1 /* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
6 * vfs' aops, fops, dops and iops
8 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public
21 * License along with this program; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 021110-1307, USA.
27 #include <linux/types.h>
28 #include <linux/slab.h>
29 #include <linux/highmem.h>
30 #include <linux/pagemap.h>
31 #include <linux/quotaops.h>
33 #include <asm/byteorder.h>
35 #define MLOG_MASK_PREFIX ML_INODE
36 #include <cluster/masklog.h>
42 #include "blockcheck.h"
44 #include "extent_map.h"
46 #include "heartbeat.h"
56 #include "refcounttree.h"
58 #include "buffer_head_io.h"
60 struct ocfs2_find_inode_args
64 unsigned int fi_flags
;
65 unsigned int fi_sysfile_type
;
68 static struct lock_class_key ocfs2_sysfile_lock_key
[NUM_SYSTEM_INODES
];
70 static int ocfs2_read_locked_inode(struct inode
*inode
,
71 struct ocfs2_find_inode_args
*args
);
72 static int ocfs2_init_locked_inode(struct inode
*inode
, void *opaque
);
73 static int ocfs2_find_actor(struct inode
*inode
, void *opaque
);
74 static int ocfs2_truncate_for_delete(struct ocfs2_super
*osb
,
76 struct buffer_head
*fe_bh
);
78 void ocfs2_set_inode_flags(struct inode
*inode
)
80 unsigned int flags
= OCFS2_I(inode
)->ip_attr
;
82 inode
->i_flags
&= ~(S_IMMUTABLE
|
83 S_SYNC
| S_APPEND
| S_NOATIME
| S_DIRSYNC
);
85 if (flags
& OCFS2_IMMUTABLE_FL
)
86 inode
->i_flags
|= S_IMMUTABLE
;
88 if (flags
& OCFS2_SYNC_FL
)
89 inode
->i_flags
|= S_SYNC
;
90 if (flags
& OCFS2_APPEND_FL
)
91 inode
->i_flags
|= S_APPEND
;
92 if (flags
& OCFS2_NOATIME_FL
)
93 inode
->i_flags
|= S_NOATIME
;
94 if (flags
& OCFS2_DIRSYNC_FL
)
95 inode
->i_flags
|= S_DIRSYNC
;
98 /* Propagate flags from i_flags to OCFS2_I(inode)->ip_attr */
99 void ocfs2_get_inode_flags(struct ocfs2_inode_info
*oi
)
101 unsigned int flags
= oi
->vfs_inode
.i_flags
;
103 oi
->ip_attr
&= ~(OCFS2_SYNC_FL
|OCFS2_APPEND_FL
|
104 OCFS2_IMMUTABLE_FL
|OCFS2_NOATIME_FL
|OCFS2_DIRSYNC_FL
);
106 oi
->ip_attr
|= OCFS2_SYNC_FL
;
107 if (flags
& S_APPEND
)
108 oi
->ip_attr
|= OCFS2_APPEND_FL
;
109 if (flags
& S_IMMUTABLE
)
110 oi
->ip_attr
|= OCFS2_IMMUTABLE_FL
;
111 if (flags
& S_NOATIME
)
112 oi
->ip_attr
|= OCFS2_NOATIME_FL
;
113 if (flags
& S_DIRSYNC
)
114 oi
->ip_attr
|= OCFS2_DIRSYNC_FL
;
117 struct inode
*ocfs2_ilookup(struct super_block
*sb
, u64 blkno
)
119 struct ocfs2_find_inode_args args
;
121 args
.fi_blkno
= blkno
;
123 args
.fi_ino
= ino_from_blkno(sb
, blkno
);
124 args
.fi_sysfile_type
= 0;
126 return ilookup5(sb
, blkno
, ocfs2_find_actor
, &args
);
128 struct inode
*ocfs2_iget(struct ocfs2_super
*osb
, u64 blkno
, unsigned flags
,
131 struct inode
*inode
= NULL
;
132 struct super_block
*sb
= osb
->sb
;
133 struct ocfs2_find_inode_args args
;
135 mlog_entry("(blkno = %llu)\n", (unsigned long long)blkno
);
137 /* Ok. By now we've either got the offsets passed to us by the
138 * caller, or we just pulled them off the bh. Lets do some
139 * sanity checks to make sure they're OK. */
141 inode
= ERR_PTR(-EINVAL
);
142 mlog_errno(PTR_ERR(inode
));
146 args
.fi_blkno
= blkno
;
147 args
.fi_flags
= flags
;
148 args
.fi_ino
= ino_from_blkno(sb
, blkno
);
149 args
.fi_sysfile_type
= sysfile_type
;
151 inode
= iget5_locked(sb
, args
.fi_ino
, ocfs2_find_actor
,
152 ocfs2_init_locked_inode
, &args
);
153 /* inode was *not* in the inode cache. 2.6.x requires
154 * us to do our own read_inode call and unlock it
156 if (inode
&& inode
->i_state
& I_NEW
) {
157 mlog(0, "Inode was not in inode cache, reading it.\n");
158 ocfs2_read_locked_inode(inode
, &args
);
159 unlock_new_inode(inode
);
162 inode
= ERR_PTR(-ENOMEM
);
163 mlog_errno(PTR_ERR(inode
));
166 if (is_bad_inode(inode
)) {
168 inode
= ERR_PTR(-ESTALE
);
173 if (!IS_ERR(inode
)) {
174 mlog(0, "returning inode with number %llu\n",
175 (unsigned long long)OCFS2_I(inode
)->ip_blkno
);
176 mlog_exit_ptr(inode
);
184 * here's how inodes get read from disk:
185 * iget5_locked -> find_actor -> OCFS2_FIND_ACTOR
186 * found? : return the in-memory inode
187 * not found? : get_new_inode -> OCFS2_INIT_LOCKED_INODE
190 static int ocfs2_find_actor(struct inode
*inode
, void *opaque
)
192 struct ocfs2_find_inode_args
*args
= NULL
;
193 struct ocfs2_inode_info
*oi
= OCFS2_I(inode
);
196 mlog_entry("(0x%p, %lu, 0x%p)\n", inode
, inode
->i_ino
, opaque
);
200 mlog_bug_on_msg(!inode
, "No inode in find actor!\n");
202 if (oi
->ip_blkno
!= args
->fi_blkno
)
212 * initialize the new inode, but don't do anything that would cause
214 * return 0 on success, 1 on failure
216 static int ocfs2_init_locked_inode(struct inode
*inode
, void *opaque
)
218 struct ocfs2_find_inode_args
*args
= opaque
;
219 static struct lock_class_key ocfs2_quota_ip_alloc_sem_key
,
220 ocfs2_file_ip_alloc_sem_key
;
222 mlog_entry("inode = %p, opaque = %p\n", inode
, opaque
);
224 inode
->i_ino
= args
->fi_ino
;
225 OCFS2_I(inode
)->ip_blkno
= args
->fi_blkno
;
226 if (args
->fi_sysfile_type
!= 0)
227 lockdep_set_class(&inode
->i_mutex
,
228 &ocfs2_sysfile_lock_key
[args
->fi_sysfile_type
]);
229 if (args
->fi_sysfile_type
== USER_QUOTA_SYSTEM_INODE
||
230 args
->fi_sysfile_type
== GROUP_QUOTA_SYSTEM_INODE
||
231 args
->fi_sysfile_type
== LOCAL_USER_QUOTA_SYSTEM_INODE
||
232 args
->fi_sysfile_type
== LOCAL_GROUP_QUOTA_SYSTEM_INODE
)
233 lockdep_set_class(&OCFS2_I(inode
)->ip_alloc_sem
,
234 &ocfs2_quota_ip_alloc_sem_key
);
236 lockdep_set_class(&OCFS2_I(inode
)->ip_alloc_sem
,
237 &ocfs2_file_ip_alloc_sem_key
);
243 void ocfs2_populate_inode(struct inode
*inode
, struct ocfs2_dinode
*fe
,
246 struct super_block
*sb
;
247 struct ocfs2_super
*osb
;
250 mlog_entry("(0x%p, size:%llu)\n", inode
,
251 (unsigned long long)le64_to_cpu(fe
->i_size
));
256 if ((osb
->s_mount_opt
& OCFS2_MOUNT_LOCALFLOCKS
) ||
257 ocfs2_mount_local(osb
) || !ocfs2_stack_supports_plocks())
261 * These have all been checked by ocfs2_read_inode_block() or set
262 * by ocfs2_mknod_locked(), so a failure is a code bug.
264 BUG_ON(!OCFS2_IS_VALID_DINODE(fe
)); /* This means that read_inode
265 cannot create a superblock
266 inode today. change if
268 BUG_ON(!(fe
->i_flags
& cpu_to_le32(OCFS2_VALID_FL
)));
269 BUG_ON(le32_to_cpu(fe
->i_fs_generation
) != osb
->fs_generation
);
272 OCFS2_I(inode
)->ip_clusters
= le32_to_cpu(fe
->i_clusters
);
273 OCFS2_I(inode
)->ip_attr
= le32_to_cpu(fe
->i_attr
);
274 OCFS2_I(inode
)->ip_dyn_features
= le16_to_cpu(fe
->i_dyn_features
);
276 inode
->i_version
= 1;
277 inode
->i_generation
= le32_to_cpu(fe
->i_generation
);
278 inode
->i_rdev
= huge_decode_dev(le64_to_cpu(fe
->id1
.dev1
.i_rdev
));
279 inode
->i_mode
= le16_to_cpu(fe
->i_mode
);
280 inode
->i_uid
= le32_to_cpu(fe
->i_uid
);
281 inode
->i_gid
= le32_to_cpu(fe
->i_gid
);
283 /* Fast symlinks will have i_size but no allocated clusters. */
284 if (S_ISLNK(inode
->i_mode
) && !fe
->i_clusters
)
287 inode
->i_blocks
= ocfs2_inode_sector_count(inode
);
288 inode
->i_mapping
->a_ops
= &ocfs2_aops
;
289 inode
->i_atime
.tv_sec
= le64_to_cpu(fe
->i_atime
);
290 inode
->i_atime
.tv_nsec
= le32_to_cpu(fe
->i_atime_nsec
);
291 inode
->i_mtime
.tv_sec
= le64_to_cpu(fe
->i_mtime
);
292 inode
->i_mtime
.tv_nsec
= le32_to_cpu(fe
->i_mtime_nsec
);
293 inode
->i_ctime
.tv_sec
= le64_to_cpu(fe
->i_ctime
);
294 inode
->i_ctime
.tv_nsec
= le32_to_cpu(fe
->i_ctime_nsec
);
296 if (OCFS2_I(inode
)->ip_blkno
!= le64_to_cpu(fe
->i_blkno
))
298 "ip_blkno %llu != i_blkno %llu!\n",
299 (unsigned long long)OCFS2_I(inode
)->ip_blkno
,
300 (unsigned long long)le64_to_cpu(fe
->i_blkno
));
302 inode
->i_nlink
= ocfs2_read_links_count(fe
);
304 if (fe
->i_flags
& cpu_to_le32(OCFS2_SYSTEM_FL
)) {
305 OCFS2_I(inode
)->ip_flags
|= OCFS2_INODE_SYSTEM_FILE
;
306 inode
->i_flags
|= S_NOQUOTA
;
309 if (fe
->i_flags
& cpu_to_le32(OCFS2_LOCAL_ALLOC_FL
)) {
310 OCFS2_I(inode
)->ip_flags
|= OCFS2_INODE_BITMAP
;
311 mlog(0, "local alloc inode: i_ino=%lu\n", inode
->i_ino
);
312 } else if (fe
->i_flags
& cpu_to_le32(OCFS2_BITMAP_FL
)) {
313 OCFS2_I(inode
)->ip_flags
|= OCFS2_INODE_BITMAP
;
314 } else if (fe
->i_flags
& cpu_to_le32(OCFS2_QUOTA_FL
)) {
315 inode
->i_flags
|= S_NOQUOTA
;
316 } else if (fe
->i_flags
& cpu_to_le32(OCFS2_SUPER_BLOCK_FL
)) {
317 mlog(0, "superblock inode: i_ino=%lu\n", inode
->i_ino
);
318 /* we can't actually hit this as read_inode can't
319 * handle superblocks today ;-) */
323 switch (inode
->i_mode
& S_IFMT
) {
326 inode
->i_fop
= &ocfs2_fops
;
328 inode
->i_fop
= &ocfs2_fops_no_plocks
;
329 inode
->i_op
= &ocfs2_file_iops
;
330 i_size_write(inode
, le64_to_cpu(fe
->i_size
));
333 inode
->i_op
= &ocfs2_dir_iops
;
335 inode
->i_fop
= &ocfs2_dops
;
337 inode
->i_fop
= &ocfs2_dops_no_plocks
;
338 i_size_write(inode
, le64_to_cpu(fe
->i_size
));
341 if (ocfs2_inode_is_fast_symlink(inode
))
342 inode
->i_op
= &ocfs2_fast_symlink_inode_operations
;
344 inode
->i_op
= &ocfs2_symlink_inode_operations
;
345 i_size_write(inode
, le64_to_cpu(fe
->i_size
));
348 inode
->i_op
= &ocfs2_special_file_iops
;
349 init_special_inode(inode
, inode
->i_mode
,
355 inode
->i_ino
= ino_from_blkno(inode
->i_sb
,
356 le64_to_cpu(fe
->i_blkno
));
359 * If we ever want to create system files from kernel,
360 * the generation argument to
361 * ocfs2_inode_lock_res_init() will have to change.
363 BUG_ON(le32_to_cpu(fe
->i_flags
) & OCFS2_SYSTEM_FL
);
365 ocfs2_inode_lock_res_init(&OCFS2_I(inode
)->ip_inode_lockres
,
366 OCFS2_LOCK_TYPE_META
, 0, inode
);
368 ocfs2_inode_lock_res_init(&OCFS2_I(inode
)->ip_open_lockres
,
369 OCFS2_LOCK_TYPE_OPEN
, 0, inode
);
372 ocfs2_inode_lock_res_init(&OCFS2_I(inode
)->ip_rw_lockres
,
373 OCFS2_LOCK_TYPE_RW
, inode
->i_generation
,
376 ocfs2_set_inode_flags(inode
);
378 OCFS2_I(inode
)->ip_last_used_slot
= 0;
379 OCFS2_I(inode
)->ip_last_used_group
= 0;
383 static int ocfs2_read_locked_inode(struct inode
*inode
,
384 struct ocfs2_find_inode_args
*args
)
386 struct super_block
*sb
;
387 struct ocfs2_super
*osb
;
388 struct ocfs2_dinode
*fe
;
389 struct buffer_head
*bh
= NULL
;
390 int status
, can_lock
;
393 mlog_entry("(0x%p, 0x%p)\n", inode
, args
);
396 if (inode
== NULL
|| inode
->i_sb
== NULL
) {
397 mlog(ML_ERROR
, "bad inode\n");
404 mlog(ML_ERROR
, "bad inode args\n");
405 make_bad_inode(inode
);
410 * To improve performance of cold-cache inode stats, we take
411 * the cluster lock here if possible.
413 * Generally, OCFS2 never trusts the contents of an inode
414 * unless it's holding a cluster lock, so taking it here isn't
415 * a correctness issue as much as it is a performance
418 * There are three times when taking the lock is not a good idea:
420 * 1) During startup, before we have initialized the DLM.
422 * 2) If we are reading certain system files which never get
423 * cluster locks (local alloc, truncate log).
425 * 3) If the process doing the iget() is responsible for
426 * orphan dir recovery. We're holding the orphan dir lock and
427 * can get into a deadlock with another process on another
428 * node in ->delete_inode().
430 * #1 and #2 can be simply solved by never taking the lock
431 * here for system files (which are the only type we read
432 * during mount). It's a heavier approach, but our main
433 * concern is user-accesible files anyway.
435 * #3 works itself out because we'll eventually take the
436 * cluster lock before trusting anything anyway.
438 can_lock
= !(args
->fi_flags
& OCFS2_FI_FLAG_SYSFILE
)
439 && !(args
->fi_flags
& OCFS2_FI_FLAG_ORPHAN_RECOVERY
)
440 && !ocfs2_mount_local(osb
);
443 * To maintain backwards compatibility with older versions of
444 * ocfs2-tools, we still store the generation value for system
445 * files. The only ones that actually matter to userspace are
446 * the journals, but it's easier and inexpensive to just flag
447 * all system files similarly.
449 if (args
->fi_flags
& OCFS2_FI_FLAG_SYSFILE
)
450 generation
= osb
->fs_generation
;
452 ocfs2_inode_lock_res_init(&OCFS2_I(inode
)->ip_inode_lockres
,
453 OCFS2_LOCK_TYPE_META
,
456 ocfs2_inode_lock_res_init(&OCFS2_I(inode
)->ip_open_lockres
,
457 OCFS2_LOCK_TYPE_OPEN
,
461 status
= ocfs2_open_lock(inode
);
463 make_bad_inode(inode
);
467 status
= ocfs2_inode_lock(inode
, NULL
, 0);
469 make_bad_inode(inode
);
475 if (args
->fi_flags
& OCFS2_FI_FLAG_ORPHAN_RECOVERY
) {
476 status
= ocfs2_try_open_lock(inode
, 0);
478 make_bad_inode(inode
);
484 status
= ocfs2_read_inode_block_full(inode
, &bh
,
485 OCFS2_BH_IGNORE_CACHE
);
487 status
= ocfs2_read_blocks_sync(osb
, args
->fi_blkno
, 1, &bh
);
489 status
= ocfs2_validate_inode_block(osb
->sb
, bh
);
497 fe
= (struct ocfs2_dinode
*) bh
->b_data
;
500 * This is a code bug. Right now the caller needs to
501 * understand whether it is asking for a system file inode or
502 * not so the proper lock names can be built.
504 mlog_bug_on_msg(!!(fe
->i_flags
& cpu_to_le32(OCFS2_SYSTEM_FL
)) !=
505 !!(args
->fi_flags
& OCFS2_FI_FLAG_SYSFILE
),
506 "Inode %llu: system file state is ambigous\n",
507 (unsigned long long)args
->fi_blkno
);
509 if (S_ISCHR(le16_to_cpu(fe
->i_mode
)) ||
510 S_ISBLK(le16_to_cpu(fe
->i_mode
)))
511 inode
->i_rdev
= huge_decode_dev(le64_to_cpu(fe
->id1
.dev1
.i_rdev
));
513 ocfs2_populate_inode(inode
, fe
, 0);
515 BUG_ON(args
->fi_blkno
!= le64_to_cpu(fe
->i_blkno
));
521 ocfs2_inode_unlock(inode
, 0);
524 make_bad_inode(inode
);
533 void ocfs2_sync_blockdev(struct super_block
*sb
)
535 sync_blockdev(sb
->s_bdev
);
538 static int ocfs2_truncate_for_delete(struct ocfs2_super
*osb
,
540 struct buffer_head
*fe_bh
)
543 struct ocfs2_truncate_context
*tc
= NULL
;
544 struct ocfs2_dinode
*fe
;
545 handle_t
*handle
= NULL
;
549 fe
= (struct ocfs2_dinode
*) fe_bh
->b_data
;
552 * This check will also skip truncate of inodes with inline
553 * data and fast symlinks.
555 if (fe
->i_clusters
) {
556 if (ocfs2_should_order_data(inode
))
557 ocfs2_begin_ordered_truncate(inode
, 0);
559 handle
= ocfs2_start_trans(osb
, OCFS2_INODE_UPDATE_CREDITS
);
560 if (IS_ERR(handle
)) {
561 status
= PTR_ERR(handle
);
566 status
= ocfs2_journal_access_di(handle
, INODE_CACHE(inode
),
568 OCFS2_JOURNAL_ACCESS_WRITE
);
574 i_size_write(inode
, 0);
576 status
= ocfs2_mark_inode_dirty(handle
, inode
, fe_bh
);
582 ocfs2_commit_trans(osb
, handle
);
585 status
= ocfs2_prepare_truncate(osb
, inode
, fe_bh
, &tc
);
591 status
= ocfs2_commit_truncate(osb
, inode
, fe_bh
, tc
);
600 ocfs2_commit_trans(osb
, handle
);
605 static int ocfs2_remove_inode(struct inode
*inode
,
606 struct buffer_head
*di_bh
,
607 struct inode
*orphan_dir_inode
,
608 struct buffer_head
*orphan_dir_bh
)
611 struct inode
*inode_alloc_inode
= NULL
;
612 struct buffer_head
*inode_alloc_bh
= NULL
;
614 struct ocfs2_super
*osb
= OCFS2_SB(inode
->i_sb
);
615 struct ocfs2_dinode
*di
= (struct ocfs2_dinode
*) di_bh
->b_data
;
618 ocfs2_get_system_file_inode(osb
, INODE_ALLOC_SYSTEM_INODE
,
619 le16_to_cpu(di
->i_suballoc_slot
));
620 if (!inode_alloc_inode
) {
626 mutex_lock(&inode_alloc_inode
->i_mutex
);
627 status
= ocfs2_inode_lock(inode_alloc_inode
, &inode_alloc_bh
, 1);
629 mutex_unlock(&inode_alloc_inode
->i_mutex
);
635 handle
= ocfs2_start_trans(osb
, OCFS2_DELETE_INODE_CREDITS
+
636 ocfs2_quota_trans_credits(inode
->i_sb
));
637 if (IS_ERR(handle
)) {
638 status
= PTR_ERR(handle
);
643 status
= ocfs2_orphan_del(osb
, handle
, orphan_dir_inode
, inode
,
650 /* set the inodes dtime */
651 status
= ocfs2_journal_access_di(handle
, INODE_CACHE(inode
), di_bh
,
652 OCFS2_JOURNAL_ACCESS_WRITE
);
658 di
->i_dtime
= cpu_to_le64(CURRENT_TIME
.tv_sec
);
659 di
->i_flags
&= cpu_to_le32(~(OCFS2_VALID_FL
| OCFS2_ORPHANED_FL
));
660 ocfs2_journal_dirty(handle
, di_bh
);
662 ocfs2_remove_from_cache(INODE_CACHE(inode
), di_bh
);
663 dquot_free_inode(inode
);
665 status
= ocfs2_free_dinode(handle
, inode_alloc_inode
,
671 ocfs2_commit_trans(osb
, handle
);
673 ocfs2_inode_unlock(inode_alloc_inode
, 1);
674 mutex_unlock(&inode_alloc_inode
->i_mutex
);
675 brelse(inode_alloc_bh
);
677 iput(inode_alloc_inode
);
683 * Serialize with orphan dir recovery. If the process doing
684 * recovery on this orphan dir does an iget() with the dir
685 * i_mutex held, we'll deadlock here. Instead we detect this
686 * and exit early - recovery will wipe this inode for us.
688 static int ocfs2_check_orphan_recovery_state(struct ocfs2_super
*osb
,
693 spin_lock(&osb
->osb_lock
);
694 if (ocfs2_node_map_test_bit(osb
, &osb
->osb_recovering_orphan_dirs
, slot
)) {
695 mlog(0, "Recovery is happening on orphan dir %d, will skip "
696 "this inode\n", slot
);
700 /* This signals to the orphan recovery process that it should
701 * wait for us to handle the wipe. */
702 osb
->osb_orphan_wipes
[slot
]++;
704 spin_unlock(&osb
->osb_lock
);
708 static void ocfs2_signal_wipe_completion(struct ocfs2_super
*osb
,
711 spin_lock(&osb
->osb_lock
);
712 osb
->osb_orphan_wipes
[slot
]--;
713 spin_unlock(&osb
->osb_lock
);
715 wake_up(&osb
->osb_wipe_event
);
718 static int ocfs2_wipe_inode(struct inode
*inode
,
719 struct buffer_head
*di_bh
)
721 int status
, orphaned_slot
;
722 struct inode
*orphan_dir_inode
= NULL
;
723 struct buffer_head
*orphan_dir_bh
= NULL
;
724 struct ocfs2_super
*osb
= OCFS2_SB(inode
->i_sb
);
725 struct ocfs2_dinode
*di
;
727 di
= (struct ocfs2_dinode
*) di_bh
->b_data
;
728 orphaned_slot
= le16_to_cpu(di
->i_orphaned_slot
);
730 status
= ocfs2_check_orphan_recovery_state(osb
, orphaned_slot
);
734 orphan_dir_inode
= ocfs2_get_system_file_inode(osb
,
735 ORPHAN_DIR_SYSTEM_INODE
,
737 if (!orphan_dir_inode
) {
743 /* Lock the orphan dir. The lock will be held for the entire
744 * delete_inode operation. We do this now to avoid races with
745 * recovery completion on other nodes. */
746 mutex_lock(&orphan_dir_inode
->i_mutex
);
747 status
= ocfs2_inode_lock(orphan_dir_inode
, &orphan_dir_bh
, 1);
749 mutex_unlock(&orphan_dir_inode
->i_mutex
);
755 /* we do this while holding the orphan dir lock because we
756 * don't want recovery being run from another node to try an
757 * inode delete underneath us -- this will result in two nodes
758 * truncating the same file! */
759 status
= ocfs2_truncate_for_delete(osb
, inode
, di_bh
);
762 goto bail_unlock_dir
;
765 /* Remove any dir index tree */
766 if (S_ISDIR(inode
->i_mode
)) {
767 status
= ocfs2_dx_dir_truncate(inode
, di_bh
);
770 goto bail_unlock_dir
;
774 /*Free extended attribute resources associated with this inode.*/
775 status
= ocfs2_xattr_remove(inode
, di_bh
);
778 goto bail_unlock_dir
;
781 status
= ocfs2_remove_refcount_tree(inode
, di_bh
);
784 goto bail_unlock_dir
;
787 status
= ocfs2_remove_inode(inode
, di_bh
, orphan_dir_inode
,
793 ocfs2_inode_unlock(orphan_dir_inode
, 1);
794 mutex_unlock(&orphan_dir_inode
->i_mutex
);
795 brelse(orphan_dir_bh
);
797 iput(orphan_dir_inode
);
798 ocfs2_signal_wipe_completion(osb
, orphaned_slot
);
803 /* There is a series of simple checks that should be done before a
804 * trylock is even considered. Encapsulate those in this function. */
805 static int ocfs2_inode_is_valid_to_delete(struct inode
*inode
)
808 struct ocfs2_inode_info
*oi
= OCFS2_I(inode
);
809 struct ocfs2_super
*osb
= OCFS2_SB(inode
->i_sb
);
811 /* We shouldn't be getting here for the root directory
813 if (inode
== osb
->root_inode
) {
814 mlog(ML_ERROR
, "Skipping delete of root inode.\n");
818 /* If we're coming from downconvert_thread we can't go into our own
819 * voting [hello, deadlock city!], so unforuntately we just
820 * have to skip deleting this guy. That's OK though because
821 * the node who's doing the actual deleting should handle it
823 if (current
== osb
->dc_task
) {
824 mlog(0, "Skipping delete of %lu because we're currently "
825 "in downconvert\n", inode
->i_ino
);
829 spin_lock(&oi
->ip_lock
);
830 /* OCFS2 *never* deletes system files. This should technically
831 * never get here as system file inodes should always have a
832 * positive link count. */
833 if (oi
->ip_flags
& OCFS2_INODE_SYSTEM_FILE
) {
834 mlog(ML_ERROR
, "Skipping delete of system file %llu\n",
835 (unsigned long long)oi
->ip_blkno
);
839 /* If we have allowd wipe of this inode for another node, it
840 * will be marked here so we can safely skip it. Recovery will
841 * cleanup any inodes we might inadvertantly skip here. */
842 if (oi
->ip_flags
& OCFS2_INODE_SKIP_DELETE
) {
843 mlog(0, "Skipping delete of %lu because another node "
844 "has done this for us.\n", inode
->i_ino
);
850 spin_unlock(&oi
->ip_lock
);
855 /* Query the cluster to determine whether we should wipe an inode from
858 * Requires the inode to have the cluster lock. */
859 static int ocfs2_query_inode_wipe(struct inode
*inode
,
860 struct buffer_head
*di_bh
,
864 struct ocfs2_inode_info
*oi
= OCFS2_I(inode
);
865 struct ocfs2_dinode
*di
;
869 /* While we were waiting for the cluster lock in
870 * ocfs2_delete_inode, another node might have asked to delete
871 * the inode. Recheck our flags to catch this. */
872 if (!ocfs2_inode_is_valid_to_delete(inode
)) {
873 mlog(0, "Skipping delete of %llu because flags changed\n",
874 (unsigned long long)oi
->ip_blkno
);
878 /* Now that we have an up to date inode, we can double check
880 if (inode
->i_nlink
) {
881 mlog(0, "Skipping delete of %llu because nlink = %u\n",
882 (unsigned long long)oi
->ip_blkno
, inode
->i_nlink
);
886 /* Do some basic inode verification... */
887 di
= (struct ocfs2_dinode
*) di_bh
->b_data
;
888 if (!(di
->i_flags
& cpu_to_le32(OCFS2_ORPHANED_FL
))) {
889 /* for lack of a better error? */
892 "Inode %llu (on-disk %llu) not orphaned! "
893 "Disk flags 0x%x, inode flags 0x%x\n",
894 (unsigned long long)oi
->ip_blkno
,
895 (unsigned long long)le64_to_cpu(di
->i_blkno
),
896 le32_to_cpu(di
->i_flags
), oi
->ip_flags
);
900 /* has someone already deleted us?! baaad... */
908 * This is how ocfs2 determines whether an inode is still live
909 * within the cluster. Every node takes a shared read lock on
910 * the inode open lock in ocfs2_read_locked_inode(). When we
911 * get to ->delete_inode(), each node tries to convert it's
912 * lock to an exclusive. Trylocks are serialized by the inode
913 * meta data lock. If the upconvert suceeds, we know the inode
914 * is no longer live and can be deleted.
916 * Though we call this with the meta data lock held, the
917 * trylock keeps us from ABBA deadlock.
919 status
= ocfs2_try_open_lock(inode
, 1);
920 if (status
== -EAGAIN
) {
922 mlog(0, "Skipping delete of %llu because it is in use on "
923 "other nodes\n", (unsigned long long)oi
->ip_blkno
);
932 mlog(0, "Inode %llu is ok to wipe from orphan dir %u\n",
933 (unsigned long long)oi
->ip_blkno
,
934 le16_to_cpu(di
->i_orphaned_slot
));
940 /* Support function for ocfs2_delete_inode. Will help us keep the
941 * inode data in a consistent state for clear_inode. Always truncates
942 * pages, optionally sync's them first. */
943 static void ocfs2_cleanup_delete_inode(struct inode
*inode
,
946 mlog(0, "Cleanup inode %llu, sync = %d\n",
947 (unsigned long long)OCFS2_I(inode
)->ip_blkno
, sync_data
);
949 write_inode_now(inode
, 1);
950 truncate_inode_pages(&inode
->i_data
, 0);
953 void ocfs2_delete_inode(struct inode
*inode
)
956 sigset_t blocked
, oldset
;
957 struct buffer_head
*di_bh
= NULL
;
959 mlog_entry("(inode->i_ino = %lu)\n", inode
->i_ino
);
961 /* When we fail in read_inode() we mark inode as bad. The second test
962 * catches the case when inode allocation fails before allocating
963 * a block for inode. */
964 if (is_bad_inode(inode
) || !OCFS2_I(inode
)->ip_blkno
) {
965 mlog(0, "Skipping delete of bad inode\n");
969 dquot_initialize(inode
);
971 if (!ocfs2_inode_is_valid_to_delete(inode
)) {
972 /* It's probably not necessary to truncate_inode_pages
973 * here but we do it for safety anyway (it will most
974 * likely be a no-op anyway) */
975 ocfs2_cleanup_delete_inode(inode
, 0);
979 /* We want to block signals in delete_inode as the lock and
980 * messaging paths may return us -ERESTARTSYS. Which would
981 * cause us to exit early, resulting in inodes being orphaned
983 sigfillset(&blocked
);
984 status
= sigprocmask(SIG_BLOCK
, &blocked
, &oldset
);
987 ocfs2_cleanup_delete_inode(inode
, 1);
992 * Synchronize us against ocfs2_get_dentry. We take this in
993 * shared mode so that all nodes can still concurrently
996 status
= ocfs2_nfs_sync_lock(OCFS2_SB(inode
->i_sb
), 0);
998 mlog(ML_ERROR
, "getting nfs sync lock(PR) failed %d\n", status
);
999 ocfs2_cleanup_delete_inode(inode
, 0);
1002 /* Lock down the inode. This gives us an up to date view of
1003 * it's metadata (for verification), and allows us to
1004 * serialize delete_inode on multiple nodes.
1006 * Even though we might be doing a truncate, we don't take the
1007 * allocation lock here as it won't be needed - nobody will
1008 * have the file open.
1010 status
= ocfs2_inode_lock(inode
, &di_bh
, 1);
1012 if (status
!= -ENOENT
)
1014 ocfs2_cleanup_delete_inode(inode
, 0);
1015 goto bail_unlock_nfs_sync
;
1018 /* Query the cluster. This will be the final decision made
1019 * before we go ahead and wipe the inode. */
1020 status
= ocfs2_query_inode_wipe(inode
, di_bh
, &wipe
);
1021 if (!wipe
|| status
< 0) {
1022 /* Error and remote inode busy both mean we won't be
1023 * removing the inode, so they take almost the same
1028 /* Someone in the cluster has disallowed a wipe of
1029 * this inode, or it was never completely
1030 * orphaned. Write out the pages and exit now. */
1031 ocfs2_cleanup_delete_inode(inode
, 1);
1032 goto bail_unlock_inode
;
1035 ocfs2_cleanup_delete_inode(inode
, 0);
1037 status
= ocfs2_wipe_inode(inode
, di_bh
);
1039 if (status
!= -EDEADLK
)
1041 goto bail_unlock_inode
;
1045 * Mark the inode as successfully deleted.
1047 * This is important for ocfs2_clear_inode() as it will check
1048 * this flag and skip any checkpointing work
1050 * ocfs2_stuff_meta_lvb() also uses this flag to invalidate
1051 * the LVB for other nodes.
1053 OCFS2_I(inode
)->ip_flags
|= OCFS2_INODE_DELETED
;
1056 ocfs2_inode_unlock(inode
, 1);
1059 bail_unlock_nfs_sync
:
1060 ocfs2_nfs_sync_unlock(OCFS2_SB(inode
->i_sb
), 0);
1063 status
= sigprocmask(SIG_SETMASK
, &oldset
, NULL
);
1071 void ocfs2_clear_inode(struct inode
*inode
)
1074 struct ocfs2_inode_info
*oi
= OCFS2_I(inode
);
1081 mlog(0, "Clearing inode: %llu, nlink = %u\n",
1082 (unsigned long long)OCFS2_I(inode
)->ip_blkno
, inode
->i_nlink
);
1084 mlog_bug_on_msg(OCFS2_SB(inode
->i_sb
) == NULL
,
1085 "Inode=%lu\n", inode
->i_ino
);
1089 /* To preven remote deletes we hold open lock before, now it
1090 * is time to unlock PR and EX open locks. */
1091 ocfs2_open_unlock(inode
);
1093 /* Do these before all the other work so that we don't bounce
1094 * the downconvert thread while waiting to destroy the locks. */
1095 ocfs2_mark_lockres_freeing(&oi
->ip_rw_lockres
);
1096 ocfs2_mark_lockres_freeing(&oi
->ip_inode_lockres
);
1097 ocfs2_mark_lockres_freeing(&oi
->ip_open_lockres
);
1099 ocfs2_resv_discard(&OCFS2_SB(inode
->i_sb
)->osb_la_resmap
,
1100 &oi
->ip_la_data_resv
);
1101 ocfs2_resv_init_once(&oi
->ip_la_data_resv
);
1103 /* We very well may get a clear_inode before all an inodes
1104 * metadata has hit disk. Of course, we can't drop any cluster
1105 * locks until the journal has finished with it. The only
1106 * exception here are successfully wiped inodes - their
1107 * metadata can now be considered to be part of the system
1108 * inodes from which it came. */
1109 if (!(OCFS2_I(inode
)->ip_flags
& OCFS2_INODE_DELETED
))
1110 ocfs2_checkpoint_inode(inode
);
1112 mlog_bug_on_msg(!list_empty(&oi
->ip_io_markers
),
1113 "Clear inode of %llu, inode has io markers\n",
1114 (unsigned long long)oi
->ip_blkno
);
1116 ocfs2_extent_map_trunc(inode
, 0);
1118 status
= ocfs2_drop_inode_locks(inode
);
1122 ocfs2_lock_res_free(&oi
->ip_rw_lockres
);
1123 ocfs2_lock_res_free(&oi
->ip_inode_lockres
);
1124 ocfs2_lock_res_free(&oi
->ip_open_lockres
);
1126 ocfs2_metadata_cache_exit(INODE_CACHE(inode
));
1128 mlog_bug_on_msg(INODE_CACHE(inode
)->ci_num_cached
,
1129 "Clear inode of %llu, inode has %u cache items\n",
1130 (unsigned long long)oi
->ip_blkno
,
1131 INODE_CACHE(inode
)->ci_num_cached
);
1133 mlog_bug_on_msg(!(INODE_CACHE(inode
)->ci_flags
& OCFS2_CACHE_FL_INLINE
),
1134 "Clear inode of %llu, inode has a bad flag\n",
1135 (unsigned long long)oi
->ip_blkno
);
1137 mlog_bug_on_msg(spin_is_locked(&oi
->ip_lock
),
1138 "Clear inode of %llu, inode is locked\n",
1139 (unsigned long long)oi
->ip_blkno
);
1141 mlog_bug_on_msg(!mutex_trylock(&oi
->ip_io_mutex
),
1142 "Clear inode of %llu, io_mutex is locked\n",
1143 (unsigned long long)oi
->ip_blkno
);
1144 mutex_unlock(&oi
->ip_io_mutex
);
1147 * down_trylock() returns 0, down_write_trylock() returns 1
1150 mlog_bug_on_msg(!down_write_trylock(&oi
->ip_alloc_sem
),
1151 "Clear inode of %llu, alloc_sem is locked\n",
1152 (unsigned long long)oi
->ip_blkno
);
1153 up_write(&oi
->ip_alloc_sem
);
1155 mlog_bug_on_msg(oi
->ip_open_count
,
1156 "Clear inode of %llu has open count %d\n",
1157 (unsigned long long)oi
->ip_blkno
, oi
->ip_open_count
);
1159 /* Clear all other flags. */
1161 oi
->ip_dir_start_lookup
= 0;
1162 oi
->ip_blkno
= 0ULL;
1165 * ip_jinode is used to track txns against this inode. We ensure that
1166 * the journal is flushed before journal shutdown. Thus it is safe to
1167 * have inodes get cleaned up after journal shutdown.
1169 jbd2_journal_release_jbd_inode(OCFS2_SB(inode
->i_sb
)->journal
->j_journal
,
1176 /* Called under inode_lock, with no more references on the
1177 * struct inode, so it's safe here to check the flags field
1178 * and to manipulate i_nlink without any other locks. */
1179 void ocfs2_drop_inode(struct inode
*inode
)
1181 struct ocfs2_inode_info
*oi
= OCFS2_I(inode
);
1185 mlog(0, "Drop inode %llu, nlink = %u, ip_flags = 0x%x\n",
1186 (unsigned long long)oi
->ip_blkno
, inode
->i_nlink
, oi
->ip_flags
);
1188 if (oi
->ip_flags
& OCFS2_INODE_MAYBE_ORPHANED
)
1189 generic_delete_inode(inode
);
1191 generic_drop_inode(inode
);
1197 * This is called from our getattr.
1199 int ocfs2_inode_revalidate(struct dentry
*dentry
)
1201 struct inode
*inode
= dentry
->d_inode
;
1204 mlog_entry("(inode = 0x%p, ino = %llu)\n", inode
,
1205 inode
? (unsigned long long)OCFS2_I(inode
)->ip_blkno
: 0ULL);
1208 mlog(0, "eep, no inode!\n");
1213 spin_lock(&OCFS2_I(inode
)->ip_lock
);
1214 if (OCFS2_I(inode
)->ip_flags
& OCFS2_INODE_DELETED
) {
1215 spin_unlock(&OCFS2_I(inode
)->ip_lock
);
1216 mlog(0, "inode deleted!\n");
1220 spin_unlock(&OCFS2_I(inode
)->ip_lock
);
1222 /* Let ocfs2_inode_lock do the work of updating our struct
1224 status
= ocfs2_inode_lock(inode
, NULL
, 0);
1226 if (status
!= -ENOENT
)
1230 ocfs2_inode_unlock(inode
, 0);
1238 * Updates a disk inode from a
1240 * Only takes ip_lock.
1242 int ocfs2_mark_inode_dirty(handle_t
*handle
,
1243 struct inode
*inode
,
1244 struct buffer_head
*bh
)
1247 struct ocfs2_dinode
*fe
= (struct ocfs2_dinode
*) bh
->b_data
;
1249 mlog_entry("(inode %llu)\n",
1250 (unsigned long long)OCFS2_I(inode
)->ip_blkno
);
1252 status
= ocfs2_journal_access_di(handle
, INODE_CACHE(inode
), bh
,
1253 OCFS2_JOURNAL_ACCESS_WRITE
);
1259 spin_lock(&OCFS2_I(inode
)->ip_lock
);
1260 fe
->i_clusters
= cpu_to_le32(OCFS2_I(inode
)->ip_clusters
);
1261 ocfs2_get_inode_flags(OCFS2_I(inode
));
1262 fe
->i_attr
= cpu_to_le32(OCFS2_I(inode
)->ip_attr
);
1263 fe
->i_dyn_features
= cpu_to_le16(OCFS2_I(inode
)->ip_dyn_features
);
1264 spin_unlock(&OCFS2_I(inode
)->ip_lock
);
1266 fe
->i_size
= cpu_to_le64(i_size_read(inode
));
1267 ocfs2_set_links_count(fe
, inode
->i_nlink
);
1268 fe
->i_uid
= cpu_to_le32(inode
->i_uid
);
1269 fe
->i_gid
= cpu_to_le32(inode
->i_gid
);
1270 fe
->i_mode
= cpu_to_le16(inode
->i_mode
);
1271 fe
->i_atime
= cpu_to_le64(inode
->i_atime
.tv_sec
);
1272 fe
->i_atime_nsec
= cpu_to_le32(inode
->i_atime
.tv_nsec
);
1273 fe
->i_ctime
= cpu_to_le64(inode
->i_ctime
.tv_sec
);
1274 fe
->i_ctime_nsec
= cpu_to_le32(inode
->i_ctime
.tv_nsec
);
1275 fe
->i_mtime
= cpu_to_le64(inode
->i_mtime
.tv_sec
);
1276 fe
->i_mtime_nsec
= cpu_to_le32(inode
->i_mtime
.tv_nsec
);
1278 ocfs2_journal_dirty(handle
, bh
);
1286 * Updates a struct inode from a disk inode.
1287 * does no i/o, only takes ip_lock.
1289 void ocfs2_refresh_inode(struct inode
*inode
,
1290 struct ocfs2_dinode
*fe
)
1292 spin_lock(&OCFS2_I(inode
)->ip_lock
);
1294 OCFS2_I(inode
)->ip_clusters
= le32_to_cpu(fe
->i_clusters
);
1295 OCFS2_I(inode
)->ip_attr
= le32_to_cpu(fe
->i_attr
);
1296 OCFS2_I(inode
)->ip_dyn_features
= le16_to_cpu(fe
->i_dyn_features
);
1297 ocfs2_set_inode_flags(inode
);
1298 i_size_write(inode
, le64_to_cpu(fe
->i_size
));
1299 inode
->i_nlink
= ocfs2_read_links_count(fe
);
1300 inode
->i_uid
= le32_to_cpu(fe
->i_uid
);
1301 inode
->i_gid
= le32_to_cpu(fe
->i_gid
);
1302 inode
->i_mode
= le16_to_cpu(fe
->i_mode
);
1303 if (S_ISLNK(inode
->i_mode
) && le32_to_cpu(fe
->i_clusters
) == 0)
1304 inode
->i_blocks
= 0;
1306 inode
->i_blocks
= ocfs2_inode_sector_count(inode
);
1307 inode
->i_atime
.tv_sec
= le64_to_cpu(fe
->i_atime
);
1308 inode
->i_atime
.tv_nsec
= le32_to_cpu(fe
->i_atime_nsec
);
1309 inode
->i_mtime
.tv_sec
= le64_to_cpu(fe
->i_mtime
);
1310 inode
->i_mtime
.tv_nsec
= le32_to_cpu(fe
->i_mtime_nsec
);
1311 inode
->i_ctime
.tv_sec
= le64_to_cpu(fe
->i_ctime
);
1312 inode
->i_ctime
.tv_nsec
= le32_to_cpu(fe
->i_ctime_nsec
);
1314 spin_unlock(&OCFS2_I(inode
)->ip_lock
);
1317 int ocfs2_validate_inode_block(struct super_block
*sb
,
1318 struct buffer_head
*bh
)
1321 struct ocfs2_dinode
*di
= (struct ocfs2_dinode
*)bh
->b_data
;
1323 mlog(0, "Validating dinode %llu\n",
1324 (unsigned long long)bh
->b_blocknr
);
1326 BUG_ON(!buffer_uptodate(bh
));
1329 * If the ecc fails, we return the error but otherwise
1330 * leave the filesystem running. We know any error is
1331 * local to this block.
1333 rc
= ocfs2_validate_meta_ecc(sb
, bh
->b_data
, &di
->i_check
);
1335 mlog(ML_ERROR
, "Checksum failed for dinode %llu\n",
1336 (unsigned long long)bh
->b_blocknr
);
1341 * Errors after here are fatal.
1346 if (!OCFS2_IS_VALID_DINODE(di
)) {
1347 ocfs2_error(sb
, "Invalid dinode #%llu: signature = %.*s\n",
1348 (unsigned long long)bh
->b_blocknr
, 7,
1353 if (le64_to_cpu(di
->i_blkno
) != bh
->b_blocknr
) {
1354 ocfs2_error(sb
, "Invalid dinode #%llu: i_blkno is %llu\n",
1355 (unsigned long long)bh
->b_blocknr
,
1356 (unsigned long long)le64_to_cpu(di
->i_blkno
));
1360 if (!(di
->i_flags
& cpu_to_le32(OCFS2_VALID_FL
))) {
1362 "Invalid dinode #%llu: OCFS2_VALID_FL not set\n",
1363 (unsigned long long)bh
->b_blocknr
);
1367 if (le32_to_cpu(di
->i_fs_generation
) !=
1368 OCFS2_SB(sb
)->fs_generation
) {
1370 "Invalid dinode #%llu: fs_generation is %u\n",
1371 (unsigned long long)bh
->b_blocknr
,
1372 le32_to_cpu(di
->i_fs_generation
));
1382 int ocfs2_read_inode_block_full(struct inode
*inode
, struct buffer_head
**bh
,
1386 struct buffer_head
*tmp
= *bh
;
1388 rc
= ocfs2_read_blocks(INODE_CACHE(inode
), OCFS2_I(inode
)->ip_blkno
,
1389 1, &tmp
, flags
, ocfs2_validate_inode_block
);
1391 /* If ocfs2_read_blocks() got us a new bh, pass it up. */
1398 int ocfs2_read_inode_block(struct inode
*inode
, struct buffer_head
**bh
)
1400 return ocfs2_read_inode_block_full(inode
, bh
, 0);
1404 static u64
ocfs2_inode_cache_owner(struct ocfs2_caching_info
*ci
)
1406 struct ocfs2_inode_info
*oi
= cache_info_to_inode(ci
);
1408 return oi
->ip_blkno
;
1411 static struct super_block
*ocfs2_inode_cache_get_super(struct ocfs2_caching_info
*ci
)
1413 struct ocfs2_inode_info
*oi
= cache_info_to_inode(ci
);
1415 return oi
->vfs_inode
.i_sb
;
1418 static void ocfs2_inode_cache_lock(struct ocfs2_caching_info
*ci
)
1420 struct ocfs2_inode_info
*oi
= cache_info_to_inode(ci
);
1422 spin_lock(&oi
->ip_lock
);
1425 static void ocfs2_inode_cache_unlock(struct ocfs2_caching_info
*ci
)
1427 struct ocfs2_inode_info
*oi
= cache_info_to_inode(ci
);
1429 spin_unlock(&oi
->ip_lock
);
1432 static void ocfs2_inode_cache_io_lock(struct ocfs2_caching_info
*ci
)
1434 struct ocfs2_inode_info
*oi
= cache_info_to_inode(ci
);
1436 mutex_lock(&oi
->ip_io_mutex
);
1439 static void ocfs2_inode_cache_io_unlock(struct ocfs2_caching_info
*ci
)
1441 struct ocfs2_inode_info
*oi
= cache_info_to_inode(ci
);
1443 mutex_unlock(&oi
->ip_io_mutex
);
1446 const struct ocfs2_caching_operations ocfs2_inode_caching_ops
= {
1447 .co_owner
= ocfs2_inode_cache_owner
,
1448 .co_get_super
= ocfs2_inode_cache_get_super
,
1449 .co_cache_lock
= ocfs2_inode_cache_lock
,
1450 .co_cache_unlock
= ocfs2_inode_cache_unlock
,
1451 .co_io_lock
= ocfs2_inode_cache_io_lock
,
1452 .co_io_unlock
= ocfs2_inode_cache_io_unlock
,