |
| 1358 | STATIC int |
| 1359 | xfs_bmap_isaeof( |
| 1360 | struct xfs_bmalloca *bma, |
| 1361 | int whichfork) |
| 1362 | { |
| 1363 | struct xfs_bmbt_irec rec; |
| 1364 | int is_empty; |
| 1365 | int error; |
| 1366 | |
Thomas Meyer | 749f24f | 2017-10-09 11:38:54 -0700 | [diff] [blame] | 1367 | bma->aeof = false; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1368 | error = xfs_bmap_last_extent(NULL, bma->ip, whichfork, &rec, |
| 1369 | &is_empty); |
Dave Chinner | 6e708bc | 2013-11-22 10:41:16 +1100 | [diff] [blame] | 1370 | if (error) |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1371 | return error; |
| 1372 | |
Dave Chinner | 6e708bc | 2013-11-22 10:41:16 +1100 | [diff] [blame] | 1373 | if (is_empty) { |
Thomas Meyer | 749f24f | 2017-10-09 11:38:54 -0700 | [diff] [blame] | 1374 | bma->aeof = true; |
Dave Chinner | 6e708bc | 2013-11-22 10:41:16 +1100 | [diff] [blame] | 1375 | return 0; |
| 1376 | } |
| 1377 | |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1378 | /* |
| 1379 | * Check if we are allocation or past the last extent, or at least into |
| 1380 | * the last delayed allocated extent. |
| 1381 | */ |
| 1382 | bma->aeof = bma->offset >= rec.br_startoff + rec.br_blockcount || |
| 1383 | (bma->offset >= rec.br_startoff && |
| 1384 | isnullstartblock(rec.br_startblock)); |
| 1385 | return 0; |
| 1386 | } |
| 1387 | |
| 1388 | /* |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1389 | * Returns the file-relative block number of the first block past eof in |
| 1390 | * the file. This is not based on i_size, it is based on the extent records. |
| 1391 | * Returns 0 for local files, as they do not have extent records. |
| 1392 | */ |
| 1393 | int |
| 1394 | xfs_bmap_last_offset( |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1395 | struct xfs_inode *ip, |
| 1396 | xfs_fileoff_t *last_block, |
| 1397 | int whichfork) |
| 1398 | { |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 1399 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1400 | struct xfs_bmbt_irec rec; |
| 1401 | int is_empty; |
| 1402 | int error; |
| 1403 | |
| 1404 | *last_block = 0; |
| 1405 | |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 1406 | if (ifp->if_format == XFS_DINODE_FMT_LOCAL) |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1407 | return 0; |
| 1408 | |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 1409 | if (XFS_IS_CORRUPT(ip->i_mount, !xfs_ifork_has_extents(ifp))) { |
| 1410 | xfs_bmap_mark_sick(ip, whichfork); |
Darrick J. Wong | c2414ad | 2019-10-28 16:12:34 -0700 | [diff] [blame] | 1411 | return -EFSCORRUPTED; |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 1412 | } |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1413 | |
| 1414 | error = xfs_bmap_last_extent(NULL, ip, whichfork, &rec, &is_empty); |
| 1415 | if (error || is_empty) |
| 1416 | return error; |
| 1417 | |
| 1418 | *last_block = rec.br_startoff + rec.br_blockcount; |
| 1419 | return 0; |
| 1420 | } |
| 1421 | |
| 1422 | /* |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 1423 | * Extent tree manipulation functions used during allocation. |
| 1424 | */ |
| 1425 | |
| 1426 | /* |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 1427 | * Convert a delayed allocation to a real allocation. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1428 | */ |
| 1429 | STATIC int /* error */ |
| 1430 | xfs_bmap_add_extent_delay_real( |
Darrick J. Wong | 60b4984 | 2016-10-03 09:11:34 -0700 | [diff] [blame] | 1431 | struct xfs_bmalloca *bma, |
| 1432 | int whichfork) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1433 | { |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 1434 | struct xfs_mount *mp = bma->ip->i_mount; |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 1435 | struct xfs_ifork *ifp = xfs_ifork_ptr(bma->ip, whichfork); |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1436 | struct xfs_bmbt_irec *new = &bma->got; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1437 | int error; /* error return value */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1438 | int i; /* temp state */ |
| 1439 | xfs_fileoff_t new_endoff; /* end offset of new entry */ |
| 1440 | xfs_bmbt_irec_t r[3]; /* neighbor extent entries */ |
| 1441 | /* left is 0, right is 1, prev is 2 */ |
| 1442 | int rval=0; /* return value (logging flags) */ |
Dave Chinner | 0e5b8e4 | 2022-04-21 10:46:01 +1000 | [diff] [blame] | 1443 | uint32_t state = xfs_bmap_fork_to_state(whichfork); |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 1444 | xfs_filblks_t da_new; /* new count del alloc blocks used */ |
| 1445 | xfs_filblks_t da_old; /* old count del alloc blocks used */ |
| 1446 | xfs_filblks_t temp=0; /* value for da_new calculations */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1447 | int tmp_rval; /* partial logging flags */ |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1448 | struct xfs_bmbt_irec old; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1449 | |
Darrick J. Wong | 60b4984 | 2016-10-03 09:11:34 -0700 | [diff] [blame] | 1450 | ASSERT(whichfork != XFS_ATTR_FORK); |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 1451 | ASSERT(!isnullstartblock(new->br_startblock)); |
Christoph Hellwig | e9e66df | 2024-02-22 12:35:13 -0800 | [diff] [blame] | 1452 | ASSERT(!bma->cur || (bma->cur->bc_flags & XFS_BTREE_BMBT_WASDEL)); |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 1453 | |
Bill O'Donnell | ff6d6af | 2015-10-12 18:21:22 +1100 | [diff] [blame] | 1454 | XFS_STATS_INC(mp, xs_add_exlist); |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 1455 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1456 | #define LEFT r[0] |
| 1457 | #define RIGHT r[1] |
| 1458 | #define PREV r[2] |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1459 | |
| 1460 | /* |
| 1461 | * Set up a bunch of variables to make the tests simpler. |
| 1462 | */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1463 | xfs_iext_get_extent(ifp, &bma->icur, &PREV); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1464 | new_endoff = new->br_startoff + new->br_blockcount; |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1465 | ASSERT(isnullstartblock(PREV.br_startblock)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1466 | ASSERT(PREV.br_startoff <= new->br_startoff); |
| 1467 | ASSERT(PREV.br_startoff + PREV.br_blockcount >= new_endoff); |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 1468 | |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 1469 | da_old = startblockval(PREV.br_startblock); |
| 1470 | da_new = 0; |
| 1471 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1472 | /* |
| 1473 | * Set flags determining what part of the previous delayed allocation |
| 1474 | * extent is being replaced by a real allocation. |
| 1475 | */ |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 1476 | if (PREV.br_startoff == new->br_startoff) |
| 1477 | state |= BMAP_LEFT_FILLING; |
| 1478 | if (PREV.br_startoff + PREV.br_blockcount == new_endoff) |
| 1479 | state |= BMAP_RIGHT_FILLING; |
| 1480 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1481 | /* |
| 1482 | * Check and set flags if this segment has a left neighbor. |
| 1483 | * Don't set contiguous if the combined extent would be too large. |
| 1484 | */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1485 | if (xfs_iext_peek_prev_extent(ifp, &bma->icur, &LEFT)) { |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 1486 | state |= BMAP_LEFT_VALID; |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 1487 | if (isnullstartblock(LEFT.br_startblock)) |
| 1488 | state |= BMAP_LEFT_DELAY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1489 | } |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 1490 | |
| 1491 | if ((state & BMAP_LEFT_VALID) && !(state & BMAP_LEFT_DELAY) && |
| 1492 | LEFT.br_startoff + LEFT.br_blockcount == new->br_startoff && |
| 1493 | LEFT.br_startblock + LEFT.br_blockcount == new->br_startblock && |
| 1494 | LEFT.br_state == new->br_state && |
Chandan Babu R | 95f0b95 | 2021-08-09 12:05:22 +0530 | [diff] [blame] | 1495 | LEFT.br_blockcount + new->br_blockcount <= XFS_MAX_BMBT_EXTLEN) |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 1496 | state |= BMAP_LEFT_CONTIG; |
| 1497 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1498 | /* |
| 1499 | * Check and set flags if this segment has a right neighbor. |
| 1500 | * Don't set contiguous if the combined extent would be too large. |
| 1501 | * Also check for all-three-contiguous being too large. |
| 1502 | */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1503 | if (xfs_iext_peek_next_extent(ifp, &bma->icur, &RIGHT)) { |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 1504 | state |= BMAP_RIGHT_VALID; |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 1505 | if (isnullstartblock(RIGHT.br_startblock)) |
| 1506 | state |= BMAP_RIGHT_DELAY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1507 | } |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 1508 | |
| 1509 | if ((state & BMAP_RIGHT_VALID) && !(state & BMAP_RIGHT_DELAY) && |
| 1510 | new_endoff == RIGHT.br_startoff && |
| 1511 | new->br_startblock + new->br_blockcount == RIGHT.br_startblock && |
| 1512 | new->br_state == RIGHT.br_state && |
Chandan Babu R | 95f0b95 | 2021-08-09 12:05:22 +0530 | [diff] [blame] | 1513 | new->br_blockcount + RIGHT.br_blockcount <= XFS_MAX_BMBT_EXTLEN && |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 1514 | ((state & (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | |
| 1515 | BMAP_RIGHT_FILLING)) != |
| 1516 | (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | |
| 1517 | BMAP_RIGHT_FILLING) || |
| 1518 | LEFT.br_blockcount + new->br_blockcount + RIGHT.br_blockcount |
Chandan Babu R | 95f0b95 | 2021-08-09 12:05:22 +0530 | [diff] [blame] | 1519 | <= XFS_MAX_BMBT_EXTLEN)) |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 1520 | state |= BMAP_RIGHT_CONTIG; |
| 1521 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1522 | error = 0; |
| 1523 | /* |
| 1524 | * Switch out based on the FILLING and CONTIG state bits. |
| 1525 | */ |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 1526 | switch (state & (BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | |
| 1527 | BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG)) { |
| 1528 | case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | |
| 1529 | BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1530 | /* |
| 1531 | * Filling in all of a previously delayed allocation extent. |
| 1532 | * The left and right neighbors are both contiguous with new. |
| 1533 | */ |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1534 | LEFT.br_blockcount += PREV.br_blockcount + RIGHT.br_blockcount; |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1535 | |
Christoph Hellwig | c38ccf5 | 2017-11-03 10:34:47 -0700 | [diff] [blame] | 1536 | xfs_iext_remove(bma->ip, &bma->icur, state); |
| 1537 | xfs_iext_remove(bma->ip, &bma->icur, state); |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1538 | xfs_iext_prev(ifp, &bma->icur); |
| 1539 | xfs_iext_update_extent(bma->ip, state, &bma->icur, &LEFT); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 1540 | ifp->if_nextents--; |
Christoph Hellwig | 0d04554 | 2017-11-03 10:34:39 -0700 | [diff] [blame] | 1541 | |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1542 | if (bma->cur == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1543 | rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; |
| 1544 | else { |
| 1545 | rval = XFS_ILOG_CORE; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 1546 | error = xfs_bmbt_lookup_eq(bma->cur, &RIGHT, &i); |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1547 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1548 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1549 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 1550 | xfs_btree_mark_sick(bma->cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1551 | error = -EFSCORRUPTED; |
| 1552 | goto done; |
| 1553 | } |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1554 | error = xfs_btree_delete(bma->cur, &i); |
| 1555 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1556 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1557 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 1558 | xfs_btree_mark_sick(bma->cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1559 | error = -EFSCORRUPTED; |
| 1560 | goto done; |
| 1561 | } |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1562 | error = xfs_btree_decrement(bma->cur, 0, &i); |
| 1563 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1564 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1565 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 1566 | xfs_btree_mark_sick(bma->cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1567 | error = -EFSCORRUPTED; |
| 1568 | goto done; |
| 1569 | } |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 1570 | error = xfs_bmbt_update(bma->cur, &LEFT); |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1571 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | goto done; |
| 1573 | } |
Christoph Hellwig | d69bee6 | 2024-04-29 08:15:27 +0200 | [diff] [blame] | 1574 | ASSERT(da_new <= da_old); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1575 | break; |
| 1576 | |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 1577 | case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1578 | /* |
| 1579 | * Filling in all of a previously delayed allocation extent. |
| 1580 | * The left neighbor is contiguous, the right is not. |
| 1581 | */ |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1582 | old = LEFT; |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1583 | LEFT.br_blockcount += PREV.br_blockcount; |
Christoph Hellwig | 0d04554 | 2017-11-03 10:34:39 -0700 | [diff] [blame] | 1584 | |
Christoph Hellwig | c38ccf5 | 2017-11-03 10:34:47 -0700 | [diff] [blame] | 1585 | xfs_iext_remove(bma->ip, &bma->icur, state); |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1586 | xfs_iext_prev(ifp, &bma->icur); |
| 1587 | xfs_iext_update_extent(bma->ip, state, &bma->icur, &LEFT); |
Christoph Hellwig | ec90c55 | 2011-05-23 08:52:53 +0000 | [diff] [blame] | 1588 | |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1589 | if (bma->cur == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1590 | rval = XFS_ILOG_DEXT; |
| 1591 | else { |
| 1592 | rval = 0; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 1593 | error = xfs_bmbt_lookup_eq(bma->cur, &old, &i); |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1594 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1595 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1596 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 1597 | xfs_btree_mark_sick(bma->cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1598 | error = -EFSCORRUPTED; |
| 1599 | goto done; |
| 1600 | } |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 1601 | error = xfs_bmbt_update(bma->cur, &LEFT); |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1602 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1603 | goto done; |
| 1604 | } |
Christoph Hellwig | d69bee6 | 2024-04-29 08:15:27 +0200 | [diff] [blame] | 1605 | ASSERT(da_new <= da_old); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1606 | break; |
| 1607 | |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 1608 | case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1609 | /* |
| 1610 | * Filling in all of a previously delayed allocation extent. |
Dave Chinner | 9230a0b | 2018-11-19 22:50:08 -0800 | [diff] [blame] | 1611 | * The right neighbor is contiguous, the left is not. Take care |
| 1612 | * with delay -> unwritten extent allocation here because the |
| 1613 | * delalloc record we are overwriting is always written. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1614 | */ |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1615 | PREV.br_startblock = new->br_startblock; |
| 1616 | PREV.br_blockcount += RIGHT.br_blockcount; |
Dave Chinner | 9230a0b | 2018-11-19 22:50:08 -0800 | [diff] [blame] | 1617 | PREV.br_state = new->br_state; |
Christoph Hellwig | 0d04554 | 2017-11-03 10:34:39 -0700 | [diff] [blame] | 1618 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1619 | xfs_iext_next(ifp, &bma->icur); |
Christoph Hellwig | c38ccf5 | 2017-11-03 10:34:47 -0700 | [diff] [blame] | 1620 | xfs_iext_remove(bma->ip, &bma->icur, state); |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1621 | xfs_iext_prev(ifp, &bma->icur); |
| 1622 | xfs_iext_update_extent(bma->ip, state, &bma->icur, &PREV); |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1623 | |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1624 | if (bma->cur == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1625 | rval = XFS_ILOG_DEXT; |
| 1626 | else { |
| 1627 | rval = 0; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 1628 | error = xfs_bmbt_lookup_eq(bma->cur, &RIGHT, &i); |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1629 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1630 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1631 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 1632 | xfs_btree_mark_sick(bma->cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1633 | error = -EFSCORRUPTED; |
| 1634 | goto done; |
| 1635 | } |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 1636 | error = xfs_bmbt_update(bma->cur, &PREV); |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1637 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1638 | goto done; |
| 1639 | } |
Christoph Hellwig | d69bee6 | 2024-04-29 08:15:27 +0200 | [diff] [blame] | 1640 | ASSERT(da_new <= da_old); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1641 | break; |
| 1642 | |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 1643 | case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1644 | /* |
| 1645 | * Filling in all of a previously delayed allocation extent. |
| 1646 | * Neither the left nor right neighbors are contiguous with |
| 1647 | * the new one. |
| 1648 | */ |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1649 | PREV.br_startblock = new->br_startblock; |
| 1650 | PREV.br_state = new->br_state; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1651 | xfs_iext_update_extent(bma->ip, state, &bma->icur, &PREV); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 1652 | ifp->if_nextents++; |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1653 | |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1654 | if (bma->cur == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1655 | rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; |
| 1656 | else { |
| 1657 | rval = XFS_ILOG_CORE; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 1658 | error = xfs_bmbt_lookup_eq(bma->cur, new, &i); |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1659 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1660 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1661 | if (XFS_IS_CORRUPT(mp, i != 0)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 1662 | xfs_btree_mark_sick(bma->cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1663 | error = -EFSCORRUPTED; |
| 1664 | goto done; |
| 1665 | } |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1666 | error = xfs_btree_insert(bma->cur, &i); |
| 1667 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1668 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1669 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 1670 | xfs_btree_mark_sick(bma->cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1671 | error = -EFSCORRUPTED; |
| 1672 | goto done; |
| 1673 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1674 | } |
Christoph Hellwig | d69bee6 | 2024-04-29 08:15:27 +0200 | [diff] [blame] | 1675 | ASSERT(da_new <= da_old); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1676 | break; |
| 1677 | |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 1678 | case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1679 | /* |
| 1680 | * Filling in the first part of a previous delayed allocation. |
| 1681 | * The left neighbor is contiguous. |
| 1682 | */ |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1683 | old = LEFT; |
| 1684 | temp = PREV.br_blockcount - new->br_blockcount; |
| 1685 | da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp), |
| 1686 | startblockval(PREV.br_startblock)); |
| 1687 | |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1688 | LEFT.br_blockcount += new->br_blockcount; |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1689 | |
Christoph Hellwig | bf99971 | 2017-11-03 10:34:38 -0700 | [diff] [blame] | 1690 | PREV.br_blockcount = temp; |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1691 | PREV.br_startoff += new->br_blockcount; |
| 1692 | PREV.br_startblock = nullstartblock(da_new); |
Christoph Hellwig | 0d04554 | 2017-11-03 10:34:39 -0700 | [diff] [blame] | 1693 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1694 | xfs_iext_update_extent(bma->ip, state, &bma->icur, &PREV); |
| 1695 | xfs_iext_prev(ifp, &bma->icur); |
| 1696 | xfs_iext_update_extent(bma->ip, state, &bma->icur, &LEFT); |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1697 | |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1698 | if (bma->cur == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1699 | rval = XFS_ILOG_DEXT; |
| 1700 | else { |
| 1701 | rval = 0; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 1702 | error = xfs_bmbt_lookup_eq(bma->cur, &old, &i); |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1703 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1704 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1705 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 1706 | xfs_btree_mark_sick(bma->cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1707 | error = -EFSCORRUPTED; |
| 1708 | goto done; |
| 1709 | } |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 1710 | error = xfs_bmbt_update(bma->cur, &LEFT); |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1711 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1712 | goto done; |
| 1713 | } |
Christoph Hellwig | d69bee6 | 2024-04-29 08:15:27 +0200 | [diff] [blame] | 1714 | ASSERT(da_new <= da_old); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1715 | break; |
| 1716 | |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 1717 | case BMAP_LEFT_FILLING: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1718 | /* |
| 1719 | * Filling in the first part of a previous delayed allocation. |
| 1720 | * The left neighbor is not contiguous. |
| 1721 | */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1722 | xfs_iext_update_extent(bma->ip, state, &bma->icur, new); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 1723 | ifp->if_nextents++; |
| 1724 | |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1725 | if (bma->cur == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1726 | rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; |
| 1727 | else { |
| 1728 | rval = XFS_ILOG_CORE; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 1729 | error = xfs_bmbt_lookup_eq(bma->cur, new, &i); |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1730 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1731 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1732 | if (XFS_IS_CORRUPT(mp, i != 0)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 1733 | xfs_btree_mark_sick(bma->cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1734 | error = -EFSCORRUPTED; |
| 1735 | goto done; |
| 1736 | } |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1737 | error = xfs_btree_insert(bma->cur, &i); |
| 1738 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1739 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1740 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 1741 | xfs_btree_mark_sick(bma->cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1742 | error = -EFSCORRUPTED; |
| 1743 | goto done; |
| 1744 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1745 | } |
Christoph Hellwig | 8096b1e | 2011-12-18 20:00:07 +0000 | [diff] [blame] | 1746 | |
Darrick J. Wong | 6d3eb1e | 2016-01-04 16:12:42 +1100 | [diff] [blame] | 1747 | if (xfs_bmap_needs_btree(bma->ip, whichfork)) { |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1748 | error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, |
Brian Foster | 280253d | 2018-07-11 22:26:29 -0700 | [diff] [blame] | 1749 | &bma->cur, 1, &tmp_rval, whichfork); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1750 | rval |= tmp_rval; |
| 1751 | if (error) |
| 1752 | goto done; |
| 1753 | } |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1754 | |
| 1755 | temp = PREV.br_blockcount - new->br_blockcount; |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1756 | da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp), |
Eric Sandeen | 9d87c31 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 1757 | startblockval(PREV.br_startblock) - |
Christoph Hellwig | 88ee2f4 | 2024-02-22 12:37:03 -0800 | [diff] [blame] | 1758 | (bma->cur ? bma->cur->bc_bmap.allocated : 0)); |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1759 | |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1760 | PREV.br_startoff = new_endoff; |
| 1761 | PREV.br_blockcount = temp; |
| 1762 | PREV.br_startblock = nullstartblock(da_new); |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1763 | xfs_iext_next(ifp, &bma->icur); |
Christoph Hellwig | 0254c2f | 2017-11-03 10:34:46 -0700 | [diff] [blame] | 1764 | xfs_iext_insert(bma->ip, &bma->icur, &PREV, state); |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1765 | xfs_iext_prev(ifp, &bma->icur); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1766 | break; |
| 1767 | |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 1768 | case BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1769 | /* |
| 1770 | * Filling in the last part of a previous delayed allocation. |
| 1771 | * The right neighbor is contiguous with the new allocation. |
| 1772 | */ |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1773 | old = RIGHT; |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1774 | RIGHT.br_startoff = new->br_startoff; |
| 1775 | RIGHT.br_startblock = new->br_startblock; |
| 1776 | RIGHT.br_blockcount += new->br_blockcount; |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1777 | |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1778 | if (bma->cur == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1779 | rval = XFS_ILOG_DEXT; |
| 1780 | else { |
| 1781 | rval = 0; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 1782 | error = xfs_bmbt_lookup_eq(bma->cur, &old, &i); |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1783 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1784 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1785 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 1786 | xfs_btree_mark_sick(bma->cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1787 | error = -EFSCORRUPTED; |
| 1788 | goto done; |
| 1789 | } |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 1790 | error = xfs_bmbt_update(bma->cur, &RIGHT); |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1791 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1792 | goto done; |
| 1793 | } |
Christoph Hellwig | ec90c55 | 2011-05-23 08:52:53 +0000 | [diff] [blame] | 1794 | |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1795 | temp = PREV.br_blockcount - new->br_blockcount; |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1796 | da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp), |
Eric Sandeen | 9d87c31 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 1797 | startblockval(PREV.br_startblock)); |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1798 | |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1799 | PREV.br_blockcount = temp; |
| 1800 | PREV.br_startblock = nullstartblock(da_new); |
Christoph Hellwig | ec90c55 | 2011-05-23 08:52:53 +0000 | [diff] [blame] | 1801 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1802 | xfs_iext_update_extent(bma->ip, state, &bma->icur, &PREV); |
| 1803 | xfs_iext_next(ifp, &bma->icur); |
| 1804 | xfs_iext_update_extent(bma->ip, state, &bma->icur, &RIGHT); |
Christoph Hellwig | d69bee6 | 2024-04-29 08:15:27 +0200 | [diff] [blame] | 1805 | ASSERT(da_new <= da_old); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1806 | break; |
| 1807 | |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 1808 | case BMAP_RIGHT_FILLING: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1809 | /* |
| 1810 | * Filling in the last part of a previous delayed allocation. |
| 1811 | * The right neighbor is not contiguous. |
| 1812 | */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1813 | xfs_iext_update_extent(bma->ip, state, &bma->icur, new); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 1814 | ifp->if_nextents++; |
| 1815 | |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1816 | if (bma->cur == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1817 | rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; |
| 1818 | else { |
| 1819 | rval = XFS_ILOG_CORE; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 1820 | error = xfs_bmbt_lookup_eq(bma->cur, new, &i); |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1821 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1822 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1823 | if (XFS_IS_CORRUPT(mp, i != 0)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 1824 | xfs_btree_mark_sick(bma->cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1825 | error = -EFSCORRUPTED; |
| 1826 | goto done; |
| 1827 | } |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1828 | error = xfs_btree_insert(bma->cur, &i); |
| 1829 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1830 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1831 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 1832 | xfs_btree_mark_sick(bma->cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1833 | error = -EFSCORRUPTED; |
| 1834 | goto done; |
| 1835 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1836 | } |
Christoph Hellwig | 8096b1e | 2011-12-18 20:00:07 +0000 | [diff] [blame] | 1837 | |
Darrick J. Wong | 6d3eb1e | 2016-01-04 16:12:42 +1100 | [diff] [blame] | 1838 | if (xfs_bmap_needs_btree(bma->ip, whichfork)) { |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1839 | error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, |
Brian Foster | 280253d | 2018-07-11 22:26:29 -0700 | [diff] [blame] | 1840 | &bma->cur, 1, &tmp_rval, whichfork); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1841 | rval |= tmp_rval; |
| 1842 | if (error) |
| 1843 | goto done; |
| 1844 | } |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1845 | |
| 1846 | temp = PREV.br_blockcount - new->br_blockcount; |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1847 | da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp), |
Eric Sandeen | 9d87c31 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 1848 | startblockval(PREV.br_startblock) - |
Christoph Hellwig | 88ee2f4 | 2024-02-22 12:37:03 -0800 | [diff] [blame] | 1849 | (bma->cur ? bma->cur->bc_bmap.allocated : 0)); |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1850 | |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1851 | PREV.br_startblock = nullstartblock(da_new); |
| 1852 | PREV.br_blockcount = temp; |
Christoph Hellwig | 0254c2f | 2017-11-03 10:34:46 -0700 | [diff] [blame] | 1853 | xfs_iext_insert(bma->ip, &bma->icur, &PREV, state); |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1854 | xfs_iext_next(ifp, &bma->icur); |
Christoph Hellwig | d69bee6 | 2024-04-29 08:15:27 +0200 | [diff] [blame] | 1855 | ASSERT(da_new <= da_old); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1856 | break; |
| 1857 | |
| 1858 | case 0: |
| 1859 | /* |
| 1860 | * Filling in the middle part of a previous delayed allocation. |
| 1861 | * Contiguity is impossible here. |
| 1862 | * This case is avoided almost all the time. |
bpm@sgi.com | 24446fc | 2011-01-19 17:41:58 +0000 | [diff] [blame] | 1863 | * |
| 1864 | * We start with a delayed allocation: |
| 1865 | * |
| 1866 | * +ddddddddddddddddddddddddddddddddddddddddddddddddddddddd+ |
| 1867 | * PREV @ idx |
| 1868 | * |
| 1869 | * and we are allocating: |
| 1870 | * +rrrrrrrrrrrrrrrrr+ |
| 1871 | * new |
| 1872 | * |
| 1873 | * and we set it up for insertion as: |
| 1874 | * +ddddddddddddddddddd+rrrrrrrrrrrrrrrrr+ddddddddddddddddd+ |
| 1875 | * new |
| 1876 | * PREV @ idx LEFT RIGHT |
| 1877 | * inserted at idx + 1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1878 | */ |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1879 | old = PREV; |
| 1880 | |
| 1881 | /* LEFT is the new middle */ |
bpm@sgi.com | 24446fc | 2011-01-19 17:41:58 +0000 | [diff] [blame] | 1882 | LEFT = *new; |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1883 | |
| 1884 | /* RIGHT is the new right */ |
bpm@sgi.com | 24446fc | 2011-01-19 17:41:58 +0000 | [diff] [blame] | 1885 | RIGHT.br_state = PREV.br_state; |
bpm@sgi.com | 24446fc | 2011-01-19 17:41:58 +0000 | [diff] [blame] | 1886 | RIGHT.br_startoff = new_endoff; |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1887 | RIGHT.br_blockcount = |
| 1888 | PREV.br_startoff + PREV.br_blockcount - new_endoff; |
| 1889 | RIGHT.br_startblock = |
| 1890 | nullstartblock(xfs_bmap_worst_indlen(bma->ip, |
| 1891 | RIGHT.br_blockcount)); |
| 1892 | |
| 1893 | /* truncate PREV */ |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1894 | PREV.br_blockcount = new->br_startoff - PREV.br_startoff; |
| 1895 | PREV.br_startblock = |
| 1896 | nullstartblock(xfs_bmap_worst_indlen(bma->ip, |
| 1897 | PREV.br_blockcount)); |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1898 | xfs_iext_update_extent(bma->ip, state, &bma->icur, &PREV); |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1899 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 1900 | xfs_iext_next(ifp, &bma->icur); |
Christoph Hellwig | 0254c2f | 2017-11-03 10:34:46 -0700 | [diff] [blame] | 1901 | xfs_iext_insert(bma->ip, &bma->icur, &RIGHT, state); |
| 1902 | xfs_iext_insert(bma->ip, &bma->icur, &LEFT, state); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 1903 | ifp->if_nextents++; |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1904 | |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1905 | if (bma->cur == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1906 | rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; |
| 1907 | else { |
| 1908 | rval = XFS_ILOG_CORE; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 1909 | error = xfs_bmbt_lookup_eq(bma->cur, new, &i); |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1910 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1911 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1912 | if (XFS_IS_CORRUPT(mp, i != 0)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 1913 | xfs_btree_mark_sick(bma->cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1914 | error = -EFSCORRUPTED; |
| 1915 | goto done; |
| 1916 | } |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1917 | error = xfs_btree_insert(bma->cur, &i); |
| 1918 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1919 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1920 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 1921 | xfs_btree_mark_sick(bma->cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 1922 | error = -EFSCORRUPTED; |
| 1923 | goto done; |
| 1924 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1925 | } |
Christoph Hellwig | 8096b1e | 2011-12-18 20:00:07 +0000 | [diff] [blame] | 1926 | |
Darrick J. Wong | 6d3eb1e | 2016-01-04 16:12:42 +1100 | [diff] [blame] | 1927 | if (xfs_bmap_needs_btree(bma->ip, whichfork)) { |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1928 | error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, |
Brian Foster | 280253d | 2018-07-11 22:26:29 -0700 | [diff] [blame] | 1929 | &bma->cur, 1, &tmp_rval, whichfork); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1930 | rval |= tmp_rval; |
| 1931 | if (error) |
| 1932 | goto done; |
| 1933 | } |
Christoph Hellwig | 4dcb8869 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 1934 | |
| 1935 | da_new = startblockval(PREV.br_startblock) + |
| 1936 | startblockval(RIGHT.br_startblock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1937 | break; |
| 1938 | |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 1939 | case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: |
| 1940 | case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: |
| 1941 | case BMAP_LEFT_FILLING | BMAP_RIGHT_CONTIG: |
| 1942 | case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG: |
| 1943 | case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: |
| 1944 | case BMAP_LEFT_CONTIG: |
| 1945 | case BMAP_RIGHT_CONTIG: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1946 | /* |
| 1947 | * These cases are all impossible. |
| 1948 | */ |
| 1949 | ASSERT(0); |
| 1950 | } |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 1951 | |
Darrick J. Wong | 95eb308 | 2018-05-09 10:02:32 -0700 | [diff] [blame] | 1952 | /* add reverse mapping unless caller opted out */ |
Darrick J. Wong | bc46ac6 | 2019-08-26 17:06:03 -0700 | [diff] [blame] | 1953 | if (!(bma->flags & XFS_BMAPI_NORMAP)) |
| 1954 | xfs_rmap_map_extent(bma->tp, bma->ip, whichfork, new); |
Darrick J. Wong | 9c19464 | 2016-08-03 12:16:05 +1000 | [diff] [blame] | 1955 | |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 1956 | /* convert to a btree if necessary */ |
Darrick J. Wong | 6d3eb1e | 2016-01-04 16:12:42 +1100 | [diff] [blame] | 1957 | if (xfs_bmap_needs_btree(bma->ip, whichfork)) { |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 1958 | int tmp_logflags; /* partial log flag return val */ |
| 1959 | |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1960 | ASSERT(bma->cur == NULL); |
| 1961 | error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, |
Brian Foster | 280253d | 2018-07-11 22:26:29 -0700 | [diff] [blame] | 1962 | &bma->cur, da_old > 0, &tmp_logflags, |
| 1963 | whichfork); |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1964 | bma->logflags |= tmp_logflags; |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 1965 | if (error) |
| 1966 | goto done; |
| 1967 | } |
| 1968 | |
Darrick J. Wong | 9fe82b8 | 2019-04-25 18:26:22 -0700 | [diff] [blame] | 1969 | if (da_new != da_old) |
Christoph Hellwig | 7099bd0 | 2024-04-22 13:20:15 +0200 | [diff] [blame] | 1970 | xfs_mod_delalloc(bma->ip, 0, (int64_t)da_new - da_old); |
Darrick J. Wong | 9fe82b8 | 2019-04-25 18:26:22 -0700 | [diff] [blame] | 1971 | |
Christoph Hellwig | ca1862b | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 1972 | if (bma->cur) { |
Christoph Hellwig | 88ee2f4 | 2024-02-22 12:37:03 -0800 | [diff] [blame] | 1973 | da_new += bma->cur->bc_bmap.allocated; |
| 1974 | bma->cur->bc_bmap.allocated = 0; |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 1975 | } |
| 1976 | |
Christoph Hellwig | ca1862b | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 1977 | /* adjust for changes in reserved delayed indirect blocks */ |
Christoph Hellwig | d69bee6 | 2024-04-29 08:15:27 +0200 | [diff] [blame] | 1978 | if (da_new < da_old) |
Christoph Hellwig | f30f656 | 2024-04-22 13:20:12 +0200 | [diff] [blame] | 1979 | xfs_add_fdblocks(mp, da_old - da_new); |
Christoph Hellwig | d69bee6 | 2024-04-29 08:15:27 +0200 | [diff] [blame] | 1980 | else if (da_new > da_old) |
| 1981 | error = xfs_dec_fdblocks(mp, da_new - da_old, true); |
Christoph Hellwig | 572a4cf | 2011-09-18 20:41:04 +0000 | [diff] [blame] | 1982 | |
Darrick J. Wong | 6d3eb1e | 2016-01-04 16:12:42 +1100 | [diff] [blame] | 1983 | xfs_bmap_check_leaf_extents(bma->cur, bma->ip, whichfork); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1984 | done: |
Darrick J. Wong | 60b4984 | 2016-10-03 09:11:34 -0700 | [diff] [blame] | 1985 | if (whichfork != XFS_COW_FORK) |
| 1986 | bma->logflags |= rval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1987 | return error; |
| 1988 | #undef LEFT |
| 1989 | #undef RIGHT |
| 1990 | #undef PREV |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1991 | } |
| 1992 | |
| 1993 | /* |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 1994 | * Convert an unwritten allocation to a real allocation or vice versa. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1995 | */ |
Christoph Hellwig | 26b91c7 | 2019-02-18 09:38:48 -0800 | [diff] [blame] | 1996 | int /* error */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1997 | xfs_bmap_add_extent_unwritten_real( |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 1998 | struct xfs_trans *tp, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1999 | xfs_inode_t *ip, /* incore inode pointer */ |
Darrick J. Wong | 05a630d | 2017-02-02 15:14:01 -0800 | [diff] [blame] | 2000 | int whichfork, |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2001 | struct xfs_iext_cursor *icur, |
Darrick J. Wong | ae127f0 | 2021-09-16 12:18:47 -0700 | [diff] [blame] | 2002 | struct xfs_btree_cur **curp, /* if *curp is null, not a btree */ |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 2003 | xfs_bmbt_irec_t *new, /* new data to add to file extents */ |
Christoph Hellwig | b4e9181 | 2010-06-23 18:11:15 +1000 | [diff] [blame] | 2004 | int *logflagsp) /* inode logging flags */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2005 | { |
Darrick J. Wong | ae127f0 | 2021-09-16 12:18:47 -0700 | [diff] [blame] | 2006 | struct xfs_btree_cur *cur; /* btree cursor */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2007 | int error; /* error return value */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2008 | int i; /* temp state */ |
Christoph Hellwig | 3ba738d | 2018-07-17 16:51:50 -0700 | [diff] [blame] | 2009 | struct xfs_ifork *ifp; /* inode fork pointer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2010 | xfs_fileoff_t new_endoff; /* end offset of new entry */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2011 | xfs_bmbt_irec_t r[3]; /* neighbor extent entries */ |
| 2012 | /* left is 0, right is 1, prev is 2 */ |
| 2013 | int rval=0; /* return value (logging flags) */ |
Dave Chinner | 0e5b8e4 | 2022-04-21 10:46:01 +1000 | [diff] [blame] | 2014 | uint32_t state = xfs_bmap_fork_to_state(whichfork); |
Darrick J. Wong | 05a630d | 2017-02-02 15:14:01 -0800 | [diff] [blame] | 2015 | struct xfs_mount *mp = ip->i_mount; |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2016 | struct xfs_bmbt_irec old; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2017 | |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 2018 | *logflagsp = 0; |
| 2019 | |
| 2020 | cur = *curp; |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 2021 | ifp = xfs_ifork_ptr(ip, whichfork); |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 2022 | |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 2023 | ASSERT(!isnullstartblock(new->br_startblock)); |
| 2024 | |
Bill O'Donnell | ff6d6af | 2015-10-12 18:21:22 +1100 | [diff] [blame] | 2025 | XFS_STATS_INC(mp, xs_add_exlist); |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 2026 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2027 | #define LEFT r[0] |
| 2028 | #define RIGHT r[1] |
| 2029 | #define PREV r[2] |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 2030 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2031 | /* |
| 2032 | * Set up a bunch of variables to make the tests simpler. |
| 2033 | */ |
| 2034 | error = 0; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2035 | xfs_iext_get_extent(ifp, icur, &PREV); |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2036 | ASSERT(new->br_state != PREV.br_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2037 | new_endoff = new->br_startoff + new->br_blockcount; |
| 2038 | ASSERT(PREV.br_startoff <= new->br_startoff); |
| 2039 | ASSERT(PREV.br_startoff + PREV.br_blockcount >= new_endoff); |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2040 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2041 | /* |
| 2042 | * Set flags determining what part of the previous oldext allocation |
| 2043 | * extent is being replaced by a newext allocation. |
| 2044 | */ |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2045 | if (PREV.br_startoff == new->br_startoff) |
| 2046 | state |= BMAP_LEFT_FILLING; |
| 2047 | if (PREV.br_startoff + PREV.br_blockcount == new_endoff) |
| 2048 | state |= BMAP_RIGHT_FILLING; |
| 2049 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2050 | /* |
| 2051 | * Check and set flags if this segment has a left neighbor. |
| 2052 | * Don't set contiguous if the combined extent would be too large. |
| 2053 | */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2054 | if (xfs_iext_peek_prev_extent(ifp, icur, &LEFT)) { |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2055 | state |= BMAP_LEFT_VALID; |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2056 | if (isnullstartblock(LEFT.br_startblock)) |
| 2057 | state |= BMAP_LEFT_DELAY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2058 | } |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2059 | |
| 2060 | if ((state & BMAP_LEFT_VALID) && !(state & BMAP_LEFT_DELAY) && |
| 2061 | LEFT.br_startoff + LEFT.br_blockcount == new->br_startoff && |
| 2062 | LEFT.br_startblock + LEFT.br_blockcount == new->br_startblock && |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2063 | LEFT.br_state == new->br_state && |
Chandan Babu R | 95f0b95 | 2021-08-09 12:05:22 +0530 | [diff] [blame] | 2064 | LEFT.br_blockcount + new->br_blockcount <= XFS_MAX_BMBT_EXTLEN) |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2065 | state |= BMAP_LEFT_CONTIG; |
| 2066 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2067 | /* |
| 2068 | * Check and set flags if this segment has a right neighbor. |
| 2069 | * Don't set contiguous if the combined extent would be too large. |
| 2070 | * Also check for all-three-contiguous being too large. |
| 2071 | */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2072 | if (xfs_iext_peek_next_extent(ifp, icur, &RIGHT)) { |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2073 | state |= BMAP_RIGHT_VALID; |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2074 | if (isnullstartblock(RIGHT.br_startblock)) |
| 2075 | state |= BMAP_RIGHT_DELAY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2076 | } |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2077 | |
| 2078 | if ((state & BMAP_RIGHT_VALID) && !(state & BMAP_RIGHT_DELAY) && |
| 2079 | new_endoff == RIGHT.br_startoff && |
| 2080 | new->br_startblock + new->br_blockcount == RIGHT.br_startblock && |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2081 | new->br_state == RIGHT.br_state && |
Chandan Babu R | 95f0b95 | 2021-08-09 12:05:22 +0530 | [diff] [blame] | 2082 | new->br_blockcount + RIGHT.br_blockcount <= XFS_MAX_BMBT_EXTLEN && |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2083 | ((state & (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | |
| 2084 | BMAP_RIGHT_FILLING)) != |
| 2085 | (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | |
| 2086 | BMAP_RIGHT_FILLING) || |
| 2087 | LEFT.br_blockcount + new->br_blockcount + RIGHT.br_blockcount |
Chandan Babu R | 95f0b95 | 2021-08-09 12:05:22 +0530 | [diff] [blame] | 2088 | <= XFS_MAX_BMBT_EXTLEN)) |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2089 | state |= BMAP_RIGHT_CONTIG; |
| 2090 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2091 | /* |
| 2092 | * Switch out based on the FILLING and CONTIG state bits. |
| 2093 | */ |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2094 | switch (state & (BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | |
| 2095 | BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG)) { |
| 2096 | case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | |
| 2097 | BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2098 | /* |
| 2099 | * Setting all of a previous oldext extent to newext. |
| 2100 | * The left and right neighbors are both contiguous with new. |
| 2101 | */ |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2102 | LEFT.br_blockcount += PREV.br_blockcount + RIGHT.br_blockcount; |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 2103 | |
Christoph Hellwig | c38ccf5 | 2017-11-03 10:34:47 -0700 | [diff] [blame] | 2104 | xfs_iext_remove(ip, icur, state); |
| 2105 | xfs_iext_remove(ip, icur, state); |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2106 | xfs_iext_prev(ifp, icur); |
| 2107 | xfs_iext_update_extent(ip, state, icur, &LEFT); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 2108 | ifp->if_nextents -= 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2109 | if (cur == NULL) |
| 2110 | rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; |
| 2111 | else { |
| 2112 | rval = XFS_ILOG_CORE; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2113 | error = xfs_bmbt_lookup_eq(cur, &RIGHT, &i); |
| 2114 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2115 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2116 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2117 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2118 | error = -EFSCORRUPTED; |
| 2119 | goto done; |
| 2120 | } |
Christoph Hellwig | 91cca5df | 2008-10-30 16:58:01 +1100 | [diff] [blame] | 2121 | if ((error = xfs_btree_delete(cur, &i))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2122 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2123 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2124 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2125 | error = -EFSCORRUPTED; |
| 2126 | goto done; |
| 2127 | } |
Christoph Hellwig | 8df4da4 | 2008-10-30 16:55:58 +1100 | [diff] [blame] | 2128 | if ((error = xfs_btree_decrement(cur, 0, &i))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2129 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2130 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2131 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2132 | error = -EFSCORRUPTED; |
| 2133 | goto done; |
| 2134 | } |
Christoph Hellwig | 91cca5df | 2008-10-30 16:58:01 +1100 | [diff] [blame] | 2135 | if ((error = xfs_btree_delete(cur, &i))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2136 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2137 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2138 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2139 | error = -EFSCORRUPTED; |
| 2140 | goto done; |
| 2141 | } |
Christoph Hellwig | 8df4da4 | 2008-10-30 16:55:58 +1100 | [diff] [blame] | 2142 | if ((error = xfs_btree_decrement(cur, 0, &i))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2143 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2144 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2145 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2146 | error = -EFSCORRUPTED; |
| 2147 | goto done; |
| 2148 | } |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2149 | error = xfs_bmbt_update(cur, &LEFT); |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2150 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2151 | goto done; |
| 2152 | } |
| 2153 | break; |
| 2154 | |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2155 | case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2156 | /* |
| 2157 | * Setting all of a previous oldext extent to newext. |
| 2158 | * The left neighbor is contiguous, the right is not. |
| 2159 | */ |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2160 | LEFT.br_blockcount += PREV.br_blockcount; |
Christoph Hellwig | ec90c55 | 2011-05-23 08:52:53 +0000 | [diff] [blame] | 2161 | |
Christoph Hellwig | c38ccf5 | 2017-11-03 10:34:47 -0700 | [diff] [blame] | 2162 | xfs_iext_remove(ip, icur, state); |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2163 | xfs_iext_prev(ifp, icur); |
| 2164 | xfs_iext_update_extent(ip, state, icur, &LEFT); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 2165 | ifp->if_nextents--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2166 | if (cur == NULL) |
| 2167 | rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; |
| 2168 | else { |
| 2169 | rval = XFS_ILOG_CORE; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2170 | error = xfs_bmbt_lookup_eq(cur, &PREV, &i); |
| 2171 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2172 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2173 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2174 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2175 | error = -EFSCORRUPTED; |
| 2176 | goto done; |
| 2177 | } |
Christoph Hellwig | 91cca5df | 2008-10-30 16:58:01 +1100 | [diff] [blame] | 2178 | if ((error = xfs_btree_delete(cur, &i))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2179 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2180 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2181 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2182 | error = -EFSCORRUPTED; |
| 2183 | goto done; |
| 2184 | } |
Christoph Hellwig | 8df4da4 | 2008-10-30 16:55:58 +1100 | [diff] [blame] | 2185 | if ((error = xfs_btree_decrement(cur, 0, &i))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2186 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2187 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2188 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2189 | error = -EFSCORRUPTED; |
| 2190 | goto done; |
| 2191 | } |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2192 | error = xfs_bmbt_update(cur, &LEFT); |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2193 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2194 | goto done; |
| 2195 | } |
| 2196 | break; |
| 2197 | |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2198 | case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2199 | /* |
| 2200 | * Setting all of a previous oldext extent to newext. |
| 2201 | * The right neighbor is contiguous, the left is not. |
| 2202 | */ |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2203 | PREV.br_blockcount += RIGHT.br_blockcount; |
| 2204 | PREV.br_state = new->br_state; |
Christoph Hellwig | a681847 | 2017-11-03 10:34:40 -0700 | [diff] [blame] | 2205 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2206 | xfs_iext_next(ifp, icur); |
Christoph Hellwig | c38ccf5 | 2017-11-03 10:34:47 -0700 | [diff] [blame] | 2207 | xfs_iext_remove(ip, icur, state); |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2208 | xfs_iext_prev(ifp, icur); |
| 2209 | xfs_iext_update_extent(ip, state, icur, &PREV); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 2210 | ifp->if_nextents--; |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2211 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2212 | if (cur == NULL) |
| 2213 | rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; |
| 2214 | else { |
| 2215 | rval = XFS_ILOG_CORE; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2216 | error = xfs_bmbt_lookup_eq(cur, &RIGHT, &i); |
| 2217 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2218 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2219 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2220 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2221 | error = -EFSCORRUPTED; |
| 2222 | goto done; |
| 2223 | } |
Christoph Hellwig | 91cca5df | 2008-10-30 16:58:01 +1100 | [diff] [blame] | 2224 | if ((error = xfs_btree_delete(cur, &i))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2225 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2226 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2227 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2228 | error = -EFSCORRUPTED; |
| 2229 | goto done; |
| 2230 | } |
Christoph Hellwig | 8df4da4 | 2008-10-30 16:55:58 +1100 | [diff] [blame] | 2231 | if ((error = xfs_btree_decrement(cur, 0, &i))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2232 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2233 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2234 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2235 | error = -EFSCORRUPTED; |
| 2236 | goto done; |
| 2237 | } |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2238 | error = xfs_bmbt_update(cur, &PREV); |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2239 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2240 | goto done; |
| 2241 | } |
| 2242 | break; |
| 2243 | |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2244 | case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2245 | /* |
| 2246 | * Setting all of a previous oldext extent to newext. |
| 2247 | * Neither the left nor right neighbors are contiguous with |
| 2248 | * the new one. |
| 2249 | */ |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2250 | PREV.br_state = new->br_state; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2251 | xfs_iext_update_extent(ip, state, icur, &PREV); |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 2252 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2253 | if (cur == NULL) |
| 2254 | rval = XFS_ILOG_DEXT; |
| 2255 | else { |
| 2256 | rval = 0; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2257 | error = xfs_bmbt_lookup_eq(cur, new, &i); |
| 2258 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2259 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2260 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2261 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2262 | error = -EFSCORRUPTED; |
| 2263 | goto done; |
| 2264 | } |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2265 | error = xfs_bmbt_update(cur, &PREV); |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2266 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2267 | goto done; |
| 2268 | } |
| 2269 | break; |
| 2270 | |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2271 | case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2272 | /* |
| 2273 | * Setting the first part of a previous oldext extent to newext. |
| 2274 | * The left neighbor is contiguous. |
| 2275 | */ |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2276 | LEFT.br_blockcount += new->br_blockcount; |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 2277 | |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2278 | old = PREV; |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2279 | PREV.br_startoff += new->br_blockcount; |
| 2280 | PREV.br_startblock += new->br_blockcount; |
| 2281 | PREV.br_blockcount -= new->br_blockcount; |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 2282 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2283 | xfs_iext_update_extent(ip, state, icur, &PREV); |
| 2284 | xfs_iext_prev(ifp, icur); |
| 2285 | xfs_iext_update_extent(ip, state, icur, &LEFT); |
Christoph Hellwig | ec90c55 | 2011-05-23 08:52:53 +0000 | [diff] [blame] | 2286 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2287 | if (cur == NULL) |
| 2288 | rval = XFS_ILOG_DEXT; |
| 2289 | else { |
| 2290 | rval = 0; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2291 | error = xfs_bmbt_lookup_eq(cur, &old, &i); |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2292 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2293 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2294 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2295 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2296 | error = -EFSCORRUPTED; |
| 2297 | goto done; |
| 2298 | } |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2299 | error = xfs_bmbt_update(cur, &PREV); |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2300 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2301 | goto done; |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2302 | error = xfs_btree_decrement(cur, 0, &i); |
| 2303 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2304 | goto done; |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2305 | error = xfs_bmbt_update(cur, &LEFT); |
Christoph Hellwig | b0eab14 | 2011-09-18 20:41:06 +0000 | [diff] [blame] | 2306 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2307 | goto done; |
| 2308 | } |
| 2309 | break; |
| 2310 | |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2311 | case BMAP_LEFT_FILLING: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2312 | /* |
| 2313 | * Setting the first part of a previous oldext extent to newext. |
| 2314 | * The left neighbor is not contiguous. |
| 2315 | */ |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2316 | old = PREV; |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2317 | PREV.br_startoff += new->br_blockcount; |
| 2318 | PREV.br_startblock += new->br_blockcount; |
| 2319 | PREV.br_blockcount -= new->br_blockcount; |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 2320 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2321 | xfs_iext_update_extent(ip, state, icur, &PREV); |
Christoph Hellwig | 0254c2f | 2017-11-03 10:34:46 -0700 | [diff] [blame] | 2322 | xfs_iext_insert(ip, icur, new, state); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 2323 | ifp->if_nextents++; |
| 2324 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2325 | if (cur == NULL) |
| 2326 | rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; |
| 2327 | else { |
| 2328 | rval = XFS_ILOG_CORE; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2329 | error = xfs_bmbt_lookup_eq(cur, &old, &i); |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2330 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2331 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2332 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2333 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2334 | error = -EFSCORRUPTED; |
| 2335 | goto done; |
| 2336 | } |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2337 | error = xfs_bmbt_update(cur, &PREV); |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2338 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2339 | goto done; |
| 2340 | cur->bc_rec.b = *new; |
Christoph Hellwig | 4b22a57 | 2008-10-30 16:57:40 +1100 | [diff] [blame] | 2341 | if ((error = xfs_btree_insert(cur, &i))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2342 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2343 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2344 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2345 | error = -EFSCORRUPTED; |
| 2346 | goto done; |
| 2347 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2348 | } |
| 2349 | break; |
| 2350 | |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2351 | case BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2352 | /* |
| 2353 | * Setting the last part of a previous oldext extent to newext. |
| 2354 | * The right neighbor is contiguous with the new allocation. |
| 2355 | */ |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2356 | old = PREV; |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2357 | PREV.br_blockcount -= new->br_blockcount; |
Christoph Hellwig | ec90c55 | 2011-05-23 08:52:53 +0000 | [diff] [blame] | 2358 | |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2359 | RIGHT.br_startoff = new->br_startoff; |
| 2360 | RIGHT.br_startblock = new->br_startblock; |
| 2361 | RIGHT.br_blockcount += new->br_blockcount; |
Christoph Hellwig | a681847 | 2017-11-03 10:34:40 -0700 | [diff] [blame] | 2362 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2363 | xfs_iext_update_extent(ip, state, icur, &PREV); |
| 2364 | xfs_iext_next(ifp, icur); |
| 2365 | xfs_iext_update_extent(ip, state, icur, &RIGHT); |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 2366 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2367 | if (cur == NULL) |
| 2368 | rval = XFS_ILOG_DEXT; |
| 2369 | else { |
| 2370 | rval = 0; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2371 | error = xfs_bmbt_lookup_eq(cur, &old, &i); |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2372 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2373 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2374 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2375 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2376 | error = -EFSCORRUPTED; |
| 2377 | goto done; |
| 2378 | } |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2379 | error = xfs_bmbt_update(cur, &PREV); |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2380 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2381 | goto done; |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2382 | error = xfs_btree_increment(cur, 0, &i); |
| 2383 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2384 | goto done; |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2385 | error = xfs_bmbt_update(cur, &RIGHT); |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2386 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2387 | goto done; |
| 2388 | } |
| 2389 | break; |
| 2390 | |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2391 | case BMAP_RIGHT_FILLING: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2392 | /* |
| 2393 | * Setting the last part of a previous oldext extent to newext. |
| 2394 | * The right neighbor is not contiguous. |
| 2395 | */ |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2396 | old = PREV; |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2397 | PREV.br_blockcount -= new->br_blockcount; |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 2398 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2399 | xfs_iext_update_extent(ip, state, icur, &PREV); |
| 2400 | xfs_iext_next(ifp, icur); |
Christoph Hellwig | 0254c2f | 2017-11-03 10:34:46 -0700 | [diff] [blame] | 2401 | xfs_iext_insert(ip, icur, new, state); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 2402 | ifp->if_nextents++; |
Christoph Hellwig | ec90c55 | 2011-05-23 08:52:53 +0000 | [diff] [blame] | 2403 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2404 | if (cur == NULL) |
| 2405 | rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; |
| 2406 | else { |
| 2407 | rval = XFS_ILOG_CORE; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2408 | error = xfs_bmbt_lookup_eq(cur, &old, &i); |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2409 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2410 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2411 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2412 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2413 | error = -EFSCORRUPTED; |
| 2414 | goto done; |
| 2415 | } |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2416 | error = xfs_bmbt_update(cur, &PREV); |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2417 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2418 | goto done; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2419 | error = xfs_bmbt_lookup_eq(cur, new, &i); |
| 2420 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2421 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2422 | if (XFS_IS_CORRUPT(mp, i != 0)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2423 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2424 | error = -EFSCORRUPTED; |
| 2425 | goto done; |
| 2426 | } |
Christoph Hellwig | 4b22a57 | 2008-10-30 16:57:40 +1100 | [diff] [blame] | 2427 | if ((error = xfs_btree_insert(cur, &i))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2428 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2429 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2430 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2431 | error = -EFSCORRUPTED; |
| 2432 | goto done; |
| 2433 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2434 | } |
| 2435 | break; |
| 2436 | |
| 2437 | case 0: |
| 2438 | /* |
| 2439 | * Setting the middle part of a previous oldext extent to |
| 2440 | * newext. Contiguity is impossible here. |
| 2441 | * One extent becomes three extents. |
| 2442 | */ |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2443 | old = PREV; |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2444 | PREV.br_blockcount = new->br_startoff - PREV.br_startoff; |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 2445 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2446 | r[0] = *new; |
| 2447 | r[1].br_startoff = new_endoff; |
| 2448 | r[1].br_blockcount = |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2449 | old.br_startoff + old.br_blockcount - new_endoff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2450 | r[1].br_startblock = new->br_startblock + new->br_blockcount; |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2451 | r[1].br_state = PREV.br_state; |
Christoph Hellwig | ec90c55 | 2011-05-23 08:52:53 +0000 | [diff] [blame] | 2452 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2453 | xfs_iext_update_extent(ip, state, icur, &PREV); |
| 2454 | xfs_iext_next(ifp, icur); |
Christoph Hellwig | 0254c2f | 2017-11-03 10:34:46 -0700 | [diff] [blame] | 2455 | xfs_iext_insert(ip, icur, &r[1], state); |
| 2456 | xfs_iext_insert(ip, icur, &r[0], state); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 2457 | ifp->if_nextents += 2; |
Christoph Hellwig | ec90c55 | 2011-05-23 08:52:53 +0000 | [diff] [blame] | 2458 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2459 | if (cur == NULL) |
| 2460 | rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; |
| 2461 | else { |
| 2462 | rval = XFS_ILOG_CORE; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2463 | error = xfs_bmbt_lookup_eq(cur, &old, &i); |
Christoph Hellwig | 79fa614 | 2017-10-17 14:16:25 -0700 | [diff] [blame] | 2464 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2465 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2466 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2467 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2468 | error = -EFSCORRUPTED; |
| 2469 | goto done; |
| 2470 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2471 | /* new right extent - oldext */ |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2472 | error = xfs_bmbt_update(cur, &r[1]); |
| 2473 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2474 | goto done; |
| 2475 | /* new left extent - oldext */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2476 | cur->bc_rec.b = PREV; |
Christoph Hellwig | 4b22a57 | 2008-10-30 16:57:40 +1100 | [diff] [blame] | 2477 | if ((error = xfs_btree_insert(cur, &i))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2478 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2479 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2480 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2481 | error = -EFSCORRUPTED; |
| 2482 | goto done; |
| 2483 | } |
Lachlan McIlroy | ddea2d5 | 2008-06-23 13:25:53 +1000 | [diff] [blame] | 2484 | /* |
| 2485 | * Reset the cursor to the position of the new extent |
| 2486 | * we are about to insert as we can't trust it after |
| 2487 | * the previous insert. |
| 2488 | */ |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2489 | error = xfs_bmbt_lookup_eq(cur, new, &i); |
| 2490 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2491 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2492 | if (XFS_IS_CORRUPT(mp, i != 0)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2493 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2494 | error = -EFSCORRUPTED; |
| 2495 | goto done; |
| 2496 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2497 | /* new middle extent - newext */ |
Christoph Hellwig | 4b22a57 | 2008-10-30 16:57:40 +1100 | [diff] [blame] | 2498 | if ((error = xfs_btree_insert(cur, &i))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2499 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2500 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2501 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2502 | error = -EFSCORRUPTED; |
| 2503 | goto done; |
| 2504 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2505 | } |
| 2506 | break; |
| 2507 | |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2508 | case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: |
| 2509 | case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: |
| 2510 | case BMAP_LEFT_FILLING | BMAP_RIGHT_CONTIG: |
| 2511 | case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG: |
| 2512 | case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: |
| 2513 | case BMAP_LEFT_CONTIG: |
| 2514 | case BMAP_RIGHT_CONTIG: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2515 | /* |
| 2516 | * These cases are all impossible. |
| 2517 | */ |
| 2518 | ASSERT(0); |
| 2519 | } |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 2520 | |
Darrick J. Wong | 9c19464 | 2016-08-03 12:16:05 +1000 | [diff] [blame] | 2521 | /* update reverse mappings */ |
Darrick J. Wong | bc46ac6 | 2019-08-26 17:06:03 -0700 | [diff] [blame] | 2522 | xfs_rmap_convert_extent(mp, tp, ip, whichfork, new); |
Darrick J. Wong | 9c19464 | 2016-08-03 12:16:05 +1000 | [diff] [blame] | 2523 | |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 2524 | /* convert to a btree if necessary */ |
Darrick J. Wong | 05a630d | 2017-02-02 15:14:01 -0800 | [diff] [blame] | 2525 | if (xfs_bmap_needs_btree(ip, whichfork)) { |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 2526 | int tmp_logflags; /* partial log flag return val */ |
| 2527 | |
| 2528 | ASSERT(cur == NULL); |
Brian Foster | 280253d | 2018-07-11 22:26:29 -0700 | [diff] [blame] | 2529 | error = xfs_bmap_extents_to_btree(tp, ip, &cur, 0, |
| 2530 | &tmp_logflags, whichfork); |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 2531 | *logflagsp |= tmp_logflags; |
| 2532 | if (error) |
| 2533 | goto done; |
| 2534 | } |
| 2535 | |
| 2536 | /* clear out the allocated field, done with it now in any case. */ |
| 2537 | if (cur) { |
Christoph Hellwig | 88ee2f4 | 2024-02-22 12:37:03 -0800 | [diff] [blame] | 2538 | cur->bc_bmap.allocated = 0; |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 2539 | *curp = cur; |
| 2540 | } |
| 2541 | |
Darrick J. Wong | 05a630d | 2017-02-02 15:14:01 -0800 | [diff] [blame] | 2542 | xfs_bmap_check_leaf_extents(*curp, ip, whichfork); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2543 | done: |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 2544 | *logflagsp |= rval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2545 | return error; |
| 2546 | #undef LEFT |
| 2547 | #undef RIGHT |
| 2548 | #undef PREV |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2549 | } |
| 2550 | |
| 2551 | /* |
Christoph Hellwig | 1fd044d | 2011-09-18 20:40:49 +0000 | [diff] [blame] | 2552 | * Convert a hole to a delayed allocation. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2553 | */ |
Christoph Hellwig | 1fd044d | 2011-09-18 20:40:49 +0000 | [diff] [blame] | 2554 | STATIC void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2555 | xfs_bmap_add_extent_hole_delay( |
| 2556 | xfs_inode_t *ip, /* incore inode pointer */ |
Darrick J. Wong | be51f81 | 2016-10-03 09:11:32 -0700 | [diff] [blame] | 2557 | int whichfork, |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2558 | struct xfs_iext_cursor *icur, |
Christoph Hellwig | 1fd044d | 2011-09-18 20:40:49 +0000 | [diff] [blame] | 2559 | xfs_bmbt_irec_t *new) /* new data to add to file extents */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2560 | { |
Christoph Hellwig | 3ba738d | 2018-07-17 16:51:50 -0700 | [diff] [blame] | 2561 | struct xfs_ifork *ifp; /* inode fork pointer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2562 | xfs_bmbt_irec_t left; /* left neighbor extent entry */ |
| 2563 | xfs_filblks_t newlen=0; /* new indirect size */ |
| 2564 | xfs_filblks_t oldlen=0; /* old indirect size */ |
| 2565 | xfs_bmbt_irec_t right; /* right neighbor extent entry */ |
Dave Chinner | 0e5b8e4 | 2022-04-21 10:46:01 +1000 | [diff] [blame] | 2566 | uint32_t state = xfs_bmap_fork_to_state(whichfork); |
Christoph Hellwig | 3ffc18e | 2017-10-17 14:16:23 -0700 | [diff] [blame] | 2567 | xfs_filblks_t temp; /* temp for indirect calculations */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2568 | |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 2569 | ifp = xfs_ifork_ptr(ip, whichfork); |
Eric Sandeen | 9d87c31 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 2570 | ASSERT(isnullstartblock(new->br_startblock)); |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2571 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2572 | /* |
| 2573 | * Check and set flags if this segment has a left neighbor |
| 2574 | */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2575 | if (xfs_iext_peek_prev_extent(ifp, icur, &left)) { |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2576 | state |= BMAP_LEFT_VALID; |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2577 | if (isnullstartblock(left.br_startblock)) |
| 2578 | state |= BMAP_LEFT_DELAY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2579 | } |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2580 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2581 | /* |
| 2582 | * Check and set flags if the current (right) segment exists. |
| 2583 | * If it doesn't exist, we're converting the hole at end-of-file. |
| 2584 | */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2585 | if (xfs_iext_get_extent(ifp, icur, &right)) { |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2586 | state |= BMAP_RIGHT_VALID; |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2587 | if (isnullstartblock(right.br_startblock)) |
| 2588 | state |= BMAP_RIGHT_DELAY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2589 | } |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2590 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2591 | /* |
| 2592 | * Set contiguity flags on the left and right neighbors. |
| 2593 | * Don't let extents get too large, even if the pieces are contiguous. |
| 2594 | */ |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2595 | if ((state & BMAP_LEFT_VALID) && (state & BMAP_LEFT_DELAY) && |
| 2596 | left.br_startoff + left.br_blockcount == new->br_startoff && |
Chandan Babu R | 95f0b95 | 2021-08-09 12:05:22 +0530 | [diff] [blame] | 2597 | left.br_blockcount + new->br_blockcount <= XFS_MAX_BMBT_EXTLEN) |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2598 | state |= BMAP_LEFT_CONTIG; |
| 2599 | |
| 2600 | if ((state & BMAP_RIGHT_VALID) && (state & BMAP_RIGHT_DELAY) && |
| 2601 | new->br_startoff + new->br_blockcount == right.br_startoff && |
Chandan Babu R | 95f0b95 | 2021-08-09 12:05:22 +0530 | [diff] [blame] | 2602 | new->br_blockcount + right.br_blockcount <= XFS_MAX_BMBT_EXTLEN && |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2603 | (!(state & BMAP_LEFT_CONTIG) || |
| 2604 | (left.br_blockcount + new->br_blockcount + |
Chandan Babu R | 95f0b95 | 2021-08-09 12:05:22 +0530 | [diff] [blame] | 2605 | right.br_blockcount <= XFS_MAX_BMBT_EXTLEN))) |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2606 | state |= BMAP_RIGHT_CONTIG; |
| 2607 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2608 | /* |
| 2609 | * Switch out based on the contiguity flags. |
| 2610 | */ |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2611 | switch (state & (BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG)) { |
| 2612 | case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2613 | /* |
| 2614 | * New allocation is contiguous with delayed allocations |
| 2615 | * on the left and on the right. |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 2616 | * Merge all three into a single extent record. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2617 | */ |
| 2618 | temp = left.br_blockcount + new->br_blockcount + |
| 2619 | right.br_blockcount; |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 2620 | |
Eric Sandeen | 9d87c31 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 2621 | oldlen = startblockval(left.br_startblock) + |
| 2622 | startblockval(new->br_startblock) + |
| 2623 | startblockval(right.br_startblock); |
Brian Foster | 0e339ef | 2017-02-13 22:48:18 -0800 | [diff] [blame] | 2624 | newlen = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), |
| 2625 | oldlen); |
Christoph Hellwig | 3ffc18e | 2017-10-17 14:16:23 -0700 | [diff] [blame] | 2626 | left.br_startblock = nullstartblock(newlen); |
| 2627 | left.br_blockcount = temp; |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 2628 | |
Christoph Hellwig | c38ccf5 | 2017-11-03 10:34:47 -0700 | [diff] [blame] | 2629 | xfs_iext_remove(ip, icur, state); |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2630 | xfs_iext_prev(ifp, icur); |
| 2631 | xfs_iext_update_extent(ip, state, icur, &left); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2632 | break; |
| 2633 | |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2634 | case BMAP_LEFT_CONTIG: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2635 | /* |
| 2636 | * New allocation is contiguous with a delayed allocation |
| 2637 | * on the left. |
| 2638 | * Merge the new allocation with the left neighbor. |
| 2639 | */ |
| 2640 | temp = left.br_blockcount + new->br_blockcount; |
Christoph Hellwig | ec90c55 | 2011-05-23 08:52:53 +0000 | [diff] [blame] | 2641 | |
Eric Sandeen | 9d87c31 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 2642 | oldlen = startblockval(left.br_startblock) + |
| 2643 | startblockval(new->br_startblock); |
Brian Foster | 0e339ef | 2017-02-13 22:48:18 -0800 | [diff] [blame] | 2644 | newlen = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), |
| 2645 | oldlen); |
Christoph Hellwig | 3ffc18e | 2017-10-17 14:16:23 -0700 | [diff] [blame] | 2646 | left.br_blockcount = temp; |
| 2647 | left.br_startblock = nullstartblock(newlen); |
Christoph Hellwig | 41d196f | 2017-11-03 10:34:39 -0700 | [diff] [blame] | 2648 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2649 | xfs_iext_prev(ifp, icur); |
| 2650 | xfs_iext_update_extent(ip, state, icur, &left); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2651 | break; |
| 2652 | |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2653 | case BMAP_RIGHT_CONTIG: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2654 | /* |
| 2655 | * New allocation is contiguous with a delayed allocation |
| 2656 | * on the right. |
| 2657 | * Merge the new allocation with the right neighbor. |
| 2658 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2659 | temp = new->br_blockcount + right.br_blockcount; |
Eric Sandeen | 9d87c31 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 2660 | oldlen = startblockval(new->br_startblock) + |
| 2661 | startblockval(right.br_startblock); |
Brian Foster | 0e339ef | 2017-02-13 22:48:18 -0800 | [diff] [blame] | 2662 | newlen = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), |
| 2663 | oldlen); |
Christoph Hellwig | 3ffc18e | 2017-10-17 14:16:23 -0700 | [diff] [blame] | 2664 | right.br_startoff = new->br_startoff; |
| 2665 | right.br_startblock = nullstartblock(newlen); |
| 2666 | right.br_blockcount = temp; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2667 | xfs_iext_update_extent(ip, state, icur, &right); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2668 | break; |
| 2669 | |
| 2670 | case 0: |
| 2671 | /* |
| 2672 | * New allocation is not contiguous with another |
| 2673 | * delayed allocation. |
| 2674 | * Insert a new entry. |
| 2675 | */ |
| 2676 | oldlen = newlen = 0; |
Christoph Hellwig | 0254c2f | 2017-11-03 10:34:46 -0700 | [diff] [blame] | 2677 | xfs_iext_insert(ip, icur, new, state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2678 | break; |
| 2679 | } |
| 2680 | if (oldlen != newlen) { |
| 2681 | ASSERT(oldlen > newlen); |
Christoph Hellwig | f30f656 | 2024-04-22 13:20:12 +0200 | [diff] [blame] | 2682 | xfs_add_fdblocks(ip->i_mount, oldlen - newlen); |
| 2683 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2684 | /* |
| 2685 | * Nothing to do for disk quota accounting here. |
| 2686 | */ |
Christoph Hellwig | 7099bd0 | 2024-04-22 13:20:15 +0200 | [diff] [blame] | 2687 | xfs_mod_delalloc(ip, 0, (int64_t)newlen - oldlen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2688 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2689 | } |
| 2690 | |
| 2691 | /* |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 2692 | * Convert a hole to a real allocation. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2693 | */ |
| 2694 | STATIC int /* error */ |
| 2695 | xfs_bmap_add_extent_hole_real( |
Christoph Hellwig | 6d04558 | 2017-04-11 16:45:54 -0700 | [diff] [blame] | 2696 | struct xfs_trans *tp, |
| 2697 | struct xfs_inode *ip, |
| 2698 | int whichfork, |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2699 | struct xfs_iext_cursor *icur, |
Christoph Hellwig | 6d04558 | 2017-04-11 16:45:54 -0700 | [diff] [blame] | 2700 | struct xfs_btree_cur **curp, |
| 2701 | struct xfs_bmbt_irec *new, |
Darrick J. Wong | 95eb308 | 2018-05-09 10:02:32 -0700 | [diff] [blame] | 2702 | int *logflagsp, |
Dave Chinner | e7d410a | 2022-04-21 10:46:09 +1000 | [diff] [blame] | 2703 | uint32_t flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2704 | { |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 2705 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Christoph Hellwig | 6d04558 | 2017-04-11 16:45:54 -0700 | [diff] [blame] | 2706 | struct xfs_mount *mp = ip->i_mount; |
| 2707 | struct xfs_btree_cur *cur = *curp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2708 | int error; /* error return value */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2709 | int i; /* temp state */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2710 | xfs_bmbt_irec_t left; /* left neighbor extent entry */ |
| 2711 | xfs_bmbt_irec_t right; /* right neighbor extent entry */ |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2712 | int rval=0; /* return value (logging flags) */ |
Dave Chinner | 0e5b8e4 | 2022-04-21 10:46:01 +1000 | [diff] [blame] | 2713 | uint32_t state = xfs_bmap_fork_to_state(whichfork); |
Christoph Hellwig | 1abb9e5 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 2714 | struct xfs_bmbt_irec old; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2715 | |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 2716 | ASSERT(!isnullstartblock(new->br_startblock)); |
Christoph Hellwig | e9e66df | 2024-02-22 12:35:13 -0800 | [diff] [blame] | 2717 | ASSERT(!cur || !(cur->bc_flags & XFS_BTREE_BMBT_WASDEL)); |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 2718 | |
Bill O'Donnell | ff6d6af | 2015-10-12 18:21:22 +1100 | [diff] [blame] | 2719 | XFS_STATS_INC(mp, xs_add_exlist); |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 2720 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2721 | /* |
| 2722 | * Check and set flags if this segment has a left neighbor. |
| 2723 | */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2724 | if (xfs_iext_peek_prev_extent(ifp, icur, &left)) { |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2725 | state |= BMAP_LEFT_VALID; |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2726 | if (isnullstartblock(left.br_startblock)) |
| 2727 | state |= BMAP_LEFT_DELAY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2728 | } |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2729 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2730 | /* |
| 2731 | * Check and set flags if this segment has a current value. |
| 2732 | * Not true if we're inserting into the "hole" at eof. |
| 2733 | */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2734 | if (xfs_iext_get_extent(ifp, icur, &right)) { |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2735 | state |= BMAP_RIGHT_VALID; |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2736 | if (isnullstartblock(right.br_startblock)) |
| 2737 | state |= BMAP_RIGHT_DELAY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2738 | } |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2739 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2740 | /* |
| 2741 | * We're inserting a real allocation between "left" and "right". |
| 2742 | * Set the contiguity flags. Don't let extents get too large. |
| 2743 | */ |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2744 | if ((state & BMAP_LEFT_VALID) && !(state & BMAP_LEFT_DELAY) && |
| 2745 | left.br_startoff + left.br_blockcount == new->br_startoff && |
| 2746 | left.br_startblock + left.br_blockcount == new->br_startblock && |
| 2747 | left.br_state == new->br_state && |
Chandan Babu R | 95f0b95 | 2021-08-09 12:05:22 +0530 | [diff] [blame] | 2748 | left.br_blockcount + new->br_blockcount <= XFS_MAX_BMBT_EXTLEN) |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2749 | state |= BMAP_LEFT_CONTIG; |
| 2750 | |
| 2751 | if ((state & BMAP_RIGHT_VALID) && !(state & BMAP_RIGHT_DELAY) && |
| 2752 | new->br_startoff + new->br_blockcount == right.br_startoff && |
| 2753 | new->br_startblock + new->br_blockcount == right.br_startblock && |
| 2754 | new->br_state == right.br_state && |
Chandan Babu R | 95f0b95 | 2021-08-09 12:05:22 +0530 | [diff] [blame] | 2755 | new->br_blockcount + right.br_blockcount <= XFS_MAX_BMBT_EXTLEN && |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2756 | (!(state & BMAP_LEFT_CONTIG) || |
| 2757 | left.br_blockcount + new->br_blockcount + |
Chandan Babu R | 95f0b95 | 2021-08-09 12:05:22 +0530 | [diff] [blame] | 2758 | right.br_blockcount <= XFS_MAX_BMBT_EXTLEN)) |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2759 | state |= BMAP_RIGHT_CONTIG; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2760 | |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2761 | error = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2762 | /* |
| 2763 | * Select which case we're in here, and implement it. |
| 2764 | */ |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2765 | switch (state & (BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG)) { |
| 2766 | case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2767 | /* |
| 2768 | * New allocation is contiguous with real allocations on the |
| 2769 | * left and on the right. |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 2770 | * Merge all three into a single extent record. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2771 | */ |
Christoph Hellwig | 1abb9e5 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 2772 | left.br_blockcount += new->br_blockcount + right.br_blockcount; |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 2773 | |
Christoph Hellwig | c38ccf5 | 2017-11-03 10:34:47 -0700 | [diff] [blame] | 2774 | xfs_iext_remove(ip, icur, state); |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2775 | xfs_iext_prev(ifp, icur); |
| 2776 | xfs_iext_update_extent(ip, state, icur, &left); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 2777 | ifp->if_nextents--; |
Christoph Hellwig | ec90c55 | 2011-05-23 08:52:53 +0000 | [diff] [blame] | 2778 | |
Christoph Hellwig | 6d04558 | 2017-04-11 16:45:54 -0700 | [diff] [blame] | 2779 | if (cur == NULL) { |
Eric Sandeen | 9d87c31 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 2780 | rval = XFS_ILOG_CORE | xfs_ilog_fext(whichfork); |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2781 | } else { |
| 2782 | rval = XFS_ILOG_CORE; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2783 | error = xfs_bmbt_lookup_eq(cur, &right, &i); |
Christoph Hellwig | c653424 | 2011-09-18 20:41:05 +0000 | [diff] [blame] | 2784 | if (error) |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2785 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2786 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2787 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2788 | error = -EFSCORRUPTED; |
| 2789 | goto done; |
| 2790 | } |
Christoph Hellwig | 6d04558 | 2017-04-11 16:45:54 -0700 | [diff] [blame] | 2791 | error = xfs_btree_delete(cur, &i); |
Christoph Hellwig | c653424 | 2011-09-18 20:41:05 +0000 | [diff] [blame] | 2792 | if (error) |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2793 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2794 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2795 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2796 | error = -EFSCORRUPTED; |
| 2797 | goto done; |
| 2798 | } |
Christoph Hellwig | 6d04558 | 2017-04-11 16:45:54 -0700 | [diff] [blame] | 2799 | error = xfs_btree_decrement(cur, 0, &i); |
Christoph Hellwig | c653424 | 2011-09-18 20:41:05 +0000 | [diff] [blame] | 2800 | if (error) |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2801 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2802 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2803 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2804 | error = -EFSCORRUPTED; |
| 2805 | goto done; |
| 2806 | } |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2807 | error = xfs_bmbt_update(cur, &left); |
Christoph Hellwig | c653424 | 2011-09-18 20:41:05 +0000 | [diff] [blame] | 2808 | if (error) |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2809 | goto done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2810 | } |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2811 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2812 | |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2813 | case BMAP_LEFT_CONTIG: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2814 | /* |
| 2815 | * New allocation is contiguous with a real allocation |
| 2816 | * on the left. |
| 2817 | * Merge the new allocation with the left neighbor. |
| 2818 | */ |
Christoph Hellwig | 1abb9e5 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 2819 | old = left; |
Christoph Hellwig | 1abb9e5 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 2820 | left.br_blockcount += new->br_blockcount; |
Christoph Hellwig | 1d2e008 | 2017-11-03 10:34:40 -0700 | [diff] [blame] | 2821 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2822 | xfs_iext_prev(ifp, icur); |
| 2823 | xfs_iext_update_extent(ip, state, icur, &left); |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 2824 | |
Christoph Hellwig | 6d04558 | 2017-04-11 16:45:54 -0700 | [diff] [blame] | 2825 | if (cur == NULL) { |
Eric Sandeen | 9d87c31 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 2826 | rval = xfs_ilog_fext(whichfork); |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2827 | } else { |
| 2828 | rval = 0; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2829 | error = xfs_bmbt_lookup_eq(cur, &old, &i); |
Christoph Hellwig | c653424 | 2011-09-18 20:41:05 +0000 | [diff] [blame] | 2830 | if (error) |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2831 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2832 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2833 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2834 | error = -EFSCORRUPTED; |
| 2835 | goto done; |
| 2836 | } |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2837 | error = xfs_bmbt_update(cur, &left); |
Christoph Hellwig | c653424 | 2011-09-18 20:41:05 +0000 | [diff] [blame] | 2838 | if (error) |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2839 | goto done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2840 | } |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2841 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2842 | |
Christoph Hellwig | 7574aa9 | 2009-11-25 00:00:19 +0000 | [diff] [blame] | 2843 | case BMAP_RIGHT_CONTIG: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2844 | /* |
| 2845 | * New allocation is contiguous with a real allocation |
| 2846 | * on the right. |
| 2847 | * Merge the new allocation with the right neighbor. |
| 2848 | */ |
Christoph Hellwig | 1abb9e5 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 2849 | old = right; |
Christoph Hellwig | ca5d8e5b | 2017-10-19 11:04:44 -0700 | [diff] [blame] | 2850 | |
Christoph Hellwig | 1abb9e5 | 2017-10-17 14:16:24 -0700 | [diff] [blame] | 2851 | right.br_startoff = new->br_startoff; |
| 2852 | right.br_startblock = new->br_startblock; |
| 2853 | right.br_blockcount += new->br_blockcount; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 2854 | xfs_iext_update_extent(ip, state, icur, &right); |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 2855 | |
Christoph Hellwig | 6d04558 | 2017-04-11 16:45:54 -0700 | [diff] [blame] | 2856 | if (cur == NULL) { |
Eric Sandeen | 9d87c31 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 2857 | rval = xfs_ilog_fext(whichfork); |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2858 | } else { |
| 2859 | rval = 0; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2860 | error = xfs_bmbt_lookup_eq(cur, &old, &i); |
Christoph Hellwig | c653424 | 2011-09-18 20:41:05 +0000 | [diff] [blame] | 2861 | if (error) |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2862 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2863 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2864 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2865 | error = -EFSCORRUPTED; |
| 2866 | goto done; |
| 2867 | } |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2868 | error = xfs_bmbt_update(cur, &right); |
Christoph Hellwig | c653424 | 2011-09-18 20:41:05 +0000 | [diff] [blame] | 2869 | if (error) |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2870 | goto done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2871 | } |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2872 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2873 | |
| 2874 | case 0: |
| 2875 | /* |
| 2876 | * New allocation is not contiguous with another |
| 2877 | * real allocation. |
| 2878 | * Insert a new entry. |
| 2879 | */ |
Christoph Hellwig | 0254c2f | 2017-11-03 10:34:46 -0700 | [diff] [blame] | 2880 | xfs_iext_insert(ip, icur, new, state); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 2881 | ifp->if_nextents++; |
| 2882 | |
Christoph Hellwig | 6d04558 | 2017-04-11 16:45:54 -0700 | [diff] [blame] | 2883 | if (cur == NULL) { |
Eric Sandeen | 9d87c31 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 2884 | rval = XFS_ILOG_CORE | xfs_ilog_fext(whichfork); |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2885 | } else { |
| 2886 | rval = XFS_ILOG_CORE; |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 2887 | error = xfs_bmbt_lookup_eq(cur, new, &i); |
Christoph Hellwig | c653424 | 2011-09-18 20:41:05 +0000 | [diff] [blame] | 2888 | if (error) |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2889 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2890 | if (XFS_IS_CORRUPT(mp, i != 0)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2891 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2892 | error = -EFSCORRUPTED; |
| 2893 | goto done; |
| 2894 | } |
Christoph Hellwig | 6d04558 | 2017-04-11 16:45:54 -0700 | [diff] [blame] | 2895 | error = xfs_btree_insert(cur, &i); |
Christoph Hellwig | c653424 | 2011-09-18 20:41:05 +0000 | [diff] [blame] | 2896 | if (error) |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2897 | goto done; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2898 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 2899 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 2900 | error = -EFSCORRUPTED; |
| 2901 | goto done; |
| 2902 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2903 | } |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2904 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2905 | } |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 2906 | |
Darrick J. Wong | 95eb308 | 2018-05-09 10:02:32 -0700 | [diff] [blame] | 2907 | /* add reverse mapping unless caller opted out */ |
Darrick J. Wong | bc46ac6 | 2019-08-26 17:06:03 -0700 | [diff] [blame] | 2908 | if (!(flags & XFS_BMAPI_NORMAP)) |
| 2909 | xfs_rmap_map_extent(tp, ip, whichfork, new); |
Darrick J. Wong | 9c19464 | 2016-08-03 12:16:05 +1000 | [diff] [blame] | 2910 | |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 2911 | /* convert to a btree if necessary */ |
Christoph Hellwig | 6d04558 | 2017-04-11 16:45:54 -0700 | [diff] [blame] | 2912 | if (xfs_bmap_needs_btree(ip, whichfork)) { |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 2913 | int tmp_logflags; /* partial log flag return val */ |
| 2914 | |
Christoph Hellwig | 6d04558 | 2017-04-11 16:45:54 -0700 | [diff] [blame] | 2915 | ASSERT(cur == NULL); |
Brian Foster | 280253d | 2018-07-11 22:26:29 -0700 | [diff] [blame] | 2916 | error = xfs_bmap_extents_to_btree(tp, ip, curp, 0, |
| 2917 | &tmp_logflags, whichfork); |
Christoph Hellwig | 6d04558 | 2017-04-11 16:45:54 -0700 | [diff] [blame] | 2918 | *logflagsp |= tmp_logflags; |
| 2919 | cur = *curp; |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 2920 | if (error) |
| 2921 | goto done; |
| 2922 | } |
| 2923 | |
| 2924 | /* clear out the allocated field, done with it now in any case. */ |
Christoph Hellwig | 6d04558 | 2017-04-11 16:45:54 -0700 | [diff] [blame] | 2925 | if (cur) |
Christoph Hellwig | 88ee2f4 | 2024-02-22 12:37:03 -0800 | [diff] [blame] | 2926 | cur->bc_bmap.allocated = 0; |
Christoph Hellwig | c653424 | 2011-09-18 20:41:05 +0000 | [diff] [blame] | 2927 | |
Christoph Hellwig | 6d04558 | 2017-04-11 16:45:54 -0700 | [diff] [blame] | 2928 | xfs_bmap_check_leaf_extents(cur, ip, whichfork); |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2929 | done: |
Christoph Hellwig | 6d04558 | 2017-04-11 16:45:54 -0700 | [diff] [blame] | 2930 | *logflagsp |= rval; |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2931 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2932 | } |
| 2933 | |
Nathan Scott | dd9f438 | 2006-01-11 15:28:28 +1100 | [diff] [blame] | 2934 | /* |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 2935 | * Functions used in the extent read, allocate and remove paths |
| 2936 | */ |
| 2937 | |
| 2938 | /* |
Christoph Hellwig | 031474c | 2021-03-29 11:11:41 -0700 | [diff] [blame] | 2939 | * Adjust the size of the new extent based on i_extsize and rt extsize. |
Nathan Scott | dd9f438 | 2006-01-11 15:28:28 +1100 | [diff] [blame] | 2940 | */ |
Dave Chinner | 6898811 | 2013-08-12 20:49:42 +1000 | [diff] [blame] | 2941 | int |
Nathan Scott | dd9f438 | 2006-01-11 15:28:28 +1100 | [diff] [blame] | 2942 | xfs_bmap_extsize_align( |
| 2943 | xfs_mount_t *mp, |
| 2944 | xfs_bmbt_irec_t *gotp, /* next extent pointer */ |
| 2945 | xfs_bmbt_irec_t *prevp, /* previous extent pointer */ |
| 2946 | xfs_extlen_t extsz, /* align to this extent size */ |
| 2947 | int rt, /* is this a realtime inode? */ |
| 2948 | int eof, /* is extent at end-of-file? */ |
| 2949 | int delay, /* creating delalloc extent? */ |
| 2950 | int convert, /* overwriting unwritten extent? */ |
| 2951 | xfs_fileoff_t *offp, /* in/out: aligned offset */ |
| 2952 | xfs_extlen_t *lenp) /* in/out: aligned length */ |
| 2953 | { |
| 2954 | xfs_fileoff_t orig_off; /* original offset */ |
| 2955 | xfs_extlen_t orig_alen; /* original length */ |
| 2956 | xfs_fileoff_t orig_end; /* original off+len */ |
| 2957 | xfs_fileoff_t nexto; /* next file offset */ |
| 2958 | xfs_fileoff_t prevo; /* previous file offset */ |
| 2959 | xfs_fileoff_t align_off; /* temp for offset */ |
| 2960 | xfs_extlen_t align_alen; /* temp for length */ |
| 2961 | xfs_extlen_t temp; /* temp for calculations */ |
| 2962 | |
| 2963 | if (convert) |
| 2964 | return 0; |
| 2965 | |
| 2966 | orig_off = align_off = *offp; |
| 2967 | orig_alen = align_alen = *lenp; |
| 2968 | orig_end = orig_off + orig_alen; |
| 2969 | |
| 2970 | /* |
| 2971 | * If this request overlaps an existing extent, then don't |
| 2972 | * attempt to perform any additional alignment. |
| 2973 | */ |
| 2974 | if (!delay && !eof && |
| 2975 | (orig_off >= gotp->br_startoff) && |
| 2976 | (orig_end <= gotp->br_startoff + gotp->br_blockcount)) { |
| 2977 | return 0; |
| 2978 | } |
| 2979 | |
| 2980 | /* |
| 2981 | * If the file offset is unaligned vs. the extent size |
| 2982 | * we need to align it. This will be possible unless |
| 2983 | * the file was previously written with a kernel that didn't |
| 2984 | * perform this alignment, or if a truncate shot us in the |
| 2985 | * foot. |
| 2986 | */ |
Dave Chinner | 0703a8e | 2018-06-08 09:54:22 -0700 | [diff] [blame] | 2987 | div_u64_rem(orig_off, extsz, &temp); |
Nathan Scott | dd9f438 | 2006-01-11 15:28:28 +1100 | [diff] [blame] | 2988 | if (temp) { |
| 2989 | align_alen += temp; |
| 2990 | align_off -= temp; |
| 2991 | } |
Dave Chinner | 6dea405e | 2015-05-29 07:40:06 +1000 | [diff] [blame] | 2992 | |
| 2993 | /* Same adjustment for the end of the requested area. */ |
| 2994 | temp = (align_alen % extsz); |
| 2995 | if (temp) |
Nathan Scott | dd9f438 | 2006-01-11 15:28:28 +1100 | [diff] [blame] | 2996 | align_alen += extsz - temp; |
Dave Chinner | 6dea405e | 2015-05-29 07:40:06 +1000 | [diff] [blame] | 2997 | |
| 2998 | /* |
| 2999 | * For large extent hint sizes, the aligned extent might be larger than |
Chandan Babu R | 95f0b95 | 2021-08-09 12:05:22 +0530 | [diff] [blame] | 3000 | * XFS_BMBT_MAX_EXTLEN. In that case, reduce the size by an extsz so |
| 3001 | * that it pulls the length back under XFS_BMBT_MAX_EXTLEN. The outer |
| 3002 | * allocation loops handle short allocation just fine, so it is safe to |
| 3003 | * do this. We only want to do it when we are forced to, though, because |
| 3004 | * it means more allocation operations are required. |
Dave Chinner | 6dea405e | 2015-05-29 07:40:06 +1000 | [diff] [blame] | 3005 | */ |
Chandan Babu R | 95f0b95 | 2021-08-09 12:05:22 +0530 | [diff] [blame] | 3006 | while (align_alen > XFS_MAX_BMBT_EXTLEN) |
Dave Chinner | 6dea405e | 2015-05-29 07:40:06 +1000 | [diff] [blame] | 3007 | align_alen -= extsz; |
Chandan Babu R | 95f0b95 | 2021-08-09 12:05:22 +0530 | [diff] [blame] | 3008 | ASSERT(align_alen <= XFS_MAX_BMBT_EXTLEN); |
Dave Chinner | 6dea405e | 2015-05-29 07:40:06 +1000 | [diff] [blame] | 3009 | |
Nathan Scott | dd9f438 | 2006-01-11 15:28:28 +1100 | [diff] [blame] | 3010 | /* |
| 3011 | * If the previous block overlaps with this proposed allocation |
| 3012 | * then move the start forward without adjusting the length. |
| 3013 | */ |
| 3014 | if (prevp->br_startoff != NULLFILEOFF) { |
| 3015 | if (prevp->br_startblock == HOLESTARTBLOCK) |
| 3016 | prevo = prevp->br_startoff; |
| 3017 | else |
| 3018 | prevo = prevp->br_startoff + prevp->br_blockcount; |
| 3019 | } else |
| 3020 | prevo = 0; |
| 3021 | if (align_off != orig_off && align_off < prevo) |
| 3022 | align_off = prevo; |
| 3023 | /* |
| 3024 | * If the next block overlaps with this proposed allocation |
| 3025 | * then move the start back without adjusting the length, |
| 3026 | * but not before offset 0. |
| 3027 | * This may of course make the start overlap previous block, |
| 3028 | * and if we hit the offset 0 limit then the next block |
| 3029 | * can still overlap too. |
| 3030 | */ |
| 3031 | if (!eof && gotp->br_startoff != NULLFILEOFF) { |
| 3032 | if ((delay && gotp->br_startblock == HOLESTARTBLOCK) || |
| 3033 | (!delay && gotp->br_startblock == DELAYSTARTBLOCK)) |
| 3034 | nexto = gotp->br_startoff + gotp->br_blockcount; |
| 3035 | else |
| 3036 | nexto = gotp->br_startoff; |
| 3037 | } else |
| 3038 | nexto = NULLFILEOFF; |
| 3039 | if (!eof && |
| 3040 | align_off + align_alen != orig_end && |
| 3041 | align_off + align_alen > nexto) |
| 3042 | align_off = nexto > align_alen ? nexto - align_alen : 0; |
| 3043 | /* |
| 3044 | * If we're now overlapping the next or previous extent that |
| 3045 | * means we can't fit an extsz piece in this hole. Just move |
| 3046 | * the start forward to the first valid spot and set |
| 3047 | * the length so we hit the end. |
| 3048 | */ |
| 3049 | if (align_off != orig_off && align_off < prevo) |
| 3050 | align_off = prevo; |
| 3051 | if (align_off + align_alen != orig_end && |
| 3052 | align_off + align_alen > nexto && |
| 3053 | nexto != NULLFILEOFF) { |
| 3054 | ASSERT(nexto > prevo); |
| 3055 | align_alen = nexto - align_off; |
| 3056 | } |
| 3057 | |
| 3058 | /* |
| 3059 | * If realtime, and the result isn't a multiple of the realtime |
| 3060 | * extent size we need to remove blocks until it is. |
| 3061 | */ |
Darrick J. Wong | 68db60b | 2023-10-16 09:34:39 -0700 | [diff] [blame] | 3062 | if (rt && (temp = xfs_extlen_to_rtxmod(mp, align_alen))) { |
Nathan Scott | dd9f438 | 2006-01-11 15:28:28 +1100 | [diff] [blame] | 3063 | /* |
| 3064 | * We're not covering the original request, or |
| 3065 | * we won't be able to once we fix the length. |
| 3066 | */ |
| 3067 | if (orig_off < align_off || |
| 3068 | orig_end > align_off + align_alen || |
| 3069 | align_alen - temp < orig_alen) |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 3070 | return -EINVAL; |
Nathan Scott | dd9f438 | 2006-01-11 15:28:28 +1100 | [diff] [blame] | 3071 | /* |
| 3072 | * Try to fix it by moving the start up. |
| 3073 | */ |
| 3074 | if (align_off + temp <= orig_off) { |
| 3075 | align_alen -= temp; |
| 3076 | align_off += temp; |
| 3077 | } |
| 3078 | /* |
| 3079 | * Try to fix it by moving the end in. |
| 3080 | */ |
| 3081 | else if (align_off + align_alen - temp >= orig_end) |
| 3082 | align_alen -= temp; |
| 3083 | /* |
| 3084 | * Set the start to the minimum then trim the length. |
| 3085 | */ |
| 3086 | else { |
| 3087 | align_alen -= orig_off - align_off; |
| 3088 | align_off = orig_off; |
Darrick J. Wong | 68db60b | 2023-10-16 09:34:39 -0700 | [diff] [blame] | 3089 | align_alen -= xfs_extlen_to_rtxmod(mp, align_alen); |
Nathan Scott | dd9f438 | 2006-01-11 15:28:28 +1100 | [diff] [blame] | 3090 | } |
| 3091 | /* |
| 3092 | * Result doesn't cover the request, fail it. |
| 3093 | */ |
| 3094 | if (orig_off < align_off || orig_end > align_off + align_alen) |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 3095 | return -EINVAL; |
Nathan Scott | dd9f438 | 2006-01-11 15:28:28 +1100 | [diff] [blame] | 3096 | } else { |
| 3097 | ASSERT(orig_off >= align_off); |
Chandan Babu R | 95f0b95 | 2021-08-09 12:05:22 +0530 | [diff] [blame] | 3098 | /* see XFS_BMBT_MAX_EXTLEN handling above */ |
Dave Chinner | 6dea405e | 2015-05-29 07:40:06 +1000 | [diff] [blame] | 3099 | ASSERT(orig_end <= align_off + align_alen || |
Chandan Babu R | 95f0b95 | 2021-08-09 12:05:22 +0530 | [diff] [blame] | 3100 | align_alen + extsz > XFS_MAX_BMBT_EXTLEN); |
Nathan Scott | dd9f438 | 2006-01-11 15:28:28 +1100 | [diff] [blame] | 3101 | } |
| 3102 | |
| 3103 | #ifdef DEBUG |
| 3104 | if (!eof && gotp->br_startoff != NULLFILEOFF) |
| 3105 | ASSERT(align_off + align_alen <= gotp->br_startoff); |
| 3106 | if (prevp->br_startoff != NULLFILEOFF) |
| 3107 | ASSERT(align_off >= prevp->br_startoff + prevp->br_blockcount); |
| 3108 | #endif |
| 3109 | |
| 3110 | *lenp = align_alen; |
| 3111 | *offp = align_off; |
| 3112 | return 0; |
| 3113 | } |
| 3114 | |
Christoph Hellwig | 1e21d18 | 2024-08-30 15:37:09 -0700 | [diff] [blame] | 3115 | static inline bool |
| 3116 | xfs_bmap_adjacent_valid( |
| 3117 | struct xfs_bmalloca *ap, |
| 3118 | xfs_fsblock_t x, |
| 3119 | xfs_fsblock_t y) |
| 3120 | { |
| 3121 | struct xfs_mount *mp = ap->ip->i_mount; |
| 3122 | |
| 3123 | if (XFS_IS_REALTIME_INODE(ap->ip) && |
| 3124 | (ap->datatype & XFS_ALLOC_USERDATA)) |
| 3125 | return x < mp->m_sb.sb_rblocks; |
| 3126 | |
| 3127 | return XFS_FSB_TO_AGNO(mp, x) == XFS_FSB_TO_AGNO(mp, y) && |
| 3128 | XFS_FSB_TO_AGNO(mp, x) < mp->m_sb.sb_agcount && |
| 3129 | XFS_FSB_TO_AGBNO(mp, x) < mp->m_sb.sb_agblocks; |
| 3130 | } |
| 3131 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3132 | #define XFS_ALLOC_GAP_UNITS 4 |
| 3133 | |
Christoph Hellwig | 676544c | 2023-12-18 05:57:24 +0100 | [diff] [blame] | 3134 | /* returns true if ap->blkno was modified */ |
| 3135 | bool |
Nathan Scott | a365bdd | 2006-03-14 13:34:16 +1100 | [diff] [blame] | 3136 | xfs_bmap_adjacent( |
Dave Chinner | 6898811 | 2013-08-12 20:49:42 +1000 | [diff] [blame] | 3137 | struct xfs_bmalloca *ap) /* bmap alloc argument struct */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3138 | { |
Christoph Hellwig | 1e21d18 | 2024-08-30 15:37:09 -0700 | [diff] [blame] | 3139 | xfs_fsblock_t adjust; /* adjustment to block numbers */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3140 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3141 | /* |
| 3142 | * If allocating at eof, and there's a previous real block, |
Malcolm Parsons | 9da096f | 2009-03-29 09:55:42 +0200 | [diff] [blame] | 3143 | * try to use its last block as our starting point. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3144 | */ |
Dave Chinner | baf41a5 | 2011-09-18 20:40:56 +0000 | [diff] [blame] | 3145 | if (ap->eof && ap->prev.br_startoff != NULLFILEOFF && |
| 3146 | !isnullstartblock(ap->prev.br_startblock) && |
Christoph Hellwig | 1e21d18 | 2024-08-30 15:37:09 -0700 | [diff] [blame] | 3147 | xfs_bmap_adjacent_valid(ap, |
| 3148 | ap->prev.br_startblock + ap->prev.br_blockcount, |
| 3149 | ap->prev.br_startblock)) { |
Dave Chinner | 3a75667 | 2011-09-18 20:40:58 +0000 | [diff] [blame] | 3150 | ap->blkno = ap->prev.br_startblock + ap->prev.br_blockcount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3151 | /* |
| 3152 | * Adjust for the gap between prevp and us. |
| 3153 | */ |
Dave Chinner | 3a75667 | 2011-09-18 20:40:58 +0000 | [diff] [blame] | 3154 | adjust = ap->offset - |
Dave Chinner | baf41a5 | 2011-09-18 20:40:56 +0000 | [diff] [blame] | 3155 | (ap->prev.br_startoff + ap->prev.br_blockcount); |
Christoph Hellwig | 1e21d18 | 2024-08-30 15:37:09 -0700 | [diff] [blame] | 3156 | if (adjust && xfs_bmap_adjacent_valid(ap, ap->blkno + adjust, |
| 3157 | ap->prev.br_startblock)) |
Dave Chinner | 3a75667 | 2011-09-18 20:40:58 +0000 | [diff] [blame] | 3158 | ap->blkno += adjust; |
Christoph Hellwig | 676544c | 2023-12-18 05:57:24 +0100 | [diff] [blame] | 3159 | return true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3160 | } |
| 3161 | /* |
| 3162 | * If not at eof, then compare the two neighbor blocks. |
| 3163 | * Figure out whether either one gives us a good starting point, |
| 3164 | * and pick the better one. |
| 3165 | */ |
Christoph Hellwig | 676544c | 2023-12-18 05:57:24 +0100 | [diff] [blame] | 3166 | if (!ap->eof) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3167 | xfs_fsblock_t gotbno; /* right side block number */ |
| 3168 | xfs_fsblock_t gotdiff=0; /* right side difference */ |
| 3169 | xfs_fsblock_t prevbno; /* left side block number */ |
| 3170 | xfs_fsblock_t prevdiff=0; /* left side difference */ |
| 3171 | |
| 3172 | /* |
| 3173 | * If there's a previous (left) block, select a requested |
| 3174 | * start block based on it. |
| 3175 | */ |
Dave Chinner | baf41a5 | 2011-09-18 20:40:56 +0000 | [diff] [blame] | 3176 | if (ap->prev.br_startoff != NULLFILEOFF && |
| 3177 | !isnullstartblock(ap->prev.br_startblock) && |
| 3178 | (prevbno = ap->prev.br_startblock + |
| 3179 | ap->prev.br_blockcount) && |
Christoph Hellwig | 1e21d18 | 2024-08-30 15:37:09 -0700 | [diff] [blame] | 3180 | xfs_bmap_adjacent_valid(ap, prevbno, |
| 3181 | ap->prev.br_startblock)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3182 | /* |
| 3183 | * Calculate gap to end of previous block. |
| 3184 | */ |
Dave Chinner | 3a75667 | 2011-09-18 20:40:58 +0000 | [diff] [blame] | 3185 | adjust = prevdiff = ap->offset - |
Dave Chinner | baf41a5 | 2011-09-18 20:40:56 +0000 | [diff] [blame] | 3186 | (ap->prev.br_startoff + |
| 3187 | ap->prev.br_blockcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3188 | /* |
| 3189 | * Figure the startblock based on the previous block's |
| 3190 | * end and the gap size. |
| 3191 | * Heuristic! |
| 3192 | * If the gap is large relative to the piece we're |
| 3193 | * allocating, or using it gives us an invalid block |
| 3194 | * number, then just use the end of the previous block. |
| 3195 | */ |
Dave Chinner | 3a75667 | 2011-09-18 20:40:58 +0000 | [diff] [blame] | 3196 | if (prevdiff <= XFS_ALLOC_GAP_UNITS * ap->length && |
Christoph Hellwig | 1e21d18 | 2024-08-30 15:37:09 -0700 | [diff] [blame] | 3197 | xfs_bmap_adjacent_valid(ap, prevbno + prevdiff, |
| 3198 | ap->prev.br_startblock)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3199 | prevbno += adjust; |
| 3200 | else |
| 3201 | prevdiff += adjust; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3202 | } |
| 3203 | /* |
| 3204 | * No previous block or can't follow it, just default. |
| 3205 | */ |
| 3206 | else |
| 3207 | prevbno = NULLFSBLOCK; |
| 3208 | /* |
| 3209 | * If there's a following (right) block, select a requested |
| 3210 | * start block based on it. |
| 3211 | */ |
Dave Chinner | baf41a5 | 2011-09-18 20:40:56 +0000 | [diff] [blame] | 3212 | if (!isnullstartblock(ap->got.br_startblock)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3213 | /* |
| 3214 | * Calculate gap to start of next block. |
| 3215 | */ |
Dave Chinner | 3a75667 | 2011-09-18 20:40:58 +0000 | [diff] [blame] | 3216 | adjust = gotdiff = ap->got.br_startoff - ap->offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3217 | /* |
| 3218 | * Figure the startblock based on the next block's |
| 3219 | * start and the gap size. |
| 3220 | */ |
Dave Chinner | baf41a5 | 2011-09-18 20:40:56 +0000 | [diff] [blame] | 3221 | gotbno = ap->got.br_startblock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3222 | /* |
| 3223 | * Heuristic! |
| 3224 | * If the gap is large relative to the piece we're |
| 3225 | * allocating, or using it gives us an invalid block |
| 3226 | * number, then just use the start of the next block |
| 3227 | * offset by our length. |
| 3228 | */ |
Dave Chinner | 3a75667 | 2011-09-18 20:40:58 +0000 | [diff] [blame] | 3229 | if (gotdiff <= XFS_ALLOC_GAP_UNITS * ap->length && |
Christoph Hellwig | 1e21d18 | 2024-08-30 15:37:09 -0700 | [diff] [blame] | 3230 | xfs_bmap_adjacent_valid(ap, gotbno - gotdiff, |
| 3231 | gotbno)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3232 | gotbno -= adjust; |
Christoph Hellwig | 1e21d18 | 2024-08-30 15:37:09 -0700 | [diff] [blame] | 3233 | else if (xfs_bmap_adjacent_valid(ap, gotbno - ap->length, |
| 3234 | gotbno)) { |
Dave Chinner | 3a75667 | 2011-09-18 20:40:58 +0000 | [diff] [blame] | 3235 | gotbno -= ap->length; |
| 3236 | gotdiff += adjust - ap->length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3237 | } else |
| 3238 | gotdiff += adjust; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3239 | } |
| 3240 | /* |
| 3241 | * No next block, just default. |
| 3242 | */ |
| 3243 | else |
| 3244 | gotbno = NULLFSBLOCK; |
| 3245 | /* |
| 3246 | * If both valid, pick the better one, else the only good |
Dave Chinner | 3a75667 | 2011-09-18 20:40:58 +0000 | [diff] [blame] | 3247 | * one, else ap->blkno is already set (to 0 or the inode block). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3248 | */ |
Christoph Hellwig | 676544c | 2023-12-18 05:57:24 +0100 | [diff] [blame] | 3249 | if (prevbno != NULLFSBLOCK && gotbno != NULLFSBLOCK) { |
Dave Chinner | 3a75667 | 2011-09-18 20:40:58 +0000 | [diff] [blame] | 3250 | ap->blkno = prevdiff <= gotdiff ? prevbno : gotbno; |
Christoph Hellwig | 676544c | 2023-12-18 05:57:24 +0100 | [diff] [blame] | 3251 | return true; |
| 3252 | } |
| 3253 | if (prevbno != NULLFSBLOCK) { |
Dave Chinner | 3a75667 | 2011-09-18 20:40:58 +0000 | [diff] [blame] | 3254 | ap->blkno = prevbno; |
Christoph Hellwig | 676544c | 2023-12-18 05:57:24 +0100 | [diff] [blame] | 3255 | return true; |
| 3256 | } |
| 3257 | if (gotbno != NULLFSBLOCK) { |
Dave Chinner | 3a75667 | 2011-09-18 20:40:58 +0000 | [diff] [blame] | 3258 | ap->blkno = gotbno; |
Christoph Hellwig | 676544c | 2023-12-18 05:57:24 +0100 | [diff] [blame] | 3259 | return true; |
| 3260 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3261 | } |
Christoph Hellwig | 1e21d18 | 2024-08-30 15:37:09 -0700 | [diff] [blame] | 3262 | |
Christoph Hellwig | 676544c | 2023-12-18 05:57:24 +0100 | [diff] [blame] | 3263 | return false; |
Nathan Scott | a365bdd | 2006-03-14 13:34:16 +1100 | [diff] [blame] | 3264 | } |
| 3265 | |
Dave Chinner | 05cf492 | 2023-02-13 09:14:55 +1100 | [diff] [blame] | 3266 | int |
Christoph Hellwig | c977eb1 | 2014-04-23 07:11:41 +1000 | [diff] [blame] | 3267 | xfs_bmap_longest_free_extent( |
Dave Chinner | 76257a1 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3268 | struct xfs_perag *pag, |
Christoph Hellwig | c977eb1 | 2014-04-23 07:11:41 +1000 | [diff] [blame] | 3269 | struct xfs_trans *tp, |
Dave Chinner | 6b637ad | 2023-02-13 09:14:55 +1100 | [diff] [blame] | 3270 | xfs_extlen_t *blen) |
Christoph Hellwig | c977eb1 | 2014-04-23 07:11:41 +1000 | [diff] [blame] | 3271 | { |
Christoph Hellwig | c977eb1 | 2014-04-23 07:11:41 +1000 | [diff] [blame] | 3272 | xfs_extlen_t longest; |
| 3273 | int error = 0; |
| 3274 | |
Dave Chinner | 7ac2ff8 | 2023-02-13 09:14:52 +1100 | [diff] [blame] | 3275 | if (!xfs_perag_initialised_agf(pag)) { |
Dave Chinner | 08d3e84 | 2022-07-07 19:07:40 +1000 | [diff] [blame] | 3276 | error = xfs_alloc_read_agf(pag, tp, XFS_ALLOC_FLAG_TRYLOCK, |
Dave Chinner | 76b47e5 | 2022-07-07 19:07:32 +1000 | [diff] [blame] | 3277 | NULL); |
Dave Chinner | 6b637ad | 2023-02-13 09:14:55 +1100 | [diff] [blame] | 3278 | if (error) |
Dave Chinner | 76257a1 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3279 | return error; |
Christoph Hellwig | c977eb1 | 2014-04-23 07:11:41 +1000 | [diff] [blame] | 3280 | } |
| 3281 | |
Eric Sandeen | a1f6941 | 2018-04-06 10:09:42 -0700 | [diff] [blame] | 3282 | longest = xfs_alloc_longest_free_extent(pag, |
Dave Chinner | 76257a1 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3283 | xfs_alloc_min_freelist(pag->pag_mount, pag), |
Darrick J. Wong | 3fd129b | 2016-09-19 10:30:52 +1000 | [diff] [blame] | 3284 | xfs_ag_resv_needed(pag, XFS_AG_RESV_NONE)); |
Christoph Hellwig | c977eb1 | 2014-04-23 07:11:41 +1000 | [diff] [blame] | 3285 | if (*blen < longest) |
| 3286 | *blen = longest; |
| 3287 | |
Dave Chinner | 76257a1 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3288 | return 0; |
Christoph Hellwig | c977eb1 | 2014-04-23 07:11:41 +1000 | [diff] [blame] | 3289 | } |
| 3290 | |
Dave Chinner | 6b637ad | 2023-02-13 09:14:55 +1100 | [diff] [blame] | 3291 | static xfs_extlen_t |
Christoph Hellwig | c977eb1 | 2014-04-23 07:11:41 +1000 | [diff] [blame] | 3292 | xfs_bmap_select_minlen( |
| 3293 | struct xfs_bmalloca *ap, |
| 3294 | struct xfs_alloc_arg *args, |
Dave Chinner | 6b637ad | 2023-02-13 09:14:55 +1100 | [diff] [blame] | 3295 | xfs_extlen_t blen) |
Christoph Hellwig | c977eb1 | 2014-04-23 07:11:41 +1000 | [diff] [blame] | 3296 | { |
Dave Chinner | 6b637ad | 2023-02-13 09:14:55 +1100 | [diff] [blame] | 3297 | |
| 3298 | /* |
| 3299 | * Since we used XFS_ALLOC_FLAG_TRYLOCK in _longest_free_extent(), it is |
| 3300 | * possible that there is enough contiguous free space for this request. |
| 3301 | */ |
| 3302 | if (blen < ap->minlen) |
| 3303 | return ap->minlen; |
| 3304 | |
| 3305 | /* |
| 3306 | * If the best seen length is less than the request length, |
| 3307 | * use the best as the minimum, otherwise we've got the maxlen we |
| 3308 | * were asked for. |
| 3309 | */ |
| 3310 | if (blen < args->maxlen) |
| 3311 | return blen; |
| 3312 | return args->maxlen; |
Christoph Hellwig | c977eb1 | 2014-04-23 07:11:41 +1000 | [diff] [blame] | 3313 | } |
| 3314 | |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3315 | static int |
Dave Chinner | 36b6ad2 | 2023-02-11 04:10:06 +1100 | [diff] [blame] | 3316 | xfs_bmap_btalloc_select_lengths( |
Christoph Hellwig | c467c04 | 2010-02-15 23:34:42 +0000 | [diff] [blame] | 3317 | struct xfs_bmalloca *ap, |
| 3318 | struct xfs_alloc_arg *args, |
| 3319 | xfs_extlen_t *blen) |
| 3320 | { |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3321 | struct xfs_mount *mp = args->mp; |
Dave Chinner | 76257a1 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3322 | struct xfs_perag *pag; |
| 3323 | xfs_agnumber_t agno, startag; |
Dave Chinner | 76257a1 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3324 | int error = 0; |
Christoph Hellwig | c467c04 | 2010-02-15 23:34:42 +0000 | [diff] [blame] | 3325 | |
Dave Chinner | 36b6ad2 | 2023-02-11 04:10:06 +1100 | [diff] [blame] | 3326 | if (ap->tp->t_flags & XFS_TRANS_LOWMODE) { |
| 3327 | args->total = ap->minlen; |
| 3328 | args->minlen = ap->minlen; |
| 3329 | return 0; |
| 3330 | } |
Christoph Hellwig | c467c04 | 2010-02-15 23:34:42 +0000 | [diff] [blame] | 3331 | |
Dave Chinner | 36b6ad2 | 2023-02-11 04:10:06 +1100 | [diff] [blame] | 3332 | args->total = ap->total; |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3333 | startag = XFS_FSB_TO_AGNO(mp, ap->blkno); |
Christoph Hellwig | c467c04 | 2010-02-15 23:34:42 +0000 | [diff] [blame] | 3334 | if (startag == NULLAGNUMBER) |
Dave Chinner | 76257a1 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3335 | startag = 0; |
Christoph Hellwig | c467c04 | 2010-02-15 23:34:42 +0000 | [diff] [blame] | 3336 | |
Dave Chinner | 76257a1 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3337 | *blen = 0; |
| 3338 | for_each_perag_wrap(mp, startag, agno, pag) { |
Dave Chinner | 6b637ad | 2023-02-13 09:14:55 +1100 | [diff] [blame] | 3339 | error = xfs_bmap_longest_free_extent(pag, args->tp, blen); |
| 3340 | if (error && error != -EAGAIN) |
Dave Chinner | 76257a1 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3341 | break; |
Dave Chinner | 6b637ad | 2023-02-13 09:14:55 +1100 | [diff] [blame] | 3342 | error = 0; |
Dave Chinner | 76257a1 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3343 | if (*blen >= args->maxlen) |
Christoph Hellwig | c467c04 | 2010-02-15 23:34:42 +0000 | [diff] [blame] | 3344 | break; |
Christoph Hellwig | c467c04 | 2010-02-15 23:34:42 +0000 | [diff] [blame] | 3345 | } |
Dave Chinner | 76257a1 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3346 | if (pag) |
| 3347 | xfs_perag_rele(pag); |
Christoph Hellwig | c977eb1 | 2014-04-23 07:11:41 +1000 | [diff] [blame] | 3348 | |
Dave Chinner | 6b637ad | 2023-02-13 09:14:55 +1100 | [diff] [blame] | 3349 | args->minlen = xfs_bmap_select_minlen(ap, args, *blen); |
Dave Chinner | 76257a1 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3350 | return error; |
Christoph Hellwig | c977eb1 | 2014-04-23 07:11:41 +1000 | [diff] [blame] | 3351 | } |
| 3352 | |
Darrick J. Wong | 751f376 | 2018-01-25 13:58:13 -0800 | [diff] [blame] | 3353 | /* Update all inode and quota accounting for the allocation we just did. */ |
Christoph Hellwig | 5864346 | 2023-12-18 05:57:20 +0100 | [diff] [blame] | 3354 | void |
| 3355 | xfs_bmap_alloc_account( |
Christoph Hellwig | eef519d | 2023-12-18 05:57:19 +0100 | [diff] [blame] | 3356 | struct xfs_bmalloca *ap) |
Darrick J. Wong | 751f376 | 2018-01-25 13:58:13 -0800 | [diff] [blame] | 3357 | { |
Christoph Hellwig | 5864346 | 2023-12-18 05:57:20 +0100 | [diff] [blame] | 3358 | bool isrt = XFS_IS_REALTIME_INODE(ap->ip) && |
Darrick J. Wong | d61b40b | 2024-01-08 18:17:34 -0800 | [diff] [blame] | 3359 | !(ap->flags & XFS_BMAPI_ATTRFORK); |
Christoph Hellwig | 5864346 | 2023-12-18 05:57:20 +0100 | [diff] [blame] | 3360 | uint fld; |
| 3361 | |
Darrick J. Wong | 4b4c132 | 2018-01-19 09:05:48 -0800 | [diff] [blame] | 3362 | if (ap->flags & XFS_BMAPI_COWFORK) { |
| 3363 | /* |
| 3364 | * COW fork blocks are in-core only and thus are treated as |
| 3365 | * in-core quota reservation (like delalloc blocks) even when |
| 3366 | * converted to real blocks. The quota reservation is not |
| 3367 | * accounted to disk until blocks are remapped to the data |
| 3368 | * fork. So if these blocks were previously delalloc, we |
| 3369 | * already have quota reservation and there's nothing to do |
| 3370 | * yet. |
| 3371 | */ |
Darrick J. Wong | 9fe82b8 | 2019-04-25 18:26:22 -0700 | [diff] [blame] | 3372 | if (ap->wasdel) { |
Christoph Hellwig | 7099bd0 | 2024-04-22 13:20:15 +0200 | [diff] [blame] | 3373 | xfs_mod_delalloc(ap->ip, -(int64_t)ap->length, 0); |
Darrick J. Wong | 4b4c132 | 2018-01-19 09:05:48 -0800 | [diff] [blame] | 3374 | return; |
Darrick J. Wong | 9fe82b8 | 2019-04-25 18:26:22 -0700 | [diff] [blame] | 3375 | } |
Darrick J. Wong | 4b4c132 | 2018-01-19 09:05:48 -0800 | [diff] [blame] | 3376 | |
| 3377 | /* |
| 3378 | * Otherwise, we've allocated blocks in a hole. The transaction |
| 3379 | * has acquired in-core quota reservation for this extent. |
| 3380 | * Rather than account these as real blocks, however, we reduce |
| 3381 | * the transaction quota reservation based on the allocation. |
| 3382 | * This essentially transfers the transaction quota reservation |
| 3383 | * to that of a delalloc extent. |
| 3384 | */ |
Christoph Hellwig | eef519d | 2023-12-18 05:57:19 +0100 | [diff] [blame] | 3385 | ap->ip->i_delayed_blks += ap->length; |
Christoph Hellwig | 5864346 | 2023-12-18 05:57:20 +0100 | [diff] [blame] | 3386 | xfs_trans_mod_dquot_byino(ap->tp, ap->ip, isrt ? |
| 3387 | XFS_TRANS_DQ_RES_RTBLKS : XFS_TRANS_DQ_RES_BLKS, |
Christoph Hellwig | eef519d | 2023-12-18 05:57:19 +0100 | [diff] [blame] | 3388 | -(long)ap->length); |
Darrick J. Wong | 4b4c132 | 2018-01-19 09:05:48 -0800 | [diff] [blame] | 3389 | return; |
| 3390 | } |
| 3391 | |
| 3392 | /* data/attr fork only */ |
Christoph Hellwig | eef519d | 2023-12-18 05:57:19 +0100 | [diff] [blame] | 3393 | ap->ip->i_nblocks += ap->length; |
Darrick J. Wong | 751f376 | 2018-01-25 13:58:13 -0800 | [diff] [blame] | 3394 | xfs_trans_log_inode(ap->tp, ap->ip, XFS_ILOG_CORE); |
Darrick J. Wong | 9fe82b8 | 2019-04-25 18:26:22 -0700 | [diff] [blame] | 3395 | if (ap->wasdel) { |
Christoph Hellwig | eef519d | 2023-12-18 05:57:19 +0100 | [diff] [blame] | 3396 | ap->ip->i_delayed_blks -= ap->length; |
Christoph Hellwig | 7099bd0 | 2024-04-22 13:20:15 +0200 | [diff] [blame] | 3397 | xfs_mod_delalloc(ap->ip, -(int64_t)ap->length, 0); |
Christoph Hellwig | 5864346 | 2023-12-18 05:57:20 +0100 | [diff] [blame] | 3398 | fld = isrt ? XFS_TRANS_DQ_DELRTBCOUNT : XFS_TRANS_DQ_DELBCOUNT; |
| 3399 | } else { |
| 3400 | fld = isrt ? XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; |
Darrick J. Wong | 9fe82b8 | 2019-04-25 18:26:22 -0700 | [diff] [blame] | 3401 | } |
Christoph Hellwig | 5864346 | 2023-12-18 05:57:20 +0100 | [diff] [blame] | 3402 | |
| 3403 | xfs_trans_mod_dquot_byino(ap->tp, ap->ip, fld, ap->length); |
Darrick J. Wong | 751f376 | 2018-01-25 13:58:13 -0800 | [diff] [blame] | 3404 | } |
| 3405 | |
Chandan Babu R | 0961fdd | 2021-01-22 16:48:16 -0800 | [diff] [blame] | 3406 | static int |
| 3407 | xfs_bmap_compute_alignments( |
| 3408 | struct xfs_bmalloca *ap, |
| 3409 | struct xfs_alloc_arg *args) |
| 3410 | { |
| 3411 | struct xfs_mount *mp = args->mp; |
| 3412 | xfs_extlen_t align = 0; /* minimum allocation alignment */ |
| 3413 | int stripe_align = 0; |
Chandan Babu R | 0961fdd | 2021-01-22 16:48:16 -0800 | [diff] [blame] | 3414 | |
| 3415 | /* stripe alignment for allocation is determined by mount parameters */ |
Dave Chinner | 0560f31 | 2021-08-18 18:46:52 -0700 | [diff] [blame] | 3416 | if (mp->m_swidth && xfs_has_swalloc(mp)) |
Chandan Babu R | 0961fdd | 2021-01-22 16:48:16 -0800 | [diff] [blame] | 3417 | stripe_align = mp->m_swidth; |
| 3418 | else if (mp->m_dalign) |
| 3419 | stripe_align = mp->m_dalign; |
| 3420 | |
| 3421 | if (ap->flags & XFS_BMAPI_COWFORK) |
| 3422 | align = xfs_get_cowextsz_hint(ap->ip); |
| 3423 | else if (ap->datatype & XFS_ALLOC_USERDATA) |
| 3424 | align = xfs_get_extsz_hint(ap->ip); |
| 3425 | if (align) { |
Chandan Babu R | 560ab6c | 2021-01-27 08:35:14 -0800 | [diff] [blame] | 3426 | if (xfs_bmap_extsize_align(mp, &ap->got, &ap->prev, align, 0, |
| 3427 | ap->eof, 0, ap->conv, &ap->offset, |
| 3428 | &ap->length)) |
| 3429 | ASSERT(0); |
Chandan Babu R | 0961fdd | 2021-01-22 16:48:16 -0800 | [diff] [blame] | 3430 | ASSERT(ap->length); |
| 3431 | } |
| 3432 | |
| 3433 | /* apply extent size hints if obtained earlier */ |
| 3434 | if (align) { |
| 3435 | args->prod = align; |
| 3436 | div_u64_rem(ap->offset, args->prod, &args->mod); |
| 3437 | if (args->mod) |
| 3438 | args->mod = args->prod - args->mod; |
| 3439 | } else if (mp->m_sb.sb_blocksize >= PAGE_SIZE) { |
| 3440 | args->prod = 1; |
| 3441 | args->mod = 0; |
| 3442 | } else { |
| 3443 | args->prod = PAGE_SIZE >> mp->m_sb.sb_blocklog; |
| 3444 | div_u64_rem(ap->offset, args->prod, &args->mod); |
| 3445 | if (args->mod) |
| 3446 | args->mod = args->prod - args->mod; |
| 3447 | } |
| 3448 | |
| 3449 | return stripe_align; |
| 3450 | } |
| 3451 | |
Chandan Babu R | 07c72e5 | 2021-01-22 16:48:17 -0800 | [diff] [blame] | 3452 | static void |
| 3453 | xfs_bmap_process_allocated_extent( |
| 3454 | struct xfs_bmalloca *ap, |
| 3455 | struct xfs_alloc_arg *args, |
| 3456 | xfs_fileoff_t orig_offset, |
| 3457 | xfs_extlen_t orig_length) |
| 3458 | { |
Chandan Babu R | 07c72e5 | 2021-01-22 16:48:17 -0800 | [diff] [blame] | 3459 | ap->blkno = args->fsbno; |
Chandan Babu R | 07c72e5 | 2021-01-22 16:48:17 -0800 | [diff] [blame] | 3460 | ap->length = args->len; |
| 3461 | /* |
| 3462 | * If the extent size hint is active, we tried to round the |
| 3463 | * caller's allocation request offset down to extsz and the |
| 3464 | * length up to another extsz boundary. If we found a free |
| 3465 | * extent we mapped it in starting at this new offset. If the |
| 3466 | * newly mapped space isn't long enough to cover any of the |
| 3467 | * range of offsets that was originally requested, move the |
| 3468 | * mapping up so that we can fill as much of the caller's |
| 3469 | * original request as possible. Free space is apparently |
| 3470 | * very fragmented so we're unlikely to be able to satisfy the |
| 3471 | * hints anyway. |
| 3472 | */ |
| 3473 | if (ap->length <= orig_length) |
| 3474 | ap->offset = orig_offset; |
| 3475 | else if (ap->offset + ap->length < orig_offset + orig_length) |
| 3476 | ap->offset = orig_offset + orig_length - ap->length; |
Christoph Hellwig | 5864346 | 2023-12-18 05:57:20 +0100 | [diff] [blame] | 3477 | xfs_bmap_alloc_account(ap); |
Chandan Babu R | 07c72e5 | 2021-01-22 16:48:17 -0800 | [diff] [blame] | 3478 | } |
| 3479 | |
Chandan Babu R | 3015196 | 2021-01-22 16:48:17 -0800 | [diff] [blame] | 3480 | #ifdef DEBUG |
| 3481 | static int |
| 3482 | xfs_bmap_exact_minlen_extent_alloc( |
| 3483 | struct xfs_bmalloca *ap) |
| 3484 | { |
| 3485 | struct xfs_mount *mp = ap->ip->i_mount; |
| 3486 | struct xfs_alloc_arg args = { .tp = ap->tp, .mp = mp }; |
| 3487 | xfs_fileoff_t orig_offset; |
| 3488 | xfs_extlen_t orig_length; |
| 3489 | int error; |
| 3490 | |
| 3491 | ASSERT(ap->length); |
| 3492 | |
| 3493 | if (ap->minlen != 1) { |
| 3494 | ap->blkno = NULLFSBLOCK; |
| 3495 | ap->length = 0; |
| 3496 | return 0; |
| 3497 | } |
| 3498 | |
| 3499 | orig_offset = ap->offset; |
| 3500 | orig_length = ap->length; |
| 3501 | |
| 3502 | args.alloc_minlen_only = 1; |
| 3503 | |
| 3504 | xfs_bmap_compute_alignments(ap, &args); |
| 3505 | |
Dave Chinner | 36b6ad2 | 2023-02-11 04:10:06 +1100 | [diff] [blame] | 3506 | /* |
| 3507 | * Unlike the longest extent available in an AG, we don't track |
| 3508 | * the length of an AG's shortest extent. |
| 3509 | * XFS_ERRTAG_BMAP_ALLOC_MINLEN_EXTENT is a debug only knob and |
| 3510 | * hence we can afford to start traversing from the 0th AG since |
| 3511 | * we need not be concerned about a drop in performance in |
| 3512 | * "debug only" code paths. |
| 3513 | */ |
| 3514 | ap->blkno = XFS_AGB_TO_FSB(mp, 0, 0); |
Chandan Babu R | 3015196 | 2021-01-22 16:48:17 -0800 | [diff] [blame] | 3515 | |
Chandan Babu R | 3015196 | 2021-01-22 16:48:17 -0800 | [diff] [blame] | 3516 | args.oinfo = XFS_RMAP_OINFO_SKIP_UPDATE; |
Chandan Babu R | 6e8bd39 | 2021-03-25 11:55:10 -0700 | [diff] [blame] | 3517 | args.minlen = args.maxlen = ap->minlen; |
| 3518 | args.total = ap->total; |
Chandan Babu R | 3015196 | 2021-01-22 16:48:17 -0800 | [diff] [blame] | 3519 | |
| 3520 | args.alignment = 1; |
| 3521 | args.minalignslop = 0; |
| 3522 | |
| 3523 | args.minleft = ap->minleft; |
| 3524 | args.wasdel = ap->wasdel; |
| 3525 | args.resv = XFS_AG_RESV_NONE; |
| 3526 | args.datatype = ap->datatype; |
| 3527 | |
Dave Chinner | 319c9e8 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3528 | error = xfs_alloc_vextent_first_ag(&args, ap->blkno); |
Chandan Babu R | 3015196 | 2021-01-22 16:48:17 -0800 | [diff] [blame] | 3529 | if (error) |
| 3530 | return error; |
| 3531 | |
| 3532 | if (args.fsbno != NULLFSBLOCK) { |
| 3533 | xfs_bmap_process_allocated_extent(ap, &args, orig_offset, |
| 3534 | orig_length); |
| 3535 | } else { |
| 3536 | ap->blkno = NULLFSBLOCK; |
| 3537 | ap->length = 0; |
| 3538 | } |
| 3539 | |
| 3540 | return 0; |
| 3541 | } |
| 3542 | #else |
| 3543 | |
| 3544 | #define xfs_bmap_exact_minlen_extent_alloc(bma) (-EFSCORRUPTED) |
| 3545 | |
| 3546 | #endif |
| 3547 | |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3548 | /* |
| 3549 | * If we are not low on available data blocks and we are allocating at |
| 3550 | * EOF, optimise allocation for contiguous file extension and/or stripe |
| 3551 | * alignment of the new extent. |
| 3552 | * |
| 3553 | * NOTE: ap->aeof is only set if the allocation length is >= the |
| 3554 | * stripe unit and the allocation offset is at the end of file. |
| 3555 | */ |
| 3556 | static int |
| 3557 | xfs_bmap_btalloc_at_eof( |
| 3558 | struct xfs_bmalloca *ap, |
| 3559 | struct xfs_alloc_arg *args, |
| 3560 | xfs_extlen_t blen, |
Dave Chinner | 2a7f6d4 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3561 | int stripe_align, |
| 3562 | bool ag_only) |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3563 | { |
| 3564 | struct xfs_mount *mp = args->mp; |
Dave Chinner | f8f1ed1 | 2023-02-13 09:14:56 +1100 | [diff] [blame] | 3565 | struct xfs_perag *caller_pag = args->pag; |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3566 | int error; |
| 3567 | |
| 3568 | /* |
| 3569 | * If there are already extents in the file, try an exact EOF block |
| 3570 | * allocation to extend the file as a contiguous extent. If that fails, |
| 3571 | * or it's the first allocation in a file, just try for a stripe aligned |
| 3572 | * allocation. |
| 3573 | */ |
| 3574 | if (ap->offset) { |
| 3575 | xfs_extlen_t nextminlen = 0; |
| 3576 | |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3577 | /* |
| 3578 | * Compute the minlen+alignment for the next case. Set slop so |
| 3579 | * that the value of minlen+alignment+slop doesn't go up between |
| 3580 | * the calls. |
| 3581 | */ |
Dave Chinner | 230e8fe | 2023-02-13 09:14:54 +1100 | [diff] [blame] | 3582 | args->alignment = 1; |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3583 | if (blen > stripe_align && blen <= args->maxlen) |
| 3584 | nextminlen = blen - stripe_align; |
| 3585 | else |
| 3586 | nextminlen = args->minlen; |
| 3587 | if (nextminlen + stripe_align > args->minlen + 1) |
| 3588 | args->minalignslop = nextminlen + stripe_align - |
| 3589 | args->minlen - 1; |
| 3590 | else |
| 3591 | args->minalignslop = 0; |
| 3592 | |
Dave Chinner | f8f1ed1 | 2023-02-13 09:14:56 +1100 | [diff] [blame] | 3593 | if (!caller_pag) |
| 3594 | args->pag = xfs_perag_get(mp, XFS_FSB_TO_AGNO(mp, ap->blkno)); |
Dave Chinner | 5f36b2c | 2023-02-13 09:14:54 +1100 | [diff] [blame] | 3595 | error = xfs_alloc_vextent_exact_bno(args, ap->blkno); |
Darrick J. Wong | b82a5c4 | 2023-05-02 09:14:27 +1000 | [diff] [blame] | 3596 | if (!caller_pag) { |
Dave Chinner | f8f1ed1 | 2023-02-13 09:14:56 +1100 | [diff] [blame] | 3597 | xfs_perag_put(args->pag); |
Darrick J. Wong | b82a5c4 | 2023-05-02 09:14:27 +1000 | [diff] [blame] | 3598 | args->pag = NULL; |
| 3599 | } |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3600 | if (error) |
| 3601 | return error; |
| 3602 | |
| 3603 | if (args->fsbno != NULLFSBLOCK) |
| 3604 | return 0; |
| 3605 | /* |
| 3606 | * Exact allocation failed. Reset to try an aligned allocation |
| 3607 | * according to the original allocation specification. |
| 3608 | */ |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3609 | args->alignment = stripe_align; |
| 3610 | args->minlen = nextminlen; |
| 3611 | args->minalignslop = 0; |
| 3612 | } else { |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3613 | /* |
| 3614 | * Adjust minlen to try and preserve alignment if we |
| 3615 | * can't guarantee an aligned maxlen extent. |
| 3616 | */ |
Dave Chinner | 230e8fe | 2023-02-13 09:14:54 +1100 | [diff] [blame] | 3617 | args->alignment = stripe_align; |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3618 | if (blen > args->alignment && |
| 3619 | blen <= args->maxlen + args->alignment) |
| 3620 | args->minlen = blen - args->alignment; |
| 3621 | args->minalignslop = 0; |
| 3622 | } |
| 3623 | |
Dave Chinner | f8f1ed1 | 2023-02-13 09:14:56 +1100 | [diff] [blame] | 3624 | if (ag_only) { |
Dave Chinner | db4710f | 2023-02-13 09:14:54 +1100 | [diff] [blame] | 3625 | error = xfs_alloc_vextent_near_bno(args, ap->blkno); |
Dave Chinner | f8f1ed1 | 2023-02-13 09:14:56 +1100 | [diff] [blame] | 3626 | } else { |
| 3627 | args->pag = NULL; |
Dave Chinner | 2a7f6d4 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3628 | error = xfs_alloc_vextent_start_ag(args, ap->blkno); |
Dave Chinner | f8f1ed1 | 2023-02-13 09:14:56 +1100 | [diff] [blame] | 3629 | ASSERT(args->pag == NULL); |
| 3630 | args->pag = caller_pag; |
| 3631 | } |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3632 | if (error) |
| 3633 | return error; |
| 3634 | |
| 3635 | if (args->fsbno != NULLFSBLOCK) |
| 3636 | return 0; |
| 3637 | |
| 3638 | /* |
| 3639 | * Allocation failed, so turn return the allocation args to their |
| 3640 | * original non-aligned state so the caller can proceed on allocation |
| 3641 | * failure as if this function was never called. |
| 3642 | */ |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3643 | args->alignment = 1; |
| 3644 | return 0; |
| 3645 | } |
| 3646 | |
Dave Chinner | 89563e7 | 2023-02-13 09:14:54 +1100 | [diff] [blame] | 3647 | /* |
| 3648 | * We have failed multiple allocation attempts so now are in a low space |
| 3649 | * allocation situation. Try a locality first full filesystem minimum length |
| 3650 | * allocation whilst still maintaining necessary total block reservation |
| 3651 | * requirements. |
| 3652 | * |
| 3653 | * If that fails, we are now critically low on space, so perform a last resort |
| 3654 | * allocation attempt: no reserve, no locality, blocking, minimum length, full |
| 3655 | * filesystem free space scan. We also indicate to future allocations in this |
| 3656 | * transaction that we are critically low on space so they don't waste time on |
| 3657 | * allocation modes that are unlikely to succeed. |
| 3658 | */ |
Dave Chinner | 8f7747a | 2023-02-13 09:14:55 +1100 | [diff] [blame] | 3659 | int |
Dave Chinner | 89563e7 | 2023-02-13 09:14:54 +1100 | [diff] [blame] | 3660 | xfs_bmap_btalloc_low_space( |
| 3661 | struct xfs_bmalloca *ap, |
| 3662 | struct xfs_alloc_arg *args) |
| 3663 | { |
| 3664 | int error; |
| 3665 | |
| 3666 | if (args->minlen > ap->minlen) { |
| 3667 | args->minlen = ap->minlen; |
| 3668 | error = xfs_alloc_vextent_start_ag(args, ap->blkno); |
| 3669 | if (error || args->fsbno != NULLFSBLOCK) |
| 3670 | return error; |
| 3671 | } |
| 3672 | |
| 3673 | /* Last ditch attempt before failure is declared. */ |
| 3674 | args->total = ap->minlen; |
| 3675 | error = xfs_alloc_vextent_first_ag(args, 0); |
| 3676 | if (error) |
| 3677 | return error; |
| 3678 | ap->tp->t_flags |= XFS_TRANS_LOWMODE; |
| 3679 | return 0; |
| 3680 | } |
| 3681 | |
| 3682 | static int |
| 3683 | xfs_bmap_btalloc_filestreams( |
| 3684 | struct xfs_bmalloca *ap, |
| 3685 | struct xfs_alloc_arg *args, |
| 3686 | int stripe_align) |
| 3687 | { |
Dave Chinner | 89563e7 | 2023-02-13 09:14:54 +1100 | [diff] [blame] | 3688 | xfs_extlen_t blen = 0; |
Dave Chinner | f8f1ed1 | 2023-02-13 09:14:56 +1100 | [diff] [blame] | 3689 | int error = 0; |
Dave Chinner | 89563e7 | 2023-02-13 09:14:54 +1100 | [diff] [blame] | 3690 | |
Dave Chinner | 89563e7 | 2023-02-13 09:14:54 +1100 | [diff] [blame] | 3691 | |
Dave Chinner | 8f7747a | 2023-02-13 09:14:55 +1100 | [diff] [blame] | 3692 | error = xfs_filestream_select_ag(ap, args, &blen); |
Dave Chinner | 89563e7 | 2023-02-13 09:14:54 +1100 | [diff] [blame] | 3693 | if (error) |
| 3694 | return error; |
Dave Chinner | f8f1ed1 | 2023-02-13 09:14:56 +1100 | [diff] [blame] | 3695 | ASSERT(args->pag); |
Dave Chinner | 89563e7 | 2023-02-13 09:14:54 +1100 | [diff] [blame] | 3696 | |
Dave Chinner | 8f7747a | 2023-02-13 09:14:55 +1100 | [diff] [blame] | 3697 | /* |
| 3698 | * If we are in low space mode, then optimal allocation will fail so |
| 3699 | * prepare for minimal allocation and jump to the low space algorithm |
| 3700 | * immediately. |
| 3701 | */ |
| 3702 | if (ap->tp->t_flags & XFS_TRANS_LOWMODE) { |
| 3703 | args->minlen = ap->minlen; |
Dave Chinner | f8f1ed1 | 2023-02-13 09:14:56 +1100 | [diff] [blame] | 3704 | ASSERT(args->fsbno == NULLFSBLOCK); |
Dave Chinner | 8f7747a | 2023-02-13 09:14:55 +1100 | [diff] [blame] | 3705 | goto out_low_space; |
| 3706 | } |
| 3707 | |
| 3708 | args->minlen = xfs_bmap_select_minlen(ap, args, blen); |
Dave Chinner | f8f1ed1 | 2023-02-13 09:14:56 +1100 | [diff] [blame] | 3709 | if (ap->aeof) |
Dave Chinner | 89563e7 | 2023-02-13 09:14:54 +1100 | [diff] [blame] | 3710 | error = xfs_bmap_btalloc_at_eof(ap, args, blen, stripe_align, |
| 3711 | true); |
Dave Chinner | 89563e7 | 2023-02-13 09:14:54 +1100 | [diff] [blame] | 3712 | |
Dave Chinner | f8f1ed1 | 2023-02-13 09:14:56 +1100 | [diff] [blame] | 3713 | if (!error && args->fsbno == NULLFSBLOCK) |
| 3714 | error = xfs_alloc_vextent_near_bno(args, ap->blkno); |
| 3715 | |
| 3716 | out_low_space: |
| 3717 | /* |
| 3718 | * We are now done with the perag reference for the filestreams |
| 3719 | * association provided by xfs_filestream_select_ag(). Release it now as |
| 3720 | * we've either succeeded, had a fatal error or we are out of space and |
| 3721 | * need to do a full filesystem scan for free space which will take it's |
| 3722 | * own references. |
| 3723 | */ |
| 3724 | xfs_perag_rele(args->pag); |
| 3725 | args->pag = NULL; |
Dave Chinner | 89563e7 | 2023-02-13 09:14:54 +1100 | [diff] [blame] | 3726 | if (error || args->fsbno != NULLFSBLOCK) |
| 3727 | return error; |
| 3728 | |
| 3729 | return xfs_bmap_btalloc_low_space(ap, args); |
| 3730 | } |
| 3731 | |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3732 | static int |
| 3733 | xfs_bmap_btalloc_best_length( |
| 3734 | struct xfs_bmalloca *ap, |
| 3735 | struct xfs_alloc_arg *args, |
| 3736 | int stripe_align) |
| 3737 | { |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3738 | xfs_extlen_t blen = 0; |
| 3739 | int error; |
| 3740 | |
Dave Chinner | 89563e7 | 2023-02-13 09:14:54 +1100 | [diff] [blame] | 3741 | ap->blkno = XFS_INO_TO_FSB(args->mp, ap->ip->i_ino); |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3742 | xfs_bmap_adjacent(ap); |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3743 | |
| 3744 | /* |
| 3745 | * Search for an allocation group with a single extent large enough for |
| 3746 | * the request. If one isn't found, then adjust the minimum allocation |
| 3747 | * size to the largest space found. |
| 3748 | */ |
Dave Chinner | 89563e7 | 2023-02-13 09:14:54 +1100 | [diff] [blame] | 3749 | error = xfs_bmap_btalloc_select_lengths(ap, args, &blen); |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3750 | if (error) |
| 3751 | return error; |
| 3752 | |
| 3753 | /* |
| 3754 | * Don't attempt optimal EOF allocation if previous allocations barely |
| 3755 | * succeeded due to being near ENOSPC. It is highly unlikely we'll get |
| 3756 | * optimal or even aligned allocations in this case, so don't waste time |
| 3757 | * trying. |
| 3758 | */ |
| 3759 | if (ap->aeof && !(ap->tp->t_flags & XFS_TRANS_LOWMODE)) { |
Dave Chinner | 2a7f6d4 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3760 | error = xfs_bmap_btalloc_at_eof(ap, args, blen, stripe_align, |
Dave Chinner | 89563e7 | 2023-02-13 09:14:54 +1100 | [diff] [blame] | 3761 | false); |
| 3762 | if (error || args->fsbno != NULLFSBLOCK) |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3763 | return error; |
| 3764 | } |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3765 | |
Dave Chinner | 89563e7 | 2023-02-13 09:14:54 +1100 | [diff] [blame] | 3766 | error = xfs_alloc_vextent_start_ag(args, ap->blkno); |
| 3767 | if (error || args->fsbno != NULLFSBLOCK) |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3768 | return error; |
Dave Chinner | 89563e7 | 2023-02-13 09:14:54 +1100 | [diff] [blame] | 3769 | |
| 3770 | return xfs_bmap_btalloc_low_space(ap, args); |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3771 | } |
| 3772 | |
| 3773 | static int |
Nathan Scott | a365bdd | 2006-03-14 13:34:16 +1100 | [diff] [blame] | 3774 | xfs_bmap_btalloc( |
Chandan Babu R | 3015196 | 2021-01-22 16:48:17 -0800 | [diff] [blame] | 3775 | struct xfs_bmalloca *ap) |
Nathan Scott | a365bdd | 2006-03-14 13:34:16 +1100 | [diff] [blame] | 3776 | { |
Chandan Babu R | 3015196 | 2021-01-22 16:48:17 -0800 | [diff] [blame] | 3777 | struct xfs_mount *mp = ap->ip->i_mount; |
Dave Chinner | 8584332 | 2023-02-13 09:14:53 +1100 | [diff] [blame] | 3778 | struct xfs_alloc_arg args = { |
| 3779 | .tp = ap->tp, |
| 3780 | .mp = mp, |
| 3781 | .fsbno = NULLFSBLOCK, |
| 3782 | .oinfo = XFS_RMAP_OINFO_SKIP_UPDATE, |
| 3783 | .minleft = ap->minleft, |
| 3784 | .wasdel = ap->wasdel, |
| 3785 | .resv = XFS_AG_RESV_NONE, |
| 3786 | .datatype = ap->datatype, |
| 3787 | .alignment = 1, |
| 3788 | .minalignslop = 0, |
| 3789 | }; |
Chandan Babu R | 3015196 | 2021-01-22 16:48:17 -0800 | [diff] [blame] | 3790 | xfs_fileoff_t orig_offset; |
| 3791 | xfs_extlen_t orig_length; |
Chandan Babu R | 3015196 | 2021-01-22 16:48:17 -0800 | [diff] [blame] | 3792 | int error; |
| 3793 | int stripe_align; |
Nathan Scott | a365bdd | 2006-03-14 13:34:16 +1100 | [diff] [blame] | 3794 | |
Dave Chinner | a99ebf4 | 2011-12-01 11:24:20 +0000 | [diff] [blame] | 3795 | ASSERT(ap->length); |
Darrick J. Wong | 6d8a45c | 2018-01-19 17:47:36 -0800 | [diff] [blame] | 3796 | orig_offset = ap->offset; |
| 3797 | orig_length = ap->length; |
Dave Chinner | a99ebf4 | 2011-12-01 11:24:20 +0000 | [diff] [blame] | 3798 | |
Chandan Babu R | 0961fdd | 2021-01-22 16:48:16 -0800 | [diff] [blame] | 3799 | stripe_align = xfs_bmap_compute_alignments(ap, &args); |
Dave Chinner | 33177f05 | 2013-12-12 16:34:36 +1100 | [diff] [blame] | 3800 | |
Dave Chinner | 14b064c | 2011-01-27 12:16:28 +1100 | [diff] [blame] | 3801 | /* Trim the allocation back to the maximum an AG can fit. */ |
Dave Chinner | 9bb54cb | 2018-06-07 07:54:02 -0700 | [diff] [blame] | 3802 | args.maxlen = min(ap->length, mp->m_ag_max_usable); |
Dave Chinner | 36b6ad2 | 2023-02-11 04:10:06 +1100 | [diff] [blame] | 3803 | |
Dave Chinner | 89563e7 | 2023-02-13 09:14:54 +1100 | [diff] [blame] | 3804 | if ((ap->datatype & XFS_ALLOC_USERDATA) && |
| 3805 | xfs_inode_is_filestream(ap->ip)) |
| 3806 | error = xfs_bmap_btalloc_filestreams(ap, &args, stripe_align); |
| 3807 | else |
| 3808 | error = xfs_bmap_btalloc_best_length(ap, &args, stripe_align); |
Dave Chinner | 36b6ad2 | 2023-02-11 04:10:06 +1100 | [diff] [blame] | 3809 | if (error) |
| 3810 | return error; |
Chandan Babu R | 0961fdd | 2021-01-22 16:48:16 -0800 | [diff] [blame] | 3811 | |
Chandan Babu R | 07c72e5 | 2021-01-22 16:48:17 -0800 | [diff] [blame] | 3812 | if (args.fsbno != NULLFSBLOCK) { |
| 3813 | xfs_bmap_process_allocated_extent(ap, &args, orig_offset, |
| 3814 | orig_length); |
Nathan Scott | a365bdd | 2006-03-14 13:34:16 +1100 | [diff] [blame] | 3815 | } else { |
Dave Chinner | 3a75667 | 2011-09-18 20:40:58 +0000 | [diff] [blame] | 3816 | ap->blkno = NULLFSBLOCK; |
| 3817 | ap->length = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3818 | } |
| 3819 | return 0; |
Nathan Scott | a365bdd | 2006-03-14 13:34:16 +1100 | [diff] [blame] | 3820 | } |
| 3821 | |
Darrick J. Wong | 0a0af28 | 2016-10-20 15:51:50 +1100 | [diff] [blame] | 3822 | /* Trim extent to fit a logical block range. */ |
| 3823 | void |
| 3824 | xfs_trim_extent( |
| 3825 | struct xfs_bmbt_irec *irec, |
| 3826 | xfs_fileoff_t bno, |
| 3827 | xfs_filblks_t len) |
| 3828 | { |
| 3829 | xfs_fileoff_t distance; |
| 3830 | xfs_fileoff_t end = bno + len; |
| 3831 | |
| 3832 | if (irec->br_startoff + irec->br_blockcount <= bno || |
| 3833 | irec->br_startoff >= end) { |
| 3834 | irec->br_blockcount = 0; |
| 3835 | return; |
| 3836 | } |
| 3837 | |
| 3838 | if (irec->br_startoff < bno) { |
| 3839 | distance = bno - irec->br_startoff; |
| 3840 | if (isnullstartblock(irec->br_startblock)) |
| 3841 | irec->br_startblock = DELAYSTARTBLOCK; |
| 3842 | if (irec->br_startblock != DELAYSTARTBLOCK && |
| 3843 | irec->br_startblock != HOLESTARTBLOCK) |
| 3844 | irec->br_startblock += distance; |
| 3845 | irec->br_startoff += distance; |
| 3846 | irec->br_blockcount -= distance; |
| 3847 | } |
| 3848 | |
| 3849 | if (end < irec->br_startoff + irec->br_blockcount) { |
| 3850 | distance = irec->br_startoff + irec->br_blockcount - end; |
| 3851 | irec->br_blockcount -= distance; |
| 3852 | } |
| 3853 | } |
| 3854 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3855 | /* |
Dave Chinner | aef9a89 | 2011-09-18 20:40:44 +0000 | [diff] [blame] | 3856 | * Trim the returned map to the required bounds |
| 3857 | */ |
| 3858 | STATIC void |
| 3859 | xfs_bmapi_trim_map( |
| 3860 | struct xfs_bmbt_irec *mval, |
| 3861 | struct xfs_bmbt_irec *got, |
| 3862 | xfs_fileoff_t *bno, |
| 3863 | xfs_filblks_t len, |
| 3864 | xfs_fileoff_t obno, |
| 3865 | xfs_fileoff_t end, |
| 3866 | int n, |
Dave Chinner | e7d410a | 2022-04-21 10:46:09 +1000 | [diff] [blame] | 3867 | uint32_t flags) |
Dave Chinner | aef9a89 | 2011-09-18 20:40:44 +0000 | [diff] [blame] | 3868 | { |
| 3869 | if ((flags & XFS_BMAPI_ENTIRE) || |
| 3870 | got->br_startoff + got->br_blockcount <= obno) { |
| 3871 | *mval = *got; |
| 3872 | if (isnullstartblock(got->br_startblock)) |
| 3873 | mval->br_startblock = DELAYSTARTBLOCK; |
| 3874 | return; |
| 3875 | } |
| 3876 | |
| 3877 | if (obno > *bno) |
| 3878 | *bno = obno; |
| 3879 | ASSERT((*bno >= obno) || (n == 0)); |
| 3880 | ASSERT(*bno < end); |
| 3881 | mval->br_startoff = *bno; |
| 3882 | if (isnullstartblock(got->br_startblock)) |
| 3883 | mval->br_startblock = DELAYSTARTBLOCK; |
| 3884 | else |
| 3885 | mval->br_startblock = got->br_startblock + |
| 3886 | (*bno - got->br_startoff); |
| 3887 | /* |
| 3888 | * Return the minimum of what we got and what we asked for for |
| 3889 | * the length. We can use the len variable here because it is |
| 3890 | * modified below and we could have been there before coming |
| 3891 | * here if the first part of the allocation didn't overlap what |
| 3892 | * was asked for. |
| 3893 | */ |
| 3894 | mval->br_blockcount = XFS_FILBLKS_MIN(end - *bno, |
| 3895 | got->br_blockcount - (*bno - got->br_startoff)); |
| 3896 | mval->br_state = got->br_state; |
| 3897 | ASSERT(mval->br_blockcount <= len); |
| 3898 | return; |
| 3899 | } |
| 3900 | |
| 3901 | /* |
| 3902 | * Update and validate the extent map to return |
| 3903 | */ |
| 3904 | STATIC void |
| 3905 | xfs_bmapi_update_map( |
| 3906 | struct xfs_bmbt_irec **map, |
| 3907 | xfs_fileoff_t *bno, |
| 3908 | xfs_filblks_t *len, |
| 3909 | xfs_fileoff_t obno, |
| 3910 | xfs_fileoff_t end, |
| 3911 | int *n, |
Dave Chinner | e7d410a | 2022-04-21 10:46:09 +1000 | [diff] [blame] | 3912 | uint32_t flags) |
Dave Chinner | aef9a89 | 2011-09-18 20:40:44 +0000 | [diff] [blame] | 3913 | { |
| 3914 | xfs_bmbt_irec_t *mval = *map; |
| 3915 | |
| 3916 | ASSERT((flags & XFS_BMAPI_ENTIRE) || |
| 3917 | ((mval->br_startoff + mval->br_blockcount) <= end)); |
| 3918 | ASSERT((flags & XFS_BMAPI_ENTIRE) || (mval->br_blockcount <= *len) || |
| 3919 | (mval->br_startoff < obno)); |
| 3920 | |
| 3921 | *bno = mval->br_startoff + mval->br_blockcount; |
| 3922 | *len = end - *bno; |
| 3923 | if (*n > 0 && mval->br_startoff == mval[-1].br_startoff) { |
| 3924 | /* update previous map with new information */ |
| 3925 | ASSERT(mval->br_startblock == mval[-1].br_startblock); |
| 3926 | ASSERT(mval->br_blockcount > mval[-1].br_blockcount); |
| 3927 | ASSERT(mval->br_state == mval[-1].br_state); |
| 3928 | mval[-1].br_blockcount = mval->br_blockcount; |
| 3929 | mval[-1].br_state = mval->br_state; |
| 3930 | } else if (*n > 0 && mval->br_startblock != DELAYSTARTBLOCK && |
| 3931 | mval[-1].br_startblock != DELAYSTARTBLOCK && |
| 3932 | mval[-1].br_startblock != HOLESTARTBLOCK && |
| 3933 | mval->br_startblock == mval[-1].br_startblock + |
| 3934 | mval[-1].br_blockcount && |
Christoph Hellwig | c3a2f9f | 2018-07-11 22:26:01 -0700 | [diff] [blame] | 3935 | mval[-1].br_state == mval->br_state) { |
Dave Chinner | aef9a89 | 2011-09-18 20:40:44 +0000 | [diff] [blame] | 3936 | ASSERT(mval->br_startoff == |
| 3937 | mval[-1].br_startoff + mval[-1].br_blockcount); |
| 3938 | mval[-1].br_blockcount += mval->br_blockcount; |
| 3939 | } else if (*n > 0 && |
| 3940 | mval->br_startblock == DELAYSTARTBLOCK && |
| 3941 | mval[-1].br_startblock == DELAYSTARTBLOCK && |
| 3942 | mval->br_startoff == |
| 3943 | mval[-1].br_startoff + mval[-1].br_blockcount) { |
| 3944 | mval[-1].br_blockcount += mval->br_blockcount; |
| 3945 | mval[-1].br_state = mval->br_state; |
| 3946 | } else if (!((*n == 0) && |
| 3947 | ((mval->br_startoff + mval->br_blockcount) <= |
| 3948 | obno))) { |
| 3949 | mval++; |
| 3950 | (*n)++; |
| 3951 | } |
| 3952 | *map = mval; |
| 3953 | } |
| 3954 | |
| 3955 | /* |
Dave Chinner | 5c8ed20 | 2011-09-18 20:40:45 +0000 | [diff] [blame] | 3956 | * Map file blocks to filesystem blocks without allocation. |
| 3957 | */ |
| 3958 | int |
| 3959 | xfs_bmapi_read( |
| 3960 | struct xfs_inode *ip, |
| 3961 | xfs_fileoff_t bno, |
| 3962 | xfs_filblks_t len, |
| 3963 | struct xfs_bmbt_irec *mval, |
| 3964 | int *nmap, |
Dave Chinner | e7d410a | 2022-04-21 10:46:09 +1000 | [diff] [blame] | 3965 | uint32_t flags) |
Dave Chinner | 5c8ed20 | 2011-09-18 20:40:45 +0000 | [diff] [blame] | 3966 | { |
| 3967 | struct xfs_mount *mp = ip->i_mount; |
Christoph Hellwig | 4b516ff | 2020-05-14 14:06:41 -0700 | [diff] [blame] | 3968 | int whichfork = xfs_bmapi_whichfork(flags); |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 3969 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Dave Chinner | 5c8ed20 | 2011-09-18 20:40:45 +0000 | [diff] [blame] | 3970 | struct xfs_bmbt_irec got; |
Dave Chinner | 5c8ed20 | 2011-09-18 20:40:45 +0000 | [diff] [blame] | 3971 | xfs_fileoff_t obno; |
| 3972 | xfs_fileoff_t end; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 3973 | struct xfs_iext_cursor icur; |
Dave Chinner | 5c8ed20 | 2011-09-18 20:40:45 +0000 | [diff] [blame] | 3974 | int error; |
Christoph Hellwig | 334f342 | 2016-11-24 11:39:43 +1100 | [diff] [blame] | 3975 | bool eof = false; |
Dave Chinner | 5c8ed20 | 2011-09-18 20:40:45 +0000 | [diff] [blame] | 3976 | int n = 0; |
Dave Chinner | 5c8ed20 | 2011-09-18 20:40:45 +0000 | [diff] [blame] | 3977 | |
| 3978 | ASSERT(*nmap >= 1); |
Christoph Hellwig | 1a1c57b | 2020-05-14 14:06:40 -0700 | [diff] [blame] | 3979 | ASSERT(!(flags & ~(XFS_BMAPI_ATTRFORK | XFS_BMAPI_ENTIRE))); |
Matthew Wilcox (Oracle) | 3fed24f | 2024-02-19 15:41:12 +0000 | [diff] [blame] | 3980 | xfs_assert_ilocked(ip, XFS_ILOCK_SHARED | XFS_ILOCK_EXCL); |
Dave Chinner | 5c8ed20 | 2011-09-18 20:40:45 +0000 | [diff] [blame] | 3981 | |
Darrick J. Wong | 1196f3f | 2024-02-22 12:31:51 -0800 | [diff] [blame] | 3982 | if (WARN_ON_ONCE(!ifp)) { |
| 3983 | xfs_bmap_mark_sick(ip, whichfork); |
Christoph Hellwig | 4b516ff | 2020-05-14 14:06:41 -0700 | [diff] [blame] | 3984 | return -EFSCORRUPTED; |
Darrick J. Wong | 1196f3f | 2024-02-22 12:31:51 -0800 | [diff] [blame] | 3985 | } |
Christoph Hellwig | 4b516ff | 2020-05-14 14:06:41 -0700 | [diff] [blame] | 3986 | |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 3987 | if (XFS_IS_CORRUPT(mp, !xfs_ifork_has_extents(ifp)) || |
Darrick J. Wong | 1196f3f | 2024-02-22 12:31:51 -0800 | [diff] [blame] | 3988 | XFS_TEST_ERROR(false, mp, XFS_ERRTAG_BMAPIFORMAT)) { |
| 3989 | xfs_bmap_mark_sick(ip, whichfork); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 3990 | return -EFSCORRUPTED; |
Darrick J. Wong | 1196f3f | 2024-02-22 12:31:51 -0800 | [diff] [blame] | 3991 | } |
Dave Chinner | 5c8ed20 | 2011-09-18 20:40:45 +0000 | [diff] [blame] | 3992 | |
Dave Chinner | 75c8c50f | 2021-08-18 18:46:53 -0700 | [diff] [blame] | 3993 | if (xfs_is_shutdown(mp)) |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 3994 | return -EIO; |
Dave Chinner | 5c8ed20 | 2011-09-18 20:40:45 +0000 | [diff] [blame] | 3995 | |
Bill O'Donnell | ff6d6af | 2015-10-12 18:21:22 +1100 | [diff] [blame] | 3996 | XFS_STATS_INC(mp, xs_blk_mapr); |
Dave Chinner | 5c8ed20 | 2011-09-18 20:40:45 +0000 | [diff] [blame] | 3997 | |
Christoph Hellwig | 862a804 | 2021-04-13 11:15:09 -0700 | [diff] [blame] | 3998 | error = xfs_iread_extents(NULL, ip, whichfork); |
| 3999 | if (error) |
| 4000 | return error; |
Dave Chinner | 5c8ed20 | 2011-09-18 20:40:45 +0000 | [diff] [blame] | 4001 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 4002 | if (!xfs_iext_lookup_extent(ip, ifp, bno, &icur, &got)) |
Christoph Hellwig | 334f342 | 2016-11-24 11:39:43 +1100 | [diff] [blame] | 4003 | eof = true; |
Dave Chinner | 5c8ed20 | 2011-09-18 20:40:45 +0000 | [diff] [blame] | 4004 | end = bno + len; |
| 4005 | obno = bno; |
| 4006 | |
| 4007 | while (bno < end && n < *nmap) { |
| 4008 | /* Reading past eof, act as though there's a hole up to end. */ |
| 4009 | if (eof) |
| 4010 | got.br_startoff = end; |
| 4011 | if (got.br_startoff > bno) { |
| 4012 | /* Reading in a hole. */ |
| 4013 | mval->br_startoff = bno; |
| 4014 | mval->br_startblock = HOLESTARTBLOCK; |
| 4015 | mval->br_blockcount = |
| 4016 | XFS_FILBLKS_MIN(len, got.br_startoff - bno); |
| 4017 | mval->br_state = XFS_EXT_NORM; |
| 4018 | bno += mval->br_blockcount; |
| 4019 | len -= mval->br_blockcount; |
| 4020 | mval++; |
| 4021 | n++; |
| 4022 | continue; |
| 4023 | } |
| 4024 | |
| 4025 | /* set up the extent map to return. */ |
| 4026 | xfs_bmapi_trim_map(mval, &got, &bno, len, obno, end, n, flags); |
| 4027 | xfs_bmapi_update_map(&mval, &bno, &len, obno, end, &n, flags); |
| 4028 | |
| 4029 | /* If we're done, stop now. */ |
| 4030 | if (bno >= end || n >= *nmap) |
| 4031 | break; |
| 4032 | |
| 4033 | /* Else go on to the next record. */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 4034 | if (!xfs_iext_next_extent(ifp, &icur, &got)) |
Christoph Hellwig | 334f342 | 2016-11-24 11:39:43 +1100 | [diff] [blame] | 4035 | eof = true; |
Dave Chinner | 5c8ed20 | 2011-09-18 20:40:45 +0000 | [diff] [blame] | 4036 | } |
| 4037 | *nmap = n; |
| 4038 | return 0; |
| 4039 | } |
| 4040 | |
Brian Foster | f65e6fad | 2017-03-08 09:58:08 -0800 | [diff] [blame] | 4041 | /* |
| 4042 | * Add a delayed allocation extent to an inode. Blocks are reserved from the |
| 4043 | * global pool and the extent inserted into the inode in-core extent tree. |
| 4044 | * |
| 4045 | * On entry, got refers to the first extent beyond the offset of the extent to |
| 4046 | * allocate or eof is specified if no such extent exists. On return, got refers |
| 4047 | * to the extent record that was inserted to the inode fork. |
| 4048 | * |
| 4049 | * Note that the allocated extent may have been merged with contiguous extents |
| 4050 | * during insertion into the inode fork. Thus, got does not reflect the current |
| 4051 | * state of the inode fork on return. If necessary, the caller can use lastx to |
| 4052 | * look up the updated record in the inode fork. |
| 4053 | */ |
Christoph Hellwig | 51446f5 | 2016-09-19 11:10:21 +1000 | [diff] [blame] | 4054 | int |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4055 | xfs_bmapi_reserve_delalloc( |
| 4056 | struct xfs_inode *ip, |
Darrick J. Wong | be51f81 | 2016-10-03 09:11:32 -0700 | [diff] [blame] | 4057 | int whichfork, |
Brian Foster | 974ae92 | 2016-11-28 14:57:42 +1100 | [diff] [blame] | 4058 | xfs_fileoff_t off, |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4059 | xfs_filblks_t len, |
Brian Foster | 974ae92 | 2016-11-28 14:57:42 +1100 | [diff] [blame] | 4060 | xfs_filblks_t prealloc, |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4061 | struct xfs_bmbt_irec *got, |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 4062 | struct xfs_iext_cursor *icur, |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4063 | int eof) |
| 4064 | { |
| 4065 | struct xfs_mount *mp = ip->i_mount; |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 4066 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4067 | xfs_extlen_t alen; |
| 4068 | xfs_extlen_t indlen; |
Christoph Hellwig | dc1b17a | 2024-04-22 13:20:13 +0200 | [diff] [blame] | 4069 | uint64_t fdblocks; |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4070 | int error; |
Darrick J. Wong | 288e1f6 | 2024-06-19 10:32:44 -0700 | [diff] [blame] | 4071 | xfs_fileoff_t aoff; |
| 4072 | bool use_cowextszhint = |
| 4073 | whichfork == XFS_COW_FORK && !prealloc; |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4074 | |
Darrick J. Wong | 288e1f6 | 2024-06-19 10:32:44 -0700 | [diff] [blame] | 4075 | retry: |
Brian Foster | 974ae92 | 2016-11-28 14:57:42 +1100 | [diff] [blame] | 4076 | /* |
| 4077 | * Cap the alloc length. Keep track of prealloc so we know whether to |
| 4078 | * tag the inode before we return. |
| 4079 | */ |
Darrick J. Wong | 288e1f6 | 2024-06-19 10:32:44 -0700 | [diff] [blame] | 4080 | aoff = off; |
Chandan Babu R | 95f0b95 | 2021-08-09 12:05:22 +0530 | [diff] [blame] | 4081 | alen = XFS_FILBLKS_MIN(len + prealloc, XFS_MAX_BMBT_EXTLEN); |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4082 | if (!eof) |
| 4083 | alen = XFS_FILBLKS_MIN(alen, got->br_startoff - aoff); |
Brian Foster | 974ae92 | 2016-11-28 14:57:42 +1100 | [diff] [blame] | 4084 | if (prealloc && alen >= len) |
| 4085 | prealloc = alen - len; |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4086 | |
Darrick J. Wong | 288e1f6 | 2024-06-19 10:32:44 -0700 | [diff] [blame] | 4087 | /* |
| 4088 | * If we're targetting the COW fork but aren't creating a speculative |
| 4089 | * posteof preallocation, try to expand the reservation to align with |
| 4090 | * the COW extent size hint if there's sufficient free space. |
| 4091 | * |
| 4092 | * Unlike the data fork, the CoW cancellation functions will free all |
| 4093 | * the reservations at inactivation, so we don't require that every |
| 4094 | * delalloc reservation have a dirty pagecache. |
| 4095 | */ |
| 4096 | if (use_cowextszhint) { |
Christoph Hellwig | 65c5f41 | 2016-11-24 11:39:44 +1100 | [diff] [blame] | 4097 | struct xfs_bmbt_irec prev; |
Shan Hai | 6ca3072 | 2018-01-23 13:56:11 -0800 | [diff] [blame] | 4098 | xfs_extlen_t extsz = xfs_get_cowextsz_hint(ip); |
Christoph Hellwig | 65c5f41 | 2016-11-24 11:39:44 +1100 | [diff] [blame] | 4099 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 4100 | if (!xfs_iext_peek_prev_extent(ifp, icur, &prev)) |
Christoph Hellwig | 65c5f41 | 2016-11-24 11:39:44 +1100 | [diff] [blame] | 4101 | prev.br_startoff = NULLFILEOFF; |
| 4102 | |
Shan Hai | 6ca3072 | 2018-01-23 13:56:11 -0800 | [diff] [blame] | 4103 | error = xfs_bmap_extsize_align(mp, got, &prev, extsz, 0, eof, |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4104 | 1, 0, &aoff, &alen); |
| 4105 | ASSERT(!error); |
| 4106 | } |
| 4107 | |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4108 | /* |
| 4109 | * Make a transaction-less quota reservation for delayed allocation |
| 4110 | * blocks. This number gets adjusted later. We return if we haven't |
| 4111 | * allocated blocks already inside this loop. |
| 4112 | */ |
Darrick J. Wong | 8554650 | 2021-01-22 16:48:34 -0800 | [diff] [blame] | 4113 | error = xfs_quota_reserve_blkres(ip, alen); |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4114 | if (error) |
Darrick J. Wong | 288e1f6 | 2024-06-19 10:32:44 -0700 | [diff] [blame] | 4115 | goto out; |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4116 | |
| 4117 | /* |
| 4118 | * Split changing sb for alen and indlen since they could be coming |
| 4119 | * from different places. |
| 4120 | */ |
| 4121 | indlen = (xfs_extlen_t)xfs_bmap_worst_indlen(ip, alen); |
| 4122 | ASSERT(indlen > 0); |
| 4123 | |
Christoph Hellwig | dc1b17a | 2024-04-22 13:20:13 +0200 | [diff] [blame] | 4124 | fdblocks = indlen; |
| 4125 | if (XFS_IS_REALTIME_INODE(ip)) { |
| 4126 | error = xfs_dec_frextents(mp, xfs_rtb_to_rtx(mp, alen)); |
| 4127 | if (error) |
| 4128 | goto out_unreserve_quota; |
| 4129 | } else { |
| 4130 | fdblocks += alen; |
| 4131 | } |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4132 | |
Christoph Hellwig | dc1b17a | 2024-04-22 13:20:13 +0200 | [diff] [blame] | 4133 | error = xfs_dec_fdblocks(mp, fdblocks, false); |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4134 | if (error) |
Christoph Hellwig | dc1b17a | 2024-04-22 13:20:13 +0200 | [diff] [blame] | 4135 | goto out_unreserve_frextents; |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4136 | |
| 4137 | ip->i_delayed_blks += alen; |
Christoph Hellwig | 7099bd0 | 2024-04-22 13:20:15 +0200 | [diff] [blame] | 4138 | xfs_mod_delalloc(ip, alen, indlen); |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4139 | |
| 4140 | got->br_startoff = aoff; |
| 4141 | got->br_startblock = nullstartblock(indlen); |
| 4142 | got->br_blockcount = alen; |
| 4143 | got->br_state = XFS_EXT_NORM; |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4144 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 4145 | xfs_bmap_add_extent_hole_delay(ip, whichfork, icur, got); |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4146 | |
Brian Foster | 974ae92 | 2016-11-28 14:57:42 +1100 | [diff] [blame] | 4147 | /* |
| 4148 | * Tag the inode if blocks were preallocated. Note that COW fork |
| 4149 | * preallocation can occur at the start or end of the extent, even when |
| 4150 | * prealloc == 0, so we must also check the aligned offset and length. |
| 4151 | */ |
| 4152 | if (whichfork == XFS_DATA_FORK && prealloc) |
| 4153 | xfs_inode_set_eofblocks_tag(ip); |
| 4154 | if (whichfork == XFS_COW_FORK && (prealloc || aoff < off || alen > len)) |
| 4155 | xfs_inode_set_cowblocks_tag(ip); |
| 4156 | |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4157 | return 0; |
| 4158 | |
Christoph Hellwig | dc1b17a | 2024-04-22 13:20:13 +0200 | [diff] [blame] | 4159 | out_unreserve_frextents: |
| 4160 | if (XFS_IS_REALTIME_INODE(ip)) |
| 4161 | xfs_add_frextents(mp, xfs_rtb_to_rtx(mp, alen)); |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4162 | out_unreserve_quota: |
| 4163 | if (XFS_IS_QUOTA_ON(mp)) |
Darrick J. Wong | 8554650 | 2021-01-22 16:48:34 -0800 | [diff] [blame] | 4164 | xfs_quota_unreserve_blkres(ip, alen); |
Darrick J. Wong | 288e1f6 | 2024-06-19 10:32:44 -0700 | [diff] [blame] | 4165 | out: |
| 4166 | if (error == -ENOSPC || error == -EDQUOT) { |
| 4167 | trace_xfs_delalloc_enospc(ip, off, len); |
| 4168 | |
| 4169 | if (prealloc || use_cowextszhint) { |
| 4170 | /* retry without any preallocation */ |
| 4171 | use_cowextszhint = false; |
| 4172 | prealloc = 0; |
| 4173 | goto retry; |
| 4174 | } |
| 4175 | } |
Christoph Hellwig | b64dfe4 | 2011-09-18 20:40:47 +0000 | [diff] [blame] | 4176 | return error; |
| 4177 | } |
| 4178 | |
Dave Chinner | cf11da9 | 2014-07-15 07:08:24 +1000 | [diff] [blame] | 4179 | static int |
Christoph Hellwig | be6cacb | 2019-10-30 12:24:59 -0700 | [diff] [blame] | 4180 | xfs_bmap_alloc_userdata( |
| 4181 | struct xfs_bmalloca *bma) |
| 4182 | { |
| 4183 | struct xfs_mount *mp = bma->ip->i_mount; |
| 4184 | int whichfork = xfs_bmapi_whichfork(bma->flags); |
| 4185 | int error; |
| 4186 | |
| 4187 | /* |
| 4188 | * Set the data type being allocated. For the data fork, the first data |
| 4189 | * in the file is treated differently to all other allocations. For the |
| 4190 | * attribute fork, we only need to ensure the allocated range is not on |
| 4191 | * the busy list. |
| 4192 | */ |
| 4193 | bma->datatype = XFS_ALLOC_NOBUSY; |
Darrick J. Wong | ddfdd53 | 2022-12-01 09:36:16 -0800 | [diff] [blame] | 4194 | if (whichfork == XFS_DATA_FORK || whichfork == XFS_COW_FORK) { |
Christoph Hellwig | c34d570 | 2019-10-30 12:25:00 -0700 | [diff] [blame] | 4195 | bma->datatype |= XFS_ALLOC_USERDATA; |
Christoph Hellwig | be6cacb | 2019-10-30 12:24:59 -0700 | [diff] [blame] | 4196 | if (bma->offset == 0) |
| 4197 | bma->datatype |= XFS_ALLOC_INITIAL_USER_DATA; |
Christoph Hellwig | be6cacb | 2019-10-30 12:24:59 -0700 | [diff] [blame] | 4198 | |
| 4199 | if (mp->m_dalign && bma->length >= mp->m_dalign) { |
| 4200 | error = xfs_bmap_isaeof(bma, whichfork); |
| 4201 | if (error) |
| 4202 | return error; |
| 4203 | } |
| 4204 | |
| 4205 | if (XFS_IS_REALTIME_INODE(bma->ip)) |
| 4206 | return xfs_bmap_rtalloc(bma); |
| 4207 | } |
| 4208 | |
Chandan Babu R | 3015196 | 2021-01-22 16:48:17 -0800 | [diff] [blame] | 4209 | if (unlikely(XFS_TEST_ERROR(false, mp, |
| 4210 | XFS_ERRTAG_BMAP_ALLOC_MINLEN_EXTENT))) |
| 4211 | return xfs_bmap_exact_minlen_extent_alloc(bma); |
| 4212 | |
Christoph Hellwig | be6cacb | 2019-10-30 12:24:59 -0700 | [diff] [blame] | 4213 | return xfs_bmap_btalloc(bma); |
| 4214 | } |
| 4215 | |
| 4216 | static int |
Dave Chinner | cf11da9 | 2014-07-15 07:08:24 +1000 | [diff] [blame] | 4217 | xfs_bmapi_allocate( |
Dave Chinner | e04426b | 2012-10-05 11:06:59 +1000 | [diff] [blame] | 4218 | struct xfs_bmalloca *bma) |
Dave Chinner | 7e47a4e | 2011-09-18 20:40:50 +0000 | [diff] [blame] | 4219 | { |
| 4220 | struct xfs_mount *mp = bma->ip->i_mount; |
Darrick J. Wong | 60b4984 | 2016-10-03 09:11:34 -0700 | [diff] [blame] | 4221 | int whichfork = xfs_bmapi_whichfork(bma->flags); |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 4222 | struct xfs_ifork *ifp = xfs_ifork_ptr(bma->ip, whichfork); |
Dave Chinner | 7e47a4e | 2011-09-18 20:40:50 +0000 | [diff] [blame] | 4223 | int error; |
Dave Chinner | 7e47a4e | 2011-09-18 20:40:50 +0000 | [diff] [blame] | 4224 | |
Dave Chinner | a99ebf4 | 2011-12-01 11:24:20 +0000 | [diff] [blame] | 4225 | ASSERT(bma->length > 0); |
Christoph Hellwig | 2a9b99d | 2024-04-29 08:15:25 +0200 | [diff] [blame] | 4226 | ASSERT(bma->length <= XFS_MAX_BMBT_EXTLEN); |
Dave Chinner | a99ebf4 | 2011-12-01 11:24:20 +0000 | [diff] [blame] | 4227 | |
Christoph Hellwig | be6cacb | 2019-10-30 12:24:59 -0700 | [diff] [blame] | 4228 | if (bma->flags & XFS_BMAPI_CONTIG) |
| 4229 | bma->minlen = bma->length; |
| 4230 | else |
| 4231 | bma->minlen = 1; |
Dave Chinner | 7e47a4e | 2011-09-18 20:40:50 +0000 | [diff] [blame] | 4232 | |
Chandan Babu R | 3015196 | 2021-01-22 16:48:17 -0800 | [diff] [blame] | 4233 | if (bma->flags & XFS_BMAPI_METADATA) { |
| 4234 | if (unlikely(XFS_TEST_ERROR(false, mp, |
| 4235 | XFS_ERRTAG_BMAP_ALLOC_MINLEN_EXTENT))) |
| 4236 | error = xfs_bmap_exact_minlen_extent_alloc(bma); |
| 4237 | else |
| 4238 | error = xfs_bmap_btalloc(bma); |
| 4239 | } else { |
Christoph Hellwig | be6cacb | 2019-10-30 12:24:59 -0700 | [diff] [blame] | 4240 | error = xfs_bmap_alloc_userdata(bma); |
Chandan Babu R | 3015196 | 2021-01-22 16:48:17 -0800 | [diff] [blame] | 4241 | } |
Christoph Hellwig | 6773da8 | 2024-04-29 08:15:21 +0200 | [diff] [blame] | 4242 | if (error) |
Dave Chinner | 7e47a4e | 2011-09-18 20:40:50 +0000 | [diff] [blame] | 4243 | return error; |
Christoph Hellwig | 6773da8 | 2024-04-29 08:15:21 +0200 | [diff] [blame] | 4244 | if (bma->blkno == NULLFSBLOCK) |
| 4245 | return -ENOSPC; |
Dave Chinner | 7e47a4e | 2011-09-18 20:40:50 +0000 | [diff] [blame] | 4246 | |
Christoph Hellwig | 04c609e | 2024-04-29 08:15:23 +0200 | [diff] [blame] | 4247 | if (WARN_ON_ONCE(!xfs_valid_startblock(bma->ip, bma->blkno))) { |
| 4248 | xfs_bmap_mark_sick(bma->ip, whichfork); |
| 4249 | return -EFSCORRUPTED; |
| 4250 | } |
| 4251 | |
Christoph Hellwig | fd638f1 | 2019-10-30 12:25:00 -0700 | [diff] [blame] | 4252 | if (bma->flags & XFS_BMAPI_ZERO) { |
| 4253 | error = xfs_zero_extent(bma->ip, bma->blkno, bma->length); |
| 4254 | if (error) |
| 4255 | return error; |
| 4256 | } |
| 4257 | |
Christoph Hellwig | ac1e067 | 2021-04-13 11:15:11 -0700 | [diff] [blame] | 4258 | if (ifp->if_format == XFS_DINODE_FMT_BTREE && !bma->cur) |
Dave Chinner | 29c8d17a | 2011-09-18 20:41:00 +0000 | [diff] [blame] | 4259 | bma->cur = xfs_bmbt_init_cursor(mp, bma->tp, bma->ip, whichfork); |
Dave Chinner | 7e47a4e | 2011-09-18 20:40:50 +0000 | [diff] [blame] | 4260 | /* |
| 4261 | * Bump the number of extents we've allocated |
| 4262 | * in this call. |
| 4263 | */ |
Dave Chinner | e0c3da5 | 2011-09-18 20:41:01 +0000 | [diff] [blame] | 4264 | bma->nallocs++; |
Dave Chinner | 7e47a4e | 2011-09-18 20:40:50 +0000 | [diff] [blame] | 4265 | |
Christoph Hellwig | e9e66df | 2024-02-22 12:35:13 -0800 | [diff] [blame] | 4266 | if (bma->cur && bma->wasdel) |
| 4267 | bma->cur->bc_flags |= XFS_BTREE_BMBT_WASDEL; |
Dave Chinner | 7e47a4e | 2011-09-18 20:40:50 +0000 | [diff] [blame] | 4268 | |
Dave Chinner | 963c30c | 2011-09-18 20:40:59 +0000 | [diff] [blame] | 4269 | bma->got.br_startoff = bma->offset; |
| 4270 | bma->got.br_startblock = bma->blkno; |
| 4271 | bma->got.br_blockcount = bma->length; |
Dave Chinner | baf41a5 | 2011-09-18 20:40:56 +0000 | [diff] [blame] | 4272 | bma->got.br_state = XFS_EXT_NORM; |
Dave Chinner | 7e47a4e | 2011-09-18 20:40:50 +0000 | [diff] [blame] | 4273 | |
Darrick J. Wong | a5949d3 | 2020-05-23 09:43:31 -0700 | [diff] [blame] | 4274 | if (bma->flags & XFS_BMAPI_PREALLOC) |
Dave Chinner | baf41a5 | 2011-09-18 20:40:56 +0000 | [diff] [blame] | 4275 | bma->got.br_state = XFS_EXT_UNWRITTEN; |
Dave Chinner | 7e47a4e | 2011-09-18 20:40:50 +0000 | [diff] [blame] | 4276 | |
Christoph Hellwig | c653424 | 2011-09-18 20:41:05 +0000 | [diff] [blame] | 4277 | if (bma->wasdel) |
Darrick J. Wong | 60b4984 | 2016-10-03 09:11:34 -0700 | [diff] [blame] | 4278 | error = xfs_bmap_add_extent_delay_real(bma, whichfork); |
Christoph Hellwig | c653424 | 2011-09-18 20:41:05 +0000 | [diff] [blame] | 4279 | else |
Christoph Hellwig | 6d04558 | 2017-04-11 16:45:54 -0700 | [diff] [blame] | 4280 | error = xfs_bmap_add_extent_hole_real(bma->tp, bma->ip, |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 4281 | whichfork, &bma->icur, &bma->cur, &bma->got, |
Brian Foster | 92f9da3 | 2018-07-11 22:26:28 -0700 | [diff] [blame] | 4282 | &bma->logflags, bma->flags); |
Dave Chinner | 7e47a4e | 2011-09-18 20:40:50 +0000 | [diff] [blame] | 4283 | if (error) |
| 4284 | return error; |
| 4285 | |
| 4286 | /* |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 4287 | * Update our extent pointer, given that xfs_bmap_add_extent_delay_real |
| 4288 | * or xfs_bmap_add_extent_hole_real might have merged it into one of |
| 4289 | * the neighbouring ones. |
Dave Chinner | 7e47a4e | 2011-09-18 20:40:50 +0000 | [diff] [blame] | 4290 | */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 4291 | xfs_iext_get_extent(ifp, &bma->icur, &bma->got); |
Dave Chinner | 7e47a4e | 2011-09-18 20:40:50 +0000 | [diff] [blame] | 4292 | |
Dave Chinner | 963c30c | 2011-09-18 20:40:59 +0000 | [diff] [blame] | 4293 | ASSERT(bma->got.br_startoff <= bma->offset); |
| 4294 | ASSERT(bma->got.br_startoff + bma->got.br_blockcount >= |
| 4295 | bma->offset + bma->length); |
Dave Chinner | baf41a5 | 2011-09-18 20:40:56 +0000 | [diff] [blame] | 4296 | ASSERT(bma->got.br_state == XFS_EXT_NORM || |
| 4297 | bma->got.br_state == XFS_EXT_UNWRITTEN); |
Dave Chinner | 7e47a4e | 2011-09-18 20:40:50 +0000 | [diff] [blame] | 4298 | return 0; |
| 4299 | } |
| 4300 | |
Dave Chinner | b447fe5 | 2011-09-18 20:40:51 +0000 | [diff] [blame] | 4301 | STATIC int |
| 4302 | xfs_bmapi_convert_unwritten( |
| 4303 | struct xfs_bmalloca *bma, |
| 4304 | struct xfs_bmbt_irec *mval, |
| 4305 | xfs_filblks_t len, |
Dave Chinner | e7d410a | 2022-04-21 10:46:09 +1000 | [diff] [blame] | 4306 | uint32_t flags) |
Dave Chinner | b447fe5 | 2011-09-18 20:40:51 +0000 | [diff] [blame] | 4307 | { |
Darrick J. Wong | 3993bae | 2016-10-03 09:11:32 -0700 | [diff] [blame] | 4308 | int whichfork = xfs_bmapi_whichfork(flags); |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 4309 | struct xfs_ifork *ifp = xfs_ifork_ptr(bma->ip, whichfork); |
Christoph Hellwig | c315c90 | 2011-09-18 20:41:02 +0000 | [diff] [blame] | 4310 | int tmp_logflags = 0; |
Dave Chinner | b447fe5 | 2011-09-18 20:40:51 +0000 | [diff] [blame] | 4311 | int error; |
| 4312 | |
Dave Chinner | b447fe5 | 2011-09-18 20:40:51 +0000 | [diff] [blame] | 4313 | /* check if we need to do unwritten->real conversion */ |
| 4314 | if (mval->br_state == XFS_EXT_UNWRITTEN && |
| 4315 | (flags & XFS_BMAPI_PREALLOC)) |
| 4316 | return 0; |
| 4317 | |
| 4318 | /* check if we need to do real->unwritten conversion */ |
| 4319 | if (mval->br_state == XFS_EXT_NORM && |
| 4320 | (flags & (XFS_BMAPI_PREALLOC | XFS_BMAPI_CONVERT)) != |
| 4321 | (XFS_BMAPI_PREALLOC | XFS_BMAPI_CONVERT)) |
| 4322 | return 0; |
| 4323 | |
| 4324 | /* |
| 4325 | * Modify (by adding) the state flag, if writing. |
| 4326 | */ |
| 4327 | ASSERT(mval->br_blockcount <= len); |
Christoph Hellwig | ac1e067 | 2021-04-13 11:15:11 -0700 | [diff] [blame] | 4328 | if (ifp->if_format == XFS_DINODE_FMT_BTREE && !bma->cur) { |
Dave Chinner | 29c8d17a | 2011-09-18 20:41:00 +0000 | [diff] [blame] | 4329 | bma->cur = xfs_bmbt_init_cursor(bma->ip->i_mount, bma->tp, |
Dave Chinner | b447fe5 | 2011-09-18 20:40:51 +0000 | [diff] [blame] | 4330 | bma->ip, whichfork); |
Dave Chinner | b447fe5 | 2011-09-18 20:40:51 +0000 | [diff] [blame] | 4331 | } |
| 4332 | mval->br_state = (mval->br_state == XFS_EXT_UNWRITTEN) |
| 4333 | ? XFS_EXT_NORM : XFS_EXT_UNWRITTEN; |
| 4334 | |
Dave Chinner | 3fbbbea | 2015-11-03 12:27:22 +1100 | [diff] [blame] | 4335 | /* |
| 4336 | * Before insertion into the bmbt, zero the range being converted |
| 4337 | * if required. |
| 4338 | */ |
| 4339 | if (flags & XFS_BMAPI_ZERO) { |
| 4340 | error = xfs_zero_extent(bma->ip, mval->br_startblock, |
| 4341 | mval->br_blockcount); |
| 4342 | if (error) |
| 4343 | return error; |
| 4344 | } |
| 4345 | |
Darrick J. Wong | 05a630d | 2017-02-02 15:14:01 -0800 | [diff] [blame] | 4346 | error = xfs_bmap_add_extent_unwritten_real(bma->tp, bma->ip, whichfork, |
Brian Foster | 92f9da3 | 2018-07-11 22:26:28 -0700 | [diff] [blame] | 4347 | &bma->icur, &bma->cur, mval, &tmp_logflags); |
Brian Foster | 2e588a46 | 2015-06-01 07:15:23 +1000 | [diff] [blame] | 4348 | /* |
| 4349 | * Log the inode core unconditionally in the unwritten extent conversion |
| 4350 | * path because the conversion might not have done so (e.g., if the |
| 4351 | * extent count hasn't changed). We need to make sure the inode is dirty |
| 4352 | * in the transaction for the sake of fsync(), even if nothing has |
| 4353 | * changed, because fsync() will not force the log for this transaction |
| 4354 | * unless it sees the inode pinned. |
Darrick J. Wong | 05a630d | 2017-02-02 15:14:01 -0800 | [diff] [blame] | 4355 | * |
| 4356 | * Note: If we're only converting cow fork extents, there aren't |
| 4357 | * any on-disk updates to make, so we don't need to log anything. |
Brian Foster | 2e588a46 | 2015-06-01 07:15:23 +1000 | [diff] [blame] | 4358 | */ |
Darrick J. Wong | 05a630d | 2017-02-02 15:14:01 -0800 | [diff] [blame] | 4359 | if (whichfork != XFS_COW_FORK) |
| 4360 | bma->logflags |= tmp_logflags | XFS_ILOG_CORE; |
Dave Chinner | b447fe5 | 2011-09-18 20:40:51 +0000 | [diff] [blame] | 4361 | if (error) |
| 4362 | return error; |
| 4363 | |
| 4364 | /* |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 4365 | * Update our extent pointer, given that |
| 4366 | * xfs_bmap_add_extent_unwritten_real might have merged it into one |
| 4367 | * of the neighbouring ones. |
Dave Chinner | b447fe5 | 2011-09-18 20:40:51 +0000 | [diff] [blame] | 4368 | */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 4369 | xfs_iext_get_extent(ifp, &bma->icur, &bma->got); |
Dave Chinner | b447fe5 | 2011-09-18 20:40:51 +0000 | [diff] [blame] | 4370 | |
| 4371 | /* |
| 4372 | * We may have combined previously unwritten space with written space, |
| 4373 | * so generate another request. |
| 4374 | */ |
| 4375 | if (mval->br_blockcount < len) |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 4376 | return -EAGAIN; |
Dave Chinner | b447fe5 | 2011-09-18 20:40:51 +0000 | [diff] [blame] | 4377 | return 0; |
| 4378 | } |
| 4379 | |
Dave Chinner | d575384 | 2023-02-11 04:09:06 +1100 | [diff] [blame] | 4380 | xfs_extlen_t |
Christoph Hellwig | c8b5467 | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4381 | xfs_bmapi_minleft( |
| 4382 | struct xfs_trans *tp, |
| 4383 | struct xfs_inode *ip, |
| 4384 | int fork) |
| 4385 | { |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 4386 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, fork); |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 4387 | |
Dave Chinner | 692b6cd | 2023-02-11 04:11:06 +1100 | [diff] [blame] | 4388 | if (tp && tp->t_highest_agno != NULLAGNUMBER) |
Christoph Hellwig | c8b5467 | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4389 | return 0; |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 4390 | if (ifp->if_format != XFS_DINODE_FMT_BTREE) |
Christoph Hellwig | c8b5467 | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4391 | return 1; |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 4392 | return be16_to_cpu(ifp->if_broot->bb_level) + 1; |
Christoph Hellwig | c8b5467 | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4393 | } |
| 4394 | |
| 4395 | /* |
| 4396 | * Log whatever the flags say, even if error. Otherwise we might miss detecting |
| 4397 | * a case where the data is changed, there's an error, and it's not logged so we |
| 4398 | * don't shutdown when we should. Don't bother logging extents/btree changes if |
| 4399 | * we converted to the other format. |
| 4400 | */ |
| 4401 | static void |
| 4402 | xfs_bmapi_finish( |
| 4403 | struct xfs_bmalloca *bma, |
| 4404 | int whichfork, |
| 4405 | int error) |
| 4406 | { |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 4407 | struct xfs_ifork *ifp = xfs_ifork_ptr(bma->ip, whichfork); |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 4408 | |
Christoph Hellwig | c8b5467 | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4409 | if ((bma->logflags & xfs_ilog_fext(whichfork)) && |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 4410 | ifp->if_format != XFS_DINODE_FMT_EXTENTS) |
Christoph Hellwig | c8b5467 | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4411 | bma->logflags &= ~xfs_ilog_fext(whichfork); |
| 4412 | else if ((bma->logflags & xfs_ilog_fbroot(whichfork)) && |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 4413 | ifp->if_format != XFS_DINODE_FMT_BTREE) |
Christoph Hellwig | c8b5467 | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4414 | bma->logflags &= ~xfs_ilog_fbroot(whichfork); |
| 4415 | |
| 4416 | if (bma->logflags) |
| 4417 | xfs_trans_log_inode(bma->tp, bma->ip, bma->logflags); |
| 4418 | if (bma->cur) |
| 4419 | xfs_btree_del_cursor(bma->cur, error); |
| 4420 | } |
| 4421 | |
Christoph Hellwig | 4403280 | 2011-09-18 20:40:48 +0000 | [diff] [blame] | 4422 | /* |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4423 | * Map file blocks to filesystem blocks, and allocate blocks or convert the |
| 4424 | * extent state if necessary. Details behaviour is controlled by the flags |
| 4425 | * parameter. Only allocates blocks from a single allocation group, to avoid |
| 4426 | * locking problems. |
Christoph Hellwig | 6773da8 | 2024-04-29 08:15:21 +0200 | [diff] [blame] | 4427 | * |
| 4428 | * Returns 0 on success and places the extent mappings in mval. nmaps is used |
| 4429 | * as an input/output parameter where the caller specifies the maximum number |
| 4430 | * of mappings that may be returned and xfs_bmapi_write passes back the number |
| 4431 | * of mappings (including existing mappings) it found. |
| 4432 | * |
| 4433 | * Returns a negative error code on failure, including -ENOSPC when it could not |
| 4434 | * allocate any blocks and -ENOSR when it did allocate blocks to convert a |
| 4435 | * delalloc range, but those blocks were before the passed in range. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4436 | */ |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4437 | int |
| 4438 | xfs_bmapi_write( |
| 4439 | struct xfs_trans *tp, /* transaction pointer */ |
| 4440 | struct xfs_inode *ip, /* incore inode */ |
| 4441 | xfs_fileoff_t bno, /* starting file offs. mapped */ |
| 4442 | xfs_filblks_t len, /* length to map in file */ |
Dave Chinner | e7d410a | 2022-04-21 10:46:09 +1000 | [diff] [blame] | 4443 | uint32_t flags, /* XFS_BMAPI_... */ |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4444 | xfs_extlen_t total, /* total blocks needed */ |
| 4445 | struct xfs_bmbt_irec *mval, /* output: map values */ |
Brian Foster | 6e702a5 | 2018-07-11 22:26:12 -0700 | [diff] [blame] | 4446 | int *nmap) /* i/o: mval size/count */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4447 | { |
Darrick J. Wong | 4b0bce3 | 2019-03-19 08:16:22 -0700 | [diff] [blame] | 4448 | struct xfs_bmalloca bma = { |
| 4449 | .tp = tp, |
| 4450 | .ip = ip, |
| 4451 | .total = total, |
| 4452 | }; |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4453 | struct xfs_mount *mp = ip->i_mount; |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 4454 | int whichfork = xfs_bmapi_whichfork(flags); |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 4455 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4456 | xfs_fileoff_t end; /* end of mapped file region */ |
Christoph Hellwig | 2d58f6e | 2016-11-24 11:39:43 +1100 | [diff] [blame] | 4457 | bool eof = false; /* after the end of extents */ |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4458 | int error; /* error return */ |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4459 | int n; /* current extent index */ |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4460 | xfs_fileoff_t obno; /* old block number (offset) */ |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4461 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4462 | #ifdef DEBUG |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4463 | xfs_fileoff_t orig_bno; /* original block number value */ |
| 4464 | int orig_flags; /* original flags arg value */ |
| 4465 | xfs_filblks_t orig_len; /* original value of len arg */ |
| 4466 | struct xfs_bmbt_irec *orig_mval; /* original value of mval */ |
| 4467 | int orig_nmap; /* original value of *nmap */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4468 | |
| 4469 | orig_bno = bno; |
| 4470 | orig_len = len; |
| 4471 | orig_flags = flags; |
| 4472 | orig_mval = mval; |
| 4473 | orig_nmap = *nmap; |
| 4474 | #endif |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4475 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4476 | ASSERT(*nmap >= 1); |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4477 | ASSERT(*nmap <= XFS_BMAP_MAX_NMAP); |
Christoph Hellwig | 26b91c7 | 2019-02-18 09:38:48 -0800 | [diff] [blame] | 4478 | ASSERT(tp != NULL); |
Dave Chinner | a99ebf4 | 2011-12-01 11:24:20 +0000 | [diff] [blame] | 4479 | ASSERT(len > 0); |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 4480 | ASSERT(ifp->if_format != XFS_DINODE_FMT_LOCAL); |
Matthew Wilcox (Oracle) | 3fed24f | 2024-02-19 15:41:12 +0000 | [diff] [blame] | 4481 | xfs_assert_ilocked(ip, XFS_ILOCK_EXCL); |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4482 | ASSERT(!(flags & XFS_BMAPI_REMAP)); |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4483 | |
Dave Chinner | 3fbbbea | 2015-11-03 12:27:22 +1100 | [diff] [blame] | 4484 | /* zeroing is for currently only for data extents, not metadata */ |
| 4485 | ASSERT((flags & (XFS_BMAPI_METADATA | XFS_BMAPI_ZERO)) != |
| 4486 | (XFS_BMAPI_METADATA | XFS_BMAPI_ZERO)); |
| 4487 | /* |
| 4488 | * we can allocate unwritten extents or pre-zero allocated blocks, |
| 4489 | * but it makes no sense to do both at once. This would result in |
| 4490 | * zeroing the unwritten extent twice, but it still being an |
| 4491 | * unwritten extent.... |
| 4492 | */ |
| 4493 | ASSERT((flags & (XFS_BMAPI_PREALLOC | XFS_BMAPI_ZERO)) != |
| 4494 | (XFS_BMAPI_PREALLOC | XFS_BMAPI_ZERO)); |
| 4495 | |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 4496 | if (XFS_IS_CORRUPT(mp, !xfs_ifork_has_extents(ifp)) || |
Darrick J. Wong | a71895c | 2019-11-11 12:53:22 -0800 | [diff] [blame] | 4497 | XFS_TEST_ERROR(false, mp, XFS_ERRTAG_BMAPIFORMAT)) { |
Darrick J. Wong | 1196f3f | 2024-02-22 12:31:51 -0800 | [diff] [blame] | 4498 | xfs_bmap_mark_sick(ip, whichfork); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 4499 | return -EFSCORRUPTED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4500 | } |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4501 | |
Dave Chinner | 75c8c50f | 2021-08-18 18:46:53 -0700 | [diff] [blame] | 4502 | if (xfs_is_shutdown(mp)) |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 4503 | return -EIO; |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4504 | |
Bill O'Donnell | ff6d6af | 2015-10-12 18:21:22 +1100 | [diff] [blame] | 4505 | XFS_STATS_INC(mp, xs_blk_mapw); |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4506 | |
Christoph Hellwig | 862a804 | 2021-04-13 11:15:09 -0700 | [diff] [blame] | 4507 | error = xfs_iread_extents(tp, ip, whichfork); |
| 4508 | if (error) |
| 4509 | goto error0; |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4510 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 4511 | if (!xfs_iext_lookup_extent(ip, ifp, bno, &bma.icur, &bma.got)) |
Christoph Hellwig | 2d58f6e | 2016-11-24 11:39:43 +1100 | [diff] [blame] | 4512 | eof = true; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 4513 | if (!xfs_iext_peek_prev_extent(ifp, &bma.icur, &bma.prev)) |
Christoph Hellwig | 2d58f6e | 2016-11-24 11:39:43 +1100 | [diff] [blame] | 4514 | bma.prev.br_startoff = NULLFILEOFF; |
Christoph Hellwig | c8b5467 | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4515 | bma.minleft = xfs_bmapi_minleft(tp, ip, whichfork); |
Christoph Hellwig | b4e9181 | 2010-06-23 18:11:15 +1000 | [diff] [blame] | 4516 | |
Brian Foster | 627209f | 2019-02-01 09:14:23 -0800 | [diff] [blame] | 4517 | n = 0; |
| 4518 | end = bno + len; |
| 4519 | obno = bno; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4520 | while (bno < end && n < *nmap) { |
Christoph Hellwig | d2b3964 | 2017-01-20 09:31:54 -0800 | [diff] [blame] | 4521 | bool need_alloc = false, wasdelay = false; |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4522 | |
Darrick J. Wong | be78ff0 | 2018-01-16 19:03:59 -0800 | [diff] [blame] | 4523 | /* in hole or beyond EOF? */ |
Christoph Hellwig | d2b3964 | 2017-01-20 09:31:54 -0800 | [diff] [blame] | 4524 | if (eof || bma.got.br_startoff > bno) { |
Darrick J. Wong | be78ff0 | 2018-01-16 19:03:59 -0800 | [diff] [blame] | 4525 | /* |
| 4526 | * CoW fork conversions should /never/ hit EOF or |
| 4527 | * holes. There should always be something for us |
| 4528 | * to work on. |
| 4529 | */ |
| 4530 | ASSERT(!((flags & XFS_BMAPI_CONVERT) && |
| 4531 | (flags & XFS_BMAPI_COWFORK))); |
| 4532 | |
Christoph Hellwig | d8ae82e | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4533 | need_alloc = true; |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4534 | } else if (isnullstartblock(bma.got.br_startblock)) { |
| 4535 | wasdelay = true; |
Christoph Hellwig | d2b3964 | 2017-01-20 09:31:54 -0800 | [diff] [blame] | 4536 | } |
Darrick J. Wong | f65306e | 2016-10-03 09:11:27 -0700 | [diff] [blame] | 4537 | |
| 4538 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4539 | * First, deal with the hole before the allocated space |
| 4540 | * that we found, if any. |
| 4541 | */ |
Christoph Hellwig | 26b91c7 | 2019-02-18 09:38:48 -0800 | [diff] [blame] | 4542 | if (need_alloc || wasdelay) { |
Dave Chinner | 7e47a4e | 2011-09-18 20:40:50 +0000 | [diff] [blame] | 4543 | bma.eof = eof; |
| 4544 | bma.conv = !!(flags & XFS_BMAPI_CONVERT); |
| 4545 | bma.wasdel = wasdelay; |
Dave Chinner | 3a75667 | 2011-09-18 20:40:58 +0000 | [diff] [blame] | 4546 | bma.offset = bno; |
Dave Chinner | e04426b | 2012-10-05 11:06:59 +1000 | [diff] [blame] | 4547 | bma.flags = flags; |
Dave Chinner | 7e47a4e | 2011-09-18 20:40:50 +0000 | [diff] [blame] | 4548 | |
Dave Chinner | a99ebf4 | 2011-12-01 11:24:20 +0000 | [diff] [blame] | 4549 | /* |
| 4550 | * There's a 32/64 bit type mismatch between the |
| 4551 | * allocation length request (which can be 64 bits in |
| 4552 | * length) and the bma length request, which is |
| 4553 | * xfs_extlen_t and therefore 32 bits. Hence we have to |
Christoph Hellwig | 9d06960 | 2024-04-29 08:15:24 +0200 | [diff] [blame] | 4554 | * be careful and do the min() using the larger type to |
| 4555 | * avoid overflows. |
Dave Chinner | a99ebf4 | 2011-12-01 11:24:20 +0000 | [diff] [blame] | 4556 | */ |
Christoph Hellwig | 9d06960 | 2024-04-29 08:15:24 +0200 | [diff] [blame] | 4557 | bma.length = XFS_FILBLKS_MIN(len, XFS_MAX_BMBT_EXTLEN); |
Dave Chinner | a99ebf4 | 2011-12-01 11:24:20 +0000 | [diff] [blame] | 4558 | |
Christoph Hellwig | 2a9b99d | 2024-04-29 08:15:25 +0200 | [diff] [blame] | 4559 | if (wasdelay) { |
Christoph Hellwig | 21255af | 2024-04-29 08:15:28 +0200 | [diff] [blame] | 4560 | bma.length = XFS_FILBLKS_MIN(bma.length, |
| 4561 | bma.got.br_blockcount - |
| 4562 | (bno - bma.got.br_startoff)); |
Christoph Hellwig | 2a9b99d | 2024-04-29 08:15:25 +0200 | [diff] [blame] | 4563 | } else { |
| 4564 | if (!eof) |
| 4565 | bma.length = XFS_FILBLKS_MIN(bma.length, |
| 4566 | bma.got.br_startoff - bno); |
| 4567 | } |
| 4568 | |
Dave Chinner | a99ebf4 | 2011-12-01 11:24:20 +0000 | [diff] [blame] | 4569 | ASSERT(bma.length > 0); |
Dave Chinner | e04426b | 2012-10-05 11:06:59 +1000 | [diff] [blame] | 4570 | error = xfs_bmapi_allocate(&bma); |
Christoph Hellwig | 6773da8 | 2024-04-29 08:15:21 +0200 | [diff] [blame] | 4571 | if (error) { |
| 4572 | /* |
| 4573 | * If we already allocated space in a previous |
| 4574 | * iteration return what we go so far when |
| 4575 | * running out of space. |
| 4576 | */ |
| 4577 | if (error == -ENOSPC && bma.nallocs) |
| 4578 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4579 | goto error0; |
Christoph Hellwig | 6773da8 | 2024-04-29 08:15:21 +0200 | [diff] [blame] | 4580 | } |
Darrick J. Wong | 174edb0 | 2016-10-03 09:11:39 -0700 | [diff] [blame] | 4581 | |
| 4582 | /* |
| 4583 | * If this is a CoW allocation, record the data in |
| 4584 | * the refcount btree for orphan recovery. |
| 4585 | */ |
Darrick J. Wong | 74b4c5d | 2019-08-26 17:06:04 -0700 | [diff] [blame] | 4586 | if (whichfork == XFS_COW_FORK) |
| 4587 | xfs_refcount_alloc_cow_extent(tp, bma.blkno, |
| 4588 | bma.length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4589 | } |
Christoph Hellwig | 4403280 | 2011-09-18 20:40:48 +0000 | [diff] [blame] | 4590 | |
Dave Chinner | aef9a89 | 2011-09-18 20:40:44 +0000 | [diff] [blame] | 4591 | /* Deal with the allocated space we found. */ |
Dave Chinner | baf41a5 | 2011-09-18 20:40:56 +0000 | [diff] [blame] | 4592 | xfs_bmapi_trim_map(mval, &bma.got, &bno, len, obno, |
| 4593 | end, n, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4594 | |
Dave Chinner | b447fe5 | 2011-09-18 20:40:51 +0000 | [diff] [blame] | 4595 | /* Execute unwritten extent conversion if necessary */ |
Christoph Hellwig | c315c90 | 2011-09-18 20:41:02 +0000 | [diff] [blame] | 4596 | error = xfs_bmapi_convert_unwritten(&bma, mval, len, flags); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 4597 | if (error == -EAGAIN) |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4598 | continue; |
| 4599 | if (error) |
| 4600 | goto error0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4601 | |
Dave Chinner | aef9a89 | 2011-09-18 20:40:44 +0000 | [diff] [blame] | 4602 | /* update the extent map to return */ |
| 4603 | xfs_bmapi_update_map(&mval, &bno, &len, obno, end, &n, flags); |
| 4604 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4605 | /* |
| 4606 | * If we're done, stop now. Stop when we've allocated |
| 4607 | * XFS_BMAP_MAX_NMAP extents no matter what. Otherwise |
| 4608 | * the transaction may get too big. |
| 4609 | */ |
Dave Chinner | e0c3da5 | 2011-09-18 20:41:01 +0000 | [diff] [blame] | 4610 | if (bno >= end || n >= *nmap || bma.nallocs >= *nmap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4611 | break; |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4612 | |
| 4613 | /* Else go on to the next record. */ |
Dave Chinner | baf41a5 | 2011-09-18 20:40:56 +0000 | [diff] [blame] | 4614 | bma.prev = bma.got; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 4615 | if (!xfs_iext_next_extent(ifp, &bma.icur, &bma.got)) |
Christoph Hellwig | 2d58f6e | 2016-11-24 11:39:43 +1100 | [diff] [blame] | 4616 | eof = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4617 | } |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 4618 | |
Christoph Hellwig | b101e33 | 2019-02-15 08:02:47 -0800 | [diff] [blame] | 4619 | error = xfs_bmap_btree_to_extents(tp, ip, bma.cur, &bma.logflags, |
| 4620 | whichfork); |
| 4621 | if (error) |
| 4622 | goto error0; |
Christoph Hellwig | 8096b1e | 2011-12-18 20:00:07 +0000 | [diff] [blame] | 4623 | |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 4624 | ASSERT(ifp->if_format != XFS_DINODE_FMT_BTREE || |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 4625 | ifp->if_nextents > XFS_IFORK_MAXEXT(ip, whichfork)); |
Christoph Hellwig | c8b5467 | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4626 | xfs_bmapi_finish(&bma, whichfork, 0); |
| 4627 | xfs_bmap_validate_ret(orig_bno, orig_len, orig_flags, orig_mval, |
Christoph Hellwig | 6773da8 | 2024-04-29 08:15:21 +0200 | [diff] [blame] | 4628 | orig_nmap, n); |
| 4629 | |
| 4630 | /* |
| 4631 | * When converting delayed allocations, xfs_bmapi_allocate ignores |
| 4632 | * the passed in bno and always converts from the start of the found |
| 4633 | * delalloc extent. |
| 4634 | * |
| 4635 | * To avoid a successful return with *nmap set to 0, return the magic |
| 4636 | * -ENOSR error code for this particular case so that the caller can |
| 4637 | * handle it. |
| 4638 | */ |
| 4639 | if (!n) { |
| 4640 | ASSERT(bma.nallocs >= *nmap); |
| 4641 | return -ENOSR; |
| 4642 | } |
| 4643 | *nmap = n; |
Christoph Hellwig | c8b5467 | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4644 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4645 | error0: |
Christoph Hellwig | c8b5467 | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4646 | xfs_bmapi_finish(&bma, whichfork, error); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4647 | return error; |
| 4648 | } |
| 4649 | |
Brian Foster | 627209f | 2019-02-01 09:14:23 -0800 | [diff] [blame] | 4650 | /* |
| 4651 | * Convert an existing delalloc extent to real blocks based on file offset. This |
| 4652 | * attempts to allocate the entire delalloc extent and may require multiple |
| 4653 | * invocations to allocate the target offset if a large enough physical extent |
| 4654 | * is not available. |
| 4655 | */ |
Zhang Yi | 2e08371 | 2024-04-25 21:13:29 +0800 | [diff] [blame] | 4656 | static int |
| 4657 | xfs_bmapi_convert_one_delalloc( |
Brian Foster | 627209f | 2019-02-01 09:14:23 -0800 | [diff] [blame] | 4658 | struct xfs_inode *ip, |
Brian Foster | 627209f | 2019-02-01 09:14:23 -0800 | [diff] [blame] | 4659 | int whichfork, |
Christoph Hellwig | 4e087a3 | 2019-10-17 13:12:06 -0700 | [diff] [blame] | 4660 | xfs_off_t offset, |
| 4661 | struct iomap *iomap, |
Christoph Hellwig | 491ce61 | 2019-02-15 08:02:49 -0800 | [diff] [blame] | 4662 | unsigned int *seq) |
Brian Foster | 627209f | 2019-02-01 09:14:23 -0800 | [diff] [blame] | 4663 | { |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 4664 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Christoph Hellwig | 491ce61 | 2019-02-15 08:02:49 -0800 | [diff] [blame] | 4665 | struct xfs_mount *mp = ip->i_mount; |
Christoph Hellwig | 4e087a3 | 2019-10-17 13:12:06 -0700 | [diff] [blame] | 4666 | xfs_fileoff_t offset_fsb = XFS_B_TO_FSBT(mp, offset); |
Christoph Hellwig | d8ae82e | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4667 | struct xfs_bmalloca bma = { NULL }; |
Darrick J. Wong | af952ae | 2019-12-16 11:14:09 -0800 | [diff] [blame] | 4668 | uint16_t flags = 0; |
Christoph Hellwig | 491ce61 | 2019-02-15 08:02:49 -0800 | [diff] [blame] | 4669 | struct xfs_trans *tp; |
Brian Foster | 627209f | 2019-02-01 09:14:23 -0800 | [diff] [blame] | 4670 | int error; |
Brian Foster | 627209f | 2019-02-01 09:14:23 -0800 | [diff] [blame] | 4671 | |
Christoph Hellwig | 4e087a3 | 2019-10-17 13:12:06 -0700 | [diff] [blame] | 4672 | if (whichfork == XFS_COW_FORK) |
| 4673 | flags |= IOMAP_F_SHARED; |
| 4674 | |
Christoph Hellwig | 491ce61 | 2019-02-15 08:02:49 -0800 | [diff] [blame] | 4675 | /* |
| 4676 | * Space for the extent and indirect blocks was reserved when the |
| 4677 | * delalloc extent was created so there's no need to do so here. |
| 4678 | */ |
| 4679 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, 0, 0, |
| 4680 | XFS_TRANS_RESERVE, &tp); |
| 4681 | if (error) |
| 4682 | return error; |
| 4683 | |
| 4684 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
Chandan Babu R | 4f86bb4 | 2022-03-09 07:49:36 +0000 | [diff] [blame] | 4685 | xfs_trans_ijoin(tp, ip, 0); |
Chandan Babu R | 727e1ac | 2021-01-22 16:48:11 -0800 | [diff] [blame] | 4686 | |
Christoph Hellwig | 25576c5 | 2024-05-02 09:33:55 +0200 | [diff] [blame] | 4687 | error = xfs_iext_count_extend(tp, ip, whichfork, |
Chandan Babu R | 727e1ac | 2021-01-22 16:48:11 -0800 | [diff] [blame] | 4688 | XFS_IEXT_ADD_NOSPLIT_CNT); |
| 4689 | if (error) |
| 4690 | goto out_trans_cancel; |
| 4691 | |
Christoph Hellwig | d8ae82e | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4692 | if (!xfs_iext_lookup_extent(ip, ifp, offset_fsb, &bma.icur, &bma.got) || |
| 4693 | bma.got.br_startoff > offset_fsb) { |
| 4694 | /* |
| 4695 | * No extent found in the range we are trying to convert. This |
| 4696 | * should only happen for the COW fork, where another thread |
| 4697 | * might have moved the extent to the data fork in the meantime. |
| 4698 | */ |
| 4699 | WARN_ON_ONCE(whichfork != XFS_COW_FORK); |
Christoph Hellwig | 491ce61 | 2019-02-15 08:02:49 -0800 | [diff] [blame] | 4700 | error = -EAGAIN; |
| 4701 | goto out_trans_cancel; |
Christoph Hellwig | d8ae82e | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4702 | } |
Brian Foster | 627209f | 2019-02-01 09:14:23 -0800 | [diff] [blame] | 4703 | |
| 4704 | /* |
Christoph Hellwig | d8ae82e | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4705 | * If we find a real extent here we raced with another thread converting |
| 4706 | * the extent. Just return the real extent at this offset. |
Brian Foster | 627209f | 2019-02-01 09:14:23 -0800 | [diff] [blame] | 4707 | */ |
Christoph Hellwig | d8ae82e | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4708 | if (!isnullstartblock(bma.got.br_startblock)) { |
Dave Chinner | 304a68b | 2022-11-29 09:09:17 +1100 | [diff] [blame] | 4709 | xfs_bmbt_to_iomap(ip, iomap, &bma.got, 0, flags, |
| 4710 | xfs_iomap_inode_sequence(ip, flags)); |
Zhang Yi | fc8d0ba | 2024-04-25 21:13:28 +0800 | [diff] [blame] | 4711 | if (seq) |
| 4712 | *seq = READ_ONCE(ifp->if_seq); |
Christoph Hellwig | 491ce61 | 2019-02-15 08:02:49 -0800 | [diff] [blame] | 4713 | goto out_trans_cancel; |
Christoph Hellwig | d8ae82e | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4714 | } |
| 4715 | |
| 4716 | bma.tp = tp; |
| 4717 | bma.ip = ip; |
| 4718 | bma.wasdel = true; |
Christoph Hellwig | d8ae82e | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4719 | bma.minleft = xfs_bmapi_minleft(tp, ip, whichfork); |
Darrick J. Wong | a5949d3 | 2020-05-23 09:43:31 -0700 | [diff] [blame] | 4720 | |
| 4721 | /* |
Christoph Hellwig | 2a9b99d | 2024-04-29 08:15:25 +0200 | [diff] [blame] | 4722 | * Always allocate convert from the start of the delalloc extent even if |
| 4723 | * that is outside the passed in range to create large contiguous |
| 4724 | * extents on disk. |
| 4725 | */ |
| 4726 | bma.offset = bma.got.br_startoff; |
| 4727 | bma.length = bma.got.br_blockcount; |
| 4728 | |
| 4729 | /* |
Darrick J. Wong | a5949d3 | 2020-05-23 09:43:31 -0700 | [diff] [blame] | 4730 | * When we're converting the delalloc reservations backing dirty pages |
| 4731 | * in the page cache, we must be careful about how we create the new |
| 4732 | * extents: |
| 4733 | * |
| 4734 | * New CoW fork extents are created unwritten, turned into real extents |
| 4735 | * when we're about to write the data to disk, and mapped into the data |
| 4736 | * fork after the write finishes. End of story. |
| 4737 | * |
| 4738 | * New data fork extents must be mapped in as unwritten and converted |
| 4739 | * to real extents after the write succeeds to avoid exposing stale |
| 4740 | * disk contents if we crash. |
| 4741 | */ |
| 4742 | bma.flags = XFS_BMAPI_PREALLOC; |
Christoph Hellwig | d8ae82e | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4743 | if (whichfork == XFS_COW_FORK) |
Darrick J. Wong | a5949d3 | 2020-05-23 09:43:31 -0700 | [diff] [blame] | 4744 | bma.flags |= XFS_BMAPI_COWFORK; |
Christoph Hellwig | d8ae82e | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4745 | |
| 4746 | if (!xfs_iext_peek_prev_extent(ifp, &bma.icur, &bma.prev)) |
| 4747 | bma.prev.br_startoff = NULLFILEOFF; |
| 4748 | |
| 4749 | error = xfs_bmapi_allocate(&bma); |
| 4750 | if (error) |
| 4751 | goto out_finish; |
| 4752 | |
Christoph Hellwig | 125851a | 2019-02-15 08:02:49 -0800 | [diff] [blame] | 4753 | XFS_STATS_ADD(mp, xs_xstrat_bytes, XFS_FSB_TO_B(mp, bma.length)); |
| 4754 | XFS_STATS_INC(mp, xs_xstrat_quick); |
| 4755 | |
Christoph Hellwig | d8ae82e | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4756 | ASSERT(!isnullstartblock(bma.got.br_startblock)); |
Dave Chinner | 304a68b | 2022-11-29 09:09:17 +1100 | [diff] [blame] | 4757 | xfs_bmbt_to_iomap(ip, iomap, &bma.got, 0, flags, |
| 4758 | xfs_iomap_inode_sequence(ip, flags)); |
Zhang Yi | fc8d0ba | 2024-04-25 21:13:28 +0800 | [diff] [blame] | 4759 | if (seq) |
| 4760 | *seq = READ_ONCE(ifp->if_seq); |
Christoph Hellwig | d8ae82e | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4761 | |
Darrick J. Wong | 74b4c5d | 2019-08-26 17:06:04 -0700 | [diff] [blame] | 4762 | if (whichfork == XFS_COW_FORK) |
| 4763 | xfs_refcount_alloc_cow_extent(tp, bma.blkno, bma.length); |
Christoph Hellwig | d8ae82e | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4764 | |
| 4765 | error = xfs_bmap_btree_to_extents(tp, ip, bma.cur, &bma.logflags, |
| 4766 | whichfork); |
Christoph Hellwig | 491ce61 | 2019-02-15 08:02:49 -0800 | [diff] [blame] | 4767 | if (error) |
| 4768 | goto out_finish; |
| 4769 | |
| 4770 | xfs_bmapi_finish(&bma, whichfork, 0); |
| 4771 | error = xfs_trans_commit(tp); |
| 4772 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
| 4773 | return error; |
| 4774 | |
Christoph Hellwig | d8ae82e | 2019-02-15 08:02:48 -0800 | [diff] [blame] | 4775 | out_finish: |
| 4776 | xfs_bmapi_finish(&bma, whichfork, error); |
Christoph Hellwig | 491ce61 | 2019-02-15 08:02:49 -0800 | [diff] [blame] | 4777 | out_trans_cancel: |
| 4778 | xfs_trans_cancel(tp); |
| 4779 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
Brian Foster | 627209f | 2019-02-01 09:14:23 -0800 | [diff] [blame] | 4780 | return error; |
| 4781 | } |
| 4782 | |
Zhang Yi | 2e08371 | 2024-04-25 21:13:29 +0800 | [diff] [blame] | 4783 | /* |
| 4784 | * Pass in a dellalloc extent and convert it to real extents, return the real |
| 4785 | * extent that maps offset_fsb in iomap. |
| 4786 | */ |
| 4787 | int |
| 4788 | xfs_bmapi_convert_delalloc( |
| 4789 | struct xfs_inode *ip, |
| 4790 | int whichfork, |
| 4791 | loff_t offset, |
| 4792 | struct iomap *iomap, |
| 4793 | unsigned int *seq) |
| 4794 | { |
| 4795 | int error; |
| 4796 | |
| 4797 | /* |
| 4798 | * Attempt to allocate whatever delalloc extent currently backs offset |
| 4799 | * and put the result into iomap. Allocate in a loop because it may |
| 4800 | * take several attempts to allocate real blocks for a contiguous |
| 4801 | * delalloc extent if free space is sufficiently fragmented. |
| 4802 | */ |
| 4803 | do { |
| 4804 | error = xfs_bmapi_convert_one_delalloc(ip, whichfork, offset, |
| 4805 | iomap, seq); |
| 4806 | if (error) |
| 4807 | return error; |
| 4808 | } while (iomap->offset + iomap->length <= offset); |
| 4809 | |
| 4810 | return 0; |
| 4811 | } |
| 4812 | |
Darrick J. Wong | 7cf199b | 2018-05-14 06:34:34 -0700 | [diff] [blame] | 4813 | int |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4814 | xfs_bmapi_remap( |
| 4815 | struct xfs_trans *tp, |
| 4816 | struct xfs_inode *ip, |
| 4817 | xfs_fileoff_t bno, |
| 4818 | xfs_filblks_t len, |
| 4819 | xfs_fsblock_t startblock, |
Dave Chinner | e7d410a | 2022-04-21 10:46:09 +1000 | [diff] [blame] | 4820 | uint32_t flags) |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4821 | { |
| 4822 | struct xfs_mount *mp = ip->i_mount; |
Darrick J. Wong | 7cf199b | 2018-05-14 06:34:34 -0700 | [diff] [blame] | 4823 | struct xfs_ifork *ifp; |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4824 | struct xfs_btree_cur *cur = NULL; |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4825 | struct xfs_bmbt_irec got; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 4826 | struct xfs_iext_cursor icur; |
Darrick J. Wong | 7cf199b | 2018-05-14 06:34:34 -0700 | [diff] [blame] | 4827 | int whichfork = xfs_bmapi_whichfork(flags); |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4828 | int logflags = 0, error; |
| 4829 | |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 4830 | ifp = xfs_ifork_ptr(ip, whichfork); |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4831 | ASSERT(len > 0); |
Chandan Babu R | 95f0b95 | 2021-08-09 12:05:22 +0530 | [diff] [blame] | 4832 | ASSERT(len <= (xfs_filblks_t)XFS_MAX_BMBT_EXTLEN); |
Matthew Wilcox (Oracle) | 3fed24f | 2024-02-19 15:41:12 +0000 | [diff] [blame] | 4833 | xfs_assert_ilocked(ip, XFS_ILOCK_EXCL); |
Darrick J. Wong | 7644bd9 | 2018-05-14 06:34:35 -0700 | [diff] [blame] | 4834 | ASSERT(!(flags & ~(XFS_BMAPI_ATTRFORK | XFS_BMAPI_PREALLOC | |
| 4835 | XFS_BMAPI_NORMAP))); |
| 4836 | ASSERT((flags & (XFS_BMAPI_ATTRFORK | XFS_BMAPI_PREALLOC)) != |
| 4837 | (XFS_BMAPI_ATTRFORK | XFS_BMAPI_PREALLOC)); |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4838 | |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 4839 | if (XFS_IS_CORRUPT(mp, !xfs_ifork_has_extents(ifp)) || |
Darrick J. Wong | a71895c | 2019-11-11 12:53:22 -0800 | [diff] [blame] | 4840 | XFS_TEST_ERROR(false, mp, XFS_ERRTAG_BMAPIFORMAT)) { |
Darrick J. Wong | 1196f3f | 2024-02-22 12:31:51 -0800 | [diff] [blame] | 4841 | xfs_bmap_mark_sick(ip, whichfork); |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4842 | return -EFSCORRUPTED; |
| 4843 | } |
| 4844 | |
Dave Chinner | 75c8c50f | 2021-08-18 18:46:53 -0700 | [diff] [blame] | 4845 | if (xfs_is_shutdown(mp)) |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4846 | return -EIO; |
| 4847 | |
Christoph Hellwig | 862a804 | 2021-04-13 11:15:09 -0700 | [diff] [blame] | 4848 | error = xfs_iread_extents(tp, ip, whichfork); |
| 4849 | if (error) |
| 4850 | return error; |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4851 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 4852 | if (xfs_iext_lookup_extent(ip, ifp, bno, &icur, &got)) { |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4853 | /* make sure we only reflink into a hole. */ |
| 4854 | ASSERT(got.br_startoff > bno); |
| 4855 | ASSERT(got.br_startoff - bno >= len); |
| 4856 | } |
| 4857 | |
Christoph Hellwig | 6e73a54 | 2021-03-29 11:11:40 -0700 | [diff] [blame] | 4858 | ip->i_nblocks += len; |
Christoph Hellwig | 90fa22d | 2024-08-27 07:03:21 +0200 | [diff] [blame] | 4859 | ip->i_delayed_blks -= len; /* see xfs_bmap_defer_add */ |
Christoph Hellwig | bf8eadb | 2017-04-11 16:45:56 -0700 | [diff] [blame] | 4860 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4861 | |
Christoph Hellwig | e9e66df | 2024-02-22 12:35:13 -0800 | [diff] [blame] | 4862 | if (ifp->if_format == XFS_DINODE_FMT_BTREE) |
Darrick J. Wong | 7cf199b | 2018-05-14 06:34:34 -0700 | [diff] [blame] | 4863 | cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4864 | |
| 4865 | got.br_startoff = bno; |
| 4866 | got.br_startblock = startblock; |
| 4867 | got.br_blockcount = len; |
Darrick J. Wong | 7644bd9 | 2018-05-14 06:34:35 -0700 | [diff] [blame] | 4868 | if (flags & XFS_BMAPI_PREALLOC) |
| 4869 | got.br_state = XFS_EXT_UNWRITTEN; |
| 4870 | else |
| 4871 | got.br_state = XFS_EXT_NORM; |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4872 | |
Darrick J. Wong | 7cf199b | 2018-05-14 06:34:34 -0700 | [diff] [blame] | 4873 | error = xfs_bmap_add_extent_hole_real(tp, ip, whichfork, &icur, |
Brian Foster | 92f9da3 | 2018-07-11 22:26:28 -0700 | [diff] [blame] | 4874 | &cur, &got, &logflags, flags); |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4875 | if (error) |
| 4876 | goto error0; |
| 4877 | |
Christoph Hellwig | b101e33 | 2019-02-15 08:02:47 -0800 | [diff] [blame] | 4878 | error = xfs_bmap_btree_to_extents(tp, ip, cur, &logflags, whichfork); |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4879 | |
| 4880 | error0: |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 4881 | if (ip->i_df.if_format != XFS_DINODE_FMT_EXTENTS) |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4882 | logflags &= ~XFS_ILOG_DEXT; |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 4883 | else if (ip->i_df.if_format != XFS_DINODE_FMT_BTREE) |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4884 | logflags &= ~XFS_ILOG_DBROOT; |
| 4885 | |
| 4886 | if (logflags) |
| 4887 | xfs_trans_log_inode(tp, ip, logflags); |
Darrick J. Wong | 0b04b6b8 | 2018-07-19 12:26:31 -0700 | [diff] [blame] | 4888 | if (cur) |
| 4889 | xfs_btree_del_cursor(cur, error); |
Christoph Hellwig | 6ebd5a4 | 2017-04-11 16:45:55 -0700 | [diff] [blame] | 4890 | return error; |
| 4891 | } |
| 4892 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4893 | /* |
Brian Foster | a9bd24a | 2016-03-15 11:42:46 +1100 | [diff] [blame] | 4894 | * When a delalloc extent is split (e.g., due to a hole punch), the original |
| 4895 | * indlen reservation must be shared across the two new extents that are left |
| 4896 | * behind. |
| 4897 | * |
| 4898 | * Given the original reservation and the worst case indlen for the two new |
| 4899 | * extents (as calculated by xfs_bmap_worst_indlen()), split the original |
Brian Foster | d34999c | 2016-03-15 11:42:47 +1100 | [diff] [blame] | 4900 | * reservation fairly across the two new extents. If necessary, steal available |
| 4901 | * blocks from a deleted extent to make up a reservation deficiency (e.g., if |
| 4902 | * ores == 1). The number of stolen blocks is returned. The availability and |
| 4903 | * subsequent accounting of stolen blocks is the responsibility of the caller. |
Brian Foster | a9bd24a | 2016-03-15 11:42:46 +1100 | [diff] [blame] | 4904 | */ |
Christoph Hellwig | da2b9c3 | 2024-04-22 13:20:17 +0200 | [diff] [blame] | 4905 | static void |
Brian Foster | a9bd24a | 2016-03-15 11:42:46 +1100 | [diff] [blame] | 4906 | xfs_bmap_split_indlen( |
| 4907 | xfs_filblks_t ores, /* original res. */ |
| 4908 | xfs_filblks_t *indlen1, /* ext1 worst indlen */ |
Christoph Hellwig | da2b9c3 | 2024-04-22 13:20:17 +0200 | [diff] [blame] | 4909 | xfs_filblks_t *indlen2) /* ext2 worst indlen */ |
Brian Foster | a9bd24a | 2016-03-15 11:42:46 +1100 | [diff] [blame] | 4910 | { |
| 4911 | xfs_filblks_t len1 = *indlen1; |
| 4912 | xfs_filblks_t len2 = *indlen2; |
| 4913 | xfs_filblks_t nres = len1 + len2; /* new total res. */ |
Brian Foster | 75d6536 | 2017-02-13 22:48:30 -0800 | [diff] [blame] | 4914 | xfs_filblks_t resfactor; |
Brian Foster | a9bd24a | 2016-03-15 11:42:46 +1100 | [diff] [blame] | 4915 | |
| 4916 | /* |
Brian Foster | 75d6536 | 2017-02-13 22:48:30 -0800 | [diff] [blame] | 4917 | * We can't meet the total required reservation for the two extents. |
| 4918 | * Calculate the percent of the overall shortage between both extents |
| 4919 | * and apply this percentage to each of the requested indlen values. |
| 4920 | * This distributes the shortage fairly and reduces the chances that one |
| 4921 | * of the two extents is left with nothing when extents are repeatedly |
| 4922 | * split. |
Brian Foster | a9bd24a | 2016-03-15 11:42:46 +1100 | [diff] [blame] | 4923 | */ |
Brian Foster | 75d6536 | 2017-02-13 22:48:30 -0800 | [diff] [blame] | 4924 | resfactor = (ores * 100); |
| 4925 | do_div(resfactor, nres); |
| 4926 | len1 *= resfactor; |
| 4927 | do_div(len1, 100); |
| 4928 | len2 *= resfactor; |
| 4929 | do_div(len2, 100); |
| 4930 | ASSERT(len1 + len2 <= ores); |
| 4931 | ASSERT(len1 < *indlen1 && len2 < *indlen2); |
| 4932 | |
| 4933 | /* |
| 4934 | * Hand out the remainder to each extent. If one of the two reservations |
| 4935 | * is zero, we want to make sure that one gets a block first. The loop |
| 4936 | * below starts with len1, so hand len2 a block right off the bat if it |
| 4937 | * is zero. |
| 4938 | */ |
| 4939 | ores -= (len1 + len2); |
| 4940 | ASSERT((*indlen1 - len1) + (*indlen2 - len2) >= ores); |
| 4941 | if (ores && !len2 && *indlen2) { |
| 4942 | len2++; |
| 4943 | ores--; |
| 4944 | } |
| 4945 | while (ores) { |
| 4946 | if (len1 < *indlen1) { |
| 4947 | len1++; |
| 4948 | ores--; |
Brian Foster | a9bd24a | 2016-03-15 11:42:46 +1100 | [diff] [blame] | 4949 | } |
Brian Foster | 75d6536 | 2017-02-13 22:48:30 -0800 | [diff] [blame] | 4950 | if (!ores) |
Brian Foster | a9bd24a | 2016-03-15 11:42:46 +1100 | [diff] [blame] | 4951 | break; |
Brian Foster | 75d6536 | 2017-02-13 22:48:30 -0800 | [diff] [blame] | 4952 | if (len2 < *indlen2) { |
| 4953 | len2++; |
| 4954 | ores--; |
Brian Foster | a9bd24a | 2016-03-15 11:42:46 +1100 | [diff] [blame] | 4955 | } |
| 4956 | } |
| 4957 | |
| 4958 | *indlen1 = len1; |
| 4959 | *indlen2 = len2; |
| 4960 | } |
| 4961 | |
Christoph Hellwig | cc3c92e | 2024-04-30 14:58:22 +0200 | [diff] [blame] | 4962 | void |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 4963 | xfs_bmap_del_extent_delay( |
| 4964 | struct xfs_inode *ip, |
| 4965 | int whichfork, |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 4966 | struct xfs_iext_cursor *icur, |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 4967 | struct xfs_bmbt_irec *got, |
| 4968 | struct xfs_bmbt_irec *del) |
| 4969 | { |
| 4970 | struct xfs_mount *mp = ip->i_mount; |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 4971 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 4972 | struct xfs_bmbt_irec new; |
| 4973 | int64_t da_old, da_new, da_diff = 0; |
| 4974 | xfs_fileoff_t del_endoff, got_endoff; |
Christoph Hellwig | da2b9c3 | 2024-04-22 13:20:17 +0200 | [diff] [blame] | 4975 | xfs_filblks_t got_indlen, new_indlen, stolen = 0; |
Dave Chinner | 0e5b8e4 | 2022-04-21 10:46:01 +1000 | [diff] [blame] | 4976 | uint32_t state = xfs_bmap_fork_to_state(whichfork); |
Christoph Hellwig | 7e77d57 | 2024-04-22 13:20:14 +0200 | [diff] [blame] | 4977 | uint64_t fdblocks; |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 4978 | bool isrt; |
| 4979 | |
| 4980 | XFS_STATS_INC(mp, xs_del_exlist); |
| 4981 | |
Darrick J. Wong | 5049ff4 | 2024-02-22 12:43:36 -0800 | [diff] [blame] | 4982 | isrt = xfs_ifork_is_realtime(ip, whichfork); |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 4983 | del_endoff = del->br_startoff + del->br_blockcount; |
| 4984 | got_endoff = got->br_startoff + got->br_blockcount; |
| 4985 | da_old = startblockval(got->br_startblock); |
| 4986 | da_new = 0; |
| 4987 | |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 4988 | ASSERT(del->br_blockcount > 0); |
| 4989 | ASSERT(got->br_startoff <= del->br_startoff); |
| 4990 | ASSERT(got_endoff >= del_endoff); |
| 4991 | |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 4992 | /* |
| 4993 | * Update the inode delalloc counter now and wait to update the |
| 4994 | * sb counters as we might have to borrow some blocks for the |
| 4995 | * indirect block accounting. |
| 4996 | */ |
Christoph Hellwig | cc3c92e | 2024-04-30 14:58:22 +0200 | [diff] [blame] | 4997 | xfs_quota_unreserve_blkres(ip, del->br_blockcount); |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 4998 | ip->i_delayed_blks -= del->br_blockcount; |
| 4999 | |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5000 | if (got->br_startoff == del->br_startoff) |
Christoph Hellwig | 0173c68 | 2017-10-17 14:16:22 -0700 | [diff] [blame] | 5001 | state |= BMAP_LEFT_FILLING; |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5002 | if (got_endoff == del_endoff) |
Christoph Hellwig | 0173c68 | 2017-10-17 14:16:22 -0700 | [diff] [blame] | 5003 | state |= BMAP_RIGHT_FILLING; |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5004 | |
Christoph Hellwig | 0173c68 | 2017-10-17 14:16:22 -0700 | [diff] [blame] | 5005 | switch (state & (BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING)) { |
| 5006 | case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING: |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5007 | /* |
| 5008 | * Matches the whole extent. Delete the entry. |
| 5009 | */ |
Christoph Hellwig | c38ccf5 | 2017-11-03 10:34:47 -0700 | [diff] [blame] | 5010 | xfs_iext_remove(ip, icur, state); |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5011 | xfs_iext_prev(ifp, icur); |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5012 | break; |
Christoph Hellwig | 0173c68 | 2017-10-17 14:16:22 -0700 | [diff] [blame] | 5013 | case BMAP_LEFT_FILLING: |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5014 | /* |
| 5015 | * Deleting the first part of the extent. |
| 5016 | */ |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5017 | got->br_startoff = del_endoff; |
| 5018 | got->br_blockcount -= del->br_blockcount; |
| 5019 | da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, |
| 5020 | got->br_blockcount), da_old); |
| 5021 | got->br_startblock = nullstartblock((int)da_new); |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5022 | xfs_iext_update_extent(ip, state, icur, got); |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5023 | break; |
Christoph Hellwig | 0173c68 | 2017-10-17 14:16:22 -0700 | [diff] [blame] | 5024 | case BMAP_RIGHT_FILLING: |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5025 | /* |
| 5026 | * Deleting the last part of the extent. |
| 5027 | */ |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5028 | got->br_blockcount = got->br_blockcount - del->br_blockcount; |
| 5029 | da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, |
| 5030 | got->br_blockcount), da_old); |
| 5031 | got->br_startblock = nullstartblock((int)da_new); |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5032 | xfs_iext_update_extent(ip, state, icur, got); |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5033 | break; |
| 5034 | case 0: |
| 5035 | /* |
| 5036 | * Deleting the middle of the extent. |
| 5037 | * |
| 5038 | * Distribute the original indlen reservation across the two new |
| 5039 | * extents. Steal blocks from the deleted extent if necessary. |
| 5040 | * Stealing blocks simply fudges the fdblocks accounting below. |
| 5041 | * Warn if either of the new indlen reservations is zero as this |
| 5042 | * can lead to delalloc problems. |
| 5043 | */ |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5044 | got->br_blockcount = del->br_startoff - got->br_startoff; |
| 5045 | got_indlen = xfs_bmap_worst_indlen(ip, got->br_blockcount); |
| 5046 | |
| 5047 | new.br_blockcount = got_endoff - del_endoff; |
| 5048 | new_indlen = xfs_bmap_worst_indlen(ip, new.br_blockcount); |
| 5049 | |
| 5050 | WARN_ON_ONCE(!got_indlen || !new_indlen); |
Christoph Hellwig | da2b9c3 | 2024-04-22 13:20:17 +0200 | [diff] [blame] | 5051 | /* |
| 5052 | * Steal as many blocks as we can to try and satisfy the worst |
| 5053 | * case indlen for both new extents. |
Christoph Hellwig | bd1753d | 2024-04-22 13:20:18 +0200 | [diff] [blame] | 5054 | * |
| 5055 | * However, we can't just steal reservations from the data |
| 5056 | * blocks if this is an RT inodes as the data and metadata |
| 5057 | * blocks come from different pools. We'll have to live with |
| 5058 | * under-filled indirect reservation in this case. |
Christoph Hellwig | da2b9c3 | 2024-04-22 13:20:17 +0200 | [diff] [blame] | 5059 | */ |
| 5060 | da_new = got_indlen + new_indlen; |
Christoph Hellwig | bd1753d | 2024-04-22 13:20:18 +0200 | [diff] [blame] | 5061 | if (da_new > da_old && !isrt) { |
Christoph Hellwig | da2b9c3 | 2024-04-22 13:20:17 +0200 | [diff] [blame] | 5062 | stolen = XFS_FILBLKS_MIN(da_new - da_old, |
| 5063 | del->br_blockcount); |
| 5064 | da_old += stolen; |
| 5065 | } |
| 5066 | if (da_new > da_old) |
| 5067 | xfs_bmap_split_indlen(da_old, &got_indlen, &new_indlen); |
| 5068 | da_new = got_indlen + new_indlen; |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5069 | |
| 5070 | got->br_startblock = nullstartblock((int)got_indlen); |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5071 | |
| 5072 | new.br_startoff = del_endoff; |
| 5073 | new.br_state = got->br_state; |
| 5074 | new.br_startblock = nullstartblock((int)new_indlen); |
| 5075 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5076 | xfs_iext_update_extent(ip, state, icur, got); |
| 5077 | xfs_iext_next(ifp, icur); |
Christoph Hellwig | 0254c2f | 2017-11-03 10:34:46 -0700 | [diff] [blame] | 5078 | xfs_iext_insert(ip, icur, &new, state); |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5079 | |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5080 | del->br_blockcount -= stolen; |
| 5081 | break; |
| 5082 | } |
| 5083 | |
| 5084 | ASSERT(da_old >= da_new); |
| 5085 | da_diff = da_old - da_new; |
Christoph Hellwig | 7e77d57 | 2024-04-22 13:20:14 +0200 | [diff] [blame] | 5086 | fdblocks = da_diff; |
| 5087 | |
| 5088 | if (isrt) |
| 5089 | xfs_add_frextents(mp, xfs_rtb_to_rtx(mp, del->br_blockcount)); |
| 5090 | else |
| 5091 | fdblocks += del->br_blockcount; |
| 5092 | |
| 5093 | xfs_add_fdblocks(mp, fdblocks); |
Christoph Hellwig | 7099bd0 | 2024-04-22 13:20:15 +0200 | [diff] [blame] | 5094 | xfs_mod_delalloc(ip, -(int64_t)del->br_blockcount, -da_diff); |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5095 | } |
| 5096 | |
| 5097 | void |
| 5098 | xfs_bmap_del_extent_cow( |
| 5099 | struct xfs_inode *ip, |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5100 | struct xfs_iext_cursor *icur, |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5101 | struct xfs_bmbt_irec *got, |
| 5102 | struct xfs_bmbt_irec *del) |
| 5103 | { |
| 5104 | struct xfs_mount *mp = ip->i_mount; |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 5105 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, XFS_COW_FORK); |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5106 | struct xfs_bmbt_irec new; |
| 5107 | xfs_fileoff_t del_endoff, got_endoff; |
Dave Chinner | 0e5b8e4 | 2022-04-21 10:46:01 +1000 | [diff] [blame] | 5108 | uint32_t state = BMAP_COWFORK; |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5109 | |
| 5110 | XFS_STATS_INC(mp, xs_del_exlist); |
| 5111 | |
| 5112 | del_endoff = del->br_startoff + del->br_blockcount; |
| 5113 | got_endoff = got->br_startoff + got->br_blockcount; |
| 5114 | |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5115 | ASSERT(del->br_blockcount > 0); |
| 5116 | ASSERT(got->br_startoff <= del->br_startoff); |
| 5117 | ASSERT(got_endoff >= del_endoff); |
| 5118 | ASSERT(!isnullstartblock(got->br_startblock)); |
| 5119 | |
| 5120 | if (got->br_startoff == del->br_startoff) |
Christoph Hellwig | 0173c68 | 2017-10-17 14:16:22 -0700 | [diff] [blame] | 5121 | state |= BMAP_LEFT_FILLING; |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5122 | if (got_endoff == del_endoff) |
Christoph Hellwig | 0173c68 | 2017-10-17 14:16:22 -0700 | [diff] [blame] | 5123 | state |= BMAP_RIGHT_FILLING; |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5124 | |
Christoph Hellwig | 0173c68 | 2017-10-17 14:16:22 -0700 | [diff] [blame] | 5125 | switch (state & (BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING)) { |
| 5126 | case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING: |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5127 | /* |
| 5128 | * Matches the whole extent. Delete the entry. |
| 5129 | */ |
Christoph Hellwig | c38ccf5 | 2017-11-03 10:34:47 -0700 | [diff] [blame] | 5130 | xfs_iext_remove(ip, icur, state); |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5131 | xfs_iext_prev(ifp, icur); |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5132 | break; |
Christoph Hellwig | 0173c68 | 2017-10-17 14:16:22 -0700 | [diff] [blame] | 5133 | case BMAP_LEFT_FILLING: |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5134 | /* |
| 5135 | * Deleting the first part of the extent. |
| 5136 | */ |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5137 | got->br_startoff = del_endoff; |
| 5138 | got->br_blockcount -= del->br_blockcount; |
| 5139 | got->br_startblock = del->br_startblock + del->br_blockcount; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5140 | xfs_iext_update_extent(ip, state, icur, got); |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5141 | break; |
Christoph Hellwig | 0173c68 | 2017-10-17 14:16:22 -0700 | [diff] [blame] | 5142 | case BMAP_RIGHT_FILLING: |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5143 | /* |
| 5144 | * Deleting the last part of the extent. |
| 5145 | */ |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5146 | got->br_blockcount -= del->br_blockcount; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5147 | xfs_iext_update_extent(ip, state, icur, got); |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5148 | break; |
| 5149 | case 0: |
| 5150 | /* |
| 5151 | * Deleting the middle of the extent. |
| 5152 | */ |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5153 | got->br_blockcount = del->br_startoff - got->br_startoff; |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5154 | |
| 5155 | new.br_startoff = del_endoff; |
| 5156 | new.br_blockcount = got_endoff - del_endoff; |
| 5157 | new.br_state = got->br_state; |
| 5158 | new.br_startblock = del->br_startblock + del->br_blockcount; |
| 5159 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5160 | xfs_iext_update_extent(ip, state, icur, got); |
| 5161 | xfs_iext_next(ifp, icur); |
Christoph Hellwig | 0254c2f | 2017-11-03 10:34:46 -0700 | [diff] [blame] | 5162 | xfs_iext_insert(ip, icur, &new, state); |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5163 | break; |
| 5164 | } |
Darrick J. Wong | 4b4c132 | 2018-01-19 09:05:48 -0800 | [diff] [blame] | 5165 | ip->i_delayed_blks -= del->br_blockcount; |
Christoph Hellwig | fa5c836 | 2016-10-20 15:54:14 +1100 | [diff] [blame] | 5166 | } |
| 5167 | |
Brian Foster | a9bd24a | 2016-03-15 11:42:46 +1100 | [diff] [blame] | 5168 | /* |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5169 | * Called by xfs_bmapi to update file extent records and the btree |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5170 | * after removing space. |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5171 | */ |
| 5172 | STATIC int /* error */ |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5173 | xfs_bmap_del_extent_real( |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5174 | xfs_inode_t *ip, /* incore inode pointer */ |
| 5175 | xfs_trans_t *tp, /* current transaction pointer */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5176 | struct xfs_iext_cursor *icur, |
Darrick J. Wong | ae127f0 | 2021-09-16 12:18:47 -0700 | [diff] [blame] | 5177 | struct xfs_btree_cur *cur, /* if null, not a btree */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5178 | xfs_bmbt_irec_t *del, /* data to remove from extents */ |
| 5179 | int *logflagsp, /* inode logging flags */ |
Darrick J. Wong | 4847acf | 2016-10-03 09:11:27 -0700 | [diff] [blame] | 5180 | int whichfork, /* data or attr fork */ |
Dave Chinner | e7d410a | 2022-04-21 10:46:09 +1000 | [diff] [blame] | 5181 | uint32_t bflags) /* bmapi flags */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5182 | { |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5183 | xfs_fsblock_t del_endblock=0; /* first block past del */ |
| 5184 | xfs_fileoff_t del_endoff; /* first offset past del */ |
Christoph Hellwig | 9871d09 | 2024-04-22 13:20:09 +0200 | [diff] [blame] | 5185 | int error = 0; /* error return value */ |
Christoph Hellwig | 48fd52b | 2017-10-17 14:16:23 -0700 | [diff] [blame] | 5186 | struct xfs_bmbt_irec got; /* current extent entry */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5187 | xfs_fileoff_t got_endoff; /* first offset past got */ |
| 5188 | int i; /* temp state */ |
Christoph Hellwig | 3ba738d | 2018-07-17 16:51:50 -0700 | [diff] [blame] | 5189 | struct xfs_ifork *ifp; /* inode fork pointer */ |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5190 | xfs_mount_t *mp; /* mount structure */ |
| 5191 | xfs_filblks_t nblks; /* quota/sb block count */ |
| 5192 | xfs_bmbt_irec_t new; /* new record to be inserted */ |
| 5193 | /* REFERENCED */ |
| 5194 | uint qfield; /* quota field to update */ |
Dave Chinner | 0e5b8e4 | 2022-04-21 10:46:01 +1000 | [diff] [blame] | 5195 | uint32_t state = xfs_bmap_fork_to_state(whichfork); |
Christoph Hellwig | 48fd52b | 2017-10-17 14:16:23 -0700 | [diff] [blame] | 5196 | struct xfs_bmbt_irec old; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5197 | |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5198 | *logflagsp = 0; |
| 5199 | |
Bill O'Donnell | ff6d6af | 2015-10-12 18:21:22 +1100 | [diff] [blame] | 5200 | mp = ip->i_mount; |
| 5201 | XFS_STATS_INC(mp, xs_del_exlist); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5202 | |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 5203 | ifp = xfs_ifork_ptr(ip, whichfork); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5204 | ASSERT(del->br_blockcount > 0); |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5205 | xfs_iext_get_extent(ifp, icur, &got); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5206 | ASSERT(got.br_startoff <= del->br_startoff); |
| 5207 | del_endoff = del->br_startoff + del->br_blockcount; |
| 5208 | got_endoff = got.br_startoff + got.br_blockcount; |
| 5209 | ASSERT(got_endoff >= del_endoff); |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5210 | ASSERT(!isnullstartblock(got.br_startblock)); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5211 | qfield = 0; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5212 | |
Christoph Hellwig | 1b24b63 | 2017-10-17 14:16:22 -0700 | [diff] [blame] | 5213 | /* |
| 5214 | * If it's the case where the directory code is running with no block |
| 5215 | * reservation, and the deleted block is in the middle of its extent, |
| 5216 | * and the resulting insert of an extent would cause transformation to |
| 5217 | * btree format, then reject it. The calling code will then swap blocks |
| 5218 | * around instead. We have to do this now, rather than waiting for the |
| 5219 | * conversion to btree format, since the transaction will be dirty then. |
| 5220 | */ |
| 5221 | if (tp->t_blk_res == 0 && |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 5222 | ifp->if_format == XFS_DINODE_FMT_EXTENTS && |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 5223 | ifp->if_nextents >= XFS_IFORK_MAXEXT(ip, whichfork) && |
Christoph Hellwig | 1b24b63 | 2017-10-17 14:16:22 -0700 | [diff] [blame] | 5224 | del->br_startoff > got.br_startoff && del_endoff < got_endoff) |
| 5225 | return -ENOSPC; |
| 5226 | |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5227 | *logflagsp = XFS_ILOG_CORE; |
Christoph Hellwig | 9871d09 | 2024-04-22 13:20:09 +0200 | [diff] [blame] | 5228 | if (xfs_ifork_is_realtime(ip, whichfork)) |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5229 | qfield = XFS_TRANS_DQ_RTBCOUNT; |
Christoph Hellwig | 9871d09 | 2024-04-22 13:20:09 +0200 | [diff] [blame] | 5230 | else |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5231 | qfield = XFS_TRANS_DQ_BCOUNT; |
Darrick J. Wong | 6c66448 | 2023-10-16 09:16:22 -0700 | [diff] [blame] | 5232 | nblks = del->br_blockcount; |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5233 | |
| 5234 | del_endblock = del->br_startblock + del->br_blockcount; |
| 5235 | if (cur) { |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 5236 | error = xfs_bmbt_lookup_eq(cur, &got, &i); |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5237 | if (error) |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5238 | return error; |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 5239 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
| 5240 | xfs_btree_mark_sick(cur); |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5241 | return -EFSCORRUPTED; |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 5242 | } |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5243 | } |
Darrick J. Wong | 340785c | 2016-08-03 11:33:42 +1000 | [diff] [blame] | 5244 | |
Christoph Hellwig | 491f6f8a | 2017-10-17 14:16:23 -0700 | [diff] [blame] | 5245 | if (got.br_startoff == del->br_startoff) |
| 5246 | state |= BMAP_LEFT_FILLING; |
| 5247 | if (got_endoff == del_endoff) |
| 5248 | state |= BMAP_RIGHT_FILLING; |
| 5249 | |
| 5250 | switch (state & (BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING)) { |
| 5251 | case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING: |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5252 | /* |
| 5253 | * Matches the whole extent. Delete the entry. |
| 5254 | */ |
Christoph Hellwig | c38ccf5 | 2017-11-03 10:34:47 -0700 | [diff] [blame] | 5255 | xfs_iext_remove(ip, icur, state); |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5256 | xfs_iext_prev(ifp, icur); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 5257 | ifp->if_nextents--; |
| 5258 | |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5259 | *logflagsp |= XFS_ILOG_CORE; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5260 | if (!cur) { |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5261 | *logflagsp |= xfs_ilog_fext(whichfork); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5262 | break; |
| 5263 | } |
| 5264 | if ((error = xfs_btree_delete(cur, &i))) |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5265 | return error; |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 5266 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
| 5267 | xfs_btree_mark_sick(cur); |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5268 | return -EFSCORRUPTED; |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 5269 | } |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5270 | break; |
Christoph Hellwig | 491f6f8a | 2017-10-17 14:16:23 -0700 | [diff] [blame] | 5271 | case BMAP_LEFT_FILLING: |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5272 | /* |
| 5273 | * Deleting the first part of the extent. |
| 5274 | */ |
Christoph Hellwig | 48fd52b | 2017-10-17 14:16:23 -0700 | [diff] [blame] | 5275 | got.br_startoff = del_endoff; |
| 5276 | got.br_startblock = del_endblock; |
| 5277 | got.br_blockcount -= del->br_blockcount; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5278 | xfs_iext_update_extent(ip, state, icur, &got); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5279 | if (!cur) { |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5280 | *logflagsp |= xfs_ilog_fext(whichfork); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5281 | break; |
| 5282 | } |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 5283 | error = xfs_bmbt_update(cur, &got); |
Christoph Hellwig | 48fd52b | 2017-10-17 14:16:23 -0700 | [diff] [blame] | 5284 | if (error) |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5285 | return error; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5286 | break; |
Christoph Hellwig | 491f6f8a | 2017-10-17 14:16:23 -0700 | [diff] [blame] | 5287 | case BMAP_RIGHT_FILLING: |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5288 | /* |
| 5289 | * Deleting the last part of the extent. |
| 5290 | */ |
Christoph Hellwig | 48fd52b | 2017-10-17 14:16:23 -0700 | [diff] [blame] | 5291 | got.br_blockcount -= del->br_blockcount; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5292 | xfs_iext_update_extent(ip, state, icur, &got); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5293 | if (!cur) { |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5294 | *logflagsp |= xfs_ilog_fext(whichfork); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5295 | break; |
| 5296 | } |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 5297 | error = xfs_bmbt_update(cur, &got); |
Christoph Hellwig | 48fd52b | 2017-10-17 14:16:23 -0700 | [diff] [blame] | 5298 | if (error) |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5299 | return error; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5300 | break; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5301 | case 0: |
| 5302 | /* |
| 5303 | * Deleting the middle of the extent. |
| 5304 | */ |
Chandan Babu R | 0dbc5cb | 2021-01-22 16:48:12 -0800 | [diff] [blame] | 5305 | |
Christoph Hellwig | 48fd52b | 2017-10-17 14:16:23 -0700 | [diff] [blame] | 5306 | old = got; |
Christoph Hellwig | ca5d8e5b | 2017-10-19 11:04:44 -0700 | [diff] [blame] | 5307 | |
Christoph Hellwig | 48fd52b | 2017-10-17 14:16:23 -0700 | [diff] [blame] | 5308 | got.br_blockcount = del->br_startoff - got.br_startoff; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5309 | xfs_iext_update_extent(ip, state, icur, &got); |
Christoph Hellwig | 48fd52b | 2017-10-17 14:16:23 -0700 | [diff] [blame] | 5310 | |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5311 | new.br_startoff = del_endoff; |
Christoph Hellwig | 48fd52b | 2017-10-17 14:16:23 -0700 | [diff] [blame] | 5312 | new.br_blockcount = got_endoff - del_endoff; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5313 | new.br_state = got.br_state; |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5314 | new.br_startblock = del_endblock; |
Christoph Hellwig | 48fd52b | 2017-10-17 14:16:23 -0700 | [diff] [blame] | 5315 | |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5316 | *logflagsp |= XFS_ILOG_CORE; |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5317 | if (cur) { |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 5318 | error = xfs_bmbt_update(cur, &got); |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5319 | if (error) |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5320 | return error; |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5321 | error = xfs_btree_increment(cur, 0, &i); |
| 5322 | if (error) |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5323 | return error; |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5324 | cur->bc_rec.b = new; |
| 5325 | error = xfs_btree_insert(cur, &i); |
| 5326 | if (error && error != -ENOSPC) |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5327 | return error; |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5328 | /* |
| 5329 | * If get no-space back from btree insert, it tried a |
| 5330 | * split, and we have a zero block reservation. Fix up |
| 5331 | * our state and return the error. |
| 5332 | */ |
| 5333 | if (error == -ENOSPC) { |
| 5334 | /* |
| 5335 | * Reset the cursor, don't trust it after any |
| 5336 | * insert operation. |
| 5337 | */ |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 5338 | error = xfs_bmbt_lookup_eq(cur, &got, &i); |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5339 | if (error) |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5340 | return error; |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 5341 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
| 5342 | xfs_btree_mark_sick(cur); |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5343 | return -EFSCORRUPTED; |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 5344 | } |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5345 | /* |
| 5346 | * Update the btree record back |
| 5347 | * to the original value. |
| 5348 | */ |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 5349 | error = xfs_bmbt_update(cur, &old); |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5350 | if (error) |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5351 | return error; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5352 | /* |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5353 | * Reset the extent record back |
| 5354 | * to the original value. |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5355 | */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5356 | xfs_iext_update_extent(ip, state, icur, &old); |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5357 | *logflagsp = 0; |
| 5358 | return -ENOSPC; |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5359 | } |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 5360 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
| 5361 | xfs_btree_mark_sick(cur); |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5362 | return -EFSCORRUPTED; |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 5363 | } |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5364 | } else |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5365 | *logflagsp |= xfs_ilog_fext(whichfork); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 5366 | |
| 5367 | ifp->if_nextents++; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5368 | xfs_iext_next(ifp, icur); |
Christoph Hellwig | 0254c2f | 2017-11-03 10:34:46 -0700 | [diff] [blame] | 5369 | xfs_iext_insert(ip, icur, &new, state); |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5370 | break; |
| 5371 | } |
Darrick J. Wong | 9c19464 | 2016-08-03 12:16:05 +1000 | [diff] [blame] | 5372 | |
| 5373 | /* remove reverse mapping */ |
Darrick J. Wong | bc46ac6 | 2019-08-26 17:06:03 -0700 | [diff] [blame] | 5374 | xfs_rmap_unmap_extent(tp, ip, whichfork, del); |
Darrick J. Wong | 9c19464 | 2016-08-03 12:16:05 +1000 | [diff] [blame] | 5375 | |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5376 | /* |
| 5377 | * If we need to, add to list of extents to delete. |
| 5378 | */ |
Christoph Hellwig | 9871d09 | 2024-04-22 13:20:09 +0200 | [diff] [blame] | 5379 | if (!(bflags & XFS_BMAPI_REMAP)) { |
Darrick J. Wong | 62aab20 | 2016-10-03 09:11:23 -0700 | [diff] [blame] | 5380 | if (xfs_is_reflink_inode(ip) && whichfork == XFS_DATA_FORK) { |
Darrick J. Wong | 74b4c5d | 2019-08-26 17:06:04 -0700 | [diff] [blame] | 5381 | xfs_refcount_decrease_extent(tp, del); |
Christoph Hellwig | 9871d09 | 2024-04-22 13:20:09 +0200 | [diff] [blame] | 5382 | } else if (xfs_ifork_is_realtime(ip, whichfork)) { |
Christoph Hellwig | de37dbd | 2024-04-22 13:20:10 +0200 | [diff] [blame] | 5383 | /* |
| 5384 | * Ensure the bitmap and summary inodes are locked |
| 5385 | * and joined to the transaction before modifying them. |
| 5386 | */ |
| 5387 | if (!(tp->t_flags & XFS_TRANS_RTBITMAP_LOCKED)) { |
| 5388 | tp->t_flags |= XFS_TRANS_RTBITMAP_LOCKED; |
Christoph Hellwig | 0a59e4f | 2024-08-30 15:36:59 -0700 | [diff] [blame] | 5389 | xfs_rtbitmap_lock(mp); |
| 5390 | xfs_rtbitmap_trans_join(tp); |
Christoph Hellwig | de37dbd | 2024-04-22 13:20:10 +0200 | [diff] [blame] | 5391 | } |
Christoph Hellwig | 9871d09 | 2024-04-22 13:20:09 +0200 | [diff] [blame] | 5392 | error = xfs_rtfree_blocks(tp, del->br_startblock, |
| 5393 | del->br_blockcount); |
Brian Foster | fcb762f | 2018-05-09 08:45:04 -0700 | [diff] [blame] | 5394 | } else { |
Darrick J. Wong | 980faec | 2024-07-02 11:22:51 -0700 | [diff] [blame] | 5395 | unsigned int efi_flags = 0; |
| 5396 | |
| 5397 | if ((bflags & XFS_BMAPI_NODISCARD) || |
| 5398 | del->br_state == XFS_EXT_UNWRITTEN) |
| 5399 | efi_flags |= XFS_FREE_EXTENT_SKIP_DISCARD; |
| 5400 | |
Darrick J. Wong | 4c88fef | 2023-12-06 18:40:57 -0800 | [diff] [blame] | 5401 | error = xfs_free_extent_later(tp, del->br_startblock, |
Brian Foster | 4e52933 | 2018-05-10 09:35:42 -0700 | [diff] [blame] | 5402 | del->br_blockcount, NULL, |
Darrick J. Wong | 980faec | 2024-07-02 11:22:51 -0700 | [diff] [blame] | 5403 | XFS_AG_RESV_NONE, efi_flags); |
Brian Foster | fcb762f | 2018-05-09 08:45:04 -0700 | [diff] [blame] | 5404 | } |
Christoph Hellwig | 9871d09 | 2024-04-22 13:20:09 +0200 | [diff] [blame] | 5405 | if (error) |
| 5406 | return error; |
Darrick J. Wong | 62aab20 | 2016-10-03 09:11:23 -0700 | [diff] [blame] | 5407 | } |
| 5408 | |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5409 | /* |
| 5410 | * Adjust inode # blocks in the file. |
| 5411 | */ |
| 5412 | if (nblks) |
Christoph Hellwig | 6e73a54 | 2021-03-29 11:11:40 -0700 | [diff] [blame] | 5413 | ip->i_nblocks -= nblks; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5414 | /* |
| 5415 | * Adjust quota data. |
| 5416 | */ |
Darrick J. Wong | 4847acf | 2016-10-03 09:11:27 -0700 | [diff] [blame] | 5417 | if (qfield && !(bflags & XFS_BMAPI_REMAP)) |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5418 | xfs_trans_mod_dquot_byino(tp, ip, qfield, (long)-nblks); |
| 5419 | |
Jiachen Zhang | e6af9c9 | 2023-12-05 13:58:58 +0800 | [diff] [blame] | 5420 | return 0; |
Dave Chinner | 9e5987a7 | 2013-02-25 12:31:26 +1100 | [diff] [blame] | 5421 | } |
| 5422 | |
| 5423 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5424 | * Unmap (remove) blocks from a file. |
| 5425 | * If nexts is nonzero then the number of extents to remove is limited to |
| 5426 | * that value. If not all extents in the block range can be removed then |
| 5427 | * *done is set. |
| 5428 | */ |
Darrick J. Wong | a59eb5f | 2023-12-15 10:03:43 -0800 | [diff] [blame] | 5429 | static int |
Darrick J. Wong | 4453593 | 2016-10-03 09:11:29 -0700 | [diff] [blame] | 5430 | __xfs_bunmapi( |
Brian Foster | ccd9d91 | 2018-07-11 22:26:13 -0700 | [diff] [blame] | 5431 | struct xfs_trans *tp, /* transaction pointer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5432 | struct xfs_inode *ip, /* incore inode */ |
Christoph Hellwig | 8280f6e | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5433 | xfs_fileoff_t start, /* first file offset deleted */ |
Darrick J. Wong | 4453593 | 2016-10-03 09:11:29 -0700 | [diff] [blame] | 5434 | xfs_filblks_t *rlen, /* i/o: amount remaining */ |
Dave Chinner | e7d410a | 2022-04-21 10:46:09 +1000 | [diff] [blame] | 5435 | uint32_t flags, /* misc flags */ |
Brian Foster | 2af5284 | 2018-07-11 22:26:25 -0700 | [diff] [blame] | 5436 | xfs_extnum_t nexts) /* number of extents max */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5437 | { |
Brian Foster | ccd9d91 | 2018-07-11 22:26:13 -0700 | [diff] [blame] | 5438 | struct xfs_btree_cur *cur; /* bmap btree cursor */ |
| 5439 | struct xfs_bmbt_irec del; /* extent being deleted */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5440 | int error; /* error return value */ |
| 5441 | xfs_extnum_t extno; /* extent number in list */ |
Brian Foster | ccd9d91 | 2018-07-11 22:26:13 -0700 | [diff] [blame] | 5442 | struct xfs_bmbt_irec got; /* current extent record */ |
Christoph Hellwig | 3ba738d | 2018-07-17 16:51:50 -0700 | [diff] [blame] | 5443 | struct xfs_ifork *ifp; /* inode fork pointer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5444 | int isrt; /* freeing in rt area */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5445 | int logflags; /* transaction logging flags */ |
| 5446 | xfs_extlen_t mod; /* rt extent offset */ |
Darrick J. Wong | a71895c | 2019-11-11 12:53:22 -0800 | [diff] [blame] | 5447 | struct xfs_mount *mp = ip->i_mount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5448 | int tmp_logflags; /* partial logging flags */ |
| 5449 | int wasdel; /* was a delayed alloc extent */ |
| 5450 | int whichfork; /* data or attribute fork */ |
Darrick J. Wong | 4453593 | 2016-10-03 09:11:29 -0700 | [diff] [blame] | 5451 | xfs_filblks_t len = *rlen; /* length to unmap in file */ |
Christoph Hellwig | 8280f6e | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5452 | xfs_fileoff_t end; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5453 | struct xfs_iext_cursor icur; |
| 5454 | bool done = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5455 | |
Christoph Hellwig | 8280f6e | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5456 | trace_xfs_bunmap(ip, start, len, flags, _RET_IP_); |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 5457 | |
Darrick J. Wong | 3993bae | 2016-10-03 09:11:32 -0700 | [diff] [blame] | 5458 | whichfork = xfs_bmapi_whichfork(flags); |
| 5459 | ASSERT(whichfork != XFS_COW_FORK); |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 5460 | ifp = xfs_ifork_ptr(ip, whichfork); |
Darrick J. Wong | 1196f3f | 2024-02-22 12:31:51 -0800 | [diff] [blame] | 5461 | if (XFS_IS_CORRUPT(mp, !xfs_ifork_has_extents(ifp))) { |
| 5462 | xfs_bmap_mark_sick(ip, whichfork); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 5463 | return -EFSCORRUPTED; |
Darrick J. Wong | 1196f3f | 2024-02-22 12:31:51 -0800 | [diff] [blame] | 5464 | } |
Dave Chinner | 75c8c50f | 2021-08-18 18:46:53 -0700 | [diff] [blame] | 5465 | if (xfs_is_shutdown(mp)) |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 5466 | return -EIO; |
Christoph Hellwig | 5489327 | 2011-05-11 15:04:03 +0000 | [diff] [blame] | 5467 | |
Matthew Wilcox (Oracle) | 3fed24f | 2024-02-19 15:41:12 +0000 | [diff] [blame] | 5468 | xfs_assert_ilocked(ip, XFS_ILOCK_EXCL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5469 | ASSERT(len > 0); |
| 5470 | ASSERT(nexts >= 0); |
Christoph Hellwig | 8096b1e | 2011-12-18 20:00:07 +0000 | [diff] [blame] | 5471 | |
Christoph Hellwig | 862a804 | 2021-04-13 11:15:09 -0700 | [diff] [blame] | 5472 | error = xfs_iread_extents(tp, ip, whichfork); |
| 5473 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5474 | return error; |
Christoph Hellwig | 862a804 | 2021-04-13 11:15:09 -0700 | [diff] [blame] | 5475 | |
Eric Sandeen | 5d82930 | 2016-11-08 12:59:42 +1100 | [diff] [blame] | 5476 | if (xfs_iext_count(ifp) == 0) { |
Darrick J. Wong | 4453593 | 2016-10-03 09:11:29 -0700 | [diff] [blame] | 5477 | *rlen = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5478 | return 0; |
| 5479 | } |
Bill O'Donnell | ff6d6af | 2015-10-12 18:21:22 +1100 | [diff] [blame] | 5480 | XFS_STATS_INC(mp, xs_blk_unmap); |
Darrick J. Wong | 5049ff4 | 2024-02-22 12:43:36 -0800 | [diff] [blame] | 5481 | isrt = xfs_ifork_is_realtime(ip, whichfork); |
Christoph Hellwig | dc56015 | 2017-10-23 16:32:39 -0700 | [diff] [blame] | 5482 | end = start + len; |
Christoph Hellwig | b4e9181 | 2010-06-23 18:11:15 +1000 | [diff] [blame] | 5483 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5484 | if (!xfs_iext_lookup_extent_before(ip, ifp, &end, &icur, &got)) { |
Christoph Hellwig | dc56015 | 2017-10-23 16:32:39 -0700 | [diff] [blame] | 5485 | *rlen = 0; |
| 5486 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5487 | } |
Christoph Hellwig | dc56015 | 2017-10-23 16:32:39 -0700 | [diff] [blame] | 5488 | end--; |
Christoph Hellwig | 7efc794 | 2016-11-24 11:39:44 +1100 | [diff] [blame] | 5489 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5490 | logflags = 0; |
Christoph Hellwig | ac1e067 | 2021-04-13 11:15:11 -0700 | [diff] [blame] | 5491 | if (ifp->if_format == XFS_DINODE_FMT_BTREE) { |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 5492 | ASSERT(ifp->if_format == XFS_DINODE_FMT_BTREE); |
Christoph Hellwig | 561f7d1 | 2008-10-30 16:53:59 +1100 | [diff] [blame] | 5493 | cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5494 | } else |
| 5495 | cur = NULL; |
Kamal Dasu | 5575acc | 2012-02-23 00:41:39 +0000 | [diff] [blame] | 5496 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5497 | extno = 0; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5498 | while (end != (xfs_fileoff_t)-1 && end >= start && |
Darrick J. Wong | 4ed6435 | 2022-04-25 18:37:15 -0700 | [diff] [blame] | 5499 | (nexts == 0 || extno < nexts)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5500 | /* |
Christoph Hellwig | 8280f6e | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5501 | * Is the found extent after a hole in which end lives? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5502 | * Just back up to the previous extent, if so. |
| 5503 | */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5504 | if (got.br_startoff > end && |
| 5505 | !xfs_iext_prev_extent(ifp, &icur, &got)) { |
| 5506 | done = true; |
| 5507 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5508 | } |
| 5509 | /* |
| 5510 | * Is the last block of this extent before the range |
| 5511 | * we're supposed to delete? If so, we're done. |
| 5512 | */ |
Christoph Hellwig | 8280f6e | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5513 | end = XFS_FILEOFF_MIN(end, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5514 | got.br_startoff + got.br_blockcount - 1); |
Christoph Hellwig | 8280f6e | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5515 | if (end < start) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5516 | break; |
| 5517 | /* |
| 5518 | * Then deal with the (possibly delayed) allocated space |
| 5519 | * we found. |
| 5520 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5521 | del = got; |
Eric Sandeen | 9d87c31 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 5522 | wasdel = isnullstartblock(del.br_startblock); |
Christoph Hellwig | 5b094d6 | 2017-07-18 11:16:51 -0700 | [diff] [blame] | 5523 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5524 | if (got.br_startoff < start) { |
| 5525 | del.br_startoff = start; |
| 5526 | del.br_blockcount -= start - got.br_startoff; |
| 5527 | if (!wasdel) |
| 5528 | del.br_startblock += start - got.br_startoff; |
| 5529 | } |
Christoph Hellwig | 8280f6e | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5530 | if (del.br_startoff + del.br_blockcount > end + 1) |
| 5531 | del.br_blockcount = end + 1 - del.br_startoff; |
Darrick J. Wong | e1a4e37 | 2017-06-14 21:25:57 -0700 | [diff] [blame] | 5532 | |
Darrick J. Wong | 2b6a5ec | 2024-02-22 12:44:22 -0800 | [diff] [blame] | 5533 | if (!isrt || (flags & XFS_BMAPI_REMAP)) |
Dave Chinner | 0703a8e | 2018-06-08 09:54:22 -0700 | [diff] [blame] | 5534 | goto delete; |
| 5535 | |
Darrick J. Wong | 5dc3a80 | 2023-10-16 09:37:07 -0700 | [diff] [blame] | 5536 | mod = xfs_rtb_to_rtxoff(mp, |
| 5537 | del.br_startblock + del.br_blockcount); |
Dave Chinner | 0703a8e | 2018-06-08 09:54:22 -0700 | [diff] [blame] | 5538 | if (mod) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5539 | /* |
| 5540 | * Realtime extent not lined up at the end. |
| 5541 | * The extent could have been split into written |
| 5542 | * and unwritten pieces, or we could just be |
| 5543 | * unmapping part of it. But we can't really |
| 5544 | * get rid of part of a realtime extent. |
| 5545 | */ |
Christoph Hellwig | daa79ba | 2018-10-18 17:18:58 +1100 | [diff] [blame] | 5546 | if (del.br_state == XFS_EXT_UNWRITTEN) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5547 | /* |
| 5548 | * This piece is unwritten, or we're not |
| 5549 | * using unwritten extents. Skip over it. |
| 5550 | */ |
Darrick J. Wong | 2b6a5ec | 2024-02-22 12:44:22 -0800 | [diff] [blame] | 5551 | ASSERT((flags & XFS_BMAPI_REMAP) || end >= mod); |
Christoph Hellwig | 8280f6e | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5552 | end -= mod > del.br_blockcount ? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5553 | del.br_blockcount : mod; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5554 | if (end < got.br_startoff && |
| 5555 | !xfs_iext_prev_extent(ifp, &icur, &got)) { |
| 5556 | done = true; |
| 5557 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5558 | } |
| 5559 | continue; |
| 5560 | } |
| 5561 | /* |
| 5562 | * It's written, turn it unwritten. |
| 5563 | * This is better than zeroing it. |
| 5564 | */ |
| 5565 | ASSERT(del.br_state == XFS_EXT_NORM); |
Christoph Hellwig | a7e5d03 | 2016-03-02 09:58:21 +1100 | [diff] [blame] | 5566 | ASSERT(tp->t_blk_res > 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5567 | /* |
| 5568 | * If this spans a realtime extent boundary, |
| 5569 | * chop it back to the start of the one we end at. |
| 5570 | */ |
| 5571 | if (del.br_blockcount > mod) { |
| 5572 | del.br_startoff += del.br_blockcount - mod; |
| 5573 | del.br_startblock += del.br_blockcount - mod; |
| 5574 | del.br_blockcount = mod; |
| 5575 | } |
| 5576 | del.br_state = XFS_EXT_UNWRITTEN; |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 5577 | error = xfs_bmap_add_extent_unwritten_real(tp, ip, |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5578 | whichfork, &icur, &cur, &del, |
Brian Foster | 92f9da3 | 2018-07-11 22:26:28 -0700 | [diff] [blame] | 5579 | &logflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5580 | if (error) |
| 5581 | goto error0; |
| 5582 | goto nodelete; |
| 5583 | } |
Darrick J. Wong | 5dc3a80 | 2023-10-16 09:37:07 -0700 | [diff] [blame] | 5584 | |
| 5585 | mod = xfs_rtb_to_rtxoff(mp, del.br_startblock); |
Dave Chinner | 0703a8e | 2018-06-08 09:54:22 -0700 | [diff] [blame] | 5586 | if (mod) { |
Omar Sandoval | 0c4da70 | 2019-11-26 16:58:07 -0800 | [diff] [blame] | 5587 | xfs_extlen_t off = mp->m_sb.sb_rextsize - mod; |
| 5588 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5589 | /* |
| 5590 | * Realtime extent is lined up at the end but not |
| 5591 | * at the front. We'll get rid of full extents if |
| 5592 | * we can. |
| 5593 | */ |
Omar Sandoval | 0c4da70 | 2019-11-26 16:58:07 -0800 | [diff] [blame] | 5594 | if (del.br_blockcount > off) { |
| 5595 | del.br_blockcount -= off; |
| 5596 | del.br_startoff += off; |
| 5597 | del.br_startblock += off; |
Christoph Hellwig | daa79ba | 2018-10-18 17:18:58 +1100 | [diff] [blame] | 5598 | } else if (del.br_startoff == start && |
| 5599 | (del.br_state == XFS_EXT_UNWRITTEN || |
| 5600 | tp->t_blk_res == 0)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5601 | /* |
| 5602 | * Can't make it unwritten. There isn't |
| 5603 | * a full extent here so just skip it. |
| 5604 | */ |
Christoph Hellwig | 8280f6e | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5605 | ASSERT(end >= del.br_blockcount); |
| 5606 | end -= del.br_blockcount; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5607 | if (got.br_startoff > end && |
| 5608 | !xfs_iext_prev_extent(ifp, &icur, &got)) { |
| 5609 | done = true; |
| 5610 | break; |
| 5611 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5612 | continue; |
| 5613 | } else if (del.br_state == XFS_EXT_UNWRITTEN) { |
Christoph Hellwig | 7efc794 | 2016-11-24 11:39:44 +1100 | [diff] [blame] | 5614 | struct xfs_bmbt_irec prev; |
Omar Sandoval | 0c4da70 | 2019-11-26 16:58:07 -0800 | [diff] [blame] | 5615 | xfs_fileoff_t unwrite_start; |
Christoph Hellwig | 7efc794 | 2016-11-24 11:39:44 +1100 | [diff] [blame] | 5616 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5617 | /* |
| 5618 | * This one is already unwritten. |
| 5619 | * It must have a written left neighbor. |
| 5620 | * Unwrite the killed part of that one and |
| 5621 | * try again. |
| 5622 | */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5623 | if (!xfs_iext_prev_extent(ifp, &icur, &prev)) |
| 5624 | ASSERT(0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5625 | ASSERT(prev.br_state == XFS_EXT_NORM); |
Eric Sandeen | 9d87c31 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 5626 | ASSERT(!isnullstartblock(prev.br_startblock)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5627 | ASSERT(del.br_startblock == |
| 5628 | prev.br_startblock + prev.br_blockcount); |
Omar Sandoval | 0c4da70 | 2019-11-26 16:58:07 -0800 | [diff] [blame] | 5629 | unwrite_start = max3(start, |
| 5630 | del.br_startoff - mod, |
| 5631 | prev.br_startoff); |
| 5632 | mod = unwrite_start - prev.br_startoff; |
| 5633 | prev.br_startoff = unwrite_start; |
| 5634 | prev.br_startblock += mod; |
| 5635 | prev.br_blockcount -= mod; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5636 | prev.br_state = XFS_EXT_UNWRITTEN; |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 5637 | error = xfs_bmap_add_extent_unwritten_real(tp, |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5638 | ip, whichfork, &icur, &cur, |
Brian Foster | 92f9da3 | 2018-07-11 22:26:28 -0700 | [diff] [blame] | 5639 | &prev, &logflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5640 | if (error) |
| 5641 | goto error0; |
| 5642 | goto nodelete; |
| 5643 | } else { |
| 5644 | ASSERT(del.br_state == XFS_EXT_NORM); |
| 5645 | del.br_state = XFS_EXT_UNWRITTEN; |
Christoph Hellwig | a5bd606b | 2011-09-18 20:40:54 +0000 | [diff] [blame] | 5646 | error = xfs_bmap_add_extent_unwritten_real(tp, |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5647 | ip, whichfork, &icur, &cur, |
Brian Foster | 92f9da3 | 2018-07-11 22:26:28 -0700 | [diff] [blame] | 5648 | &del, &logflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5649 | if (error) |
| 5650 | goto error0; |
| 5651 | goto nodelete; |
| 5652 | } |
| 5653 | } |
Nathan Scott | 06d10dd | 2005-06-21 15:48:47 +1000 | [diff] [blame] | 5654 | |
Dave Chinner | 0703a8e | 2018-06-08 09:54:22 -0700 | [diff] [blame] | 5655 | delete: |
Brian Foster | b2706a0 | 2016-03-15 11:42:46 +1100 | [diff] [blame] | 5656 | if (wasdel) { |
Christoph Hellwig | cc3c92e | 2024-04-30 14:58:22 +0200 | [diff] [blame] | 5657 | xfs_bmap_del_extent_delay(ip, whichfork, &icur, &got, &del); |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5658 | } else { |
Brian Foster | 81ba8f3 | 2018-07-11 22:26:16 -0700 | [diff] [blame] | 5659 | error = xfs_bmap_del_extent_real(ip, tp, &icur, cur, |
| 5660 | &del, &tmp_logflags, whichfork, |
Christoph Hellwig | e1d7553 | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5661 | flags); |
| 5662 | logflags |= tmp_logflags; |
Christoph Hellwig | cc3c92e | 2024-04-30 14:58:22 +0200 | [diff] [blame] | 5663 | if (error) |
| 5664 | goto error0; |
Christoph Hellwig | b213d69 | 2017-10-17 14:16:20 -0700 | [diff] [blame] | 5665 | } |
Brian Foster | b2706a0 | 2016-03-15 11:42:46 +1100 | [diff] [blame] | 5666 | |
Christoph Hellwig | 8280f6e | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5667 | end = del.br_startoff - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5668 | nodelete: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5669 | /* |
| 5670 | * If not done go on to the next (previous) record. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5671 | */ |
Christoph Hellwig | 8280f6e | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5672 | if (end != (xfs_fileoff_t)-1 && end >= start) { |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5673 | if (!xfs_iext_get_extent(ifp, &icur, &got) || |
| 5674 | (got.br_startoff > end && |
| 5675 | !xfs_iext_prev_extent(ifp, &icur, &got))) { |
| 5676 | done = true; |
| 5677 | break; |
Christoph Hellwig | 00239ac | 2011-05-11 15:04:08 +0000 | [diff] [blame] | 5678 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5679 | extno++; |
| 5680 | } |
| 5681 | } |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5682 | if (done || end == (xfs_fileoff_t)-1 || end < start) |
Darrick J. Wong | 4453593 | 2016-10-03 09:11:29 -0700 | [diff] [blame] | 5683 | *rlen = 0; |
| 5684 | else |
Christoph Hellwig | 8280f6e | 2017-10-17 14:16:21 -0700 | [diff] [blame] | 5685 | *rlen = end - start + 1; |
Christoph Hellwig | 8096b1e | 2011-12-18 20:00:07 +0000 | [diff] [blame] | 5686 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5687 | /* |
| 5688 | * Convert to a btree if necessary. |
| 5689 | */ |
Christoph Hellwig | 8096b1e | 2011-12-18 20:00:07 +0000 | [diff] [blame] | 5690 | if (xfs_bmap_needs_btree(ip, whichfork)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5691 | ASSERT(cur == NULL); |
Brian Foster | 280253d | 2018-07-11 22:26:29 -0700 | [diff] [blame] | 5692 | error = xfs_bmap_extents_to_btree(tp, ip, &cur, 0, |
| 5693 | &tmp_logflags, whichfork); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5694 | logflags |= tmp_logflags; |
Christoph Hellwig | b101e33 | 2019-02-15 08:02:47 -0800 | [diff] [blame] | 5695 | } else { |
| 5696 | error = xfs_bmap_btree_to_extents(tp, ip, cur, &logflags, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5697 | whichfork); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5698 | } |
Christoph Hellwig | b101e33 | 2019-02-15 08:02:47 -0800 | [diff] [blame] | 5699 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5700 | error0: |
| 5701 | /* |
| 5702 | * Log everything. Do this after conversion, there's no point in |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 5703 | * logging the extent records if we've converted to btree format. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5704 | */ |
Eric Sandeen | 9d87c31 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 5705 | if ((logflags & xfs_ilog_fext(whichfork)) && |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 5706 | ifp->if_format != XFS_DINODE_FMT_EXTENTS) |
Eric Sandeen | 9d87c31 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 5707 | logflags &= ~xfs_ilog_fext(whichfork); |
| 5708 | else if ((logflags & xfs_ilog_fbroot(whichfork)) && |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 5709 | ifp->if_format != XFS_DINODE_FMT_BTREE) |
Eric Sandeen | 9d87c31 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 5710 | logflags &= ~xfs_ilog_fbroot(whichfork); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5711 | /* |
| 5712 | * Log inode even in the error case, if the transaction |
| 5713 | * is dirty we'll need to shut down the filesystem. |
| 5714 | */ |
| 5715 | if (logflags) |
| 5716 | xfs_trans_log_inode(tp, ip, logflags); |
| 5717 | if (cur) { |
Brian Foster | cf612de | 2018-07-11 22:26:29 -0700 | [diff] [blame] | 5718 | if (!error) |
Christoph Hellwig | 88ee2f4 | 2024-02-22 12:37:03 -0800 | [diff] [blame] | 5719 | cur->bc_bmap.allocated = 0; |
Darrick J. Wong | 0b04b6b8 | 2018-07-19 12:26:31 -0700 | [diff] [blame] | 5720 | xfs_btree_del_cursor(cur, error); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5721 | } |
| 5722 | return error; |
| 5723 | } |
Namjae Jeon | e1d8fb8 | 2014-02-24 10:58:19 +1100 | [diff] [blame] | 5724 | |
Darrick J. Wong | 4453593 | 2016-10-03 09:11:29 -0700 | [diff] [blame] | 5725 | /* Unmap a range of a file. */ |
| 5726 | int |
| 5727 | xfs_bunmapi( |
| 5728 | xfs_trans_t *tp, |
| 5729 | struct xfs_inode *ip, |
| 5730 | xfs_fileoff_t bno, |
| 5731 | xfs_filblks_t len, |
Dave Chinner | e7d410a | 2022-04-21 10:46:09 +1000 | [diff] [blame] | 5732 | uint32_t flags, |
Darrick J. Wong | 4453593 | 2016-10-03 09:11:29 -0700 | [diff] [blame] | 5733 | xfs_extnum_t nexts, |
Darrick J. Wong | 4453593 | 2016-10-03 09:11:29 -0700 | [diff] [blame] | 5734 | int *done) |
| 5735 | { |
| 5736 | int error; |
| 5737 | |
Brian Foster | 2af5284 | 2018-07-11 22:26:25 -0700 | [diff] [blame] | 5738 | error = __xfs_bunmapi(tp, ip, bno, &len, flags, nexts); |
Darrick J. Wong | 4453593 | 2016-10-03 09:11:29 -0700 | [diff] [blame] | 5739 | *done = (len == 0); |
| 5740 | return error; |
| 5741 | } |
| 5742 | |
Namjae Jeon | e1d8fb8 | 2014-02-24 10:58:19 +1100 | [diff] [blame] | 5743 | /* |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5744 | * Determine whether an extent shift can be accomplished by a merge with the |
| 5745 | * extent that precedes the target hole of the shift. |
| 5746 | */ |
| 5747 | STATIC bool |
| 5748 | xfs_bmse_can_merge( |
| 5749 | struct xfs_bmbt_irec *left, /* preceding extent */ |
| 5750 | struct xfs_bmbt_irec *got, /* current extent to shift */ |
| 5751 | xfs_fileoff_t shift) /* shift fsb */ |
| 5752 | { |
| 5753 | xfs_fileoff_t startoff; |
| 5754 | |
| 5755 | startoff = got->br_startoff - shift; |
| 5756 | |
| 5757 | /* |
| 5758 | * The extent, once shifted, must be adjacent in-file and on-disk with |
| 5759 | * the preceding extent. |
| 5760 | */ |
| 5761 | if ((left->br_startoff + left->br_blockcount != startoff) || |
| 5762 | (left->br_startblock + left->br_blockcount != got->br_startblock) || |
| 5763 | (left->br_state != got->br_state) || |
Chandan Babu R | 95f0b95 | 2021-08-09 12:05:22 +0530 | [diff] [blame] | 5764 | (left->br_blockcount + got->br_blockcount > XFS_MAX_BMBT_EXTLEN)) |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5765 | return false; |
| 5766 | |
| 5767 | return true; |
| 5768 | } |
| 5769 | |
| 5770 | /* |
| 5771 | * A bmap extent shift adjusts the file offset of an extent to fill a preceding |
| 5772 | * hole in the file. If an extent shift would result in the extent being fully |
| 5773 | * adjacent to the extent that currently precedes the hole, we can merge with |
| 5774 | * the preceding extent rather than do the shift. |
| 5775 | * |
| 5776 | * This function assumes the caller has verified a shift-by-merge is possible |
| 5777 | * with the provided extents via xfs_bmse_can_merge(). |
| 5778 | */ |
| 5779 | STATIC int |
| 5780 | xfs_bmse_merge( |
Brian Foster | 0f37d17 | 2018-08-01 07:20:34 -0700 | [diff] [blame] | 5781 | struct xfs_trans *tp, |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5782 | struct xfs_inode *ip, |
| 5783 | int whichfork, |
| 5784 | xfs_fileoff_t shift, /* shift fsb */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5785 | struct xfs_iext_cursor *icur, |
Christoph Hellwig | 4da6b51 | 2017-08-29 15:44:13 -0700 | [diff] [blame] | 5786 | struct xfs_bmbt_irec *got, /* extent to shift */ |
| 5787 | struct xfs_bmbt_irec *left, /* preceding extent */ |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5788 | struct xfs_btree_cur *cur, |
Brian Foster | 0f37d17 | 2018-08-01 07:20:34 -0700 | [diff] [blame] | 5789 | int *logflags) /* output */ |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5790 | { |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 5791 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Christoph Hellwig | 4da6b51 | 2017-08-29 15:44:13 -0700 | [diff] [blame] | 5792 | struct xfs_bmbt_irec new; |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5793 | xfs_filblks_t blockcount; |
| 5794 | int error, i; |
Eric Sandeen | 5fb5aee | 2015-02-23 22:39:13 +1100 | [diff] [blame] | 5795 | struct xfs_mount *mp = ip->i_mount; |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5796 | |
Christoph Hellwig | 4da6b51 | 2017-08-29 15:44:13 -0700 | [diff] [blame] | 5797 | blockcount = left->br_blockcount + got->br_blockcount; |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5798 | |
Matthew Wilcox (Oracle) | 3fed24f | 2024-02-19 15:41:12 +0000 | [diff] [blame] | 5799 | xfs_assert_ilocked(ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL); |
Christoph Hellwig | 4da6b51 | 2017-08-29 15:44:13 -0700 | [diff] [blame] | 5800 | ASSERT(xfs_bmse_can_merge(left, got, shift)); |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5801 | |
Christoph Hellwig | 4da6b51 | 2017-08-29 15:44:13 -0700 | [diff] [blame] | 5802 | new = *left; |
| 5803 | new.br_blockcount = blockcount; |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5804 | |
| 5805 | /* |
| 5806 | * Update the on-disk extent count, the btree if necessary and log the |
| 5807 | * inode. |
| 5808 | */ |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 5809 | ifp->if_nextents--; |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5810 | *logflags |= XFS_ILOG_CORE; |
| 5811 | if (!cur) { |
| 5812 | *logflags |= XFS_ILOG_DEXT; |
Christoph Hellwig | 4da6b51 | 2017-08-29 15:44:13 -0700 | [diff] [blame] | 5813 | goto done; |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5814 | } |
| 5815 | |
| 5816 | /* lookup and remove the extent to merge */ |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 5817 | error = xfs_bmbt_lookup_eq(cur, got, &i); |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5818 | if (error) |
Dave Chinner | 4db431f | 2014-12-04 09:42:40 +1100 | [diff] [blame] | 5819 | return error; |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 5820 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
| 5821 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 5822 | return -EFSCORRUPTED; |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 5823 | } |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5824 | |
| 5825 | error = xfs_btree_delete(cur, &i); |
| 5826 | if (error) |
Dave Chinner | 4db431f | 2014-12-04 09:42:40 +1100 | [diff] [blame] | 5827 | return error; |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 5828 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
| 5829 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 5830 | return -EFSCORRUPTED; |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 5831 | } |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5832 | |
| 5833 | /* lookup and update size of the previous extent */ |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 5834 | error = xfs_bmbt_lookup_eq(cur, left, &i); |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5835 | if (error) |
Dave Chinner | 4db431f | 2014-12-04 09:42:40 +1100 | [diff] [blame] | 5836 | return error; |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 5837 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
| 5838 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 5839 | return -EFSCORRUPTED; |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 5840 | } |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5841 | |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 5842 | error = xfs_bmbt_update(cur, &new); |
Christoph Hellwig | 4da6b51 | 2017-08-29 15:44:13 -0700 | [diff] [blame] | 5843 | if (error) |
| 5844 | return error; |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5845 | |
Brian Foster | e20e174 | 2019-09-18 17:50:45 -0700 | [diff] [blame] | 5846 | /* change to extent format if required after extent removal */ |
| 5847 | error = xfs_bmap_btree_to_extents(tp, ip, cur, logflags, whichfork); |
| 5848 | if (error) |
| 5849 | return error; |
| 5850 | |
Christoph Hellwig | 4da6b51 | 2017-08-29 15:44:13 -0700 | [diff] [blame] | 5851 | done: |
Christoph Hellwig | c38ccf5 | 2017-11-03 10:34:47 -0700 | [diff] [blame] | 5852 | xfs_iext_remove(ip, icur, 0); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 5853 | xfs_iext_prev(ifp, icur); |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5854 | xfs_iext_update_extent(ip, xfs_bmap_fork_to_state(whichfork), icur, |
| 5855 | &new); |
Christoph Hellwig | 4da6b51 | 2017-08-29 15:44:13 -0700 | [diff] [blame] | 5856 | |
Darrick J. Wong | 4cc1ee5 | 2017-08-30 16:06:36 -0700 | [diff] [blame] | 5857 | /* update reverse mapping. rmap functions merge the rmaps for us */ |
Darrick J. Wong | bc46ac6 | 2019-08-26 17:06:03 -0700 | [diff] [blame] | 5858 | xfs_rmap_unmap_extent(tp, ip, whichfork, got); |
Darrick J. Wong | 4cc1ee5 | 2017-08-30 16:06:36 -0700 | [diff] [blame] | 5859 | memcpy(&new, got, sizeof(new)); |
| 5860 | new.br_startoff = left->br_startoff + left->br_blockcount; |
Darrick J. Wong | bc46ac6 | 2019-08-26 17:06:03 -0700 | [diff] [blame] | 5861 | xfs_rmap_map_extent(tp, ip, whichfork, &new); |
| 5862 | return 0; |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5863 | } |
| 5864 | |
Christoph Hellwig | bf80628 | 2017-10-19 11:07:34 -0700 | [diff] [blame] | 5865 | static int |
| 5866 | xfs_bmap_shift_update_extent( |
Brian Foster | 0f37d17 | 2018-08-01 07:20:34 -0700 | [diff] [blame] | 5867 | struct xfs_trans *tp, |
Christoph Hellwig | bf80628 | 2017-10-19 11:07:34 -0700 | [diff] [blame] | 5868 | struct xfs_inode *ip, |
| 5869 | int whichfork, |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5870 | struct xfs_iext_cursor *icur, |
Christoph Hellwig | bf80628 | 2017-10-19 11:07:34 -0700 | [diff] [blame] | 5871 | struct xfs_bmbt_irec *got, |
| 5872 | struct xfs_btree_cur *cur, |
| 5873 | int *logflags, |
Christoph Hellwig | bf80628 | 2017-10-19 11:07:34 -0700 | [diff] [blame] | 5874 | xfs_fileoff_t startoff) |
Brian Foster | a979bdf | 2014-09-23 15:39:04 +1000 | [diff] [blame] | 5875 | { |
Christoph Hellwig | bf80628 | 2017-10-19 11:07:34 -0700 | [diff] [blame] | 5876 | struct xfs_mount *mp = ip->i_mount; |
Christoph Hellwig | 11f75b3 | 2017-10-19 11:08:51 -0700 | [diff] [blame] | 5877 | struct xfs_bmbt_irec prev = *got; |
Christoph Hellwig | bf80628 | 2017-10-19 11:07:34 -0700 | [diff] [blame] | 5878 | int error, i; |
Brian Foster | a979bdf | 2014-09-23 15:39:04 +1000 | [diff] [blame] | 5879 | |
Christoph Hellwig | 4da6b51 | 2017-08-29 15:44:13 -0700 | [diff] [blame] | 5880 | *logflags |= XFS_ILOG_CORE; |
| 5881 | |
Christoph Hellwig | 11f75b3 | 2017-10-19 11:08:51 -0700 | [diff] [blame] | 5882 | got->br_startoff = startoff; |
Christoph Hellwig | 4da6b51 | 2017-08-29 15:44:13 -0700 | [diff] [blame] | 5883 | |
| 5884 | if (cur) { |
Christoph Hellwig | 11f75b3 | 2017-10-19 11:08:51 -0700 | [diff] [blame] | 5885 | error = xfs_bmbt_lookup_eq(cur, &prev, &i); |
Christoph Hellwig | 4da6b51 | 2017-08-29 15:44:13 -0700 | [diff] [blame] | 5886 | if (error) |
| 5887 | return error; |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 5888 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
| 5889 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 5890 | return -EFSCORRUPTED; |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 5891 | } |
Christoph Hellwig | 4da6b51 | 2017-08-29 15:44:13 -0700 | [diff] [blame] | 5892 | |
Christoph Hellwig | 11f75b3 | 2017-10-19 11:08:51 -0700 | [diff] [blame] | 5893 | error = xfs_bmbt_update(cur, got); |
Christoph Hellwig | 4da6b51 | 2017-08-29 15:44:13 -0700 | [diff] [blame] | 5894 | if (error) |
| 5895 | return error; |
| 5896 | } else { |
| 5897 | *logflags |= XFS_ILOG_DEXT; |
| 5898 | } |
| 5899 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5900 | xfs_iext_update_extent(ip, xfs_bmap_fork_to_state(whichfork), icur, |
| 5901 | got); |
Brian Foster | a979bdf | 2014-09-23 15:39:04 +1000 | [diff] [blame] | 5902 | |
Darrick J. Wong | 9c19464 | 2016-08-03 12:16:05 +1000 | [diff] [blame] | 5903 | /* update reverse mapping */ |
Darrick J. Wong | bc46ac6 | 2019-08-26 17:06:03 -0700 | [diff] [blame] | 5904 | xfs_rmap_unmap_extent(tp, ip, whichfork, &prev); |
| 5905 | xfs_rmap_map_extent(tp, ip, whichfork, got); |
| 5906 | return 0; |
Brian Foster | a979bdf | 2014-09-23 15:39:04 +1000 | [diff] [blame] | 5907 | } |
| 5908 | |
Namjae Jeon | e1d8fb8 | 2014-02-24 10:58:19 +1100 | [diff] [blame] | 5909 | int |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 5910 | xfs_bmap_collapse_extents( |
Namjae Jeon | e1d8fb8 | 2014-02-24 10:58:19 +1100 | [diff] [blame] | 5911 | struct xfs_trans *tp, |
| 5912 | struct xfs_inode *ip, |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 5913 | xfs_fileoff_t *next_fsb, |
Namjae Jeon | e1d8fb8 | 2014-02-24 10:58:19 +1100 | [diff] [blame] | 5914 | xfs_fileoff_t offset_shift_fsb, |
Brian Foster | 333f950 | 2018-07-11 22:26:27 -0700 | [diff] [blame] | 5915 | bool *done) |
Namjae Jeon | e1d8fb8 | 2014-02-24 10:58:19 +1100 | [diff] [blame] | 5916 | { |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 5917 | int whichfork = XFS_DATA_FORK; |
| 5918 | struct xfs_mount *mp = ip->i_mount; |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 5919 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 5920 | struct xfs_btree_cur *cur = NULL; |
Christoph Hellwig | bf80628 | 2017-10-19 11:07:34 -0700 | [diff] [blame] | 5921 | struct xfs_bmbt_irec got, prev; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5922 | struct xfs_iext_cursor icur; |
Christoph Hellwig | bf80628 | 2017-10-19 11:07:34 -0700 | [diff] [blame] | 5923 | xfs_fileoff_t new_startoff; |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 5924 | int error = 0; |
| 5925 | int logflags = 0; |
Namjae Jeon | e1d8fb8 | 2014-02-24 10:58:19 +1100 | [diff] [blame] | 5926 | |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 5927 | if (XFS_IS_CORRUPT(mp, !xfs_ifork_has_extents(ifp)) || |
Darrick J. Wong | a71895c | 2019-11-11 12:53:22 -0800 | [diff] [blame] | 5928 | XFS_TEST_ERROR(false, mp, XFS_ERRTAG_BMAPIFORMAT)) { |
Darrick J. Wong | 1196f3f | 2024-02-22 12:31:51 -0800 | [diff] [blame] | 5929 | xfs_bmap_mark_sick(ip, whichfork); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 5930 | return -EFSCORRUPTED; |
Namjae Jeon | e1d8fb8 | 2014-02-24 10:58:19 +1100 | [diff] [blame] | 5931 | } |
| 5932 | |
Dave Chinner | 75c8c50f | 2021-08-18 18:46:53 -0700 | [diff] [blame] | 5933 | if (xfs_is_shutdown(mp)) |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 5934 | return -EIO; |
Namjae Jeon | e1d8fb8 | 2014-02-24 10:58:19 +1100 | [diff] [blame] | 5935 | |
Matthew Wilcox (Oracle) | 3fed24f | 2024-02-19 15:41:12 +0000 | [diff] [blame] | 5936 | xfs_assert_ilocked(ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL); |
Namjae Jeon | e1d8fb8 | 2014-02-24 10:58:19 +1100 | [diff] [blame] | 5937 | |
Christoph Hellwig | 862a804 | 2021-04-13 11:15:09 -0700 | [diff] [blame] | 5938 | error = xfs_iread_extents(tp, ip, whichfork); |
| 5939 | if (error) |
| 5940 | return error; |
Namjae Jeon | e1d8fb8 | 2014-02-24 10:58:19 +1100 | [diff] [blame] | 5941 | |
Christoph Hellwig | e9e66df | 2024-02-22 12:35:13 -0800 | [diff] [blame] | 5942 | if (ifp->if_format == XFS_DINODE_FMT_BTREE) |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5943 | cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); |
Brian Foster | ddb19e3 | 2014-09-23 15:38:09 +1000 | [diff] [blame] | 5944 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5945 | if (!xfs_iext_lookup_extent(ip, ifp, *next_fsb, &icur, &got)) { |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 5946 | *done = true; |
| 5947 | goto del_cursor; |
| 5948 | } |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 5949 | if (XFS_IS_CORRUPT(mp, isnullstartblock(got.br_startblock))) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 5950 | xfs_bmap_mark_sick(ip, whichfork); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 5951 | error = -EFSCORRUPTED; |
| 5952 | goto del_cursor; |
| 5953 | } |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 5954 | |
Christoph Hellwig | bf80628 | 2017-10-19 11:07:34 -0700 | [diff] [blame] | 5955 | new_startoff = got.br_startoff - offset_shift_fsb; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5956 | if (xfs_iext_peek_prev_extent(ifp, &icur, &prev)) { |
Christoph Hellwig | bf80628 | 2017-10-19 11:07:34 -0700 | [diff] [blame] | 5957 | if (new_startoff < prev.br_startoff + prev.br_blockcount) { |
| 5958 | error = -EINVAL; |
| 5959 | goto del_cursor; |
| 5960 | } |
| 5961 | |
Christoph Hellwig | bf80628 | 2017-10-19 11:07:34 -0700 | [diff] [blame] | 5962 | if (xfs_bmse_can_merge(&prev, &got, offset_shift_fsb)) { |
Brian Foster | 0f37d17 | 2018-08-01 07:20:34 -0700 | [diff] [blame] | 5963 | error = xfs_bmse_merge(tp, ip, whichfork, |
| 5964 | offset_shift_fsb, &icur, &got, &prev, |
| 5965 | cur, &logflags); |
Christoph Hellwig | bf80628 | 2017-10-19 11:07:34 -0700 | [diff] [blame] | 5966 | if (error) |
| 5967 | goto del_cursor; |
| 5968 | goto done; |
| 5969 | } |
| 5970 | } else { |
| 5971 | if (got.br_startoff < offset_shift_fsb) { |
| 5972 | error = -EINVAL; |
| 5973 | goto del_cursor; |
| 5974 | } |
| 5975 | } |
| 5976 | |
Brian Foster | 0f37d17 | 2018-08-01 07:20:34 -0700 | [diff] [blame] | 5977 | error = xfs_bmap_shift_update_extent(tp, ip, whichfork, &icur, &got, |
| 5978 | cur, &logflags, new_startoff); |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 5979 | if (error) |
| 5980 | goto del_cursor; |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 5981 | |
Christoph Hellwig | 4263036 | 2017-11-03 10:34:41 -0700 | [diff] [blame] | 5982 | done: |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 5983 | if (!xfs_iext_next_extent(ifp, &icur, &got)) { |
| 5984 | *done = true; |
| 5985 | goto del_cursor; |
Christoph Hellwig | 40591bd | 2017-10-19 11:08:51 -0700 | [diff] [blame] | 5986 | } |
| 5987 | |
Christoph Hellwig | bf80628 | 2017-10-19 11:07:34 -0700 | [diff] [blame] | 5988 | *next_fsb = got.br_startoff; |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 5989 | del_cursor: |
| 5990 | if (cur) |
Darrick J. Wong | 0b04b6b8 | 2018-07-19 12:26:31 -0700 | [diff] [blame] | 5991 | xfs_btree_del_cursor(cur, error); |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 5992 | if (logflags) |
| 5993 | xfs_trans_log_inode(tp, ip, logflags); |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 5994 | return error; |
| 5995 | } |
| 5996 | |
Darrick J. Wong | f62cb48 | 2018-06-21 23:26:57 -0700 | [diff] [blame] | 5997 | /* Make sure we won't be right-shifting an extent past the maximum bound. */ |
| 5998 | int |
| 5999 | xfs_bmap_can_insert_extents( |
| 6000 | struct xfs_inode *ip, |
| 6001 | xfs_fileoff_t off, |
| 6002 | xfs_fileoff_t shift) |
| 6003 | { |
| 6004 | struct xfs_bmbt_irec got; |
| 6005 | int is_empty; |
| 6006 | int error = 0; |
| 6007 | |
Matthew Wilcox (Oracle) | 3fed24f | 2024-02-19 15:41:12 +0000 | [diff] [blame] | 6008 | xfs_assert_ilocked(ip, XFS_IOLOCK_EXCL); |
Darrick J. Wong | f62cb48 | 2018-06-21 23:26:57 -0700 | [diff] [blame] | 6009 | |
Dave Chinner | 75c8c50f | 2021-08-18 18:46:53 -0700 | [diff] [blame] | 6010 | if (xfs_is_shutdown(ip->i_mount)) |
Darrick J. Wong | f62cb48 | 2018-06-21 23:26:57 -0700 | [diff] [blame] | 6011 | return -EIO; |
| 6012 | |
| 6013 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
| 6014 | error = xfs_bmap_last_extent(NULL, ip, XFS_DATA_FORK, &got, &is_empty); |
| 6015 | if (!error && !is_empty && got.br_startoff >= off && |
| 6016 | ((got.br_startoff + shift) & BMBT_STARTOFF_MASK) < got.br_startoff) |
| 6017 | error = -EINVAL; |
| 6018 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
| 6019 | |
| 6020 | return error; |
| 6021 | } |
| 6022 | |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 6023 | int |
| 6024 | xfs_bmap_insert_extents( |
| 6025 | struct xfs_trans *tp, |
| 6026 | struct xfs_inode *ip, |
| 6027 | xfs_fileoff_t *next_fsb, |
| 6028 | xfs_fileoff_t offset_shift_fsb, |
| 6029 | bool *done, |
Brian Foster | 333f950 | 2018-07-11 22:26:27 -0700 | [diff] [blame] | 6030 | xfs_fileoff_t stop_fsb) |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 6031 | { |
| 6032 | int whichfork = XFS_DATA_FORK; |
| 6033 | struct xfs_mount *mp = ip->i_mount; |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 6034 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 6035 | struct xfs_btree_cur *cur = NULL; |
Christoph Hellwig | 5936dc5 | 2017-10-19 11:08:52 -0700 | [diff] [blame] | 6036 | struct xfs_bmbt_irec got, next; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 6037 | struct xfs_iext_cursor icur; |
Christoph Hellwig | bf80628 | 2017-10-19 11:07:34 -0700 | [diff] [blame] | 6038 | xfs_fileoff_t new_startoff; |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 6039 | int error = 0; |
| 6040 | int logflags = 0; |
| 6041 | |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 6042 | if (XFS_IS_CORRUPT(mp, !xfs_ifork_has_extents(ifp)) || |
Darrick J. Wong | a71895c | 2019-11-11 12:53:22 -0800 | [diff] [blame] | 6043 | XFS_TEST_ERROR(false, mp, XFS_ERRTAG_BMAPIFORMAT)) { |
Darrick J. Wong | 1196f3f | 2024-02-22 12:31:51 -0800 | [diff] [blame] | 6044 | xfs_bmap_mark_sick(ip, whichfork); |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 6045 | return -EFSCORRUPTED; |
| 6046 | } |
| 6047 | |
Dave Chinner | 75c8c50f | 2021-08-18 18:46:53 -0700 | [diff] [blame] | 6048 | if (xfs_is_shutdown(mp)) |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 6049 | return -EIO; |
| 6050 | |
Matthew Wilcox (Oracle) | 3fed24f | 2024-02-19 15:41:12 +0000 | [diff] [blame] | 6051 | xfs_assert_ilocked(ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL); |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 6052 | |
Christoph Hellwig | 862a804 | 2021-04-13 11:15:09 -0700 | [diff] [blame] | 6053 | error = xfs_iread_extents(tp, ip, whichfork); |
| 6054 | if (error) |
| 6055 | return error; |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 6056 | |
Christoph Hellwig | e9e66df | 2024-02-22 12:35:13 -0800 | [diff] [blame] | 6057 | if (ifp->if_format == XFS_DINODE_FMT_BTREE) |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 6058 | cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 6059 | |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6060 | if (*next_fsb == NULLFSBLOCK) { |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 6061 | xfs_iext_last(ifp, &icur); |
| 6062 | if (!xfs_iext_get_extent(ifp, &icur, &got) || |
Christoph Hellwig | 5936dc5 | 2017-10-19 11:08:52 -0700 | [diff] [blame] | 6063 | stop_fsb > got.br_startoff) { |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 6064 | *done = true; |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6065 | goto del_cursor; |
| 6066 | } |
Christoph Hellwig | 05b7c8a | 2017-08-29 15:44:12 -0700 | [diff] [blame] | 6067 | } else { |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 6068 | if (!xfs_iext_lookup_extent(ip, ifp, *next_fsb, &icur, &got)) { |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 6069 | *done = true; |
Christoph Hellwig | 05b7c8a | 2017-08-29 15:44:12 -0700 | [diff] [blame] | 6070 | goto del_cursor; |
| 6071 | } |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6072 | } |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 6073 | if (XFS_IS_CORRUPT(mp, isnullstartblock(got.br_startblock))) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 6074 | xfs_bmap_mark_sick(ip, whichfork); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 6075 | error = -EFSCORRUPTED; |
| 6076 | goto del_cursor; |
| 6077 | } |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6078 | |
Brian Foster | d0c2204 | 2019-12-11 13:18:38 -0800 | [diff] [blame] | 6079 | if (XFS_IS_CORRUPT(mp, stop_fsb > got.br_startoff)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 6080 | xfs_bmap_mark_sick(ip, whichfork); |
Darrick J. Wong | c2414ad | 2019-10-28 16:12:34 -0700 | [diff] [blame] | 6081 | error = -EFSCORRUPTED; |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 6082 | goto del_cursor; |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6083 | } |
| 6084 | |
Christoph Hellwig | bf80628 | 2017-10-19 11:07:34 -0700 | [diff] [blame] | 6085 | new_startoff = got.br_startoff + offset_shift_fsb; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 6086 | if (xfs_iext_peek_next_extent(ifp, &icur, &next)) { |
Christoph Hellwig | bf80628 | 2017-10-19 11:07:34 -0700 | [diff] [blame] | 6087 | if (new_startoff + got.br_blockcount > next.br_startoff) { |
| 6088 | error = -EINVAL; |
| 6089 | goto del_cursor; |
| 6090 | } |
| 6091 | |
| 6092 | /* |
| 6093 | * Unlike a left shift (which involves a hole punch), a right |
| 6094 | * shift does not modify extent neighbors in any way. We should |
| 6095 | * never find mergeable extents in this scenario. Check anyways |
| 6096 | * and warn if we encounter two extents that could be one. |
| 6097 | */ |
| 6098 | if (xfs_bmse_can_merge(&got, &next, offset_shift_fsb)) |
| 6099 | WARN_ON_ONCE(1); |
| 6100 | } |
| 6101 | |
Brian Foster | 0f37d17 | 2018-08-01 07:20:34 -0700 | [diff] [blame] | 6102 | error = xfs_bmap_shift_update_extent(tp, ip, whichfork, &icur, &got, |
| 6103 | cur, &logflags, new_startoff); |
Christoph Hellwig | 6b18af0 | 2017-10-19 11:07:10 -0700 | [diff] [blame] | 6104 | if (error) |
| 6105 | goto del_cursor; |
Christoph Hellwig | 5936dc5 | 2017-10-19 11:08:52 -0700 | [diff] [blame] | 6106 | |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 6107 | if (!xfs_iext_prev_extent(ifp, &icur, &got) || |
Christoph Hellwig | 5936dc5 | 2017-10-19 11:08:52 -0700 | [diff] [blame] | 6108 | stop_fsb >= got.br_startoff + got.br_blockcount) { |
Christoph Hellwig | ecfea3f | 2017-10-19 11:07:11 -0700 | [diff] [blame] | 6109 | *done = true; |
Christoph Hellwig | 6b18af0 | 2017-10-19 11:07:10 -0700 | [diff] [blame] | 6110 | goto del_cursor; |
| 6111 | } |
Christoph Hellwig | 6b18af0 | 2017-10-19 11:07:10 -0700 | [diff] [blame] | 6112 | |
| 6113 | *next_fsb = got.br_startoff; |
Namjae Jeon | e1d8fb8 | 2014-02-24 10:58:19 +1100 | [diff] [blame] | 6114 | del_cursor: |
| 6115 | if (cur) |
Darrick J. Wong | 0b04b6b8 | 2018-07-19 12:26:31 -0700 | [diff] [blame] | 6116 | xfs_btree_del_cursor(cur, error); |
Brian Foster | ca446d8 | 2014-09-02 12:12:53 +1000 | [diff] [blame] | 6117 | if (logflags) |
| 6118 | xfs_trans_log_inode(tp, ip, logflags); |
Namjae Jeon | e1d8fb8 | 2014-02-24 10:58:19 +1100 | [diff] [blame] | 6119 | return error; |
| 6120 | } |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6121 | |
| 6122 | /* |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 6123 | * Splits an extent into two extents at split_fsb block such that it is the |
| 6124 | * first block of the current_ext. @ext is a target extent to be split. |
| 6125 | * @split_fsb is a block where the extents is split. If split_fsb lies in a |
| 6126 | * hole or the first block of extents, just return 0. |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6127 | */ |
Brian Foster | b73df17 | 2020-02-26 09:43:15 -0800 | [diff] [blame] | 6128 | int |
| 6129 | xfs_bmap_split_extent( |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6130 | struct xfs_trans *tp, |
| 6131 | struct xfs_inode *ip, |
Brian Foster | 4b77a08 | 2018-07-11 22:26:27 -0700 | [diff] [blame] | 6132 | xfs_fileoff_t split_fsb) |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6133 | { |
| 6134 | int whichfork = XFS_DATA_FORK; |
Darrick J. Wong | 732436e | 2022-07-09 10:56:05 -0700 | [diff] [blame] | 6135 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6136 | struct xfs_btree_cur *cur = NULL; |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6137 | struct xfs_bmbt_irec got; |
| 6138 | struct xfs_bmbt_irec new; /* split extent */ |
| 6139 | struct xfs_mount *mp = ip->i_mount; |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6140 | xfs_fsblock_t gotblkcnt; /* new block count for got */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 6141 | struct xfs_iext_cursor icur; |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6142 | int error = 0; |
| 6143 | int logflags = 0; |
| 6144 | int i = 0; |
| 6145 | |
Christoph Hellwig | f7e67b2 | 2020-05-18 10:28:05 -0700 | [diff] [blame] | 6146 | if (XFS_IS_CORRUPT(mp, !xfs_ifork_has_extents(ifp)) || |
Darrick J. Wong | a71895c | 2019-11-11 12:53:22 -0800 | [diff] [blame] | 6147 | XFS_TEST_ERROR(false, mp, XFS_ERRTAG_BMAPIFORMAT)) { |
Darrick J. Wong | 1196f3f | 2024-02-22 12:31:51 -0800 | [diff] [blame] | 6148 | xfs_bmap_mark_sick(ip, whichfork); |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6149 | return -EFSCORRUPTED; |
| 6150 | } |
| 6151 | |
Dave Chinner | 75c8c50f | 2021-08-18 18:46:53 -0700 | [diff] [blame] | 6152 | if (xfs_is_shutdown(mp)) |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6153 | return -EIO; |
| 6154 | |
Christoph Hellwig | 862a804 | 2021-04-13 11:15:09 -0700 | [diff] [blame] | 6155 | /* Read in all the extents */ |
| 6156 | error = xfs_iread_extents(tp, ip, whichfork); |
| 6157 | if (error) |
| 6158 | return error; |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6159 | |
| 6160 | /* |
Christoph Hellwig | 4c35445b | 2017-08-29 15:44:13 -0700 | [diff] [blame] | 6161 | * If there are not extents, or split_fsb lies in a hole we are done. |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6162 | */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 6163 | if (!xfs_iext_lookup_extent(ip, ifp, split_fsb, &icur, &got) || |
Christoph Hellwig | 4c35445b | 2017-08-29 15:44:13 -0700 | [diff] [blame] | 6164 | got.br_startoff >= split_fsb) |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6165 | return 0; |
| 6166 | |
| 6167 | gotblkcnt = split_fsb - got.br_startoff; |
| 6168 | new.br_startoff = split_fsb; |
| 6169 | new.br_startblock = got.br_startblock + gotblkcnt; |
| 6170 | new.br_blockcount = got.br_blockcount - gotblkcnt; |
| 6171 | new.br_state = got.br_state; |
| 6172 | |
Christoph Hellwig | ac1e067 | 2021-04-13 11:15:11 -0700 | [diff] [blame] | 6173 | if (ifp->if_format == XFS_DINODE_FMT_BTREE) { |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6174 | cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 6175 | error = xfs_bmbt_lookup_eq(cur, &got, &i); |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6176 | if (error) |
| 6177 | goto del_cursor; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 6178 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 6179 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 6180 | error = -EFSCORRUPTED; |
| 6181 | goto del_cursor; |
| 6182 | } |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6183 | } |
| 6184 | |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6185 | got.br_blockcount = gotblkcnt; |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 6186 | xfs_iext_update_extent(ip, xfs_bmap_fork_to_state(whichfork), &icur, |
| 6187 | &got); |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6188 | |
| 6189 | logflags = XFS_ILOG_CORE; |
| 6190 | if (cur) { |
Christoph Hellwig | a67d00a | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 6191 | error = xfs_bmbt_update(cur, &got); |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6192 | if (error) |
| 6193 | goto del_cursor; |
| 6194 | } else |
| 6195 | logflags |= XFS_ILOG_DEXT; |
| 6196 | |
| 6197 | /* Add new extent */ |
Christoph Hellwig | b2b1712 | 2017-11-03 10:34:43 -0700 | [diff] [blame] | 6198 | xfs_iext_next(ifp, &icur); |
Christoph Hellwig | 0254c2f | 2017-11-03 10:34:46 -0700 | [diff] [blame] | 6199 | xfs_iext_insert(ip, &icur, &new, 0); |
Christoph Hellwig | daf8396 | 2020-05-18 10:27:22 -0700 | [diff] [blame] | 6200 | ifp->if_nextents++; |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6201 | |
| 6202 | if (cur) { |
Christoph Hellwig | e16cf9b | 2017-10-17 14:16:26 -0700 | [diff] [blame] | 6203 | error = xfs_bmbt_lookup_eq(cur, &new, &i); |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6204 | if (error) |
| 6205 | goto del_cursor; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 6206 | if (XFS_IS_CORRUPT(mp, i != 0)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 6207 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 6208 | error = -EFSCORRUPTED; |
| 6209 | goto del_cursor; |
| 6210 | } |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6211 | error = xfs_btree_insert(cur, &i); |
| 6212 | if (error) |
| 6213 | goto del_cursor; |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 6214 | if (XFS_IS_CORRUPT(mp, i != 1)) { |
Darrick J. Wong | 989d5ec | 2024-02-22 12:32:55 -0800 | [diff] [blame] | 6215 | xfs_btree_mark_sick(cur); |
Darrick J. Wong | f9e0370 | 2019-11-11 12:52:18 -0800 | [diff] [blame] | 6216 | error = -EFSCORRUPTED; |
| 6217 | goto del_cursor; |
| 6218 | } |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6219 | } |
| 6220 | |
| 6221 | /* |
| 6222 | * Convert to a btree if necessary. |
| 6223 | */ |
| 6224 | if (xfs_bmap_needs_btree(ip, whichfork)) { |
| 6225 | int tmp_logflags; /* partial log flag return val */ |
| 6226 | |
| 6227 | ASSERT(cur == NULL); |
Brian Foster | 280253d | 2018-07-11 22:26:29 -0700 | [diff] [blame] | 6228 | error = xfs_bmap_extents_to_btree(tp, ip, &cur, 0, |
| 6229 | &tmp_logflags, whichfork); |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6230 | logflags |= tmp_logflags; |
| 6231 | } |
| 6232 | |
| 6233 | del_cursor: |
| 6234 | if (cur) { |
Christoph Hellwig | 88ee2f4 | 2024-02-22 12:37:03 -0800 | [diff] [blame] | 6235 | cur->bc_bmap.allocated = 0; |
Darrick J. Wong | 0b04b6b8 | 2018-07-19 12:26:31 -0700 | [diff] [blame] | 6236 | xfs_btree_del_cursor(cur, error); |
Namjae Jeon | a904b1c | 2015-03-25 15:08:56 +1100 | [diff] [blame] | 6237 | } |
| 6238 | |
| 6239 | if (logflags) |
| 6240 | xfs_trans_log_inode(tp, ip, logflags); |
| 6241 | return error; |
| 6242 | } |
| 6243 | |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6244 | /* Record a bmap intent. */ |
Darrick J. Wong | 52f8070 | 2024-02-22 12:44:32 -0800 | [diff] [blame] | 6245 | static inline void |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6246 | __xfs_bmap_add( |
Brian Foster | 0f37d17 | 2018-08-01 07:20:34 -0700 | [diff] [blame] | 6247 | struct xfs_trans *tp, |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6248 | enum xfs_bmap_intent_type type, |
| 6249 | struct xfs_inode *ip, |
| 6250 | int whichfork, |
| 6251 | struct xfs_bmbt_irec *bmap) |
| 6252 | { |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6253 | struct xfs_bmap_intent *bi; |
| 6254 | |
Darrick J. Wong | 52f8070 | 2024-02-22 12:44:32 -0800 | [diff] [blame] | 6255 | if ((whichfork != XFS_DATA_FORK && whichfork != XFS_ATTR_FORK) || |
| 6256 | bmap->br_startblock == HOLESTARTBLOCK || |
| 6257 | bmap->br_startblock == DELAYSTARTBLOCK) |
| 6258 | return; |
| 6259 | |
Dave Chinner | 0b3a76e | 2024-01-16 09:59:46 +1100 | [diff] [blame] | 6260 | bi = kmem_cache_alloc(xfs_bmap_intent_cache, GFP_KERNEL | __GFP_NOFAIL); |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6261 | INIT_LIST_HEAD(&bi->bi_list); |
| 6262 | bi->bi_type = type; |
| 6263 | bi->bi_owner = ip; |
| 6264 | bi->bi_whichfork = whichfork; |
| 6265 | bi->bi_bmap = *bmap; |
| 6266 | |
Darrick J. Wong | 8028411 | 2024-02-22 12:44:21 -0800 | [diff] [blame] | 6267 | xfs_bmap_defer_add(tp, bi); |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6268 | } |
| 6269 | |
| 6270 | /* Map an extent into a file. */ |
Darrick J. Wong | 3e08f42 | 2019-08-26 17:06:04 -0700 | [diff] [blame] | 6271 | void |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6272 | xfs_bmap_map_extent( |
Brian Foster | 0f37d17 | 2018-08-01 07:20:34 -0700 | [diff] [blame] | 6273 | struct xfs_trans *tp, |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6274 | struct xfs_inode *ip, |
Darrick J. Wong | 52f8070 | 2024-02-22 12:44:32 -0800 | [diff] [blame] | 6275 | int whichfork, |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6276 | struct xfs_bmbt_irec *PREV) |
| 6277 | { |
Darrick J. Wong | 52f8070 | 2024-02-22 12:44:32 -0800 | [diff] [blame] | 6278 | __xfs_bmap_add(tp, XFS_BMAP_MAP, ip, whichfork, PREV); |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6279 | } |
| 6280 | |
| 6281 | /* Unmap an extent out of a file. */ |
Darrick J. Wong | 3e08f42 | 2019-08-26 17:06:04 -0700 | [diff] [blame] | 6282 | void |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6283 | xfs_bmap_unmap_extent( |
Brian Foster | 0f37d17 | 2018-08-01 07:20:34 -0700 | [diff] [blame] | 6284 | struct xfs_trans *tp, |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6285 | struct xfs_inode *ip, |
Darrick J. Wong | 52f8070 | 2024-02-22 12:44:32 -0800 | [diff] [blame] | 6286 | int whichfork, |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6287 | struct xfs_bmbt_irec *PREV) |
| 6288 | { |
Darrick J. Wong | 52f8070 | 2024-02-22 12:44:32 -0800 | [diff] [blame] | 6289 | __xfs_bmap_add(tp, XFS_BMAP_UNMAP, ip, whichfork, PREV); |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6290 | } |
| 6291 | |
| 6292 | /* |
| 6293 | * Process one of the deferred bmap operations. We pass back the |
| 6294 | * btree cursor to maintain our lock on the bmapbt between calls. |
| 6295 | */ |
| 6296 | int |
| 6297 | xfs_bmap_finish_one( |
| 6298 | struct xfs_trans *tp, |
Darrick J. Wong | ddccb81 | 2023-02-01 09:50:53 -0800 | [diff] [blame] | 6299 | struct xfs_bmap_intent *bi) |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6300 | { |
Darrick J. Wong | ddccb81 | 2023-02-01 09:50:53 -0800 | [diff] [blame] | 6301 | struct xfs_bmbt_irec *bmap = &bi->bi_bmap; |
Darrick J. Wong | e1a4e37 | 2017-06-14 21:25:57 -0700 | [diff] [blame] | 6302 | int error = 0; |
Darrick J. Wong | 52f8070 | 2024-02-22 12:44:32 -0800 | [diff] [blame] | 6303 | int flags = 0; |
| 6304 | |
| 6305 | if (bi->bi_whichfork == XFS_ATTR_FORK) |
| 6306 | flags |= XFS_BMAPI_ATTRFORK; |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6307 | |
Dave Chinner | 692b6cd | 2023-02-11 04:11:06 +1100 | [diff] [blame] | 6308 | ASSERT(tp->t_highest_agno == NULLAGNUMBER); |
Darrick J. Wong | 4c1a67b | 2017-07-17 14:30:51 -0700 | [diff] [blame] | 6309 | |
Darrick J. Wong | 2a15e76 | 2024-02-22 12:43:53 -0800 | [diff] [blame] | 6310 | trace_xfs_bmap_deferred(bi); |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6311 | |
Darrick J. Wong | 52f8070 | 2024-02-22 12:44:32 -0800 | [diff] [blame] | 6312 | if (XFS_TEST_ERROR(false, tp->t_mountp, XFS_ERRTAG_BMAP_FINISH_ONE)) |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6313 | return -EIO; |
| 6314 | |
Darrick J. Wong | ddccb81 | 2023-02-01 09:50:53 -0800 | [diff] [blame] | 6315 | switch (bi->bi_type) { |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6316 | case XFS_BMAP_MAP: |
Darrick J. Wong | 6c8127e | 2024-02-22 12:45:00 -0800 | [diff] [blame] | 6317 | if (bi->bi_bmap.br_state == XFS_EXT_UNWRITTEN) |
| 6318 | flags |= XFS_BMAPI_PREALLOC; |
Darrick J. Wong | ddccb81 | 2023-02-01 09:50:53 -0800 | [diff] [blame] | 6319 | error = xfs_bmapi_remap(tp, bi->bi_owner, bmap->br_startoff, |
Darrick J. Wong | 52f8070 | 2024-02-22 12:44:32 -0800 | [diff] [blame] | 6320 | bmap->br_blockcount, bmap->br_startblock, |
| 6321 | flags); |
Darrick J. Wong | ddccb81 | 2023-02-01 09:50:53 -0800 | [diff] [blame] | 6322 | bmap->br_blockcount = 0; |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6323 | break; |
| 6324 | case XFS_BMAP_UNMAP: |
Darrick J. Wong | ddccb81 | 2023-02-01 09:50:53 -0800 | [diff] [blame] | 6325 | error = __xfs_bunmapi(tp, bi->bi_owner, bmap->br_startoff, |
Darrick J. Wong | 52f8070 | 2024-02-22 12:44:32 -0800 | [diff] [blame] | 6326 | &bmap->br_blockcount, flags | XFS_BMAPI_REMAP, |
| 6327 | 1); |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6328 | break; |
| 6329 | default: |
| 6330 | ASSERT(0); |
Darrick J. Wong | 1196f3f | 2024-02-22 12:31:51 -0800 | [diff] [blame] | 6331 | xfs_bmap_mark_sick(bi->bi_owner, bi->bi_whichfork); |
Darrick J. Wong | 9f3afb5 | 2016-10-03 09:11:28 -0700 | [diff] [blame] | 6332 | error = -EFSCORRUPTED; |
| 6333 | } |
| 6334 | |
| 6335 | return error; |
| 6336 | } |
Darrick J. Wong | 30b0984 | 2018-03-23 10:06:52 -0700 | [diff] [blame] | 6337 | |
Darrick J. Wong | e744cef | 2023-12-15 10:03:37 -0800 | [diff] [blame] | 6338 | /* Check that an extent does not have invalid flags or bad ranges. */ |
Darrick J. Wong | 30b0984 | 2018-03-23 10:06:52 -0700 | [diff] [blame] | 6339 | xfs_failaddr_t |
Darrick J. Wong | e744cef | 2023-12-15 10:03:37 -0800 | [diff] [blame] | 6340 | xfs_bmap_validate_extent_raw( |
| 6341 | struct xfs_mount *mp, |
| 6342 | bool rtfile, |
Darrick J. Wong | 30b0984 | 2018-03-23 10:06:52 -0700 | [diff] [blame] | 6343 | int whichfork, |
| 6344 | struct xfs_bmbt_irec *irec) |
| 6345 | { |
Darrick J. Wong | 33005fd | 2020-12-04 13:28:35 -0800 | [diff] [blame] | 6346 | if (!xfs_verify_fileext(mp, irec->br_startoff, irec->br_blockcount)) |
Darrick J. Wong | acf104c | 2020-12-02 12:25:43 -0800 | [diff] [blame] | 6347 | return __this_address; |
| 6348 | |
Darrick J. Wong | e744cef | 2023-12-15 10:03:37 -0800 | [diff] [blame] | 6349 | if (rtfile && whichfork == XFS_DATA_FORK) { |
Darrick J. Wong | 3d2b6d03 | 2023-10-16 09:31:22 -0700 | [diff] [blame] | 6350 | if (!xfs_verify_rtbext(mp, irec->br_startblock, |
| 6351 | irec->br_blockcount)) |
Darrick J. Wong | 30b0984 | 2018-03-23 10:06:52 -0700 | [diff] [blame] | 6352 | return __this_address; |
| 6353 | } else { |
Darrick J. Wong | 67457eb | 2020-12-04 13:20:00 -0800 | [diff] [blame] | 6354 | if (!xfs_verify_fsbext(mp, irec->br_startblock, |
| 6355 | irec->br_blockcount)) |
Darrick J. Wong | 30b0984 | 2018-03-23 10:06:52 -0700 | [diff] [blame] | 6356 | return __this_address; |
| 6357 | } |
Christoph Hellwig | daa79ba | 2018-10-18 17:18:58 +1100 | [diff] [blame] | 6358 | if (irec->br_state != XFS_EXT_NORM && whichfork != XFS_DATA_FORK) |
| 6359 | return __this_address; |
Darrick J. Wong | 30b0984 | 2018-03-23 10:06:52 -0700 | [diff] [blame] | 6360 | return NULL; |
| 6361 | } |
Darrick J. Wong | f3c799c | 2021-10-12 14:11:01 -0700 | [diff] [blame] | 6362 | |
| 6363 | int __init |
| 6364 | xfs_bmap_intent_init_cache(void) |
| 6365 | { |
| 6366 | xfs_bmap_intent_cache = kmem_cache_create("xfs_bmap_intent", |
| 6367 | sizeof(struct xfs_bmap_intent), |
| 6368 | 0, 0, NULL); |
| 6369 | |
| 6370 | return xfs_bmap_intent_cache != NULL ? 0 : -ENOMEM; |
| 6371 | } |
| 6372 | |
| 6373 | void |
| 6374 | xfs_bmap_intent_destroy_cache(void) |
| 6375 | { |
| 6376 | kmem_cache_destroy(xfs_bmap_intent_cache); |
| 6377 | xfs_bmap_intent_cache = NULL; |
| 6378 | } |
Darrick J. Wong | e744cef | 2023-12-15 10:03:37 -0800 | [diff] [blame] | 6379 | |
| 6380 | /* Check that an inode's extent does not have invalid flags or bad ranges. */ |
| 6381 | xfs_failaddr_t |
| 6382 | xfs_bmap_validate_extent( |
| 6383 | struct xfs_inode *ip, |
| 6384 | int whichfork, |
| 6385 | struct xfs_bmbt_irec *irec) |
| 6386 | { |
| 6387 | return xfs_bmap_validate_extent_raw(ip->i_mount, |
| 6388 | XFS_IS_REALTIME_INODE(ip), whichfork, irec); |
| 6389 | } |
Darrick J. Wong | a59eb5f | 2023-12-15 10:03:43 -0800 | [diff] [blame] | 6390 | |
| 6391 | /* |
| 6392 | * Used in xfs_itruncate_extents(). This is the maximum number of extents |
| 6393 | * freed from a file in a single transaction. |
| 6394 | */ |
| 6395 | #define XFS_ITRUNC_MAX_EXTENTS 2 |
| 6396 | |
| 6397 | /* |
| 6398 | * Unmap every extent in part of an inode's fork. We don't do any higher level |
| 6399 | * invalidation work at all. |
| 6400 | */ |
| 6401 | int |
| 6402 | xfs_bunmapi_range( |
| 6403 | struct xfs_trans **tpp, |
| 6404 | struct xfs_inode *ip, |
| 6405 | uint32_t flags, |
| 6406 | xfs_fileoff_t startoff, |
| 6407 | xfs_fileoff_t endoff) |
| 6408 | { |
| 6409 | xfs_filblks_t unmap_len = endoff - startoff + 1; |
| 6410 | int error = 0; |
| 6411 | |
Matthew Wilcox (Oracle) | 3fed24f | 2024-02-19 15:41:12 +0000 | [diff] [blame] | 6412 | xfs_assert_ilocked(ip, XFS_ILOCK_EXCL); |
Darrick J. Wong | a59eb5f | 2023-12-15 10:03:43 -0800 | [diff] [blame] | 6413 | |
| 6414 | while (unmap_len > 0) { |
| 6415 | ASSERT((*tpp)->t_highest_agno == NULLAGNUMBER); |
| 6416 | error = __xfs_bunmapi(*tpp, ip, startoff, &unmap_len, flags, |
| 6417 | XFS_ITRUNC_MAX_EXTENTS); |
| 6418 | if (error) |
| 6419 | goto out; |
| 6420 | |
| 6421 | /* free the just unmapped extents */ |
| 6422 | error = xfs_defer_finish(tpp); |
| 6423 | if (error) |
| 6424 | goto out; |
Ritesh Harjani (IBM) | b0c6bcd | 2024-05-07 15:06:55 +0530 | [diff] [blame] | 6425 | cond_resched(); |
Darrick J. Wong | a59eb5f | 2023-12-15 10:03:43 -0800 | [diff] [blame] | 6426 | } |
| 6427 | out: |
| 6428 | return error; |
| 6429 | } |
Darrick J. Wong | 32080a9 | 2024-02-22 12:43:38 -0800 | [diff] [blame] | 6430 | |
| 6431 | struct xfs_bmap_query_range { |
| 6432 | xfs_bmap_query_range_fn fn; |
| 6433 | void *priv; |
| 6434 | }; |
| 6435 | |
| 6436 | /* Format btree record and pass to our callback. */ |
| 6437 | STATIC int |
| 6438 | xfs_bmap_query_range_helper( |
| 6439 | struct xfs_btree_cur *cur, |
| 6440 | const union xfs_btree_rec *rec, |
| 6441 | void *priv) |
| 6442 | { |
| 6443 | struct xfs_bmap_query_range *query = priv; |
| 6444 | struct xfs_bmbt_irec irec; |
| 6445 | xfs_failaddr_t fa; |
| 6446 | |
| 6447 | xfs_bmbt_disk_get_all(&rec->bmbt, &irec); |
| 6448 | fa = xfs_bmap_validate_extent(cur->bc_ino.ip, cur->bc_ino.whichfork, |
| 6449 | &irec); |
| 6450 | if (fa) { |
| 6451 | xfs_btree_mark_sick(cur); |
| 6452 | return xfs_bmap_complain_bad_rec(cur->bc_ino.ip, |
| 6453 | cur->bc_ino.whichfork, fa, &irec); |
| 6454 | } |
| 6455 | |
| 6456 | return query->fn(cur, &irec, query->priv); |
| 6457 | } |
| 6458 | |
| 6459 | /* Find all bmaps. */ |
| 6460 | int |
| 6461 | xfs_bmap_query_all( |
| 6462 | struct xfs_btree_cur *cur, |
| 6463 | xfs_bmap_query_range_fn fn, |
| 6464 | void *priv) |
| 6465 | { |
| 6466 | struct xfs_bmap_query_range query = { |
| 6467 | .priv = priv, |
| 6468 | .fn = fn, |
| 6469 | }; |
| 6470 | |
| 6471 | return xfs_btree_query_all(cur, xfs_bmap_query_range_helper, &query); |
| 6472 | } |
Darrick J. Wong | acdddbe | 2024-07-02 11:22:31 -0700 | [diff] [blame] | 6473 | |
| 6474 | /* Helper function to extract extent size hint from inode */ |
| 6475 | xfs_extlen_t |
| 6476 | xfs_get_extsz_hint( |
| 6477 | struct xfs_inode *ip) |
| 6478 | { |
| 6479 | /* |
| 6480 | * No point in aligning allocations if we need to COW to actually |
| 6481 | * write to them. |
| 6482 | */ |
| 6483 | if (xfs_is_always_cow_inode(ip)) |
| 6484 | return 0; |
| 6485 | if ((ip->i_diflags & XFS_DIFLAG_EXTSIZE) && ip->i_extsize) |
| 6486 | return ip->i_extsize; |
| 6487 | if (XFS_IS_REALTIME_INODE(ip) && |
| 6488 | ip->i_mount->m_sb.sb_rextsize > 1) |
| 6489 | return ip->i_mount->m_sb.sb_rextsize; |
| 6490 | return 0; |
| 6491 | } |
| 6492 | |
| 6493 | /* |
| 6494 | * Helper function to extract CoW extent size hint from inode. |
| 6495 | * Between the extent size hint and the CoW extent size hint, we |
| 6496 | * return the greater of the two. If the value is zero (automatic), |
| 6497 | * use the default size. |
| 6498 | */ |
| 6499 | xfs_extlen_t |
| 6500 | xfs_get_cowextsz_hint( |
| 6501 | struct xfs_inode *ip) |
| 6502 | { |
| 6503 | xfs_extlen_t a, b; |
| 6504 | |
| 6505 | a = 0; |
| 6506 | if (ip->i_diflags2 & XFS_DIFLAG2_COWEXTSIZE) |
| 6507 | a = ip->i_cowextsize; |
| 6508 | b = xfs_get_extsz_hint(ip); |
| 6509 | |
| 6510 | a = max(a, b); |
| 6511 | if (a == 0) |
| 6512 | return XFS_DEFAULT_COWEXTSZ_HINT; |
| 6513 | return a; |
| 6514 | } |