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/smp_lock.h>
33 #include <asm/byteorder.h>
35 #define MLOG_MASK_PREFIX ML_INODE
36 #include <cluster/masklog.h>
42 #include "extent_map.h"
54 #include "buffer_head_io.h"
56 #define OCFS2_FI_FLAG_NOWAIT 0x1
57 #define OCFS2_FI_FLAG_DELETE 0x2
58 struct ocfs2_find_inode_args
62 unsigned int fi_flags
;
65 static int ocfs2_read_locked_inode(struct inode
*inode
,
66 struct ocfs2_find_inode_args
*args
);
67 static int ocfs2_init_locked_inode(struct inode
*inode
, void *opaque
);
68 static int ocfs2_find_actor(struct inode
*inode
, void *opaque
);
69 static int ocfs2_truncate_for_delete(struct ocfs2_super
*osb
,
71 struct buffer_head
*fe_bh
);
73 struct inode
*ocfs2_ilookup_for_vote(struct ocfs2_super
*osb
,
77 struct ocfs2_find_inode_args args
;
79 /* ocfs2_ilookup_for_vote should *only* be called from the
81 BUG_ON(current
!= osb
->vote_task
);
83 args
.fi_blkno
= blkno
;
84 args
.fi_flags
= OCFS2_FI_FLAG_NOWAIT
;
86 args
.fi_flags
|= OCFS2_FI_FLAG_DELETE
;
87 args
.fi_ino
= ino_from_blkno(osb
->sb
, blkno
);
88 return ilookup5(osb
->sb
, args
.fi_ino
, ocfs2_find_actor
, &args
);
91 struct inode
*ocfs2_iget(struct ocfs2_super
*osb
, u64 blkno
)
93 struct inode
*inode
= NULL
;
94 struct super_block
*sb
= osb
->sb
;
95 struct ocfs2_find_inode_args args
;
97 mlog_entry("(blkno = %"MLFu64
")\n", blkno
);
99 /* Ok. By now we've either got the offsets passed to us by the
100 * caller, or we just pulled them off the bh. Lets do some
101 * sanity checks to make sure they're OK. */
103 inode
= ERR_PTR(-EINVAL
);
104 mlog_errno(PTR_ERR(inode
));
108 args
.fi_blkno
= blkno
;
110 args
.fi_ino
= ino_from_blkno(sb
, blkno
);
112 inode
= iget5_locked(sb
, args
.fi_ino
, ocfs2_find_actor
,
113 ocfs2_init_locked_inode
, &args
);
114 /* inode was *not* in the inode cache. 2.6.x requires
115 * us to do our own read_inode call and unlock it
117 if (inode
&& inode
->i_state
& I_NEW
) {
118 mlog(0, "Inode was not in inode cache, reading it.\n");
119 ocfs2_read_locked_inode(inode
, &args
);
120 unlock_new_inode(inode
);
123 inode
= ERR_PTR(-ENOMEM
);
124 mlog_errno(PTR_ERR(inode
));
127 if (is_bad_inode(inode
)) {
129 inode
= ERR_PTR(-ESTALE
);
130 mlog_errno(PTR_ERR(inode
));
135 if (!IS_ERR(inode
)) {
136 mlog(0, "returning inode with number %"MLFu64
"\n",
137 OCFS2_I(inode
)->ip_blkno
);
138 mlog_exit_ptr(inode
);
140 mlog_errno(PTR_ERR(inode
));
147 * here's how inodes get read from disk:
148 * iget5_locked -> find_actor -> OCFS2_FIND_ACTOR
149 * found? : return the in-memory inode
150 * not found? : get_new_inode -> OCFS2_INIT_LOCKED_INODE
153 static int ocfs2_find_actor(struct inode
*inode
, void *opaque
)
155 struct ocfs2_find_inode_args
*args
= NULL
;
156 struct ocfs2_inode_info
*oi
= OCFS2_I(inode
);
159 mlog_entry("(0x%p, %lu, 0x%p)\n", inode
, inode
->i_ino
, opaque
);
163 mlog_bug_on_msg(!inode
, "No inode in find actor!\n");
165 if (oi
->ip_blkno
!= args
->fi_blkno
)
168 /* OCFS2_FI_FLAG_NOWAIT is *only* set from
169 * ocfs2_ilookup_for_vote which won't create an inode for one
170 * that isn't found. The vote thread which doesn't want to get
171 * an inode which is in the process of going away - otherwise
172 * the call to __wait_on_freeing_inode in find_inode_fast will
173 * cause it to deadlock on an inode which may be waiting on a
174 * vote (or lock release) in delete_inode */
175 if ((args
->fi_flags
& OCFS2_FI_FLAG_NOWAIT
) &&
176 (inode
->i_state
& (I_FREEING
|I_CLEAR
))) {
177 /* As stated above, we're not going to return an
178 * inode. In the case of a delete vote, the voting
179 * code is going to signal the other node to go
180 * ahead. Mark that state here, so this freeing inode
181 * has the state when it gets to delete_inode. */
182 if (args
->fi_flags
& OCFS2_FI_FLAG_DELETE
) {
183 spin_lock(&oi
->ip_lock
);
184 ocfs2_mark_inode_remotely_deleted(inode
);
185 spin_unlock(&oi
->ip_lock
);
197 * initialize the new inode, but don't do anything that would cause
199 * return 0 on success, 1 on failure
201 static int ocfs2_init_locked_inode(struct inode
*inode
, void *opaque
)
203 struct ocfs2_find_inode_args
*args
= opaque
;
205 mlog_entry("inode = %p, opaque = %p\n", inode
, opaque
);
207 inode
->i_ino
= args
->fi_ino
;
208 OCFS2_I(inode
)->ip_blkno
= args
->fi_blkno
;
214 int ocfs2_populate_inode(struct inode
*inode
, struct ocfs2_dinode
*fe
,
217 struct super_block
*sb
;
218 struct ocfs2_super
*osb
;
219 int status
= -EINVAL
;
221 mlog_entry("(0x%p, size:%"MLFu64
")\n", inode
, fe
->i_size
);
226 /* this means that read_inode cannot create a superblock inode
227 * today. change if needed. */
228 if (!OCFS2_IS_VALID_DINODE(fe
) ||
229 !(fe
->i_flags
& cpu_to_le32(OCFS2_VALID_FL
))) {
230 mlog(ML_ERROR
, "Invalid dinode: i_ino=%lu, i_blkno=%"MLFu64
", "
231 "signature = %.*s, flags = 0x%x\n",
232 inode
->i_ino
, le64_to_cpu(fe
->i_blkno
), 7,
233 fe
->i_signature
, le32_to_cpu(fe
->i_flags
));
237 if (le32_to_cpu(fe
->i_fs_generation
) != osb
->fs_generation
) {
238 mlog(ML_ERROR
, "file entry generation does not match "
239 "superblock! osb->fs_generation=%x, "
240 "fe->i_fs_generation=%x\n",
241 osb
->fs_generation
, le32_to_cpu(fe
->i_fs_generation
));
245 inode
->i_version
= 1;
246 inode
->i_generation
= le32_to_cpu(fe
->i_generation
);
247 inode
->i_rdev
= huge_decode_dev(le64_to_cpu(fe
->id1
.dev1
.i_rdev
));
248 inode
->i_mode
= le16_to_cpu(fe
->i_mode
);
249 inode
->i_uid
= le32_to_cpu(fe
->i_uid
);
250 inode
->i_gid
= le32_to_cpu(fe
->i_gid
);
251 inode
->i_blksize
= (u32
)osb
->s_clustersize
;
253 /* Fast symlinks will have i_size but no allocated clusters. */
254 if (S_ISLNK(inode
->i_mode
) && !fe
->i_clusters
)
258 ocfs2_align_bytes_to_sectors(le64_to_cpu(fe
->i_size
));
259 inode
->i_mapping
->a_ops
= &ocfs2_aops
;
260 inode
->i_flags
|= S_NOATIME
;
261 inode
->i_atime
.tv_sec
= le64_to_cpu(fe
->i_atime
);
262 inode
->i_atime
.tv_nsec
= le32_to_cpu(fe
->i_atime_nsec
);
263 inode
->i_mtime
.tv_sec
= le64_to_cpu(fe
->i_mtime
);
264 inode
->i_mtime
.tv_nsec
= le32_to_cpu(fe
->i_mtime_nsec
);
265 inode
->i_ctime
.tv_sec
= le64_to_cpu(fe
->i_ctime
);
266 inode
->i_ctime
.tv_nsec
= le32_to_cpu(fe
->i_ctime_nsec
);
268 if (OCFS2_I(inode
)->ip_blkno
!= le64_to_cpu(fe
->i_blkno
))
270 "ip_blkno %"MLFu64
" != i_blkno %"MLFu64
"!\n",
271 OCFS2_I(inode
)->ip_blkno
, fe
->i_blkno
);
273 OCFS2_I(inode
)->ip_clusters
= le32_to_cpu(fe
->i_clusters
);
274 OCFS2_I(inode
)->ip_orphaned_slot
= OCFS2_INVALID_SLOT
;
277 inode
->i_ino
= ino_from_blkno(inode
->i_sb
,
278 le64_to_cpu(fe
->i_blkno
));
280 mlog(0, "blkno = %"MLFu64
", ino = %lu, create_ino = %s\n",
281 fe
->i_blkno
, inode
->i_ino
, create_ino
? "true" : "false");
283 inode
->i_nlink
= le16_to_cpu(fe
->i_links_count
);
285 if (fe
->i_flags
& cpu_to_le32(OCFS2_LOCAL_ALLOC_FL
)) {
286 OCFS2_I(inode
)->ip_flags
|= OCFS2_INODE_BITMAP
;
287 mlog(0, "local alloc inode: i_ino=%lu\n", inode
->i_ino
);
288 } else if (fe
->i_flags
& cpu_to_le32(OCFS2_BITMAP_FL
)) {
289 OCFS2_I(inode
)->ip_flags
|= OCFS2_INODE_BITMAP
;
290 } else if (fe
->i_flags
& cpu_to_le32(OCFS2_SUPER_BLOCK_FL
)) {
291 mlog(0, "superblock inode: i_ino=%lu\n", inode
->i_ino
);
292 /* we can't actually hit this as read_inode can't
293 * handle superblocks today ;-) */
297 switch (inode
->i_mode
& S_IFMT
) {
299 inode
->i_fop
= &ocfs2_fops
;
300 inode
->i_op
= &ocfs2_file_iops
;
301 i_size_write(inode
, le64_to_cpu(fe
->i_size
));
304 inode
->i_op
= &ocfs2_dir_iops
;
305 inode
->i_fop
= &ocfs2_dops
;
306 i_size_write(inode
, le64_to_cpu(fe
->i_size
));
309 if (ocfs2_inode_is_fast_symlink(inode
))
310 inode
->i_op
= &ocfs2_fast_symlink_inode_operations
;
312 inode
->i_op
= &ocfs2_symlink_inode_operations
;
313 i_size_write(inode
, le64_to_cpu(fe
->i_size
));
316 inode
->i_op
= &ocfs2_special_file_iops
;
317 init_special_inode(inode
, inode
->i_mode
,
322 ocfs2_inode_lock_res_init(&OCFS2_I(inode
)->ip_rw_lockres
,
323 OCFS2_LOCK_TYPE_RW
, inode
);
324 ocfs2_inode_lock_res_init(&OCFS2_I(inode
)->ip_meta_lockres
,
325 OCFS2_LOCK_TYPE_META
, inode
);
326 ocfs2_inode_lock_res_init(&OCFS2_I(inode
)->ip_data_lockres
,
327 OCFS2_LOCK_TYPE_DATA
, inode
);
335 static int ocfs2_read_locked_inode(struct inode
*inode
,
336 struct ocfs2_find_inode_args
*args
)
338 struct super_block
*sb
;
339 struct ocfs2_super
*osb
;
340 struct ocfs2_dinode
*fe
;
341 struct buffer_head
*bh
= NULL
;
345 mlog_entry("(0x%p, 0x%p)\n", inode
, args
);
348 if (inode
== NULL
|| inode
->i_sb
== NULL
) {
349 mlog(ML_ERROR
, "bad inode\n");
356 mlog(ML_ERROR
, "bad inode args\n");
357 make_bad_inode(inode
);
361 /* Read the FE off disk. This is safe because the kernel only
362 * does one read_inode2 for a new inode, and if it doesn't
363 * exist yet then nobody can be working on it! */
364 status
= ocfs2_read_block(osb
, args
->fi_blkno
, &bh
, 0, NULL
);
367 make_bad_inode(inode
);
371 fe
= (struct ocfs2_dinode
*) bh
->b_data
;
372 if (!OCFS2_IS_VALID_DINODE(fe
)) {
373 mlog(ML_ERROR
, "Invalid dinode #%"MLFu64
": signature = %.*s\n",
374 fe
->i_blkno
, 7, fe
->i_signature
);
375 make_bad_inode(inode
);
379 if (fe
->i_flags
& cpu_to_le32(OCFS2_SYSTEM_FL
))
382 if (S_ISCHR(le16_to_cpu(fe
->i_mode
)) ||
383 S_ISBLK(le16_to_cpu(fe
->i_mode
)))
384 inode
->i_rdev
= huge_decode_dev(le64_to_cpu(fe
->id1
.dev1
.i_rdev
));
387 if (ocfs2_populate_inode(inode
, fe
, 0) < 0) {
388 mlog(ML_ERROR
, "populate inode failed! i_blkno=%"MLFu64
", "
389 "i_ino=%lu\n", fe
->i_blkno
, inode
->i_ino
);
390 make_bad_inode(inode
);
394 BUG_ON(args
->fi_blkno
!= le64_to_cpu(fe
->i_blkno
));
397 OCFS2_I(inode
)->ip_flags
|= OCFS2_INODE_SYSTEM_FILE
;
409 void ocfs2_sync_blockdev(struct super_block
*sb
)
411 sync_blockdev(sb
->s_bdev
);
414 static int ocfs2_truncate_for_delete(struct ocfs2_super
*osb
,
416 struct buffer_head
*fe_bh
)
419 struct ocfs2_journal_handle
*handle
= NULL
;
420 struct ocfs2_truncate_context
*tc
= NULL
;
421 struct ocfs2_dinode
*fe
;
425 fe
= (struct ocfs2_dinode
*) fe_bh
->b_data
;
427 /* zero allocation, zero truncate :) */
431 handle
= ocfs2_start_trans(osb
, handle
, OCFS2_INODE_UPDATE_CREDITS
);
432 if (IS_ERR(handle
)) {
433 status
= PTR_ERR(handle
);
439 status
= ocfs2_set_inode_size(handle
, inode
, fe_bh
, 0ULL);
445 ocfs2_commit_trans(handle
);
448 status
= ocfs2_prepare_truncate(osb
, inode
, fe_bh
, &tc
);
454 status
= ocfs2_commit_truncate(osb
, inode
, fe_bh
, tc
);
461 ocfs2_commit_trans(handle
);
467 static int ocfs2_remove_inode(struct inode
*inode
,
468 struct buffer_head
*di_bh
,
469 struct inode
*orphan_dir_inode
,
470 struct buffer_head
*orphan_dir_bh
)
473 struct inode
*inode_alloc_inode
= NULL
;
474 struct buffer_head
*inode_alloc_bh
= NULL
;
475 struct ocfs2_journal_handle
*handle
;
476 struct ocfs2_super
*osb
= OCFS2_SB(inode
->i_sb
);
477 struct ocfs2_dinode
*di
= (struct ocfs2_dinode
*) di_bh
->b_data
;
480 ocfs2_get_system_file_inode(osb
, INODE_ALLOC_SYSTEM_INODE
,
481 le16_to_cpu(di
->i_suballoc_slot
));
482 if (!inode_alloc_inode
) {
488 mutex_lock(&inode_alloc_inode
->i_mutex
);
489 status
= ocfs2_meta_lock(inode_alloc_inode
, NULL
, &inode_alloc_bh
, 1);
491 mutex_unlock(&inode_alloc_inode
->i_mutex
);
497 handle
= ocfs2_start_trans(osb
, NULL
, OCFS2_DELETE_INODE_CREDITS
);
498 if (IS_ERR(handle
)) {
499 status
= PTR_ERR(handle
);
504 status
= ocfs2_orphan_del(osb
, handle
, orphan_dir_inode
, inode
,
511 /* set the inodes dtime */
512 status
= ocfs2_journal_access(handle
, inode
, di_bh
,
513 OCFS2_JOURNAL_ACCESS_WRITE
);
519 di
->i_dtime
= cpu_to_le64(CURRENT_TIME
.tv_sec
);
520 le32_and_cpu(&di
->i_flags
, ~(OCFS2_VALID_FL
| OCFS2_ORPHANED_FL
));
522 status
= ocfs2_journal_dirty(handle
, di_bh
);
528 ocfs2_remove_from_cache(inode
, di_bh
);
530 status
= ocfs2_free_dinode(handle
, inode_alloc_inode
,
536 ocfs2_commit_trans(handle
);
538 ocfs2_meta_unlock(inode_alloc_inode
, 1);
539 mutex_unlock(&inode_alloc_inode
->i_mutex
);
540 brelse(inode_alloc_bh
);
542 iput(inode_alloc_inode
);
547 static int ocfs2_wipe_inode(struct inode
*inode
,
548 struct buffer_head
*di_bh
)
550 int status
, orphaned_slot
;
551 struct inode
*orphan_dir_inode
= NULL
;
552 struct buffer_head
*orphan_dir_bh
= NULL
;
553 struct ocfs2_super
*osb
= OCFS2_SB(inode
->i_sb
);
555 /* We've already voted on this so it should be readonly - no
556 * spinlock needed. */
557 orphaned_slot
= OCFS2_I(inode
)->ip_orphaned_slot
;
558 orphan_dir_inode
= ocfs2_get_system_file_inode(osb
,
559 ORPHAN_DIR_SYSTEM_INODE
,
561 if (!orphan_dir_inode
) {
567 /* Lock the orphan dir. The lock will be held for the entire
568 * delete_inode operation. We do this now to avoid races with
569 * recovery completion on other nodes. */
570 mutex_lock(&orphan_dir_inode
->i_mutex
);
571 status
= ocfs2_meta_lock(orphan_dir_inode
, NULL
, &orphan_dir_bh
, 1);
573 mutex_unlock(&orphan_dir_inode
->i_mutex
);
579 /* we do this while holding the orphan dir lock because we
580 * don't want recovery being run from another node to vote for
581 * an inode delete on us -- this will result in two nodes
582 * truncating the same file! */
583 status
= ocfs2_truncate_for_delete(osb
, inode
, di_bh
);
586 goto bail_unlock_dir
;
589 status
= ocfs2_remove_inode(inode
, di_bh
, orphan_dir_inode
,
595 ocfs2_meta_unlock(orphan_dir_inode
, 1);
596 mutex_unlock(&orphan_dir_inode
->i_mutex
);
597 brelse(orphan_dir_bh
);
599 iput(orphan_dir_inode
);
604 /* There is a series of simple checks that should be done before a
605 * vote is even considered. Encapsulate those in this function. */
606 static int ocfs2_inode_is_valid_to_delete(struct inode
*inode
)
609 struct ocfs2_inode_info
*oi
= OCFS2_I(inode
);
610 struct ocfs2_super
*osb
= OCFS2_SB(inode
->i_sb
);
612 /* We shouldn't be getting here for the root directory
614 if (inode
== osb
->root_inode
) {
615 mlog(ML_ERROR
, "Skipping delete of root inode.\n");
619 /* If we're coming from process_vote we can't go into our own
620 * voting [hello, deadlock city!], so unforuntately we just
621 * have to skip deleting this guy. That's OK though because
622 * the node who's doing the actual deleting should handle it
624 if (current
== osb
->vote_task
) {
625 mlog(0, "Skipping delete of %lu because we're currently "
626 "in process_vote\n", inode
->i_ino
);
630 spin_lock(&oi
->ip_lock
);
631 /* OCFS2 *never* deletes system files. This should technically
632 * never get here as system file inodes should always have a
633 * positive link count. */
634 if (oi
->ip_flags
& OCFS2_INODE_SYSTEM_FILE
) {
635 mlog(ML_ERROR
, "Skipping delete of system file %"MLFu64
".\n",
640 /* If we have voted "yes" on the wipe of this inode for
641 * another node, it will be marked here so we can safely skip
642 * it. Recovery will cleanup any inodes we might inadvertantly
644 if (oi
->ip_flags
& OCFS2_INODE_SKIP_DELETE
) {
645 mlog(0, "Skipping delete of %lu because another node "
646 "has done this for us.\n", inode
->i_ino
);
652 spin_unlock(&oi
->ip_lock
);
657 /* Query the cluster to determine whether we should wipe an inode from
660 * Requires the inode to have the cluster lock. */
661 static int ocfs2_query_inode_wipe(struct inode
*inode
,
662 struct buffer_head
*di_bh
,
666 struct ocfs2_inode_info
*oi
= OCFS2_I(inode
);
667 struct ocfs2_dinode
*di
;
671 /* While we were waiting for the cluster lock in
672 * ocfs2_delete_inode, another node might have asked to delete
673 * the inode. Recheck our flags to catch this. */
674 if (!ocfs2_inode_is_valid_to_delete(inode
)) {
675 mlog(0, "Skipping delete of %"MLFu64
" because flags changed\n",
680 /* Now that we have an up to date inode, we can double check
682 if (inode
->i_nlink
) {
683 mlog(0, "Skipping delete of %"MLFu64
" because nlink = %u\n",
684 oi
->ip_blkno
, inode
->i_nlink
);
688 /* Do some basic inode verification... */
689 di
= (struct ocfs2_dinode
*) di_bh
->b_data
;
690 if (!(di
->i_flags
& cpu_to_le32(OCFS2_ORPHANED_FL
))) {
691 /* for lack of a better error? */
694 "Inode %"MLFu64
" (on-disk %"MLFu64
") not orphaned! "
695 "Disk flags 0x%x, inode flags 0x%x\n",
696 oi
->ip_blkno
, di
->i_blkno
, di
->i_flags
, oi
->ip_flags
);
700 /* has someone already deleted us?! baaad... */
707 status
= ocfs2_request_delete_vote(inode
);
708 /* -EBUSY means that other nodes are still using the
709 * inode. We're done here though, so avoid doing anything on
710 * disk and let them worry about deleting it. */
711 if (status
== -EBUSY
) {
713 mlog(0, "Skipping delete of %"MLFu64
" because it is in use on"
714 "other nodes\n", oi
->ip_blkno
);
722 spin_lock(&oi
->ip_lock
);
723 if (oi
->ip_orphaned_slot
== OCFS2_INVALID_SLOT
) {
724 /* Nobody knew which slot this inode was orphaned
725 * into. This may happen during node death and
726 * recovery knows how to clean it up so we can safely
727 * ignore this inode for now on. */
728 mlog(0, "Nobody knew where inode %"MLFu64
" was orphaned!\n",
733 mlog(0, "Inode %"MLFu64
" is ok to wipe from orphan dir %d\n",
734 oi
->ip_blkno
, oi
->ip_orphaned_slot
);
736 spin_unlock(&oi
->ip_lock
);
742 /* Support function for ocfs2_delete_inode. Will help us keep the
743 * inode data in a consistent state for clear_inode. Always truncates
744 * pages, optionally sync's them first. */
745 static void ocfs2_cleanup_delete_inode(struct inode
*inode
,
748 mlog(0, "Cleanup inode %"MLFu64
", sync = %d\n",
749 OCFS2_I(inode
)->ip_blkno
, sync_data
);
751 write_inode_now(inode
, 1);
752 truncate_inode_pages(&inode
->i_data
, 0);
755 void ocfs2_delete_inode(struct inode
*inode
)
758 sigset_t blocked
, oldset
;
759 struct buffer_head
*di_bh
= NULL
;
761 mlog_entry("(inode->i_ino = %lu)\n", inode
->i_ino
);
763 if (is_bad_inode(inode
)) {
764 mlog(0, "Skipping delete of bad inode\n");
768 if (!ocfs2_inode_is_valid_to_delete(inode
)) {
769 /* It's probably not necessary to truncate_inode_pages
770 * here but we do it for safety anyway (it will most
771 * likely be a no-op anyway) */
772 ocfs2_cleanup_delete_inode(inode
, 0);
776 /* We want to block signals in delete_inode as the lock and
777 * messaging paths may return us -ERESTARTSYS. Which would
778 * cause us to exit early, resulting in inodes being orphaned
780 sigfillset(&blocked
);
781 status
= sigprocmask(SIG_BLOCK
, &blocked
, &oldset
);
784 ocfs2_cleanup_delete_inode(inode
, 1);
788 /* Lock down the inode. This gives us an up to date view of
789 * it's metadata (for verification), and allows us to
790 * serialize delete_inode votes.
792 * Even though we might be doing a truncate, we don't take the
793 * allocation lock here as it won't be needed - nobody will
794 * have the file open.
796 status
= ocfs2_meta_lock(inode
, NULL
, &di_bh
, 1);
798 if (status
!= -ENOENT
)
800 ocfs2_cleanup_delete_inode(inode
, 0);
804 /* Query the cluster. This will be the final decision made
805 * before we go ahead and wipe the inode. */
806 status
= ocfs2_query_inode_wipe(inode
, di_bh
, &wipe
);
807 if (!wipe
|| status
< 0) {
808 /* Error and inode busy vote both mean we won't be
809 * removing the inode, so they take almost the same
814 /* Someone in the cluster has voted to not wipe this
815 * inode, or it was never completely orphaned. Write
816 * out the pages and exit now. */
817 ocfs2_cleanup_delete_inode(inode
, 1);
818 goto bail_unlock_inode
;
821 ocfs2_cleanup_delete_inode(inode
, 0);
823 status
= ocfs2_wipe_inode(inode
, di_bh
);
826 goto bail_unlock_inode
;
829 /* Mark the inode as successfully deleted. This is important
830 * for ocfs2_clear_inode as it will check this flag and skip
831 * any checkpointing work */
832 OCFS2_I(inode
)->ip_flags
|= OCFS2_INODE_DELETED
;
835 ocfs2_meta_unlock(inode
, 1);
838 status
= sigprocmask(SIG_SETMASK
, &oldset
, NULL
);
846 void ocfs2_clear_inode(struct inode
*inode
)
849 struct ocfs2_inode_info
*oi
= OCFS2_I(inode
);
856 mlog(0, "Clearing inode: %"MLFu64
", nlink = %u\n",
857 OCFS2_I(inode
)->ip_blkno
, inode
->i_nlink
);
859 mlog_bug_on_msg(OCFS2_SB(inode
->i_sb
) == NULL
,
860 "Inode=%lu\n", inode
->i_ino
);
862 /* Do these before all the other work so that we don't bounce
863 * the vote thread while waiting to destroy the locks. */
864 ocfs2_mark_lockres_freeing(&oi
->ip_rw_lockres
);
865 ocfs2_mark_lockres_freeing(&oi
->ip_meta_lockres
);
866 ocfs2_mark_lockres_freeing(&oi
->ip_data_lockres
);
868 /* We very well may get a clear_inode before all an inodes
869 * metadata has hit disk. Of course, we can't drop any cluster
870 * locks until the journal has finished with it. The only
871 * exception here are successfully wiped inodes - their
872 * metadata can now be considered to be part of the system
873 * inodes from which it came. */
874 if (!(OCFS2_I(inode
)->ip_flags
& OCFS2_INODE_DELETED
))
875 ocfs2_checkpoint_inode(inode
);
877 mlog_bug_on_msg(!list_empty(&oi
->ip_io_markers
),
878 "Clear inode of %"MLFu64
", inode has io markers\n",
881 ocfs2_extent_map_drop(inode
, 0);
882 ocfs2_extent_map_init(inode
);
884 status
= ocfs2_drop_inode_locks(inode
);
888 ocfs2_lock_res_free(&oi
->ip_rw_lockres
);
889 ocfs2_lock_res_free(&oi
->ip_meta_lockres
);
890 ocfs2_lock_res_free(&oi
->ip_data_lockres
);
892 ocfs2_metadata_cache_purge(inode
);
894 mlog_bug_on_msg(oi
->ip_metadata_cache
.ci_num_cached
,
895 "Clear inode of %"MLFu64
", inode has %u cache items\n",
896 oi
->ip_blkno
, oi
->ip_metadata_cache
.ci_num_cached
);
898 mlog_bug_on_msg(!(oi
->ip_flags
& OCFS2_INODE_CACHE_INLINE
),
899 "Clear inode of %"MLFu64
", inode has a bad flag\n",
902 mlog_bug_on_msg(spin_is_locked(&oi
->ip_lock
),
903 "Clear inode of %"MLFu64
", inode is locked\n",
906 mlog_bug_on_msg(down_trylock(&oi
->ip_io_sem
),
907 "Clear inode of %"MLFu64
", io_sem is locked\n",
912 * down_trylock() returns 0, down_write_trylock() returns 1
915 mlog_bug_on_msg(!down_write_trylock(&oi
->ip_alloc_sem
),
916 "Clear inode of %"MLFu64
", alloc_sem is locked\n",
918 up_write(&oi
->ip_alloc_sem
);
920 mlog_bug_on_msg(oi
->ip_open_count
,
921 "Clear inode of %"MLFu64
" has open count %d\n",
922 oi
->ip_blkno
, oi
->ip_open_count
);
923 mlog_bug_on_msg(!list_empty(&oi
->ip_handle_list
),
924 "Clear inode of %"MLFu64
" has non empty handle list\n",
926 mlog_bug_on_msg(oi
->ip_handle
,
927 "Clear inode of %"MLFu64
" has non empty handle pointer\n",
930 /* Clear all other flags. */
931 oi
->ip_flags
= OCFS2_INODE_CACHE_INLINE
;
932 oi
->ip_created_trans
= 0;
933 oi
->ip_last_trans
= 0;
934 oi
->ip_dir_start_lookup
= 0;
941 /* Called under inode_lock, with no more references on the
942 * struct inode, so it's safe here to check the flags field
943 * and to manipulate i_nlink without any other locks. */
944 void ocfs2_drop_inode(struct inode
*inode
)
946 struct ocfs2_inode_info
*oi
= OCFS2_I(inode
);
950 mlog(0, "Drop inode %"MLFu64
", nlink = %u, ip_flags = 0x%x\n",
951 oi
->ip_blkno
, inode
->i_nlink
, oi
->ip_flags
);
953 /* Testing ip_orphaned_slot here wouldn't work because we may
954 * not have gotten a delete_inode vote from any other nodes
956 if (oi
->ip_flags
& OCFS2_INODE_MAYBE_ORPHANED
) {
957 mlog(0, "Inode was orphaned on another node, clearing nlink.\n");
961 generic_drop_inode(inode
);
967 * TODO: this should probably be merged into ocfs2_get_block
969 * However, you now need to pay attention to the cont_prepare_write()
970 * stuff in ocfs2_get_block (that is, ocfs2_get_block pretty much
971 * expects never to extend).
973 struct buffer_head
*ocfs2_bread(struct inode
*inode
,
974 int block
, int *err
, int reada
)
976 struct buffer_head
*bh
= NULL
;
979 int readflags
= OCFS2_BH_CACHED
;
982 /* only turn this on if we know we can deal with read_block
983 * returning nothing */
985 readflags
|= OCFS2_BH_READAHEAD
;
988 if (((u64
)block
<< inode
->i_sb
->s_blocksize_bits
) >=
989 i_size_read(inode
)) {
994 tmperr
= ocfs2_extent_map_get_blocks(inode
, block
, 1,
1001 tmperr
= ocfs2_read_block(OCFS2_SB(inode
->i_sb
), p_blkno
, &bh
,
1021 * This is called from our getattr.
1023 int ocfs2_inode_revalidate(struct dentry
*dentry
)
1025 struct inode
*inode
= dentry
->d_inode
;
1028 mlog_entry("(inode = 0x%p, ino = %"MLFu64
")\n", inode
,
1029 inode
? OCFS2_I(inode
)->ip_blkno
: 0ULL);
1032 mlog(0, "eep, no inode!\n");
1037 spin_lock(&OCFS2_I(inode
)->ip_lock
);
1038 if (OCFS2_I(inode
)->ip_flags
& OCFS2_INODE_DELETED
) {
1039 spin_unlock(&OCFS2_I(inode
)->ip_lock
);
1040 mlog(0, "inode deleted!\n");
1044 spin_unlock(&OCFS2_I(inode
)->ip_lock
);
1046 /* Let ocfs2_meta_lock do the work of updating our struct
1048 status
= ocfs2_meta_lock(inode
, NULL
, NULL
, 0);
1050 if (status
!= -ENOENT
)
1054 ocfs2_meta_unlock(inode
, 0);
1062 * Updates a disk inode from a
1064 * Only takes ip_lock.
1066 int ocfs2_mark_inode_dirty(struct ocfs2_journal_handle
*handle
,
1067 struct inode
*inode
,
1068 struct buffer_head
*bh
)
1071 struct ocfs2_dinode
*fe
= (struct ocfs2_dinode
*) bh
->b_data
;
1073 mlog_entry("(inode %"MLFu64
")\n", OCFS2_I(inode
)->ip_blkno
);
1075 status
= ocfs2_journal_access(handle
, inode
, bh
,
1076 OCFS2_JOURNAL_ACCESS_WRITE
);
1082 spin_lock(&OCFS2_I(inode
)->ip_lock
);
1083 fe
->i_clusters
= cpu_to_le32(OCFS2_I(inode
)->ip_clusters
);
1084 spin_unlock(&OCFS2_I(inode
)->ip_lock
);
1086 fe
->i_size
= cpu_to_le64(i_size_read(inode
));
1087 fe
->i_links_count
= cpu_to_le16(inode
->i_nlink
);
1088 fe
->i_uid
= cpu_to_le32(inode
->i_uid
);
1089 fe
->i_gid
= cpu_to_le32(inode
->i_gid
);
1090 fe
->i_mode
= cpu_to_le16(inode
->i_mode
);
1091 fe
->i_atime
= cpu_to_le64(inode
->i_atime
.tv_sec
);
1092 fe
->i_atime_nsec
= cpu_to_le32(inode
->i_atime
.tv_nsec
);
1093 fe
->i_ctime
= cpu_to_le64(inode
->i_ctime
.tv_sec
);
1094 fe
->i_ctime_nsec
= cpu_to_le32(inode
->i_ctime
.tv_nsec
);
1095 fe
->i_mtime
= cpu_to_le64(inode
->i_mtime
.tv_sec
);
1096 fe
->i_mtime_nsec
= cpu_to_le32(inode
->i_mtime
.tv_nsec
);
1098 status
= ocfs2_journal_dirty(handle
, bh
);
1111 * Updates a struct inode from a disk inode.
1112 * does no i/o, only takes ip_lock.
1114 void ocfs2_refresh_inode(struct inode
*inode
,
1115 struct ocfs2_dinode
*fe
)
1117 struct ocfs2_super
*osb
= OCFS2_SB(inode
->i_sb
);
1119 spin_lock(&OCFS2_I(inode
)->ip_lock
);
1121 OCFS2_I(inode
)->ip_clusters
= le32_to_cpu(fe
->i_clusters
);
1122 i_size_write(inode
, le64_to_cpu(fe
->i_size
));
1123 inode
->i_nlink
= le16_to_cpu(fe
->i_links_count
);
1124 inode
->i_uid
= le32_to_cpu(fe
->i_uid
);
1125 inode
->i_gid
= le32_to_cpu(fe
->i_gid
);
1126 inode
->i_mode
= le16_to_cpu(fe
->i_mode
);
1127 inode
->i_blksize
= (u32
) osb
->s_clustersize
;
1128 if (S_ISLNK(inode
->i_mode
) && le32_to_cpu(fe
->i_clusters
) == 0)
1129 inode
->i_blocks
= 0;
1131 inode
->i_blocks
= ocfs2_align_bytes_to_sectors(i_size_read(inode
));
1132 inode
->i_atime
.tv_sec
= le64_to_cpu(fe
->i_atime
);
1133 inode
->i_atime
.tv_nsec
= le32_to_cpu(fe
->i_atime_nsec
);
1134 inode
->i_mtime
.tv_sec
= le64_to_cpu(fe
->i_mtime
);
1135 inode
->i_mtime
.tv_nsec
= le32_to_cpu(fe
->i_mtime_nsec
);
1136 inode
->i_ctime
.tv_sec
= le64_to_cpu(fe
->i_ctime
);
1137 inode
->i_ctime
.tv_nsec
= le32_to_cpu(fe
->i_ctime_nsec
);
1139 spin_unlock(&OCFS2_I(inode
)->ip_lock
);