2 * Copyright (c) 2000-2005 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
23 #include "xfs_trans.h"
26 #include "xfs_alloc.h"
27 #include "xfs_quota.h"
28 #include "xfs_mount.h"
29 #include "xfs_bmap_btree.h"
30 #include "xfs_ialloc_btree.h"
31 #include "xfs_dinode.h"
32 #include "xfs_inode.h"
33 #include "xfs_ialloc.h"
34 #include "xfs_itable.h"
35 #include "xfs_rtalloc.h"
36 #include "xfs_error.h"
39 #include "xfs_buf_item.h"
40 #include "xfs_trans_space.h"
41 #include "xfs_utils.h"
43 #include "xfs_trace.h"
46 * The global quota manager. There is only one of these for the entire
47 * system, _not_ one per file system. XQM keeps track of the overall
48 * quota functionality, including maintaining the freelist and hash
51 struct mutex xfs_Gqm_lock
;
52 struct xfs_qm
*xfs_Gqm
;
55 kmem_zone_t
*qm_dqzone
;
56 kmem_zone_t
*qm_dqtrxzone
;
58 static cred_t xfs_zerocr
;
60 STATIC
void xfs_qm_list_init(xfs_dqlist_t
*, char *, int);
61 STATIC
void xfs_qm_list_destroy(xfs_dqlist_t
*);
63 STATIC
int xfs_qm_init_quotainos(xfs_mount_t
*);
64 STATIC
int xfs_qm_init_quotainfo(xfs_mount_t
*);
65 STATIC
int xfs_qm_shake(struct shrinker
*, int, gfp_t
);
67 static struct shrinker xfs_qm_shaker
= {
68 .shrink
= xfs_qm_shake
,
69 .seeks
= DEFAULT_SEEKS
,
73 extern struct mutex qcheck_lock
;
78 xfs_qm_dquot_list_print(
84 list_for_each_entry(dqp
, &mp
->m_quotainfo
->qi_dqlist_lock
, qi_mplist
) {
85 cmn_err(CE_DEBUG
, " %d. \"%d (%s)\" "
86 "bcnt = %lld, icnt = %lld, refs = %d",
87 i
++, be32_to_cpu(dqp
->q_core
.d_id
),
88 DQFLAGTO_TYPESTR(dqp
),
89 (long long)be64_to_cpu(dqp
->q_core
.d_bcount
),
90 (long long)be64_to_cpu(dqp
->q_core
.d_icount
),
95 static void xfs_qm_dquot_list_print(struct xfs_mount
*mp
) { }
99 * Initialize the XQM structure.
100 * Note that there is not one quota manager per file system.
102 STATIC
struct xfs_qm
*
105 xfs_dqhash_t
*udqhash
, *gdqhash
;
111 * Initialize the dquot hash tables.
113 udqhash
= kmem_zalloc_greedy(&hsize
,
114 XFS_QM_HASHSIZE_LOW
* sizeof(xfs_dqhash_t
),
115 XFS_QM_HASHSIZE_HIGH
* sizeof(xfs_dqhash_t
));
119 gdqhash
= kmem_zalloc_large(hsize
);
121 goto out_free_udqhash
;
123 hsize
/= sizeof(xfs_dqhash_t
);
126 xqm
= kmem_zalloc(sizeof(xfs_qm_t
), KM_SLEEP
);
127 xqm
->qm_dqhashmask
= hsize
- 1;
128 xqm
->qm_usr_dqhtable
= udqhash
;
129 xqm
->qm_grp_dqhtable
= gdqhash
;
130 ASSERT(xqm
->qm_usr_dqhtable
!= NULL
);
131 ASSERT(xqm
->qm_grp_dqhtable
!= NULL
);
133 for (i
= 0; i
< hsize
; i
++) {
134 xfs_qm_list_init(&(xqm
->qm_usr_dqhtable
[i
]), "uxdqh", i
);
135 xfs_qm_list_init(&(xqm
->qm_grp_dqhtable
[i
]), "gxdqh", i
);
139 * Freelist of all dquots of all file systems
141 INIT_LIST_HEAD(&xqm
->qm_dqfrlist
);
142 xqm
->qm_dqfrlist_cnt
= 0;
143 mutex_init(&xqm
->qm_dqfrlist_lock
);
146 * dquot zone. we register our own low-memory callback.
149 xqm
->qm_dqzone
= kmem_zone_init(sizeof(xfs_dquot_t
),
151 qm_dqzone
= xqm
->qm_dqzone
;
153 xqm
->qm_dqzone
= qm_dqzone
;
155 register_shrinker(&xfs_qm_shaker
);
158 * The t_dqinfo portion of transactions.
161 xqm
->qm_dqtrxzone
= kmem_zone_init(sizeof(xfs_dquot_acct_t
),
163 qm_dqtrxzone
= xqm
->qm_dqtrxzone
;
165 xqm
->qm_dqtrxzone
= qm_dqtrxzone
;
167 atomic_set(&xqm
->qm_totaldquots
, 0);
168 xqm
->qm_dqfree_ratio
= XFS_QM_DQFREE_RATIO
;
171 mutex_init(&qcheck_lock
);
176 kmem_free_large(udqhash
);
182 * Destroy the global quota manager when its reference count goes to zero.
188 struct xfs_dquot
*dqp
, *n
;
192 ASSERT(xqm
->qm_nrefs
== 0);
193 unregister_shrinker(&xfs_qm_shaker
);
194 hsize
= xqm
->qm_dqhashmask
+ 1;
195 for (i
= 0; i
< hsize
; i
++) {
196 xfs_qm_list_destroy(&(xqm
->qm_usr_dqhtable
[i
]));
197 xfs_qm_list_destroy(&(xqm
->qm_grp_dqhtable
[i
]));
199 kmem_free_large(xqm
->qm_usr_dqhtable
);
200 kmem_free_large(xqm
->qm_grp_dqhtable
);
201 xqm
->qm_usr_dqhtable
= NULL
;
202 xqm
->qm_grp_dqhtable
= NULL
;
203 xqm
->qm_dqhashmask
= 0;
206 mutex_lock(&xqm
->qm_dqfrlist_lock
);
207 list_for_each_entry_safe(dqp
, n
, &xqm
->qm_dqfrlist
, q_freelist
) {
210 cmn_err(CE_DEBUG
, "FREELIST destroy 0x%p", dqp
);
212 list_del_init(&dqp
->q_freelist
);
213 xfs_Gqm
->qm_dqfrlist_cnt
--;
215 xfs_qm_dqdestroy(dqp
);
217 mutex_unlock(&xqm
->qm_dqfrlist_lock
);
218 mutex_destroy(&xqm
->qm_dqfrlist_lock
);
220 mutex_destroy(&qcheck_lock
);
226 * Called at mount time to let XQM know that another file system is
227 * starting quotas. This isn't crucial information as the individual mount
228 * structures are pretty independent, but it helps the XQM keep a
229 * global view of what's going on.
233 xfs_qm_hold_quotafs_ref(
234 struct xfs_mount
*mp
)
237 * Need to lock the xfs_Gqm structure for things like this. For example,
238 * the structure could disappear between the entry to this routine and
239 * a HOLD operation if not locked.
241 mutex_lock(&xfs_Gqm_lock
);
244 xfs_Gqm
= xfs_Gqm_init();
246 mutex_unlock(&xfs_Gqm_lock
);
252 * We can keep a list of all filesystems with quotas mounted for
253 * debugging and statistical purposes, but ...
254 * Just take a reference and get out.
257 mutex_unlock(&xfs_Gqm_lock
);
264 * Release the reference that a filesystem took at mount time,
265 * so that we know when we need to destroy the entire quota manager.
269 xfs_qm_rele_quotafs_ref(
270 struct xfs_mount
*mp
)
272 xfs_dquot_t
*dqp
, *n
;
275 ASSERT(xfs_Gqm
->qm_nrefs
> 0);
278 * Go thru the freelist and destroy all inactive dquots.
280 mutex_lock(&xfs_Gqm
->qm_dqfrlist_lock
);
282 list_for_each_entry_safe(dqp
, n
, &xfs_Gqm
->qm_dqfrlist
, q_freelist
) {
284 if (dqp
->dq_flags
& XFS_DQ_INACTIVE
) {
285 ASSERT(dqp
->q_mount
== NULL
);
286 ASSERT(! XFS_DQ_IS_DIRTY(dqp
));
287 ASSERT(list_empty(&dqp
->q_hashlist
));
288 ASSERT(list_empty(&dqp
->q_mplist
));
289 list_del_init(&dqp
->q_freelist
);
290 xfs_Gqm
->qm_dqfrlist_cnt
--;
292 xfs_qm_dqdestroy(dqp
);
297 mutex_unlock(&xfs_Gqm
->qm_dqfrlist_lock
);
300 * Destroy the entire XQM. If somebody mounts with quotaon, this'll
303 mutex_lock(&xfs_Gqm_lock
);
304 if (--xfs_Gqm
->qm_nrefs
== 0) {
305 xfs_qm_destroy(xfs_Gqm
);
308 mutex_unlock(&xfs_Gqm_lock
);
312 * Just destroy the quotainfo structure.
316 struct xfs_mount
*mp
)
318 if (mp
->m_quotainfo
) {
319 xfs_qm_dqpurge_all(mp
, XFS_QMOPT_QUOTALL
);
320 xfs_qm_destroy_quotainfo(mp
);
326 * This is called from xfs_mountfs to start quotas and initialize all
327 * necessary data structures like quotainfo. This is also responsible for
328 * running a quotacheck as necessary. We are guaranteed that the superblock
329 * is consistently read in at this point.
331 * If we fail here, the mount will continue with quota turned off. We don't
332 * need to inidicate success or failure at all.
342 * If quotas on realtime volumes is not supported, we disable
343 * quotas immediately.
345 if (mp
->m_sb
.sb_rextents
) {
347 "Cannot turn on quotas for realtime filesystem %s",
353 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
356 * Allocate the quotainfo structure inside the mount struct, and
357 * create quotainode(s), and change/rev superblock if necessary.
359 error
= xfs_qm_init_quotainfo(mp
);
362 * We must turn off quotas.
364 ASSERT(mp
->m_quotainfo
== NULL
);
369 * If any of the quotas are not consistent, do a quotacheck.
371 if (XFS_QM_NEED_QUOTACHECK(mp
)) {
372 error
= xfs_qm_quotacheck(mp
);
374 /* Quotacheck failed and disabled quotas. */
379 * If one type of quotas is off, then it will lose its
380 * quotachecked status, since we won't be doing accounting for
383 if (!XFS_IS_UQUOTA_ON(mp
))
384 mp
->m_qflags
&= ~XFS_UQUOTA_CHKD
;
385 if (!(XFS_IS_GQUOTA_ON(mp
) || XFS_IS_PQUOTA_ON(mp
)))
386 mp
->m_qflags
&= ~XFS_OQUOTA_CHKD
;
389 spin_lock(&mp
->m_sb_lock
);
390 sbf
= mp
->m_sb
.sb_qflags
;
391 mp
->m_sb
.sb_qflags
= mp
->m_qflags
& XFS_MOUNT_QUOTA_ALL
;
392 spin_unlock(&mp
->m_sb_lock
);
394 if (sbf
!= (mp
->m_qflags
& XFS_MOUNT_QUOTA_ALL
)) {
395 if (xfs_qm_write_sb_changes(mp
, XFS_SB_QFLAGS
)) {
397 * We could only have been turning quotas off.
398 * We aren't in very good shape actually because
399 * the incore structures are convinced that quotas are
400 * off, but the on disk superblock doesn't know that !
402 ASSERT(!(XFS_IS_QUOTA_RUNNING(mp
)));
403 xfs_fs_cmn_err(CE_ALERT
, mp
,
404 "XFS mount_quotas: Superblock update failed!");
409 xfs_fs_cmn_err(CE_WARN
, mp
,
410 "Failed to initialize disk quotas.");
415 if (XFS_IS_QUOTA_ON(mp
))
416 xfs_qm_internalqcheck(mp
);
421 * Called from the vfsops layer.
424 xfs_qm_unmount_quotas(
428 * Release the dquots that root inode, et al might be holding,
429 * before we flush quotas and blow away the quotainfo structure.
431 ASSERT(mp
->m_rootip
);
432 xfs_qm_dqdetach(mp
->m_rootip
);
434 xfs_qm_dqdetach(mp
->m_rbmip
);
436 xfs_qm_dqdetach(mp
->m_rsumip
);
439 * Release the quota inodes.
441 if (mp
->m_quotainfo
) {
442 if (mp
->m_quotainfo
->qi_uquotaip
) {
443 IRELE(mp
->m_quotainfo
->qi_uquotaip
);
444 mp
->m_quotainfo
->qi_uquotaip
= NULL
;
446 if (mp
->m_quotainfo
->qi_gquotaip
) {
447 IRELE(mp
->m_quotainfo
->qi_gquotaip
);
448 mp
->m_quotainfo
->qi_gquotaip
= NULL
;
454 * Flush all dquots of the given file system to disk. The dquots are
455 * _not_ purged from memory here, just their data written to disk.
459 struct xfs_mount
*mp
,
462 struct xfs_quotainfo
*q
= mp
->m_quotainfo
;
464 struct xfs_dquot
*dqp
;
472 mutex_lock(&q
->qi_dqlist_lock
);
473 list_for_each_entry(dqp
, &q
->qi_dqlist
, q_mplist
) {
475 if (! XFS_DQ_IS_DIRTY(dqp
)) {
480 recl
= q
->qi_dqreclaims
;
481 if (!xfs_dqflock_nowait(dqp
)) {
483 * If we can't grab the flush lock then check
484 * to see if the dquot has been flushed delayed
485 * write. If so, grab its buffer and send it
486 * out immediately. We'll be able to acquire
487 * the flush lock when the I/O completes.
489 xfs_qm_dqflock_pushbuf_wait(dqp
);
492 * Let go of the mplist lock. We don't want to hold it
493 * across a disk write.
495 mutex_unlock(&q
->qi_dqlist_lock
);
496 error
= xfs_qm_dqflush(dqp
, sync_mode
);
501 mutex_lock(&q
->qi_dqlist_lock
);
502 if (recl
!= q
->qi_dqreclaims
) {
503 mutex_unlock(&q
->qi_dqlist_lock
);
508 mutex_unlock(&q
->qi_dqlist_lock
);
513 * Release the group dquot pointers the user dquots may be
514 * carrying around as a hint. mplist is locked on entry and exit.
517 xfs_qm_detach_gdquots(
518 struct xfs_mount
*mp
)
520 struct xfs_quotainfo
*q
= mp
->m_quotainfo
;
521 struct xfs_dquot
*dqp
, *gdqp
;
525 ASSERT(mutex_is_locked(&q
->qi_dqlist_lock
));
526 list_for_each_entry(dqp
, &q
->qi_dqlist
, q_mplist
) {
528 if ((gdqp
= dqp
->q_gdquot
)) {
530 dqp
->q_gdquot
= NULL
;
536 * Can't hold the mplist lock across a dqput.
537 * XXXmust convert to marker based iterations here.
539 nrecl
= q
->qi_dqreclaims
;
540 mutex_unlock(&q
->qi_dqlist_lock
);
543 mutex_lock(&q
->qi_dqlist_lock
);
544 if (nrecl
!= q
->qi_dqreclaims
)
551 * Go through all the incore dquots of this file system and take them
552 * off the mplist and hashlist, if the dquot type matches the dqtype
553 * parameter. This is used when turning off quota accounting for
554 * users and/or groups, as well as when the filesystem is unmounting.
558 struct xfs_mount
*mp
,
561 struct xfs_quotainfo
*q
= mp
->m_quotainfo
;
562 struct xfs_dquot
*dqp
, *n
;
570 dqtype
= (flags
& XFS_QMOPT_UQUOTA
) ? XFS_DQ_USER
: 0;
571 dqtype
|= (flags
& XFS_QMOPT_PQUOTA
) ? XFS_DQ_PROJ
: 0;
572 dqtype
|= (flags
& XFS_QMOPT_GQUOTA
) ? XFS_DQ_GROUP
: 0;
574 mutex_lock(&q
->qi_dqlist_lock
);
577 * In the first pass through all incore dquots of this filesystem,
578 * we release the group dquot pointers the user dquots may be
579 * carrying around as a hint. We need to do this irrespective of
580 * what's being turned off.
582 xfs_qm_detach_gdquots(mp
);
586 ASSERT(mutex_is_locked(&q
->qi_dqlist_lock
));
588 * Try to get rid of all of the unwanted dquots. The idea is to
589 * get them off mplist and hashlist, but leave them on freelist.
591 list_for_each_entry_safe(dqp
, n
, &q
->qi_dqlist
, q_mplist
) {
593 * It's OK to look at the type without taking dqlock here.
594 * We're holding the mplist lock here, and that's needed for
597 if ((dqp
->dq_flags
& dqtype
) == 0)
600 if (!mutex_trylock(&dqp
->q_hash
->qh_lock
)) {
601 nrecl
= q
->qi_dqreclaims
;
602 mutex_unlock(&q
->qi_dqlist_lock
);
603 mutex_lock(&dqp
->q_hash
->qh_lock
);
604 mutex_lock(&q
->qi_dqlist_lock
);
607 * XXXTheoretically, we can get into a very long
608 * ping pong game here.
609 * No one can be adding dquots to the mplist at
610 * this point, but somebody might be taking things off.
612 if (nrecl
!= q
->qi_dqreclaims
) {
613 mutex_unlock(&dqp
->q_hash
->qh_lock
);
619 * Take the dquot off the mplist and hashlist. It may remain on
620 * freelist in INACTIVE state.
622 nmisses
+= xfs_qm_dqpurge(dqp
);
624 mutex_unlock(&q
->qi_dqlist_lock
);
636 * Purge the dquot cache.
637 * None of the dquots should really be busy at this point.
639 if (mp
->m_quotainfo
) {
640 while ((ndquots
= xfs_qm_dqpurge_int(mp
, flags
))) {
653 xfs_dquot_t
*udqhint
, /* hint */
654 xfs_dquot_t
**IO_idqpp
)
659 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
663 * See if we already have it in the inode itself. IO_idqpp is
664 * &i_udquot or &i_gdquot. This made the code look weird, but
665 * made the logic a lot simpler.
669 trace_xfs_dqattach_found(dqp
);
674 * udqhint is the i_udquot field in inode, and is non-NULL only
675 * when the type arg is group/project. Its purpose is to save a
676 * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside
680 ASSERT(type
== XFS_DQ_GROUP
|| type
== XFS_DQ_PROJ
);
684 * No need to take dqlock to look at the id.
686 * The ID can't change until it gets reclaimed, and it won't
687 * be reclaimed as long as we have a ref from inode and we
690 dqp
= udqhint
->q_gdquot
;
691 if (dqp
&& be32_to_cpu(dqp
->q_core
.d_id
) == id
) {
694 ASSERT(*IO_idqpp
== NULL
);
698 xfs_dqunlock(udqhint
);
703 * We can't hold a dquot lock when we call the dqget code.
704 * We'll deadlock in no time, because of (not conforming to)
705 * lock ordering - the inodelock comes before any dquot lock,
706 * and we may drop and reacquire the ilock in xfs_qm_dqget().
708 xfs_dqunlock(udqhint
);
712 * Find the dquot from somewhere. This bumps the
713 * reference count of dquot and returns it locked.
714 * This can return ENOENT if dquot didn't exist on
715 * disk and we didn't ask it to allocate;
716 * ESRCH if quotas got turned off suddenly.
718 error
= xfs_qm_dqget(ip
->i_mount
, ip
, id
, type
, XFS_QMOPT_DOWARN
, &dqp
);
722 trace_xfs_dqattach_get(dqp
);
725 * dqget may have dropped and re-acquired the ilock, but it guarantees
726 * that the dquot returned is the one that should go in the inode.
735 * Given a udquot and gdquot, attach a ptr to the group dquot in the
736 * udquot as a hint for future lookups. The idea sounds simple, but the
737 * execution isn't, because the udquot might have a group dquot attached
738 * already and getting rid of that gets us into lock ordering constraints.
739 * The process is complicated more by the fact that the dquots may or may not
740 * be locked on entry.
743 xfs_qm_dqattach_grouphint(
751 if ((tmp
= udq
->q_gdquot
)) {
757 udq
->q_gdquot
= NULL
;
759 * We can't keep any dqlocks when calling dqrele,
760 * because the freelist lock comes before dqlocks.
764 * we took a hard reference once upon a time in dqget,
765 * so give it back when the udquot no longer points at it
766 * dqput() does the unlocking of the dquot.
774 ASSERT(XFS_DQ_IS_LOCKED(udq
));
778 ASSERT(XFS_DQ_IS_LOCKED(udq
));
779 ASSERT(XFS_DQ_IS_LOCKED(gdq
));
781 * Somebody could have attached a gdquot here,
782 * when we dropped the uqlock. If so, just do nothing.
784 if (udq
->q_gdquot
== NULL
) {
795 * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON
797 * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed.
798 * Inode may get unlocked and relocked in here, and the caller must deal with
802 xfs_qm_dqattach_locked(
806 xfs_mount_t
*mp
= ip
->i_mount
;
810 if (!XFS_IS_QUOTA_RUNNING(mp
) ||
811 !XFS_IS_QUOTA_ON(mp
) ||
812 !XFS_NOT_DQATTACHED(mp
, ip
) ||
813 ip
->i_ino
== mp
->m_sb
.sb_uquotino
||
814 ip
->i_ino
== mp
->m_sb
.sb_gquotino
)
817 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
819 if (XFS_IS_UQUOTA_ON(mp
)) {
820 error
= xfs_qm_dqattach_one(ip
, ip
->i_d
.di_uid
, XFS_DQ_USER
,
821 flags
& XFS_QMOPT_DQALLOC
,
822 NULL
, &ip
->i_udquot
);
828 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
829 if (XFS_IS_OQUOTA_ON(mp
)) {
830 error
= XFS_IS_GQUOTA_ON(mp
) ?
831 xfs_qm_dqattach_one(ip
, ip
->i_d
.di_gid
, XFS_DQ_GROUP
,
832 flags
& XFS_QMOPT_DQALLOC
,
833 ip
->i_udquot
, &ip
->i_gdquot
) :
834 xfs_qm_dqattach_one(ip
, ip
->i_d
.di_projid
, XFS_DQ_PROJ
,
835 flags
& XFS_QMOPT_DQALLOC
,
836 ip
->i_udquot
, &ip
->i_gdquot
);
838 * Don't worry about the udquot that we may have
839 * attached above. It'll get detached, if not already.
847 * Attach this group quota to the user quota as a hint.
848 * This WON'T, in general, result in a thrash.
851 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
852 ASSERT(ip
->i_udquot
);
853 ASSERT(ip
->i_gdquot
);
856 * We may or may not have the i_udquot locked at this point,
857 * but this check is OK since we don't depend on the i_gdquot to
858 * be accurate 100% all the time. It is just a hint, and this
859 * will succeed in general.
861 if (ip
->i_udquot
->q_gdquot
== ip
->i_gdquot
)
864 * Attach i_gdquot to the gdquot hint inside the i_udquot.
866 xfs_qm_dqattach_grouphint(ip
->i_udquot
, ip
->i_gdquot
);
872 if (XFS_IS_UQUOTA_ON(mp
))
873 ASSERT(ip
->i_udquot
);
874 if (XFS_IS_OQUOTA_ON(mp
))
875 ASSERT(ip
->i_gdquot
);
877 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
884 struct xfs_inode
*ip
,
889 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
890 error
= xfs_qm_dqattach_locked(ip
, flags
);
891 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
897 * Release dquots (and their references) if any.
898 * The inode should be locked EXCL except when this's called by
905 if (!(ip
->i_udquot
|| ip
->i_gdquot
))
908 trace_xfs_dquot_dqdetach(ip
);
910 ASSERT(ip
->i_ino
!= ip
->i_mount
->m_sb
.sb_uquotino
);
911 ASSERT(ip
->i_ino
!= ip
->i_mount
->m_sb
.sb_gquotino
);
913 xfs_qm_dqrele(ip
->i_udquot
);
917 xfs_qm_dqrele(ip
->i_gdquot
);
924 struct xfs_mount
*mp
,
927 struct xfs_quotainfo
*q
= mp
->m_quotainfo
;
929 struct xfs_dquot
*dqp
;
932 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
938 mutex_lock(&q
->qi_dqlist_lock
);
940 * dqpurge_all() also takes the mplist lock and iterate thru all dquots
941 * in quotaoff. However, if the QUOTA_ACTIVE bits are not cleared
942 * when we have the mplist lock, we know that dquots will be consistent
943 * as long as we have it locked.
945 if (!XFS_IS_QUOTA_ON(mp
)) {
946 mutex_unlock(&q
->qi_dqlist_lock
);
949 ASSERT(mutex_is_locked(&q
->qi_dqlist_lock
));
950 list_for_each_entry(dqp
, &q
->qi_dqlist
, q_mplist
) {
952 * If this is vfs_sync calling, then skip the dquots that
953 * don't 'seem' to be dirty. ie. don't acquire dqlock.
954 * This is very similar to what xfs_sync does with inodes.
956 if (flags
& SYNC_TRYLOCK
) {
957 if (!XFS_DQ_IS_DIRTY(dqp
))
959 if (!xfs_qm_dqlock_nowait(dqp
))
966 * Now, find out for sure if this dquot is dirty or not.
968 if (! XFS_DQ_IS_DIRTY(dqp
)) {
973 recl
= q
->qi_dqreclaims
;
974 if (!xfs_dqflock_nowait(dqp
)) {
975 if (flags
& SYNC_TRYLOCK
) {
980 * If we can't grab the flush lock then if the caller
981 * really wanted us to give this our best shot, so
982 * see if we can give a push to the buffer before we wait
983 * on the flush lock. At this point, we know that
984 * even though the dquot is being flushed,
985 * it has (new) dirty data.
987 xfs_qm_dqflock_pushbuf_wait(dqp
);
990 * Let go of the mplist lock. We don't want to hold it
991 * across a disk write
993 mutex_unlock(&q
->qi_dqlist_lock
);
994 error
= xfs_qm_dqflush(dqp
, flags
);
996 if (error
&& XFS_FORCED_SHUTDOWN(mp
))
997 return 0; /* Need to prevent umount failure */
1001 mutex_lock(&q
->qi_dqlist_lock
);
1002 if (recl
!= q
->qi_dqreclaims
) {
1003 if (++restarts
>= XFS_QM_SYNC_MAX_RESTARTS
)
1006 mutex_unlock(&q
->qi_dqlist_lock
);
1011 mutex_unlock(&q
->qi_dqlist_lock
);
1016 * The hash chains and the mplist use the same xfs_dqhash structure as
1017 * their list head, but we can take the mplist qh_lock and one of the
1018 * hash qh_locks at the same time without any problem as they aren't
1021 static struct lock_class_key xfs_quota_mplist_class
;
1024 * This initializes all the quota information that's kept in the
1028 xfs_qm_init_quotainfo(
1031 xfs_quotainfo_t
*qinf
;
1035 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1038 * Tell XQM that we exist as soon as possible.
1040 if ((error
= xfs_qm_hold_quotafs_ref(mp
))) {
1044 qinf
= mp
->m_quotainfo
= kmem_zalloc(sizeof(xfs_quotainfo_t
), KM_SLEEP
);
1047 * See if quotainodes are setup, and if not, allocate them,
1048 * and change the superblock accordingly.
1050 if ((error
= xfs_qm_init_quotainos(mp
))) {
1052 mp
->m_quotainfo
= NULL
;
1056 INIT_LIST_HEAD(&qinf
->qi_dqlist
);
1057 mutex_init(&qinf
->qi_dqlist_lock
);
1058 lockdep_set_class(&qinf
->qi_dqlist_lock
, &xfs_quota_mplist_class
);
1060 qinf
->qi_dqreclaims
= 0;
1062 /* mutex used to serialize quotaoffs */
1063 mutex_init(&qinf
->qi_quotaofflock
);
1065 /* Precalc some constants */
1066 qinf
->qi_dqchunklen
= XFS_FSB_TO_BB(mp
, XFS_DQUOT_CLUSTER_SIZE_FSB
);
1067 ASSERT(qinf
->qi_dqchunklen
);
1068 qinf
->qi_dqperchunk
= BBTOB(qinf
->qi_dqchunklen
);
1069 do_div(qinf
->qi_dqperchunk
, sizeof(xfs_dqblk_t
));
1071 mp
->m_qflags
|= (mp
->m_sb
.sb_qflags
& XFS_ALL_QUOTA_CHKD
);
1074 * We try to get the limits from the superuser's limits fields.
1075 * This is quite hacky, but it is standard quota practice.
1076 * We look at the USR dquot with id == 0 first, but if user quotas
1077 * are not enabled we goto the GRP dquot with id == 0.
1078 * We don't really care to keep separate default limits for user
1079 * and group quotas, at least not at this point.
1081 error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
)0,
1082 XFS_IS_UQUOTA_RUNNING(mp
) ? XFS_DQ_USER
:
1083 (XFS_IS_GQUOTA_RUNNING(mp
) ? XFS_DQ_GROUP
:
1085 XFS_QMOPT_DQSUSER
|XFS_QMOPT_DOWARN
,
1088 xfs_disk_dquot_t
*ddqp
= &dqp
->q_core
;
1091 * The warnings and timers set the grace period given to
1092 * a user or group before he or she can not perform any
1093 * more writing. If it is zero, a default is used.
1095 qinf
->qi_btimelimit
= ddqp
->d_btimer
?
1096 be32_to_cpu(ddqp
->d_btimer
) : XFS_QM_BTIMELIMIT
;
1097 qinf
->qi_itimelimit
= ddqp
->d_itimer
?
1098 be32_to_cpu(ddqp
->d_itimer
) : XFS_QM_ITIMELIMIT
;
1099 qinf
->qi_rtbtimelimit
= ddqp
->d_rtbtimer
?
1100 be32_to_cpu(ddqp
->d_rtbtimer
) : XFS_QM_RTBTIMELIMIT
;
1101 qinf
->qi_bwarnlimit
= ddqp
->d_bwarns
?
1102 be16_to_cpu(ddqp
->d_bwarns
) : XFS_QM_BWARNLIMIT
;
1103 qinf
->qi_iwarnlimit
= ddqp
->d_iwarns
?
1104 be16_to_cpu(ddqp
->d_iwarns
) : XFS_QM_IWARNLIMIT
;
1105 qinf
->qi_rtbwarnlimit
= ddqp
->d_rtbwarns
?
1106 be16_to_cpu(ddqp
->d_rtbwarns
) : XFS_QM_RTBWARNLIMIT
;
1107 qinf
->qi_bhardlimit
= be64_to_cpu(ddqp
->d_blk_hardlimit
);
1108 qinf
->qi_bsoftlimit
= be64_to_cpu(ddqp
->d_blk_softlimit
);
1109 qinf
->qi_ihardlimit
= be64_to_cpu(ddqp
->d_ino_hardlimit
);
1110 qinf
->qi_isoftlimit
= be64_to_cpu(ddqp
->d_ino_softlimit
);
1111 qinf
->qi_rtbhardlimit
= be64_to_cpu(ddqp
->d_rtb_hardlimit
);
1112 qinf
->qi_rtbsoftlimit
= be64_to_cpu(ddqp
->d_rtb_softlimit
);
1115 * We sent the XFS_QMOPT_DQSUSER flag to dqget because
1116 * we don't want this dquot cached. We haven't done a
1117 * quotacheck yet, and quotacheck doesn't like incore dquots.
1119 xfs_qm_dqdestroy(dqp
);
1121 qinf
->qi_btimelimit
= XFS_QM_BTIMELIMIT
;
1122 qinf
->qi_itimelimit
= XFS_QM_ITIMELIMIT
;
1123 qinf
->qi_rtbtimelimit
= XFS_QM_RTBTIMELIMIT
;
1124 qinf
->qi_bwarnlimit
= XFS_QM_BWARNLIMIT
;
1125 qinf
->qi_iwarnlimit
= XFS_QM_IWARNLIMIT
;
1126 qinf
->qi_rtbwarnlimit
= XFS_QM_RTBWARNLIMIT
;
1134 * Gets called when unmounting a filesystem or when all quotas get
1136 * This purges the quota inodes, destroys locks and frees itself.
1139 xfs_qm_destroy_quotainfo(
1142 xfs_quotainfo_t
*qi
;
1144 qi
= mp
->m_quotainfo
;
1146 ASSERT(xfs_Gqm
!= NULL
);
1149 * Release the reference that XQM kept, so that we know
1150 * when the XQM structure should be freed. We cannot assume
1151 * that xfs_Gqm is non-null after this point.
1153 xfs_qm_rele_quotafs_ref(mp
);
1155 ASSERT(list_empty(&qi
->qi_dqlist
));
1156 mutex_destroy(&qi
->qi_dqlist_lock
);
1158 if (qi
->qi_uquotaip
) {
1159 IRELE(qi
->qi_uquotaip
);
1160 qi
->qi_uquotaip
= NULL
; /* paranoia */
1162 if (qi
->qi_gquotaip
) {
1163 IRELE(qi
->qi_gquotaip
);
1164 qi
->qi_gquotaip
= NULL
;
1166 mutex_destroy(&qi
->qi_quotaofflock
);
1168 mp
->m_quotainfo
= NULL
;
1173 /* ------------------- PRIVATE STATIC FUNCTIONS ----------------------- */
1182 mutex_init(&list
->qh_lock
);
1183 INIT_LIST_HEAD(&list
->qh_list
);
1184 list
->qh_version
= 0;
1185 list
->qh_nelems
= 0;
1189 xfs_qm_list_destroy(
1192 mutex_destroy(&(list
->qh_lock
));
1197 * Stripped down version of dqattach. This doesn't attach, or even look at the
1198 * dquots attached to the inode. The rationale is that there won't be any
1199 * attached at the time this is called from quotacheck.
1202 xfs_qm_dqget_noattach(
1204 xfs_dquot_t
**O_udqpp
,
1205 xfs_dquot_t
**O_gdqpp
)
1209 xfs_dquot_t
*udqp
, *gdqp
;
1211 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
1216 if (XFS_IS_UQUOTA_ON(mp
)) {
1217 ASSERT(ip
->i_udquot
== NULL
);
1219 * We want the dquot allocated if it doesn't exist.
1221 if ((error
= xfs_qm_dqget(mp
, ip
, ip
->i_d
.di_uid
, XFS_DQ_USER
,
1222 XFS_QMOPT_DQALLOC
| XFS_QMOPT_DOWARN
,
1225 * Shouldn't be able to turn off quotas here.
1227 ASSERT(error
!= ESRCH
);
1228 ASSERT(error
!= ENOENT
);
1234 if (XFS_IS_OQUOTA_ON(mp
)) {
1235 ASSERT(ip
->i_gdquot
== NULL
);
1238 error
= XFS_IS_GQUOTA_ON(mp
) ?
1239 xfs_qm_dqget(mp
, ip
,
1240 ip
->i_d
.di_gid
, XFS_DQ_GROUP
,
1241 XFS_QMOPT_DQALLOC
|XFS_QMOPT_DOWARN
,
1243 xfs_qm_dqget(mp
, ip
,
1244 ip
->i_d
.di_projid
, XFS_DQ_PROJ
,
1245 XFS_QMOPT_DQALLOC
|XFS_QMOPT_DOWARN
,
1249 xfs_qm_dqrele(udqp
);
1250 ASSERT(error
!= ESRCH
);
1251 ASSERT(error
!= ENOENT
);
1256 /* Reacquire the locks in the right order */
1258 if (! xfs_qm_dqlock_nowait(udqp
)) {
1270 if (udqp
) ASSERT(XFS_DQ_IS_LOCKED(udqp
));
1271 if (gdqp
) ASSERT(XFS_DQ_IS_LOCKED(gdqp
));
1277 * Create an inode and return with a reference already taken, but unlocked
1278 * This is how we create quota inodes
1291 tp
= xfs_trans_alloc(mp
, XFS_TRANS_QM_QINOCREATE
);
1292 if ((error
= xfs_trans_reserve(tp
,
1293 XFS_QM_QINOCREATE_SPACE_RES(mp
),
1294 XFS_CREATE_LOG_RES(mp
), 0,
1295 XFS_TRANS_PERM_LOG_RES
,
1296 XFS_CREATE_LOG_COUNT
))) {
1297 xfs_trans_cancel(tp
, 0);
1301 if ((error
= xfs_dir_ialloc(&tp
, NULL
, S_IFREG
, 1, 0,
1302 &xfs_zerocr
, 0, 1, ip
, &committed
))) {
1303 xfs_trans_cancel(tp
, XFS_TRANS_RELEASE_LOG_RES
|
1309 * Keep an extra reference to this quota inode. This inode is
1310 * locked exclusively and joined to the transaction already.
1312 ASSERT(xfs_isilocked(*ip
, XFS_ILOCK_EXCL
));
1316 * Make the changes in the superblock, and log those too.
1317 * sbfields arg may contain fields other than *QUOTINO;
1318 * VERSIONNUM for example.
1320 spin_lock(&mp
->m_sb_lock
);
1321 if (flags
& XFS_QMOPT_SBVERSION
) {
1322 ASSERT(!xfs_sb_version_hasquota(&mp
->m_sb
));
1323 ASSERT((sbfields
& (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
1324 XFS_SB_GQUOTINO
| XFS_SB_QFLAGS
)) ==
1325 (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
1326 XFS_SB_GQUOTINO
| XFS_SB_QFLAGS
));
1328 xfs_sb_version_addquota(&mp
->m_sb
);
1329 mp
->m_sb
.sb_uquotino
= NULLFSINO
;
1330 mp
->m_sb
.sb_gquotino
= NULLFSINO
;
1332 /* qflags will get updated _after_ quotacheck */
1333 mp
->m_sb
.sb_qflags
= 0;
1335 if (flags
& XFS_QMOPT_UQUOTA
)
1336 mp
->m_sb
.sb_uquotino
= (*ip
)->i_ino
;
1338 mp
->m_sb
.sb_gquotino
= (*ip
)->i_ino
;
1339 spin_unlock(&mp
->m_sb_lock
);
1340 xfs_mod_sb(tp
, sbfields
);
1342 if ((error
= xfs_trans_commit(tp
, XFS_TRANS_RELEASE_LOG_RES
))) {
1343 xfs_fs_cmn_err(CE_ALERT
, mp
, "XFS qino_alloc failed!");
1351 xfs_qm_reset_dqcounts(
1357 xfs_disk_dquot_t
*ddq
;
1360 trace_xfs_reset_dqcounts(bp
, _RET_IP_
);
1363 * Reset all counters and timers. They'll be
1364 * started afresh by xfs_qm_quotacheck.
1367 j
= XFS_FSB_TO_B(mp
, XFS_DQUOT_CLUSTER_SIZE_FSB
);
1368 do_div(j
, sizeof(xfs_dqblk_t
));
1369 ASSERT(mp
->m_quotainfo
->qi_dqperchunk
== j
);
1371 ddq
= (xfs_disk_dquot_t
*)XFS_BUF_PTR(bp
);
1372 for (j
= 0; j
< mp
->m_quotainfo
->qi_dqperchunk
; j
++) {
1374 * Do a sanity check, and if needed, repair the dqblk. Don't
1375 * output any warnings because it's perfectly possible to
1376 * find uninitialised dquot blks. See comment in xfs_qm_dqcheck.
1378 (void) xfs_qm_dqcheck(ddq
, id
+j
, type
, XFS_QMOPT_DQREPAIR
,
1382 ddq
->d_rtbcount
= 0;
1385 ddq
->d_rtbtimer
= 0;
1388 ddq
->d_rtbwarns
= 0;
1389 ddq
= (xfs_disk_dquot_t
*) ((xfs_dqblk_t
*)ddq
+ 1);
1398 xfs_filblks_t blkcnt
,
1409 incr
= (blkcnt
> XFS_QM_MAX_DQCLUSTER_LOGSZ
) ?
1410 XFS_QM_MAX_DQCLUSTER_LOGSZ
: blkcnt
;
1411 type
= flags
& XFS_QMOPT_UQUOTA
? XFS_DQ_USER
:
1412 (flags
& XFS_QMOPT_PQUOTA
? XFS_DQ_PROJ
: XFS_DQ_GROUP
);
1416 * Blkcnt arg can be a very big number, and might even be
1417 * larger than the log itself. So, we have to break it up into
1418 * manageable-sized transactions.
1419 * Note that we don't start a permanent transaction here; we might
1420 * not be able to get a log reservation for the whole thing up front,
1421 * and we don't really care to either, because we just discard
1422 * everything if we were to crash in the middle of this loop.
1425 error
= xfs_trans_read_buf(mp
, NULL
, mp
->m_ddev_targp
,
1426 XFS_FSB_TO_DADDR(mp
, bno
),
1427 mp
->m_quotainfo
->qi_dqchunklen
, 0, &bp
);
1431 xfs_qm_reset_dqcounts(mp
, bp
, firstid
, type
);
1432 xfs_bdwrite(mp
, bp
);
1434 * goto the next block.
1437 firstid
+= mp
->m_quotainfo
->qi_dqperchunk
;
1443 * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a
1444 * caller supplied function for every chunk of dquots that we find.
1452 xfs_bmbt_irec_t
*map
;
1453 int i
, nmaps
; /* number of map entries */
1454 int error
; /* return value */
1455 xfs_fileoff_t lblkno
;
1456 xfs_filblks_t maxlblkcnt
;
1458 xfs_fsblock_t rablkno
;
1459 xfs_filblks_t rablkcnt
;
1463 * This looks racy, but we can't keep an inode lock across a
1464 * trans_reserve. But, this gets called during quotacheck, and that
1465 * happens only at mount time which is single threaded.
1467 if (qip
->i_d
.di_nblocks
== 0)
1470 map
= kmem_alloc(XFS_DQITER_MAP_SIZE
* sizeof(*map
), KM_SLEEP
);
1473 maxlblkcnt
= XFS_B_TO_FSB(mp
, (xfs_ufsize_t
)XFS_MAXIOFFSET(mp
));
1475 nmaps
= XFS_DQITER_MAP_SIZE
;
1477 * We aren't changing the inode itself. Just changing
1478 * some of its data. No new blocks are added here, and
1479 * the inode is never added to the transaction.
1481 xfs_ilock(qip
, XFS_ILOCK_SHARED
);
1482 error
= xfs_bmapi(NULL
, qip
, lblkno
,
1483 maxlblkcnt
- lblkno
,
1486 0, map
, &nmaps
, NULL
);
1487 xfs_iunlock(qip
, XFS_ILOCK_SHARED
);
1491 ASSERT(nmaps
<= XFS_DQITER_MAP_SIZE
);
1492 for (i
= 0; i
< nmaps
; i
++) {
1493 ASSERT(map
[i
].br_startblock
!= DELAYSTARTBLOCK
);
1494 ASSERT(map
[i
].br_blockcount
);
1497 lblkno
+= map
[i
].br_blockcount
;
1499 if (map
[i
].br_startblock
== HOLESTARTBLOCK
)
1502 firstid
= (xfs_dqid_t
) map
[i
].br_startoff
*
1503 mp
->m_quotainfo
->qi_dqperchunk
;
1505 * Do a read-ahead on the next extent.
1507 if ((i
+1 < nmaps
) &&
1508 (map
[i
+1].br_startblock
!= HOLESTARTBLOCK
)) {
1509 rablkcnt
= map
[i
+1].br_blockcount
;
1510 rablkno
= map
[i
+1].br_startblock
;
1511 while (rablkcnt
--) {
1512 xfs_baread(mp
->m_ddev_targp
,
1513 XFS_FSB_TO_DADDR(mp
, rablkno
),
1514 mp
->m_quotainfo
->qi_dqchunklen
);
1519 * Iterate thru all the blks in the extent and
1520 * reset the counters of all the dquots inside them.
1522 if ((error
= xfs_qm_dqiter_bufs(mp
,
1524 map
[i
].br_startblock
,
1525 map
[i
].br_blockcount
,
1533 } while (nmaps
> 0);
1541 * Called by dqusage_adjust in doing a quotacheck.
1542 * Given the inode, and a dquot (either USR or GRP, doesn't matter),
1543 * this updates its incore copy as well as the buffer copy. This is
1544 * so that once the quotacheck is done, we can just log all the buffers,
1545 * as opposed to logging numerous updates to individual dquots.
1548 xfs_qm_quotacheck_dqadjust(
1553 ASSERT(XFS_DQ_IS_LOCKED(dqp
));
1555 trace_xfs_dqadjust(dqp
);
1558 * Adjust the inode count and the block count to reflect this inode's
1561 be64_add_cpu(&dqp
->q_core
.d_icount
, 1);
1562 dqp
->q_res_icount
++;
1564 be64_add_cpu(&dqp
->q_core
.d_bcount
, nblks
);
1565 dqp
->q_res_bcount
+= nblks
;
1568 be64_add_cpu(&dqp
->q_core
.d_rtbcount
, rtblks
);
1569 dqp
->q_res_rtbcount
+= rtblks
;
1573 * Set default limits, adjust timers (since we changed usages)
1575 * There are no timers for the default values set in the root dquot.
1577 if (dqp
->q_core
.d_id
) {
1578 xfs_qm_adjust_dqlimits(dqp
->q_mount
, &dqp
->q_core
);
1579 xfs_qm_adjust_dqtimers(dqp
->q_mount
, &dqp
->q_core
);
1582 dqp
->dq_flags
|= XFS_DQ_DIRTY
;
1588 xfs_qcnt_t
*O_rtblks
)
1590 xfs_filblks_t rtblks
; /* total rt blks */
1591 xfs_extnum_t idx
; /* extent record index */
1592 xfs_ifork_t
*ifp
; /* inode fork pointer */
1593 xfs_extnum_t nextents
; /* number of extent entries */
1596 ASSERT(XFS_IS_REALTIME_INODE(ip
));
1597 ifp
= XFS_IFORK_PTR(ip
, XFS_DATA_FORK
);
1598 if (!(ifp
->if_flags
& XFS_IFEXTENTS
)) {
1599 if ((error
= xfs_iread_extents(NULL
, ip
, XFS_DATA_FORK
)))
1603 nextents
= ifp
->if_bytes
/ (uint
)sizeof(xfs_bmbt_rec_t
);
1604 for (idx
= 0; idx
< nextents
; idx
++)
1605 rtblks
+= xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp
, idx
));
1606 *O_rtblks
= (xfs_qcnt_t
)rtblks
;
1611 * callback routine supplied to bulkstat(). Given an inumber, find its
1612 * dquots and update them to account for resources taken by that inode.
1616 xfs_qm_dqusage_adjust(
1617 xfs_mount_t
*mp
, /* mount point for filesystem */
1618 xfs_ino_t ino
, /* inode number to get data for */
1619 void __user
*buffer
, /* not used */
1620 int ubsize
, /* not used */
1621 int *ubused
, /* not used */
1622 int *res
) /* result code value */
1625 xfs_dquot_t
*udqp
, *gdqp
;
1626 xfs_qcnt_t nblks
, rtblks
;
1629 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1632 * rootino must have its resources accounted for, not so with the quota
1635 if (ino
== mp
->m_sb
.sb_uquotino
|| ino
== mp
->m_sb
.sb_gquotino
) {
1636 *res
= BULKSTAT_RV_NOTHING
;
1637 return XFS_ERROR(EINVAL
);
1641 * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget
1642 * interface expects the inode to be exclusively locked because that's
1643 * the case in all other instances. It's OK that we do this because
1644 * quotacheck is done only at mount time.
1646 if ((error
= xfs_iget(mp
, NULL
, ino
, 0, XFS_ILOCK_EXCL
, &ip
))) {
1647 *res
= BULKSTAT_RV_NOTHING
;
1652 * Obtain the locked dquots. In case of an error (eg. allocation
1653 * fails for ENOSPC), we return the negative of the error number
1654 * to bulkstat, so that it can get propagated to quotacheck() and
1655 * making us disable quotas for the file system.
1657 if ((error
= xfs_qm_dqget_noattach(ip
, &udqp
, &gdqp
))) {
1658 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1660 *res
= BULKSTAT_RV_GIVEUP
;
1665 if (! XFS_IS_REALTIME_INODE(ip
)) {
1666 nblks
= (xfs_qcnt_t
)ip
->i_d
.di_nblocks
;
1669 * Walk thru the extent list and count the realtime blocks.
1671 if ((error
= xfs_qm_get_rtblks(ip
, &rtblks
))) {
1672 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1678 *res
= BULKSTAT_RV_GIVEUP
;
1681 nblks
= (xfs_qcnt_t
)ip
->i_d
.di_nblocks
- rtblks
;
1683 ASSERT(ip
->i_delayed_blks
== 0);
1686 * We can't release the inode while holding its dquot locks.
1687 * The inode can go into inactive and might try to acquire the dquotlocks.
1688 * So, just unlock here and do a vn_rele at the end.
1690 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1693 * Add the (disk blocks and inode) resources occupied by this
1694 * inode to its dquots. We do this adjustment in the incore dquot,
1695 * and also copy the changes to its buffer.
1696 * We don't care about putting these changes in a transaction
1697 * envelope because if we crash in the middle of a 'quotacheck'
1698 * we have to start from the beginning anyway.
1699 * Once we're done, we'll log all the dquot bufs.
1701 * The *QUOTA_ON checks below may look pretty racy, but quotachecks
1702 * and quotaoffs don't race. (Quotachecks happen at mount time only).
1704 if (XFS_IS_UQUOTA_ON(mp
)) {
1706 xfs_qm_quotacheck_dqadjust(udqp
, nblks
, rtblks
);
1709 if (XFS_IS_OQUOTA_ON(mp
)) {
1711 xfs_qm_quotacheck_dqadjust(gdqp
, nblks
, rtblks
);
1715 * Now release the inode. This will send it to 'inactive', and
1716 * possibly even free blocks.
1723 *res
= BULKSTAT_RV_DIDONE
;
1728 * Walk thru all the filesystem inodes and construct a consistent view
1729 * of the disk quota world. If the quotacheck fails, disable quotas.
1735 int done
, count
, error
;
1738 xfs_inode_t
*uip
, *gip
;
1746 ASSERT(mp
->m_quotainfo
->qi_uquotaip
|| mp
->m_quotainfo
->qi_gquotaip
);
1747 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1750 * There should be no cached dquots. The (simplistic) quotacheck
1751 * algorithm doesn't like that.
1753 ASSERT(list_empty(&mp
->m_quotainfo
->qi_dqlist
));
1755 cmn_err(CE_NOTE
, "XFS quotacheck %s: Please wait.", mp
->m_fsname
);
1758 * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset
1759 * their counters to zero. We need a clean slate.
1760 * We don't log our changes till later.
1762 uip
= mp
->m_quotainfo
->qi_uquotaip
;
1764 error
= xfs_qm_dqiterate(mp
, uip
, XFS_QMOPT_UQUOTA
);
1767 flags
|= XFS_UQUOTA_CHKD
;
1770 gip
= mp
->m_quotainfo
->qi_gquotaip
;
1772 error
= xfs_qm_dqiterate(mp
, gip
, XFS_IS_GQUOTA_ON(mp
) ?
1773 XFS_QMOPT_GQUOTA
: XFS_QMOPT_PQUOTA
);
1776 flags
|= XFS_OQUOTA_CHKD
;
1781 * Iterate thru all the inodes in the file system,
1782 * adjusting the corresponding dquot counters in core.
1784 error
= xfs_bulkstat(mp
, &lastino
, &count
,
1785 xfs_qm_dqusage_adjust
,
1786 structsz
, NULL
, &done
);
1793 * We've made all the changes that we need to make incore.
1794 * Flush them down to disk buffers if everything was updated
1798 error
= xfs_qm_dqflush_all(mp
, 0);
1801 * We can get this error if we couldn't do a dquot allocation inside
1802 * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the
1803 * dirty dquots that might be cached, we just want to get rid of them
1804 * and turn quotaoff. The dquots won't be attached to any of the inodes
1805 * at this point (because we intentionally didn't in dqget_noattach).
1808 xfs_qm_dqpurge_all(mp
, XFS_QMOPT_QUOTALL
);
1813 * We didn't log anything, because if we crashed, we'll have to
1814 * start the quotacheck from scratch anyway. However, we must make
1815 * sure that our dquot changes are secure before we put the
1816 * quotacheck'd stamp on the superblock. So, here we do a synchronous
1819 XFS_bflush(mp
->m_ddev_targp
);
1822 * If one type of quotas is off, then it will lose its
1823 * quotachecked status, since we won't be doing accounting for
1824 * that type anymore.
1826 mp
->m_qflags
&= ~(XFS_OQUOTA_CHKD
| XFS_UQUOTA_CHKD
);
1827 mp
->m_qflags
|= flags
;
1829 xfs_qm_dquot_list_print(mp
);
1833 cmn_err(CE_WARN
, "XFS quotacheck %s: Unsuccessful (Error %d): "
1834 "Disabling quotas.",
1835 mp
->m_fsname
, error
);
1837 * We must turn off quotas.
1839 ASSERT(mp
->m_quotainfo
!= NULL
);
1840 ASSERT(xfs_Gqm
!= NULL
);
1841 xfs_qm_destroy_quotainfo(mp
);
1842 if (xfs_mount_reset_sbqflags(mp
)) {
1843 cmn_err(CE_WARN
, "XFS quotacheck %s: "
1844 "Failed to reset quota flags.", mp
->m_fsname
);
1847 cmn_err(CE_NOTE
, "XFS quotacheck %s: Done.", mp
->m_fsname
);
1853 * This is called after the superblock has been read in and we're ready to
1854 * iget the quota inodes.
1857 xfs_qm_init_quotainos(
1860 xfs_inode_t
*uip
, *gip
;
1865 ASSERT(mp
->m_quotainfo
);
1871 * Get the uquota and gquota inodes
1873 if (xfs_sb_version_hasquota(&mp
->m_sb
)) {
1874 if (XFS_IS_UQUOTA_ON(mp
) &&
1875 mp
->m_sb
.sb_uquotino
!= NULLFSINO
) {
1876 ASSERT(mp
->m_sb
.sb_uquotino
> 0);
1877 if ((error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_uquotino
,
1879 return XFS_ERROR(error
);
1881 if (XFS_IS_OQUOTA_ON(mp
) &&
1882 mp
->m_sb
.sb_gquotino
!= NULLFSINO
) {
1883 ASSERT(mp
->m_sb
.sb_gquotino
> 0);
1884 if ((error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_gquotino
,
1888 return XFS_ERROR(error
);
1892 flags
|= XFS_QMOPT_SBVERSION
;
1893 sbflags
|= (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
1894 XFS_SB_GQUOTINO
| XFS_SB_QFLAGS
);
1898 * Create the two inodes, if they don't exist already. The changes
1899 * made above will get added to a transaction and logged in one of
1900 * the qino_alloc calls below. If the device is readonly,
1901 * temporarily switch to read-write to do this.
1903 if (XFS_IS_UQUOTA_ON(mp
) && uip
== NULL
) {
1904 if ((error
= xfs_qm_qino_alloc(mp
, &uip
,
1905 sbflags
| XFS_SB_UQUOTINO
,
1906 flags
| XFS_QMOPT_UQUOTA
)))
1907 return XFS_ERROR(error
);
1909 flags
&= ~XFS_QMOPT_SBVERSION
;
1911 if (XFS_IS_OQUOTA_ON(mp
) && gip
== NULL
) {
1912 flags
|= (XFS_IS_GQUOTA_ON(mp
) ?
1913 XFS_QMOPT_GQUOTA
: XFS_QMOPT_PQUOTA
);
1914 error
= xfs_qm_qino_alloc(mp
, &gip
,
1915 sbflags
| XFS_SB_GQUOTINO
, flags
);
1920 return XFS_ERROR(error
);
1924 mp
->m_quotainfo
->qi_uquotaip
= uip
;
1925 mp
->m_quotainfo
->qi_gquotaip
= gip
;
1933 * Just pop the least recently used dquot off the freelist and
1934 * recycle it. The returned dquot is locked.
1936 STATIC xfs_dquot_t
*
1937 xfs_qm_dqreclaim_one(void)
1939 xfs_dquot_t
*dqpout
;
1946 /* lockorder: hashchainlock, freelistlock, mplistlock, dqlock, dqflock */
1948 mutex_lock(&xfs_Gqm
->qm_dqfrlist_lock
);
1950 list_for_each_entry(dqp
, &xfs_Gqm
->qm_dqfrlist
, q_freelist
) {
1951 struct xfs_mount
*mp
= dqp
->q_mount
;
1955 * We are racing with dqlookup here. Naturally we don't
1956 * want to reclaim a dquot that lookup wants. We release the
1957 * freelist lock and start over, so that lookup will grab
1958 * both the dquot and the freelistlock.
1960 if (dqp
->dq_flags
& XFS_DQ_WANT
) {
1961 ASSERT(! (dqp
->dq_flags
& XFS_DQ_INACTIVE
));
1963 trace_xfs_dqreclaim_want(dqp
);
1966 mutex_unlock(&xfs_Gqm
->qm_dqfrlist_lock
);
1967 if (++restarts
>= XFS_QM_RECLAIM_MAX_RESTARTS
)
1969 XQM_STATS_INC(xqmstats
.xs_qm_dqwants
);
1974 * If the dquot is inactive, we are assured that it is
1975 * not on the mplist or the hashlist, and that makes our
1978 if (dqp
->dq_flags
& XFS_DQ_INACTIVE
) {
1980 ASSERT(! XFS_DQ_IS_DIRTY(dqp
));
1981 ASSERT(list_empty(&dqp
->q_hashlist
));
1982 ASSERT(list_empty(&dqp
->q_mplist
));
1983 list_del_init(&dqp
->q_freelist
);
1984 xfs_Gqm
->qm_dqfrlist_cnt
--;
1987 XQM_STATS_INC(xqmstats
.xs_qm_dqinact_reclaims
);
1991 ASSERT(dqp
->q_hash
);
1992 ASSERT(!list_empty(&dqp
->q_mplist
));
1995 * Try to grab the flush lock. If this dquot is in the process of
1996 * getting flushed to disk, we don't want to reclaim it.
1998 if (!xfs_dqflock_nowait(dqp
)) {
2004 * We have the flush lock so we know that this is not in the
2005 * process of being flushed. So, if this is dirty, flush it
2006 * DELWRI so that we don't get a freelist infested with
2009 if (XFS_DQ_IS_DIRTY(dqp
)) {
2012 trace_xfs_dqreclaim_dirty(dqp
);
2015 * We flush it delayed write, so don't bother
2016 * releasing the freelist lock.
2018 error
= xfs_qm_dqflush(dqp
, 0);
2020 xfs_fs_cmn_err(CE_WARN
, mp
,
2021 "xfs_qm_dqreclaim: dquot %p flush failed", dqp
);
2023 xfs_dqunlock(dqp
); /* dqflush unlocks dqflock */
2028 * We're trying to get the hashlock out of order. This races
2029 * with dqlookup; so, we giveup and goto the next dquot if
2030 * we couldn't get the hashlock. This way, we won't starve
2031 * a dqlookup process that holds the hashlock that is
2032 * waiting for the freelist lock.
2034 if (!mutex_trylock(&dqp
->q_hash
->qh_lock
)) {
2040 * This races with dquot allocation code as well as dqflush_all
2041 * and reclaim code. So, if we failed to grab the mplist lock,
2042 * giveup everything and start over.
2044 if (!mutex_trylock(&mp
->m_quotainfo
->qi_dqlist_lock
)) {
2046 mutex_unlock(&dqp
->q_hash
->qh_lock
);
2049 mutex_unlock(&xfs_Gqm
->qm_dqfrlist_lock
);
2050 if (restarts
++ >= XFS_QM_RECLAIM_MAX_RESTARTS
)
2055 ASSERT(dqp
->q_nrefs
== 0);
2056 list_del_init(&dqp
->q_mplist
);
2057 mp
->m_quotainfo
->qi_dquots
--;
2058 mp
->m_quotainfo
->qi_dqreclaims
++;
2059 list_del_init(&dqp
->q_hashlist
);
2060 dqp
->q_hash
->qh_version
++;
2061 list_del_init(&dqp
->q_freelist
);
2062 xfs_Gqm
->qm_dqfrlist_cnt
--;
2064 mutex_unlock(&mp
->m_quotainfo
->qi_dqlist_lock
);
2065 mutex_unlock(&dqp
->q_hash
->qh_lock
);
2071 if (restarts
>= XFS_QM_RECLAIM_MAX_RESTARTS
)
2074 mutex_unlock(&xfs_Gqm
->qm_dqfrlist_lock
);
2079 * Traverse the freelist of dquots and attempt to reclaim a maximum of
2080 * 'howmany' dquots. This operation races with dqlookup(), and attempts to
2081 * favor the lookup function ...
2084 xfs_qm_shake_freelist(
2093 while (nreclaimed
< howmany
) {
2094 dqp
= xfs_qm_dqreclaim_one();
2097 xfs_qm_dqdestroy(dqp
);
2104 * The kmem_shake interface is invoked when memory is running low.
2109 struct shrinker
*shrink
,
2113 int ndqused
, nfree
, n
;
2115 if (!kmem_shake_allow(gfp_mask
))
2120 nfree
= xfs_Gqm
->qm_dqfrlist_cnt
; /* free dquots */
2121 /* incore dquots in all f/s's */
2122 ndqused
= atomic_read(&xfs_Gqm
->qm_totaldquots
) - nfree
;
2124 ASSERT(ndqused
>= 0);
2126 if (nfree
<= ndqused
&& nfree
< ndquot
)
2129 ndqused
*= xfs_Gqm
->qm_dqfree_ratio
; /* target # of free dquots */
2130 n
= nfree
- ndqused
- ndquot
; /* # over target */
2132 return xfs_qm_shake_freelist(MAX(nfree
, n
));
2136 /*------------------------------------------------------------------*/
2139 * Return a new incore dquot. Depending on the number of
2140 * dquots in the system, we either allocate a new one on the kernel heap,
2141 * or reclaim a free one.
2142 * Return value is B_TRUE if we allocated a new dquot, B_FALSE if we managed
2143 * to reclaim an existing one from the freelist.
2146 xfs_qm_dqalloc_incore(
2147 xfs_dquot_t
**O_dqpp
)
2152 * Check against high water mark to see if we want to pop
2153 * a nincompoop dquot off the freelist.
2155 if (atomic_read(&xfs_Gqm
->qm_totaldquots
) >= ndquot
) {
2157 * Try to recycle a dquot from the freelist.
2159 if ((dqp
= xfs_qm_dqreclaim_one())) {
2160 XQM_STATS_INC(xqmstats
.xs_qm_dqreclaims
);
2161 memset(&dqp
->q_core
, 0, sizeof(dqp
->q_core
));
2165 XQM_STATS_INC(xqmstats
.xs_qm_dqreclaim_misses
);
2169 * Allocate a brand new dquot on the kernel heap and return it
2170 * to the caller to initialize.
2172 ASSERT(xfs_Gqm
->qm_dqzone
!= NULL
);
2173 *O_dqpp
= kmem_zone_zalloc(xfs_Gqm
->qm_dqzone
, KM_SLEEP
);
2174 atomic_inc(&xfs_Gqm
->qm_totaldquots
);
2181 * Start a transaction and write the incore superblock changes to
2182 * disk. flags parameter indicates which fields have changed.
2185 xfs_qm_write_sb_changes(
2193 cmn_err(CE_NOTE
, "Writing superblock quota changes :%s", mp
->m_fsname
);
2195 tp
= xfs_trans_alloc(mp
, XFS_TRANS_QM_SBCHANGE
);
2196 if ((error
= xfs_trans_reserve(tp
, 0,
2197 mp
->m_sb
.sb_sectsize
+ 128, 0,
2199 XFS_DEFAULT_LOG_COUNT
))) {
2200 xfs_trans_cancel(tp
, 0);
2204 xfs_mod_sb(tp
, flags
);
2205 error
= xfs_trans_commit(tp
, 0);
2211 /* --------------- utility functions for vnodeops ---------------- */
2215 * Given an inode, a uid and gid (from cred_t) make sure that we have
2216 * allocated relevant dquot(s) on disk, and that we won't exceed inode
2217 * quotas by creating this file.
2218 * This also attaches dquot(s) to the given inode after locking it,
2219 * and returns the dquots corresponding to the uid and/or gid.
2221 * in : inode (unlocked)
2222 * out : udquot, gdquot with references taken and unlocked
2226 struct xfs_inode
*ip
,
2231 struct xfs_dquot
**O_udqpp
,
2232 struct xfs_dquot
**O_gdqpp
)
2234 struct xfs_mount
*mp
= ip
->i_mount
;
2235 struct xfs_dquot
*uq
, *gq
;
2239 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
2242 lockflags
= XFS_ILOCK_EXCL
;
2243 xfs_ilock(ip
, lockflags
);
2245 if ((flags
& XFS_QMOPT_INHERIT
) && XFS_INHERIT_GID(ip
))
2246 gid
= ip
->i_d
.di_gid
;
2249 * Attach the dquot(s) to this inode, doing a dquot allocation
2250 * if necessary. The dquot(s) will not be locked.
2252 if (XFS_NOT_DQATTACHED(mp
, ip
)) {
2253 error
= xfs_qm_dqattach_locked(ip
, XFS_QMOPT_DQALLOC
);
2255 xfs_iunlock(ip
, lockflags
);
2261 if ((flags
& XFS_QMOPT_UQUOTA
) && XFS_IS_UQUOTA_ON(mp
)) {
2262 if (ip
->i_d
.di_uid
!= uid
) {
2264 * What we need is the dquot that has this uid, and
2265 * if we send the inode to dqget, the uid of the inode
2266 * takes priority over what's sent in the uid argument.
2267 * We must unlock inode here before calling dqget if
2268 * we're not sending the inode, because otherwise
2269 * we'll deadlock by doing trans_reserve while
2272 xfs_iunlock(ip
, lockflags
);
2273 if ((error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
) uid
,
2278 ASSERT(error
!= ENOENT
);
2282 * Get the ilock in the right order.
2285 lockflags
= XFS_ILOCK_SHARED
;
2286 xfs_ilock(ip
, lockflags
);
2289 * Take an extra reference, because we'll return
2292 ASSERT(ip
->i_udquot
);
2299 if ((flags
& XFS_QMOPT_GQUOTA
) && XFS_IS_GQUOTA_ON(mp
)) {
2300 if (ip
->i_d
.di_gid
!= gid
) {
2301 xfs_iunlock(ip
, lockflags
);
2302 if ((error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
)gid
,
2309 ASSERT(error
!= ENOENT
);
2313 lockflags
= XFS_ILOCK_SHARED
;
2314 xfs_ilock(ip
, lockflags
);
2316 ASSERT(ip
->i_gdquot
);
2322 } else if ((flags
& XFS_QMOPT_PQUOTA
) && XFS_IS_PQUOTA_ON(mp
)) {
2323 if (ip
->i_d
.di_projid
!= prid
) {
2324 xfs_iunlock(ip
, lockflags
);
2325 if ((error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
)prid
,
2332 ASSERT(error
!= ENOENT
);
2336 lockflags
= XFS_ILOCK_SHARED
;
2337 xfs_ilock(ip
, lockflags
);
2339 ASSERT(ip
->i_gdquot
);
2347 trace_xfs_dquot_dqalloc(ip
);
2349 xfs_iunlock(ip
, lockflags
);
2362 * Actually transfer ownership, and do dquot modifications.
2363 * These were already reserved.
2369 xfs_dquot_t
**IO_olddq
,
2372 xfs_dquot_t
*prevdq
;
2373 uint bfield
= XFS_IS_REALTIME_INODE(ip
) ?
2374 XFS_TRANS_DQ_RTBCOUNT
: XFS_TRANS_DQ_BCOUNT
;
2377 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
2378 ASSERT(XFS_IS_QUOTA_RUNNING(ip
->i_mount
));
2383 ASSERT(prevdq
!= newdq
);
2385 xfs_trans_mod_dquot(tp
, prevdq
, bfield
, -(ip
->i_d
.di_nblocks
));
2386 xfs_trans_mod_dquot(tp
, prevdq
, XFS_TRANS_DQ_ICOUNT
, -1);
2388 /* the sparkling new dquot */
2389 xfs_trans_mod_dquot(tp
, newdq
, bfield
, ip
->i_d
.di_nblocks
);
2390 xfs_trans_mod_dquot(tp
, newdq
, XFS_TRANS_DQ_ICOUNT
, 1);
2393 * Take an extra reference, because the inode
2394 * is going to keep this dquot pointer even
2395 * after the trans_commit.
2399 xfs_dqunlock(newdq
);
2406 * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID).
2409 xfs_qm_vop_chown_reserve(
2416 xfs_mount_t
*mp
= ip
->i_mount
;
2417 uint delblks
, blkflags
, prjflags
= 0;
2418 xfs_dquot_t
*unresudq
, *unresgdq
, *delblksudq
, *delblksgdq
;
2422 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
|XFS_ILOCK_SHARED
));
2423 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
2425 delblks
= ip
->i_delayed_blks
;
2426 delblksudq
= delblksgdq
= unresudq
= unresgdq
= NULL
;
2427 blkflags
= XFS_IS_REALTIME_INODE(ip
) ?
2428 XFS_QMOPT_RES_RTBLKS
: XFS_QMOPT_RES_REGBLKS
;
2430 if (XFS_IS_UQUOTA_ON(mp
) && udqp
&&
2431 ip
->i_d
.di_uid
!= (uid_t
)be32_to_cpu(udqp
->q_core
.d_id
)) {
2434 * If there are delayed allocation blocks, then we have to
2435 * unreserve those from the old dquot, and add them to the
2439 ASSERT(ip
->i_udquot
);
2440 unresudq
= ip
->i_udquot
;
2443 if (XFS_IS_OQUOTA_ON(ip
->i_mount
) && gdqp
) {
2444 if (XFS_IS_PQUOTA_ON(ip
->i_mount
) &&
2445 ip
->i_d
.di_projid
!= be32_to_cpu(gdqp
->q_core
.d_id
))
2446 prjflags
= XFS_QMOPT_ENOSPC
;
2449 (XFS_IS_GQUOTA_ON(ip
->i_mount
) &&
2450 ip
->i_d
.di_gid
!= be32_to_cpu(gdqp
->q_core
.d_id
))) {
2453 ASSERT(ip
->i_gdquot
);
2454 unresgdq
= ip
->i_gdquot
;
2459 if ((error
= xfs_trans_reserve_quota_bydquots(tp
, ip
->i_mount
,
2460 delblksudq
, delblksgdq
, ip
->i_d
.di_nblocks
, 1,
2461 flags
| blkflags
| prjflags
)))
2465 * Do the delayed blks reservations/unreservations now. Since, these
2466 * are done without the help of a transaction, if a reservation fails
2467 * its previous reservations won't be automatically undone by trans
2468 * code. So, we have to do it manually here.
2472 * Do the reservations first. Unreservation can't fail.
2474 ASSERT(delblksudq
|| delblksgdq
);
2475 ASSERT(unresudq
|| unresgdq
);
2476 if ((error
= xfs_trans_reserve_quota_bydquots(NULL
, ip
->i_mount
,
2477 delblksudq
, delblksgdq
, (xfs_qcnt_t
)delblks
, 0,
2478 flags
| blkflags
| prjflags
)))
2480 xfs_trans_reserve_quota_bydquots(NULL
, ip
->i_mount
,
2481 unresudq
, unresgdq
, -((xfs_qcnt_t
)delblks
), 0,
2489 xfs_qm_vop_rename_dqattach(
2490 struct xfs_inode
**i_tab
)
2492 struct xfs_mount
*mp
= i_tab
[0]->i_mount
;
2495 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
2498 for (i
= 0; (i
< 4 && i_tab
[i
]); i
++) {
2499 struct xfs_inode
*ip
= i_tab
[i
];
2503 * Watch out for duplicate entries in the table.
2505 if (i
== 0 || ip
!= i_tab
[i
-1]) {
2506 if (XFS_NOT_DQATTACHED(mp
, ip
)) {
2507 error
= xfs_qm_dqattach(ip
, 0);
2517 xfs_qm_vop_create_dqattach(
2518 struct xfs_trans
*tp
,
2519 struct xfs_inode
*ip
,
2520 struct xfs_dquot
*udqp
,
2521 struct xfs_dquot
*gdqp
)
2523 struct xfs_mount
*mp
= tp
->t_mountp
;
2525 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
2528 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
2529 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
2535 ASSERT(ip
->i_udquot
== NULL
);
2536 ip
->i_udquot
= udqp
;
2537 ASSERT(XFS_IS_UQUOTA_ON(mp
));
2538 ASSERT(ip
->i_d
.di_uid
== be32_to_cpu(udqp
->q_core
.d_id
));
2539 xfs_trans_mod_dquot(tp
, udqp
, XFS_TRANS_DQ_ICOUNT
, 1);
2545 ASSERT(ip
->i_gdquot
== NULL
);
2546 ip
->i_gdquot
= gdqp
;
2547 ASSERT(XFS_IS_OQUOTA_ON(mp
));
2548 ASSERT((XFS_IS_GQUOTA_ON(mp
) ?
2549 ip
->i_d
.di_gid
: ip
->i_d
.di_projid
) ==
2550 be32_to_cpu(gdqp
->q_core
.d_id
));
2551 xfs_trans_mod_dquot(tp
, gdqp
, XFS_TRANS_DQ_ICOUNT
, 1);