2 * Copyright (c) 2000-2006 Silicon Graphics, Inc.
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
7 * published by the Free Software Foundation.
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.
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
21 #include "xfs_types.h"
25 #include "xfs_trans.h"
29 #include "xfs_dmapi.h"
30 #include "xfs_mount.h"
31 #include "xfs_da_btree.h"
32 #include "xfs_bmap_btree.h"
33 #include "xfs_alloc_btree.h"
34 #include "xfs_ialloc_btree.h"
35 #include "xfs_dir2_sf.h"
36 #include "xfs_attr_sf.h"
37 #include "xfs_dinode.h"
38 #include "xfs_inode.h"
39 #include "xfs_inode_item.h"
40 #include "xfs_itable.h"
41 #include "xfs_btree.h"
42 #include "xfs_ialloc.h"
43 #include "xfs_alloc.h"
48 #include "xfs_error.h"
49 #include "xfs_quota.h"
50 #include "xfs_utils.h"
51 #include "xfs_rtalloc.h"
52 #include "xfs_trans_space.h"
53 #include "xfs_log_priv.h"
54 #include "xfs_filestream.h"
55 #include "xfs_vnodeops.h"
63 xfs_mount_t
*mp
= ip
->i_mount
;
64 struct inode
*inode
= VFS_I(ip
);
65 int mask
= iattr
->ia_valid
;
72 struct xfs_dquot
*udqp
, *gdqp
, *olddquot1
, *olddquot2
;
77 if (mp
->m_flags
& XFS_MOUNT_RDONLY
)
78 return XFS_ERROR(EROFS
);
80 if (XFS_FORCED_SHUTDOWN(mp
))
81 return XFS_ERROR(EIO
);
83 code
= -inode_change_ok(inode
, iattr
);
87 olddquot1
= olddquot2
= NULL
;
91 * If disk quotas is on, we make sure that the dquots do exist on disk,
92 * before we start any other transactions. Trying to do this later
93 * is messy. We don't care to take a readlock to look at the ids
94 * in inode here, because we can't hold it across the trans_reserve.
95 * If the IDs do change before we take the ilock, we're covered
96 * because the i_*dquot fields will get updated anyway.
98 if (XFS_IS_QUOTA_ON(mp
) && (mask
& (ATTR_UID
|ATTR_GID
))) {
101 if ((mask
& ATTR_UID
) && XFS_IS_UQUOTA_ON(mp
)) {
103 qflags
|= XFS_QMOPT_UQUOTA
;
105 uid
= ip
->i_d
.di_uid
;
107 if ((mask
& ATTR_GID
) && XFS_IS_GQUOTA_ON(mp
)) {
109 qflags
|= XFS_QMOPT_GQUOTA
;
111 gid
= ip
->i_d
.di_gid
;
115 * We take a reference when we initialize udqp and gdqp,
116 * so it is important that we never blindly double trip on
117 * the same variable. See xfs_create() for an example.
119 ASSERT(udqp
== NULL
);
120 ASSERT(gdqp
== NULL
);
121 code
= xfs_qm_vop_dqalloc(ip
, uid
, gid
, ip
->i_d
.di_projid
,
122 qflags
, &udqp
, &gdqp
);
128 * For the other attributes, we acquire the inode lock and
129 * first do an error checking pass.
132 lock_flags
= XFS_ILOCK_EXCL
;
133 if (flags
& XFS_ATTR_NOLOCK
)
135 if (!(mask
& ATTR_SIZE
)) {
136 tp
= xfs_trans_alloc(mp
, XFS_TRANS_SETATTR_NOT_SIZE
);
138 code
= xfs_trans_reserve(tp
, 0, XFS_ICHANGE_LOG_RES(mp
),
145 if (DM_EVENT_ENABLED(ip
, DM_EVENT_TRUNCATE
) &&
146 !(flags
& XFS_ATTR_DMI
)) {
147 int dmflags
= AT_DELAY_FLAG(flags
) | DM_SEM_FLAG_WR
;
148 code
= XFS_SEND_DATA(mp
, DM_EVENT_TRUNCATE
, ip
,
149 iattr
->ia_size
, 0, dmflags
, NULL
);
156 lock_flags
|= XFS_IOLOCK_EXCL
;
159 xfs_ilock(ip
, lock_flags
);
162 * Change file ownership. Must be the owner or privileged.
164 if (mask
& (ATTR_UID
|ATTR_GID
)) {
166 * These IDs could have changed since we last looked at them.
167 * But, we're assured that if the ownership did change
168 * while we didn't have the inode locked, inode's dquot(s)
169 * would have changed also.
171 iuid
= ip
->i_d
.di_uid
;
172 igid
= ip
->i_d
.di_gid
;
173 gid
= (mask
& ATTR_GID
) ? iattr
->ia_gid
: igid
;
174 uid
= (mask
& ATTR_UID
) ? iattr
->ia_uid
: iuid
;
177 * Do a quota reservation only if uid/gid is actually
180 if (XFS_IS_QUOTA_RUNNING(mp
) &&
181 ((XFS_IS_UQUOTA_ON(mp
) && iuid
!= uid
) ||
182 (XFS_IS_GQUOTA_ON(mp
) && igid
!= gid
))) {
184 code
= xfs_qm_vop_chown_reserve(tp
, ip
, udqp
, gdqp
,
185 capable(CAP_FOWNER
) ?
186 XFS_QMOPT_FORCE_RES
: 0);
187 if (code
) /* out of quota */
193 * Truncate file. Must have write permission and not be a directory.
195 if (mask
& ATTR_SIZE
) {
196 /* Short circuit the truncate case for zero length files */
197 if (iattr
->ia_size
== 0 &&
198 ip
->i_size
== 0 && ip
->i_d
.di_nextents
== 0) {
199 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
200 lock_flags
&= ~XFS_ILOCK_EXCL
;
201 if (mask
& ATTR_CTIME
)
202 xfs_ichgtime(ip
, XFS_ICHGTIME_MOD
| XFS_ICHGTIME_CHG
);
207 if (S_ISDIR(ip
->i_d
.di_mode
)) {
208 code
= XFS_ERROR(EISDIR
);
210 } else if (!S_ISREG(ip
->i_d
.di_mode
)) {
211 code
= XFS_ERROR(EINVAL
);
216 * Make sure that the dquots are attached to the inode.
218 code
= xfs_qm_dqattach_locked(ip
, 0);
223 * Now we can make the changes. Before we join the inode
224 * to the transaction, if ATTR_SIZE is set then take care of
225 * the part of the truncation that must be done without the
226 * inode lock. This needs to be done before joining the inode
227 * to the transaction, because the inode cannot be unlocked
228 * once it is a part of the transaction.
230 if (iattr
->ia_size
> ip
->i_size
) {
232 * Do the first part of growing a file: zero any data
233 * in the last block that is beyond the old EOF. We
234 * need to do this before the inode is joined to the
235 * transaction to modify the i_size.
237 code
= xfs_zero_eof(ip
, iattr
->ia_size
, ip
->i_size
);
239 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
242 * We are going to log the inode size change in this
243 * transaction so any previous writes that are beyond the on
244 * disk EOF and the new EOF that have not been written out need
245 * to be written here. If we do not write the data out, we
246 * expose ourselves to the null files problem.
248 * Only flush from the on disk size to the smaller of the in
249 * memory file size or the new size as that's the range we
250 * really care about here and prevents waiting for other data
251 * not within the range we care about here.
254 ip
->i_size
!= ip
->i_d
.di_size
&&
255 iattr
->ia_size
> ip
->i_d
.di_size
) {
256 code
= xfs_flush_pages(ip
,
257 ip
->i_d
.di_size
, iattr
->ia_size
,
258 XFS_B_ASYNC
, FI_NONE
);
261 /* wait for all I/O to complete */
265 code
= xfs_itruncate_data(ip
, iattr
->ia_size
);
268 lock_flags
&= ~XFS_ILOCK_EXCL
;
269 ASSERT(lock_flags
== XFS_IOLOCK_EXCL
);
272 tp
= xfs_trans_alloc(mp
, XFS_TRANS_SETATTR_SIZE
);
273 if ((code
= xfs_trans_reserve(tp
, 0,
274 XFS_ITRUNCATE_LOG_RES(mp
), 0,
275 XFS_TRANS_PERM_LOG_RES
,
276 XFS_ITRUNCATE_LOG_COUNT
))) {
277 xfs_trans_cancel(tp
, 0);
279 xfs_iunlock(ip
, XFS_IOLOCK_EXCL
);
282 commit_flags
= XFS_TRANS_RELEASE_LOG_RES
;
283 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
285 xfs_trans_ijoin(tp
, ip
, lock_flags
);
286 xfs_trans_ihold(tp
, ip
);
289 * Only change the c/mtime if we are changing the size
290 * or we are explicitly asked to change it. This handles
291 * the semantic difference between truncate() and ftruncate()
292 * as implemented in the VFS.
294 * The regular truncate() case without ATTR_CTIME and ATTR_MTIME
295 * is a special case where we need to update the times despite
296 * not having these flags set. For all other operations the
297 * VFS set these flags explicitly if it wants a timestamp
300 if (iattr
->ia_size
!= ip
->i_size
&&
301 (!(mask
& (ATTR_CTIME
| ATTR_MTIME
)))) {
302 iattr
->ia_ctime
= iattr
->ia_mtime
=
303 current_fs_time(inode
->i_sb
);
304 mask
|= ATTR_CTIME
| ATTR_MTIME
;
307 if (iattr
->ia_size
> ip
->i_size
) {
308 ip
->i_d
.di_size
= iattr
->ia_size
;
309 ip
->i_size
= iattr
->ia_size
;
310 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
311 } else if (iattr
->ia_size
<= ip
->i_size
||
312 (iattr
->ia_size
== 0 && ip
->i_d
.di_nextents
)) {
314 * signal a sync transaction unless
315 * we're truncating an already unlinked
316 * file on a wsync filesystem
318 code
= xfs_itruncate_finish(&tp
, ip
, iattr
->ia_size
,
320 ((ip
->i_d
.di_nlink
!= 0 ||
321 !(mp
->m_flags
& XFS_MOUNT_WSYNC
))
326 * Truncated "down", so we're removing references
327 * to old data here - if we now delay flushing for
328 * a long time, we expose ourselves unduly to the
329 * notorious NULL files problem. So, we mark this
330 * vnode and flush it when the file is closed, and
331 * do not wait the usual (long) time for writeout.
333 xfs_iflags_set(ip
, XFS_ITRUNCATED
);
336 xfs_trans_ijoin(tp
, ip
, lock_flags
);
337 xfs_trans_ihold(tp
, ip
);
341 * Change file ownership. Must be the owner or privileged.
343 if (mask
& (ATTR_UID
|ATTR_GID
)) {
345 * CAP_FSETID overrides the following restrictions:
347 * The set-user-ID and set-group-ID bits of a file will be
348 * cleared upon successful return from chown()
350 if ((ip
->i_d
.di_mode
& (S_ISUID
|S_ISGID
)) &&
351 !capable(CAP_FSETID
)) {
352 ip
->i_d
.di_mode
&= ~(S_ISUID
|S_ISGID
);
356 * Change the ownerships and register quota modifications
357 * in the transaction.
360 if (XFS_IS_QUOTA_RUNNING(mp
) && XFS_IS_UQUOTA_ON(mp
)) {
361 ASSERT(mask
& ATTR_UID
);
363 olddquot1
= xfs_qm_vop_chown(tp
, ip
,
364 &ip
->i_udquot
, udqp
);
366 ip
->i_d
.di_uid
= uid
;
370 if (XFS_IS_QUOTA_RUNNING(mp
) && XFS_IS_GQUOTA_ON(mp
)) {
371 ASSERT(!XFS_IS_PQUOTA_ON(mp
));
372 ASSERT(mask
& ATTR_GID
);
374 olddquot2
= xfs_qm_vop_chown(tp
, ip
,
375 &ip
->i_gdquot
, gdqp
);
377 ip
->i_d
.di_gid
= gid
;
383 * Change file access modes.
385 if (mask
& ATTR_MODE
) {
386 umode_t mode
= iattr
->ia_mode
;
388 if (!in_group_p(inode
->i_gid
) && !capable(CAP_FSETID
))
391 ip
->i_d
.di_mode
&= S_IFMT
;
392 ip
->i_d
.di_mode
|= mode
& ~S_IFMT
;
394 inode
->i_mode
&= S_IFMT
;
395 inode
->i_mode
|= mode
& ~S_IFMT
;
399 * Change file access or modified times.
401 if (mask
& ATTR_ATIME
) {
402 inode
->i_atime
= iattr
->ia_atime
;
403 ip
->i_d
.di_atime
.t_sec
= iattr
->ia_atime
.tv_sec
;
404 ip
->i_d
.di_atime
.t_nsec
= iattr
->ia_atime
.tv_nsec
;
405 ip
->i_update_core
= 1;
407 if (mask
& ATTR_CTIME
) {
408 inode
->i_ctime
= iattr
->ia_ctime
;
409 ip
->i_d
.di_ctime
.t_sec
= iattr
->ia_ctime
.tv_sec
;
410 ip
->i_d
.di_ctime
.t_nsec
= iattr
->ia_ctime
.tv_nsec
;
411 ip
->i_update_core
= 1;
413 if (mask
& ATTR_MTIME
) {
414 inode
->i_mtime
= iattr
->ia_mtime
;
415 ip
->i_d
.di_mtime
.t_sec
= iattr
->ia_mtime
.tv_sec
;
416 ip
->i_d
.di_mtime
.t_nsec
= iattr
->ia_mtime
.tv_nsec
;
417 ip
->i_update_core
= 1;
421 * And finally, log the inode core if any attribute in it
424 if (mask
& (ATTR_UID
|ATTR_GID
|ATTR_MODE
|
425 ATTR_ATIME
|ATTR_CTIME
|ATTR_MTIME
))
426 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
428 XFS_STATS_INC(xs_ig_attrchg
);
431 * If this is a synchronous mount, make sure that the
432 * transaction goes to disk before returning to the user.
433 * This is slightly sub-optimal in that truncates require
434 * two sync transactions instead of one for wsync filesystems.
435 * One for the truncate and one for the timestamps since we
436 * don't want to change the timestamps unless we're sure the
437 * truncate worked. Truncates are less than 1% of the laddis
438 * mix so this probably isn't worth the trouble to optimize.
441 if (mp
->m_flags
& XFS_MOUNT_WSYNC
)
442 xfs_trans_set_sync(tp
);
444 code
= xfs_trans_commit(tp
, commit_flags
);
446 xfs_iunlock(ip
, lock_flags
);
449 * Release any dquot(s) the inode had kept before chown.
451 xfs_qm_dqrele(olddquot1
);
452 xfs_qm_dqrele(olddquot2
);
460 * XXX(hch): Updating the ACL entries is not atomic vs the i_mode
461 * update. We could avoid this with linked transactions
462 * and passing down the transaction pointer all the way
463 * to attr_set. No previous user of the generic
464 * Posix ACL code seems to care about this issue either.
466 if ((mask
& ATTR_MODE
) && !(flags
& XFS_ATTR_NOACL
)) {
467 code
= -xfs_acl_chmod(inode
);
469 return XFS_ERROR(code
);
472 if (DM_EVENT_ENABLED(ip
, DM_EVENT_ATTRIBUTE
) &&
473 !(flags
& XFS_ATTR_DMI
)) {
474 (void) XFS_SEND_NAMESP(mp
, DM_EVENT_ATTRIBUTE
, ip
, DM_RIGHT_NULL
,
475 NULL
, DM_RIGHT_NULL
, NULL
, NULL
,
476 0, 0, AT_DELAY_FLAG(flags
));
481 commit_flags
|= XFS_TRANS_ABORT
;
487 xfs_trans_cancel(tp
, commit_flags
);
489 if (lock_flags
!= 0) {
490 xfs_iunlock(ip
, lock_flags
);
496 * The maximum pathlen is 1024 bytes. Since the minimum file system
497 * blocksize is 512 bytes, we can get a max of 2 extents back from
500 #define SYMLINK_MAPS 2
507 xfs_mount_t
*mp
= ip
->i_mount
;
508 int pathlen
= ip
->i_d
.di_size
;
509 int nmaps
= SYMLINK_MAPS
;
510 xfs_bmbt_irec_t mval
[SYMLINK_MAPS
];
517 error
= xfs_bmapi(NULL
, ip
, 0, XFS_B_TO_FSB(mp
, pathlen
), 0, NULL
, 0,
518 mval
, &nmaps
, NULL
, NULL
);
522 for (n
= 0; n
< nmaps
; n
++) {
523 d
= XFS_FSB_TO_DADDR(mp
, mval
[n
].br_startblock
);
524 byte_cnt
= XFS_FSB_TO_B(mp
, mval
[n
].br_blockcount
);
526 bp
= xfs_buf_read_flags(mp
->m_ddev_targp
, d
, BTOBB(byte_cnt
),
527 XBF_LOCK
| XBF_MAPPED
|
529 error
= XFS_BUF_GETERROR(bp
);
531 xfs_ioerror_alert("xfs_readlink",
532 ip
->i_mount
, bp
, XFS_BUF_ADDR(bp
));
536 if (pathlen
< byte_cnt
)
540 memcpy(link
, XFS_BUF_PTR(bp
), byte_cnt
);
544 link
[ip
->i_d
.di_size
] = '\0';
556 xfs_mount_t
*mp
= ip
->i_mount
;
560 xfs_itrace_entry(ip
);
562 if (XFS_FORCED_SHUTDOWN(mp
))
563 return XFS_ERROR(EIO
);
565 xfs_ilock(ip
, XFS_ILOCK_SHARED
);
567 ASSERT((ip
->i_d
.di_mode
& S_IFMT
) == S_IFLNK
);
568 ASSERT(ip
->i_d
.di_size
<= MAXPATHLEN
);
570 pathlen
= ip
->i_d
.di_size
;
574 if (ip
->i_df
.if_flags
& XFS_IFINLINE
) {
575 memcpy(link
, ip
->i_df
.if_u1
.if_data
, pathlen
);
576 link
[pathlen
] = '\0';
578 error
= xfs_readlink_bmap(ip
, link
);
582 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
589 * This is called to sync the inode and its data out to disk. We need to hold
590 * the I/O lock while flushing the data, and the inode lock while flushing the
591 * inode. The inode lock CANNOT be held while flushing the data, so acquire
592 * after we're done with that.
602 xfs_itrace_entry(ip
);
604 if (XFS_FORCED_SHUTDOWN(ip
->i_mount
))
605 return XFS_ERROR(EIO
);
608 * We always need to make sure that the required inode state is safe on
609 * disk. The inode might be clean but we still might need to force the
610 * log because of committed transactions that haven't hit the disk yet.
611 * Likewise, there could be unflushed non-transactional changes to the
612 * inode core that have to go to disk and this requires us to issue
613 * a synchronous transaction to capture these changes correctly.
615 * This code relies on the assumption that if the update_* fields
616 * of the inode are clear and the inode is unpinned then it is clean
617 * and no action is required.
619 xfs_ilock(ip
, XFS_ILOCK_SHARED
);
621 if (!ip
->i_update_core
) {
623 * Timestamps/size haven't changed since last inode flush or
624 * inode transaction commit. That means either nothing got
625 * written or a transaction committed which caught the updates.
626 * If the latter happened and the transaction hasn't hit the
627 * disk yet, the inode will be still be pinned. If it is,
630 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
631 if (xfs_ipincount(ip
)) {
632 error
= _xfs_log_force(ip
->i_mount
, (xfs_lsn_t
)0,
633 XFS_LOG_FORCE
| XFS_LOG_SYNC
,
638 * Kick off a transaction to log the inode core to get the
639 * updates. The sync transaction will also force the log.
641 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
642 tp
= xfs_trans_alloc(ip
->i_mount
, XFS_TRANS_FSYNC_TS
);
643 error
= xfs_trans_reserve(tp
, 0,
644 XFS_FSYNC_TS_LOG_RES(ip
->i_mount
), 0, 0, 0);
646 xfs_trans_cancel(tp
, 0);
649 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
652 * Note - it's possible that we might have pushed ourselves out
653 * of the way during trans_reserve which would flush the inode.
654 * But there's no guarantee that the inode buffer has actually
655 * gone out yet (it's delwri). Plus the buffer could be pinned
656 * anyway if it's part of an inode in another recent
657 * transaction. So we play it safe and fire off the
658 * transaction anyway.
660 xfs_trans_ijoin(tp
, ip
, XFS_ILOCK_EXCL
);
661 xfs_trans_ihold(tp
, ip
);
662 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
663 xfs_trans_set_sync(tp
);
664 error
= _xfs_trans_commit(tp
, 0, &log_flushed
);
666 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
669 if (ip
->i_mount
->m_flags
& XFS_MOUNT_BARRIER
) {
671 * If the log write didn't issue an ordered tag we need
672 * to flush the disk cache for the data device now.
675 xfs_blkdev_issue_flush(ip
->i_mount
->m_ddev_targp
);
678 * If this inode is on the RT dev we need to flush that
681 if (XFS_IS_REALTIME_INODE(ip
))
682 xfs_blkdev_issue_flush(ip
->i_mount
->m_rtdev_targp
);
689 * Flags for xfs_free_eofblocks
691 #define XFS_FREE_EOF_TRYLOCK (1<<0)
694 * This is called by xfs_inactive to free any blocks beyond eof
695 * when the link count isn't zero and by xfs_dm_punch_hole() when
696 * punching a hole to EOF.
706 xfs_fileoff_t end_fsb
;
707 xfs_fileoff_t last_fsb
;
708 xfs_filblks_t map_len
;
710 xfs_bmbt_irec_t imap
;
713 * Figure out if there are any blocks beyond the end
714 * of the file. If not, then there is nothing to do.
716 end_fsb
= XFS_B_TO_FSB(mp
, ((xfs_ufsize_t
)ip
->i_size
));
717 last_fsb
= XFS_B_TO_FSB(mp
, (xfs_ufsize_t
)XFS_MAXIOFFSET(mp
));
718 map_len
= last_fsb
- end_fsb
;
723 xfs_ilock(ip
, XFS_ILOCK_SHARED
);
724 error
= xfs_bmapi(NULL
, ip
, end_fsb
, map_len
, 0,
725 NULL
, 0, &imap
, &nimaps
, NULL
, NULL
);
726 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
728 if (!error
&& (nimaps
!= 0) &&
729 (imap
.br_startblock
!= HOLESTARTBLOCK
||
730 ip
->i_delayed_blks
)) {
732 * Attach the dquots to the inode up front.
734 error
= xfs_qm_dqattach(ip
, 0);
739 * There are blocks after the end of file.
740 * Free them up now by truncating the file to
743 tp
= xfs_trans_alloc(mp
, XFS_TRANS_INACTIVE
);
746 * Do the xfs_itruncate_start() call before
747 * reserving any log space because
748 * itruncate_start will call into the buffer
750 * do that within a transaction.
752 if (flags
& XFS_FREE_EOF_TRYLOCK
) {
753 if (!xfs_ilock_nowait(ip
, XFS_IOLOCK_EXCL
)) {
754 xfs_trans_cancel(tp
, 0);
758 xfs_ilock(ip
, XFS_IOLOCK_EXCL
);
760 error
= xfs_itruncate_start(ip
, XFS_ITRUNC_DEFINITE
,
763 xfs_trans_cancel(tp
, 0);
764 xfs_iunlock(ip
, XFS_IOLOCK_EXCL
);
768 error
= xfs_trans_reserve(tp
, 0,
769 XFS_ITRUNCATE_LOG_RES(mp
),
770 0, XFS_TRANS_PERM_LOG_RES
,
771 XFS_ITRUNCATE_LOG_COUNT
);
773 ASSERT(XFS_FORCED_SHUTDOWN(mp
));
774 xfs_trans_cancel(tp
, 0);
775 xfs_iunlock(ip
, XFS_IOLOCK_EXCL
);
779 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
780 xfs_trans_ijoin(tp
, ip
,
783 xfs_trans_ihold(tp
, ip
);
785 error
= xfs_itruncate_finish(&tp
, ip
,
790 * If we get an error at this point we
791 * simply don't bother truncating the file.
795 (XFS_TRANS_RELEASE_LOG_RES
|
798 error
= xfs_trans_commit(tp
,
799 XFS_TRANS_RELEASE_LOG_RES
);
801 xfs_iunlock(ip
, XFS_IOLOCK_EXCL
|XFS_ILOCK_EXCL
);
807 * Free a symlink that has blocks associated with it.
810 xfs_inactive_symlink_rmt(
818 xfs_fsblock_t first_block
;
819 xfs_bmap_free_t free_list
;
822 xfs_bmbt_irec_t mval
[SYMLINK_MAPS
];
830 ASSERT(ip
->i_d
.di_size
> XFS_IFORK_DSIZE(ip
));
832 * We're freeing a symlink that has some
833 * blocks allocated to it. Free the
834 * blocks here. We know that we've got
835 * either 1 or 2 extents and that we can
836 * free them all in one bunmapi call.
838 ASSERT(ip
->i_d
.di_nextents
> 0 && ip
->i_d
.di_nextents
<= 2);
839 if ((error
= xfs_trans_reserve(tp
, 0, XFS_ITRUNCATE_LOG_RES(mp
), 0,
840 XFS_TRANS_PERM_LOG_RES
, XFS_ITRUNCATE_LOG_COUNT
))) {
841 ASSERT(XFS_FORCED_SHUTDOWN(mp
));
842 xfs_trans_cancel(tp
, 0);
847 * Lock the inode, fix the size, and join it to the transaction.
848 * Hold it so in the normal path, we still have it locked for
849 * the second transaction. In the error paths we need it
850 * held so the cancel won't rele it, see below.
852 xfs_ilock(ip
, XFS_IOLOCK_EXCL
| XFS_ILOCK_EXCL
);
853 size
= (int)ip
->i_d
.di_size
;
855 xfs_trans_ijoin(tp
, ip
, XFS_ILOCK_EXCL
| XFS_IOLOCK_EXCL
);
856 xfs_trans_ihold(tp
, ip
);
857 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
859 * Find the block(s) so we can inval and unmap them.
862 xfs_bmap_init(&free_list
, &first_block
);
863 nmaps
= ARRAY_SIZE(mval
);
864 if ((error
= xfs_bmapi(tp
, ip
, 0, XFS_B_TO_FSB(mp
, size
),
865 XFS_BMAPI_METADATA
, &first_block
, 0, mval
, &nmaps
,
869 * Invalidate the block(s).
871 for (i
= 0; i
< nmaps
; i
++) {
872 bp
= xfs_trans_get_buf(tp
, mp
->m_ddev_targp
,
873 XFS_FSB_TO_DADDR(mp
, mval
[i
].br_startblock
),
874 XFS_FSB_TO_BB(mp
, mval
[i
].br_blockcount
), 0);
875 xfs_trans_binval(tp
, bp
);
878 * Unmap the dead block(s) to the free_list.
880 if ((error
= xfs_bunmapi(tp
, ip
, 0, size
, XFS_BMAPI_METADATA
, nmaps
,
881 &first_block
, &free_list
, NULL
, &done
)))
885 * Commit the first transaction. This logs the EFI and the inode.
887 if ((error
= xfs_bmap_finish(&tp
, &free_list
, &committed
)))
890 * The transaction must have been committed, since there were
891 * actually extents freed by xfs_bunmapi. See xfs_bmap_finish.
892 * The new tp has the extent freeing and EFDs.
896 * The first xact was committed, so add the inode to the new one.
897 * Mark it dirty so it will be logged and moved forward in the log as
898 * part of every commit.
900 xfs_trans_ijoin(tp
, ip
, XFS_ILOCK_EXCL
| XFS_IOLOCK_EXCL
);
901 xfs_trans_ihold(tp
, ip
);
902 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
904 * Get a new, empty transaction to return to our caller.
906 ntp
= xfs_trans_dup(tp
);
908 * Commit the transaction containing extent freeing and EFDs.
909 * If we get an error on the commit here or on the reserve below,
910 * we need to unlock the inode since the new transaction doesn't
911 * have the inode attached.
913 error
= xfs_trans_commit(tp
, 0);
916 ASSERT(XFS_FORCED_SHUTDOWN(mp
));
920 * transaction commit worked ok so we can drop the extra ticket
921 * reference that we gained in xfs_trans_dup()
923 xfs_log_ticket_put(tp
->t_ticket
);
926 * Remove the memory for extent descriptions (just bookkeeping).
928 if (ip
->i_df
.if_bytes
)
929 xfs_idata_realloc(ip
, -ip
->i_df
.if_bytes
, XFS_DATA_FORK
);
930 ASSERT(ip
->i_df
.if_bytes
== 0);
932 * Put an itruncate log reservation in the new transaction
935 if ((error
= xfs_trans_reserve(tp
, 0, XFS_ITRUNCATE_LOG_RES(mp
), 0,
936 XFS_TRANS_PERM_LOG_RES
, XFS_ITRUNCATE_LOG_COUNT
))) {
937 ASSERT(XFS_FORCED_SHUTDOWN(mp
));
941 * Return with the inode locked but not joined to the transaction.
947 xfs_bmap_cancel(&free_list
);
950 * Have to come here with the inode locked and either
951 * (held and in the transaction) or (not in the transaction).
952 * If the inode isn't held then cancel would iput it, but
953 * that's wrong since this is inactive and the vnode ref
954 * count is 0 already.
955 * Cancel won't do anything to the inode if held, but it still
956 * needs to be locked until the cancel is done, if it was
957 * joined to the transaction.
959 xfs_trans_cancel(tp
, XFS_TRANS_RELEASE_LOG_RES
| XFS_TRANS_ABORT
);
960 xfs_iunlock(ip
, XFS_IOLOCK_EXCL
| XFS_ILOCK_EXCL
);
967 xfs_inactive_symlink_local(
973 ASSERT(ip
->i_d
.di_size
<= XFS_IFORK_DSIZE(ip
));
975 * We're freeing a symlink which fit into
976 * the inode. Just free the memory used
977 * to hold the old symlink.
979 error
= xfs_trans_reserve(*tpp
, 0,
980 XFS_ITRUNCATE_LOG_RES(ip
->i_mount
),
981 0, XFS_TRANS_PERM_LOG_RES
,
982 XFS_ITRUNCATE_LOG_COUNT
);
985 xfs_trans_cancel(*tpp
, 0);
989 xfs_ilock(ip
, XFS_ILOCK_EXCL
| XFS_IOLOCK_EXCL
);
992 * Zero length symlinks _can_ exist.
994 if (ip
->i_df
.if_bytes
> 0) {
995 xfs_idata_realloc(ip
,
996 -(ip
->i_df
.if_bytes
),
998 ASSERT(ip
->i_df
.if_bytes
== 0);
1012 ASSERT(xfs_isilocked(ip
, XFS_IOLOCK_EXCL
));
1015 ASSERT(ip
->i_d
.di_forkoff
!= 0);
1016 error
= xfs_trans_commit(tp
, XFS_TRANS_RELEASE_LOG_RES
);
1017 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1021 error
= xfs_attr_inactive(ip
);
1025 tp
= xfs_trans_alloc(mp
, XFS_TRANS_INACTIVE
);
1026 error
= xfs_trans_reserve(tp
, 0,
1027 XFS_IFREE_LOG_RES(mp
),
1028 0, XFS_TRANS_PERM_LOG_RES
,
1029 XFS_INACTIVE_LOG_COUNT
);
1033 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
1034 xfs_trans_ijoin(tp
, ip
, XFS_IOLOCK_EXCL
| XFS_ILOCK_EXCL
);
1035 xfs_trans_ihold(tp
, ip
);
1036 xfs_idestroy_fork(ip
, XFS_ATTR_FORK
);
1038 ASSERT(ip
->i_d
.di_anextents
== 0);
1044 ASSERT(XFS_FORCED_SHUTDOWN(mp
));
1045 xfs_trans_cancel(tp
, 0);
1048 xfs_iunlock(ip
, XFS_IOLOCK_EXCL
);
1056 xfs_mount_t
*mp
= ip
->i_mount
;
1059 if (!S_ISREG(ip
->i_d
.di_mode
) || (ip
->i_d
.di_mode
== 0))
1062 /* If this is a read-only mount, don't do this (would generate I/O) */
1063 if (mp
->m_flags
& XFS_MOUNT_RDONLY
)
1066 if (!XFS_FORCED_SHUTDOWN(mp
)) {
1070 * If we are using filestreams, and we have an unlinked
1071 * file that we are processing the last close on, then nothing
1072 * will be able to reopen and write to this file. Purge this
1073 * inode from the filestreams cache so that it doesn't delay
1074 * teardown of the inode.
1076 if ((ip
->i_d
.di_nlink
== 0) && xfs_inode_is_filestream(ip
))
1077 xfs_filestream_deassociate(ip
);
1080 * If we previously truncated this file and removed old data
1081 * in the process, we want to initiate "early" writeout on
1082 * the last close. This is an attempt to combat the notorious
1083 * NULL files problem which is particularly noticable from a
1084 * truncate down, buffered (re-)write (delalloc), followed by
1085 * a crash. What we are effectively doing here is
1086 * significantly reducing the time window where we'd otherwise
1087 * be exposed to that problem.
1089 truncated
= xfs_iflags_test_and_clear(ip
, XFS_ITRUNCATED
);
1090 if (truncated
&& VN_DIRTY(VFS_I(ip
)) && ip
->i_delayed_blks
> 0)
1091 xfs_flush_pages(ip
, 0, -1, XFS_B_ASYNC
, FI_NONE
);
1094 if (ip
->i_d
.di_nlink
!= 0) {
1095 if ((((ip
->i_d
.di_mode
& S_IFMT
) == S_IFREG
) &&
1096 ((ip
->i_size
> 0) || (VN_CACHED(VFS_I(ip
)) > 0 ||
1097 ip
->i_delayed_blks
> 0)) &&
1098 (ip
->i_df
.if_flags
& XFS_IFEXTENTS
)) &&
1099 (!(ip
->i_d
.di_flags
&
1100 (XFS_DIFLAG_PREALLOC
| XFS_DIFLAG_APPEND
)))) {
1103 * If we can't get the iolock just skip truncating
1104 * the blocks past EOF because we could deadlock
1105 * with the mmap_sem otherwise. We'll get another
1106 * chance to drop them once the last reference to
1107 * the inode is dropped, so we'll never leak blocks
1110 error
= xfs_free_eofblocks(mp
, ip
,
1111 XFS_FREE_EOF_TRYLOCK
);
1123 * This is called when the vnode reference count for the vnode
1124 * goes to zero. If the file has been unlinked, then it must
1125 * now be truncated. Also, we clear all of the read-ahead state
1126 * kept for the inode here since the file is now closed.
1132 xfs_bmap_free_t free_list
;
1133 xfs_fsblock_t first_block
;
1140 xfs_itrace_entry(ip
);
1143 * If the inode is already free, then there can be nothing
1146 if (ip
->i_d
.di_mode
== 0 || is_bad_inode(VFS_I(ip
))) {
1147 ASSERT(ip
->i_df
.if_real_bytes
== 0);
1148 ASSERT(ip
->i_df
.if_broot_bytes
== 0);
1149 return VN_INACTIVE_CACHE
;
1153 * Only do a truncate if it's a regular file with
1154 * some actual space in it. It's OK to look at the
1155 * inode's fields without the lock because we're the
1156 * only one with a reference to the inode.
1158 truncate
= ((ip
->i_d
.di_nlink
== 0) &&
1159 ((ip
->i_d
.di_size
!= 0) || (ip
->i_size
!= 0) ||
1160 (ip
->i_d
.di_nextents
> 0) || (ip
->i_delayed_blks
> 0)) &&
1161 ((ip
->i_d
.di_mode
& S_IFMT
) == S_IFREG
));
1165 if (ip
->i_d
.di_nlink
== 0 && DM_EVENT_ENABLED(ip
, DM_EVENT_DESTROY
))
1166 XFS_SEND_DESTROY(mp
, ip
, DM_RIGHT_NULL
);
1170 /* If this is a read-only mount, don't do this (would generate I/O) */
1171 if (mp
->m_flags
& XFS_MOUNT_RDONLY
)
1174 if (ip
->i_d
.di_nlink
!= 0) {
1175 if ((((ip
->i_d
.di_mode
& S_IFMT
) == S_IFREG
) &&
1176 ((ip
->i_size
> 0) || (VN_CACHED(VFS_I(ip
)) > 0 ||
1177 ip
->i_delayed_blks
> 0)) &&
1178 (ip
->i_df
.if_flags
& XFS_IFEXTENTS
) &&
1179 (!(ip
->i_d
.di_flags
&
1180 (XFS_DIFLAG_PREALLOC
| XFS_DIFLAG_APPEND
)) ||
1181 (ip
->i_delayed_blks
!= 0)))) {
1182 error
= xfs_free_eofblocks(mp
, ip
, 0);
1184 return VN_INACTIVE_CACHE
;
1189 ASSERT(ip
->i_d
.di_nlink
== 0);
1191 error
= xfs_qm_dqattach(ip
, 0);
1193 return VN_INACTIVE_CACHE
;
1195 tp
= xfs_trans_alloc(mp
, XFS_TRANS_INACTIVE
);
1198 * Do the xfs_itruncate_start() call before
1199 * reserving any log space because itruncate_start
1200 * will call into the buffer cache and we can't
1201 * do that within a transaction.
1203 xfs_ilock(ip
, XFS_IOLOCK_EXCL
);
1205 error
= xfs_itruncate_start(ip
, XFS_ITRUNC_DEFINITE
, 0);
1207 xfs_trans_cancel(tp
, 0);
1208 xfs_iunlock(ip
, XFS_IOLOCK_EXCL
);
1209 return VN_INACTIVE_CACHE
;
1212 error
= xfs_trans_reserve(tp
, 0,
1213 XFS_ITRUNCATE_LOG_RES(mp
),
1214 0, XFS_TRANS_PERM_LOG_RES
,
1215 XFS_ITRUNCATE_LOG_COUNT
);
1217 /* Don't call itruncate_cleanup */
1218 ASSERT(XFS_FORCED_SHUTDOWN(mp
));
1219 xfs_trans_cancel(tp
, 0);
1220 xfs_iunlock(ip
, XFS_IOLOCK_EXCL
);
1221 return VN_INACTIVE_CACHE
;
1224 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
1225 xfs_trans_ijoin(tp
, ip
, XFS_IOLOCK_EXCL
| XFS_ILOCK_EXCL
);
1226 xfs_trans_ihold(tp
, ip
);
1229 * normally, we have to run xfs_itruncate_finish sync.
1230 * But if filesystem is wsync and we're in the inactive
1231 * path, then we know that nlink == 0, and that the
1232 * xaction that made nlink == 0 is permanently committed
1233 * since xfs_remove runs as a synchronous transaction.
1235 error
= xfs_itruncate_finish(&tp
, ip
, 0, XFS_DATA_FORK
,
1236 (!(mp
->m_flags
& XFS_MOUNT_WSYNC
) ? 1 : 0));
1239 xfs_trans_cancel(tp
,
1240 XFS_TRANS_RELEASE_LOG_RES
| XFS_TRANS_ABORT
);
1241 xfs_iunlock(ip
, XFS_IOLOCK_EXCL
| XFS_ILOCK_EXCL
);
1242 return VN_INACTIVE_CACHE
;
1244 } else if ((ip
->i_d
.di_mode
& S_IFMT
) == S_IFLNK
) {
1247 * If we get an error while cleaning up a
1248 * symlink we bail out.
1250 error
= (ip
->i_d
.di_size
> XFS_IFORK_DSIZE(ip
)) ?
1251 xfs_inactive_symlink_rmt(ip
, &tp
) :
1252 xfs_inactive_symlink_local(ip
, &tp
);
1256 return VN_INACTIVE_CACHE
;
1259 xfs_trans_ijoin(tp
, ip
, XFS_IOLOCK_EXCL
| XFS_ILOCK_EXCL
);
1260 xfs_trans_ihold(tp
, ip
);
1262 error
= xfs_trans_reserve(tp
, 0,
1263 XFS_IFREE_LOG_RES(mp
),
1264 0, XFS_TRANS_PERM_LOG_RES
,
1265 XFS_INACTIVE_LOG_COUNT
);
1267 ASSERT(XFS_FORCED_SHUTDOWN(mp
));
1268 xfs_trans_cancel(tp
, 0);
1269 return VN_INACTIVE_CACHE
;
1272 xfs_ilock(ip
, XFS_ILOCK_EXCL
| XFS_IOLOCK_EXCL
);
1273 xfs_trans_ijoin(tp
, ip
, XFS_IOLOCK_EXCL
| XFS_ILOCK_EXCL
);
1274 xfs_trans_ihold(tp
, ip
);
1278 * If there are attributes associated with the file
1279 * then blow them away now. The code calls a routine
1280 * that recursively deconstructs the attribute fork.
1281 * We need to just commit the current transaction
1282 * because we can't use it for xfs_attr_inactive().
1284 if (ip
->i_d
.di_anextents
> 0) {
1285 error
= xfs_inactive_attrs(ip
, &tp
);
1287 * If we got an error, the transaction is already
1288 * cancelled, and the inode is unlocked. Just get out.
1291 return VN_INACTIVE_CACHE
;
1292 } else if (ip
->i_afp
) {
1293 xfs_idestroy_fork(ip
, XFS_ATTR_FORK
);
1299 xfs_bmap_init(&free_list
, &first_block
);
1300 error
= xfs_ifree(tp
, ip
, &free_list
);
1303 * If we fail to free the inode, shut down. The cancel
1304 * might do that, we need to make sure. Otherwise the
1305 * inode might be lost for a long time or forever.
1307 if (!XFS_FORCED_SHUTDOWN(mp
)) {
1309 "xfs_inactive: xfs_ifree() returned an error = %d on %s",
1310 error
, mp
->m_fsname
);
1311 xfs_force_shutdown(mp
, SHUTDOWN_META_IO_ERROR
);
1313 xfs_trans_cancel(tp
, XFS_TRANS_RELEASE_LOG_RES
|XFS_TRANS_ABORT
);
1316 * Credit the quota account(s). The inode is gone.
1318 xfs_trans_mod_dquot_byino(tp
, ip
, XFS_TRANS_DQ_ICOUNT
, -1);
1321 * Just ignore errors at this point. There is nothing we can
1322 * do except to try to keep going. Make sure it's not a silent
1325 error
= xfs_bmap_finish(&tp
, &free_list
, &committed
);
1327 xfs_fs_cmn_err(CE_NOTE
, mp
, "xfs_inactive: "
1328 "xfs_bmap_finish() returned error %d", error
);
1329 error
= xfs_trans_commit(tp
, XFS_TRANS_RELEASE_LOG_RES
);
1331 xfs_fs_cmn_err(CE_NOTE
, mp
, "xfs_inactive: "
1332 "xfs_trans_commit() returned error %d", error
);
1336 * Release the dquots held by inode, if any.
1338 xfs_qm_dqdetach(ip
);
1339 xfs_iunlock(ip
, XFS_IOLOCK_EXCL
| XFS_ILOCK_EXCL
);
1342 return VN_INACTIVE_CACHE
;
1346 * Lookups up an inode from "name". If ci_name is not NULL, then a CI match
1347 * is allowed, otherwise it has to be an exact match. If a CI match is found,
1348 * ci_name->name will point to a the actual name (caller must free) or
1349 * will be set to NULL if an exact match is found.
1354 struct xfs_name
*name
,
1356 struct xfs_name
*ci_name
)
1362 xfs_itrace_entry(dp
);
1364 if (XFS_FORCED_SHUTDOWN(dp
->i_mount
))
1365 return XFS_ERROR(EIO
);
1367 lock_mode
= xfs_ilock_map_shared(dp
);
1368 error
= xfs_dir_lookup(NULL
, dp
, name
, &inum
, ci_name
);
1369 xfs_iunlock_map_shared(dp
, lock_mode
);
1374 error
= xfs_iget(dp
->i_mount
, NULL
, inum
, 0, 0, ipp
);
1378 xfs_itrace_ref(*ipp
);
1383 kmem_free(ci_name
->name
);
1392 struct xfs_name
*name
,
1398 int is_dir
= S_ISDIR(mode
);
1399 struct xfs_mount
*mp
= dp
->i_mount
;
1400 struct xfs_inode
*ip
= NULL
;
1401 struct xfs_trans
*tp
= NULL
;
1403 xfs_bmap_free_t free_list
;
1404 xfs_fsblock_t first_block
;
1405 boolean_t unlock_dp_on_error
= B_FALSE
;
1409 struct xfs_dquot
*udqp
= NULL
;
1410 struct xfs_dquot
*gdqp
= NULL
;
1415 xfs_itrace_entry(dp
);
1417 if (XFS_FORCED_SHUTDOWN(mp
))
1418 return XFS_ERROR(EIO
);
1420 if (DM_EVENT_ENABLED(dp
, DM_EVENT_CREATE
)) {
1421 error
= XFS_SEND_NAMESP(mp
, DM_EVENT_CREATE
,
1422 dp
, DM_RIGHT_NULL
, NULL
,
1423 DM_RIGHT_NULL
, name
->name
, NULL
,
1430 if (dp
->i_d
.di_flags
& XFS_DIFLAG_PROJINHERIT
)
1431 prid
= dp
->i_d
.di_projid
;
1436 * Make sure that we have allocated dquot(s) on disk.
1438 error
= xfs_qm_vop_dqalloc(dp
, current_fsuid(), current_fsgid(), prid
,
1439 XFS_QMOPT_QUOTALL
| XFS_QMOPT_INHERIT
, &udqp
, &gdqp
);
1445 resblks
= XFS_MKDIR_SPACE_RES(mp
, name
->len
);
1446 log_res
= XFS_MKDIR_LOG_RES(mp
);
1447 log_count
= XFS_MKDIR_LOG_COUNT
;
1448 tp
= xfs_trans_alloc(mp
, XFS_TRANS_MKDIR
);
1450 resblks
= XFS_CREATE_SPACE_RES(mp
, name
->len
);
1451 log_res
= XFS_CREATE_LOG_RES(mp
);
1452 log_count
= XFS_CREATE_LOG_COUNT
;
1453 tp
= xfs_trans_alloc(mp
, XFS_TRANS_CREATE
);
1456 cancel_flags
= XFS_TRANS_RELEASE_LOG_RES
;
1459 * Initially assume that the file does not exist and
1460 * reserve the resources for that case. If that is not
1461 * the case we'll drop the one we have and get a more
1462 * appropriate transaction later.
1464 error
= xfs_trans_reserve(tp
, resblks
, log_res
, 0,
1465 XFS_TRANS_PERM_LOG_RES
, log_count
);
1466 if (error
== ENOSPC
) {
1467 /* flush outstanding delalloc blocks and retry */
1468 xfs_flush_inodes(dp
);
1469 error
= xfs_trans_reserve(tp
, resblks
, log_res
, 0,
1470 XFS_TRANS_PERM_LOG_RES
, log_count
);
1472 if (error
== ENOSPC
) {
1473 /* No space at all so try a "no-allocation" reservation */
1475 error
= xfs_trans_reserve(tp
, 0, log_res
, 0,
1476 XFS_TRANS_PERM_LOG_RES
, log_count
);
1480 goto out_trans_cancel
;
1483 xfs_ilock(dp
, XFS_ILOCK_EXCL
| XFS_ILOCK_PARENT
);
1484 unlock_dp_on_error
= B_TRUE
;
1487 * Check for directory link count overflow.
1489 if (is_dir
&& dp
->i_d
.di_nlink
>= XFS_MAXLINK
) {
1490 error
= XFS_ERROR(EMLINK
);
1491 goto out_trans_cancel
;
1494 xfs_bmap_init(&free_list
, &first_block
);
1497 * Reserve disk quota and the inode.
1499 error
= xfs_trans_reserve_quota(tp
, mp
, udqp
, gdqp
, resblks
, 1, 0);
1501 goto out_trans_cancel
;
1503 error
= xfs_dir_canenter(tp
, dp
, name
, resblks
);
1505 goto out_trans_cancel
;
1508 * A newly created regular or special file just has one directory
1509 * entry pointing to them, but a directory also the "." entry
1510 * pointing to itself.
1512 error
= xfs_dir_ialloc(&tp
, dp
, mode
, is_dir
? 2 : 1, rdev
, credp
,
1513 prid
, resblks
> 0, &ip
, &committed
);
1515 if (error
== ENOSPC
)
1516 goto out_trans_cancel
;
1517 goto out_trans_abort
;
1521 * At this point, we've gotten a newly allocated inode.
1522 * It is locked (and joined to the transaction).
1525 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
1528 * Now we join the directory inode to the transaction. We do not do it
1529 * earlier because xfs_dir_ialloc might commit the previous transaction
1530 * (and release all the locks). An error from here on will result in
1531 * the transaction cancel unlocking dp so don't do it explicitly in the
1535 xfs_trans_ijoin(tp
, dp
, XFS_ILOCK_EXCL
);
1536 unlock_dp_on_error
= B_FALSE
;
1538 error
= xfs_dir_createname(tp
, dp
, name
, ip
->i_ino
,
1539 &first_block
, &free_list
, resblks
?
1540 resblks
- XFS_IALLOC_SPACE_RES(mp
) : 0);
1542 ASSERT(error
!= ENOSPC
);
1543 goto out_trans_abort
;
1545 xfs_ichgtime(dp
, XFS_ICHGTIME_MOD
| XFS_ICHGTIME_CHG
);
1546 xfs_trans_log_inode(tp
, dp
, XFS_ILOG_CORE
);
1549 error
= xfs_dir_init(tp
, ip
, dp
);
1551 goto out_bmap_cancel
;
1553 error
= xfs_bumplink(tp
, dp
);
1555 goto out_bmap_cancel
;
1559 * If this is a synchronous mount, make sure that the
1560 * create transaction goes to disk before returning to
1563 if (mp
->m_flags
& (XFS_MOUNT_WSYNC
|XFS_MOUNT_DIRSYNC
))
1564 xfs_trans_set_sync(tp
);
1567 * Attach the dquot(s) to the inodes and modify them incore.
1568 * These ids of the inode couldn't have changed since the new
1569 * inode has been locked ever since it was created.
1571 xfs_qm_vop_create_dqattach(tp
, ip
, udqp
, gdqp
);
1574 * xfs_trans_commit normally decrements the vnode ref count
1575 * when it unlocks the inode. Since we want to return the
1576 * vnode to the caller, we bump the vnode ref count now.
1580 error
= xfs_bmap_finish(&tp
, &free_list
, &committed
);
1582 goto out_abort_rele
;
1584 error
= xfs_trans_commit(tp
, XFS_TRANS_RELEASE_LOG_RES
);
1590 xfs_qm_dqrele(udqp
);
1591 xfs_qm_dqrele(gdqp
);
1595 /* Fallthrough to std_return with error = 0 */
1597 if (DM_EVENT_ENABLED(dp
, DM_EVENT_POSTCREATE
)) {
1598 XFS_SEND_NAMESP(mp
, DM_EVENT_POSTCREATE
, dp
, DM_RIGHT_NULL
,
1599 ip
, DM_RIGHT_NULL
, name
->name
, NULL
, mode
,
1606 xfs_bmap_cancel(&free_list
);
1608 cancel_flags
|= XFS_TRANS_ABORT
;
1610 xfs_trans_cancel(tp
, cancel_flags
);
1612 xfs_qm_dqrele(udqp
);
1613 xfs_qm_dqrele(gdqp
);
1615 if (unlock_dp_on_error
)
1616 xfs_iunlock(dp
, XFS_ILOCK_EXCL
);
1622 * Wait until after the current transaction is aborted to
1623 * release the inode. This prevents recursive transactions
1624 * and deadlocks from xfs_inactive.
1626 xfs_bmap_cancel(&free_list
);
1627 cancel_flags
|= XFS_TRANS_ABORT
;
1628 xfs_trans_cancel(tp
, cancel_flags
);
1630 unlock_dp_on_error
= B_FALSE
;
1636 int xfs_small_retries
;
1637 int xfs_middle_retries
;
1638 int xfs_lots_retries
;
1639 int xfs_lock_delays
;
1643 * Bump the subclass so xfs_lock_inodes() acquires each lock with
1647 xfs_lock_inumorder(int lock_mode
, int subclass
)
1649 if (lock_mode
& (XFS_IOLOCK_SHARED
|XFS_IOLOCK_EXCL
))
1650 lock_mode
|= (subclass
+ XFS_LOCK_INUMORDER
) << XFS_IOLOCK_SHIFT
;
1651 if (lock_mode
& (XFS_ILOCK_SHARED
|XFS_ILOCK_EXCL
))
1652 lock_mode
|= (subclass
+ XFS_LOCK_INUMORDER
) << XFS_ILOCK_SHIFT
;
1658 * The following routine will lock n inodes in exclusive mode.
1659 * We assume the caller calls us with the inodes in i_ino order.
1661 * We need to detect deadlock where an inode that we lock
1662 * is in the AIL and we start waiting for another inode that is locked
1663 * by a thread in a long running transaction (such as truncate). This can
1664 * result in deadlock since the long running trans might need to wait
1665 * for the inode we just locked in order to push the tail and free space
1674 int attempts
= 0, i
, j
, try_lock
;
1677 ASSERT(ips
&& (inodes
>= 2)); /* we need at least two */
1683 for (; i
< inodes
; i
++) {
1686 if (i
&& (ips
[i
] == ips
[i
-1])) /* Already locked */
1690 * If try_lock is not set yet, make sure all locked inodes
1691 * are not in the AIL.
1692 * If any are, set try_lock to be used later.
1696 for (j
= (i
- 1); j
>= 0 && !try_lock
; j
--) {
1697 lp
= (xfs_log_item_t
*)ips
[j
]->i_itemp
;
1698 if (lp
&& (lp
->li_flags
& XFS_LI_IN_AIL
)) {
1705 * If any of the previous locks we have locked is in the AIL,
1706 * we must TRY to get the second and subsequent locks. If
1707 * we can't get any, we must release all we have
1712 /* try_lock must be 0 if i is 0. */
1714 * try_lock means we have an inode locked
1715 * that is in the AIL.
1718 if (!xfs_ilock_nowait(ips
[i
], xfs_lock_inumorder(lock_mode
, i
))) {
1722 * Unlock all previous guys and try again.
1723 * xfs_iunlock will try to push the tail
1724 * if the inode is in the AIL.
1727 for(j
= i
- 1; j
>= 0; j
--) {
1730 * Check to see if we've already
1731 * unlocked this one.
1732 * Not the first one going back,
1733 * and the inode ptr is the same.
1735 if ((j
!= (i
- 1)) && ips
[j
] ==
1739 xfs_iunlock(ips
[j
], lock_mode
);
1742 if ((attempts
% 5) == 0) {
1743 delay(1); /* Don't just spin the CPU */
1753 xfs_ilock(ips
[i
], xfs_lock_inumorder(lock_mode
, i
));
1759 if (attempts
< 5) xfs_small_retries
++;
1760 else if (attempts
< 100) xfs_middle_retries
++;
1761 else xfs_lots_retries
++;
1769 * xfs_lock_two_inodes() can only be used to lock one type of lock
1770 * at a time - the iolock or the ilock, but not both at once. If
1771 * we lock both at once, lockdep will report false positives saying
1772 * we have violated locking orders.
1775 xfs_lock_two_inodes(
1784 if (lock_mode
& (XFS_IOLOCK_SHARED
|XFS_IOLOCK_EXCL
))
1785 ASSERT((lock_mode
& (XFS_ILOCK_SHARED
|XFS_ILOCK_EXCL
)) == 0);
1786 ASSERT(ip0
->i_ino
!= ip1
->i_ino
);
1788 if (ip0
->i_ino
> ip1
->i_ino
) {
1795 xfs_ilock(ip0
, xfs_lock_inumorder(lock_mode
, 0));
1798 * If the first lock we have locked is in the AIL, we must TRY to get
1799 * the second lock. If we can't get it, we must release the first one
1802 lp
= (xfs_log_item_t
*)ip0
->i_itemp
;
1803 if (lp
&& (lp
->li_flags
& XFS_LI_IN_AIL
)) {
1804 if (!xfs_ilock_nowait(ip1
, xfs_lock_inumorder(lock_mode
, 1))) {
1805 xfs_iunlock(ip0
, lock_mode
);
1806 if ((++attempts
% 5) == 0)
1807 delay(1); /* Don't just spin the CPU */
1811 xfs_ilock(ip1
, xfs_lock_inumorder(lock_mode
, 1));
1818 struct xfs_name
*name
,
1821 xfs_mount_t
*mp
= dp
->i_mount
;
1822 xfs_trans_t
*tp
= NULL
;
1823 int is_dir
= S_ISDIR(ip
->i_d
.di_mode
);
1825 xfs_bmap_free_t free_list
;
1826 xfs_fsblock_t first_block
;
1833 xfs_itrace_entry(dp
);
1834 xfs_itrace_entry(ip
);
1836 if (XFS_FORCED_SHUTDOWN(mp
))
1837 return XFS_ERROR(EIO
);
1839 if (DM_EVENT_ENABLED(dp
, DM_EVENT_REMOVE
)) {
1840 error
= XFS_SEND_NAMESP(mp
, DM_EVENT_REMOVE
, dp
, DM_RIGHT_NULL
,
1841 NULL
, DM_RIGHT_NULL
, name
->name
, NULL
,
1842 ip
->i_d
.di_mode
, 0, 0);
1847 error
= xfs_qm_dqattach(dp
, 0);
1851 error
= xfs_qm_dqattach(ip
, 0);
1856 tp
= xfs_trans_alloc(mp
, XFS_TRANS_RMDIR
);
1857 log_count
= XFS_DEFAULT_LOG_COUNT
;
1859 tp
= xfs_trans_alloc(mp
, XFS_TRANS_REMOVE
);
1860 log_count
= XFS_REMOVE_LOG_COUNT
;
1862 cancel_flags
= XFS_TRANS_RELEASE_LOG_RES
;
1865 * We try to get the real space reservation first,
1866 * allowing for directory btree deletion(s) implying
1867 * possible bmap insert(s). If we can't get the space
1868 * reservation then we use 0 instead, and avoid the bmap
1869 * btree insert(s) in the directory code by, if the bmap
1870 * insert tries to happen, instead trimming the LAST
1871 * block from the directory.
1873 resblks
= XFS_REMOVE_SPACE_RES(mp
);
1874 error
= xfs_trans_reserve(tp
, resblks
, XFS_REMOVE_LOG_RES(mp
), 0,
1875 XFS_TRANS_PERM_LOG_RES
, log_count
);
1876 if (error
== ENOSPC
) {
1878 error
= xfs_trans_reserve(tp
, 0, XFS_REMOVE_LOG_RES(mp
), 0,
1879 XFS_TRANS_PERM_LOG_RES
, log_count
);
1882 ASSERT(error
!= ENOSPC
);
1884 goto out_trans_cancel
;
1887 xfs_lock_two_inodes(dp
, ip
, XFS_ILOCK_EXCL
);
1890 * At this point, we've gotten both the directory and the entry
1894 xfs_trans_ijoin(tp
, dp
, XFS_ILOCK_EXCL
);
1897 xfs_trans_ijoin(tp
, ip
, XFS_ILOCK_EXCL
);
1900 * If we're removing a directory perform some additional validation.
1903 ASSERT(ip
->i_d
.di_nlink
>= 2);
1904 if (ip
->i_d
.di_nlink
!= 2) {
1905 error
= XFS_ERROR(ENOTEMPTY
);
1906 goto out_trans_cancel
;
1908 if (!xfs_dir_isempty(ip
)) {
1909 error
= XFS_ERROR(ENOTEMPTY
);
1910 goto out_trans_cancel
;
1914 xfs_bmap_init(&free_list
, &first_block
);
1915 error
= xfs_dir_removename(tp
, dp
, name
, ip
->i_ino
,
1916 &first_block
, &free_list
, resblks
);
1918 ASSERT(error
!= ENOENT
);
1919 goto out_bmap_cancel
;
1921 xfs_ichgtime(dp
, XFS_ICHGTIME_MOD
| XFS_ICHGTIME_CHG
);
1925 * Drop the link from ip's "..".
1927 error
= xfs_droplink(tp
, dp
);
1929 goto out_bmap_cancel
;
1932 * Drop the "." link from ip to self.
1934 error
= xfs_droplink(tp
, ip
);
1936 goto out_bmap_cancel
;
1939 * When removing a non-directory we need to log the parent
1940 * inode here. For a directory this is done implicitly
1941 * by the xfs_droplink call for the ".." entry.
1943 xfs_trans_log_inode(tp
, dp
, XFS_ILOG_CORE
);
1947 * Drop the link from dp to ip.
1949 error
= xfs_droplink(tp
, ip
);
1951 goto out_bmap_cancel
;
1954 * Determine if this is the last link while
1955 * we are in the transaction.
1957 link_zero
= (ip
->i_d
.di_nlink
== 0);
1960 * If this is a synchronous mount, make sure that the
1961 * remove transaction goes to disk before returning to
1964 if (mp
->m_flags
& (XFS_MOUNT_WSYNC
|XFS_MOUNT_DIRSYNC
))
1965 xfs_trans_set_sync(tp
);
1967 error
= xfs_bmap_finish(&tp
, &free_list
, &committed
);
1969 goto out_bmap_cancel
;
1971 error
= xfs_trans_commit(tp
, XFS_TRANS_RELEASE_LOG_RES
);
1976 * If we are using filestreams, kill the stream association.
1977 * If the file is still open it may get a new one but that
1978 * will get killed on last close in xfs_close() so we don't
1979 * have to worry about that.
1981 if (!is_dir
&& link_zero
&& xfs_inode_is_filestream(ip
))
1982 xfs_filestream_deassociate(ip
);
1984 xfs_itrace_exit(ip
);
1985 xfs_itrace_exit(dp
);
1988 if (DM_EVENT_ENABLED(dp
, DM_EVENT_POSTREMOVE
)) {
1989 XFS_SEND_NAMESP(mp
, DM_EVENT_POSTREMOVE
, dp
, DM_RIGHT_NULL
,
1990 NULL
, DM_RIGHT_NULL
, name
->name
, NULL
,
1991 ip
->i_d
.di_mode
, error
, 0);
1997 xfs_bmap_cancel(&free_list
);
1998 cancel_flags
|= XFS_TRANS_ABORT
;
2000 xfs_trans_cancel(tp
, cancel_flags
);
2008 struct xfs_name
*target_name
)
2010 xfs_mount_t
*mp
= tdp
->i_mount
;
2013 xfs_bmap_free_t free_list
;
2014 xfs_fsblock_t first_block
;
2019 xfs_itrace_entry(tdp
);
2020 xfs_itrace_entry(sip
);
2022 ASSERT(!S_ISDIR(sip
->i_d
.di_mode
));
2024 if (XFS_FORCED_SHUTDOWN(mp
))
2025 return XFS_ERROR(EIO
);
2027 if (DM_EVENT_ENABLED(tdp
, DM_EVENT_LINK
)) {
2028 error
= XFS_SEND_NAMESP(mp
, DM_EVENT_LINK
,
2031 target_name
->name
, NULL
, 0, 0, 0);
2036 /* Return through std_return after this point. */
2038 error
= xfs_qm_dqattach(sip
, 0);
2042 error
= xfs_qm_dqattach(tdp
, 0);
2046 tp
= xfs_trans_alloc(mp
, XFS_TRANS_LINK
);
2047 cancel_flags
= XFS_TRANS_RELEASE_LOG_RES
;
2048 resblks
= XFS_LINK_SPACE_RES(mp
, target_name
->len
);
2049 error
= xfs_trans_reserve(tp
, resblks
, XFS_LINK_LOG_RES(mp
), 0,
2050 XFS_TRANS_PERM_LOG_RES
, XFS_LINK_LOG_COUNT
);
2051 if (error
== ENOSPC
) {
2053 error
= xfs_trans_reserve(tp
, 0, XFS_LINK_LOG_RES(mp
), 0,
2054 XFS_TRANS_PERM_LOG_RES
, XFS_LINK_LOG_COUNT
);
2061 xfs_lock_two_inodes(sip
, tdp
, XFS_ILOCK_EXCL
);
2064 * Increment vnode ref counts since xfs_trans_commit &
2065 * xfs_trans_cancel will both unlock the inodes and
2066 * decrement the associated ref counts.
2070 xfs_trans_ijoin(tp
, sip
, XFS_ILOCK_EXCL
);
2071 xfs_trans_ijoin(tp
, tdp
, XFS_ILOCK_EXCL
);
2074 * If the source has too many links, we can't make any more to it.
2076 if (sip
->i_d
.di_nlink
>= XFS_MAXLINK
) {
2077 error
= XFS_ERROR(EMLINK
);
2082 * If we are using project inheritance, we only allow hard link
2083 * creation in our tree when the project IDs are the same; else
2084 * the tree quota mechanism could be circumvented.
2086 if (unlikely((tdp
->i_d
.di_flags
& XFS_DIFLAG_PROJINHERIT
) &&
2087 (tdp
->i_d
.di_projid
!= sip
->i_d
.di_projid
))) {
2088 error
= XFS_ERROR(EXDEV
);
2092 error
= xfs_dir_canenter(tp
, tdp
, target_name
, resblks
);
2096 xfs_bmap_init(&free_list
, &first_block
);
2098 error
= xfs_dir_createname(tp
, tdp
, target_name
, sip
->i_ino
,
2099 &first_block
, &free_list
, resblks
);
2102 xfs_ichgtime(tdp
, XFS_ICHGTIME_MOD
| XFS_ICHGTIME_CHG
);
2103 xfs_trans_log_inode(tp
, tdp
, XFS_ILOG_CORE
);
2105 error
= xfs_bumplink(tp
, sip
);
2110 * If this is a synchronous mount, make sure that the
2111 * link transaction goes to disk before returning to
2114 if (mp
->m_flags
& (XFS_MOUNT_WSYNC
|XFS_MOUNT_DIRSYNC
)) {
2115 xfs_trans_set_sync(tp
);
2118 error
= xfs_bmap_finish (&tp
, &free_list
, &committed
);
2120 xfs_bmap_cancel(&free_list
);
2124 error
= xfs_trans_commit(tp
, XFS_TRANS_RELEASE_LOG_RES
);
2128 /* Fall through to std_return with error = 0. */
2130 if (DM_EVENT_ENABLED(sip
, DM_EVENT_POSTLINK
)) {
2131 (void) XFS_SEND_NAMESP(mp
, DM_EVENT_POSTLINK
,
2134 target_name
->name
, NULL
, 0, error
, 0);
2139 cancel_flags
|= XFS_TRANS_ABORT
;
2143 xfs_trans_cancel(tp
, cancel_flags
);
2150 struct xfs_name
*link_name
,
2151 const char *target_path
,
2156 xfs_mount_t
*mp
= dp
->i_mount
;
2161 xfs_bmap_free_t free_list
;
2162 xfs_fsblock_t first_block
;
2163 boolean_t unlock_dp_on_error
= B_FALSE
;
2166 xfs_fileoff_t first_fsb
;
2167 xfs_filblks_t fs_blocks
;
2169 xfs_bmbt_irec_t mval
[SYMLINK_MAPS
];
2171 const char *cur_chunk
;
2176 struct xfs_dquot
*udqp
, *gdqp
;
2184 xfs_itrace_entry(dp
);
2186 if (XFS_FORCED_SHUTDOWN(mp
))
2187 return XFS_ERROR(EIO
);
2190 * Check component lengths of the target path name.
2192 pathlen
= strlen(target_path
);
2193 if (pathlen
>= MAXPATHLEN
) /* total string too long */
2194 return XFS_ERROR(ENAMETOOLONG
);
2196 if (DM_EVENT_ENABLED(dp
, DM_EVENT_SYMLINK
)) {
2197 error
= XFS_SEND_NAMESP(mp
, DM_EVENT_SYMLINK
, dp
,
2198 DM_RIGHT_NULL
, NULL
, DM_RIGHT_NULL
,
2199 link_name
->name
, target_path
, 0, 0, 0);
2204 /* Return through std_return after this point. */
2207 if (dp
->i_d
.di_flags
& XFS_DIFLAG_PROJINHERIT
)
2208 prid
= dp
->i_d
.di_projid
;
2210 prid
= (xfs_prid_t
)dfltprid
;
2213 * Make sure that we have allocated dquot(s) on disk.
2215 error
= xfs_qm_vop_dqalloc(dp
, current_fsuid(), current_fsgid(), prid
,
2216 XFS_QMOPT_QUOTALL
| XFS_QMOPT_INHERIT
, &udqp
, &gdqp
);
2220 tp
= xfs_trans_alloc(mp
, XFS_TRANS_SYMLINK
);
2221 cancel_flags
= XFS_TRANS_RELEASE_LOG_RES
;
2223 * The symlink will fit into the inode data fork?
2224 * There can't be any attributes so we get the whole variable part.
2226 if (pathlen
<= XFS_LITINO(mp
))
2229 fs_blocks
= XFS_B_TO_FSB(mp
, pathlen
);
2230 resblks
= XFS_SYMLINK_SPACE_RES(mp
, link_name
->len
, fs_blocks
);
2231 error
= xfs_trans_reserve(tp
, resblks
, XFS_SYMLINK_LOG_RES(mp
), 0,
2232 XFS_TRANS_PERM_LOG_RES
, XFS_SYMLINK_LOG_COUNT
);
2233 if (error
== ENOSPC
&& fs_blocks
== 0) {
2235 error
= xfs_trans_reserve(tp
, 0, XFS_SYMLINK_LOG_RES(mp
), 0,
2236 XFS_TRANS_PERM_LOG_RES
, XFS_SYMLINK_LOG_COUNT
);
2243 xfs_ilock(dp
, XFS_ILOCK_EXCL
| XFS_ILOCK_PARENT
);
2244 unlock_dp_on_error
= B_TRUE
;
2247 * Check whether the directory allows new symlinks or not.
2249 if (dp
->i_d
.di_flags
& XFS_DIFLAG_NOSYMLINKS
) {
2250 error
= XFS_ERROR(EPERM
);
2255 * Reserve disk quota : blocks and inode.
2257 error
= xfs_trans_reserve_quota(tp
, mp
, udqp
, gdqp
, resblks
, 1, 0);
2262 * Check for ability to enter directory entry, if no space reserved.
2264 error
= xfs_dir_canenter(tp
, dp
, link_name
, resblks
);
2268 * Initialize the bmap freelist prior to calling either
2269 * bmapi or the directory create code.
2271 xfs_bmap_init(&free_list
, &first_block
);
2274 * Allocate an inode for the symlink.
2276 error
= xfs_dir_ialloc(&tp
, dp
, S_IFLNK
| (mode
& ~S_IFMT
),
2277 1, 0, credp
, prid
, resblks
> 0, &ip
, NULL
);
2279 if (error
== ENOSPC
)
2286 * An error after we've joined dp to the transaction will result in the
2287 * transaction cancel unlocking dp so don't do it explicitly in the
2291 xfs_trans_ijoin(tp
, dp
, XFS_ILOCK_EXCL
);
2292 unlock_dp_on_error
= B_FALSE
;
2295 * Also attach the dquot(s) to it, if applicable.
2297 xfs_qm_vop_create_dqattach(tp
, ip
, udqp
, gdqp
);
2300 resblks
-= XFS_IALLOC_SPACE_RES(mp
);
2302 * If the symlink will fit into the inode, write it inline.
2304 if (pathlen
<= XFS_IFORK_DSIZE(ip
)) {
2305 xfs_idata_realloc(ip
, pathlen
, XFS_DATA_FORK
);
2306 memcpy(ip
->i_df
.if_u1
.if_data
, target_path
, pathlen
);
2307 ip
->i_d
.di_size
= pathlen
;
2310 * The inode was initially created in extent format.
2312 ip
->i_df
.if_flags
&= ~(XFS_IFEXTENTS
| XFS_IFBROOT
);
2313 ip
->i_df
.if_flags
|= XFS_IFINLINE
;
2315 ip
->i_d
.di_format
= XFS_DINODE_FMT_LOCAL
;
2316 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_DDATA
| XFS_ILOG_CORE
);
2320 nmaps
= SYMLINK_MAPS
;
2322 error
= xfs_bmapi(tp
, ip
, first_fsb
, fs_blocks
,
2323 XFS_BMAPI_WRITE
| XFS_BMAPI_METADATA
,
2324 &first_block
, resblks
, mval
, &nmaps
,
2331 resblks
-= fs_blocks
;
2332 ip
->i_d
.di_size
= pathlen
;
2333 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
2335 cur_chunk
= target_path
;
2336 for (n
= 0; n
< nmaps
; n
++) {
2337 d
= XFS_FSB_TO_DADDR(mp
, mval
[n
].br_startblock
);
2338 byte_cnt
= XFS_FSB_TO_B(mp
, mval
[n
].br_blockcount
);
2339 bp
= xfs_trans_get_buf(tp
, mp
->m_ddev_targp
, d
,
2340 BTOBB(byte_cnt
), 0);
2341 ASSERT(bp
&& !XFS_BUF_GETERROR(bp
));
2342 if (pathlen
< byte_cnt
) {
2345 pathlen
-= byte_cnt
;
2347 memcpy(XFS_BUF_PTR(bp
), cur_chunk
, byte_cnt
);
2348 cur_chunk
+= byte_cnt
;
2350 xfs_trans_log_buf(tp
, bp
, 0, byte_cnt
- 1);
2355 * Create the directory entry for the symlink.
2357 error
= xfs_dir_createname(tp
, dp
, link_name
, ip
->i_ino
,
2358 &first_block
, &free_list
, resblks
);
2361 xfs_ichgtime(dp
, XFS_ICHGTIME_MOD
| XFS_ICHGTIME_CHG
);
2362 xfs_trans_log_inode(tp
, dp
, XFS_ILOG_CORE
);
2365 * If this is a synchronous mount, make sure that the
2366 * symlink transaction goes to disk before returning to
2369 if (mp
->m_flags
& (XFS_MOUNT_WSYNC
|XFS_MOUNT_DIRSYNC
)) {
2370 xfs_trans_set_sync(tp
);
2374 * xfs_trans_commit normally decrements the vnode ref count
2375 * when it unlocks the inode. Since we want to return the
2376 * vnode to the caller, we bump the vnode ref count now.
2380 error
= xfs_bmap_finish(&tp
, &free_list
, &committed
);
2384 error
= xfs_trans_commit(tp
, XFS_TRANS_RELEASE_LOG_RES
);
2385 xfs_qm_dqrele(udqp
);
2386 xfs_qm_dqrele(gdqp
);
2388 /* Fall through to std_return with error = 0 or errno from
2389 * xfs_trans_commit */
2391 if (DM_EVENT_ENABLED(dp
, DM_EVENT_POSTSYMLINK
)) {
2392 (void) XFS_SEND_NAMESP(mp
, DM_EVENT_POSTSYMLINK
,
2395 DM_RIGHT_NULL
, link_name
->name
,
2396 target_path
, 0, error
, 0);
2406 xfs_bmap_cancel(&free_list
);
2407 cancel_flags
|= XFS_TRANS_ABORT
;
2409 xfs_trans_cancel(tp
, cancel_flags
);
2410 xfs_qm_dqrele(udqp
);
2411 xfs_qm_dqrele(gdqp
);
2413 if (unlock_dp_on_error
)
2414 xfs_iunlock(dp
, XFS_ILOCK_EXCL
);
2425 xfs_mount_t
*mp
= ip
->i_mount
;
2429 if (!capable(CAP_SYS_ADMIN
))
2430 return XFS_ERROR(EPERM
);
2432 if (XFS_FORCED_SHUTDOWN(mp
))
2433 return XFS_ERROR(EIO
);
2435 tp
= xfs_trans_alloc(mp
, XFS_TRANS_SET_DMATTRS
);
2436 error
= xfs_trans_reserve(tp
, 0, XFS_ICHANGE_LOG_RES (mp
), 0, 0, 0);
2438 xfs_trans_cancel(tp
, 0);
2441 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
2442 xfs_trans_ijoin(tp
, ip
, XFS_ILOCK_EXCL
);
2444 ip
->i_d
.di_dmevmask
= evmask
;
2445 ip
->i_d
.di_dmstate
= state
;
2447 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
2449 error
= xfs_trans_commit(tp
, 0);
2455 * xfs_alloc_file_space()
2456 * This routine allocates disk space for the given file.
2458 * If alloc_type == 0, this request is for an ALLOCSP type
2459 * request which will change the file size. In this case, no
2460 * DMAPI event will be generated by the call. A TRUNCATE event
2461 * will be generated later by xfs_setattr.
2463 * If alloc_type != 0, this request is for a RESVSP type
2464 * request, and a DMAPI DM_EVENT_WRITE will be generated if the
2465 * lower block boundary byte address is less than the file's
2474 xfs_alloc_file_space(
2481 xfs_mount_t
*mp
= ip
->i_mount
;
2483 xfs_filblks_t allocated_fsb
;
2484 xfs_filblks_t allocatesize_fsb
;
2485 xfs_extlen_t extsz
, temp
;
2486 xfs_fileoff_t startoffset_fsb
;
2487 xfs_fsblock_t firstfsb
;
2493 xfs_bmbt_irec_t imaps
[1], *imapp
;
2494 xfs_bmap_free_t free_list
;
2495 uint qblocks
, resblks
, resrtextents
;
2499 xfs_itrace_entry(ip
);
2501 if (XFS_FORCED_SHUTDOWN(mp
))
2502 return XFS_ERROR(EIO
);
2504 error
= xfs_qm_dqattach(ip
, 0);
2509 return XFS_ERROR(EINVAL
);
2511 rt
= XFS_IS_REALTIME_INODE(ip
);
2512 extsz
= xfs_get_extsz_hint(ip
);
2517 bmapi_flag
= XFS_BMAPI_WRITE
| (alloc_type
? XFS_BMAPI_PREALLOC
: 0);
2518 startoffset_fsb
= XFS_B_TO_FSBT(mp
, offset
);
2519 allocatesize_fsb
= XFS_B_TO_FSB(mp
, count
);
2521 /* Generate a DMAPI event if needed. */
2522 if (alloc_type
!= 0 && offset
< ip
->i_size
&&
2523 (attr_flags
& XFS_ATTR_DMI
) == 0 &&
2524 DM_EVENT_ENABLED(ip
, DM_EVENT_WRITE
)) {
2525 xfs_off_t end_dmi_offset
;
2527 end_dmi_offset
= offset
+len
;
2528 if (end_dmi_offset
> ip
->i_size
)
2529 end_dmi_offset
= ip
->i_size
;
2530 error
= XFS_SEND_DATA(mp
, DM_EVENT_WRITE
, ip
, offset
,
2531 end_dmi_offset
- offset
, 0, NULL
);
2537 * Allocate file space until done or until there is an error
2540 while (allocatesize_fsb
&& !error
) {
2544 * Determine space reservations for data/realtime.
2546 if (unlikely(extsz
)) {
2547 s
= startoffset_fsb
;
2550 e
= startoffset_fsb
+ allocatesize_fsb
;
2551 if ((temp
= do_mod(startoffset_fsb
, extsz
)))
2553 if ((temp
= do_mod(e
, extsz
)))
2557 e
= allocatesize_fsb
;
2561 resrtextents
= qblocks
= (uint
)(e
- s
);
2562 resrtextents
/= mp
->m_sb
.sb_rextsize
;
2563 resblks
= XFS_DIOSTRAT_SPACE_RES(mp
, 0);
2564 quota_flag
= XFS_QMOPT_RES_RTBLKS
;
2567 resblks
= qblocks
= \
2568 XFS_DIOSTRAT_SPACE_RES(mp
, (uint
)(e
- s
));
2569 quota_flag
= XFS_QMOPT_RES_REGBLKS
;
2573 * Allocate and setup the transaction.
2575 tp
= xfs_trans_alloc(mp
, XFS_TRANS_DIOSTRAT
);
2576 error
= xfs_trans_reserve(tp
, resblks
,
2577 XFS_WRITE_LOG_RES(mp
), resrtextents
,
2578 XFS_TRANS_PERM_LOG_RES
,
2579 XFS_WRITE_LOG_COUNT
);
2581 * Check for running out of space
2585 * Free the transaction structure.
2587 ASSERT(error
== ENOSPC
|| XFS_FORCED_SHUTDOWN(mp
));
2588 xfs_trans_cancel(tp
, 0);
2591 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
2592 error
= xfs_trans_reserve_quota_nblks(tp
, ip
, qblocks
,
2597 xfs_trans_ijoin(tp
, ip
, XFS_ILOCK_EXCL
);
2598 xfs_trans_ihold(tp
, ip
);
2601 * Issue the xfs_bmapi() call to allocate the blocks
2603 xfs_bmap_init(&free_list
, &firstfsb
);
2604 error
= xfs_bmapi(tp
, ip
, startoffset_fsb
,
2605 allocatesize_fsb
, bmapi_flag
,
2606 &firstfsb
, 0, imapp
, &nimaps
,
2613 * Complete the transaction
2615 error
= xfs_bmap_finish(&tp
, &free_list
, &committed
);
2620 error
= xfs_trans_commit(tp
, XFS_TRANS_RELEASE_LOG_RES
);
2621 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
2626 allocated_fsb
= imapp
->br_blockcount
;
2629 error
= XFS_ERROR(ENOSPC
);
2633 startoffset_fsb
+= allocated_fsb
;
2634 allocatesize_fsb
-= allocated_fsb
;
2637 if (error
== ENOSPC
&& (attr_flags
& XFS_ATTR_DMI
) == 0 &&
2638 DM_EVENT_ENABLED(ip
, DM_EVENT_NOSPACE
)) {
2639 error
= XFS_SEND_NAMESP(mp
, DM_EVENT_NOSPACE
,
2642 NULL
, NULL
, 0, 0, 0); /* Delay flag intentionally unused */
2644 goto retry
; /* Maybe DMAPI app. has made space */
2645 /* else fall through with error from XFS_SEND_DATA */
2650 error0
: /* Cancel bmap, unlock inode, unreserve quota blocks, cancel trans */
2651 xfs_bmap_cancel(&free_list
);
2652 xfs_trans_unreserve_quota_nblks(tp
, ip
, qblocks
, 0, quota_flag
);
2654 error1
: /* Just cancel transaction */
2655 xfs_trans_cancel(tp
, XFS_TRANS_RELEASE_LOG_RES
| XFS_TRANS_ABORT
);
2656 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
2657 goto dmapi_enospc_check
;
2661 * Zero file bytes between startoff and endoff inclusive.
2662 * The iolock is held exclusive and no blocks are buffered.
2664 * This function is used by xfs_free_file_space() to zero
2665 * partial blocks when the range to free is not block aligned.
2666 * When unreserving space with boundaries that are not block
2667 * aligned we round up the start and round down the end
2668 * boundaries and then use this function to zero the parts of
2669 * the blocks that got dropped during the rounding.
2672 xfs_zero_remaining_bytes(
2677 xfs_bmbt_irec_t imap
;
2678 xfs_fileoff_t offset_fsb
;
2679 xfs_off_t lastoffset
;
2682 xfs_mount_t
*mp
= ip
->i_mount
;
2687 * Avoid doing I/O beyond eof - it's not necessary
2688 * since nothing can read beyond eof. The space will
2689 * be zeroed when the file is extended anyway.
2691 if (startoff
>= ip
->i_size
)
2694 if (endoff
> ip
->i_size
)
2695 endoff
= ip
->i_size
;
2697 bp
= xfs_buf_get_noaddr(mp
->m_sb
.sb_blocksize
,
2698 XFS_IS_REALTIME_INODE(ip
) ?
2699 mp
->m_rtdev_targp
: mp
->m_ddev_targp
);
2701 return XFS_ERROR(ENOMEM
);
2703 for (offset
= startoff
; offset
<= endoff
; offset
= lastoffset
+ 1) {
2704 offset_fsb
= XFS_B_TO_FSBT(mp
, offset
);
2706 error
= xfs_bmapi(NULL
, ip
, offset_fsb
, 1, 0,
2707 NULL
, 0, &imap
, &nimap
, NULL
, NULL
);
2708 if (error
|| nimap
< 1)
2710 ASSERT(imap
.br_blockcount
>= 1);
2711 ASSERT(imap
.br_startoff
== offset_fsb
);
2712 lastoffset
= XFS_FSB_TO_B(mp
, imap
.br_startoff
+ 1) - 1;
2713 if (lastoffset
> endoff
)
2714 lastoffset
= endoff
;
2715 if (imap
.br_startblock
== HOLESTARTBLOCK
)
2717 ASSERT(imap
.br_startblock
!= DELAYSTARTBLOCK
);
2718 if (imap
.br_state
== XFS_EXT_UNWRITTEN
)
2721 XFS_BUF_UNWRITE(bp
);
2723 XFS_BUF_SET_ADDR(bp
, xfs_fsb_to_db(ip
, imap
.br_startblock
));
2725 error
= xfs_iowait(bp
);
2727 xfs_ioerror_alert("xfs_zero_remaining_bytes(read)",
2728 mp
, bp
, XFS_BUF_ADDR(bp
));
2731 memset(XFS_BUF_PTR(bp
) +
2732 (offset
- XFS_FSB_TO_B(mp
, imap
.br_startoff
)),
2733 0, lastoffset
- offset
+ 1);
2738 error
= xfs_iowait(bp
);
2740 xfs_ioerror_alert("xfs_zero_remaining_bytes(write)",
2741 mp
, bp
, XFS_BUF_ADDR(bp
));
2750 * xfs_free_file_space()
2751 * This routine frees disk space for the given file.
2753 * This routine is only called by xfs_change_file_space
2754 * for an UNRESVSP type call.
2762 xfs_free_file_space(
2770 xfs_off_t end_dmi_offset
;
2771 xfs_fileoff_t endoffset_fsb
;
2773 xfs_fsblock_t firstfsb
;
2774 xfs_bmap_free_t free_list
;
2775 xfs_bmbt_irec_t imap
;
2783 xfs_fileoff_t startoffset_fsb
;
2785 int need_iolock
= 1;
2789 xfs_itrace_entry(ip
);
2791 error
= xfs_qm_dqattach(ip
, 0);
2796 if (len
<= 0) /* if nothing being freed */
2798 rt
= XFS_IS_REALTIME_INODE(ip
);
2799 startoffset_fsb
= XFS_B_TO_FSB(mp
, offset
);
2800 end_dmi_offset
= offset
+ len
;
2801 endoffset_fsb
= XFS_B_TO_FSBT(mp
, end_dmi_offset
);
2803 if (offset
< ip
->i_size
&& (attr_flags
& XFS_ATTR_DMI
) == 0 &&
2804 DM_EVENT_ENABLED(ip
, DM_EVENT_WRITE
)) {
2805 if (end_dmi_offset
> ip
->i_size
)
2806 end_dmi_offset
= ip
->i_size
;
2807 error
= XFS_SEND_DATA(mp
, DM_EVENT_WRITE
, ip
,
2808 offset
, end_dmi_offset
- offset
,
2809 AT_DELAY_FLAG(attr_flags
), NULL
);
2814 if (attr_flags
& XFS_ATTR_NOLOCK
)
2817 xfs_ilock(ip
, XFS_IOLOCK_EXCL
);
2818 /* wait for the completion of any pending DIOs */
2822 rounding
= max_t(uint
, 1 << mp
->m_sb
.sb_blocklog
, PAGE_CACHE_SIZE
);
2823 ioffset
= offset
& ~(rounding
- 1);
2825 if (VN_CACHED(VFS_I(ip
)) != 0) {
2826 xfs_inval_cached_trace(ip
, ioffset
, -1, ioffset
, -1);
2827 error
= xfs_flushinval_pages(ip
, ioffset
, -1, FI_REMAPF_LOCKED
);
2829 goto out_unlock_iolock
;
2833 * Need to zero the stuff we're not freeing, on disk.
2834 * If it's a realtime file & can't use unwritten extents then we
2835 * actually need to zero the extent edges. Otherwise xfs_bunmapi
2836 * will take care of it for us.
2838 if (rt
&& !xfs_sb_version_hasextflgbit(&mp
->m_sb
)) {
2840 error
= xfs_bmapi(NULL
, ip
, startoffset_fsb
,
2841 1, 0, NULL
, 0, &imap
, &nimap
, NULL
, NULL
);
2843 goto out_unlock_iolock
;
2844 ASSERT(nimap
== 0 || nimap
== 1);
2845 if (nimap
&& imap
.br_startblock
!= HOLESTARTBLOCK
) {
2848 ASSERT(imap
.br_startblock
!= DELAYSTARTBLOCK
);
2849 block
= imap
.br_startblock
;
2850 mod
= do_div(block
, mp
->m_sb
.sb_rextsize
);
2852 startoffset_fsb
+= mp
->m_sb
.sb_rextsize
- mod
;
2855 error
= xfs_bmapi(NULL
, ip
, endoffset_fsb
- 1,
2856 1, 0, NULL
, 0, &imap
, &nimap
, NULL
, NULL
);
2858 goto out_unlock_iolock
;
2859 ASSERT(nimap
== 0 || nimap
== 1);
2860 if (nimap
&& imap
.br_startblock
!= HOLESTARTBLOCK
) {
2861 ASSERT(imap
.br_startblock
!= DELAYSTARTBLOCK
);
2863 if (mod
&& (mod
!= mp
->m_sb
.sb_rextsize
))
2864 endoffset_fsb
-= mod
;
2867 if ((done
= (endoffset_fsb
<= startoffset_fsb
)))
2869 * One contiguous piece to clear
2871 error
= xfs_zero_remaining_bytes(ip
, offset
, offset
+ len
- 1);
2874 * Some full blocks, possibly two pieces to clear
2876 if (offset
< XFS_FSB_TO_B(mp
, startoffset_fsb
))
2877 error
= xfs_zero_remaining_bytes(ip
, offset
,
2878 XFS_FSB_TO_B(mp
, startoffset_fsb
) - 1);
2880 XFS_FSB_TO_B(mp
, endoffset_fsb
) < offset
+ len
)
2881 error
= xfs_zero_remaining_bytes(ip
,
2882 XFS_FSB_TO_B(mp
, endoffset_fsb
),
2887 * free file space until done or until there is an error
2889 resblks
= XFS_DIOSTRAT_SPACE_RES(mp
, 0);
2890 while (!error
&& !done
) {
2893 * allocate and setup the transaction. Allow this
2894 * transaction to dip into the reserve blocks to ensure
2895 * the freeing of the space succeeds at ENOSPC.
2897 tp
= xfs_trans_alloc(mp
, XFS_TRANS_DIOSTRAT
);
2898 tp
->t_flags
|= XFS_TRANS_RESERVE
;
2899 error
= xfs_trans_reserve(tp
,
2901 XFS_WRITE_LOG_RES(mp
),
2903 XFS_TRANS_PERM_LOG_RES
,
2904 XFS_WRITE_LOG_COUNT
);
2907 * check for running out of space
2911 * Free the transaction structure.
2913 ASSERT(error
== ENOSPC
|| XFS_FORCED_SHUTDOWN(mp
));
2914 xfs_trans_cancel(tp
, 0);
2917 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
2918 error
= xfs_trans_reserve_quota(tp
, mp
,
2919 ip
->i_udquot
, ip
->i_gdquot
,
2920 resblks
, 0, XFS_QMOPT_RES_REGBLKS
);
2924 xfs_trans_ijoin(tp
, ip
, XFS_ILOCK_EXCL
);
2925 xfs_trans_ihold(tp
, ip
);
2928 * issue the bunmapi() call to free the blocks
2930 xfs_bmap_init(&free_list
, &firstfsb
);
2931 error
= xfs_bunmapi(tp
, ip
, startoffset_fsb
,
2932 endoffset_fsb
- startoffset_fsb
,
2933 0, 2, &firstfsb
, &free_list
, NULL
, &done
);
2939 * complete the transaction
2941 error
= xfs_bmap_finish(&tp
, &free_list
, &committed
);
2946 error
= xfs_trans_commit(tp
, XFS_TRANS_RELEASE_LOG_RES
);
2947 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
2952 xfs_iunlock(ip
, XFS_IOLOCK_EXCL
);
2956 xfs_bmap_cancel(&free_list
);
2958 xfs_trans_cancel(tp
, XFS_TRANS_RELEASE_LOG_RES
| XFS_TRANS_ABORT
);
2959 xfs_iunlock(ip
, need_iolock
? (XFS_ILOCK_EXCL
| XFS_IOLOCK_EXCL
) :
2965 * xfs_change_file_space()
2966 * This routine allocates or frees disk space for the given file.
2967 * The user specified parameters are checked for alignment and size
2976 xfs_change_file_space(
2983 xfs_mount_t
*mp
= ip
->i_mount
;
2988 xfs_off_t startoffset
;
2993 xfs_itrace_entry(ip
);
2995 if (!S_ISREG(ip
->i_d
.di_mode
))
2996 return XFS_ERROR(EINVAL
);
2998 switch (bf
->l_whence
) {
2999 case 0: /*SEEK_SET*/
3001 case 1: /*SEEK_CUR*/
3002 bf
->l_start
+= offset
;
3004 case 2: /*SEEK_END*/
3005 bf
->l_start
+= ip
->i_size
;
3008 return XFS_ERROR(EINVAL
);
3011 llen
= bf
->l_len
> 0 ? bf
->l_len
- 1 : bf
->l_len
;
3013 if ( (bf
->l_start
< 0)
3014 || (bf
->l_start
> XFS_MAXIOFFSET(mp
))
3015 || (bf
->l_start
+ llen
< 0)
3016 || (bf
->l_start
+ llen
> XFS_MAXIOFFSET(mp
)))
3017 return XFS_ERROR(EINVAL
);
3021 startoffset
= bf
->l_start
;
3025 * XFS_IOC_RESVSP and XFS_IOC_UNRESVSP will reserve or unreserve
3027 * These calls do NOT zero the data space allocated to the file,
3028 * nor do they change the file size.
3030 * XFS_IOC_ALLOCSP and XFS_IOC_FREESP will allocate and free file
3032 * These calls cause the new file data to be zeroed and the file
3033 * size to be changed.
3035 setprealloc
= clrprealloc
= 0;
3038 case XFS_IOC_RESVSP
:
3039 case XFS_IOC_RESVSP64
:
3040 error
= xfs_alloc_file_space(ip
, startoffset
, bf
->l_len
,
3047 case XFS_IOC_UNRESVSP
:
3048 case XFS_IOC_UNRESVSP64
:
3049 if ((error
= xfs_free_file_space(ip
, startoffset
, bf
->l_len
,
3054 case XFS_IOC_ALLOCSP
:
3055 case XFS_IOC_ALLOCSP64
:
3056 case XFS_IOC_FREESP
:
3057 case XFS_IOC_FREESP64
:
3058 if (startoffset
> fsize
) {
3059 error
= xfs_alloc_file_space(ip
, fsize
,
3060 startoffset
- fsize
, 0, attr_flags
);
3065 iattr
.ia_valid
= ATTR_SIZE
;
3066 iattr
.ia_size
= startoffset
;
3068 error
= xfs_setattr(ip
, &iattr
, attr_flags
);
3078 return XFS_ERROR(EINVAL
);
3082 * update the inode timestamp, mode, and prealloc flag bits
3084 tp
= xfs_trans_alloc(mp
, XFS_TRANS_WRITEID
);
3086 if ((error
= xfs_trans_reserve(tp
, 0, XFS_WRITEID_LOG_RES(mp
),
3089 xfs_trans_cancel(tp
, 0);
3093 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
3095 xfs_trans_ijoin(tp
, ip
, XFS_ILOCK_EXCL
);
3096 xfs_trans_ihold(tp
, ip
);
3098 if ((attr_flags
& XFS_ATTR_DMI
) == 0) {
3099 ip
->i_d
.di_mode
&= ~S_ISUID
;
3102 * Note that we don't have to worry about mandatory
3103 * file locking being disabled here because we only
3104 * clear the S_ISGID bit if the Group execute bit is
3105 * on, but if it was on then mandatory locking wouldn't
3106 * have been enabled.
3108 if (ip
->i_d
.di_mode
& S_IXGRP
)
3109 ip
->i_d
.di_mode
&= ~S_ISGID
;
3111 xfs_ichgtime(ip
, XFS_ICHGTIME_MOD
| XFS_ICHGTIME_CHG
);
3114 ip
->i_d
.di_flags
|= XFS_DIFLAG_PREALLOC
;
3115 else if (clrprealloc
)
3116 ip
->i_d
.di_flags
&= ~XFS_DIFLAG_PREALLOC
;
3118 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
3119 xfs_trans_set_sync(tp
);
3121 error
= xfs_trans_commit(tp
, 0);
3123 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);