Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Andrew Morton | 8984d13 | 2006-12-06 20:37:15 -0800 | [diff] [blame] | 2 | /* |
| 3 | * Interface between ext4 and JBD |
| 4 | */ |
| 5 | |
Christoph Hellwig | 3dcf545 | 2008-04-29 18:13:32 -0400 | [diff] [blame] | 6 | #include "ext4_jbd2.h" |
Andrew Morton | 8984d13 | 2006-12-06 20:37:15 -0800 | [diff] [blame] | 7 | |
Theodore Ts'o | d6797d1 | 2009-11-22 20:52:12 -0500 | [diff] [blame] | 8 | #include <trace/events/ext4.h> |
| 9 | |
Eric Biggers | 46797ad | 2019-12-09 15:36:02 -0800 | [diff] [blame] | 10 | int ext4_inode_journal_mode(struct inode *inode) |
| 11 | { |
| 12 | if (EXT4_JOURNAL(inode) == NULL) |
| 13 | return EXT4_INODE_WRITEBACK_DATA_MODE; /* writeback */ |
| 14 | /* We do not support data journalling with delayed allocation */ |
| 15 | if (!S_ISREG(inode->i_mode) || |
| 16 | ext4_test_inode_flag(inode, EXT4_INODE_EA_INODE) || |
| 17 | test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA || |
| 18 | (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA) && |
| 19 | !test_opt(inode->i_sb, DELALLOC))) { |
| 20 | /* We do not support data journalling for encrypted data */ |
| 21 | if (S_ISREG(inode->i_mode) && IS_ENCRYPTED(inode)) |
| 22 | return EXT4_INODE_ORDERED_DATA_MODE; /* ordered */ |
| 23 | return EXT4_INODE_JOURNAL_DATA_MODE; /* journal data */ |
| 24 | } |
| 25 | if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA) |
| 26 | return EXT4_INODE_ORDERED_DATA_MODE; /* ordered */ |
| 27 | if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA) |
| 28 | return EXT4_INODE_WRITEBACK_DATA_MODE; /* writeback */ |
| 29 | BUG(); |
| 30 | } |
| 31 | |
Theodore Ts'o | 722887d | 2013-02-08 13:00:31 -0500 | [diff] [blame] | 32 | /* Just increment the non-pointer handle value */ |
| 33 | static handle_t *ext4_get_nojournal(void) |
| 34 | { |
| 35 | handle_t *handle = current->journal_info; |
| 36 | unsigned long ref_cnt = (unsigned long)handle; |
| 37 | |
| 38 | BUG_ON(ref_cnt >= EXT4_NOJOURNAL_MAX_REF_COUNT); |
| 39 | |
| 40 | ref_cnt++; |
| 41 | handle = (handle_t *)ref_cnt; |
| 42 | |
| 43 | current->journal_info = handle; |
| 44 | return handle; |
| 45 | } |
| 46 | |
| 47 | |
| 48 | /* Decrement the non-pointer handle value */ |
| 49 | static void ext4_put_nojournal(handle_t *handle) |
| 50 | { |
| 51 | unsigned long ref_cnt = (unsigned long)handle; |
| 52 | |
| 53 | BUG_ON(ref_cnt == 0); |
| 54 | |
| 55 | ref_cnt--; |
| 56 | handle = (handle_t *)ref_cnt; |
| 57 | |
| 58 | current->journal_info = handle; |
| 59 | } |
| 60 | |
| 61 | /* |
| 62 | * Wrappers for jbd2_journal_start/end. |
| 63 | */ |
Jan Kara | 5fe2fe8 | 2013-06-04 12:37:50 -0400 | [diff] [blame] | 64 | static int ext4_journal_check_start(struct super_block *sb) |
Theodore Ts'o | 722887d | 2013-02-08 13:00:31 -0500 | [diff] [blame] | 65 | { |
| 66 | journal_t *journal; |
| 67 | |
Theodore Ts'o | b10a44c | 2013-04-03 22:00:52 -0400 | [diff] [blame] | 68 | might_sleep(); |
Theodore Ts'o | 0db1ff2 | 2017-02-05 01:28:48 -0500 | [diff] [blame] | 69 | |
Jan Kara | eb8ab44 | 2023-06-16 18:50:49 +0200 | [diff] [blame] | 70 | if (unlikely(ext4_forced_shutdown(sb))) |
Theodore Ts'o | 0db1ff2 | 2017-02-05 01:28:48 -0500 | [diff] [blame] | 71 | return -EIO; |
| 72 | |
Jan Kara | e7fc2b3 | 2023-06-16 18:50:53 +0200 | [diff] [blame] | 73 | if (WARN_ON_ONCE(sb_rdonly(sb))) |
Jan Kara | 5fe2fe8 | 2013-06-04 12:37:50 -0400 | [diff] [blame] | 74 | return -EROFS; |
Jan Kara | e7fc2b3 | 2023-06-16 18:50:53 +0200 | [diff] [blame] | 75 | |
Theodore Ts'o | 722887d | 2013-02-08 13:00:31 -0500 | [diff] [blame] | 76 | WARN_ON(sb->s_writers.frozen == SB_FREEZE_COMPLETE); |
| 77 | journal = EXT4_SB(sb)->s_journal; |
Theodore Ts'o | 722887d | 2013-02-08 13:00:31 -0500 | [diff] [blame] | 78 | /* |
| 79 | * Special case here: if the journal has aborted behind our |
| 80 | * backs (eg. EIO in the commit thread), then we still need to |
| 81 | * take the FS itself readonly cleanly. |
| 82 | */ |
Jan Kara | 5fe2fe8 | 2013-06-04 12:37:50 -0400 | [diff] [blame] | 83 | if (journal && is_journal_aborted(journal)) { |
Theodore Ts'o | 54d3adb | 2020-03-28 19:33:43 -0400 | [diff] [blame] | 84 | ext4_abort(sb, -journal->j_errno, "Detected aborted journal"); |
Jan Kara | 5fe2fe8 | 2013-06-04 12:37:50 -0400 | [diff] [blame] | 85 | return -EROFS; |
Theodore Ts'o | 722887d | 2013-02-08 13:00:31 -0500 | [diff] [blame] | 86 | } |
Jan Kara | 5fe2fe8 | 2013-06-04 12:37:50 -0400 | [diff] [blame] | 87 | return 0; |
| 88 | } |
| 89 | |
changfengnan | 5f3e240 | 2022-10-08 20:05:18 +0800 | [diff] [blame] | 90 | handle_t *__ext4_journal_start_sb(struct inode *inode, |
| 91 | struct super_block *sb, unsigned int line, |
Jan Kara | 83448bd | 2019-11-05 17:44:29 +0100 | [diff] [blame] | 92 | int type, int blocks, int rsv_blocks, |
| 93 | int revoke_creds) |
Jan Kara | 5fe2fe8 | 2013-06-04 12:37:50 -0400 | [diff] [blame] | 94 | { |
| 95 | journal_t *journal; |
| 96 | int err; |
changfengnan | 5f3e240 | 2022-10-08 20:05:18 +0800 | [diff] [blame] | 97 | if (inode) |
| 98 | trace_ext4_journal_start_inode(inode, blocks, rsv_blocks, |
| 99 | revoke_creds, type, |
| 100 | _RET_IP_); |
| 101 | else |
| 102 | trace_ext4_journal_start_sb(sb, blocks, rsv_blocks, |
| 103 | revoke_creds, type, |
| 104 | _RET_IP_); |
Jan Kara | 5fe2fe8 | 2013-06-04 12:37:50 -0400 | [diff] [blame] | 105 | err = ext4_journal_check_start(sb); |
| 106 | if (err < 0) |
| 107 | return ERR_PTR(err); |
| 108 | |
| 109 | journal = EXT4_SB(sb)->s_journal; |
Harshad Shirwadkar | 8016e29 | 2020-10-15 13:37:59 -0700 | [diff] [blame] | 110 | if (!journal || (EXT4_SB(sb)->s_mount_state & EXT4_FC_REPLAY)) |
Jan Kara | 5fe2fe8 | 2013-06-04 12:37:50 -0400 | [diff] [blame] | 111 | return ext4_get_nojournal(); |
Jan Kara | 83448bd | 2019-11-05 17:44:29 +0100 | [diff] [blame] | 112 | return jbd2__journal_start(journal, blocks, rsv_blocks, revoke_creds, |
| 113 | GFP_NOFS, type, line); |
Theodore Ts'o | 722887d | 2013-02-08 13:00:31 -0500 | [diff] [blame] | 114 | } |
| 115 | |
| 116 | int __ext4_journal_stop(const char *where, unsigned int line, handle_t *handle) |
| 117 | { |
| 118 | struct super_block *sb; |
| 119 | int err; |
| 120 | int rc; |
| 121 | |
| 122 | if (!ext4_handle_valid(handle)) { |
| 123 | ext4_put_nojournal(handle); |
| 124 | return 0; |
| 125 | } |
Lukas Czerner | 9d50659 | 2015-05-14 18:55:18 -0400 | [diff] [blame] | 126 | |
Lukas Czerner | 6934da9 | 2015-10-17 22:57:06 -0400 | [diff] [blame] | 127 | err = handle->h_err; |
Lukas Czerner | 9d50659 | 2015-05-14 18:55:18 -0400 | [diff] [blame] | 128 | if (!handle->h_transaction) { |
Lukas Czerner | 6934da9 | 2015-10-17 22:57:06 -0400 | [diff] [blame] | 129 | rc = jbd2_journal_stop(handle); |
| 130 | return err ? err : rc; |
Lukas Czerner | 9d50659 | 2015-05-14 18:55:18 -0400 | [diff] [blame] | 131 | } |
| 132 | |
Theodore Ts'o | 722887d | 2013-02-08 13:00:31 -0500 | [diff] [blame] | 133 | sb = handle->h_transaction->t_journal->j_private; |
Theodore Ts'o | 722887d | 2013-02-08 13:00:31 -0500 | [diff] [blame] | 134 | rc = jbd2_journal_stop(handle); |
| 135 | |
| 136 | if (!err) |
| 137 | err = rc; |
| 138 | if (err) |
| 139 | __ext4_std_error(sb, where, line, err); |
| 140 | return err; |
| 141 | } |
| 142 | |
Jan Kara | 5fe2fe8 | 2013-06-04 12:37:50 -0400 | [diff] [blame] | 143 | handle_t *__ext4_journal_start_reserved(handle_t *handle, unsigned int line, |
| 144 | int type) |
| 145 | { |
| 146 | struct super_block *sb; |
| 147 | int err; |
| 148 | |
| 149 | if (!ext4_handle_valid(handle)) |
| 150 | return ext4_get_nojournal(); |
| 151 | |
| 152 | sb = handle->h_journal->j_private; |
Jan Kara | a9a8344 | 2019-11-05 17:44:17 +0100 | [diff] [blame] | 153 | trace_ext4_journal_start_reserved(sb, |
| 154 | jbd2_handle_buffer_credits(handle), _RET_IP_); |
Jan Kara | 5fe2fe8 | 2013-06-04 12:37:50 -0400 | [diff] [blame] | 155 | err = ext4_journal_check_start(sb); |
| 156 | if (err < 0) { |
| 157 | jbd2_journal_free_reserved(handle); |
| 158 | return ERR_PTR(err); |
| 159 | } |
| 160 | |
| 161 | err = jbd2_journal_start_reserved(handle, type, line); |
| 162 | if (err < 0) |
| 163 | return ERR_PTR(err); |
| 164 | return handle; |
| 165 | } |
| 166 | |
Jan Kara | a413036 | 2019-11-05 17:44:16 +0100 | [diff] [blame] | 167 | int __ext4_journal_ensure_credits(handle_t *handle, int check_cred, |
Jan Kara | 83448bd | 2019-11-05 17:44:29 +0100 | [diff] [blame] | 168 | int extend_cred, int revoke_cred) |
Jan Kara | a413036 | 2019-11-05 17:44:16 +0100 | [diff] [blame] | 169 | { |
| 170 | if (!ext4_handle_valid(handle)) |
| 171 | return 0; |
Ye Bin | 298b5c5 | 2021-12-24 18:03:41 +0800 | [diff] [blame] | 172 | if (is_handle_aborted(handle)) |
| 173 | return -EROFS; |
Jan Kara | 83448bd | 2019-11-05 17:44:29 +0100 | [diff] [blame] | 174 | if (jbd2_handle_buffer_credits(handle) >= check_cred && |
| 175 | handle->h_revoke_credits >= revoke_cred) |
Jan Kara | a413036 | 2019-11-05 17:44:16 +0100 | [diff] [blame] | 176 | return 0; |
Jan Kara | 83448bd | 2019-11-05 17:44:29 +0100 | [diff] [blame] | 177 | extend_cred = max(0, extend_cred - jbd2_handle_buffer_credits(handle)); |
| 178 | revoke_cred = max(0, revoke_cred - handle->h_revoke_credits); |
| 179 | return ext4_journal_extend(handle, extend_cred, revoke_cred); |
Jan Kara | a413036 | 2019-11-05 17:44:16 +0100 | [diff] [blame] | 180 | } |
| 181 | |
Stephen Hemminger | c197855 | 2014-05-12 10:50:23 -0400 | [diff] [blame] | 182 | static void ext4_journal_abort_handle(const char *caller, unsigned int line, |
| 183 | const char *err_fn, |
| 184 | struct buffer_head *bh, |
| 185 | handle_t *handle, int err) |
Theodore Ts'o | 722887d | 2013-02-08 13:00:31 -0500 | [diff] [blame] | 186 | { |
| 187 | char nbuf[16]; |
| 188 | const char *errstr = ext4_decode_error(NULL, err, nbuf); |
| 189 | |
| 190 | BUG_ON(!ext4_handle_valid(handle)); |
| 191 | |
| 192 | if (bh) |
| 193 | BUFFER_TRACE(bh, "abort"); |
| 194 | |
| 195 | if (!handle->h_err) |
| 196 | handle->h_err = err; |
| 197 | |
| 198 | if (is_handle_aborted(handle)) |
| 199 | return; |
| 200 | |
| 201 | printk(KERN_ERR "EXT4-fs: %s:%d: aborting transaction: %s in %s\n", |
| 202 | caller, line, errstr, err_fn); |
| 203 | |
| 204 | jbd2_journal_abort_handle(handle); |
| 205 | } |
| 206 | |
zhangyi (F) | bc71726 | 2020-06-20 10:54:23 +0800 | [diff] [blame] | 207 | static void ext4_check_bdev_write_error(struct super_block *sb) |
| 208 | { |
Al Viro | 224941e | 2024-04-11 15:53:37 +0100 | [diff] [blame] | 209 | struct address_space *mapping = sb->s_bdev->bd_mapping; |
zhangyi (F) | bc71726 | 2020-06-20 10:54:23 +0800 | [diff] [blame] | 210 | struct ext4_sb_info *sbi = EXT4_SB(sb); |
| 211 | int err; |
| 212 | |
| 213 | /* |
| 214 | * If the block device has write error flag, it may have failed to |
| 215 | * async write out metadata buffers in the background. In this case, |
| 216 | * we could read old data from disk and write it out again, which |
| 217 | * may lead to on-disk filesystem inconsistency. |
| 218 | */ |
| 219 | if (errseq_check(&mapping->wb_err, READ_ONCE(sbi->s_bdev_wb_err))) { |
| 220 | spin_lock(&sbi->s_bdev_wb_lock); |
| 221 | err = errseq_check_and_advance(&mapping->wb_err, &sbi->s_bdev_wb_err); |
| 222 | spin_unlock(&sbi->s_bdev_wb_lock); |
| 223 | if (err) |
| 224 | ext4_error_err(sb, -err, |
| 225 | "Error while async write back metadata"); |
| 226 | } |
| 227 | } |
| 228 | |
Theodore Ts'o | 90c7201 | 2010-06-29 14:53:24 -0400 | [diff] [blame] | 229 | int __ext4_journal_get_write_access(const char *where, unsigned int line, |
Jan Kara | 188c299 | 2021-08-16 11:57:04 +0200 | [diff] [blame] | 230 | handle_t *handle, struct super_block *sb, |
| 231 | struct buffer_head *bh, |
| 232 | enum ext4_journal_trigger_type trigger_type) |
Andrew Morton | 8984d13 | 2006-12-06 20:37:15 -0800 | [diff] [blame] | 233 | { |
Jan Kara | 188c299 | 2021-08-16 11:57:04 +0200 | [diff] [blame] | 234 | int err; |
Frank Mayhar | 0390131 | 2009-01-07 00:06:22 -0500 | [diff] [blame] | 235 | |
Theodore Ts'o | b10a44c | 2013-04-03 22:00:52 -0400 | [diff] [blame] | 236 | might_sleep(); |
| 237 | |
Frank Mayhar | 0390131 | 2009-01-07 00:06:22 -0500 | [diff] [blame] | 238 | if (ext4_handle_valid(handle)) { |
| 239 | err = jbd2_journal_get_write_access(handle, bh); |
Jan Kara | 188c299 | 2021-08-16 11:57:04 +0200 | [diff] [blame] | 240 | if (err) { |
Theodore Ts'o | 90c7201 | 2010-06-29 14:53:24 -0400 | [diff] [blame] | 241 | ext4_journal_abort_handle(where, line, __func__, bh, |
Frank Mayhar | 0390131 | 2009-01-07 00:06:22 -0500 | [diff] [blame] | 242 | handle, err); |
Jan Kara | 188c299 | 2021-08-16 11:57:04 +0200 | [diff] [blame] | 243 | return err; |
| 244 | } |
Zhihao Cheng | ada3fb8 | 2023-12-13 09:32:24 +0800 | [diff] [blame] | 245 | } else |
| 246 | ext4_check_bdev_write_error(sb); |
Jan Kara | 188c299 | 2021-08-16 11:57:04 +0200 | [diff] [blame] | 247 | if (trigger_type == EXT4_JTR_NONE || !ext4_has_metadata_csum(sb)) |
| 248 | return 0; |
| 249 | BUG_ON(trigger_type >= EXT4_JOURNAL_TRIGGER_COUNT); |
| 250 | jbd2_journal_set_triggers(bh, |
| 251 | &EXT4_SB(sb)->s_journal_triggers[trigger_type].tr_triggers); |
| 252 | return 0; |
Andrew Morton | 8984d13 | 2006-12-06 20:37:15 -0800 | [diff] [blame] | 253 | } |
| 254 | |
Theodore Ts'o | d6797d1 | 2009-11-22 20:52:12 -0500 | [diff] [blame] | 255 | /* |
| 256 | * The ext4 forget function must perform a revoke if we are freeing data |
| 257 | * which has been journaled. Metadata (eg. indirect blocks) must be |
| 258 | * revoked in all cases. |
| 259 | * |
| 260 | * "bh" may be NULL: a metadata block may have been freed from memory |
| 261 | * but there may still be a record of it in the journal, and that record |
| 262 | * still needs to be revoked. |
Theodore Ts'o | d6797d1 | 2009-11-22 20:52:12 -0500 | [diff] [blame] | 263 | */ |
Theodore Ts'o | 90c7201 | 2010-06-29 14:53:24 -0400 | [diff] [blame] | 264 | int __ext4_forget(const char *where, unsigned int line, handle_t *handle, |
| 265 | int is_metadata, struct inode *inode, |
| 266 | struct buffer_head *bh, ext4_fsblk_t blocknr) |
Theodore Ts'o | d6797d1 | 2009-11-22 20:52:12 -0500 | [diff] [blame] | 267 | { |
| 268 | int err; |
| 269 | |
| 270 | might_sleep(); |
| 271 | |
| 272 | trace_ext4_forget(inode, is_metadata, blocknr); |
| 273 | BUFFER_TRACE(bh, "enter"); |
| 274 | |
Jan Kara | 4978c65 | 2022-06-08 13:23:47 +0200 | [diff] [blame] | 275 | ext4_debug("forgetting bh %p: is_metadata=%d, mode %o, data mode %x\n", |
Theodore Ts'o | d6797d1 | 2009-11-22 20:52:12 -0500 | [diff] [blame] | 276 | bh, is_metadata, inode->i_mode, |
| 277 | test_opt(inode->i_sb, DATA_FLAGS)); |
| 278 | |
Theodore Ts'o | e4684b3 | 2009-11-24 11:05:59 -0500 | [diff] [blame] | 279 | /* In the no journal case, we can just do a bforget and return */ |
| 280 | if (!ext4_handle_valid(handle)) { |
| 281 | bforget(bh); |
| 282 | return 0; |
| 283 | } |
| 284 | |
Theodore Ts'o | d6797d1 | 2009-11-22 20:52:12 -0500 | [diff] [blame] | 285 | /* Never use the revoke function if we are doing full data |
| 286 | * journaling: there is no need to, and a V1 superblock won't |
| 287 | * support it. Otherwise, only skip the revoke on un-journaled |
| 288 | * data blocks. */ |
| 289 | |
| 290 | if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA || |
| 291 | (!is_metadata && !ext4_should_journal_data(inode))) { |
| 292 | if (bh) { |
| 293 | BUFFER_TRACE(bh, "call jbd2_journal_forget"); |
Theodore Ts'o | b7e57e7 | 2009-11-22 21:00:13 -0500 | [diff] [blame] | 294 | err = jbd2_journal_forget(handle, bh); |
| 295 | if (err) |
Theodore Ts'o | 90c7201 | 2010-06-29 14:53:24 -0400 | [diff] [blame] | 296 | ext4_journal_abort_handle(where, line, __func__, |
| 297 | bh, handle, err); |
Theodore Ts'o | b7e57e7 | 2009-11-22 21:00:13 -0500 | [diff] [blame] | 298 | return err; |
Theodore Ts'o | d6797d1 | 2009-11-22 20:52:12 -0500 | [diff] [blame] | 299 | } |
| 300 | return 0; |
| 301 | } |
| 302 | |
| 303 | /* |
| 304 | * data!=journal && (is_metadata || should_journal_data(inode)) |
| 305 | */ |
Theodore Ts'o | e4684b3 | 2009-11-24 11:05:59 -0500 | [diff] [blame] | 306 | BUFFER_TRACE(bh, "call jbd2_journal_revoke"); |
| 307 | err = jbd2_journal_revoke(handle, blocknr, bh); |
| 308 | if (err) { |
Theodore Ts'o | 90c7201 | 2010-06-29 14:53:24 -0400 | [diff] [blame] | 309 | ext4_journal_abort_handle(where, line, __func__, |
| 310 | bh, handle, err); |
Jan Kara | 014c9ca | 2020-11-27 12:33:57 +0100 | [diff] [blame] | 311 | __ext4_error(inode->i_sb, where, line, true, -err, 0, |
| 312 | "error %d when attempting revoke", err); |
Theodore Ts'o | e4684b3 | 2009-11-24 11:05:59 -0500 | [diff] [blame] | 313 | } |
Theodore Ts'o | d6797d1 | 2009-11-22 20:52:12 -0500 | [diff] [blame] | 314 | BUFFER_TRACE(bh, "exit"); |
| 315 | return err; |
| 316 | } |
| 317 | |
Theodore Ts'o | 90c7201 | 2010-06-29 14:53:24 -0400 | [diff] [blame] | 318 | int __ext4_journal_get_create_access(const char *where, unsigned int line, |
Jan Kara | 188c299 | 2021-08-16 11:57:04 +0200 | [diff] [blame] | 319 | handle_t *handle, struct super_block *sb, |
| 320 | struct buffer_head *bh, |
| 321 | enum ext4_journal_trigger_type trigger_type) |
Andrew Morton | 8984d13 | 2006-12-06 20:37:15 -0800 | [diff] [blame] | 322 | { |
Jan Kara | 188c299 | 2021-08-16 11:57:04 +0200 | [diff] [blame] | 323 | int err; |
Frank Mayhar | 0390131 | 2009-01-07 00:06:22 -0500 | [diff] [blame] | 324 | |
Jan Kara | 188c299 | 2021-08-16 11:57:04 +0200 | [diff] [blame] | 325 | if (!ext4_handle_valid(handle)) |
| 326 | return 0; |
| 327 | |
| 328 | err = jbd2_journal_get_create_access(handle, bh); |
| 329 | if (err) { |
| 330 | ext4_journal_abort_handle(where, line, __func__, bh, handle, |
| 331 | err); |
| 332 | return err; |
Frank Mayhar | 0390131 | 2009-01-07 00:06:22 -0500 | [diff] [blame] | 333 | } |
Jan Kara | 188c299 | 2021-08-16 11:57:04 +0200 | [diff] [blame] | 334 | if (trigger_type == EXT4_JTR_NONE || !ext4_has_metadata_csum(sb)) |
| 335 | return 0; |
| 336 | BUG_ON(trigger_type >= EXT4_JOURNAL_TRIGGER_COUNT); |
| 337 | jbd2_journal_set_triggers(bh, |
| 338 | &EXT4_SB(sb)->s_journal_triggers[trigger_type].tr_triggers); |
| 339 | return 0; |
Andrew Morton | 8984d13 | 2006-12-06 20:37:15 -0800 | [diff] [blame] | 340 | } |
| 341 | |
Theodore Ts'o | 90c7201 | 2010-06-29 14:53:24 -0400 | [diff] [blame] | 342 | int __ext4_handle_dirty_metadata(const char *where, unsigned int line, |
| 343 | handle_t *handle, struct inode *inode, |
| 344 | struct buffer_head *bh) |
Andrew Morton | 8984d13 | 2006-12-06 20:37:15 -0800 | [diff] [blame] | 345 | { |
Frank Mayhar | 0390131 | 2009-01-07 00:06:22 -0500 | [diff] [blame] | 346 | int err = 0; |
| 347 | |
Theodore Ts'o | b10a44c | 2013-04-03 22:00:52 -0400 | [diff] [blame] | 348 | might_sleep(); |
| 349 | |
Theodore Ts'o | 13fca32 | 2013-04-21 16:45:54 -0400 | [diff] [blame] | 350 | set_buffer_meta(bh); |
| 351 | set_buffer_prio(bh); |
Ye Bin | 558d645 | 2021-06-15 17:05:37 +0800 | [diff] [blame] | 352 | set_buffer_uptodate(bh); |
Frank Mayhar | 0390131 | 2009-01-07 00:06:22 -0500 | [diff] [blame] | 353 | if (ext4_handle_valid(handle)) { |
| 354 | err = jbd2_journal_dirty_metadata(handle, bh); |
Dmitry Monakhov | c5d3119 | 2014-10-01 22:23:15 -0400 | [diff] [blame] | 355 | /* Errors can only happen due to aborted journal or a nasty bug */ |
| 356 | if (!is_handle_aborted(handle) && WARN_ON_ONCE(err)) { |
Jan Kara | 91aa11f | 2013-08-12 09:53:28 -0400 | [diff] [blame] | 357 | ext4_journal_abort_handle(where, line, __func__, bh, |
| 358 | handle, err); |
Theodore Ts'o | 66a4cb1 | 2014-03-12 16:38:03 -0400 | [diff] [blame] | 359 | if (inode == NULL) { |
| 360 | pr_err("EXT4: jbd2_journal_dirty_metadata " |
| 361 | "failed: handle type %u started at " |
| 362 | "line %u, credits %u/%u, errcode %d", |
| 363 | handle->h_type, |
| 364 | handle->h_line_no, |
| 365 | handle->h_requested_credits, |
Jan Kara | a9a8344 | 2019-11-05 17:44:17 +0100 | [diff] [blame] | 366 | jbd2_handle_buffer_credits(handle), err); |
Theodore Ts'o | 66a4cb1 | 2014-03-12 16:38:03 -0400 | [diff] [blame] | 367 | return err; |
| 368 | } |
Theodore Ts'o | ae1495b | 2013-12-02 09:31:36 -0500 | [diff] [blame] | 369 | ext4_error_inode(inode, where, line, |
| 370 | bh->b_blocknr, |
| 371 | "journal_dirty_metadata failed: " |
| 372 | "handle type %u started at line %u, " |
| 373 | "credits %u/%u, errcode %d", |
| 374 | handle->h_type, |
| 375 | handle->h_line_no, |
| 376 | handle->h_requested_credits, |
Jan Kara | a9a8344 | 2019-11-05 17:44:17 +0100 | [diff] [blame] | 377 | jbd2_handle_buffer_credits(handle), |
| 378 | err); |
Theodore Ts'o | 9ea7a0d | 2011-09-04 10:18:14 -0400 | [diff] [blame] | 379 | } |
Frank Mayhar | 0390131 | 2009-01-07 00:06:22 -0500 | [diff] [blame] | 380 | } else { |
Curt Wohlgemuth | 73b50c1 | 2010-02-16 15:06:29 -0500 | [diff] [blame] | 381 | if (inode) |
Theodore Ts'o | fe188c0 | 2009-09-12 13:41:55 -0400 | [diff] [blame] | 382 | mark_buffer_dirty_inode(bh, inode); |
| 383 | else |
| 384 | mark_buffer_dirty(bh); |
Frank Mayhar | 0390131 | 2009-01-07 00:06:22 -0500 | [diff] [blame] | 385 | if (inode && inode_needs_sync(inode)) { |
| 386 | sync_dirty_buffer(bh); |
| 387 | if (buffer_req(bh) && !buffer_uptodate(bh)) { |
Theodore Ts'o | 54d3adb | 2020-03-28 19:33:43 -0400 | [diff] [blame] | 388 | ext4_error_inode_err(inode, where, line, |
| 389 | bh->b_blocknr, EIO, |
Theodore Ts'o | c398eda | 2010-07-27 11:56:40 -0400 | [diff] [blame] | 390 | "IO error syncing itable block"); |
Frank Mayhar | 0390131 | 2009-01-07 00:06:22 -0500 | [diff] [blame] | 391 | err = -EIO; |
| 392 | } |
| 393 | } |
| 394 | } |
Andrew Morton | 8984d13 | 2006-12-06 20:37:15 -0800 | [diff] [blame] | 395 | return err; |
| 396 | } |