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
;
390 * We actually don't have to acquire the m_sb_lock at all.
391 * This can only be called from mount, and that's single threaded. XXX
393 spin_lock(&mp
->m_sb_lock
);
394 sbf
= mp
->m_sb
.sb_qflags
;
395 mp
->m_sb
.sb_qflags
= mp
->m_qflags
& XFS_MOUNT_QUOTA_ALL
;
396 spin_unlock(&mp
->m_sb_lock
);
398 if (sbf
!= (mp
->m_qflags
& XFS_MOUNT_QUOTA_ALL
)) {
399 if (xfs_qm_write_sb_changes(mp
, XFS_SB_QFLAGS
)) {
401 * We could only have been turning quotas off.
402 * We aren't in very good shape actually because
403 * the incore structures are convinced that quotas are
404 * off, but the on disk superblock doesn't know that !
406 ASSERT(!(XFS_IS_QUOTA_RUNNING(mp
)));
407 xfs_fs_cmn_err(CE_ALERT
, mp
,
408 "XFS mount_quotas: Superblock update failed!");
413 xfs_fs_cmn_err(CE_WARN
, mp
,
414 "Failed to initialize disk quotas.");
419 if (XFS_IS_QUOTA_ON(mp
))
420 xfs_qm_internalqcheck(mp
);
425 * Called from the vfsops layer.
428 xfs_qm_unmount_quotas(
432 * Release the dquots that root inode, et al might be holding,
433 * before we flush quotas and blow away the quotainfo structure.
435 ASSERT(mp
->m_rootip
);
436 xfs_qm_dqdetach(mp
->m_rootip
);
438 xfs_qm_dqdetach(mp
->m_rbmip
);
440 xfs_qm_dqdetach(mp
->m_rsumip
);
443 * Release the quota inodes.
445 if (mp
->m_quotainfo
) {
446 if (mp
->m_quotainfo
->qi_uquotaip
) {
447 IRELE(mp
->m_quotainfo
->qi_uquotaip
);
448 mp
->m_quotainfo
->qi_uquotaip
= NULL
;
450 if (mp
->m_quotainfo
->qi_gquotaip
) {
451 IRELE(mp
->m_quotainfo
->qi_gquotaip
);
452 mp
->m_quotainfo
->qi_gquotaip
= NULL
;
458 * Flush all dquots of the given file system to disk. The dquots are
459 * _not_ purged from memory here, just their data written to disk.
463 struct xfs_mount
*mp
,
466 struct xfs_quotainfo
*q
= mp
->m_quotainfo
;
468 struct xfs_dquot
*dqp
;
476 mutex_lock(&q
->qi_dqlist_lock
);
477 list_for_each_entry(dqp
, &q
->qi_dqlist
, q_mplist
) {
479 if (! XFS_DQ_IS_DIRTY(dqp
)) {
484 /* XXX a sentinel would be better */
485 recl
= q
->qi_dqreclaims
;
486 if (!xfs_dqflock_nowait(dqp
)) {
488 * If we can't grab the flush lock then check
489 * to see if the dquot has been flushed delayed
490 * write. If so, grab its buffer and send it
491 * out immediately. We'll be able to acquire
492 * the flush lock when the I/O completes.
494 xfs_qm_dqflock_pushbuf_wait(dqp
);
497 * Let go of the mplist lock. We don't want to hold it
498 * across a disk write.
500 mutex_unlock(&q
->qi_dqlist_lock
);
501 error
= xfs_qm_dqflush(dqp
, sync_mode
);
506 mutex_lock(&q
->qi_dqlist_lock
);
507 if (recl
!= q
->qi_dqreclaims
) {
508 mutex_unlock(&q
->qi_dqlist_lock
);
509 /* XXX restart limit */
514 mutex_unlock(&q
->qi_dqlist_lock
);
519 * Release the group dquot pointers the user dquots may be
520 * carrying around as a hint. mplist is locked on entry and exit.
523 xfs_qm_detach_gdquots(
524 struct xfs_mount
*mp
)
526 struct xfs_quotainfo
*q
= mp
->m_quotainfo
;
527 struct xfs_dquot
*dqp
, *gdqp
;
531 ASSERT(mutex_is_locked(&q
->qi_dqlist_lock
));
532 list_for_each_entry(dqp
, &q
->qi_dqlist
, q_mplist
) {
534 if ((gdqp
= dqp
->q_gdquot
)) {
536 dqp
->q_gdquot
= NULL
;
542 * Can't hold the mplist lock across a dqput.
543 * XXXmust convert to marker based iterations here.
545 nrecl
= q
->qi_dqreclaims
;
546 mutex_unlock(&q
->qi_dqlist_lock
);
549 mutex_lock(&q
->qi_dqlist_lock
);
550 if (nrecl
!= q
->qi_dqreclaims
)
557 * Go through all the incore dquots of this file system and take them
558 * off the mplist and hashlist, if the dquot type matches the dqtype
559 * parameter. This is used when turning off quota accounting for
560 * users and/or groups, as well as when the filesystem is unmounting.
564 struct xfs_mount
*mp
,
567 struct xfs_quotainfo
*q
= mp
->m_quotainfo
;
568 struct xfs_dquot
*dqp
, *n
;
576 dqtype
= (flags
& XFS_QMOPT_UQUOTA
) ? XFS_DQ_USER
: 0;
577 dqtype
|= (flags
& XFS_QMOPT_PQUOTA
) ? XFS_DQ_PROJ
: 0;
578 dqtype
|= (flags
& XFS_QMOPT_GQUOTA
) ? XFS_DQ_GROUP
: 0;
580 mutex_lock(&q
->qi_dqlist_lock
);
583 * In the first pass through all incore dquots of this filesystem,
584 * we release the group dquot pointers the user dquots may be
585 * carrying around as a hint. We need to do this irrespective of
586 * what's being turned off.
588 xfs_qm_detach_gdquots(mp
);
592 ASSERT(mutex_is_locked(&q
->qi_dqlist_lock
));
594 * Try to get rid of all of the unwanted dquots. The idea is to
595 * get them off mplist and hashlist, but leave them on freelist.
597 list_for_each_entry_safe(dqp
, n
, &q
->qi_dqlist
, q_mplist
) {
599 * It's OK to look at the type without taking dqlock here.
600 * We're holding the mplist lock here, and that's needed for
603 if ((dqp
->dq_flags
& dqtype
) == 0)
606 if (!mutex_trylock(&dqp
->q_hash
->qh_lock
)) {
607 nrecl
= q
->qi_dqreclaims
;
608 mutex_unlock(&q
->qi_dqlist_lock
);
609 mutex_lock(&dqp
->q_hash
->qh_lock
);
610 mutex_lock(&q
->qi_dqlist_lock
);
613 * XXXTheoretically, we can get into a very long
614 * ping pong game here.
615 * No one can be adding dquots to the mplist at
616 * this point, but somebody might be taking things off.
618 if (nrecl
!= q
->qi_dqreclaims
) {
619 mutex_unlock(&dqp
->q_hash
->qh_lock
);
625 * Take the dquot off the mplist and hashlist. It may remain on
626 * freelist in INACTIVE state.
628 nmisses
+= xfs_qm_dqpurge(dqp
);
630 mutex_unlock(&q
->qi_dqlist_lock
);
642 * Purge the dquot cache.
643 * None of the dquots should really be busy at this point.
645 if (mp
->m_quotainfo
) {
646 while ((ndquots
= xfs_qm_dqpurge_int(mp
, flags
))) {
659 xfs_dquot_t
*udqhint
, /* hint */
660 xfs_dquot_t
**IO_idqpp
)
665 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
669 * See if we already have it in the inode itself. IO_idqpp is
670 * &i_udquot or &i_gdquot. This made the code look weird, but
671 * made the logic a lot simpler.
675 trace_xfs_dqattach_found(dqp
);
680 * udqhint is the i_udquot field in inode, and is non-NULL only
681 * when the type arg is group/project. Its purpose is to save a
682 * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside
686 ASSERT(type
== XFS_DQ_GROUP
|| type
== XFS_DQ_PROJ
);
690 * No need to take dqlock to look at the id.
692 * The ID can't change until it gets reclaimed, and it won't
693 * be reclaimed as long as we have a ref from inode and we
696 dqp
= udqhint
->q_gdquot
;
697 if (dqp
&& be32_to_cpu(dqp
->q_core
.d_id
) == id
) {
700 ASSERT(*IO_idqpp
== NULL
);
704 xfs_dqunlock(udqhint
);
709 * We can't hold a dquot lock when we call the dqget code.
710 * We'll deadlock in no time, because of (not conforming to)
711 * lock ordering - the inodelock comes before any dquot lock,
712 * and we may drop and reacquire the ilock in xfs_qm_dqget().
714 xfs_dqunlock(udqhint
);
718 * Find the dquot from somewhere. This bumps the
719 * reference count of dquot and returns it locked.
720 * This can return ENOENT if dquot didn't exist on
721 * disk and we didn't ask it to allocate;
722 * ESRCH if quotas got turned off suddenly.
724 error
= xfs_qm_dqget(ip
->i_mount
, ip
, id
, type
, XFS_QMOPT_DOWARN
, &dqp
);
728 trace_xfs_dqattach_get(dqp
);
731 * dqget may have dropped and re-acquired the ilock, but it guarantees
732 * that the dquot returned is the one that should go in the inode.
741 * Given a udquot and gdquot, attach a ptr to the group dquot in the
742 * udquot as a hint for future lookups. The idea sounds simple, but the
743 * execution isn't, because the udquot might have a group dquot attached
744 * already and getting rid of that gets us into lock ordering constraints.
745 * The process is complicated more by the fact that the dquots may or may not
746 * be locked on entry.
749 xfs_qm_dqattach_grouphint(
757 if ((tmp
= udq
->q_gdquot
)) {
763 udq
->q_gdquot
= NULL
;
765 * We can't keep any dqlocks when calling dqrele,
766 * because the freelist lock comes before dqlocks.
770 * we took a hard reference once upon a time in dqget,
771 * so give it back when the udquot no longer points at it
772 * dqput() does the unlocking of the dquot.
780 ASSERT(XFS_DQ_IS_LOCKED(udq
));
784 ASSERT(XFS_DQ_IS_LOCKED(udq
));
785 ASSERT(XFS_DQ_IS_LOCKED(gdq
));
787 * Somebody could have attached a gdquot here,
788 * when we dropped the uqlock. If so, just do nothing.
790 if (udq
->q_gdquot
== NULL
) {
801 * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON
803 * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed.
804 * Inode may get unlocked and relocked in here, and the caller must deal with
808 xfs_qm_dqattach_locked(
812 xfs_mount_t
*mp
= ip
->i_mount
;
816 if (!XFS_IS_QUOTA_RUNNING(mp
) ||
817 !XFS_IS_QUOTA_ON(mp
) ||
818 !XFS_NOT_DQATTACHED(mp
, ip
) ||
819 ip
->i_ino
== mp
->m_sb
.sb_uquotino
||
820 ip
->i_ino
== mp
->m_sb
.sb_gquotino
)
823 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
825 if (XFS_IS_UQUOTA_ON(mp
)) {
826 error
= xfs_qm_dqattach_one(ip
, ip
->i_d
.di_uid
, XFS_DQ_USER
,
827 flags
& XFS_QMOPT_DQALLOC
,
828 NULL
, &ip
->i_udquot
);
834 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
835 if (XFS_IS_OQUOTA_ON(mp
)) {
836 error
= XFS_IS_GQUOTA_ON(mp
) ?
837 xfs_qm_dqattach_one(ip
, ip
->i_d
.di_gid
, XFS_DQ_GROUP
,
838 flags
& XFS_QMOPT_DQALLOC
,
839 ip
->i_udquot
, &ip
->i_gdquot
) :
840 xfs_qm_dqattach_one(ip
, ip
->i_d
.di_projid
, XFS_DQ_PROJ
,
841 flags
& XFS_QMOPT_DQALLOC
,
842 ip
->i_udquot
, &ip
->i_gdquot
);
844 * Don't worry about the udquot that we may have
845 * attached above. It'll get detached, if not already.
853 * Attach this group quota to the user quota as a hint.
854 * This WON'T, in general, result in a thrash.
857 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
858 ASSERT(ip
->i_udquot
);
859 ASSERT(ip
->i_gdquot
);
862 * We may or may not have the i_udquot locked at this point,
863 * but this check is OK since we don't depend on the i_gdquot to
864 * be accurate 100% all the time. It is just a hint, and this
865 * will succeed in general.
867 if (ip
->i_udquot
->q_gdquot
== ip
->i_gdquot
)
870 * Attach i_gdquot to the gdquot hint inside the i_udquot.
872 xfs_qm_dqattach_grouphint(ip
->i_udquot
, ip
->i_gdquot
);
878 if (XFS_IS_UQUOTA_ON(mp
))
879 ASSERT(ip
->i_udquot
);
880 if (XFS_IS_OQUOTA_ON(mp
))
881 ASSERT(ip
->i_gdquot
);
883 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
890 struct xfs_inode
*ip
,
895 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
896 error
= xfs_qm_dqattach_locked(ip
, flags
);
897 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
903 * Release dquots (and their references) if any.
904 * The inode should be locked EXCL except when this's called by
911 if (!(ip
->i_udquot
|| ip
->i_gdquot
))
914 trace_xfs_dquot_dqdetach(ip
);
916 ASSERT(ip
->i_ino
!= ip
->i_mount
->m_sb
.sb_uquotino
);
917 ASSERT(ip
->i_ino
!= ip
->i_mount
->m_sb
.sb_gquotino
);
919 xfs_qm_dqrele(ip
->i_udquot
);
923 xfs_qm_dqrele(ip
->i_gdquot
);
930 struct xfs_mount
*mp
,
933 struct xfs_quotainfo
*q
= mp
->m_quotainfo
;
935 struct xfs_dquot
*dqp
;
938 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
944 mutex_lock(&q
->qi_dqlist_lock
);
946 * dqpurge_all() also takes the mplist lock and iterate thru all dquots
947 * in quotaoff. However, if the QUOTA_ACTIVE bits are not cleared
948 * when we have the mplist lock, we know that dquots will be consistent
949 * as long as we have it locked.
951 if (!XFS_IS_QUOTA_ON(mp
)) {
952 mutex_unlock(&q
->qi_dqlist_lock
);
955 ASSERT(mutex_is_locked(&q
->qi_dqlist_lock
));
956 list_for_each_entry(dqp
, &q
->qi_dqlist
, q_mplist
) {
958 * If this is vfs_sync calling, then skip the dquots that
959 * don't 'seem' to be dirty. ie. don't acquire dqlock.
960 * This is very similar to what xfs_sync does with inodes.
962 if (flags
& SYNC_TRYLOCK
) {
963 if (!XFS_DQ_IS_DIRTY(dqp
))
965 if (!xfs_qm_dqlock_nowait(dqp
))
972 * Now, find out for sure if this dquot is dirty or not.
974 if (! XFS_DQ_IS_DIRTY(dqp
)) {
979 /* XXX a sentinel would be better */
980 recl
= q
->qi_dqreclaims
;
981 if (!xfs_dqflock_nowait(dqp
)) {
982 if (flags
& SYNC_TRYLOCK
) {
987 * If we can't grab the flush lock then if the caller
988 * really wanted us to give this our best shot, so
989 * see if we can give a push to the buffer before we wait
990 * on the flush lock. At this point, we know that
991 * even though the dquot is being flushed,
992 * it has (new) dirty data.
994 xfs_qm_dqflock_pushbuf_wait(dqp
);
997 * Let go of the mplist lock. We don't want to hold it
998 * across a disk write
1000 mutex_unlock(&q
->qi_dqlist_lock
);
1001 error
= xfs_qm_dqflush(dqp
, flags
);
1003 if (error
&& XFS_FORCED_SHUTDOWN(mp
))
1004 return 0; /* Need to prevent umount failure */
1008 mutex_lock(&q
->qi_dqlist_lock
);
1009 if (recl
!= q
->qi_dqreclaims
) {
1010 if (++restarts
>= XFS_QM_SYNC_MAX_RESTARTS
)
1013 mutex_unlock(&q
->qi_dqlist_lock
);
1018 mutex_unlock(&q
->qi_dqlist_lock
);
1023 * The hash chains and the mplist use the same xfs_dqhash structure as
1024 * their list head, but we can take the mplist qh_lock and one of the
1025 * hash qh_locks at the same time without any problem as they aren't
1028 static struct lock_class_key xfs_quota_mplist_class
;
1031 * This initializes all the quota information that's kept in the
1035 xfs_qm_init_quotainfo(
1038 xfs_quotainfo_t
*qinf
;
1042 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1045 * Tell XQM that we exist as soon as possible.
1047 if ((error
= xfs_qm_hold_quotafs_ref(mp
))) {
1051 qinf
= mp
->m_quotainfo
= kmem_zalloc(sizeof(xfs_quotainfo_t
), KM_SLEEP
);
1054 * See if quotainodes are setup, and if not, allocate them,
1055 * and change the superblock accordingly.
1057 if ((error
= xfs_qm_init_quotainos(mp
))) {
1059 mp
->m_quotainfo
= NULL
;
1063 INIT_LIST_HEAD(&qinf
->qi_dqlist
);
1064 mutex_init(&qinf
->qi_dqlist_lock
);
1065 lockdep_set_class(&qinf
->qi_dqlist_lock
, &xfs_quota_mplist_class
);
1067 qinf
->qi_dqreclaims
= 0;
1069 /* mutex used to serialize quotaoffs */
1070 mutex_init(&qinf
->qi_quotaofflock
);
1072 /* Precalc some constants */
1073 qinf
->qi_dqchunklen
= XFS_FSB_TO_BB(mp
, XFS_DQUOT_CLUSTER_SIZE_FSB
);
1074 ASSERT(qinf
->qi_dqchunklen
);
1075 qinf
->qi_dqperchunk
= BBTOB(qinf
->qi_dqchunklen
);
1076 do_div(qinf
->qi_dqperchunk
, sizeof(xfs_dqblk_t
));
1078 mp
->m_qflags
|= (mp
->m_sb
.sb_qflags
& XFS_ALL_QUOTA_CHKD
);
1081 * We try to get the limits from the superuser's limits fields.
1082 * This is quite hacky, but it is standard quota practice.
1083 * We look at the USR dquot with id == 0 first, but if user quotas
1084 * are not enabled we goto the GRP dquot with id == 0.
1085 * We don't really care to keep separate default limits for user
1086 * and group quotas, at least not at this point.
1088 error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
)0,
1089 XFS_IS_UQUOTA_RUNNING(mp
) ? XFS_DQ_USER
:
1090 (XFS_IS_GQUOTA_RUNNING(mp
) ? XFS_DQ_GROUP
:
1092 XFS_QMOPT_DQSUSER
|XFS_QMOPT_DOWARN
,
1095 xfs_disk_dquot_t
*ddqp
= &dqp
->q_core
;
1098 * The warnings and timers set the grace period given to
1099 * a user or group before he or she can not perform any
1100 * more writing. If it is zero, a default is used.
1102 qinf
->qi_btimelimit
= ddqp
->d_btimer
?
1103 be32_to_cpu(ddqp
->d_btimer
) : XFS_QM_BTIMELIMIT
;
1104 qinf
->qi_itimelimit
= ddqp
->d_itimer
?
1105 be32_to_cpu(ddqp
->d_itimer
) : XFS_QM_ITIMELIMIT
;
1106 qinf
->qi_rtbtimelimit
= ddqp
->d_rtbtimer
?
1107 be32_to_cpu(ddqp
->d_rtbtimer
) : XFS_QM_RTBTIMELIMIT
;
1108 qinf
->qi_bwarnlimit
= ddqp
->d_bwarns
?
1109 be16_to_cpu(ddqp
->d_bwarns
) : XFS_QM_BWARNLIMIT
;
1110 qinf
->qi_iwarnlimit
= ddqp
->d_iwarns
?
1111 be16_to_cpu(ddqp
->d_iwarns
) : XFS_QM_IWARNLIMIT
;
1112 qinf
->qi_rtbwarnlimit
= ddqp
->d_rtbwarns
?
1113 be16_to_cpu(ddqp
->d_rtbwarns
) : XFS_QM_RTBWARNLIMIT
;
1114 qinf
->qi_bhardlimit
= be64_to_cpu(ddqp
->d_blk_hardlimit
);
1115 qinf
->qi_bsoftlimit
= be64_to_cpu(ddqp
->d_blk_softlimit
);
1116 qinf
->qi_ihardlimit
= be64_to_cpu(ddqp
->d_ino_hardlimit
);
1117 qinf
->qi_isoftlimit
= be64_to_cpu(ddqp
->d_ino_softlimit
);
1118 qinf
->qi_rtbhardlimit
= be64_to_cpu(ddqp
->d_rtb_hardlimit
);
1119 qinf
->qi_rtbsoftlimit
= be64_to_cpu(ddqp
->d_rtb_softlimit
);
1122 * We sent the XFS_QMOPT_DQSUSER flag to dqget because
1123 * we don't want this dquot cached. We haven't done a
1124 * quotacheck yet, and quotacheck doesn't like incore dquots.
1126 xfs_qm_dqdestroy(dqp
);
1128 qinf
->qi_btimelimit
= XFS_QM_BTIMELIMIT
;
1129 qinf
->qi_itimelimit
= XFS_QM_ITIMELIMIT
;
1130 qinf
->qi_rtbtimelimit
= XFS_QM_RTBTIMELIMIT
;
1131 qinf
->qi_bwarnlimit
= XFS_QM_BWARNLIMIT
;
1132 qinf
->qi_iwarnlimit
= XFS_QM_IWARNLIMIT
;
1133 qinf
->qi_rtbwarnlimit
= XFS_QM_RTBWARNLIMIT
;
1141 * Gets called when unmounting a filesystem or when all quotas get
1143 * This purges the quota inodes, destroys locks and frees itself.
1146 xfs_qm_destroy_quotainfo(
1149 xfs_quotainfo_t
*qi
;
1151 qi
= mp
->m_quotainfo
;
1153 ASSERT(xfs_Gqm
!= NULL
);
1156 * Release the reference that XQM kept, so that we know
1157 * when the XQM structure should be freed. We cannot assume
1158 * that xfs_Gqm is non-null after this point.
1160 xfs_qm_rele_quotafs_ref(mp
);
1162 ASSERT(list_empty(&qi
->qi_dqlist
));
1163 mutex_destroy(&qi
->qi_dqlist_lock
);
1165 if (qi
->qi_uquotaip
) {
1166 IRELE(qi
->qi_uquotaip
);
1167 qi
->qi_uquotaip
= NULL
; /* paranoia */
1169 if (qi
->qi_gquotaip
) {
1170 IRELE(qi
->qi_gquotaip
);
1171 qi
->qi_gquotaip
= NULL
;
1173 mutex_destroy(&qi
->qi_quotaofflock
);
1175 mp
->m_quotainfo
= NULL
;
1180 /* ------------------- PRIVATE STATIC FUNCTIONS ----------------------- */
1189 mutex_init(&list
->qh_lock
);
1190 INIT_LIST_HEAD(&list
->qh_list
);
1191 list
->qh_version
= 0;
1192 list
->qh_nelems
= 0;
1196 xfs_qm_list_destroy(
1199 mutex_destroy(&(list
->qh_lock
));
1204 * Stripped down version of dqattach. This doesn't attach, or even look at the
1205 * dquots attached to the inode. The rationale is that there won't be any
1206 * attached at the time this is called from quotacheck.
1209 xfs_qm_dqget_noattach(
1211 xfs_dquot_t
**O_udqpp
,
1212 xfs_dquot_t
**O_gdqpp
)
1216 xfs_dquot_t
*udqp
, *gdqp
;
1218 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
1223 if (XFS_IS_UQUOTA_ON(mp
)) {
1224 ASSERT(ip
->i_udquot
== NULL
);
1226 * We want the dquot allocated if it doesn't exist.
1228 if ((error
= xfs_qm_dqget(mp
, ip
, ip
->i_d
.di_uid
, XFS_DQ_USER
,
1229 XFS_QMOPT_DQALLOC
| XFS_QMOPT_DOWARN
,
1232 * Shouldn't be able to turn off quotas here.
1234 ASSERT(error
!= ESRCH
);
1235 ASSERT(error
!= ENOENT
);
1241 if (XFS_IS_OQUOTA_ON(mp
)) {
1242 ASSERT(ip
->i_gdquot
== NULL
);
1245 error
= XFS_IS_GQUOTA_ON(mp
) ?
1246 xfs_qm_dqget(mp
, ip
,
1247 ip
->i_d
.di_gid
, XFS_DQ_GROUP
,
1248 XFS_QMOPT_DQALLOC
|XFS_QMOPT_DOWARN
,
1250 xfs_qm_dqget(mp
, ip
,
1251 ip
->i_d
.di_projid
, XFS_DQ_PROJ
,
1252 XFS_QMOPT_DQALLOC
|XFS_QMOPT_DOWARN
,
1256 xfs_qm_dqrele(udqp
);
1257 ASSERT(error
!= ESRCH
);
1258 ASSERT(error
!= ENOENT
);
1263 /* Reacquire the locks in the right order */
1265 if (! xfs_qm_dqlock_nowait(udqp
)) {
1277 if (udqp
) ASSERT(XFS_DQ_IS_LOCKED(udqp
));
1278 if (gdqp
) ASSERT(XFS_DQ_IS_LOCKED(gdqp
));
1284 * Create an inode and return with a reference already taken, but unlocked
1285 * This is how we create quota inodes
1298 tp
= xfs_trans_alloc(mp
, XFS_TRANS_QM_QINOCREATE
);
1299 if ((error
= xfs_trans_reserve(tp
,
1300 XFS_QM_QINOCREATE_SPACE_RES(mp
),
1301 XFS_CREATE_LOG_RES(mp
), 0,
1302 XFS_TRANS_PERM_LOG_RES
,
1303 XFS_CREATE_LOG_COUNT
))) {
1304 xfs_trans_cancel(tp
, 0);
1308 if ((error
= xfs_dir_ialloc(&tp
, NULL
, S_IFREG
, 1, 0,
1309 &xfs_zerocr
, 0, 1, ip
, &committed
))) {
1310 xfs_trans_cancel(tp
, XFS_TRANS_RELEASE_LOG_RES
|
1316 * Keep an extra reference to this quota inode. This inode is
1317 * locked exclusively and joined to the transaction already.
1319 ASSERT(xfs_isilocked(*ip
, XFS_ILOCK_EXCL
));
1323 * Make the changes in the superblock, and log those too.
1324 * sbfields arg may contain fields other than *QUOTINO;
1325 * VERSIONNUM for example.
1327 spin_lock(&mp
->m_sb_lock
);
1328 if (flags
& XFS_QMOPT_SBVERSION
) {
1329 ASSERT(!xfs_sb_version_hasquota(&mp
->m_sb
));
1330 ASSERT((sbfields
& (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
1331 XFS_SB_GQUOTINO
| XFS_SB_QFLAGS
)) ==
1332 (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
1333 XFS_SB_GQUOTINO
| XFS_SB_QFLAGS
));
1335 xfs_sb_version_addquota(&mp
->m_sb
);
1336 mp
->m_sb
.sb_uquotino
= NULLFSINO
;
1337 mp
->m_sb
.sb_gquotino
= NULLFSINO
;
1339 /* qflags will get updated _after_ quotacheck */
1340 mp
->m_sb
.sb_qflags
= 0;
1342 if (flags
& XFS_QMOPT_UQUOTA
)
1343 mp
->m_sb
.sb_uquotino
= (*ip
)->i_ino
;
1345 mp
->m_sb
.sb_gquotino
= (*ip
)->i_ino
;
1346 spin_unlock(&mp
->m_sb_lock
);
1347 xfs_mod_sb(tp
, sbfields
);
1349 if ((error
= xfs_trans_commit(tp
, XFS_TRANS_RELEASE_LOG_RES
))) {
1350 xfs_fs_cmn_err(CE_ALERT
, mp
, "XFS qino_alloc failed!");
1358 xfs_qm_reset_dqcounts(
1364 xfs_disk_dquot_t
*ddq
;
1367 trace_xfs_reset_dqcounts(bp
, _RET_IP_
);
1370 * Reset all counters and timers. They'll be
1371 * started afresh by xfs_qm_quotacheck.
1374 j
= XFS_FSB_TO_B(mp
, XFS_DQUOT_CLUSTER_SIZE_FSB
);
1375 do_div(j
, sizeof(xfs_dqblk_t
));
1376 ASSERT(mp
->m_quotainfo
->qi_dqperchunk
== j
);
1378 ddq
= (xfs_disk_dquot_t
*)XFS_BUF_PTR(bp
);
1379 for (j
= 0; j
< mp
->m_quotainfo
->qi_dqperchunk
; j
++) {
1381 * Do a sanity check, and if needed, repair the dqblk. Don't
1382 * output any warnings because it's perfectly possible to
1383 * find uninitialised dquot blks. See comment in xfs_qm_dqcheck.
1385 (void) xfs_qm_dqcheck(ddq
, id
+j
, type
, XFS_QMOPT_DQREPAIR
,
1389 ddq
->d_rtbcount
= 0;
1392 ddq
->d_rtbtimer
= 0;
1395 ddq
->d_rtbwarns
= 0;
1396 ddq
= (xfs_disk_dquot_t
*) ((xfs_dqblk_t
*)ddq
+ 1);
1405 xfs_filblks_t blkcnt
,
1416 incr
= (blkcnt
> XFS_QM_MAX_DQCLUSTER_LOGSZ
) ?
1417 XFS_QM_MAX_DQCLUSTER_LOGSZ
: blkcnt
;
1418 type
= flags
& XFS_QMOPT_UQUOTA
? XFS_DQ_USER
:
1419 (flags
& XFS_QMOPT_PQUOTA
? XFS_DQ_PROJ
: XFS_DQ_GROUP
);
1423 * Blkcnt arg can be a very big number, and might even be
1424 * larger than the log itself. So, we have to break it up into
1425 * manageable-sized transactions.
1426 * Note that we don't start a permanent transaction here; we might
1427 * not be able to get a log reservation for the whole thing up front,
1428 * and we don't really care to either, because we just discard
1429 * everything if we were to crash in the middle of this loop.
1432 error
= xfs_trans_read_buf(mp
, NULL
, mp
->m_ddev_targp
,
1433 XFS_FSB_TO_DADDR(mp
, bno
),
1434 mp
->m_quotainfo
->qi_dqchunklen
, 0, &bp
);
1438 xfs_qm_reset_dqcounts(mp
, bp
, firstid
, type
);
1439 xfs_bdwrite(mp
, bp
);
1441 * goto the next block.
1444 firstid
+= mp
->m_quotainfo
->qi_dqperchunk
;
1450 * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a
1451 * caller supplied function for every chunk of dquots that we find.
1459 xfs_bmbt_irec_t
*map
;
1460 int i
, nmaps
; /* number of map entries */
1461 int error
; /* return value */
1462 xfs_fileoff_t lblkno
;
1463 xfs_filblks_t maxlblkcnt
;
1465 xfs_fsblock_t rablkno
;
1466 xfs_filblks_t rablkcnt
;
1470 * This looks racy, but we can't keep an inode lock across a
1471 * trans_reserve. But, this gets called during quotacheck, and that
1472 * happens only at mount time which is single threaded.
1474 if (qip
->i_d
.di_nblocks
== 0)
1477 map
= kmem_alloc(XFS_DQITER_MAP_SIZE
* sizeof(*map
), KM_SLEEP
);
1480 maxlblkcnt
= XFS_B_TO_FSB(mp
, (xfs_ufsize_t
)XFS_MAXIOFFSET(mp
));
1482 nmaps
= XFS_DQITER_MAP_SIZE
;
1484 * We aren't changing the inode itself. Just changing
1485 * some of its data. No new blocks are added here, and
1486 * the inode is never added to the transaction.
1488 xfs_ilock(qip
, XFS_ILOCK_SHARED
);
1489 error
= xfs_bmapi(NULL
, qip
, lblkno
,
1490 maxlblkcnt
- lblkno
,
1493 0, map
, &nmaps
, NULL
);
1494 xfs_iunlock(qip
, XFS_ILOCK_SHARED
);
1498 ASSERT(nmaps
<= XFS_DQITER_MAP_SIZE
);
1499 for (i
= 0; i
< nmaps
; i
++) {
1500 ASSERT(map
[i
].br_startblock
!= DELAYSTARTBLOCK
);
1501 ASSERT(map
[i
].br_blockcount
);
1504 lblkno
+= map
[i
].br_blockcount
;
1506 if (map
[i
].br_startblock
== HOLESTARTBLOCK
)
1509 firstid
= (xfs_dqid_t
) map
[i
].br_startoff
*
1510 mp
->m_quotainfo
->qi_dqperchunk
;
1512 * Do a read-ahead on the next extent.
1514 if ((i
+1 < nmaps
) &&
1515 (map
[i
+1].br_startblock
!= HOLESTARTBLOCK
)) {
1516 rablkcnt
= map
[i
+1].br_blockcount
;
1517 rablkno
= map
[i
+1].br_startblock
;
1518 while (rablkcnt
--) {
1519 xfs_baread(mp
->m_ddev_targp
,
1520 XFS_FSB_TO_DADDR(mp
, rablkno
),
1521 mp
->m_quotainfo
->qi_dqchunklen
);
1526 * Iterate thru all the blks in the extent and
1527 * reset the counters of all the dquots inside them.
1529 if ((error
= xfs_qm_dqiter_bufs(mp
,
1531 map
[i
].br_startblock
,
1532 map
[i
].br_blockcount
,
1540 } while (nmaps
> 0);
1548 * Called by dqusage_adjust in doing a quotacheck.
1549 * Given the inode, and a dquot (either USR or GRP, doesn't matter),
1550 * this updates its incore copy as well as the buffer copy. This is
1551 * so that once the quotacheck is done, we can just log all the buffers,
1552 * as opposed to logging numerous updates to individual dquots.
1555 xfs_qm_quotacheck_dqadjust(
1560 ASSERT(XFS_DQ_IS_LOCKED(dqp
));
1562 trace_xfs_dqadjust(dqp
);
1565 * Adjust the inode count and the block count to reflect this inode's
1568 be64_add_cpu(&dqp
->q_core
.d_icount
, 1);
1569 dqp
->q_res_icount
++;
1571 be64_add_cpu(&dqp
->q_core
.d_bcount
, nblks
);
1572 dqp
->q_res_bcount
+= nblks
;
1575 be64_add_cpu(&dqp
->q_core
.d_rtbcount
, rtblks
);
1576 dqp
->q_res_rtbcount
+= rtblks
;
1580 * Set default limits, adjust timers (since we changed usages)
1582 * There are no timers for the default values set in the root dquot.
1584 if (dqp
->q_core
.d_id
) {
1585 xfs_qm_adjust_dqlimits(dqp
->q_mount
, &dqp
->q_core
);
1586 xfs_qm_adjust_dqtimers(dqp
->q_mount
, &dqp
->q_core
);
1589 dqp
->dq_flags
|= XFS_DQ_DIRTY
;
1595 xfs_qcnt_t
*O_rtblks
)
1597 xfs_filblks_t rtblks
; /* total rt blks */
1598 xfs_extnum_t idx
; /* extent record index */
1599 xfs_ifork_t
*ifp
; /* inode fork pointer */
1600 xfs_extnum_t nextents
; /* number of extent entries */
1603 ASSERT(XFS_IS_REALTIME_INODE(ip
));
1604 ifp
= XFS_IFORK_PTR(ip
, XFS_DATA_FORK
);
1605 if (!(ifp
->if_flags
& XFS_IFEXTENTS
)) {
1606 if ((error
= xfs_iread_extents(NULL
, ip
, XFS_DATA_FORK
)))
1610 nextents
= ifp
->if_bytes
/ (uint
)sizeof(xfs_bmbt_rec_t
);
1611 for (idx
= 0; idx
< nextents
; idx
++)
1612 rtblks
+= xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp
, idx
));
1613 *O_rtblks
= (xfs_qcnt_t
)rtblks
;
1618 * callback routine supplied to bulkstat(). Given an inumber, find its
1619 * dquots and update them to account for resources taken by that inode.
1623 xfs_qm_dqusage_adjust(
1624 xfs_mount_t
*mp
, /* mount point for filesystem */
1625 xfs_ino_t ino
, /* inode number to get data for */
1626 void __user
*buffer
, /* not used */
1627 int ubsize
, /* not used */
1628 int *ubused
, /* not used */
1629 int *res
) /* result code value */
1632 xfs_dquot_t
*udqp
, *gdqp
;
1633 xfs_qcnt_t nblks
, rtblks
;
1636 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1639 * rootino must have its resources accounted for, not so with the quota
1642 if (ino
== mp
->m_sb
.sb_uquotino
|| ino
== mp
->m_sb
.sb_gquotino
) {
1643 *res
= BULKSTAT_RV_NOTHING
;
1644 return XFS_ERROR(EINVAL
);
1648 * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget
1649 * interface expects the inode to be exclusively locked because that's
1650 * the case in all other instances. It's OK that we do this because
1651 * quotacheck is done only at mount time.
1653 if ((error
= xfs_iget(mp
, NULL
, ino
, 0, XFS_ILOCK_EXCL
, &ip
))) {
1654 *res
= BULKSTAT_RV_NOTHING
;
1659 * Obtain the locked dquots. In case of an error (eg. allocation
1660 * fails for ENOSPC), we return the negative of the error number
1661 * to bulkstat, so that it can get propagated to quotacheck() and
1662 * making us disable quotas for the file system.
1664 if ((error
= xfs_qm_dqget_noattach(ip
, &udqp
, &gdqp
))) {
1665 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1667 *res
= BULKSTAT_RV_GIVEUP
;
1672 if (! XFS_IS_REALTIME_INODE(ip
)) {
1673 nblks
= (xfs_qcnt_t
)ip
->i_d
.di_nblocks
;
1676 * Walk thru the extent list and count the realtime blocks.
1678 if ((error
= xfs_qm_get_rtblks(ip
, &rtblks
))) {
1679 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1685 *res
= BULKSTAT_RV_GIVEUP
;
1688 nblks
= (xfs_qcnt_t
)ip
->i_d
.di_nblocks
- rtblks
;
1690 ASSERT(ip
->i_delayed_blks
== 0);
1693 * We can't release the inode while holding its dquot locks.
1694 * The inode can go into inactive and might try to acquire the dquotlocks.
1695 * So, just unlock here and do a vn_rele at the end.
1697 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1700 * Add the (disk blocks and inode) resources occupied by this
1701 * inode to its dquots. We do this adjustment in the incore dquot,
1702 * and also copy the changes to its buffer.
1703 * We don't care about putting these changes in a transaction
1704 * envelope because if we crash in the middle of a 'quotacheck'
1705 * we have to start from the beginning anyway.
1706 * Once we're done, we'll log all the dquot bufs.
1708 * The *QUOTA_ON checks below may look pretty racy, but quotachecks
1709 * and quotaoffs don't race. (Quotachecks happen at mount time only).
1711 if (XFS_IS_UQUOTA_ON(mp
)) {
1713 xfs_qm_quotacheck_dqadjust(udqp
, nblks
, rtblks
);
1716 if (XFS_IS_OQUOTA_ON(mp
)) {
1718 xfs_qm_quotacheck_dqadjust(gdqp
, nblks
, rtblks
);
1722 * Now release the inode. This will send it to 'inactive', and
1723 * possibly even free blocks.
1730 *res
= BULKSTAT_RV_DIDONE
;
1735 * Walk thru all the filesystem inodes and construct a consistent view
1736 * of the disk quota world. If the quotacheck fails, disable quotas.
1742 int done
, count
, error
;
1745 xfs_inode_t
*uip
, *gip
;
1753 ASSERT(mp
->m_quotainfo
->qi_uquotaip
|| mp
->m_quotainfo
->qi_gquotaip
);
1754 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1757 * There should be no cached dquots. The (simplistic) quotacheck
1758 * algorithm doesn't like that.
1760 ASSERT(list_empty(&mp
->m_quotainfo
->qi_dqlist
));
1762 cmn_err(CE_NOTE
, "XFS quotacheck %s: Please wait.", mp
->m_fsname
);
1765 * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset
1766 * their counters to zero. We need a clean slate.
1767 * We don't log our changes till later.
1769 uip
= mp
->m_quotainfo
->qi_uquotaip
;
1771 error
= xfs_qm_dqiterate(mp
, uip
, XFS_QMOPT_UQUOTA
);
1774 flags
|= XFS_UQUOTA_CHKD
;
1777 gip
= mp
->m_quotainfo
->qi_gquotaip
;
1779 error
= xfs_qm_dqiterate(mp
, gip
, XFS_IS_GQUOTA_ON(mp
) ?
1780 XFS_QMOPT_GQUOTA
: XFS_QMOPT_PQUOTA
);
1783 flags
|= XFS_OQUOTA_CHKD
;
1788 * Iterate thru all the inodes in the file system,
1789 * adjusting the corresponding dquot counters in core.
1791 error
= xfs_bulkstat(mp
, &lastino
, &count
,
1792 xfs_qm_dqusage_adjust
,
1793 structsz
, NULL
, &done
);
1800 * We've made all the changes that we need to make incore.
1801 * Flush them down to disk buffers if everything was updated
1805 error
= xfs_qm_dqflush_all(mp
, 0);
1808 * We can get this error if we couldn't do a dquot allocation inside
1809 * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the
1810 * dirty dquots that might be cached, we just want to get rid of them
1811 * and turn quotaoff. The dquots won't be attached to any of the inodes
1812 * at this point (because we intentionally didn't in dqget_noattach).
1815 xfs_qm_dqpurge_all(mp
, XFS_QMOPT_QUOTALL
);
1820 * We didn't log anything, because if we crashed, we'll have to
1821 * start the quotacheck from scratch anyway. However, we must make
1822 * sure that our dquot changes are secure before we put the
1823 * quotacheck'd stamp on the superblock. So, here we do a synchronous
1826 XFS_bflush(mp
->m_ddev_targp
);
1829 * If one type of quotas is off, then it will lose its
1830 * quotachecked status, since we won't be doing accounting for
1831 * that type anymore.
1833 mp
->m_qflags
&= ~(XFS_OQUOTA_CHKD
| XFS_UQUOTA_CHKD
);
1834 mp
->m_qflags
|= flags
;
1836 xfs_qm_dquot_list_print(mp
);
1840 cmn_err(CE_WARN
, "XFS quotacheck %s: Unsuccessful (Error %d): "
1841 "Disabling quotas.",
1842 mp
->m_fsname
, error
);
1844 * We must turn off quotas.
1846 ASSERT(mp
->m_quotainfo
!= NULL
);
1847 ASSERT(xfs_Gqm
!= NULL
);
1848 xfs_qm_destroy_quotainfo(mp
);
1849 if (xfs_mount_reset_sbqflags(mp
)) {
1850 cmn_err(CE_WARN
, "XFS quotacheck %s: "
1851 "Failed to reset quota flags.", mp
->m_fsname
);
1854 cmn_err(CE_NOTE
, "XFS quotacheck %s: Done.", mp
->m_fsname
);
1860 * This is called after the superblock has been read in and we're ready to
1861 * iget the quota inodes.
1864 xfs_qm_init_quotainos(
1867 xfs_inode_t
*uip
, *gip
;
1872 ASSERT(mp
->m_quotainfo
);
1878 * Get the uquota and gquota inodes
1880 if (xfs_sb_version_hasquota(&mp
->m_sb
)) {
1881 if (XFS_IS_UQUOTA_ON(mp
) &&
1882 mp
->m_sb
.sb_uquotino
!= NULLFSINO
) {
1883 ASSERT(mp
->m_sb
.sb_uquotino
> 0);
1884 if ((error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_uquotino
,
1886 return XFS_ERROR(error
);
1888 if (XFS_IS_OQUOTA_ON(mp
) &&
1889 mp
->m_sb
.sb_gquotino
!= NULLFSINO
) {
1890 ASSERT(mp
->m_sb
.sb_gquotino
> 0);
1891 if ((error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_gquotino
,
1895 return XFS_ERROR(error
);
1899 flags
|= XFS_QMOPT_SBVERSION
;
1900 sbflags
|= (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
1901 XFS_SB_GQUOTINO
| XFS_SB_QFLAGS
);
1905 * Create the two inodes, if they don't exist already. The changes
1906 * made above will get added to a transaction and logged in one of
1907 * the qino_alloc calls below. If the device is readonly,
1908 * temporarily switch to read-write to do this.
1910 if (XFS_IS_UQUOTA_ON(mp
) && uip
== NULL
) {
1911 if ((error
= xfs_qm_qino_alloc(mp
, &uip
,
1912 sbflags
| XFS_SB_UQUOTINO
,
1913 flags
| XFS_QMOPT_UQUOTA
)))
1914 return XFS_ERROR(error
);
1916 flags
&= ~XFS_QMOPT_SBVERSION
;
1918 if (XFS_IS_OQUOTA_ON(mp
) && gip
== NULL
) {
1919 flags
|= (XFS_IS_GQUOTA_ON(mp
) ?
1920 XFS_QMOPT_GQUOTA
: XFS_QMOPT_PQUOTA
);
1921 error
= xfs_qm_qino_alloc(mp
, &gip
,
1922 sbflags
| XFS_SB_GQUOTINO
, flags
);
1927 return XFS_ERROR(error
);
1931 mp
->m_quotainfo
->qi_uquotaip
= uip
;
1932 mp
->m_quotainfo
->qi_gquotaip
= gip
;
1940 * Just pop the least recently used dquot off the freelist and
1941 * recycle it. The returned dquot is locked.
1943 STATIC xfs_dquot_t
*
1944 xfs_qm_dqreclaim_one(void)
1946 xfs_dquot_t
*dqpout
;
1953 /* lockorder: hashchainlock, freelistlock, mplistlock, dqlock, dqflock */
1955 mutex_lock(&xfs_Gqm
->qm_dqfrlist_lock
);
1957 list_for_each_entry(dqp
, &xfs_Gqm
->qm_dqfrlist
, q_freelist
) {
1958 struct xfs_mount
*mp
= dqp
->q_mount
;
1962 * We are racing with dqlookup here. Naturally we don't
1963 * want to reclaim a dquot that lookup wants. We release the
1964 * freelist lock and start over, so that lookup will grab
1965 * both the dquot and the freelistlock.
1967 if (dqp
->dq_flags
& XFS_DQ_WANT
) {
1968 ASSERT(! (dqp
->dq_flags
& XFS_DQ_INACTIVE
));
1970 trace_xfs_dqreclaim_want(dqp
);
1973 mutex_unlock(&xfs_Gqm
->qm_dqfrlist_lock
);
1974 if (++restarts
>= XFS_QM_RECLAIM_MAX_RESTARTS
)
1976 XQM_STATS_INC(xqmstats
.xs_qm_dqwants
);
1981 * If the dquot is inactive, we are assured that it is
1982 * not on the mplist or the hashlist, and that makes our
1985 if (dqp
->dq_flags
& XFS_DQ_INACTIVE
) {
1987 ASSERT(! XFS_DQ_IS_DIRTY(dqp
));
1988 ASSERT(list_empty(&dqp
->q_hashlist
));
1989 ASSERT(list_empty(&dqp
->q_mplist
));
1990 list_del_init(&dqp
->q_freelist
);
1991 xfs_Gqm
->qm_dqfrlist_cnt
--;
1994 XQM_STATS_INC(xqmstats
.xs_qm_dqinact_reclaims
);
1998 ASSERT(dqp
->q_hash
);
1999 ASSERT(!list_empty(&dqp
->q_mplist
));
2002 * Try to grab the flush lock. If this dquot is in the process of
2003 * getting flushed to disk, we don't want to reclaim it.
2005 if (!xfs_dqflock_nowait(dqp
)) {
2011 * We have the flush lock so we know that this is not in the
2012 * process of being flushed. So, if this is dirty, flush it
2013 * DELWRI so that we don't get a freelist infested with
2016 if (XFS_DQ_IS_DIRTY(dqp
)) {
2019 trace_xfs_dqreclaim_dirty(dqp
);
2022 * We flush it delayed write, so don't bother
2023 * releasing the freelist lock.
2025 error
= xfs_qm_dqflush(dqp
, 0);
2027 xfs_fs_cmn_err(CE_WARN
, mp
,
2028 "xfs_qm_dqreclaim: dquot %p flush failed", dqp
);
2030 xfs_dqunlock(dqp
); /* dqflush unlocks dqflock */
2035 * We're trying to get the hashlock out of order. This races
2036 * with dqlookup; so, we giveup and goto the next dquot if
2037 * we couldn't get the hashlock. This way, we won't starve
2038 * a dqlookup process that holds the hashlock that is
2039 * waiting for the freelist lock.
2041 if (!mutex_trylock(&dqp
->q_hash
->qh_lock
)) {
2047 * This races with dquot allocation code as well as dqflush_all
2048 * and reclaim code. So, if we failed to grab the mplist lock,
2049 * giveup everything and start over.
2051 if (!mutex_trylock(&mp
->m_quotainfo
->qi_dqlist_lock
)) {
2053 mutex_unlock(&dqp
->q_hash
->qh_lock
);
2056 mutex_unlock(&xfs_Gqm
->qm_dqfrlist_lock
);
2057 if (restarts
++ >= XFS_QM_RECLAIM_MAX_RESTARTS
)
2062 ASSERT(dqp
->q_nrefs
== 0);
2063 list_del_init(&dqp
->q_mplist
);
2064 mp
->m_quotainfo
->qi_dquots
--;
2065 mp
->m_quotainfo
->qi_dqreclaims
++;
2066 list_del_init(&dqp
->q_hashlist
);
2067 dqp
->q_hash
->qh_version
++;
2068 list_del_init(&dqp
->q_freelist
);
2069 xfs_Gqm
->qm_dqfrlist_cnt
--;
2071 mutex_unlock(&mp
->m_quotainfo
->qi_dqlist_lock
);
2072 mutex_unlock(&dqp
->q_hash
->qh_lock
);
2078 if (restarts
>= XFS_QM_RECLAIM_MAX_RESTARTS
)
2081 mutex_unlock(&xfs_Gqm
->qm_dqfrlist_lock
);
2086 * Traverse the freelist of dquots and attempt to reclaim a maximum of
2087 * 'howmany' dquots. This operation races with dqlookup(), and attempts to
2088 * favor the lookup function ...
2091 xfs_qm_shake_freelist(
2100 while (nreclaimed
< howmany
) {
2101 dqp
= xfs_qm_dqreclaim_one();
2104 xfs_qm_dqdestroy(dqp
);
2111 * The kmem_shake interface is invoked when memory is running low.
2116 struct shrinker
*shrink
,
2120 int ndqused
, nfree
, n
;
2122 if (!kmem_shake_allow(gfp_mask
))
2127 nfree
= xfs_Gqm
->qm_dqfrlist_cnt
; /* free dquots */
2128 /* incore dquots in all f/s's */
2129 ndqused
= atomic_read(&xfs_Gqm
->qm_totaldquots
) - nfree
;
2131 ASSERT(ndqused
>= 0);
2133 if (nfree
<= ndqused
&& nfree
< ndquot
)
2136 ndqused
*= xfs_Gqm
->qm_dqfree_ratio
; /* target # of free dquots */
2137 n
= nfree
- ndqused
- ndquot
; /* # over target */
2139 return xfs_qm_shake_freelist(MAX(nfree
, n
));
2143 /*------------------------------------------------------------------*/
2146 * Return a new incore dquot. Depending on the number of
2147 * dquots in the system, we either allocate a new one on the kernel heap,
2148 * or reclaim a free one.
2149 * Return value is B_TRUE if we allocated a new dquot, B_FALSE if we managed
2150 * to reclaim an existing one from the freelist.
2153 xfs_qm_dqalloc_incore(
2154 xfs_dquot_t
**O_dqpp
)
2159 * Check against high water mark to see if we want to pop
2160 * a nincompoop dquot off the freelist.
2162 if (atomic_read(&xfs_Gqm
->qm_totaldquots
) >= ndquot
) {
2164 * Try to recycle a dquot from the freelist.
2166 if ((dqp
= xfs_qm_dqreclaim_one())) {
2167 XQM_STATS_INC(xqmstats
.xs_qm_dqreclaims
);
2169 * Just zero the core here. The rest will get
2170 * reinitialized by caller. XXX we shouldn't even
2173 memset(&dqp
->q_core
, 0, sizeof(dqp
->q_core
));
2177 XQM_STATS_INC(xqmstats
.xs_qm_dqreclaim_misses
);
2181 * Allocate a brand new dquot on the kernel heap and return it
2182 * to the caller to initialize.
2184 ASSERT(xfs_Gqm
->qm_dqzone
!= NULL
);
2185 *O_dqpp
= kmem_zone_zalloc(xfs_Gqm
->qm_dqzone
, KM_SLEEP
);
2186 atomic_inc(&xfs_Gqm
->qm_totaldquots
);
2193 * Start a transaction and write the incore superblock changes to
2194 * disk. flags parameter indicates which fields have changed.
2197 xfs_qm_write_sb_changes(
2205 cmn_err(CE_NOTE
, "Writing superblock quota changes :%s", mp
->m_fsname
);
2207 tp
= xfs_trans_alloc(mp
, XFS_TRANS_QM_SBCHANGE
);
2208 if ((error
= xfs_trans_reserve(tp
, 0,
2209 mp
->m_sb
.sb_sectsize
+ 128, 0,
2211 XFS_DEFAULT_LOG_COUNT
))) {
2212 xfs_trans_cancel(tp
, 0);
2216 xfs_mod_sb(tp
, flags
);
2217 error
= xfs_trans_commit(tp
, 0);
2223 /* --------------- utility functions for vnodeops ---------------- */
2227 * Given an inode, a uid and gid (from cred_t) make sure that we have
2228 * allocated relevant dquot(s) on disk, and that we won't exceed inode
2229 * quotas by creating this file.
2230 * This also attaches dquot(s) to the given inode after locking it,
2231 * and returns the dquots corresponding to the uid and/or gid.
2233 * in : inode (unlocked)
2234 * out : udquot, gdquot with references taken and unlocked
2238 struct xfs_inode
*ip
,
2243 struct xfs_dquot
**O_udqpp
,
2244 struct xfs_dquot
**O_gdqpp
)
2246 struct xfs_mount
*mp
= ip
->i_mount
;
2247 struct xfs_dquot
*uq
, *gq
;
2251 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
2254 lockflags
= XFS_ILOCK_EXCL
;
2255 xfs_ilock(ip
, lockflags
);
2257 if ((flags
& XFS_QMOPT_INHERIT
) && XFS_INHERIT_GID(ip
))
2258 gid
= ip
->i_d
.di_gid
;
2261 * Attach the dquot(s) to this inode, doing a dquot allocation
2262 * if necessary. The dquot(s) will not be locked.
2264 if (XFS_NOT_DQATTACHED(mp
, ip
)) {
2265 error
= xfs_qm_dqattach_locked(ip
, XFS_QMOPT_DQALLOC
);
2267 xfs_iunlock(ip
, lockflags
);
2273 if ((flags
& XFS_QMOPT_UQUOTA
) && XFS_IS_UQUOTA_ON(mp
)) {
2274 if (ip
->i_d
.di_uid
!= uid
) {
2276 * What we need is the dquot that has this uid, and
2277 * if we send the inode to dqget, the uid of the inode
2278 * takes priority over what's sent in the uid argument.
2279 * We must unlock inode here before calling dqget if
2280 * we're not sending the inode, because otherwise
2281 * we'll deadlock by doing trans_reserve while
2284 xfs_iunlock(ip
, lockflags
);
2285 if ((error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
) uid
,
2290 ASSERT(error
!= ENOENT
);
2294 * Get the ilock in the right order.
2297 lockflags
= XFS_ILOCK_SHARED
;
2298 xfs_ilock(ip
, lockflags
);
2301 * Take an extra reference, because we'll return
2304 ASSERT(ip
->i_udquot
);
2311 if ((flags
& XFS_QMOPT_GQUOTA
) && XFS_IS_GQUOTA_ON(mp
)) {
2312 if (ip
->i_d
.di_gid
!= gid
) {
2313 xfs_iunlock(ip
, lockflags
);
2314 if ((error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
)gid
,
2321 ASSERT(error
!= ENOENT
);
2325 lockflags
= XFS_ILOCK_SHARED
;
2326 xfs_ilock(ip
, lockflags
);
2328 ASSERT(ip
->i_gdquot
);
2334 } else if ((flags
& XFS_QMOPT_PQUOTA
) && XFS_IS_PQUOTA_ON(mp
)) {
2335 if (ip
->i_d
.di_projid
!= prid
) {
2336 xfs_iunlock(ip
, lockflags
);
2337 if ((error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
)prid
,
2344 ASSERT(error
!= ENOENT
);
2348 lockflags
= XFS_ILOCK_SHARED
;
2349 xfs_ilock(ip
, lockflags
);
2351 ASSERT(ip
->i_gdquot
);
2359 trace_xfs_dquot_dqalloc(ip
);
2361 xfs_iunlock(ip
, lockflags
);
2374 * Actually transfer ownership, and do dquot modifications.
2375 * These were already reserved.
2381 xfs_dquot_t
**IO_olddq
,
2384 xfs_dquot_t
*prevdq
;
2385 uint bfield
= XFS_IS_REALTIME_INODE(ip
) ?
2386 XFS_TRANS_DQ_RTBCOUNT
: XFS_TRANS_DQ_BCOUNT
;
2389 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
2390 ASSERT(XFS_IS_QUOTA_RUNNING(ip
->i_mount
));
2395 ASSERT(prevdq
!= newdq
);
2397 xfs_trans_mod_dquot(tp
, prevdq
, bfield
, -(ip
->i_d
.di_nblocks
));
2398 xfs_trans_mod_dquot(tp
, prevdq
, XFS_TRANS_DQ_ICOUNT
, -1);
2400 /* the sparkling new dquot */
2401 xfs_trans_mod_dquot(tp
, newdq
, bfield
, ip
->i_d
.di_nblocks
);
2402 xfs_trans_mod_dquot(tp
, newdq
, XFS_TRANS_DQ_ICOUNT
, 1);
2405 * Take an extra reference, because the inode
2406 * is going to keep this dquot pointer even
2407 * after the trans_commit.
2411 xfs_dqunlock(newdq
);
2418 * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID).
2421 xfs_qm_vop_chown_reserve(
2428 xfs_mount_t
*mp
= ip
->i_mount
;
2429 uint delblks
, blkflags
, prjflags
= 0;
2430 xfs_dquot_t
*unresudq
, *unresgdq
, *delblksudq
, *delblksgdq
;
2434 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
|XFS_ILOCK_SHARED
));
2435 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
2437 delblks
= ip
->i_delayed_blks
;
2438 delblksudq
= delblksgdq
= unresudq
= unresgdq
= NULL
;
2439 blkflags
= XFS_IS_REALTIME_INODE(ip
) ?
2440 XFS_QMOPT_RES_RTBLKS
: XFS_QMOPT_RES_REGBLKS
;
2442 if (XFS_IS_UQUOTA_ON(mp
) && udqp
&&
2443 ip
->i_d
.di_uid
!= (uid_t
)be32_to_cpu(udqp
->q_core
.d_id
)) {
2446 * If there are delayed allocation blocks, then we have to
2447 * unreserve those from the old dquot, and add them to the
2451 ASSERT(ip
->i_udquot
);
2452 unresudq
= ip
->i_udquot
;
2455 if (XFS_IS_OQUOTA_ON(ip
->i_mount
) && gdqp
) {
2456 if (XFS_IS_PQUOTA_ON(ip
->i_mount
) &&
2457 ip
->i_d
.di_projid
!= be32_to_cpu(gdqp
->q_core
.d_id
))
2458 prjflags
= XFS_QMOPT_ENOSPC
;
2461 (XFS_IS_GQUOTA_ON(ip
->i_mount
) &&
2462 ip
->i_d
.di_gid
!= be32_to_cpu(gdqp
->q_core
.d_id
))) {
2465 ASSERT(ip
->i_gdquot
);
2466 unresgdq
= ip
->i_gdquot
;
2471 if ((error
= xfs_trans_reserve_quota_bydquots(tp
, ip
->i_mount
,
2472 delblksudq
, delblksgdq
, ip
->i_d
.di_nblocks
, 1,
2473 flags
| blkflags
| prjflags
)))
2477 * Do the delayed blks reservations/unreservations now. Since, these
2478 * are done without the help of a transaction, if a reservation fails
2479 * its previous reservations won't be automatically undone by trans
2480 * code. So, we have to do it manually here.
2484 * Do the reservations first. Unreservation can't fail.
2486 ASSERT(delblksudq
|| delblksgdq
);
2487 ASSERT(unresudq
|| unresgdq
);
2488 if ((error
= xfs_trans_reserve_quota_bydquots(NULL
, ip
->i_mount
,
2489 delblksudq
, delblksgdq
, (xfs_qcnt_t
)delblks
, 0,
2490 flags
| blkflags
| prjflags
)))
2492 xfs_trans_reserve_quota_bydquots(NULL
, ip
->i_mount
,
2493 unresudq
, unresgdq
, -((xfs_qcnt_t
)delblks
), 0,
2501 xfs_qm_vop_rename_dqattach(
2502 struct xfs_inode
**i_tab
)
2504 struct xfs_mount
*mp
= i_tab
[0]->i_mount
;
2507 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
2510 for (i
= 0; (i
< 4 && i_tab
[i
]); i
++) {
2511 struct xfs_inode
*ip
= i_tab
[i
];
2515 * Watch out for duplicate entries in the table.
2517 if (i
== 0 || ip
!= i_tab
[i
-1]) {
2518 if (XFS_NOT_DQATTACHED(mp
, ip
)) {
2519 error
= xfs_qm_dqattach(ip
, 0);
2529 xfs_qm_vop_create_dqattach(
2530 struct xfs_trans
*tp
,
2531 struct xfs_inode
*ip
,
2532 struct xfs_dquot
*udqp
,
2533 struct xfs_dquot
*gdqp
)
2535 struct xfs_mount
*mp
= tp
->t_mountp
;
2537 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
2540 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
2541 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
2547 ASSERT(ip
->i_udquot
== NULL
);
2548 ip
->i_udquot
= udqp
;
2549 ASSERT(XFS_IS_UQUOTA_ON(mp
));
2550 ASSERT(ip
->i_d
.di_uid
== be32_to_cpu(udqp
->q_core
.d_id
));
2551 xfs_trans_mod_dquot(tp
, udqp
, XFS_TRANS_DQ_ICOUNT
, 1);
2557 ASSERT(ip
->i_gdquot
== NULL
);
2558 ip
->i_gdquot
= gdqp
;
2559 ASSERT(XFS_IS_OQUOTA_ON(mp
));
2560 ASSERT((XFS_IS_GQUOTA_ON(mp
) ?
2561 ip
->i_d
.di_gid
: ip
->i_d
.di_projid
) ==
2562 be32_to_cpu(gdqp
->q_core
.d_id
));
2563 xfs_trans_mod_dquot(tp
, gdqp
, XFS_TRANS_DQ_ICOUNT
, 1);