Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Nathan Scott | 4ce3121 | 2005-11-02 14:59:41 +1100 | [diff] [blame] | 2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
| 3 | * All Rights Reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
Nathan Scott | 4ce3121 | 2005-11-02 14:59:41 +1100 | [diff] [blame] | 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License as |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * published by the Free Software Foundation. |
| 8 | * |
Nathan Scott | 4ce3121 | 2005-11-02 14:59:41 +1100 | [diff] [blame] | 9 | * This program is distributed in the hope that it would be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
Nathan Scott | 4ce3121 | 2005-11-02 14:59:41 +1100 | [diff] [blame] | 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write the Free Software Foundation, |
| 16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include "xfs.h" |
| 19 | #include "xfs_fs.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 20 | #include "xfs_bit.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include "xfs_log.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 22 | #include "xfs_inum.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include "xfs_trans.h" |
| 24 | #include "xfs_sb.h" |
| 25 | #include "xfs_ag.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include "xfs_alloc.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include "xfs_quota.h" |
| 28 | #include "xfs_mount.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include "xfs_bmap_btree.h" |
| 30 | #include "xfs_ialloc_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include "xfs_dinode.h" |
| 32 | #include "xfs_inode.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 33 | #include "xfs_ialloc.h" |
| 34 | #include "xfs_itable.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include "xfs_rtalloc.h" |
| 36 | #include "xfs_error.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 37 | #include "xfs_bmap.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include "xfs_attr.h" |
| 39 | #include "xfs_buf_item.h" |
| 40 | #include "xfs_trans_space.h" |
| 41 | #include "xfs_utils.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include "xfs_qm.h" |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 43 | #include "xfs_trace.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
| 45 | /* |
| 46 | * The global quota manager. There is only one of these for the entire |
| 47 | * system, _not_ one per file system. XQM keeps track of the overall |
| 48 | * quota functionality, including maintaining the freelist and hash |
| 49 | * tables of dquots. |
| 50 | */ |
Christoph Hellwig | a0b0b8a | 2009-03-29 09:51:00 +0200 | [diff] [blame] | 51 | struct mutex xfs_Gqm_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | struct xfs_qm *xfs_Gqm; |
Nathan Scott | 6b3f6b5 | 2005-11-02 15:08:25 +1100 | [diff] [blame] | 53 | uint ndquot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | |
| 55 | kmem_zone_t *qm_dqzone; |
| 56 | kmem_zone_t *qm_dqtrxzone; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
| 58 | STATIC void xfs_qm_list_init(xfs_dqlist_t *, char *, int); |
| 59 | STATIC void xfs_qm_list_destroy(xfs_dqlist_t *); |
| 60 | |
| 61 | STATIC int xfs_qm_init_quotainos(xfs_mount_t *); |
Christoph Hellwig | ba0f32d | 2005-06-21 15:36:52 +1000 | [diff] [blame] | 62 | STATIC int xfs_qm_init_quotainfo(xfs_mount_t *); |
Ying Han | 1495f23 | 2011-05-24 17:12:27 -0700 | [diff] [blame] | 63 | STATIC int xfs_qm_shake(struct shrinker *, struct shrink_control *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
Rusty Russell | 8e1f936 | 2007-07-17 04:03:17 -0700 | [diff] [blame] | 65 | static struct shrinker xfs_qm_shaker = { |
| 66 | .shrink = xfs_qm_shake, |
| 67 | .seeks = DEFAULT_SEEKS, |
| 68 | }; |
| 69 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | /* |
| 71 | * Initialize the XQM structure. |
| 72 | * Note that there is not one quota manager per file system. |
| 73 | */ |
| 74 | STATIC struct xfs_qm * |
| 75 | xfs_Gqm_init(void) |
| 76 | { |
Nathan Scott | 6b3f6b5 | 2005-11-02 15:08:25 +1100 | [diff] [blame] | 77 | xfs_dqhash_t *udqhash, *gdqhash; |
| 78 | xfs_qm_t *xqm; |
Nathan Scott | 215101c | 2006-09-28 11:04:43 +1000 | [diff] [blame] | 79 | size_t hsize; |
| 80 | uint i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | |
| 82 | /* |
| 83 | * Initialize the dquot hash tables. |
| 84 | */ |
Nathan Scott | 77e4635 | 2006-09-28 11:03:27 +1000 | [diff] [blame] | 85 | udqhash = kmem_zalloc_greedy(&hsize, |
Eric Sandeen | 5995cb7 | 2007-08-16 16:49:11 +1000 | [diff] [blame] | 86 | XFS_QM_HASHSIZE_LOW * sizeof(xfs_dqhash_t), |
Christoph Hellwig | bdfb043 | 2010-01-20 21:55:30 +0000 | [diff] [blame] | 87 | XFS_QM_HASHSIZE_HIGH * sizeof(xfs_dqhash_t)); |
| 88 | if (!udqhash) |
| 89 | goto out; |
| 90 | |
| 91 | gdqhash = kmem_zalloc_large(hsize); |
Julia Lawall | d67b1b0 | 2010-02-06 08:45:15 +0000 | [diff] [blame] | 92 | if (!gdqhash) |
Christoph Hellwig | bdfb043 | 2010-01-20 21:55:30 +0000 | [diff] [blame] | 93 | goto out_free_udqhash; |
| 94 | |
Nathan Scott | 77e4635 | 2006-09-28 11:03:27 +1000 | [diff] [blame] | 95 | hsize /= sizeof(xfs_dqhash_t); |
Nathan Scott | 6b3f6b5 | 2005-11-02 15:08:25 +1100 | [diff] [blame] | 96 | ndquot = hsize << 8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | |
Nathan Scott | 6b3f6b5 | 2005-11-02 15:08:25 +1100 | [diff] [blame] | 98 | xqm = kmem_zalloc(sizeof(xfs_qm_t), KM_SLEEP); |
| 99 | xqm->qm_dqhashmask = hsize - 1; |
| 100 | xqm->qm_usr_dqhtable = udqhash; |
| 101 | xqm->qm_grp_dqhtable = gdqhash; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | ASSERT(xqm->qm_usr_dqhtable != NULL); |
| 103 | ASSERT(xqm->qm_grp_dqhtable != NULL); |
| 104 | |
| 105 | for (i = 0; i < hsize; i++) { |
| 106 | xfs_qm_list_init(&(xqm->qm_usr_dqhtable[i]), "uxdqh", i); |
| 107 | xfs_qm_list_init(&(xqm->qm_grp_dqhtable[i]), "gxdqh", i); |
| 108 | } |
| 109 | |
| 110 | /* |
| 111 | * Freelist of all dquots of all file systems |
| 112 | */ |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 113 | INIT_LIST_HEAD(&xqm->qm_dqfrlist); |
| 114 | xqm->qm_dqfrlist_cnt = 0; |
| 115 | mutex_init(&xqm->qm_dqfrlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | |
| 117 | /* |
| 118 | * dquot zone. we register our own low-memory callback. |
| 119 | */ |
| 120 | if (!qm_dqzone) { |
| 121 | xqm->qm_dqzone = kmem_zone_init(sizeof(xfs_dquot_t), |
| 122 | "xfs_dquots"); |
| 123 | qm_dqzone = xqm->qm_dqzone; |
| 124 | } else |
| 125 | xqm->qm_dqzone = qm_dqzone; |
| 126 | |
Rusty Russell | 8e1f936 | 2007-07-17 04:03:17 -0700 | [diff] [blame] | 127 | register_shrinker(&xfs_qm_shaker); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | |
| 129 | /* |
| 130 | * The t_dqinfo portion of transactions. |
| 131 | */ |
| 132 | if (!qm_dqtrxzone) { |
| 133 | xqm->qm_dqtrxzone = kmem_zone_init(sizeof(xfs_dquot_acct_t), |
| 134 | "xfs_dqtrx"); |
| 135 | qm_dqtrxzone = xqm->qm_dqtrxzone; |
| 136 | } else |
| 137 | xqm->qm_dqtrxzone = qm_dqtrxzone; |
| 138 | |
| 139 | atomic_set(&xqm->qm_totaldquots, 0); |
| 140 | xqm->qm_dqfree_ratio = XFS_QM_DQFREE_RATIO; |
| 141 | xqm->qm_nrefs = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | return xqm; |
Christoph Hellwig | bdfb043 | 2010-01-20 21:55:30 +0000 | [diff] [blame] | 143 | |
| 144 | out_free_udqhash: |
| 145 | kmem_free_large(udqhash); |
| 146 | out: |
| 147 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | } |
| 149 | |
| 150 | /* |
| 151 | * Destroy the global quota manager when its reference count goes to zero. |
| 152 | */ |
Christoph Hellwig | ba0f32d | 2005-06-21 15:36:52 +1000 | [diff] [blame] | 153 | STATIC void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | xfs_qm_destroy( |
| 155 | struct xfs_qm *xqm) |
| 156 | { |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 157 | struct xfs_dquot *dqp, *n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | int hsize, i; |
| 159 | |
| 160 | ASSERT(xqm != NULL); |
| 161 | ASSERT(xqm->qm_nrefs == 0); |
Rusty Russell | 8e1f936 | 2007-07-17 04:03:17 -0700 | [diff] [blame] | 162 | unregister_shrinker(&xfs_qm_shaker); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | hsize = xqm->qm_dqhashmask + 1; |
| 164 | for (i = 0; i < hsize; i++) { |
| 165 | xfs_qm_list_destroy(&(xqm->qm_usr_dqhtable[i])); |
| 166 | xfs_qm_list_destroy(&(xqm->qm_grp_dqhtable[i])); |
| 167 | } |
Christoph Hellwig | bdfb043 | 2010-01-20 21:55:30 +0000 | [diff] [blame] | 168 | kmem_free_large(xqm->qm_usr_dqhtable); |
| 169 | kmem_free_large(xqm->qm_grp_dqhtable); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | xqm->qm_usr_dqhtable = NULL; |
| 171 | xqm->qm_grp_dqhtable = NULL; |
| 172 | xqm->qm_dqhashmask = 0; |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 173 | |
| 174 | /* frlist cleanup */ |
| 175 | mutex_lock(&xqm->qm_dqfrlist_lock); |
| 176 | list_for_each_entry_safe(dqp, n, &xqm->qm_dqfrlist, q_freelist) { |
| 177 | xfs_dqlock(dqp); |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 178 | list_del_init(&dqp->q_freelist); |
| 179 | xfs_Gqm->qm_dqfrlist_cnt--; |
| 180 | xfs_dqunlock(dqp); |
| 181 | xfs_qm_dqdestroy(dqp); |
| 182 | } |
| 183 | mutex_unlock(&xqm->qm_dqfrlist_lock); |
| 184 | mutex_destroy(&xqm->qm_dqfrlist_lock); |
Denys Vlasenko | f0e2d93 | 2008-05-19 16:31:57 +1000 | [diff] [blame] | 185 | kmem_free(xqm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | } |
| 187 | |
| 188 | /* |
| 189 | * Called at mount time to let XQM know that another file system is |
| 190 | * starting quotas. This isn't crucial information as the individual mount |
| 191 | * structures are pretty independent, but it helps the XQM keep a |
| 192 | * global view of what's going on. |
| 193 | */ |
| 194 | /* ARGSUSED */ |
| 195 | STATIC int |
| 196 | xfs_qm_hold_quotafs_ref( |
| 197 | struct xfs_mount *mp) |
| 198 | { |
| 199 | /* |
| 200 | * Need to lock the xfs_Gqm structure for things like this. For example, |
| 201 | * the structure could disappear between the entry to this routine and |
| 202 | * a HOLD operation if not locked. |
| 203 | */ |
Christoph Hellwig | e249458 | 2009-02-09 08:38:39 +0100 | [diff] [blame] | 204 | mutex_lock(&xfs_Gqm_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | |
Christoph Hellwig | bdfb043 | 2010-01-20 21:55:30 +0000 | [diff] [blame] | 206 | if (!xfs_Gqm) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | xfs_Gqm = xfs_Gqm_init(); |
Julia Lawall | 38e712a | 2010-05-26 15:57:23 +0000 | [diff] [blame] | 208 | if (!xfs_Gqm) { |
| 209 | mutex_unlock(&xfs_Gqm_lock); |
Christoph Hellwig | bdfb043 | 2010-01-20 21:55:30 +0000 | [diff] [blame] | 210 | return ENOMEM; |
Julia Lawall | 38e712a | 2010-05-26 15:57:23 +0000 | [diff] [blame] | 211 | } |
Christoph Hellwig | bdfb043 | 2010-01-20 21:55:30 +0000 | [diff] [blame] | 212 | } |
| 213 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | /* |
| 215 | * We can keep a list of all filesystems with quotas mounted for |
| 216 | * debugging and statistical purposes, but ... |
| 217 | * Just take a reference and get out. |
| 218 | */ |
Christoph Hellwig | e249458 | 2009-02-09 08:38:39 +0100 | [diff] [blame] | 219 | xfs_Gqm->qm_nrefs++; |
| 220 | mutex_unlock(&xfs_Gqm_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | |
| 222 | return 0; |
| 223 | } |
| 224 | |
| 225 | |
| 226 | /* |
| 227 | * Release the reference that a filesystem took at mount time, |
| 228 | * so that we know when we need to destroy the entire quota manager. |
| 229 | */ |
| 230 | /* ARGSUSED */ |
| 231 | STATIC void |
| 232 | xfs_qm_rele_quotafs_ref( |
| 233 | struct xfs_mount *mp) |
| 234 | { |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 235 | xfs_dquot_t *dqp, *n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | |
| 237 | ASSERT(xfs_Gqm); |
| 238 | ASSERT(xfs_Gqm->qm_nrefs > 0); |
| 239 | |
| 240 | /* |
| 241 | * Go thru the freelist and destroy all inactive dquots. |
| 242 | */ |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 243 | mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 245 | list_for_each_entry_safe(dqp, n, &xfs_Gqm->qm_dqfrlist, q_freelist) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | xfs_dqlock(dqp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | if (dqp->dq_flags & XFS_DQ_INACTIVE) { |
| 248 | ASSERT(dqp->q_mount == NULL); |
| 249 | ASSERT(! XFS_DQ_IS_DIRTY(dqp)); |
Dave Chinner | e6a81f1 | 2010-04-13 15:06:51 +1000 | [diff] [blame] | 250 | ASSERT(list_empty(&dqp->q_hashlist)); |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 251 | ASSERT(list_empty(&dqp->q_mplist)); |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 252 | list_del_init(&dqp->q_freelist); |
| 253 | xfs_Gqm->qm_dqfrlist_cnt--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | xfs_dqunlock(dqp); |
| 255 | xfs_qm_dqdestroy(dqp); |
| 256 | } else { |
| 257 | xfs_dqunlock(dqp); |
| 258 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | } |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 260 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | |
| 262 | /* |
| 263 | * Destroy the entire XQM. If somebody mounts with quotaon, this'll |
| 264 | * be restarted. |
| 265 | */ |
Christoph Hellwig | e249458 | 2009-02-09 08:38:39 +0100 | [diff] [blame] | 266 | mutex_lock(&xfs_Gqm_lock); |
| 267 | if (--xfs_Gqm->qm_nrefs == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | xfs_qm_destroy(xfs_Gqm); |
| 269 | xfs_Gqm = NULL; |
| 270 | } |
Christoph Hellwig | e249458 | 2009-02-09 08:38:39 +0100 | [diff] [blame] | 271 | mutex_unlock(&xfs_Gqm_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | } |
| 273 | |
| 274 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | * Just destroy the quotainfo structure. |
| 276 | */ |
| 277 | void |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 278 | xfs_qm_unmount( |
| 279 | struct xfs_mount *mp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | { |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 281 | if (mp->m_quotainfo) { |
Christoph Hellwig | 8112e9d | 2010-04-20 17:02:29 +1000 | [diff] [blame] | 282 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | xfs_qm_destroy_quotainfo(mp); |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 284 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | } |
| 286 | |
| 287 | |
| 288 | /* |
| 289 | * This is called from xfs_mountfs to start quotas and initialize all |
| 290 | * necessary data structures like quotainfo. This is also responsible for |
| 291 | * running a quotacheck as necessary. We are guaranteed that the superblock |
| 292 | * is consistently read in at this point. |
David Chinner | 53aa791 | 2008-04-10 12:20:31 +1000 | [diff] [blame] | 293 | * |
| 294 | * If we fail here, the mount will continue with quota turned off. We don't |
| 295 | * need to inidicate success or failure at all. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | */ |
David Chinner | 53aa791 | 2008-04-10 12:20:31 +1000 | [diff] [blame] | 297 | void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | xfs_qm_mount_quotas( |
Christoph Hellwig | 4249023 | 2008-08-13 16:49:32 +1000 | [diff] [blame] | 299 | xfs_mount_t *mp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | int error = 0; |
| 302 | uint sbf; |
| 303 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | /* |
| 305 | * If quotas on realtime volumes is not supported, we disable |
| 306 | * quotas immediately. |
| 307 | */ |
| 308 | if (mp->m_sb.sb_rextents) { |
Dave Chinner | 0b932cc | 2011-03-07 10:08:35 +1100 | [diff] [blame] | 309 | xfs_notice(mp, "Cannot turn on quotas for realtime filesystem"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | mp->m_qflags = 0; |
| 311 | goto write_changes; |
| 312 | } |
| 313 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
Nathan Scott | 155ffd0 | 2005-09-02 16:43:48 +1000 | [diff] [blame] | 315 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | /* |
| 317 | * Allocate the quotainfo structure inside the mount struct, and |
| 318 | * create quotainode(s), and change/rev superblock if necessary. |
| 319 | */ |
David Chinner | 53aa791 | 2008-04-10 12:20:31 +1000 | [diff] [blame] | 320 | error = xfs_qm_init_quotainfo(mp); |
| 321 | if (error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | /* |
| 323 | * We must turn off quotas. |
| 324 | */ |
| 325 | ASSERT(mp->m_quotainfo == NULL); |
| 326 | mp->m_qflags = 0; |
| 327 | goto write_changes; |
| 328 | } |
| 329 | /* |
| 330 | * If any of the quotas are not consistent, do a quotacheck. |
| 331 | */ |
Christoph Hellwig | 4249023 | 2008-08-13 16:49:32 +1000 | [diff] [blame] | 332 | if (XFS_QM_NEED_QUOTACHECK(mp)) { |
David Chinner | 53aa791 | 2008-04-10 12:20:31 +1000 | [diff] [blame] | 333 | error = xfs_qm_quotacheck(mp); |
| 334 | if (error) { |
| 335 | /* Quotacheck failed and disabled quotas. */ |
| 336 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | } |
Donald Douwsma | 646d5bd | 2007-05-08 13:49:09 +1000 | [diff] [blame] | 339 | /* |
| 340 | * If one type of quotas is off, then it will lose its |
| 341 | * quotachecked status, since we won't be doing accounting for |
| 342 | * that type anymore. |
| 343 | */ |
David Chinner | 53aa791 | 2008-04-10 12:20:31 +1000 | [diff] [blame] | 344 | if (!XFS_IS_UQUOTA_ON(mp)) |
Donald Douwsma | 646d5bd | 2007-05-08 13:49:09 +1000 | [diff] [blame] | 345 | mp->m_qflags &= ~XFS_UQUOTA_CHKD; |
David Chinner | 53aa791 | 2008-04-10 12:20:31 +1000 | [diff] [blame] | 346 | if (!(XFS_IS_GQUOTA_ON(mp) || XFS_IS_PQUOTA_ON(mp))) |
Donald Douwsma | 646d5bd | 2007-05-08 13:49:09 +1000 | [diff] [blame] | 347 | mp->m_qflags &= ~XFS_OQUOTA_CHKD; |
Nathan Scott | 155ffd0 | 2005-09-02 16:43:48 +1000 | [diff] [blame] | 348 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | write_changes: |
| 350 | /* |
Eric Sandeen | 3685c2a | 2007-10-11 17:42:32 +1000 | [diff] [blame] | 351 | * We actually don't have to acquire the m_sb_lock at all. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | * This can only be called from mount, and that's single threaded. XXX |
| 353 | */ |
Eric Sandeen | 3685c2a | 2007-10-11 17:42:32 +1000 | [diff] [blame] | 354 | spin_lock(&mp->m_sb_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | sbf = mp->m_sb.sb_qflags; |
| 356 | mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL; |
Eric Sandeen | 3685c2a | 2007-10-11 17:42:32 +1000 | [diff] [blame] | 357 | spin_unlock(&mp->m_sb_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | |
| 359 | if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { |
| 360 | if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) { |
| 361 | /* |
| 362 | * We could only have been turning quotas off. |
| 363 | * We aren't in very good shape actually because |
| 364 | * the incore structures are convinced that quotas are |
| 365 | * off, but the on disk superblock doesn't know that ! |
| 366 | */ |
| 367 | ASSERT(!(XFS_IS_QUOTA_RUNNING(mp))); |
Dave Chinner | 5348778 | 2011-03-07 10:05:35 +1100 | [diff] [blame] | 368 | xfs_alert(mp, "%s: Superblock update failed!", |
| 369 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | } |
| 371 | } |
| 372 | |
| 373 | if (error) { |
Dave Chinner | 5348778 | 2011-03-07 10:05:35 +1100 | [diff] [blame] | 374 | xfs_warn(mp, "Failed to initialize disk quotas."); |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 375 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | } |
| 378 | |
| 379 | /* |
| 380 | * Called from the vfsops layer. |
| 381 | */ |
Christoph Hellwig | e57481d | 2008-12-03 12:20:36 +0100 | [diff] [blame] | 382 | void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | xfs_qm_unmount_quotas( |
| 384 | xfs_mount_t *mp) |
| 385 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | /* |
| 387 | * Release the dquots that root inode, et al might be holding, |
| 388 | * before we flush quotas and blow away the quotainfo structure. |
| 389 | */ |
| 390 | ASSERT(mp->m_rootip); |
| 391 | xfs_qm_dqdetach(mp->m_rootip); |
| 392 | if (mp->m_rbmip) |
| 393 | xfs_qm_dqdetach(mp->m_rbmip); |
| 394 | if (mp->m_rsumip) |
| 395 | xfs_qm_dqdetach(mp->m_rsumip); |
| 396 | |
| 397 | /* |
Christoph Hellwig | e57481d | 2008-12-03 12:20:36 +0100 | [diff] [blame] | 398 | * Release the quota inodes. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | if (mp->m_quotainfo) { |
Christoph Hellwig | e57481d | 2008-12-03 12:20:36 +0100 | [diff] [blame] | 401 | if (mp->m_quotainfo->qi_uquotaip) { |
| 402 | IRELE(mp->m_quotainfo->qi_uquotaip); |
| 403 | mp->m_quotainfo->qi_uquotaip = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | } |
Christoph Hellwig | e57481d | 2008-12-03 12:20:36 +0100 | [diff] [blame] | 405 | if (mp->m_quotainfo->qi_gquotaip) { |
| 406 | IRELE(mp->m_quotainfo->qi_gquotaip); |
| 407 | mp->m_quotainfo->qi_gquotaip = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | } |
| 409 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | } |
| 411 | |
| 412 | /* |
| 413 | * Flush all dquots of the given file system to disk. The dquots are |
| 414 | * _not_ purged from memory here, just their data written to disk. |
| 415 | */ |
Christoph Hellwig | ba0f32d | 2005-06-21 15:36:52 +1000 | [diff] [blame] | 416 | STATIC int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | xfs_qm_dqflush_all( |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 418 | struct xfs_mount *mp, |
| 419 | int sync_mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | { |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 421 | struct xfs_quotainfo *q = mp->m_quotainfo; |
| 422 | int recl; |
| 423 | struct xfs_dquot *dqp; |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 424 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 426 | if (!q) |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 427 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | again: |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 429 | mutex_lock(&q->qi_dqlist_lock); |
| 430 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | xfs_dqlock(dqp); |
| 432 | if (! XFS_DQ_IS_DIRTY(dqp)) { |
| 433 | xfs_dqunlock(dqp); |
| 434 | continue; |
| 435 | } |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 436 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | /* XXX a sentinel would be better */ |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 438 | recl = q->qi_dqreclaims; |
David Chinner | e1f49cf | 2008-08-13 16:41:43 +1000 | [diff] [blame] | 439 | if (!xfs_dqflock_nowait(dqp)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | /* |
| 441 | * If we can't grab the flush lock then check |
| 442 | * to see if the dquot has been flushed delayed |
| 443 | * write. If so, grab its buffer and send it |
| 444 | * out immediately. We'll be able to acquire |
| 445 | * the flush lock when the I/O completes. |
| 446 | */ |
| 447 | xfs_qm_dqflock_pushbuf_wait(dqp); |
| 448 | } |
| 449 | /* |
| 450 | * Let go of the mplist lock. We don't want to hold it |
| 451 | * across a disk write. |
| 452 | */ |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 453 | mutex_unlock(&q->qi_dqlist_lock); |
Dave Chinner | 20026d9 | 2010-02-04 09:48:58 +1100 | [diff] [blame] | 454 | error = xfs_qm_dqflush(dqp, sync_mode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | xfs_dqunlock(dqp); |
| 456 | if (error) |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 457 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 459 | mutex_lock(&q->qi_dqlist_lock); |
| 460 | if (recl != q->qi_dqreclaims) { |
| 461 | mutex_unlock(&q->qi_dqlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | /* XXX restart limit */ |
| 463 | goto again; |
| 464 | } |
| 465 | } |
| 466 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 467 | mutex_unlock(&q->qi_dqlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | /* return ! busy */ |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 469 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | } |
| 471 | /* |
| 472 | * Release the group dquot pointers the user dquots may be |
| 473 | * carrying around as a hint. mplist is locked on entry and exit. |
| 474 | */ |
| 475 | STATIC void |
| 476 | xfs_qm_detach_gdquots( |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 477 | struct xfs_mount *mp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | { |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 479 | struct xfs_quotainfo *q = mp->m_quotainfo; |
| 480 | struct xfs_dquot *dqp, *gdqp; |
| 481 | int nrecl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | |
| 483 | again: |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 484 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
| 485 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | xfs_dqlock(dqp); |
| 487 | if ((gdqp = dqp->q_gdquot)) { |
| 488 | xfs_dqlock(gdqp); |
| 489 | dqp->q_gdquot = NULL; |
| 490 | } |
| 491 | xfs_dqunlock(dqp); |
| 492 | |
| 493 | if (gdqp) { |
| 494 | /* |
| 495 | * Can't hold the mplist lock across a dqput. |
| 496 | * XXXmust convert to marker based iterations here. |
| 497 | */ |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 498 | nrecl = q->qi_dqreclaims; |
| 499 | mutex_unlock(&q->qi_dqlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | xfs_qm_dqput(gdqp); |
| 501 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 502 | mutex_lock(&q->qi_dqlist_lock); |
| 503 | if (nrecl != q->qi_dqreclaims) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | goto again; |
| 505 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | } |
| 507 | } |
| 508 | |
| 509 | /* |
| 510 | * Go through all the incore dquots of this file system and take them |
| 511 | * off the mplist and hashlist, if the dquot type matches the dqtype |
| 512 | * parameter. This is used when turning off quota accounting for |
| 513 | * users and/or groups, as well as when the filesystem is unmounting. |
| 514 | */ |
| 515 | STATIC int |
| 516 | xfs_qm_dqpurge_int( |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 517 | struct xfs_mount *mp, |
| 518 | uint flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | { |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 520 | struct xfs_quotainfo *q = mp->m_quotainfo; |
| 521 | struct xfs_dquot *dqp, *n; |
| 522 | uint dqtype; |
| 523 | int nrecl; |
| 524 | int nmisses; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 526 | if (!q) |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 527 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | |
| 529 | dqtype = (flags & XFS_QMOPT_UQUOTA) ? XFS_DQ_USER : 0; |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 530 | dqtype |= (flags & XFS_QMOPT_PQUOTA) ? XFS_DQ_PROJ : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | dqtype |= (flags & XFS_QMOPT_GQUOTA) ? XFS_DQ_GROUP : 0; |
| 532 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 533 | mutex_lock(&q->qi_dqlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | |
| 535 | /* |
| 536 | * In the first pass through all incore dquots of this filesystem, |
| 537 | * we release the group dquot pointers the user dquots may be |
| 538 | * carrying around as a hint. We need to do this irrespective of |
| 539 | * what's being turned off. |
| 540 | */ |
| 541 | xfs_qm_detach_gdquots(mp); |
| 542 | |
| 543 | again: |
| 544 | nmisses = 0; |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 545 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | /* |
| 547 | * Try to get rid of all of the unwanted dquots. The idea is to |
| 548 | * get them off mplist and hashlist, but leave them on freelist. |
| 549 | */ |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 550 | list_for_each_entry_safe(dqp, n, &q->qi_dqlist, q_mplist) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | /* |
| 552 | * It's OK to look at the type without taking dqlock here. |
| 553 | * We're holding the mplist lock here, and that's needed for |
| 554 | * a dqreclaim. |
| 555 | */ |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 556 | if ((dqp->dq_flags & dqtype) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | |
Christoph Hellwig | c9a192d | 2009-02-09 08:47:22 +0100 | [diff] [blame] | 559 | if (!mutex_trylock(&dqp->q_hash->qh_lock)) { |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 560 | nrecl = q->qi_dqreclaims; |
| 561 | mutex_unlock(&q->qi_dqlist_lock); |
Christoph Hellwig | c9a192d | 2009-02-09 08:47:22 +0100 | [diff] [blame] | 562 | mutex_lock(&dqp->q_hash->qh_lock); |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 563 | mutex_lock(&q->qi_dqlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | |
| 565 | /* |
| 566 | * XXXTheoretically, we can get into a very long |
| 567 | * ping pong game here. |
| 568 | * No one can be adding dquots to the mplist at |
| 569 | * this point, but somebody might be taking things off. |
| 570 | */ |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 571 | if (nrecl != q->qi_dqreclaims) { |
Christoph Hellwig | c9a192d | 2009-02-09 08:47:22 +0100 | [diff] [blame] | 572 | mutex_unlock(&dqp->q_hash->qh_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | goto again; |
| 574 | } |
| 575 | } |
| 576 | |
| 577 | /* |
| 578 | * Take the dquot off the mplist and hashlist. It may remain on |
| 579 | * freelist in INACTIVE state. |
| 580 | */ |
Denys Vlasenko | 4f0e8a9 | 2008-05-19 16:34:04 +1000 | [diff] [blame] | 581 | nmisses += xfs_qm_dqpurge(dqp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | } |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 583 | mutex_unlock(&q->qi_dqlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | return nmisses; |
| 585 | } |
| 586 | |
| 587 | int |
| 588 | xfs_qm_dqpurge_all( |
| 589 | xfs_mount_t *mp, |
| 590 | uint flags) |
| 591 | { |
| 592 | int ndquots; |
| 593 | |
| 594 | /* |
| 595 | * Purge the dquot cache. |
| 596 | * None of the dquots should really be busy at this point. |
| 597 | */ |
| 598 | if (mp->m_quotainfo) { |
| 599 | while ((ndquots = xfs_qm_dqpurge_int(mp, flags))) { |
| 600 | delay(ndquots * 10); |
| 601 | } |
| 602 | } |
| 603 | return 0; |
| 604 | } |
| 605 | |
| 606 | STATIC int |
| 607 | xfs_qm_dqattach_one( |
| 608 | xfs_inode_t *ip, |
| 609 | xfs_dqid_t id, |
| 610 | uint type, |
| 611 | uint doalloc, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | xfs_dquot_t *udqhint, /* hint */ |
| 613 | xfs_dquot_t **IO_idqpp) |
| 614 | { |
| 615 | xfs_dquot_t *dqp; |
| 616 | int error; |
| 617 | |
Christoph Hellwig | 579aa9c | 2008-04-22 17:34:00 +1000 | [diff] [blame] | 618 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | error = 0; |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 620 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | /* |
| 622 | * See if we already have it in the inode itself. IO_idqpp is |
| 623 | * &i_udquot or &i_gdquot. This made the code look weird, but |
| 624 | * made the logic a lot simpler. |
| 625 | */ |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 626 | dqp = *IO_idqpp; |
| 627 | if (dqp) { |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 628 | trace_xfs_dqattach_found(dqp); |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 629 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | } |
| 631 | |
| 632 | /* |
| 633 | * udqhint is the i_udquot field in inode, and is non-NULL only |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 634 | * when the type arg is group/project. Its purpose is to save a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside |
| 636 | * the user dquot. |
| 637 | */ |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 638 | if (udqhint) { |
| 639 | ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | xfs_dqlock(udqhint); |
| 641 | |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 642 | /* |
| 643 | * No need to take dqlock to look at the id. |
| 644 | * |
| 645 | * The ID can't change until it gets reclaimed, and it won't |
| 646 | * be reclaimed as long as we have a ref from inode and we |
| 647 | * hold the ilock. |
| 648 | */ |
| 649 | dqp = udqhint->q_gdquot; |
| 650 | if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) { |
| 651 | xfs_dqlock(dqp); |
| 652 | XFS_DQHOLD(dqp); |
| 653 | ASSERT(*IO_idqpp == NULL); |
| 654 | *IO_idqpp = dqp; |
| 655 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | xfs_dqunlock(dqp); |
| 657 | xfs_dqunlock(udqhint); |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 658 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | } |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 660 | |
| 661 | /* |
| 662 | * We can't hold a dquot lock when we call the dqget code. |
| 663 | * We'll deadlock in no time, because of (not conforming to) |
| 664 | * lock ordering - the inodelock comes before any dquot lock, |
| 665 | * and we may drop and reacquire the ilock in xfs_qm_dqget(). |
| 666 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | xfs_dqunlock(udqhint); |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 668 | } |
| 669 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | /* |
| 671 | * Find the dquot from somewhere. This bumps the |
| 672 | * reference count of dquot and returns it locked. |
| 673 | * This can return ENOENT if dquot didn't exist on |
| 674 | * disk and we didn't ask it to allocate; |
| 675 | * ESRCH if quotas got turned off suddenly. |
| 676 | */ |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 677 | error = xfs_qm_dqget(ip->i_mount, ip, id, type, XFS_QMOPT_DOWARN, &dqp); |
| 678 | if (error) |
| 679 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 681 | trace_xfs_dqattach_get(dqp); |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 682 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | /* |
| 684 | * dqget may have dropped and re-acquired the ilock, but it guarantees |
| 685 | * that the dquot returned is the one that should go in the inode. |
| 686 | */ |
| 687 | *IO_idqpp = dqp; |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 688 | xfs_dqunlock(dqp); |
| 689 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | } |
| 691 | |
| 692 | |
| 693 | /* |
| 694 | * Given a udquot and gdquot, attach a ptr to the group dquot in the |
| 695 | * udquot as a hint for future lookups. The idea sounds simple, but the |
| 696 | * execution isn't, because the udquot might have a group dquot attached |
Nathan Scott | c41564b | 2006-03-29 08:55:14 +1000 | [diff] [blame] | 697 | * already and getting rid of that gets us into lock ordering constraints. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | * The process is complicated more by the fact that the dquots may or may not |
| 699 | * be locked on entry. |
| 700 | */ |
| 701 | STATIC void |
| 702 | xfs_qm_dqattach_grouphint( |
| 703 | xfs_dquot_t *udq, |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 704 | xfs_dquot_t *gdq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | { |
| 706 | xfs_dquot_t *tmp; |
| 707 | |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 708 | xfs_dqlock(udq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | |
| 710 | if ((tmp = udq->q_gdquot)) { |
| 711 | if (tmp == gdq) { |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 712 | xfs_dqunlock(udq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | return; |
| 714 | } |
| 715 | |
| 716 | udq->q_gdquot = NULL; |
| 717 | /* |
| 718 | * We can't keep any dqlocks when calling dqrele, |
| 719 | * because the freelist lock comes before dqlocks. |
| 720 | */ |
| 721 | xfs_dqunlock(udq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | /* |
| 723 | * we took a hard reference once upon a time in dqget, |
| 724 | * so give it back when the udquot no longer points at it |
| 725 | * dqput() does the unlocking of the dquot. |
| 726 | */ |
| 727 | xfs_qm_dqrele(tmp); |
| 728 | |
| 729 | xfs_dqlock(udq); |
| 730 | xfs_dqlock(gdq); |
| 731 | |
| 732 | } else { |
| 733 | ASSERT(XFS_DQ_IS_LOCKED(udq)); |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 734 | xfs_dqlock(gdq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | } |
| 736 | |
| 737 | ASSERT(XFS_DQ_IS_LOCKED(udq)); |
| 738 | ASSERT(XFS_DQ_IS_LOCKED(gdq)); |
| 739 | /* |
| 740 | * Somebody could have attached a gdquot here, |
| 741 | * when we dropped the uqlock. If so, just do nothing. |
| 742 | */ |
| 743 | if (udq->q_gdquot == NULL) { |
| 744 | XFS_DQHOLD(gdq); |
| 745 | udq->q_gdquot = gdq; |
| 746 | } |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 747 | |
| 748 | xfs_dqunlock(gdq); |
| 749 | xfs_dqunlock(udq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | } |
| 751 | |
| 752 | |
| 753 | /* |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 754 | * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON |
| 755 | * into account. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | * Inode may get unlocked and relocked in here, and the caller must deal with |
| 758 | * the consequences. |
| 759 | */ |
| 760 | int |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 761 | xfs_qm_dqattach_locked( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | xfs_inode_t *ip, |
| 763 | uint flags) |
| 764 | { |
| 765 | xfs_mount_t *mp = ip->i_mount; |
| 766 | uint nquotas = 0; |
| 767 | int error = 0; |
| 768 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 769 | if (!XFS_IS_QUOTA_RUNNING(mp) || |
| 770 | !XFS_IS_QUOTA_ON(mp) || |
| 771 | !XFS_NOT_DQATTACHED(mp, ip) || |
| 772 | ip->i_ino == mp->m_sb.sb_uquotino || |
| 773 | ip->i_ino == mp->m_sb.sb_gquotino) |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 774 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 776 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | |
| 778 | if (XFS_IS_UQUOTA_ON(mp)) { |
| 779 | error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, |
| 780 | flags & XFS_QMOPT_DQALLOC, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | NULL, &ip->i_udquot); |
| 782 | if (error) |
| 783 | goto done; |
| 784 | nquotas++; |
| 785 | } |
Christoph Hellwig | 579aa9c | 2008-04-22 17:34:00 +1000 | [diff] [blame] | 786 | |
| 787 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 788 | if (XFS_IS_OQUOTA_ON(mp)) { |
| 789 | error = XFS_IS_GQUOTA_ON(mp) ? |
| 790 | xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, |
| 791 | flags & XFS_QMOPT_DQALLOC, |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 792 | ip->i_udquot, &ip->i_gdquot) : |
Arkadiusz Mi?kiewicz | 6743099 | 2010-09-26 06:10:18 +0000 | [diff] [blame] | 793 | xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | flags & XFS_QMOPT_DQALLOC, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | ip->i_udquot, &ip->i_gdquot); |
| 796 | /* |
| 797 | * Don't worry about the udquot that we may have |
| 798 | * attached above. It'll get detached, if not already. |
| 799 | */ |
| 800 | if (error) |
| 801 | goto done; |
| 802 | nquotas++; |
| 803 | } |
| 804 | |
| 805 | /* |
| 806 | * Attach this group quota to the user quota as a hint. |
| 807 | * This WON'T, in general, result in a thrash. |
| 808 | */ |
| 809 | if (nquotas == 2) { |
Christoph Hellwig | 579aa9c | 2008-04-22 17:34:00 +1000 | [diff] [blame] | 810 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | ASSERT(ip->i_udquot); |
| 812 | ASSERT(ip->i_gdquot); |
| 813 | |
| 814 | /* |
| 815 | * We may or may not have the i_udquot locked at this point, |
| 816 | * but this check is OK since we don't depend on the i_gdquot to |
| 817 | * be accurate 100% all the time. It is just a hint, and this |
| 818 | * will succeed in general. |
| 819 | */ |
| 820 | if (ip->i_udquot->q_gdquot == ip->i_gdquot) |
| 821 | goto done; |
| 822 | /* |
| 823 | * Attach i_gdquot to the gdquot hint inside the i_udquot. |
| 824 | */ |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 825 | xfs_qm_dqattach_grouphint(ip->i_udquot, ip->i_gdquot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | } |
| 827 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 828 | done: |
Christoph Hellwig | ea15ab3 | 2011-07-13 13:43:50 +0200 | [diff] [blame] | 829 | #ifdef DEBUG |
| 830 | if (!error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | if (XFS_IS_UQUOTA_ON(mp)) |
| 832 | ASSERT(ip->i_udquot); |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 833 | if (XFS_IS_OQUOTA_ON(mp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | ASSERT(ip->i_gdquot); |
| 835 | } |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 836 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | #endif |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 838 | return error; |
| 839 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 841 | int |
| 842 | xfs_qm_dqattach( |
| 843 | struct xfs_inode *ip, |
| 844 | uint flags) |
| 845 | { |
| 846 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 848 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
| 849 | error = xfs_qm_dqattach_locked(ip, flags); |
| 850 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
| 851 | |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 852 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | } |
| 854 | |
| 855 | /* |
| 856 | * Release dquots (and their references) if any. |
| 857 | * The inode should be locked EXCL except when this's called by |
| 858 | * xfs_ireclaim. |
| 859 | */ |
| 860 | void |
| 861 | xfs_qm_dqdetach( |
| 862 | xfs_inode_t *ip) |
| 863 | { |
| 864 | if (!(ip->i_udquot || ip->i_gdquot)) |
| 865 | return; |
| 866 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 867 | trace_xfs_dquot_dqdetach(ip); |
| 868 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_uquotino); |
| 870 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_gquotino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | if (ip->i_udquot) { |
| 872 | xfs_qm_dqrele(ip->i_udquot); |
| 873 | ip->i_udquot = NULL; |
| 874 | } |
| 875 | if (ip->i_gdquot) { |
| 876 | xfs_qm_dqrele(ip->i_gdquot); |
| 877 | ip->i_gdquot = NULL; |
| 878 | } |
| 879 | } |
| 880 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | int |
| 882 | xfs_qm_sync( |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 883 | struct xfs_mount *mp, |
| 884 | int flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | { |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 886 | struct xfs_quotainfo *q = mp->m_quotainfo; |
| 887 | int recl, restarts; |
| 888 | struct xfs_dquot *dqp; |
| 889 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 891 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
Donald Douwsma | d757762 | 2007-11-23 16:27:42 +1100 | [diff] [blame] | 892 | return 0; |
| 893 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | restarts = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | |
| 896 | again: |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 897 | mutex_lock(&q->qi_dqlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | /* |
| 899 | * dqpurge_all() also takes the mplist lock and iterate thru all dquots |
| 900 | * in quotaoff. However, if the QUOTA_ACTIVE bits are not cleared |
| 901 | * when we have the mplist lock, we know that dquots will be consistent |
| 902 | * as long as we have it locked. |
| 903 | */ |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 904 | if (!XFS_IS_QUOTA_ON(mp)) { |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 905 | mutex_unlock(&q->qi_dqlist_lock); |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 906 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | } |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 908 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
| 909 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | /* |
| 911 | * If this is vfs_sync calling, then skip the dquots that |
| 912 | * don't 'seem' to be dirty. ie. don't acquire dqlock. |
| 913 | * This is very similar to what xfs_sync does with inodes. |
| 914 | */ |
Christoph Hellwig | 8b5403a | 2009-06-08 15:37:16 +0200 | [diff] [blame] | 915 | if (flags & SYNC_TRYLOCK) { |
| 916 | if (!XFS_DQ_IS_DIRTY(dqp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | continue; |
Christoph Hellwig | 8b5403a | 2009-06-08 15:37:16 +0200 | [diff] [blame] | 918 | if (!xfs_qm_dqlock_nowait(dqp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | continue; |
| 920 | } else { |
| 921 | xfs_dqlock(dqp); |
| 922 | } |
| 923 | |
| 924 | /* |
| 925 | * Now, find out for sure if this dquot is dirty or not. |
| 926 | */ |
| 927 | if (! XFS_DQ_IS_DIRTY(dqp)) { |
| 928 | xfs_dqunlock(dqp); |
| 929 | continue; |
| 930 | } |
| 931 | |
| 932 | /* XXX a sentinel would be better */ |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 933 | recl = q->qi_dqreclaims; |
David Chinner | e1f49cf | 2008-08-13 16:41:43 +1000 | [diff] [blame] | 934 | if (!xfs_dqflock_nowait(dqp)) { |
Christoph Hellwig | 8b5403a | 2009-06-08 15:37:16 +0200 | [diff] [blame] | 935 | if (flags & SYNC_TRYLOCK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | xfs_dqunlock(dqp); |
| 937 | continue; |
| 938 | } |
| 939 | /* |
| 940 | * If we can't grab the flush lock then if the caller |
Nathan Scott | c41564b | 2006-03-29 08:55:14 +1000 | [diff] [blame] | 941 | * really wanted us to give this our best shot, so |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | * see if we can give a push to the buffer before we wait |
| 943 | * on the flush lock. At this point, we know that |
Nathan Scott | c41564b | 2006-03-29 08:55:14 +1000 | [diff] [blame] | 944 | * even though the dquot is being flushed, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | * it has (new) dirty data. |
| 946 | */ |
| 947 | xfs_qm_dqflock_pushbuf_wait(dqp); |
| 948 | } |
| 949 | /* |
| 950 | * Let go of the mplist lock. We don't want to hold it |
| 951 | * across a disk write |
| 952 | */ |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 953 | mutex_unlock(&q->qi_dqlist_lock); |
Dave Chinner | 20026d9 | 2010-02-04 09:48:58 +1100 | [diff] [blame] | 954 | error = xfs_qm_dqflush(dqp, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | xfs_dqunlock(dqp); |
| 956 | if (error && XFS_FORCED_SHUTDOWN(mp)) |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 957 | return 0; /* Need to prevent umount failure */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | else if (error) |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 959 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 961 | mutex_lock(&q->qi_dqlist_lock); |
| 962 | if (recl != q->qi_dqreclaims) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | if (++restarts >= XFS_QM_SYNC_MAX_RESTARTS) |
| 964 | break; |
| 965 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 966 | mutex_unlock(&q->qi_dqlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | goto again; |
| 968 | } |
| 969 | } |
| 970 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 971 | mutex_unlock(&q->qi_dqlist_lock); |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 972 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | } |
| 974 | |
Christoph Hellwig | a4edd1d | 2009-01-19 02:03:11 +0100 | [diff] [blame] | 975 | /* |
| 976 | * The hash chains and the mplist use the same xfs_dqhash structure as |
| 977 | * their list head, but we can take the mplist qh_lock and one of the |
| 978 | * hash qh_locks at the same time without any problem as they aren't |
| 979 | * related. |
| 980 | */ |
| 981 | static struct lock_class_key xfs_quota_mplist_class; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | |
| 983 | /* |
| 984 | * This initializes all the quota information that's kept in the |
| 985 | * mount structure |
| 986 | */ |
Christoph Hellwig | ba0f32d | 2005-06-21 15:36:52 +1000 | [diff] [blame] | 987 | STATIC int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | xfs_qm_init_quotainfo( |
| 989 | xfs_mount_t *mp) |
| 990 | { |
| 991 | xfs_quotainfo_t *qinf; |
| 992 | int error; |
| 993 | xfs_dquot_t *dqp; |
| 994 | |
| 995 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
| 996 | |
| 997 | /* |
| 998 | * Tell XQM that we exist as soon as possible. |
| 999 | */ |
| 1000 | if ((error = xfs_qm_hold_quotafs_ref(mp))) { |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1001 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1002 | } |
| 1003 | |
| 1004 | qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); |
| 1005 | |
| 1006 | /* |
| 1007 | * See if quotainodes are setup, and if not, allocate them, |
| 1008 | * and change the superblock accordingly. |
| 1009 | */ |
| 1010 | if ((error = xfs_qm_init_quotainos(mp))) { |
Denys Vlasenko | f0e2d93 | 2008-05-19 16:31:57 +1000 | [diff] [blame] | 1011 | kmem_free(qinf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1012 | mp->m_quotainfo = NULL; |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1013 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | } |
| 1015 | |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 1016 | INIT_LIST_HEAD(&qinf->qi_dqlist); |
| 1017 | mutex_init(&qinf->qi_dqlist_lock); |
| 1018 | lockdep_set_class(&qinf->qi_dqlist_lock, &xfs_quota_mplist_class); |
Christoph Hellwig | a4edd1d | 2009-01-19 02:03:11 +0100 | [diff] [blame] | 1019 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | qinf->qi_dqreclaims = 0; |
| 1021 | |
| 1022 | /* mutex used to serialize quotaoffs */ |
Jes Sorensen | 794ee1b | 2006-01-09 15:59:21 -0800 | [diff] [blame] | 1023 | mutex_init(&qinf->qi_quotaofflock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | |
| 1025 | /* Precalc some constants */ |
| 1026 | qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); |
| 1027 | ASSERT(qinf->qi_dqchunklen); |
| 1028 | qinf->qi_dqperchunk = BBTOB(qinf->qi_dqchunklen); |
| 1029 | do_div(qinf->qi_dqperchunk, sizeof(xfs_dqblk_t)); |
| 1030 | |
| 1031 | mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); |
| 1032 | |
| 1033 | /* |
| 1034 | * We try to get the limits from the superuser's limits fields. |
| 1035 | * This is quite hacky, but it is standard quota practice. |
| 1036 | * We look at the USR dquot with id == 0 first, but if user quotas |
| 1037 | * are not enabled we goto the GRP dquot with id == 0. |
| 1038 | * We don't really care to keep separate default limits for user |
| 1039 | * and group quotas, at least not at this point. |
| 1040 | */ |
| 1041 | error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)0, |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 1042 | XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : |
| 1043 | (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : |
| 1044 | XFS_DQ_PROJ), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1045 | XFS_QMOPT_DQSUSER|XFS_QMOPT_DOWARN, |
| 1046 | &dqp); |
| 1047 | if (! error) { |
| 1048 | xfs_disk_dquot_t *ddqp = &dqp->q_core; |
| 1049 | |
| 1050 | /* |
| 1051 | * The warnings and timers set the grace period given to |
| 1052 | * a user or group before he or she can not perform any |
| 1053 | * more writing. If it is zero, a default is used. |
| 1054 | */ |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 1055 | qinf->qi_btimelimit = ddqp->d_btimer ? |
| 1056 | be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; |
| 1057 | qinf->qi_itimelimit = ddqp->d_itimer ? |
| 1058 | be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; |
| 1059 | qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? |
| 1060 | be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; |
| 1061 | qinf->qi_bwarnlimit = ddqp->d_bwarns ? |
| 1062 | be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; |
| 1063 | qinf->qi_iwarnlimit = ddqp->d_iwarns ? |
| 1064 | be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; |
| 1065 | qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? |
| 1066 | be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; |
| 1067 | qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); |
| 1068 | qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); |
| 1069 | qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); |
| 1070 | qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); |
| 1071 | qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); |
| 1072 | qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1073 | |
| 1074 | /* |
| 1075 | * We sent the XFS_QMOPT_DQSUSER flag to dqget because |
| 1076 | * we don't want this dquot cached. We haven't done a |
| 1077 | * quotacheck yet, and quotacheck doesn't like incore dquots. |
| 1078 | */ |
| 1079 | xfs_qm_dqdestroy(dqp); |
| 1080 | } else { |
| 1081 | qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; |
| 1082 | qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; |
| 1083 | qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; |
| 1084 | qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; |
| 1085 | qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; |
Nathan Scott | 06d10dd | 2005-06-21 15:48:47 +1000 | [diff] [blame] | 1086 | qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | } |
| 1088 | |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1089 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | } |
| 1091 | |
| 1092 | |
| 1093 | /* |
| 1094 | * Gets called when unmounting a filesystem or when all quotas get |
| 1095 | * turned off. |
| 1096 | * This purges the quota inodes, destroys locks and frees itself. |
| 1097 | */ |
| 1098 | void |
| 1099 | xfs_qm_destroy_quotainfo( |
| 1100 | xfs_mount_t *mp) |
| 1101 | { |
| 1102 | xfs_quotainfo_t *qi; |
| 1103 | |
| 1104 | qi = mp->m_quotainfo; |
| 1105 | ASSERT(qi != NULL); |
| 1106 | ASSERT(xfs_Gqm != NULL); |
| 1107 | |
| 1108 | /* |
| 1109 | * Release the reference that XQM kept, so that we know |
| 1110 | * when the XQM structure should be freed. We cannot assume |
| 1111 | * that xfs_Gqm is non-null after this point. |
| 1112 | */ |
| 1113 | xfs_qm_rele_quotafs_ref(mp); |
| 1114 | |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 1115 | ASSERT(list_empty(&qi->qi_dqlist)); |
| 1116 | mutex_destroy(&qi->qi_dqlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | |
| 1118 | if (qi->qi_uquotaip) { |
Christoph Hellwig | 26cc0021 | 2008-07-18 17:12:43 +1000 | [diff] [blame] | 1119 | IRELE(qi->qi_uquotaip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | qi->qi_uquotaip = NULL; /* paranoia */ |
| 1121 | } |
| 1122 | if (qi->qi_gquotaip) { |
Christoph Hellwig | 26cc0021 | 2008-07-18 17:12:43 +1000 | [diff] [blame] | 1123 | IRELE(qi->qi_gquotaip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | qi->qi_gquotaip = NULL; |
| 1125 | } |
| 1126 | mutex_destroy(&qi->qi_quotaofflock); |
Denys Vlasenko | f0e2d93 | 2008-05-19 16:31:57 +1000 | [diff] [blame] | 1127 | kmem_free(qi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | mp->m_quotainfo = NULL; |
| 1129 | } |
| 1130 | |
| 1131 | |
| 1132 | |
| 1133 | /* ------------------- PRIVATE STATIC FUNCTIONS ----------------------- */ |
| 1134 | |
| 1135 | /* ARGSUSED */ |
| 1136 | STATIC void |
| 1137 | xfs_qm_list_init( |
| 1138 | xfs_dqlist_t *list, |
| 1139 | char *str, |
| 1140 | int n) |
| 1141 | { |
Jes Sorensen | 794ee1b | 2006-01-09 15:59:21 -0800 | [diff] [blame] | 1142 | mutex_init(&list->qh_lock); |
Dave Chinner | e6a81f1 | 2010-04-13 15:06:51 +1000 | [diff] [blame] | 1143 | INIT_LIST_HEAD(&list->qh_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1144 | list->qh_version = 0; |
| 1145 | list->qh_nelems = 0; |
| 1146 | } |
| 1147 | |
| 1148 | STATIC void |
| 1149 | xfs_qm_list_destroy( |
| 1150 | xfs_dqlist_t *list) |
| 1151 | { |
| 1152 | mutex_destroy(&(list->qh_lock)); |
| 1153 | } |
| 1154 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | /* |
| 1156 | * Create an inode and return with a reference already taken, but unlocked |
| 1157 | * This is how we create quota inodes |
| 1158 | */ |
| 1159 | STATIC int |
| 1160 | xfs_qm_qino_alloc( |
| 1161 | xfs_mount_t *mp, |
| 1162 | xfs_inode_t **ip, |
| 1163 | __int64_t sbfields, |
| 1164 | uint flags) |
| 1165 | { |
| 1166 | xfs_trans_t *tp; |
| 1167 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | int committed; |
| 1169 | |
Nathan Scott | 061f720 | 2006-01-11 15:27:50 +1100 | [diff] [blame] | 1170 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1171 | if ((error = xfs_trans_reserve(tp, |
| 1172 | XFS_QM_QINOCREATE_SPACE_RES(mp), |
| 1173 | XFS_CREATE_LOG_RES(mp), 0, |
| 1174 | XFS_TRANS_PERM_LOG_RES, |
| 1175 | XFS_CREATE_LOG_COUNT))) { |
| 1176 | xfs_trans_cancel(tp, 0); |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1177 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1178 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1179 | |
Christoph Hellwig | 6c77b0e | 2010-10-06 18:41:17 +0000 | [diff] [blame] | 1180 | error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip, &committed); |
| 1181 | if (error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1182 | xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | |
| 1183 | XFS_TRANS_ABORT); |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1184 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | } |
| 1186 | |
| 1187 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1188 | * Make the changes in the superblock, and log those too. |
| 1189 | * sbfields arg may contain fields other than *QUOTINO; |
| 1190 | * VERSIONNUM for example. |
| 1191 | */ |
Eric Sandeen | 3685c2a | 2007-10-11 17:42:32 +1000 | [diff] [blame] | 1192 | spin_lock(&mp->m_sb_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1193 | if (flags & XFS_QMOPT_SBVERSION) { |
Eric Sandeen | 6211870 | 2008-03-06 13:44:28 +1100 | [diff] [blame] | 1194 | ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1195 | ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
| 1196 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)) == |
| 1197 | (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
| 1198 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)); |
| 1199 | |
Eric Sandeen | 6211870 | 2008-03-06 13:44:28 +1100 | [diff] [blame] | 1200 | xfs_sb_version_addquota(&mp->m_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1201 | mp->m_sb.sb_uquotino = NULLFSINO; |
| 1202 | mp->m_sb.sb_gquotino = NULLFSINO; |
| 1203 | |
| 1204 | /* qflags will get updated _after_ quotacheck */ |
| 1205 | mp->m_sb.sb_qflags = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | } |
| 1207 | if (flags & XFS_QMOPT_UQUOTA) |
| 1208 | mp->m_sb.sb_uquotino = (*ip)->i_ino; |
| 1209 | else |
| 1210 | mp->m_sb.sb_gquotino = (*ip)->i_ino; |
Eric Sandeen | 3685c2a | 2007-10-11 17:42:32 +1000 | [diff] [blame] | 1211 | spin_unlock(&mp->m_sb_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1212 | xfs_mod_sb(tp, sbfields); |
| 1213 | |
Eric Sandeen | 1c72bf9 | 2007-05-08 13:48:42 +1000 | [diff] [blame] | 1214 | if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { |
Dave Chinner | 5348778 | 2011-03-07 10:05:35 +1100 | [diff] [blame] | 1215 | xfs_alert(mp, "%s failed (error %d)!", __func__, error); |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1216 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1217 | } |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1218 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1219 | } |
| 1220 | |
| 1221 | |
David Chinner | 5b13973 | 2008-04-10 12:20:10 +1000 | [diff] [blame] | 1222 | STATIC void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1223 | xfs_qm_reset_dqcounts( |
| 1224 | xfs_mount_t *mp, |
| 1225 | xfs_buf_t *bp, |
| 1226 | xfs_dqid_t id, |
| 1227 | uint type) |
| 1228 | { |
| 1229 | xfs_disk_dquot_t *ddq; |
| 1230 | int j; |
| 1231 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1232 | trace_xfs_reset_dqcounts(bp, _RET_IP_); |
| 1233 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1234 | /* |
| 1235 | * Reset all counters and timers. They'll be |
| 1236 | * started afresh by xfs_qm_quotacheck. |
| 1237 | */ |
| 1238 | #ifdef DEBUG |
| 1239 | j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); |
| 1240 | do_div(j, sizeof(xfs_dqblk_t)); |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 1241 | ASSERT(mp->m_quotainfo->qi_dqperchunk == j); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1242 | #endif |
Chandra Seetharaman | 6292604 | 2011-07-22 23:40:15 +0000 | [diff] [blame] | 1243 | ddq = bp->b_addr; |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 1244 | for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1245 | /* |
| 1246 | * Do a sanity check, and if needed, repair the dqblk. Don't |
| 1247 | * output any warnings because it's perfectly possible to |
Nathan Scott | c41564b | 2006-03-29 08:55:14 +1000 | [diff] [blame] | 1248 | * find uninitialised dquot blks. See comment in xfs_qm_dqcheck. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1249 | */ |
Dave Chinner | a0fa2b6 | 2011-03-07 10:01:35 +1100 | [diff] [blame] | 1250 | (void) xfs_qm_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1251 | "xfs_quotacheck"); |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 1252 | ddq->d_bcount = 0; |
| 1253 | ddq->d_icount = 0; |
| 1254 | ddq->d_rtbcount = 0; |
| 1255 | ddq->d_btimer = 0; |
| 1256 | ddq->d_itimer = 0; |
| 1257 | ddq->d_rtbtimer = 0; |
| 1258 | ddq->d_bwarns = 0; |
| 1259 | ddq->d_iwarns = 0; |
| 1260 | ddq->d_rtbwarns = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | ddq = (xfs_disk_dquot_t *) ((xfs_dqblk_t *)ddq + 1); |
| 1262 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1263 | } |
| 1264 | |
| 1265 | STATIC int |
| 1266 | xfs_qm_dqiter_bufs( |
| 1267 | xfs_mount_t *mp, |
| 1268 | xfs_dqid_t firstid, |
| 1269 | xfs_fsblock_t bno, |
| 1270 | xfs_filblks_t blkcnt, |
| 1271 | uint flags) |
| 1272 | { |
| 1273 | xfs_buf_t *bp; |
| 1274 | int error; |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 1275 | int type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | |
| 1277 | ASSERT(blkcnt > 0); |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 1278 | type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : |
| 1279 | (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | error = 0; |
| 1281 | |
| 1282 | /* |
| 1283 | * Blkcnt arg can be a very big number, and might even be |
| 1284 | * larger than the log itself. So, we have to break it up into |
| 1285 | * manageable-sized transactions. |
| 1286 | * Note that we don't start a permanent transaction here; we might |
| 1287 | * not be able to get a log reservation for the whole thing up front, |
| 1288 | * and we don't really care to either, because we just discard |
| 1289 | * everything if we were to crash in the middle of this loop. |
| 1290 | */ |
| 1291 | while (blkcnt--) { |
| 1292 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, |
| 1293 | XFS_FSB_TO_DADDR(mp, bno), |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 1294 | mp->m_quotainfo->qi_dqchunklen, 0, &bp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | if (error) |
| 1296 | break; |
| 1297 | |
David Chinner | 5b13973 | 2008-04-10 12:20:10 +1000 | [diff] [blame] | 1298 | xfs_qm_reset_dqcounts(mp, bp, firstid, type); |
Christoph Hellwig | 61551f1 | 2011-08-23 08:28:06 +0000 | [diff] [blame^] | 1299 | xfs_buf_delwri_queue(bp); |
| 1300 | xfs_buf_relse(bp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1301 | /* |
| 1302 | * goto the next block. |
| 1303 | */ |
| 1304 | bno++; |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 1305 | firstid += mp->m_quotainfo->qi_dqperchunk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1306 | } |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1307 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1308 | } |
| 1309 | |
| 1310 | /* |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 1311 | * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1312 | * caller supplied function for every chunk of dquots that we find. |
| 1313 | */ |
| 1314 | STATIC int |
| 1315 | xfs_qm_dqiterate( |
| 1316 | xfs_mount_t *mp, |
| 1317 | xfs_inode_t *qip, |
| 1318 | uint flags) |
| 1319 | { |
| 1320 | xfs_bmbt_irec_t *map; |
| 1321 | int i, nmaps; /* number of map entries */ |
| 1322 | int error; /* return value */ |
| 1323 | xfs_fileoff_t lblkno; |
| 1324 | xfs_filblks_t maxlblkcnt; |
| 1325 | xfs_dqid_t firstid; |
| 1326 | xfs_fsblock_t rablkno; |
| 1327 | xfs_filblks_t rablkcnt; |
| 1328 | |
| 1329 | error = 0; |
| 1330 | /* |
Nathan Scott | c41564b | 2006-03-29 08:55:14 +1000 | [diff] [blame] | 1331 | * This looks racy, but we can't keep an inode lock across a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1332 | * trans_reserve. But, this gets called during quotacheck, and that |
| 1333 | * happens only at mount time which is single threaded. |
| 1334 | */ |
| 1335 | if (qip->i_d.di_nblocks == 0) |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1336 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1337 | |
| 1338 | map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); |
| 1339 | |
| 1340 | lblkno = 0; |
| 1341 | maxlblkcnt = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp)); |
| 1342 | do { |
| 1343 | nmaps = XFS_DQITER_MAP_SIZE; |
| 1344 | /* |
| 1345 | * We aren't changing the inode itself. Just changing |
| 1346 | * some of its data. No new blocks are added here, and |
| 1347 | * the inode is never added to the transaction. |
| 1348 | */ |
| 1349 | xfs_ilock(qip, XFS_ILOCK_SHARED); |
| 1350 | error = xfs_bmapi(NULL, qip, lblkno, |
| 1351 | maxlblkcnt - lblkno, |
| 1352 | XFS_BMAPI_METADATA, |
| 1353 | NULL, |
Christoph Hellwig | b4e9181 | 2010-06-23 18:11:15 +1000 | [diff] [blame] | 1354 | 0, map, &nmaps, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1355 | xfs_iunlock(qip, XFS_ILOCK_SHARED); |
| 1356 | if (error) |
| 1357 | break; |
| 1358 | |
| 1359 | ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); |
| 1360 | for (i = 0; i < nmaps; i++) { |
| 1361 | ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); |
| 1362 | ASSERT(map[i].br_blockcount); |
| 1363 | |
| 1364 | |
| 1365 | lblkno += map[i].br_blockcount; |
| 1366 | |
| 1367 | if (map[i].br_startblock == HOLESTARTBLOCK) |
| 1368 | continue; |
| 1369 | |
| 1370 | firstid = (xfs_dqid_t) map[i].br_startoff * |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 1371 | mp->m_quotainfo->qi_dqperchunk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | /* |
| 1373 | * Do a read-ahead on the next extent. |
| 1374 | */ |
| 1375 | if ((i+1 < nmaps) && |
| 1376 | (map[i+1].br_startblock != HOLESTARTBLOCK)) { |
| 1377 | rablkcnt = map[i+1].br_blockcount; |
| 1378 | rablkno = map[i+1].br_startblock; |
| 1379 | while (rablkcnt--) { |
Christoph Hellwig | 1a1a3e9 | 2010-10-06 18:41:18 +0000 | [diff] [blame] | 1380 | xfs_buf_readahead(mp->m_ddev_targp, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1381 | XFS_FSB_TO_DADDR(mp, rablkno), |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 1382 | mp->m_quotainfo->qi_dqchunklen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1383 | rablkno++; |
| 1384 | } |
| 1385 | } |
| 1386 | /* |
| 1387 | * Iterate thru all the blks in the extent and |
| 1388 | * reset the counters of all the dquots inside them. |
| 1389 | */ |
| 1390 | if ((error = xfs_qm_dqiter_bufs(mp, |
| 1391 | firstid, |
| 1392 | map[i].br_startblock, |
| 1393 | map[i].br_blockcount, |
| 1394 | flags))) { |
| 1395 | break; |
| 1396 | } |
| 1397 | } |
| 1398 | |
| 1399 | if (error) |
| 1400 | break; |
| 1401 | } while (nmaps > 0); |
| 1402 | |
Denys Vlasenko | f0e2d93 | 2008-05-19 16:31:57 +1000 | [diff] [blame] | 1403 | kmem_free(map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1404 | |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1405 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | } |
| 1407 | |
| 1408 | /* |
| 1409 | * Called by dqusage_adjust in doing a quotacheck. |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1410 | * |
| 1411 | * Given the inode, and a dquot id this updates both the incore dqout as well |
| 1412 | * as the buffer copy. This is so that once the quotacheck is done, we can |
| 1413 | * just log all the buffers, as opposed to logging numerous updates to |
| 1414 | * individual dquots. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | */ |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1416 | STATIC int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1417 | xfs_qm_quotacheck_dqadjust( |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1418 | struct xfs_inode *ip, |
| 1419 | xfs_dqid_t id, |
| 1420 | uint type, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1421 | xfs_qcnt_t nblks, |
| 1422 | xfs_qcnt_t rtblks) |
| 1423 | { |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1424 | struct xfs_mount *mp = ip->i_mount; |
| 1425 | struct xfs_dquot *dqp; |
| 1426 | int error; |
| 1427 | |
| 1428 | error = xfs_qm_dqget(mp, ip, id, type, |
| 1429 | XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp); |
| 1430 | if (error) { |
| 1431 | /* |
| 1432 | * Shouldn't be able to turn off quotas here. |
| 1433 | */ |
| 1434 | ASSERT(error != ESRCH); |
| 1435 | ASSERT(error != ENOENT); |
| 1436 | return error; |
| 1437 | } |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1438 | |
| 1439 | trace_xfs_dqadjust(dqp); |
| 1440 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | /* |
| 1442 | * Adjust the inode count and the block count to reflect this inode's |
| 1443 | * resource usage. |
| 1444 | */ |
Marcin Slusarz | 413d57c | 2008-02-13 15:03:29 -0800 | [diff] [blame] | 1445 | be64_add_cpu(&dqp->q_core.d_icount, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1446 | dqp->q_res_icount++; |
| 1447 | if (nblks) { |
Marcin Slusarz | 413d57c | 2008-02-13 15:03:29 -0800 | [diff] [blame] | 1448 | be64_add_cpu(&dqp->q_core.d_bcount, nblks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1449 | dqp->q_res_bcount += nblks; |
| 1450 | } |
| 1451 | if (rtblks) { |
Marcin Slusarz | 413d57c | 2008-02-13 15:03:29 -0800 | [diff] [blame] | 1452 | be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | dqp->q_res_rtbcount += rtblks; |
| 1454 | } |
| 1455 | |
| 1456 | /* |
| 1457 | * Set default limits, adjust timers (since we changed usages) |
Christoph Hellwig | 191f848 | 2010-04-20 17:01:53 +1000 | [diff] [blame] | 1458 | * |
| 1459 | * There are no timers for the default values set in the root dquot. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1460 | */ |
Christoph Hellwig | 191f848 | 2010-04-20 17:01:53 +1000 | [diff] [blame] | 1461 | if (dqp->q_core.d_id) { |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1462 | xfs_qm_adjust_dqlimits(mp, &dqp->q_core); |
| 1463 | xfs_qm_adjust_dqtimers(mp, &dqp->q_core); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1464 | } |
| 1465 | |
| 1466 | dqp->dq_flags |= XFS_DQ_DIRTY; |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1467 | xfs_qm_dqput(dqp); |
| 1468 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | } |
| 1470 | |
| 1471 | STATIC int |
| 1472 | xfs_qm_get_rtblks( |
| 1473 | xfs_inode_t *ip, |
| 1474 | xfs_qcnt_t *O_rtblks) |
| 1475 | { |
| 1476 | xfs_filblks_t rtblks; /* total rt blks */ |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 1477 | xfs_extnum_t idx; /* extent record index */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1478 | xfs_ifork_t *ifp; /* inode fork pointer */ |
| 1479 | xfs_extnum_t nextents; /* number of extent entries */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1480 | int error; |
| 1481 | |
| 1482 | ASSERT(XFS_IS_REALTIME_INODE(ip)); |
| 1483 | ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); |
| 1484 | if (!(ifp->if_flags & XFS_IFEXTENTS)) { |
| 1485 | if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1486 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1487 | } |
| 1488 | rtblks = 0; |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 1489 | nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 1490 | for (idx = 0; idx < nextents; idx++) |
| 1491 | rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1492 | *O_rtblks = (xfs_qcnt_t)rtblks; |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1493 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1494 | } |
| 1495 | |
| 1496 | /* |
| 1497 | * callback routine supplied to bulkstat(). Given an inumber, find its |
| 1498 | * dquots and update them to account for resources taken by that inode. |
| 1499 | */ |
| 1500 | /* ARGSUSED */ |
| 1501 | STATIC int |
| 1502 | xfs_qm_dqusage_adjust( |
| 1503 | xfs_mount_t *mp, /* mount point for filesystem */ |
| 1504 | xfs_ino_t ino, /* inode number to get data for */ |
| 1505 | void __user *buffer, /* not used */ |
| 1506 | int ubsize, /* not used */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1507 | int *ubused, /* not used */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1508 | int *res) /* result code value */ |
| 1509 | { |
| 1510 | xfs_inode_t *ip; |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1511 | xfs_qcnt_t nblks, rtblks = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1512 | int error; |
| 1513 | |
| 1514 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
| 1515 | |
| 1516 | /* |
| 1517 | * rootino must have its resources accounted for, not so with the quota |
| 1518 | * inodes. |
| 1519 | */ |
| 1520 | if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) { |
| 1521 | *res = BULKSTAT_RV_NOTHING; |
| 1522 | return XFS_ERROR(EINVAL); |
| 1523 | } |
| 1524 | |
| 1525 | /* |
| 1526 | * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget |
| 1527 | * interface expects the inode to be exclusively locked because that's |
| 1528 | * the case in all other instances. It's OK that we do this because |
| 1529 | * quotacheck is done only at mount time. |
| 1530 | */ |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1531 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip); |
| 1532 | if (error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1533 | *res = BULKSTAT_RV_NOTHING; |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1534 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1535 | } |
| 1536 | |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1537 | ASSERT(ip->i_delayed_blks == 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1538 | |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1539 | if (XFS_IS_REALTIME_INODE(ip)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1540 | /* |
| 1541 | * Walk thru the extent list and count the realtime blocks. |
| 1542 | */ |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1543 | error = xfs_qm_get_rtblks(ip, &rtblks); |
| 1544 | if (error) |
| 1545 | goto error0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1546 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1547 | |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1548 | nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1549 | |
| 1550 | /* |
| 1551 | * Add the (disk blocks and inode) resources occupied by this |
| 1552 | * inode to its dquots. We do this adjustment in the incore dquot, |
| 1553 | * and also copy the changes to its buffer. |
| 1554 | * We don't care about putting these changes in a transaction |
| 1555 | * envelope because if we crash in the middle of a 'quotacheck' |
| 1556 | * we have to start from the beginning anyway. |
| 1557 | * Once we're done, we'll log all the dquot bufs. |
| 1558 | * |
Nathan Scott | c41564b | 2006-03-29 08:55:14 +1000 | [diff] [blame] | 1559 | * The *QUOTA_ON checks below may look pretty racy, but quotachecks |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1560 | * and quotaoffs don't race. (Quotachecks happen at mount time only). |
| 1561 | */ |
| 1562 | if (XFS_IS_UQUOTA_ON(mp)) { |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1563 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid, |
| 1564 | XFS_DQ_USER, nblks, rtblks); |
| 1565 | if (error) |
| 1566 | goto error0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1567 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1568 | |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1569 | if (XFS_IS_GQUOTA_ON(mp)) { |
| 1570 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid, |
| 1571 | XFS_DQ_GROUP, nblks, rtblks); |
| 1572 | if (error) |
| 1573 | goto error0; |
| 1574 | } |
| 1575 | |
| 1576 | if (XFS_IS_PQUOTA_ON(mp)) { |
Arkadiusz Mi?kiewicz | 6743099 | 2010-09-26 06:10:18 +0000 | [diff] [blame] | 1577 | error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip), |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1578 | XFS_DQ_PROJ, nblks, rtblks); |
| 1579 | if (error) |
| 1580 | goto error0; |
| 1581 | } |
| 1582 | |
| 1583 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
| 1584 | IRELE(ip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1585 | *res = BULKSTAT_RV_DIDONE; |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1586 | return 0; |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1587 | |
| 1588 | error0: |
| 1589 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
| 1590 | IRELE(ip); |
| 1591 | *res = BULKSTAT_RV_GIVEUP; |
| 1592 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1593 | } |
| 1594 | |
| 1595 | /* |
| 1596 | * Walk thru all the filesystem inodes and construct a consistent view |
| 1597 | * of the disk quota world. If the quotacheck fails, disable quotas. |
| 1598 | */ |
| 1599 | int |
| 1600 | xfs_qm_quotacheck( |
| 1601 | xfs_mount_t *mp) |
| 1602 | { |
| 1603 | int done, count, error; |
| 1604 | xfs_ino_t lastino; |
| 1605 | size_t structsz; |
| 1606 | xfs_inode_t *uip, *gip; |
| 1607 | uint flags; |
| 1608 | |
| 1609 | count = INT_MAX; |
| 1610 | structsz = 1; |
| 1611 | lastino = 0; |
| 1612 | flags = 0; |
| 1613 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 1614 | ASSERT(mp->m_quotainfo->qi_uquotaip || mp->m_quotainfo->qi_gquotaip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1615 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
| 1616 | |
| 1617 | /* |
| 1618 | * There should be no cached dquots. The (simplistic) quotacheck |
| 1619 | * algorithm doesn't like that. |
| 1620 | */ |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 1621 | ASSERT(list_empty(&mp->m_quotainfo->qi_dqlist)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1622 | |
Dave Chinner | 0b932cc | 2011-03-07 10:08:35 +1100 | [diff] [blame] | 1623 | xfs_notice(mp, "Quotacheck needed: Please wait."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1624 | |
| 1625 | /* |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 1626 | * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1627 | * their counters to zero. We need a clean slate. |
| 1628 | * We don't log our changes till later. |
| 1629 | */ |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 1630 | uip = mp->m_quotainfo->qi_uquotaip; |
| 1631 | if (uip) { |
| 1632 | error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA); |
| 1633 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1634 | goto error_return; |
| 1635 | flags |= XFS_UQUOTA_CHKD; |
| 1636 | } |
| 1637 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 1638 | gip = mp->m_quotainfo->qi_gquotaip; |
| 1639 | if (gip) { |
| 1640 | error = xfs_qm_dqiterate(mp, gip, XFS_IS_GQUOTA_ON(mp) ? |
| 1641 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); |
| 1642 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1643 | goto error_return; |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 1644 | flags |= XFS_OQUOTA_CHKD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1645 | } |
| 1646 | |
| 1647 | do { |
| 1648 | /* |
| 1649 | * Iterate thru all the inodes in the file system, |
| 1650 | * adjusting the corresponding dquot counters in core. |
| 1651 | */ |
Christoph Hellwig | 7dce11d | 2010-06-23 18:11:11 +1000 | [diff] [blame] | 1652 | error = xfs_bulkstat(mp, &lastino, &count, |
| 1653 | xfs_qm_dqusage_adjust, |
| 1654 | structsz, NULL, &done); |
| 1655 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1656 | break; |
| 1657 | |
Christoph Hellwig | 7dce11d | 2010-06-23 18:11:11 +1000 | [diff] [blame] | 1658 | } while (!done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1659 | |
| 1660 | /* |
David Chinner | 4b8879d | 2008-04-10 12:20:17 +1000 | [diff] [blame] | 1661 | * We've made all the changes that we need to make incore. |
| 1662 | * Flush them down to disk buffers if everything was updated |
| 1663 | * successfully. |
| 1664 | */ |
| 1665 | if (!error) |
Dave Chinner | 20026d9 | 2010-02-04 09:48:58 +1100 | [diff] [blame] | 1666 | error = xfs_qm_dqflush_all(mp, 0); |
David Chinner | 4b8879d | 2008-04-10 12:20:17 +1000 | [diff] [blame] | 1667 | |
| 1668 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1669 | * We can get this error if we couldn't do a dquot allocation inside |
| 1670 | * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the |
| 1671 | * dirty dquots that might be cached, we just want to get rid of them |
| 1672 | * and turn quotaoff. The dquots won't be attached to any of the inodes |
| 1673 | * at this point (because we intentionally didn't in dqget_noattach). |
| 1674 | */ |
| 1675 | if (error) { |
Christoph Hellwig | 8112e9d | 2010-04-20 17:02:29 +1000 | [diff] [blame] | 1676 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1677 | goto error_return; |
| 1678 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1679 | |
| 1680 | /* |
| 1681 | * We didn't log anything, because if we crashed, we'll have to |
| 1682 | * start the quotacheck from scratch anyway. However, we must make |
| 1683 | * sure that our dquot changes are secure before we put the |
| 1684 | * quotacheck'd stamp on the superblock. So, here we do a synchronous |
| 1685 | * flush. |
| 1686 | */ |
| 1687 | XFS_bflush(mp->m_ddev_targp); |
| 1688 | |
| 1689 | /* |
| 1690 | * If one type of quotas is off, then it will lose its |
| 1691 | * quotachecked status, since we won't be doing accounting for |
| 1692 | * that type anymore. |
| 1693 | */ |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 1694 | mp->m_qflags &= ~(XFS_OQUOTA_CHKD | XFS_UQUOTA_CHKD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1695 | mp->m_qflags |= flags; |
| 1696 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1697 | error_return: |
| 1698 | if (error) { |
Dave Chinner | 0b932cc | 2011-03-07 10:08:35 +1100 | [diff] [blame] | 1699 | xfs_warn(mp, |
| 1700 | "Quotacheck: Unsuccessful (Error %d): Disabling quotas.", |
| 1701 | error); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1702 | /* |
| 1703 | * We must turn off quotas. |
| 1704 | */ |
| 1705 | ASSERT(mp->m_quotainfo != NULL); |
| 1706 | ASSERT(xfs_Gqm != NULL); |
| 1707 | xfs_qm_destroy_quotainfo(mp); |
David Chinner | 31d5577 | 2008-04-10 12:20:38 +1000 | [diff] [blame] | 1708 | if (xfs_mount_reset_sbqflags(mp)) { |
Dave Chinner | 0b932cc | 2011-03-07 10:08:35 +1100 | [diff] [blame] | 1709 | xfs_warn(mp, |
| 1710 | "Quotacheck: Failed to reset quota flags."); |
David Chinner | 31d5577 | 2008-04-10 12:20:38 +1000 | [diff] [blame] | 1711 | } |
Dave Chinner | 0b932cc | 2011-03-07 10:08:35 +1100 | [diff] [blame] | 1712 | } else |
| 1713 | xfs_notice(mp, "Quotacheck: Done."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1714 | return (error); |
| 1715 | } |
| 1716 | |
| 1717 | /* |
| 1718 | * This is called after the superblock has been read in and we're ready to |
| 1719 | * iget the quota inodes. |
| 1720 | */ |
| 1721 | STATIC int |
| 1722 | xfs_qm_init_quotainos( |
| 1723 | xfs_mount_t *mp) |
| 1724 | { |
| 1725 | xfs_inode_t *uip, *gip; |
| 1726 | int error; |
| 1727 | __int64_t sbflags; |
| 1728 | uint flags; |
| 1729 | |
| 1730 | ASSERT(mp->m_quotainfo); |
| 1731 | uip = gip = NULL; |
| 1732 | sbflags = 0; |
| 1733 | flags = 0; |
| 1734 | |
| 1735 | /* |
| 1736 | * Get the uquota and gquota inodes |
| 1737 | */ |
Eric Sandeen | 6211870 | 2008-03-06 13:44:28 +1100 | [diff] [blame] | 1738 | if (xfs_sb_version_hasquota(&mp->m_sb)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1739 | if (XFS_IS_UQUOTA_ON(mp) && |
| 1740 | mp->m_sb.sb_uquotino != NULLFSINO) { |
| 1741 | ASSERT(mp->m_sb.sb_uquotino > 0); |
| 1742 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, |
Dave Chinner | 7b6259e | 2010-06-24 11:35:17 +1000 | [diff] [blame] | 1743 | 0, 0, &uip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1744 | return XFS_ERROR(error); |
| 1745 | } |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 1746 | if (XFS_IS_OQUOTA_ON(mp) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1747 | mp->m_sb.sb_gquotino != NULLFSINO) { |
| 1748 | ASSERT(mp->m_sb.sb_gquotino > 0); |
| 1749 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, |
Dave Chinner | 7b6259e | 2010-06-24 11:35:17 +1000 | [diff] [blame] | 1750 | 0, 0, &gip))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1751 | if (uip) |
Christoph Hellwig | 4335509 | 2008-03-27 18:01:08 +1100 | [diff] [blame] | 1752 | IRELE(uip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1753 | return XFS_ERROR(error); |
| 1754 | } |
| 1755 | } |
| 1756 | } else { |
| 1757 | flags |= XFS_QMOPT_SBVERSION; |
| 1758 | sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
| 1759 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS); |
| 1760 | } |
| 1761 | |
| 1762 | /* |
| 1763 | * Create the two inodes, if they don't exist already. The changes |
| 1764 | * made above will get added to a transaction and logged in one of |
| 1765 | * the qino_alloc calls below. If the device is readonly, |
| 1766 | * temporarily switch to read-write to do this. |
| 1767 | */ |
| 1768 | if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { |
| 1769 | if ((error = xfs_qm_qino_alloc(mp, &uip, |
| 1770 | sbflags | XFS_SB_UQUOTINO, |
| 1771 | flags | XFS_QMOPT_UQUOTA))) |
| 1772 | return XFS_ERROR(error); |
| 1773 | |
| 1774 | flags &= ~XFS_QMOPT_SBVERSION; |
| 1775 | } |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 1776 | if (XFS_IS_OQUOTA_ON(mp) && gip == NULL) { |
| 1777 | flags |= (XFS_IS_GQUOTA_ON(mp) ? |
| 1778 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); |
| 1779 | error = xfs_qm_qino_alloc(mp, &gip, |
| 1780 | sbflags | XFS_SB_GQUOTINO, flags); |
| 1781 | if (error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1782 | if (uip) |
Christoph Hellwig | 4335509 | 2008-03-27 18:01:08 +1100 | [diff] [blame] | 1783 | IRELE(uip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1784 | |
| 1785 | return XFS_ERROR(error); |
| 1786 | } |
| 1787 | } |
| 1788 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 1789 | mp->m_quotainfo->qi_uquotaip = uip; |
| 1790 | mp->m_quotainfo->qi_gquotaip = gip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1791 | |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1792 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1793 | } |
| 1794 | |
| 1795 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1796 | |
| 1797 | /* |
| 1798 | * Just pop the least recently used dquot off the freelist and |
| 1799 | * recycle it. The returned dquot is locked. |
| 1800 | */ |
| 1801 | STATIC xfs_dquot_t * |
| 1802 | xfs_qm_dqreclaim_one(void) |
| 1803 | { |
| 1804 | xfs_dquot_t *dqpout; |
| 1805 | xfs_dquot_t *dqp; |
| 1806 | int restarts; |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1807 | int startagain; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1808 | |
| 1809 | restarts = 0; |
| 1810 | dqpout = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1811 | |
| 1812 | /* lockorder: hashchainlock, freelistlock, mplistlock, dqlock, dqflock */ |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1813 | again: |
| 1814 | startagain = 0; |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 1815 | mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1816 | |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 1817 | list_for_each_entry(dqp, &xfs_Gqm->qm_dqfrlist, q_freelist) { |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 1818 | struct xfs_mount *mp = dqp->q_mount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1819 | xfs_dqlock(dqp); |
| 1820 | |
| 1821 | /* |
| 1822 | * We are racing with dqlookup here. Naturally we don't |
| 1823 | * want to reclaim a dquot that lookup wants. We release the |
| 1824 | * freelist lock and start over, so that lookup will grab |
| 1825 | * both the dquot and the freelistlock. |
| 1826 | */ |
| 1827 | if (dqp->dq_flags & XFS_DQ_WANT) { |
| 1828 | ASSERT(! (dqp->dq_flags & XFS_DQ_INACTIVE)); |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1829 | |
| 1830 | trace_xfs_dqreclaim_want(dqp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1831 | XQM_STATS_INC(xqmstats.xs_qm_dqwants); |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1832 | restarts++; |
| 1833 | startagain = 1; |
| 1834 | goto dqunlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1835 | } |
| 1836 | |
| 1837 | /* |
| 1838 | * If the dquot is inactive, we are assured that it is |
| 1839 | * not on the mplist or the hashlist, and that makes our |
| 1840 | * life easier. |
| 1841 | */ |
| 1842 | if (dqp->dq_flags & XFS_DQ_INACTIVE) { |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 1843 | ASSERT(mp == NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1844 | ASSERT(! XFS_DQ_IS_DIRTY(dqp)); |
Dave Chinner | e6a81f1 | 2010-04-13 15:06:51 +1000 | [diff] [blame] | 1845 | ASSERT(list_empty(&dqp->q_hashlist)); |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 1846 | ASSERT(list_empty(&dqp->q_mplist)); |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 1847 | list_del_init(&dqp->q_freelist); |
| 1848 | xfs_Gqm->qm_dqfrlist_cnt--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1849 | dqpout = dqp; |
| 1850 | XQM_STATS_INC(xqmstats.xs_qm_dqinact_reclaims); |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1851 | goto dqunlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1852 | } |
| 1853 | |
| 1854 | ASSERT(dqp->q_hash); |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 1855 | ASSERT(!list_empty(&dqp->q_mplist)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1856 | |
| 1857 | /* |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1858 | * Try to grab the flush lock. If this dquot is in the process |
| 1859 | * of getting flushed to disk, we don't want to reclaim it. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1860 | */ |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1861 | if (!xfs_dqflock_nowait(dqp)) |
| 1862 | goto dqunlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1863 | |
| 1864 | /* |
| 1865 | * We have the flush lock so we know that this is not in the |
| 1866 | * process of being flushed. So, if this is dirty, flush it |
| 1867 | * DELWRI so that we don't get a freelist infested with |
| 1868 | * dirty dquots. |
| 1869 | */ |
| 1870 | if (XFS_DQ_IS_DIRTY(dqp)) { |
David Chinner | 3c56836 | 2008-04-10 12:20:24 +1000 | [diff] [blame] | 1871 | int error; |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1872 | |
| 1873 | trace_xfs_dqreclaim_dirty(dqp); |
| 1874 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1875 | /* |
| 1876 | * We flush it delayed write, so don't bother |
| 1877 | * releasing the freelist lock. |
| 1878 | */ |
Dave Chinner | 20026d9 | 2010-02-04 09:48:58 +1100 | [diff] [blame] | 1879 | error = xfs_qm_dqflush(dqp, 0); |
David Chinner | 3c56836 | 2008-04-10 12:20:24 +1000 | [diff] [blame] | 1880 | if (error) { |
Dave Chinner | 5348778 | 2011-03-07 10:05:35 +1100 | [diff] [blame] | 1881 | xfs_warn(mp, "%s: dquot %p flush failed", |
| 1882 | __func__, dqp); |
David Chinner | 3c56836 | 2008-04-10 12:20:24 +1000 | [diff] [blame] | 1883 | } |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1884 | goto dqunlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1885 | } |
| 1886 | |
Dave Chinner | 368e136 | 2010-04-13 15:06:50 +1000 | [diff] [blame] | 1887 | /* |
| 1888 | * We're trying to get the hashlock out of order. This races |
| 1889 | * with dqlookup; so, we giveup and goto the next dquot if |
| 1890 | * we couldn't get the hashlock. This way, we won't starve |
| 1891 | * a dqlookup process that holds the hashlock that is |
| 1892 | * waiting for the freelist lock. |
| 1893 | */ |
| 1894 | if (!mutex_trylock(&dqp->q_hash->qh_lock)) { |
| 1895 | restarts++; |
| 1896 | goto dqfunlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1897 | } |
| 1898 | |
Dave Chinner | 368e136 | 2010-04-13 15:06:50 +1000 | [diff] [blame] | 1899 | /* |
| 1900 | * This races with dquot allocation code as well as dqflush_all |
| 1901 | * and reclaim code. So, if we failed to grab the mplist lock, |
| 1902 | * giveup everything and start over. |
| 1903 | */ |
| 1904 | if (!mutex_trylock(&mp->m_quotainfo->qi_dqlist_lock)) { |
| 1905 | restarts++; |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1906 | startagain = 1; |
| 1907 | goto qhunlock; |
Dave Chinner | 368e136 | 2010-04-13 15:06:50 +1000 | [diff] [blame] | 1908 | } |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1909 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1910 | ASSERT(dqp->q_nrefs == 0); |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 1911 | list_del_init(&dqp->q_mplist); |
| 1912 | mp->m_quotainfo->qi_dquots--; |
| 1913 | mp->m_quotainfo->qi_dqreclaims++; |
Dave Chinner | e6a81f1 | 2010-04-13 15:06:51 +1000 | [diff] [blame] | 1914 | list_del_init(&dqp->q_hashlist); |
| 1915 | dqp->q_hash->qh_version++; |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 1916 | list_del_init(&dqp->q_freelist); |
| 1917 | xfs_Gqm->qm_dqfrlist_cnt--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1918 | dqpout = dqp; |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 1919 | mutex_unlock(&mp->m_quotainfo->qi_dqlist_lock); |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1920 | qhunlock: |
Dave Chinner | 368e136 | 2010-04-13 15:06:50 +1000 | [diff] [blame] | 1921 | mutex_unlock(&dqp->q_hash->qh_lock); |
| 1922 | dqfunlock: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1923 | xfs_dqfunlock(dqp); |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1924 | dqunlock: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1925 | xfs_dqunlock(dqp); |
| 1926 | if (dqpout) |
| 1927 | break; |
Dave Chinner | 368e136 | 2010-04-13 15:06:50 +1000 | [diff] [blame] | 1928 | if (restarts >= XFS_QM_RECLAIM_MAX_RESTARTS) |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1929 | break; |
| 1930 | if (startagain) { |
| 1931 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
| 1932 | goto again; |
| 1933 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1934 | } |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 1935 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1936 | return dqpout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1937 | } |
| 1938 | |
Dave Chinner | 368e136 | 2010-04-13 15:06:50 +1000 | [diff] [blame] | 1939 | /* |
| 1940 | * Traverse the freelist of dquots and attempt to reclaim a maximum of |
| 1941 | * 'howmany' dquots. This operation races with dqlookup(), and attempts to |
| 1942 | * favor the lookup function ... |
| 1943 | */ |
| 1944 | STATIC int |
| 1945 | xfs_qm_shake_freelist( |
| 1946 | int howmany) |
| 1947 | { |
| 1948 | int nreclaimed = 0; |
| 1949 | xfs_dquot_t *dqp; |
| 1950 | |
| 1951 | if (howmany <= 0) |
| 1952 | return 0; |
| 1953 | |
| 1954 | while (nreclaimed < howmany) { |
| 1955 | dqp = xfs_qm_dqreclaim_one(); |
| 1956 | if (!dqp) |
| 1957 | return nreclaimed; |
| 1958 | xfs_qm_dqdestroy(dqp); |
| 1959 | nreclaimed++; |
| 1960 | } |
| 1961 | return nreclaimed; |
| 1962 | } |
| 1963 | |
| 1964 | /* |
| 1965 | * The kmem_shake interface is invoked when memory is running low. |
| 1966 | */ |
| 1967 | /* ARGSUSED */ |
| 1968 | STATIC int |
Dave Chinner | 7f8275d | 2010-07-19 14:56:17 +1000 | [diff] [blame] | 1969 | xfs_qm_shake( |
| 1970 | struct shrinker *shrink, |
Ying Han | 1495f23 | 2011-05-24 17:12:27 -0700 | [diff] [blame] | 1971 | struct shrink_control *sc) |
Dave Chinner | 368e136 | 2010-04-13 15:06:50 +1000 | [diff] [blame] | 1972 | { |
| 1973 | int ndqused, nfree, n; |
Ying Han | 1495f23 | 2011-05-24 17:12:27 -0700 | [diff] [blame] | 1974 | gfp_t gfp_mask = sc->gfp_mask; |
Dave Chinner | 368e136 | 2010-04-13 15:06:50 +1000 | [diff] [blame] | 1975 | |
| 1976 | if (!kmem_shake_allow(gfp_mask)) |
| 1977 | return 0; |
| 1978 | if (!xfs_Gqm) |
| 1979 | return 0; |
| 1980 | |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 1981 | nfree = xfs_Gqm->qm_dqfrlist_cnt; /* free dquots */ |
Dave Chinner | 368e136 | 2010-04-13 15:06:50 +1000 | [diff] [blame] | 1982 | /* incore dquots in all f/s's */ |
| 1983 | ndqused = atomic_read(&xfs_Gqm->qm_totaldquots) - nfree; |
| 1984 | |
| 1985 | ASSERT(ndqused >= 0); |
| 1986 | |
| 1987 | if (nfree <= ndqused && nfree < ndquot) |
| 1988 | return 0; |
| 1989 | |
| 1990 | ndqused *= xfs_Gqm->qm_dqfree_ratio; /* target # of free dquots */ |
| 1991 | n = nfree - ndqused - ndquot; /* # over target */ |
| 1992 | |
| 1993 | return xfs_qm_shake_freelist(MAX(nfree, n)); |
| 1994 | } |
| 1995 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1996 | |
| 1997 | /*------------------------------------------------------------------*/ |
| 1998 | |
| 1999 | /* |
| 2000 | * Return a new incore dquot. Depending on the number of |
| 2001 | * dquots in the system, we either allocate a new one on the kernel heap, |
| 2002 | * or reclaim a free one. |
| 2003 | * Return value is B_TRUE if we allocated a new dquot, B_FALSE if we managed |
| 2004 | * to reclaim an existing one from the freelist. |
| 2005 | */ |
| 2006 | boolean_t |
| 2007 | xfs_qm_dqalloc_incore( |
| 2008 | xfs_dquot_t **O_dqpp) |
| 2009 | { |
| 2010 | xfs_dquot_t *dqp; |
| 2011 | |
| 2012 | /* |
| 2013 | * Check against high water mark to see if we want to pop |
| 2014 | * a nincompoop dquot off the freelist. |
| 2015 | */ |
| 2016 | if (atomic_read(&xfs_Gqm->qm_totaldquots) >= ndquot) { |
| 2017 | /* |
| 2018 | * Try to recycle a dquot from the freelist. |
| 2019 | */ |
| 2020 | if ((dqp = xfs_qm_dqreclaim_one())) { |
| 2021 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaims); |
| 2022 | /* |
| 2023 | * Just zero the core here. The rest will get |
| 2024 | * reinitialized by caller. XXX we shouldn't even |
| 2025 | * do this zero ... |
| 2026 | */ |
| 2027 | memset(&dqp->q_core, 0, sizeof(dqp->q_core)); |
| 2028 | *O_dqpp = dqp; |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 2029 | return B_FALSE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2030 | } |
| 2031 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaim_misses); |
| 2032 | } |
| 2033 | |
| 2034 | /* |
| 2035 | * Allocate a brand new dquot on the kernel heap and return it |
| 2036 | * to the caller to initialize. |
| 2037 | */ |
| 2038 | ASSERT(xfs_Gqm->qm_dqzone != NULL); |
| 2039 | *O_dqpp = kmem_zone_zalloc(xfs_Gqm->qm_dqzone, KM_SLEEP); |
| 2040 | atomic_inc(&xfs_Gqm->qm_totaldquots); |
| 2041 | |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 2042 | return B_TRUE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2043 | } |
| 2044 | |
| 2045 | |
| 2046 | /* |
| 2047 | * Start a transaction and write the incore superblock changes to |
| 2048 | * disk. flags parameter indicates which fields have changed. |
| 2049 | */ |
| 2050 | int |
| 2051 | xfs_qm_write_sb_changes( |
| 2052 | xfs_mount_t *mp, |
| 2053 | __int64_t flags) |
| 2054 | { |
| 2055 | xfs_trans_t *tp; |
| 2056 | int error; |
| 2057 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2058 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); |
| 2059 | if ((error = xfs_trans_reserve(tp, 0, |
| 2060 | mp->m_sb.sb_sectsize + 128, 0, |
| 2061 | 0, |
| 2062 | XFS_DEFAULT_LOG_COUNT))) { |
| 2063 | xfs_trans_cancel(tp, 0); |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 2064 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2065 | } |
| 2066 | |
| 2067 | xfs_mod_sb(tp, flags); |
David Chinner | e5720ee | 2008-04-10 12:21:18 +1000 | [diff] [blame] | 2068 | error = xfs_trans_commit(tp, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2069 | |
David Chinner | e5720ee | 2008-04-10 12:21:18 +1000 | [diff] [blame] | 2070 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2071 | } |
| 2072 | |
| 2073 | |
| 2074 | /* --------------- utility functions for vnodeops ---------------- */ |
| 2075 | |
| 2076 | |
| 2077 | /* |
Christoph Hellwig | 6c77b0e | 2010-10-06 18:41:17 +0000 | [diff] [blame] | 2078 | * Given an inode, a uid, gid and prid make sure that we have |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2079 | * allocated relevant dquot(s) on disk, and that we won't exceed inode |
| 2080 | * quotas by creating this file. |
| 2081 | * This also attaches dquot(s) to the given inode after locking it, |
| 2082 | * and returns the dquots corresponding to the uid and/or gid. |
| 2083 | * |
| 2084 | * in : inode (unlocked) |
| 2085 | * out : udquot, gdquot with references taken and unlocked |
| 2086 | */ |
| 2087 | int |
| 2088 | xfs_qm_vop_dqalloc( |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2089 | struct xfs_inode *ip, |
| 2090 | uid_t uid, |
| 2091 | gid_t gid, |
| 2092 | prid_t prid, |
| 2093 | uint flags, |
| 2094 | struct xfs_dquot **O_udqpp, |
| 2095 | struct xfs_dquot **O_gdqpp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2096 | { |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2097 | struct xfs_mount *mp = ip->i_mount; |
| 2098 | struct xfs_dquot *uq, *gq; |
| 2099 | int error; |
| 2100 | uint lockflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2101 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2102 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2103 | return 0; |
| 2104 | |
| 2105 | lockflags = XFS_ILOCK_EXCL; |
| 2106 | xfs_ilock(ip, lockflags); |
| 2107 | |
Christoph Hellwig | bd186aa | 2007-08-30 17:21:12 +1000 | [diff] [blame] | 2108 | if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2109 | gid = ip->i_d.di_gid; |
| 2110 | |
| 2111 | /* |
| 2112 | * Attach the dquot(s) to this inode, doing a dquot allocation |
| 2113 | * if necessary. The dquot(s) will not be locked. |
| 2114 | */ |
| 2115 | if (XFS_NOT_DQATTACHED(mp, ip)) { |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2116 | error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); |
| 2117 | if (error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2118 | xfs_iunlock(ip, lockflags); |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 2119 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2120 | } |
| 2121 | } |
| 2122 | |
| 2123 | uq = gq = NULL; |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 2124 | if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2125 | if (ip->i_d.di_uid != uid) { |
| 2126 | /* |
| 2127 | * What we need is the dquot that has this uid, and |
| 2128 | * if we send the inode to dqget, the uid of the inode |
| 2129 | * takes priority over what's sent in the uid argument. |
| 2130 | * We must unlock inode here before calling dqget if |
| 2131 | * we're not sending the inode, because otherwise |
| 2132 | * we'll deadlock by doing trans_reserve while |
| 2133 | * holding ilock. |
| 2134 | */ |
| 2135 | xfs_iunlock(ip, lockflags); |
| 2136 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t) uid, |
| 2137 | XFS_DQ_USER, |
| 2138 | XFS_QMOPT_DQALLOC | |
| 2139 | XFS_QMOPT_DOWARN, |
| 2140 | &uq))) { |
| 2141 | ASSERT(error != ENOENT); |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 2142 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2143 | } |
| 2144 | /* |
| 2145 | * Get the ilock in the right order. |
| 2146 | */ |
| 2147 | xfs_dqunlock(uq); |
| 2148 | lockflags = XFS_ILOCK_SHARED; |
| 2149 | xfs_ilock(ip, lockflags); |
| 2150 | } else { |
| 2151 | /* |
| 2152 | * Take an extra reference, because we'll return |
| 2153 | * this to caller |
| 2154 | */ |
| 2155 | ASSERT(ip->i_udquot); |
| 2156 | uq = ip->i_udquot; |
| 2157 | xfs_dqlock(uq); |
| 2158 | XFS_DQHOLD(uq); |
| 2159 | xfs_dqunlock(uq); |
| 2160 | } |
| 2161 | } |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 2162 | if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2163 | if (ip->i_d.di_gid != gid) { |
| 2164 | xfs_iunlock(ip, lockflags); |
| 2165 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)gid, |
| 2166 | XFS_DQ_GROUP, |
| 2167 | XFS_QMOPT_DQALLOC | |
| 2168 | XFS_QMOPT_DOWARN, |
| 2169 | &gq))) { |
| 2170 | if (uq) |
| 2171 | xfs_qm_dqrele(uq); |
| 2172 | ASSERT(error != ENOENT); |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 2173 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2174 | } |
| 2175 | xfs_dqunlock(gq); |
| 2176 | lockflags = XFS_ILOCK_SHARED; |
| 2177 | xfs_ilock(ip, lockflags); |
| 2178 | } else { |
| 2179 | ASSERT(ip->i_gdquot); |
| 2180 | gq = ip->i_gdquot; |
| 2181 | xfs_dqlock(gq); |
| 2182 | XFS_DQHOLD(gq); |
| 2183 | xfs_dqunlock(gq); |
| 2184 | } |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 2185 | } else if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { |
Arkadiusz Mi?kiewicz | 6743099 | 2010-09-26 06:10:18 +0000 | [diff] [blame] | 2186 | if (xfs_get_projid(ip) != prid) { |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 2187 | xfs_iunlock(ip, lockflags); |
| 2188 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, |
| 2189 | XFS_DQ_PROJ, |
| 2190 | XFS_QMOPT_DQALLOC | |
| 2191 | XFS_QMOPT_DOWARN, |
| 2192 | &gq))) { |
| 2193 | if (uq) |
| 2194 | xfs_qm_dqrele(uq); |
| 2195 | ASSERT(error != ENOENT); |
| 2196 | return (error); |
| 2197 | } |
| 2198 | xfs_dqunlock(gq); |
| 2199 | lockflags = XFS_ILOCK_SHARED; |
| 2200 | xfs_ilock(ip, lockflags); |
| 2201 | } else { |
| 2202 | ASSERT(ip->i_gdquot); |
| 2203 | gq = ip->i_gdquot; |
| 2204 | xfs_dqlock(gq); |
| 2205 | XFS_DQHOLD(gq); |
| 2206 | xfs_dqunlock(gq); |
| 2207 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2208 | } |
| 2209 | if (uq) |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 2210 | trace_xfs_dquot_dqalloc(ip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2211 | |
| 2212 | xfs_iunlock(ip, lockflags); |
| 2213 | if (O_udqpp) |
| 2214 | *O_udqpp = uq; |
| 2215 | else if (uq) |
| 2216 | xfs_qm_dqrele(uq); |
| 2217 | if (O_gdqpp) |
| 2218 | *O_gdqpp = gq; |
| 2219 | else if (gq) |
| 2220 | xfs_qm_dqrele(gq); |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 2221 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2222 | } |
| 2223 | |
| 2224 | /* |
| 2225 | * Actually transfer ownership, and do dquot modifications. |
| 2226 | * These were already reserved. |
| 2227 | */ |
| 2228 | xfs_dquot_t * |
| 2229 | xfs_qm_vop_chown( |
| 2230 | xfs_trans_t *tp, |
| 2231 | xfs_inode_t *ip, |
| 2232 | xfs_dquot_t **IO_olddq, |
| 2233 | xfs_dquot_t *newdq) |
| 2234 | { |
| 2235 | xfs_dquot_t *prevdq; |
Nathan Scott | 06d10dd | 2005-06-21 15:48:47 +1000 | [diff] [blame] | 2236 | uint bfield = XFS_IS_REALTIME_INODE(ip) ? |
| 2237 | XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; |
| 2238 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2239 | |
Christoph Hellwig | 579aa9c | 2008-04-22 17:34:00 +1000 | [diff] [blame] | 2240 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2241 | ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); |
| 2242 | |
| 2243 | /* old dquot */ |
| 2244 | prevdq = *IO_olddq; |
| 2245 | ASSERT(prevdq); |
| 2246 | ASSERT(prevdq != newdq); |
| 2247 | |
Nathan Scott | 06d10dd | 2005-06-21 15:48:47 +1000 | [diff] [blame] | 2248 | xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); |
| 2249 | xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2250 | |
| 2251 | /* the sparkling new dquot */ |
Nathan Scott | 06d10dd | 2005-06-21 15:48:47 +1000 | [diff] [blame] | 2252 | xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); |
| 2253 | xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2254 | |
| 2255 | /* |
| 2256 | * Take an extra reference, because the inode |
| 2257 | * is going to keep this dquot pointer even |
| 2258 | * after the trans_commit. |
| 2259 | */ |
| 2260 | xfs_dqlock(newdq); |
| 2261 | XFS_DQHOLD(newdq); |
| 2262 | xfs_dqunlock(newdq); |
| 2263 | *IO_olddq = newdq; |
| 2264 | |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 2265 | return prevdq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2266 | } |
| 2267 | |
| 2268 | /* |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 2269 | * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2270 | */ |
| 2271 | int |
| 2272 | xfs_qm_vop_chown_reserve( |
| 2273 | xfs_trans_t *tp, |
| 2274 | xfs_inode_t *ip, |
| 2275 | xfs_dquot_t *udqp, |
| 2276 | xfs_dquot_t *gdqp, |
| 2277 | uint flags) |
| 2278 | { |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2279 | xfs_mount_t *mp = ip->i_mount; |
Nathan Scott | 9a2a7de | 2006-03-31 13:04:49 +1000 | [diff] [blame] | 2280 | uint delblks, blkflags, prjflags = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2281 | xfs_dquot_t *unresudq, *unresgdq, *delblksudq, *delblksgdq; |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2282 | int error; |
| 2283 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2284 | |
Christoph Hellwig | 579aa9c | 2008-04-22 17:34:00 +1000 | [diff] [blame] | 2285 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2286 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
| 2287 | |
| 2288 | delblks = ip->i_delayed_blks; |
| 2289 | delblksudq = delblksgdq = unresudq = unresgdq = NULL; |
Nathan Scott | 06d10dd | 2005-06-21 15:48:47 +1000 | [diff] [blame] | 2290 | blkflags = XFS_IS_REALTIME_INODE(ip) ? |
| 2291 | XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2292 | |
| 2293 | if (XFS_IS_UQUOTA_ON(mp) && udqp && |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 2294 | ip->i_d.di_uid != (uid_t)be32_to_cpu(udqp->q_core.d_id)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2295 | delblksudq = udqp; |
| 2296 | /* |
| 2297 | * If there are delayed allocation blocks, then we have to |
| 2298 | * unreserve those from the old dquot, and add them to the |
| 2299 | * new dquot. |
| 2300 | */ |
| 2301 | if (delblks) { |
| 2302 | ASSERT(ip->i_udquot); |
| 2303 | unresudq = ip->i_udquot; |
| 2304 | } |
| 2305 | } |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 2306 | if (XFS_IS_OQUOTA_ON(ip->i_mount) && gdqp) { |
Nathan Scott | 9a2a7de | 2006-03-31 13:04:49 +1000 | [diff] [blame] | 2307 | if (XFS_IS_PQUOTA_ON(ip->i_mount) && |
Arkadiusz Mi?kiewicz | 6743099 | 2010-09-26 06:10:18 +0000 | [diff] [blame] | 2308 | xfs_get_projid(ip) != be32_to_cpu(gdqp->q_core.d_id)) |
Nathan Scott | 9a2a7de | 2006-03-31 13:04:49 +1000 | [diff] [blame] | 2309 | prjflags = XFS_QMOPT_ENOSPC; |
| 2310 | |
| 2311 | if (prjflags || |
| 2312 | (XFS_IS_GQUOTA_ON(ip->i_mount) && |
| 2313 | ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id))) { |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 2314 | delblksgdq = gdqp; |
| 2315 | if (delblks) { |
| 2316 | ASSERT(ip->i_gdquot); |
| 2317 | unresgdq = ip->i_gdquot; |
| 2318 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2319 | } |
| 2320 | } |
| 2321 | |
| 2322 | if ((error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, |
| 2323 | delblksudq, delblksgdq, ip->i_d.di_nblocks, 1, |
Nathan Scott | 9a2a7de | 2006-03-31 13:04:49 +1000 | [diff] [blame] | 2324 | flags | blkflags | prjflags))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2325 | return (error); |
| 2326 | |
| 2327 | /* |
| 2328 | * Do the delayed blks reservations/unreservations now. Since, these |
| 2329 | * are done without the help of a transaction, if a reservation fails |
| 2330 | * its previous reservations won't be automatically undone by trans |
| 2331 | * code. So, we have to do it manually here. |
| 2332 | */ |
| 2333 | if (delblks) { |
| 2334 | /* |
| 2335 | * Do the reservations first. Unreservation can't fail. |
| 2336 | */ |
| 2337 | ASSERT(delblksudq || delblksgdq); |
| 2338 | ASSERT(unresudq || unresgdq); |
| 2339 | if ((error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, |
| 2340 | delblksudq, delblksgdq, (xfs_qcnt_t)delblks, 0, |
Nathan Scott | 9a2a7de | 2006-03-31 13:04:49 +1000 | [diff] [blame] | 2341 | flags | blkflags | prjflags))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2342 | return (error); |
| 2343 | xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, |
| 2344 | unresudq, unresgdq, -((xfs_qcnt_t)delblks), 0, |
Nathan Scott | 06d10dd | 2005-06-21 15:48:47 +1000 | [diff] [blame] | 2345 | blkflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2346 | } |
| 2347 | |
| 2348 | return (0); |
| 2349 | } |
| 2350 | |
| 2351 | int |
| 2352 | xfs_qm_vop_rename_dqattach( |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2353 | struct xfs_inode **i_tab) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2354 | { |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2355 | struct xfs_mount *mp = i_tab[0]->i_mount; |
| 2356 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2357 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2358 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 2359 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2360 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2361 | for (i = 0; (i < 4 && i_tab[i]); i++) { |
| 2362 | struct xfs_inode *ip = i_tab[i]; |
| 2363 | int error; |
| 2364 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2365 | /* |
| 2366 | * Watch out for duplicate entries in the table. |
| 2367 | */ |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2368 | if (i == 0 || ip != i_tab[i-1]) { |
| 2369 | if (XFS_NOT_DQATTACHED(mp, ip)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2370 | error = xfs_qm_dqattach(ip, 0); |
| 2371 | if (error) |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 2372 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2373 | } |
| 2374 | } |
| 2375 | } |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 2376 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2377 | } |
| 2378 | |
| 2379 | void |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2380 | xfs_qm_vop_create_dqattach( |
| 2381 | struct xfs_trans *tp, |
| 2382 | struct xfs_inode *ip, |
| 2383 | struct xfs_dquot *udqp, |
| 2384 | struct xfs_dquot *gdqp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2385 | { |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2386 | struct xfs_mount *mp = tp->t_mountp; |
| 2387 | |
| 2388 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2389 | return; |
| 2390 | |
Christoph Hellwig | 579aa9c | 2008-04-22 17:34:00 +1000 | [diff] [blame] | 2391 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2392 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2393 | |
| 2394 | if (udqp) { |
| 2395 | xfs_dqlock(udqp); |
| 2396 | XFS_DQHOLD(udqp); |
| 2397 | xfs_dqunlock(udqp); |
| 2398 | ASSERT(ip->i_udquot == NULL); |
| 2399 | ip->i_udquot = udqp; |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2400 | ASSERT(XFS_IS_UQUOTA_ON(mp)); |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 2401 | ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2402 | xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); |
| 2403 | } |
| 2404 | if (gdqp) { |
| 2405 | xfs_dqlock(gdqp); |
| 2406 | XFS_DQHOLD(gdqp); |
| 2407 | xfs_dqunlock(gdqp); |
| 2408 | ASSERT(ip->i_gdquot == NULL); |
| 2409 | ip->i_gdquot = gdqp; |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2410 | ASSERT(XFS_IS_OQUOTA_ON(mp)); |
| 2411 | ASSERT((XFS_IS_GQUOTA_ON(mp) ? |
Arkadiusz Mi?kiewicz | 6743099 | 2010-09-26 06:10:18 +0000 | [diff] [blame] | 2412 | ip->i_d.di_gid : xfs_get_projid(ip)) == |
Nathan Scott | ee2a4f7 | 2006-01-11 15:33:36 +1100 | [diff] [blame] | 2413 | be32_to_cpu(gdqp->q_core.d_id)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2414 | xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); |
| 2415 | } |
| 2416 | } |
| 2417 | |