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"
27 #include "xfs_alloc.h"
28 #include "xfs_dmapi.h"
29 #include "xfs_quota.h"
30 #include "xfs_mount.h"
31 #include "xfs_bmap_btree.h"
32 #include "xfs_alloc_btree.h"
33 #include "xfs_ialloc_btree.h"
34 #include "xfs_dir2_sf.h"
35 #include "xfs_attr_sf.h"
36 #include "xfs_dinode.h"
37 #include "xfs_inode.h"
38 #include "xfs_btree.h"
39 #include "xfs_ialloc.h"
40 #include "xfs_itable.h"
41 #include "xfs_rtalloc.h"
42 #include "xfs_error.h"
46 #include "xfs_buf_item.h"
47 #include "xfs_trans_space.h"
48 #include "xfs_utils.h"
50 #include "xfs_trace.h"
53 * The global quota manager. There is only one of these for the entire
54 * system, _not_ one per file system. XQM keeps track of the overall
55 * quota functionality, including maintaining the freelist and hash
58 struct mutex xfs_Gqm_lock
;
59 struct xfs_qm
*xfs_Gqm
;
62 kmem_zone_t
*qm_dqzone
;
63 kmem_zone_t
*qm_dqtrxzone
;
65 static cred_t xfs_zerocr
;
67 STATIC
void xfs_qm_list_init(xfs_dqlist_t
*, char *, int);
68 STATIC
void xfs_qm_list_destroy(xfs_dqlist_t
*);
70 STATIC
int xfs_qm_init_quotainos(xfs_mount_t
*);
71 STATIC
int xfs_qm_init_quotainfo(xfs_mount_t
*);
72 STATIC
int xfs_qm_shake(int, gfp_t
);
74 static struct shrinker xfs_qm_shaker
= {
75 .shrink
= xfs_qm_shake
,
76 .seeks
= DEFAULT_SEEKS
,
80 extern struct mutex qcheck_lock
;
85 xfs_qm_dquot_list_print(
91 list_for_each_entry(dqp
, &mp
->m_quotainfo
->qi_dqlist_lock
, qi_mplist
) {
92 cmn_err(CE_DEBUG
, " %d. \"%d (%s)\" "
93 "bcnt = %lld, icnt = %lld, refs = %d",
94 i
++, be32_to_cpu(dqp
->q_core
.d_id
),
95 DQFLAGTO_TYPESTR(dqp
),
96 (long long)be64_to_cpu(dqp
->q_core
.d_bcount
),
97 (long long)be64_to_cpu(dqp
->q_core
.d_icount
),
102 static void xfs_qm_dquot_list_print(struct xfs_mount
*mp
) { }
106 * Initialize the XQM structure.
107 * Note that there is not one quota manager per file system.
109 STATIC
struct xfs_qm
*
112 xfs_dqhash_t
*udqhash
, *gdqhash
;
118 * Initialize the dquot hash tables.
120 udqhash
= kmem_zalloc_greedy(&hsize
,
121 XFS_QM_HASHSIZE_LOW
* sizeof(xfs_dqhash_t
),
122 XFS_QM_HASHSIZE_HIGH
* sizeof(xfs_dqhash_t
));
126 gdqhash
= kmem_zalloc_large(hsize
);
128 goto out_free_udqhash
;
130 hsize
/= sizeof(xfs_dqhash_t
);
133 xqm
= kmem_zalloc(sizeof(xfs_qm_t
), KM_SLEEP
);
134 xqm
->qm_dqhashmask
= hsize
- 1;
135 xqm
->qm_usr_dqhtable
= udqhash
;
136 xqm
->qm_grp_dqhtable
= gdqhash
;
137 ASSERT(xqm
->qm_usr_dqhtable
!= NULL
);
138 ASSERT(xqm
->qm_grp_dqhtable
!= NULL
);
140 for (i
= 0; i
< hsize
; i
++) {
141 xfs_qm_list_init(&(xqm
->qm_usr_dqhtable
[i
]), "uxdqh", i
);
142 xfs_qm_list_init(&(xqm
->qm_grp_dqhtable
[i
]), "gxdqh", i
);
146 * Freelist of all dquots of all file systems
148 INIT_LIST_HEAD(&xqm
->qm_dqfrlist
);
149 xqm
->qm_dqfrlist_cnt
= 0;
150 mutex_init(&xqm
->qm_dqfrlist_lock
);
153 * dquot zone. we register our own low-memory callback.
156 xqm
->qm_dqzone
= kmem_zone_init(sizeof(xfs_dquot_t
),
158 qm_dqzone
= xqm
->qm_dqzone
;
160 xqm
->qm_dqzone
= qm_dqzone
;
162 register_shrinker(&xfs_qm_shaker
);
165 * The t_dqinfo portion of transactions.
168 xqm
->qm_dqtrxzone
= kmem_zone_init(sizeof(xfs_dquot_acct_t
),
170 qm_dqtrxzone
= xqm
->qm_dqtrxzone
;
172 xqm
->qm_dqtrxzone
= qm_dqtrxzone
;
174 atomic_set(&xqm
->qm_totaldquots
, 0);
175 xqm
->qm_dqfree_ratio
= XFS_QM_DQFREE_RATIO
;
178 mutex_init(&qcheck_lock
);
183 kmem_free_large(udqhash
);
189 * Destroy the global quota manager when its reference count goes to zero.
195 struct xfs_dquot
*dqp
, *n
;
199 ASSERT(xqm
->qm_nrefs
== 0);
200 unregister_shrinker(&xfs_qm_shaker
);
201 hsize
= xqm
->qm_dqhashmask
+ 1;
202 for (i
= 0; i
< hsize
; i
++) {
203 xfs_qm_list_destroy(&(xqm
->qm_usr_dqhtable
[i
]));
204 xfs_qm_list_destroy(&(xqm
->qm_grp_dqhtable
[i
]));
206 kmem_free_large(xqm
->qm_usr_dqhtable
);
207 kmem_free_large(xqm
->qm_grp_dqhtable
);
208 xqm
->qm_usr_dqhtable
= NULL
;
209 xqm
->qm_grp_dqhtable
= NULL
;
210 xqm
->qm_dqhashmask
= 0;
213 mutex_lock(&xqm
->qm_dqfrlist_lock
);
214 list_for_each_entry_safe(dqp
, n
, &xqm
->qm_dqfrlist
, q_freelist
) {
217 cmn_err(CE_DEBUG
, "FREELIST destroy 0x%p", dqp
);
219 list_del_init(&dqp
->q_freelist
);
220 xfs_Gqm
->qm_dqfrlist_cnt
--;
222 xfs_qm_dqdestroy(dqp
);
224 mutex_unlock(&xqm
->qm_dqfrlist_lock
);
225 mutex_destroy(&xqm
->qm_dqfrlist_lock
);
227 mutex_destroy(&qcheck_lock
);
233 * Called at mount time to let XQM know that another file system is
234 * starting quotas. This isn't crucial information as the individual mount
235 * structures are pretty independent, but it helps the XQM keep a
236 * global view of what's going on.
240 xfs_qm_hold_quotafs_ref(
241 struct xfs_mount
*mp
)
244 * Need to lock the xfs_Gqm structure for things like this. For example,
245 * the structure could disappear between the entry to this routine and
246 * a HOLD operation if not locked.
248 mutex_lock(&xfs_Gqm_lock
);
251 xfs_Gqm
= xfs_Gqm_init();
257 * We can keep a list of all filesystems with quotas mounted for
258 * debugging and statistical purposes, but ...
259 * Just take a reference and get out.
262 mutex_unlock(&xfs_Gqm_lock
);
269 * Release the reference that a filesystem took at mount time,
270 * so that we know when we need to destroy the entire quota manager.
274 xfs_qm_rele_quotafs_ref(
275 struct xfs_mount
*mp
)
277 xfs_dquot_t
*dqp
, *n
;
280 ASSERT(xfs_Gqm
->qm_nrefs
> 0);
283 * Go thru the freelist and destroy all inactive dquots.
285 mutex_lock(&xfs_Gqm
->qm_dqfrlist_lock
);
287 list_for_each_entry_safe(dqp
, n
, &xfs_Gqm
->qm_dqfrlist
, q_freelist
) {
289 if (dqp
->dq_flags
& XFS_DQ_INACTIVE
) {
290 ASSERT(dqp
->q_mount
== NULL
);
291 ASSERT(! XFS_DQ_IS_DIRTY(dqp
));
292 ASSERT(list_empty(&dqp
->q_hashlist
));
293 ASSERT(list_empty(&dqp
->q_mplist
));
294 list_del_init(&dqp
->q_freelist
);
295 xfs_Gqm
->qm_dqfrlist_cnt
--;
297 xfs_qm_dqdestroy(dqp
);
302 mutex_unlock(&xfs_Gqm
->qm_dqfrlist_lock
);
305 * Destroy the entire XQM. If somebody mounts with quotaon, this'll
308 mutex_lock(&xfs_Gqm_lock
);
309 if (--xfs_Gqm
->qm_nrefs
== 0) {
310 xfs_qm_destroy(xfs_Gqm
);
313 mutex_unlock(&xfs_Gqm_lock
);
317 * Just destroy the quotainfo structure.
321 struct xfs_mount
*mp
)
323 if (mp
->m_quotainfo
) {
324 xfs_qm_dqpurge_all(mp
, XFS_QMOPT_QUOTALL
| XFS_QMOPT_UMOUNTING
);
325 xfs_qm_destroy_quotainfo(mp
);
331 * This is called from xfs_mountfs to start quotas and initialize all
332 * necessary data structures like quotainfo. This is also responsible for
333 * running a quotacheck as necessary. We are guaranteed that the superblock
334 * is consistently read in at this point.
336 * If we fail here, the mount will continue with quota turned off. We don't
337 * need to inidicate success or failure at all.
347 * If quotas on realtime volumes is not supported, we disable
348 * quotas immediately.
350 if (mp
->m_sb
.sb_rextents
) {
352 "Cannot turn on quotas for realtime filesystem %s",
358 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
361 * Allocate the quotainfo structure inside the mount struct, and
362 * create quotainode(s), and change/rev superblock if necessary.
364 error
= xfs_qm_init_quotainfo(mp
);
367 * We must turn off quotas.
369 ASSERT(mp
->m_quotainfo
== NULL
);
374 * If any of the quotas are not consistent, do a quotacheck.
376 if (XFS_QM_NEED_QUOTACHECK(mp
)) {
377 error
= xfs_qm_quotacheck(mp
);
379 /* Quotacheck failed and disabled quotas. */
384 * If one type of quotas is off, then it will lose its
385 * quotachecked status, since we won't be doing accounting for
388 if (!XFS_IS_UQUOTA_ON(mp
))
389 mp
->m_qflags
&= ~XFS_UQUOTA_CHKD
;
390 if (!(XFS_IS_GQUOTA_ON(mp
) || XFS_IS_PQUOTA_ON(mp
)))
391 mp
->m_qflags
&= ~XFS_OQUOTA_CHKD
;
395 * We actually don't have to acquire the m_sb_lock at all.
396 * This can only be called from mount, and that's single threaded. XXX
398 spin_lock(&mp
->m_sb_lock
);
399 sbf
= mp
->m_sb
.sb_qflags
;
400 mp
->m_sb
.sb_qflags
= mp
->m_qflags
& XFS_MOUNT_QUOTA_ALL
;
401 spin_unlock(&mp
->m_sb_lock
);
403 if (sbf
!= (mp
->m_qflags
& XFS_MOUNT_QUOTA_ALL
)) {
404 if (xfs_qm_write_sb_changes(mp
, XFS_SB_QFLAGS
)) {
406 * We could only have been turning quotas off.
407 * We aren't in very good shape actually because
408 * the incore structures are convinced that quotas are
409 * off, but the on disk superblock doesn't know that !
411 ASSERT(!(XFS_IS_QUOTA_RUNNING(mp
)));
412 xfs_fs_cmn_err(CE_ALERT
, mp
,
413 "XFS mount_quotas: Superblock update failed!");
418 xfs_fs_cmn_err(CE_WARN
, mp
,
419 "Failed to initialize disk quotas.");
424 if (XFS_IS_QUOTA_ON(mp
))
425 xfs_qm_internalqcheck(mp
);
430 * Called from the vfsops layer.
433 xfs_qm_unmount_quotas(
437 * Release the dquots that root inode, et al might be holding,
438 * before we flush quotas and blow away the quotainfo structure.
440 ASSERT(mp
->m_rootip
);
441 xfs_qm_dqdetach(mp
->m_rootip
);
443 xfs_qm_dqdetach(mp
->m_rbmip
);
445 xfs_qm_dqdetach(mp
->m_rsumip
);
448 * Release the quota inodes.
450 if (mp
->m_quotainfo
) {
451 if (mp
->m_quotainfo
->qi_uquotaip
) {
452 IRELE(mp
->m_quotainfo
->qi_uquotaip
);
453 mp
->m_quotainfo
->qi_uquotaip
= NULL
;
455 if (mp
->m_quotainfo
->qi_gquotaip
) {
456 IRELE(mp
->m_quotainfo
->qi_gquotaip
);
457 mp
->m_quotainfo
->qi_gquotaip
= NULL
;
463 * Flush all dquots of the given file system to disk. The dquots are
464 * _not_ purged from memory here, just their data written to disk.
468 struct xfs_mount
*mp
,
471 struct xfs_quotainfo
*q
= mp
->m_quotainfo
;
473 struct xfs_dquot
*dqp
;
481 mutex_lock(&q
->qi_dqlist_lock
);
482 list_for_each_entry(dqp
, &q
->qi_dqlist
, q_mplist
) {
484 if (! XFS_DQ_IS_DIRTY(dqp
)) {
489 /* XXX a sentinel would be better */
490 recl
= q
->qi_dqreclaims
;
491 if (!xfs_dqflock_nowait(dqp
)) {
493 * If we can't grab the flush lock then check
494 * to see if the dquot has been flushed delayed
495 * write. If so, grab its buffer and send it
496 * out immediately. We'll be able to acquire
497 * the flush lock when the I/O completes.
499 xfs_qm_dqflock_pushbuf_wait(dqp
);
502 * Let go of the mplist lock. We don't want to hold it
503 * across a disk write.
505 mutex_unlock(&q
->qi_dqlist_lock
);
506 error
= xfs_qm_dqflush(dqp
, sync_mode
);
511 mutex_lock(&q
->qi_dqlist_lock
);
512 if (recl
!= q
->qi_dqreclaims
) {
513 mutex_unlock(&q
->qi_dqlist_lock
);
514 /* XXX restart limit */
519 mutex_unlock(&q
->qi_dqlist_lock
);
524 * Release the group dquot pointers the user dquots may be
525 * carrying around as a hint. mplist is locked on entry and exit.
528 xfs_qm_detach_gdquots(
529 struct xfs_mount
*mp
)
531 struct xfs_quotainfo
*q
= mp
->m_quotainfo
;
532 struct xfs_dquot
*dqp
, *gdqp
;
536 ASSERT(mutex_is_locked(&q
->qi_dqlist_lock
));
537 list_for_each_entry(dqp
, &q
->qi_dqlist
, q_mplist
) {
539 if ((gdqp
= dqp
->q_gdquot
)) {
541 dqp
->q_gdquot
= NULL
;
547 * Can't hold the mplist lock across a dqput.
548 * XXXmust convert to marker based iterations here.
550 nrecl
= q
->qi_dqreclaims
;
551 mutex_unlock(&q
->qi_dqlist_lock
);
554 mutex_lock(&q
->qi_dqlist_lock
);
555 if (nrecl
!= q
->qi_dqreclaims
)
562 * Go through all the incore dquots of this file system and take them
563 * off the mplist and hashlist, if the dquot type matches the dqtype
564 * parameter. This is used when turning off quota accounting for
565 * users and/or groups, as well as when the filesystem is unmounting.
569 struct xfs_mount
*mp
,
572 struct xfs_quotainfo
*q
= mp
->m_quotainfo
;
573 struct xfs_dquot
*dqp
, *n
;
581 dqtype
= (flags
& XFS_QMOPT_UQUOTA
) ? XFS_DQ_USER
: 0;
582 dqtype
|= (flags
& XFS_QMOPT_PQUOTA
) ? XFS_DQ_PROJ
: 0;
583 dqtype
|= (flags
& XFS_QMOPT_GQUOTA
) ? XFS_DQ_GROUP
: 0;
585 mutex_lock(&q
->qi_dqlist_lock
);
588 * In the first pass through all incore dquots of this filesystem,
589 * we release the group dquot pointers the user dquots may be
590 * carrying around as a hint. We need to do this irrespective of
591 * what's being turned off.
593 xfs_qm_detach_gdquots(mp
);
597 ASSERT(mutex_is_locked(&q
->qi_dqlist_lock
));
599 * Try to get rid of all of the unwanted dquots. The idea is to
600 * get them off mplist and hashlist, but leave them on freelist.
602 list_for_each_entry_safe(dqp
, n
, &q
->qi_dqlist
, q_mplist
) {
604 * It's OK to look at the type without taking dqlock here.
605 * We're holding the mplist lock here, and that's needed for
608 if ((dqp
->dq_flags
& dqtype
) == 0)
611 if (!mutex_trylock(&dqp
->q_hash
->qh_lock
)) {
612 nrecl
= q
->qi_dqreclaims
;
613 mutex_unlock(&q
->qi_dqlist_lock
);
614 mutex_lock(&dqp
->q_hash
->qh_lock
);
615 mutex_lock(&q
->qi_dqlist_lock
);
618 * XXXTheoretically, we can get into a very long
619 * ping pong game here.
620 * No one can be adding dquots to the mplist at
621 * this point, but somebody might be taking things off.
623 if (nrecl
!= q
->qi_dqreclaims
) {
624 mutex_unlock(&dqp
->q_hash
->qh_lock
);
630 * Take the dquot off the mplist and hashlist. It may remain on
631 * freelist in INACTIVE state.
633 nmisses
+= xfs_qm_dqpurge(dqp
);
635 mutex_unlock(&q
->qi_dqlist_lock
);
647 * Purge the dquot cache.
648 * None of the dquots should really be busy at this point.
650 if (mp
->m_quotainfo
) {
651 while ((ndquots
= xfs_qm_dqpurge_int(mp
, flags
))) {
664 xfs_dquot_t
*udqhint
, /* hint */
665 xfs_dquot_t
**IO_idqpp
)
670 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
674 * See if we already have it in the inode itself. IO_idqpp is
675 * &i_udquot or &i_gdquot. This made the code look weird, but
676 * made the logic a lot simpler.
680 trace_xfs_dqattach_found(dqp
);
685 * udqhint is the i_udquot field in inode, and is non-NULL only
686 * when the type arg is group/project. Its purpose is to save a
687 * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside
691 ASSERT(type
== XFS_DQ_GROUP
|| type
== XFS_DQ_PROJ
);
695 * No need to take dqlock to look at the id.
697 * The ID can't change until it gets reclaimed, and it won't
698 * be reclaimed as long as we have a ref from inode and we
701 dqp
= udqhint
->q_gdquot
;
702 if (dqp
&& be32_to_cpu(dqp
->q_core
.d_id
) == id
) {
705 ASSERT(*IO_idqpp
== NULL
);
709 xfs_dqunlock(udqhint
);
714 * We can't hold a dquot lock when we call the dqget code.
715 * We'll deadlock in no time, because of (not conforming to)
716 * lock ordering - the inodelock comes before any dquot lock,
717 * and we may drop and reacquire the ilock in xfs_qm_dqget().
719 xfs_dqunlock(udqhint
);
723 * Find the dquot from somewhere. This bumps the
724 * reference count of dquot and returns it locked.
725 * This can return ENOENT if dquot didn't exist on
726 * disk and we didn't ask it to allocate;
727 * ESRCH if quotas got turned off suddenly.
729 error
= xfs_qm_dqget(ip
->i_mount
, ip
, id
, type
, XFS_QMOPT_DOWARN
, &dqp
);
733 trace_xfs_dqattach_get(dqp
);
736 * dqget may have dropped and re-acquired the ilock, but it guarantees
737 * that the dquot returned is the one that should go in the inode.
746 * Given a udquot and gdquot, attach a ptr to the group dquot in the
747 * udquot as a hint for future lookups. The idea sounds simple, but the
748 * execution isn't, because the udquot might have a group dquot attached
749 * already and getting rid of that gets us into lock ordering constraints.
750 * The process is complicated more by the fact that the dquots may or may not
751 * be locked on entry.
754 xfs_qm_dqattach_grouphint(
762 if ((tmp
= udq
->q_gdquot
)) {
768 udq
->q_gdquot
= NULL
;
770 * We can't keep any dqlocks when calling dqrele,
771 * because the freelist lock comes before dqlocks.
775 * we took a hard reference once upon a time in dqget,
776 * so give it back when the udquot no longer points at it
777 * dqput() does the unlocking of the dquot.
785 ASSERT(XFS_DQ_IS_LOCKED(udq
));
789 ASSERT(XFS_DQ_IS_LOCKED(udq
));
790 ASSERT(XFS_DQ_IS_LOCKED(gdq
));
792 * Somebody could have attached a gdquot here,
793 * when we dropped the uqlock. If so, just do nothing.
795 if (udq
->q_gdquot
== NULL
) {
806 * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON
808 * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed.
809 * Inode may get unlocked and relocked in here, and the caller must deal with
813 xfs_qm_dqattach_locked(
817 xfs_mount_t
*mp
= ip
->i_mount
;
821 if (!XFS_IS_QUOTA_RUNNING(mp
) ||
822 !XFS_IS_QUOTA_ON(mp
) ||
823 !XFS_NOT_DQATTACHED(mp
, ip
) ||
824 ip
->i_ino
== mp
->m_sb
.sb_uquotino
||
825 ip
->i_ino
== mp
->m_sb
.sb_gquotino
)
828 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
830 if (XFS_IS_UQUOTA_ON(mp
)) {
831 error
= xfs_qm_dqattach_one(ip
, ip
->i_d
.di_uid
, XFS_DQ_USER
,
832 flags
& XFS_QMOPT_DQALLOC
,
833 NULL
, &ip
->i_udquot
);
839 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
840 if (XFS_IS_OQUOTA_ON(mp
)) {
841 error
= XFS_IS_GQUOTA_ON(mp
) ?
842 xfs_qm_dqattach_one(ip
, ip
->i_d
.di_gid
, XFS_DQ_GROUP
,
843 flags
& XFS_QMOPT_DQALLOC
,
844 ip
->i_udquot
, &ip
->i_gdquot
) :
845 xfs_qm_dqattach_one(ip
, ip
->i_d
.di_projid
, XFS_DQ_PROJ
,
846 flags
& XFS_QMOPT_DQALLOC
,
847 ip
->i_udquot
, &ip
->i_gdquot
);
849 * Don't worry about the udquot that we may have
850 * attached above. It'll get detached, if not already.
858 * Attach this group quota to the user quota as a hint.
859 * This WON'T, in general, result in a thrash.
862 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
863 ASSERT(ip
->i_udquot
);
864 ASSERT(ip
->i_gdquot
);
867 * We may or may not have the i_udquot locked at this point,
868 * but this check is OK since we don't depend on the i_gdquot to
869 * be accurate 100% all the time. It is just a hint, and this
870 * will succeed in general.
872 if (ip
->i_udquot
->q_gdquot
== ip
->i_gdquot
)
875 * Attach i_gdquot to the gdquot hint inside the i_udquot.
877 xfs_qm_dqattach_grouphint(ip
->i_udquot
, ip
->i_gdquot
);
883 if (XFS_IS_UQUOTA_ON(mp
))
884 ASSERT(ip
->i_udquot
);
885 if (XFS_IS_OQUOTA_ON(mp
))
886 ASSERT(ip
->i_gdquot
);
888 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
895 struct xfs_inode
*ip
,
900 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
901 error
= xfs_qm_dqattach_locked(ip
, flags
);
902 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
908 * Release dquots (and their references) if any.
909 * The inode should be locked EXCL except when this's called by
916 if (!(ip
->i_udquot
|| ip
->i_gdquot
))
919 trace_xfs_dquot_dqdetach(ip
);
921 ASSERT(ip
->i_ino
!= ip
->i_mount
->m_sb
.sb_uquotino
);
922 ASSERT(ip
->i_ino
!= ip
->i_mount
->m_sb
.sb_gquotino
);
924 xfs_qm_dqrele(ip
->i_udquot
);
928 xfs_qm_dqrele(ip
->i_gdquot
);
935 struct xfs_mount
*mp
,
938 struct xfs_quotainfo
*q
= mp
->m_quotainfo
;
940 struct xfs_dquot
*dqp
;
943 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
949 mutex_lock(&q
->qi_dqlist_lock
);
951 * dqpurge_all() also takes the mplist lock and iterate thru all dquots
952 * in quotaoff. However, if the QUOTA_ACTIVE bits are not cleared
953 * when we have the mplist lock, we know that dquots will be consistent
954 * as long as we have it locked.
956 if (!XFS_IS_QUOTA_ON(mp
)) {
957 mutex_unlock(&q
->qi_dqlist_lock
);
960 ASSERT(mutex_is_locked(&q
->qi_dqlist_lock
));
961 list_for_each_entry(dqp
, &q
->qi_dqlist
, q_mplist
) {
963 * If this is vfs_sync calling, then skip the dquots that
964 * don't 'seem' to be dirty. ie. don't acquire dqlock.
965 * This is very similar to what xfs_sync does with inodes.
967 if (flags
& SYNC_TRYLOCK
) {
968 if (!XFS_DQ_IS_DIRTY(dqp
))
970 if (!xfs_qm_dqlock_nowait(dqp
))
977 * Now, find out for sure if this dquot is dirty or not.
979 if (! XFS_DQ_IS_DIRTY(dqp
)) {
984 /* XXX a sentinel would be better */
985 recl
= q
->qi_dqreclaims
;
986 if (!xfs_dqflock_nowait(dqp
)) {
987 if (flags
& SYNC_TRYLOCK
) {
992 * If we can't grab the flush lock then if the caller
993 * really wanted us to give this our best shot, so
994 * see if we can give a push to the buffer before we wait
995 * on the flush lock. At this point, we know that
996 * even though the dquot is being flushed,
997 * it has (new) dirty data.
999 xfs_qm_dqflock_pushbuf_wait(dqp
);
1002 * Let go of the mplist lock. We don't want to hold it
1003 * across a disk write
1005 mutex_unlock(&q
->qi_dqlist_lock
);
1006 error
= xfs_qm_dqflush(dqp
, flags
);
1008 if (error
&& XFS_FORCED_SHUTDOWN(mp
))
1009 return 0; /* Need to prevent umount failure */
1013 mutex_lock(&q
->qi_dqlist_lock
);
1014 if (recl
!= q
->qi_dqreclaims
) {
1015 if (++restarts
>= XFS_QM_SYNC_MAX_RESTARTS
)
1018 mutex_unlock(&q
->qi_dqlist_lock
);
1023 mutex_unlock(&q
->qi_dqlist_lock
);
1028 * The hash chains and the mplist use the same xfs_dqhash structure as
1029 * their list head, but we can take the mplist qh_lock and one of the
1030 * hash qh_locks at the same time without any problem as they aren't
1033 static struct lock_class_key xfs_quota_mplist_class
;
1036 * This initializes all the quota information that's kept in the
1040 xfs_qm_init_quotainfo(
1043 xfs_quotainfo_t
*qinf
;
1047 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1050 * Tell XQM that we exist as soon as possible.
1052 if ((error
= xfs_qm_hold_quotafs_ref(mp
))) {
1056 qinf
= mp
->m_quotainfo
= kmem_zalloc(sizeof(xfs_quotainfo_t
), KM_SLEEP
);
1059 * See if quotainodes are setup, and if not, allocate them,
1060 * and change the superblock accordingly.
1062 if ((error
= xfs_qm_init_quotainos(mp
))) {
1064 mp
->m_quotainfo
= NULL
;
1068 INIT_LIST_HEAD(&qinf
->qi_dqlist
);
1069 mutex_init(&qinf
->qi_dqlist_lock
);
1070 lockdep_set_class(&qinf
->qi_dqlist_lock
, &xfs_quota_mplist_class
);
1072 qinf
->qi_dqreclaims
= 0;
1074 /* mutex used to serialize quotaoffs */
1075 mutex_init(&qinf
->qi_quotaofflock
);
1077 /* Precalc some constants */
1078 qinf
->qi_dqchunklen
= XFS_FSB_TO_BB(mp
, XFS_DQUOT_CLUSTER_SIZE_FSB
);
1079 ASSERT(qinf
->qi_dqchunklen
);
1080 qinf
->qi_dqperchunk
= BBTOB(qinf
->qi_dqchunklen
);
1081 do_div(qinf
->qi_dqperchunk
, sizeof(xfs_dqblk_t
));
1083 mp
->m_qflags
|= (mp
->m_sb
.sb_qflags
& XFS_ALL_QUOTA_CHKD
);
1086 * We try to get the limits from the superuser's limits fields.
1087 * This is quite hacky, but it is standard quota practice.
1088 * We look at the USR dquot with id == 0 first, but if user quotas
1089 * are not enabled we goto the GRP dquot with id == 0.
1090 * We don't really care to keep separate default limits for user
1091 * and group quotas, at least not at this point.
1093 error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
)0,
1094 XFS_IS_UQUOTA_RUNNING(mp
) ? XFS_DQ_USER
:
1095 (XFS_IS_GQUOTA_RUNNING(mp
) ? XFS_DQ_GROUP
:
1097 XFS_QMOPT_DQSUSER
|XFS_QMOPT_DOWARN
,
1100 xfs_disk_dquot_t
*ddqp
= &dqp
->q_core
;
1103 * The warnings and timers set the grace period given to
1104 * a user or group before he or she can not perform any
1105 * more writing. If it is zero, a default is used.
1107 qinf
->qi_btimelimit
= ddqp
->d_btimer
?
1108 be32_to_cpu(ddqp
->d_btimer
) : XFS_QM_BTIMELIMIT
;
1109 qinf
->qi_itimelimit
= ddqp
->d_itimer
?
1110 be32_to_cpu(ddqp
->d_itimer
) : XFS_QM_ITIMELIMIT
;
1111 qinf
->qi_rtbtimelimit
= ddqp
->d_rtbtimer
?
1112 be32_to_cpu(ddqp
->d_rtbtimer
) : XFS_QM_RTBTIMELIMIT
;
1113 qinf
->qi_bwarnlimit
= ddqp
->d_bwarns
?
1114 be16_to_cpu(ddqp
->d_bwarns
) : XFS_QM_BWARNLIMIT
;
1115 qinf
->qi_iwarnlimit
= ddqp
->d_iwarns
?
1116 be16_to_cpu(ddqp
->d_iwarns
) : XFS_QM_IWARNLIMIT
;
1117 qinf
->qi_rtbwarnlimit
= ddqp
->d_rtbwarns
?
1118 be16_to_cpu(ddqp
->d_rtbwarns
) : XFS_QM_RTBWARNLIMIT
;
1119 qinf
->qi_bhardlimit
= be64_to_cpu(ddqp
->d_blk_hardlimit
);
1120 qinf
->qi_bsoftlimit
= be64_to_cpu(ddqp
->d_blk_softlimit
);
1121 qinf
->qi_ihardlimit
= be64_to_cpu(ddqp
->d_ino_hardlimit
);
1122 qinf
->qi_isoftlimit
= be64_to_cpu(ddqp
->d_ino_softlimit
);
1123 qinf
->qi_rtbhardlimit
= be64_to_cpu(ddqp
->d_rtb_hardlimit
);
1124 qinf
->qi_rtbsoftlimit
= be64_to_cpu(ddqp
->d_rtb_softlimit
);
1127 * We sent the XFS_QMOPT_DQSUSER flag to dqget because
1128 * we don't want this dquot cached. We haven't done a
1129 * quotacheck yet, and quotacheck doesn't like incore dquots.
1131 xfs_qm_dqdestroy(dqp
);
1133 qinf
->qi_btimelimit
= XFS_QM_BTIMELIMIT
;
1134 qinf
->qi_itimelimit
= XFS_QM_ITIMELIMIT
;
1135 qinf
->qi_rtbtimelimit
= XFS_QM_RTBTIMELIMIT
;
1136 qinf
->qi_bwarnlimit
= XFS_QM_BWARNLIMIT
;
1137 qinf
->qi_iwarnlimit
= XFS_QM_IWARNLIMIT
;
1138 qinf
->qi_rtbwarnlimit
= XFS_QM_RTBWARNLIMIT
;
1146 * Gets called when unmounting a filesystem or when all quotas get
1148 * This purges the quota inodes, destroys locks and frees itself.
1151 xfs_qm_destroy_quotainfo(
1154 xfs_quotainfo_t
*qi
;
1156 qi
= mp
->m_quotainfo
;
1158 ASSERT(xfs_Gqm
!= NULL
);
1161 * Release the reference that XQM kept, so that we know
1162 * when the XQM structure should be freed. We cannot assume
1163 * that xfs_Gqm is non-null after this point.
1165 xfs_qm_rele_quotafs_ref(mp
);
1167 ASSERT(list_empty(&qi
->qi_dqlist
));
1168 mutex_destroy(&qi
->qi_dqlist_lock
);
1170 if (qi
->qi_uquotaip
) {
1171 IRELE(qi
->qi_uquotaip
);
1172 qi
->qi_uquotaip
= NULL
; /* paranoia */
1174 if (qi
->qi_gquotaip
) {
1175 IRELE(qi
->qi_gquotaip
);
1176 qi
->qi_gquotaip
= NULL
;
1178 mutex_destroy(&qi
->qi_quotaofflock
);
1180 mp
->m_quotainfo
= NULL
;
1185 /* ------------------- PRIVATE STATIC FUNCTIONS ----------------------- */
1194 mutex_init(&list
->qh_lock
);
1195 INIT_LIST_HEAD(&list
->qh_list
);
1196 list
->qh_version
= 0;
1197 list
->qh_nelems
= 0;
1201 xfs_qm_list_destroy(
1204 mutex_destroy(&(list
->qh_lock
));
1209 * Stripped down version of dqattach. This doesn't attach, or even look at the
1210 * dquots attached to the inode. The rationale is that there won't be any
1211 * attached at the time this is called from quotacheck.
1214 xfs_qm_dqget_noattach(
1216 xfs_dquot_t
**O_udqpp
,
1217 xfs_dquot_t
**O_gdqpp
)
1221 xfs_dquot_t
*udqp
, *gdqp
;
1223 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
1228 if (XFS_IS_UQUOTA_ON(mp
)) {
1229 ASSERT(ip
->i_udquot
== NULL
);
1231 * We want the dquot allocated if it doesn't exist.
1233 if ((error
= xfs_qm_dqget(mp
, ip
, ip
->i_d
.di_uid
, XFS_DQ_USER
,
1234 XFS_QMOPT_DQALLOC
| XFS_QMOPT_DOWARN
,
1237 * Shouldn't be able to turn off quotas here.
1239 ASSERT(error
!= ESRCH
);
1240 ASSERT(error
!= ENOENT
);
1246 if (XFS_IS_OQUOTA_ON(mp
)) {
1247 ASSERT(ip
->i_gdquot
== NULL
);
1250 error
= XFS_IS_GQUOTA_ON(mp
) ?
1251 xfs_qm_dqget(mp
, ip
,
1252 ip
->i_d
.di_gid
, XFS_DQ_GROUP
,
1253 XFS_QMOPT_DQALLOC
|XFS_QMOPT_DOWARN
,
1255 xfs_qm_dqget(mp
, ip
,
1256 ip
->i_d
.di_projid
, XFS_DQ_PROJ
,
1257 XFS_QMOPT_DQALLOC
|XFS_QMOPT_DOWARN
,
1261 xfs_qm_dqrele(udqp
);
1262 ASSERT(error
!= ESRCH
);
1263 ASSERT(error
!= ENOENT
);
1268 /* Reacquire the locks in the right order */
1270 if (! xfs_qm_dqlock_nowait(udqp
)) {
1282 if (udqp
) ASSERT(XFS_DQ_IS_LOCKED(udqp
));
1283 if (gdqp
) ASSERT(XFS_DQ_IS_LOCKED(gdqp
));
1289 * Create an inode and return with a reference already taken, but unlocked
1290 * This is how we create quota inodes
1303 tp
= xfs_trans_alloc(mp
, XFS_TRANS_QM_QINOCREATE
);
1304 if ((error
= xfs_trans_reserve(tp
,
1305 XFS_QM_QINOCREATE_SPACE_RES(mp
),
1306 XFS_CREATE_LOG_RES(mp
), 0,
1307 XFS_TRANS_PERM_LOG_RES
,
1308 XFS_CREATE_LOG_COUNT
))) {
1309 xfs_trans_cancel(tp
, 0);
1313 if ((error
= xfs_dir_ialloc(&tp
, NULL
, S_IFREG
, 1, 0,
1314 &xfs_zerocr
, 0, 1, ip
, &committed
))) {
1315 xfs_trans_cancel(tp
, XFS_TRANS_RELEASE_LOG_RES
|
1321 * Keep an extra reference to this quota inode. This inode is
1322 * locked exclusively and joined to the transaction already.
1324 ASSERT(xfs_isilocked(*ip
, XFS_ILOCK_EXCL
));
1328 * Make the changes in the superblock, and log those too.
1329 * sbfields arg may contain fields other than *QUOTINO;
1330 * VERSIONNUM for example.
1332 spin_lock(&mp
->m_sb_lock
);
1333 if (flags
& XFS_QMOPT_SBVERSION
) {
1334 #if defined(DEBUG) && defined(XFS_LOUD_RECOVERY)
1335 unsigned oldv
= mp
->m_sb
.sb_versionnum
;
1337 ASSERT(!xfs_sb_version_hasquota(&mp
->m_sb
));
1338 ASSERT((sbfields
& (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
1339 XFS_SB_GQUOTINO
| XFS_SB_QFLAGS
)) ==
1340 (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
1341 XFS_SB_GQUOTINO
| XFS_SB_QFLAGS
));
1343 xfs_sb_version_addquota(&mp
->m_sb
);
1344 mp
->m_sb
.sb_uquotino
= NULLFSINO
;
1345 mp
->m_sb
.sb_gquotino
= NULLFSINO
;
1347 /* qflags will get updated _after_ quotacheck */
1348 mp
->m_sb
.sb_qflags
= 0;
1349 #if defined(DEBUG) && defined(XFS_LOUD_RECOVERY)
1351 "Old superblock version %x, converting to %x.",
1352 oldv
, mp
->m_sb
.sb_versionnum
);
1355 if (flags
& XFS_QMOPT_UQUOTA
)
1356 mp
->m_sb
.sb_uquotino
= (*ip
)->i_ino
;
1358 mp
->m_sb
.sb_gquotino
= (*ip
)->i_ino
;
1359 spin_unlock(&mp
->m_sb_lock
);
1360 xfs_mod_sb(tp
, sbfields
);
1362 if ((error
= xfs_trans_commit(tp
, XFS_TRANS_RELEASE_LOG_RES
))) {
1363 xfs_fs_cmn_err(CE_ALERT
, mp
, "XFS qino_alloc failed!");
1371 xfs_qm_reset_dqcounts(
1377 xfs_disk_dquot_t
*ddq
;
1380 trace_xfs_reset_dqcounts(bp
, _RET_IP_
);
1383 * Reset all counters and timers. They'll be
1384 * started afresh by xfs_qm_quotacheck.
1387 j
= XFS_FSB_TO_B(mp
, XFS_DQUOT_CLUSTER_SIZE_FSB
);
1388 do_div(j
, sizeof(xfs_dqblk_t
));
1389 ASSERT(mp
->m_quotainfo
->qi_dqperchunk
== j
);
1391 ddq
= (xfs_disk_dquot_t
*)XFS_BUF_PTR(bp
);
1392 for (j
= 0; j
< mp
->m_quotainfo
->qi_dqperchunk
; j
++) {
1394 * Do a sanity check, and if needed, repair the dqblk. Don't
1395 * output any warnings because it's perfectly possible to
1396 * find uninitialised dquot blks. See comment in xfs_qm_dqcheck.
1398 (void) xfs_qm_dqcheck(ddq
, id
+j
, type
, XFS_QMOPT_DQREPAIR
,
1402 ddq
->d_rtbcount
= 0;
1405 ddq
->d_rtbtimer
= 0;
1408 ddq
->d_rtbwarns
= 0;
1409 ddq
= (xfs_disk_dquot_t
*) ((xfs_dqblk_t
*)ddq
+ 1);
1418 xfs_filblks_t blkcnt
,
1429 incr
= (blkcnt
> XFS_QM_MAX_DQCLUSTER_LOGSZ
) ?
1430 XFS_QM_MAX_DQCLUSTER_LOGSZ
: blkcnt
;
1431 type
= flags
& XFS_QMOPT_UQUOTA
? XFS_DQ_USER
:
1432 (flags
& XFS_QMOPT_PQUOTA
? XFS_DQ_PROJ
: XFS_DQ_GROUP
);
1436 * Blkcnt arg can be a very big number, and might even be
1437 * larger than the log itself. So, we have to break it up into
1438 * manageable-sized transactions.
1439 * Note that we don't start a permanent transaction here; we might
1440 * not be able to get a log reservation for the whole thing up front,
1441 * and we don't really care to either, because we just discard
1442 * everything if we were to crash in the middle of this loop.
1445 error
= xfs_trans_read_buf(mp
, NULL
, mp
->m_ddev_targp
,
1446 XFS_FSB_TO_DADDR(mp
, bno
),
1447 mp
->m_quotainfo
->qi_dqchunklen
, 0, &bp
);
1451 xfs_qm_reset_dqcounts(mp
, bp
, firstid
, type
);
1452 xfs_bdwrite(mp
, bp
);
1454 * goto the next block.
1457 firstid
+= mp
->m_quotainfo
->qi_dqperchunk
;
1463 * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a
1464 * caller supplied function for every chunk of dquots that we find.
1472 xfs_bmbt_irec_t
*map
;
1473 int i
, nmaps
; /* number of map entries */
1474 int error
; /* return value */
1475 xfs_fileoff_t lblkno
;
1476 xfs_filblks_t maxlblkcnt
;
1478 xfs_fsblock_t rablkno
;
1479 xfs_filblks_t rablkcnt
;
1483 * This looks racy, but we can't keep an inode lock across a
1484 * trans_reserve. But, this gets called during quotacheck, and that
1485 * happens only at mount time which is single threaded.
1487 if (qip
->i_d
.di_nblocks
== 0)
1490 map
= kmem_alloc(XFS_DQITER_MAP_SIZE
* sizeof(*map
), KM_SLEEP
);
1493 maxlblkcnt
= XFS_B_TO_FSB(mp
, (xfs_ufsize_t
)XFS_MAXIOFFSET(mp
));
1495 nmaps
= XFS_DQITER_MAP_SIZE
;
1497 * We aren't changing the inode itself. Just changing
1498 * some of its data. No new blocks are added here, and
1499 * the inode is never added to the transaction.
1501 xfs_ilock(qip
, XFS_ILOCK_SHARED
);
1502 error
= xfs_bmapi(NULL
, qip
, lblkno
,
1503 maxlblkcnt
- lblkno
,
1506 0, map
, &nmaps
, NULL
, NULL
);
1507 xfs_iunlock(qip
, XFS_ILOCK_SHARED
);
1511 ASSERT(nmaps
<= XFS_DQITER_MAP_SIZE
);
1512 for (i
= 0; i
< nmaps
; i
++) {
1513 ASSERT(map
[i
].br_startblock
!= DELAYSTARTBLOCK
);
1514 ASSERT(map
[i
].br_blockcount
);
1517 lblkno
+= map
[i
].br_blockcount
;
1519 if (map
[i
].br_startblock
== HOLESTARTBLOCK
)
1522 firstid
= (xfs_dqid_t
) map
[i
].br_startoff
*
1523 mp
->m_quotainfo
->qi_dqperchunk
;
1525 * Do a read-ahead on the next extent.
1527 if ((i
+1 < nmaps
) &&
1528 (map
[i
+1].br_startblock
!= HOLESTARTBLOCK
)) {
1529 rablkcnt
= map
[i
+1].br_blockcount
;
1530 rablkno
= map
[i
+1].br_startblock
;
1531 while (rablkcnt
--) {
1532 xfs_baread(mp
->m_ddev_targp
,
1533 XFS_FSB_TO_DADDR(mp
, rablkno
),
1534 mp
->m_quotainfo
->qi_dqchunklen
);
1539 * Iterate thru all the blks in the extent and
1540 * reset the counters of all the dquots inside them.
1542 if ((error
= xfs_qm_dqiter_bufs(mp
,
1544 map
[i
].br_startblock
,
1545 map
[i
].br_blockcount
,
1553 } while (nmaps
> 0);
1561 * Called by dqusage_adjust in doing a quotacheck.
1562 * Given the inode, and a dquot (either USR or GRP, doesn't matter),
1563 * this updates its incore copy as well as the buffer copy. This is
1564 * so that once the quotacheck is done, we can just log all the buffers,
1565 * as opposed to logging numerous updates to individual dquots.
1568 xfs_qm_quotacheck_dqadjust(
1573 ASSERT(XFS_DQ_IS_LOCKED(dqp
));
1575 trace_xfs_dqadjust(dqp
);
1578 * Adjust the inode count and the block count to reflect this inode's
1581 be64_add_cpu(&dqp
->q_core
.d_icount
, 1);
1582 dqp
->q_res_icount
++;
1584 be64_add_cpu(&dqp
->q_core
.d_bcount
, nblks
);
1585 dqp
->q_res_bcount
+= nblks
;
1588 be64_add_cpu(&dqp
->q_core
.d_rtbcount
, rtblks
);
1589 dqp
->q_res_rtbcount
+= rtblks
;
1593 * Set default limits, adjust timers (since we changed usages)
1595 * There are no timers for the default values set in the root dquot.
1597 if (dqp
->q_core
.d_id
) {
1598 xfs_qm_adjust_dqlimits(dqp
->q_mount
, &dqp
->q_core
);
1599 xfs_qm_adjust_dqtimers(dqp
->q_mount
, &dqp
->q_core
);
1602 dqp
->dq_flags
|= XFS_DQ_DIRTY
;
1608 xfs_qcnt_t
*O_rtblks
)
1610 xfs_filblks_t rtblks
; /* total rt blks */
1611 xfs_extnum_t idx
; /* extent record index */
1612 xfs_ifork_t
*ifp
; /* inode fork pointer */
1613 xfs_extnum_t nextents
; /* number of extent entries */
1616 ASSERT(XFS_IS_REALTIME_INODE(ip
));
1617 ifp
= XFS_IFORK_PTR(ip
, XFS_DATA_FORK
);
1618 if (!(ifp
->if_flags
& XFS_IFEXTENTS
)) {
1619 if ((error
= xfs_iread_extents(NULL
, ip
, XFS_DATA_FORK
)))
1623 nextents
= ifp
->if_bytes
/ (uint
)sizeof(xfs_bmbt_rec_t
);
1624 for (idx
= 0; idx
< nextents
; idx
++)
1625 rtblks
+= xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp
, idx
));
1626 *O_rtblks
= (xfs_qcnt_t
)rtblks
;
1631 * callback routine supplied to bulkstat(). Given an inumber, find its
1632 * dquots and update them to account for resources taken by that inode.
1636 xfs_qm_dqusage_adjust(
1637 xfs_mount_t
*mp
, /* mount point for filesystem */
1638 xfs_ino_t ino
, /* inode number to get data for */
1639 void __user
*buffer
, /* not used */
1640 int ubsize
, /* not used */
1641 void *private_data
, /* not used */
1642 xfs_daddr_t bno
, /* starting block of inode cluster */
1643 int *ubused
, /* not used */
1644 void *dip
, /* on-disk inode pointer (not used) */
1645 int *res
) /* result code value */
1648 xfs_dquot_t
*udqp
, *gdqp
;
1649 xfs_qcnt_t nblks
, rtblks
;
1652 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1655 * rootino must have its resources accounted for, not so with the quota
1658 if (ino
== mp
->m_sb
.sb_uquotino
|| ino
== mp
->m_sb
.sb_gquotino
) {
1659 *res
= BULKSTAT_RV_NOTHING
;
1660 return XFS_ERROR(EINVAL
);
1664 * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget
1665 * interface expects the inode to be exclusively locked because that's
1666 * the case in all other instances. It's OK that we do this because
1667 * quotacheck is done only at mount time.
1669 if ((error
= xfs_iget(mp
, NULL
, ino
, 0, XFS_ILOCK_EXCL
, &ip
, bno
))) {
1670 *res
= BULKSTAT_RV_NOTHING
;
1675 * Obtain the locked dquots. In case of an error (eg. allocation
1676 * fails for ENOSPC), we return the negative of the error number
1677 * to bulkstat, so that it can get propagated to quotacheck() and
1678 * making us disable quotas for the file system.
1680 if ((error
= xfs_qm_dqget_noattach(ip
, &udqp
, &gdqp
))) {
1681 xfs_iput(ip
, XFS_ILOCK_EXCL
);
1682 *res
= BULKSTAT_RV_GIVEUP
;
1687 if (! XFS_IS_REALTIME_INODE(ip
)) {
1688 nblks
= (xfs_qcnt_t
)ip
->i_d
.di_nblocks
;
1691 * Walk thru the extent list and count the realtime blocks.
1693 if ((error
= xfs_qm_get_rtblks(ip
, &rtblks
))) {
1694 xfs_iput(ip
, XFS_ILOCK_EXCL
);
1699 *res
= BULKSTAT_RV_GIVEUP
;
1702 nblks
= (xfs_qcnt_t
)ip
->i_d
.di_nblocks
- rtblks
;
1704 ASSERT(ip
->i_delayed_blks
== 0);
1707 * We can't release the inode while holding its dquot locks.
1708 * The inode can go into inactive and might try to acquire the dquotlocks.
1709 * So, just unlock here and do a vn_rele at the end.
1711 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1714 * Add the (disk blocks and inode) resources occupied by this
1715 * inode to its dquots. We do this adjustment in the incore dquot,
1716 * and also copy the changes to its buffer.
1717 * We don't care about putting these changes in a transaction
1718 * envelope because if we crash in the middle of a 'quotacheck'
1719 * we have to start from the beginning anyway.
1720 * Once we're done, we'll log all the dquot bufs.
1722 * The *QUOTA_ON checks below may look pretty racy, but quotachecks
1723 * and quotaoffs don't race. (Quotachecks happen at mount time only).
1725 if (XFS_IS_UQUOTA_ON(mp
)) {
1727 xfs_qm_quotacheck_dqadjust(udqp
, nblks
, rtblks
);
1730 if (XFS_IS_OQUOTA_ON(mp
)) {
1732 xfs_qm_quotacheck_dqadjust(gdqp
, nblks
, rtblks
);
1736 * Now release the inode. This will send it to 'inactive', and
1737 * possibly even free blocks.
1744 *res
= BULKSTAT_RV_DIDONE
;
1749 * Walk thru all the filesystem inodes and construct a consistent view
1750 * of the disk quota world. If the quotacheck fails, disable quotas.
1756 int done
, count
, error
;
1759 xfs_inode_t
*uip
, *gip
;
1767 ASSERT(mp
->m_quotainfo
->qi_uquotaip
|| mp
->m_quotainfo
->qi_gquotaip
);
1768 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1771 * There should be no cached dquots. The (simplistic) quotacheck
1772 * algorithm doesn't like that.
1774 ASSERT(list_empty(&mp
->m_quotainfo
->qi_dqlist
));
1776 cmn_err(CE_NOTE
, "XFS quotacheck %s: Please wait.", mp
->m_fsname
);
1779 * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset
1780 * their counters to zero. We need a clean slate.
1781 * We don't log our changes till later.
1783 uip
= mp
->m_quotainfo
->qi_uquotaip
;
1785 error
= xfs_qm_dqiterate(mp
, uip
, XFS_QMOPT_UQUOTA
);
1788 flags
|= XFS_UQUOTA_CHKD
;
1791 gip
= mp
->m_quotainfo
->qi_gquotaip
;
1793 error
= xfs_qm_dqiterate(mp
, gip
, XFS_IS_GQUOTA_ON(mp
) ?
1794 XFS_QMOPT_GQUOTA
: XFS_QMOPT_PQUOTA
);
1797 flags
|= XFS_OQUOTA_CHKD
;
1802 * Iterate thru all the inodes in the file system,
1803 * adjusting the corresponding dquot counters in core.
1805 if ((error
= xfs_bulkstat(mp
, &lastino
, &count
,
1806 xfs_qm_dqusage_adjust
, NULL
,
1807 structsz
, NULL
, BULKSTAT_FG_IGET
, &done
)))
1813 * We've made all the changes that we need to make incore.
1814 * Flush them down to disk buffers if everything was updated
1818 error
= xfs_qm_dqflush_all(mp
, 0);
1821 * We can get this error if we couldn't do a dquot allocation inside
1822 * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the
1823 * dirty dquots that might be cached, we just want to get rid of them
1824 * and turn quotaoff. The dquots won't be attached to any of the inodes
1825 * at this point (because we intentionally didn't in dqget_noattach).
1828 xfs_qm_dqpurge_all(mp
, XFS_QMOPT_QUOTALL
| XFS_QMOPT_QUOTAOFF
);
1833 * We didn't log anything, because if we crashed, we'll have to
1834 * start the quotacheck from scratch anyway. However, we must make
1835 * sure that our dquot changes are secure before we put the
1836 * quotacheck'd stamp on the superblock. So, here we do a synchronous
1839 XFS_bflush(mp
->m_ddev_targp
);
1842 * If one type of quotas is off, then it will lose its
1843 * quotachecked status, since we won't be doing accounting for
1844 * that type anymore.
1846 mp
->m_qflags
&= ~(XFS_OQUOTA_CHKD
| XFS_UQUOTA_CHKD
);
1847 mp
->m_qflags
|= flags
;
1849 xfs_qm_dquot_list_print(mp
);
1853 cmn_err(CE_WARN
, "XFS quotacheck %s: Unsuccessful (Error %d): "
1854 "Disabling quotas.",
1855 mp
->m_fsname
, error
);
1857 * We must turn off quotas.
1859 ASSERT(mp
->m_quotainfo
!= NULL
);
1860 ASSERT(xfs_Gqm
!= NULL
);
1861 xfs_qm_destroy_quotainfo(mp
);
1862 if (xfs_mount_reset_sbqflags(mp
)) {
1863 cmn_err(CE_WARN
, "XFS quotacheck %s: "
1864 "Failed to reset quota flags.", mp
->m_fsname
);
1867 cmn_err(CE_NOTE
, "XFS quotacheck %s: Done.", mp
->m_fsname
);
1873 * This is called after the superblock has been read in and we're ready to
1874 * iget the quota inodes.
1877 xfs_qm_init_quotainos(
1880 xfs_inode_t
*uip
, *gip
;
1885 ASSERT(mp
->m_quotainfo
);
1891 * Get the uquota and gquota inodes
1893 if (xfs_sb_version_hasquota(&mp
->m_sb
)) {
1894 if (XFS_IS_UQUOTA_ON(mp
) &&
1895 mp
->m_sb
.sb_uquotino
!= NULLFSINO
) {
1896 ASSERT(mp
->m_sb
.sb_uquotino
> 0);
1897 if ((error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_uquotino
,
1899 return XFS_ERROR(error
);
1901 if (XFS_IS_OQUOTA_ON(mp
) &&
1902 mp
->m_sb
.sb_gquotino
!= NULLFSINO
) {
1903 ASSERT(mp
->m_sb
.sb_gquotino
> 0);
1904 if ((error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_gquotino
,
1908 return XFS_ERROR(error
);
1912 flags
|= XFS_QMOPT_SBVERSION
;
1913 sbflags
|= (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
1914 XFS_SB_GQUOTINO
| XFS_SB_QFLAGS
);
1918 * Create the two inodes, if they don't exist already. The changes
1919 * made above will get added to a transaction and logged in one of
1920 * the qino_alloc calls below. If the device is readonly,
1921 * temporarily switch to read-write to do this.
1923 if (XFS_IS_UQUOTA_ON(mp
) && uip
== NULL
) {
1924 if ((error
= xfs_qm_qino_alloc(mp
, &uip
,
1925 sbflags
| XFS_SB_UQUOTINO
,
1926 flags
| XFS_QMOPT_UQUOTA
)))
1927 return XFS_ERROR(error
);
1929 flags
&= ~XFS_QMOPT_SBVERSION
;
1931 if (XFS_IS_OQUOTA_ON(mp
) && gip
== NULL
) {
1932 flags
|= (XFS_IS_GQUOTA_ON(mp
) ?
1933 XFS_QMOPT_GQUOTA
: XFS_QMOPT_PQUOTA
);
1934 error
= xfs_qm_qino_alloc(mp
, &gip
,
1935 sbflags
| XFS_SB_GQUOTINO
, flags
);
1940 return XFS_ERROR(error
);
1944 mp
->m_quotainfo
->qi_uquotaip
= uip
;
1945 mp
->m_quotainfo
->qi_gquotaip
= gip
;
1953 * Just pop the least recently used dquot off the freelist and
1954 * recycle it. The returned dquot is locked.
1956 STATIC xfs_dquot_t
*
1957 xfs_qm_dqreclaim_one(void)
1959 xfs_dquot_t
*dqpout
;
1966 /* lockorder: hashchainlock, freelistlock, mplistlock, dqlock, dqflock */
1968 mutex_lock(&xfs_Gqm
->qm_dqfrlist_lock
);
1970 list_for_each_entry(dqp
, &xfs_Gqm
->qm_dqfrlist
, q_freelist
) {
1971 struct xfs_mount
*mp
= dqp
->q_mount
;
1975 * We are racing with dqlookup here. Naturally we don't
1976 * want to reclaim a dquot that lookup wants. We release the
1977 * freelist lock and start over, so that lookup will grab
1978 * both the dquot and the freelistlock.
1980 if (dqp
->dq_flags
& XFS_DQ_WANT
) {
1981 ASSERT(! (dqp
->dq_flags
& XFS_DQ_INACTIVE
));
1983 trace_xfs_dqreclaim_want(dqp
);
1986 mutex_unlock(&xfs_Gqm
->qm_dqfrlist_lock
);
1987 if (++restarts
>= XFS_QM_RECLAIM_MAX_RESTARTS
)
1989 XQM_STATS_INC(xqmstats
.xs_qm_dqwants
);
1994 * If the dquot is inactive, we are assured that it is
1995 * not on the mplist or the hashlist, and that makes our
1998 if (dqp
->dq_flags
& XFS_DQ_INACTIVE
) {
2000 ASSERT(! XFS_DQ_IS_DIRTY(dqp
));
2001 ASSERT(list_empty(&dqp
->q_hashlist
));
2002 ASSERT(list_empty(&dqp
->q_mplist
));
2003 list_del_init(&dqp
->q_freelist
);
2004 xfs_Gqm
->qm_dqfrlist_cnt
--;
2007 XQM_STATS_INC(xqmstats
.xs_qm_dqinact_reclaims
);
2011 ASSERT(dqp
->q_hash
);
2012 ASSERT(!list_empty(&dqp
->q_mplist
));
2015 * Try to grab the flush lock. If this dquot is in the process of
2016 * getting flushed to disk, we don't want to reclaim it.
2018 if (!xfs_dqflock_nowait(dqp
)) {
2024 * We have the flush lock so we know that this is not in the
2025 * process of being flushed. So, if this is dirty, flush it
2026 * DELWRI so that we don't get a freelist infested with
2029 if (XFS_DQ_IS_DIRTY(dqp
)) {
2032 trace_xfs_dqreclaim_dirty(dqp
);
2035 * We flush it delayed write, so don't bother
2036 * releasing the freelist lock.
2038 error
= xfs_qm_dqflush(dqp
, 0);
2040 xfs_fs_cmn_err(CE_WARN
, mp
,
2041 "xfs_qm_dqreclaim: dquot %p flush failed", dqp
);
2043 xfs_dqunlock(dqp
); /* dqflush unlocks dqflock */
2048 * We're trying to get the hashlock out of order. This races
2049 * with dqlookup; so, we giveup and goto the next dquot if
2050 * we couldn't get the hashlock. This way, we won't starve
2051 * a dqlookup process that holds the hashlock that is
2052 * waiting for the freelist lock.
2054 if (!mutex_trylock(&dqp
->q_hash
->qh_lock
)) {
2060 * This races with dquot allocation code as well as dqflush_all
2061 * and reclaim code. So, if we failed to grab the mplist lock,
2062 * giveup everything and start over.
2064 if (!mutex_trylock(&mp
->m_quotainfo
->qi_dqlist_lock
)) {
2066 mutex_unlock(&dqp
->q_hash
->qh_lock
);
2069 mutex_unlock(&xfs_Gqm
->qm_dqfrlist_lock
);
2070 if (restarts
++ >= XFS_QM_RECLAIM_MAX_RESTARTS
)
2075 ASSERT(dqp
->q_nrefs
== 0);
2076 list_del_init(&dqp
->q_mplist
);
2077 mp
->m_quotainfo
->qi_dquots
--;
2078 mp
->m_quotainfo
->qi_dqreclaims
++;
2079 list_del_init(&dqp
->q_hashlist
);
2080 dqp
->q_hash
->qh_version
++;
2081 list_del_init(&dqp
->q_freelist
);
2082 xfs_Gqm
->qm_dqfrlist_cnt
--;
2084 mutex_unlock(&mp
->m_quotainfo
->qi_dqlist_lock
);
2085 mutex_unlock(&dqp
->q_hash
->qh_lock
);
2091 if (restarts
>= XFS_QM_RECLAIM_MAX_RESTARTS
)
2094 mutex_unlock(&xfs_Gqm
->qm_dqfrlist_lock
);
2099 * Traverse the freelist of dquots and attempt to reclaim a maximum of
2100 * 'howmany' dquots. This operation races with dqlookup(), and attempts to
2101 * favor the lookup function ...
2104 xfs_qm_shake_freelist(
2113 while (nreclaimed
< howmany
) {
2114 dqp
= xfs_qm_dqreclaim_one();
2117 xfs_qm_dqdestroy(dqp
);
2124 * The kmem_shake interface is invoked when memory is running low.
2128 xfs_qm_shake(int nr_to_scan
, gfp_t gfp_mask
)
2130 int ndqused
, nfree
, n
;
2132 if (!kmem_shake_allow(gfp_mask
))
2137 nfree
= xfs_Gqm
->qm_dqfrlist_cnt
; /* free dquots */
2138 /* incore dquots in all f/s's */
2139 ndqused
= atomic_read(&xfs_Gqm
->qm_totaldquots
) - nfree
;
2141 ASSERT(ndqused
>= 0);
2143 if (nfree
<= ndqused
&& nfree
< ndquot
)
2146 ndqused
*= xfs_Gqm
->qm_dqfree_ratio
; /* target # of free dquots */
2147 n
= nfree
- ndqused
- ndquot
; /* # over target */
2149 return xfs_qm_shake_freelist(MAX(nfree
, n
));
2153 /*------------------------------------------------------------------*/
2156 * Return a new incore dquot. Depending on the number of
2157 * dquots in the system, we either allocate a new one on the kernel heap,
2158 * or reclaim a free one.
2159 * Return value is B_TRUE if we allocated a new dquot, B_FALSE if we managed
2160 * to reclaim an existing one from the freelist.
2163 xfs_qm_dqalloc_incore(
2164 xfs_dquot_t
**O_dqpp
)
2169 * Check against high water mark to see if we want to pop
2170 * a nincompoop dquot off the freelist.
2172 if (atomic_read(&xfs_Gqm
->qm_totaldquots
) >= ndquot
) {
2174 * Try to recycle a dquot from the freelist.
2176 if ((dqp
= xfs_qm_dqreclaim_one())) {
2177 XQM_STATS_INC(xqmstats
.xs_qm_dqreclaims
);
2179 * Just zero the core here. The rest will get
2180 * reinitialized by caller. XXX we shouldn't even
2183 memset(&dqp
->q_core
, 0, sizeof(dqp
->q_core
));
2187 XQM_STATS_INC(xqmstats
.xs_qm_dqreclaim_misses
);
2191 * Allocate a brand new dquot on the kernel heap and return it
2192 * to the caller to initialize.
2194 ASSERT(xfs_Gqm
->qm_dqzone
!= NULL
);
2195 *O_dqpp
= kmem_zone_zalloc(xfs_Gqm
->qm_dqzone
, KM_SLEEP
);
2196 atomic_inc(&xfs_Gqm
->qm_totaldquots
);
2203 * Start a transaction and write the incore superblock changes to
2204 * disk. flags parameter indicates which fields have changed.
2207 xfs_qm_write_sb_changes(
2215 cmn_err(CE_NOTE
, "Writing superblock quota changes :%s", mp
->m_fsname
);
2217 tp
= xfs_trans_alloc(mp
, XFS_TRANS_QM_SBCHANGE
);
2218 if ((error
= xfs_trans_reserve(tp
, 0,
2219 mp
->m_sb
.sb_sectsize
+ 128, 0,
2221 XFS_DEFAULT_LOG_COUNT
))) {
2222 xfs_trans_cancel(tp
, 0);
2226 xfs_mod_sb(tp
, flags
);
2227 error
= xfs_trans_commit(tp
, 0);
2233 /* --------------- utility functions for vnodeops ---------------- */
2237 * Given an inode, a uid and gid (from cred_t) make sure that we have
2238 * allocated relevant dquot(s) on disk, and that we won't exceed inode
2239 * quotas by creating this file.
2240 * This also attaches dquot(s) to the given inode after locking it,
2241 * and returns the dquots corresponding to the uid and/or gid.
2243 * in : inode (unlocked)
2244 * out : udquot, gdquot with references taken and unlocked
2248 struct xfs_inode
*ip
,
2253 struct xfs_dquot
**O_udqpp
,
2254 struct xfs_dquot
**O_gdqpp
)
2256 struct xfs_mount
*mp
= ip
->i_mount
;
2257 struct xfs_dquot
*uq
, *gq
;
2261 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
2264 lockflags
= XFS_ILOCK_EXCL
;
2265 xfs_ilock(ip
, lockflags
);
2267 if ((flags
& XFS_QMOPT_INHERIT
) && XFS_INHERIT_GID(ip
))
2268 gid
= ip
->i_d
.di_gid
;
2271 * Attach the dquot(s) to this inode, doing a dquot allocation
2272 * if necessary. The dquot(s) will not be locked.
2274 if (XFS_NOT_DQATTACHED(mp
, ip
)) {
2275 error
= xfs_qm_dqattach_locked(ip
, XFS_QMOPT_DQALLOC
);
2277 xfs_iunlock(ip
, lockflags
);
2283 if ((flags
& XFS_QMOPT_UQUOTA
) && XFS_IS_UQUOTA_ON(mp
)) {
2284 if (ip
->i_d
.di_uid
!= uid
) {
2286 * What we need is the dquot that has this uid, and
2287 * if we send the inode to dqget, the uid of the inode
2288 * takes priority over what's sent in the uid argument.
2289 * We must unlock inode here before calling dqget if
2290 * we're not sending the inode, because otherwise
2291 * we'll deadlock by doing trans_reserve while
2294 xfs_iunlock(ip
, lockflags
);
2295 if ((error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
) uid
,
2300 ASSERT(error
!= ENOENT
);
2304 * Get the ilock in the right order.
2307 lockflags
= XFS_ILOCK_SHARED
;
2308 xfs_ilock(ip
, lockflags
);
2311 * Take an extra reference, because we'll return
2314 ASSERT(ip
->i_udquot
);
2321 if ((flags
& XFS_QMOPT_GQUOTA
) && XFS_IS_GQUOTA_ON(mp
)) {
2322 if (ip
->i_d
.di_gid
!= gid
) {
2323 xfs_iunlock(ip
, lockflags
);
2324 if ((error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
)gid
,
2331 ASSERT(error
!= ENOENT
);
2335 lockflags
= XFS_ILOCK_SHARED
;
2336 xfs_ilock(ip
, lockflags
);
2338 ASSERT(ip
->i_gdquot
);
2344 } else if ((flags
& XFS_QMOPT_PQUOTA
) && XFS_IS_PQUOTA_ON(mp
)) {
2345 if (ip
->i_d
.di_projid
!= prid
) {
2346 xfs_iunlock(ip
, lockflags
);
2347 if ((error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
)prid
,
2354 ASSERT(error
!= ENOENT
);
2358 lockflags
= XFS_ILOCK_SHARED
;
2359 xfs_ilock(ip
, lockflags
);
2361 ASSERT(ip
->i_gdquot
);
2369 trace_xfs_dquot_dqalloc(ip
);
2371 xfs_iunlock(ip
, lockflags
);
2384 * Actually transfer ownership, and do dquot modifications.
2385 * These were already reserved.
2391 xfs_dquot_t
**IO_olddq
,
2394 xfs_dquot_t
*prevdq
;
2395 uint bfield
= XFS_IS_REALTIME_INODE(ip
) ?
2396 XFS_TRANS_DQ_RTBCOUNT
: XFS_TRANS_DQ_BCOUNT
;
2399 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
2400 ASSERT(XFS_IS_QUOTA_RUNNING(ip
->i_mount
));
2405 ASSERT(prevdq
!= newdq
);
2407 xfs_trans_mod_dquot(tp
, prevdq
, bfield
, -(ip
->i_d
.di_nblocks
));
2408 xfs_trans_mod_dquot(tp
, prevdq
, XFS_TRANS_DQ_ICOUNT
, -1);
2410 /* the sparkling new dquot */
2411 xfs_trans_mod_dquot(tp
, newdq
, bfield
, ip
->i_d
.di_nblocks
);
2412 xfs_trans_mod_dquot(tp
, newdq
, XFS_TRANS_DQ_ICOUNT
, 1);
2415 * Take an extra reference, because the inode
2416 * is going to keep this dquot pointer even
2417 * after the trans_commit.
2421 xfs_dqunlock(newdq
);
2428 * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID).
2431 xfs_qm_vop_chown_reserve(
2438 xfs_mount_t
*mp
= ip
->i_mount
;
2439 uint delblks
, blkflags
, prjflags
= 0;
2440 xfs_dquot_t
*unresudq
, *unresgdq
, *delblksudq
, *delblksgdq
;
2444 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
|XFS_ILOCK_SHARED
));
2445 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
2447 delblks
= ip
->i_delayed_blks
;
2448 delblksudq
= delblksgdq
= unresudq
= unresgdq
= NULL
;
2449 blkflags
= XFS_IS_REALTIME_INODE(ip
) ?
2450 XFS_QMOPT_RES_RTBLKS
: XFS_QMOPT_RES_REGBLKS
;
2452 if (XFS_IS_UQUOTA_ON(mp
) && udqp
&&
2453 ip
->i_d
.di_uid
!= (uid_t
)be32_to_cpu(udqp
->q_core
.d_id
)) {
2456 * If there are delayed allocation blocks, then we have to
2457 * unreserve those from the old dquot, and add them to the
2461 ASSERT(ip
->i_udquot
);
2462 unresudq
= ip
->i_udquot
;
2465 if (XFS_IS_OQUOTA_ON(ip
->i_mount
) && gdqp
) {
2466 if (XFS_IS_PQUOTA_ON(ip
->i_mount
) &&
2467 ip
->i_d
.di_projid
!= be32_to_cpu(gdqp
->q_core
.d_id
))
2468 prjflags
= XFS_QMOPT_ENOSPC
;
2471 (XFS_IS_GQUOTA_ON(ip
->i_mount
) &&
2472 ip
->i_d
.di_gid
!= be32_to_cpu(gdqp
->q_core
.d_id
))) {
2475 ASSERT(ip
->i_gdquot
);
2476 unresgdq
= ip
->i_gdquot
;
2481 if ((error
= xfs_trans_reserve_quota_bydquots(tp
, ip
->i_mount
,
2482 delblksudq
, delblksgdq
, ip
->i_d
.di_nblocks
, 1,
2483 flags
| blkflags
| prjflags
)))
2487 * Do the delayed blks reservations/unreservations now. Since, these
2488 * are done without the help of a transaction, if a reservation fails
2489 * its previous reservations won't be automatically undone by trans
2490 * code. So, we have to do it manually here.
2494 * Do the reservations first. Unreservation can't fail.
2496 ASSERT(delblksudq
|| delblksgdq
);
2497 ASSERT(unresudq
|| unresgdq
);
2498 if ((error
= xfs_trans_reserve_quota_bydquots(NULL
, ip
->i_mount
,
2499 delblksudq
, delblksgdq
, (xfs_qcnt_t
)delblks
, 0,
2500 flags
| blkflags
| prjflags
)))
2502 xfs_trans_reserve_quota_bydquots(NULL
, ip
->i_mount
,
2503 unresudq
, unresgdq
, -((xfs_qcnt_t
)delblks
), 0,
2511 xfs_qm_vop_rename_dqattach(
2512 struct xfs_inode
**i_tab
)
2514 struct xfs_mount
*mp
= i_tab
[0]->i_mount
;
2517 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
2520 for (i
= 0; (i
< 4 && i_tab
[i
]); i
++) {
2521 struct xfs_inode
*ip
= i_tab
[i
];
2525 * Watch out for duplicate entries in the table.
2527 if (i
== 0 || ip
!= i_tab
[i
-1]) {
2528 if (XFS_NOT_DQATTACHED(mp
, ip
)) {
2529 error
= xfs_qm_dqattach(ip
, 0);
2539 xfs_qm_vop_create_dqattach(
2540 struct xfs_trans
*tp
,
2541 struct xfs_inode
*ip
,
2542 struct xfs_dquot
*udqp
,
2543 struct xfs_dquot
*gdqp
)
2545 struct xfs_mount
*mp
= tp
->t_mountp
;
2547 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
2550 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
2551 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
2557 ASSERT(ip
->i_udquot
== NULL
);
2558 ip
->i_udquot
= udqp
;
2559 ASSERT(XFS_IS_UQUOTA_ON(mp
));
2560 ASSERT(ip
->i_d
.di_uid
== be32_to_cpu(udqp
->q_core
.d_id
));
2561 xfs_trans_mod_dquot(tp
, udqp
, XFS_TRANS_DQ_ICOUNT
, 1);
2567 ASSERT(ip
->i_gdquot
== NULL
);
2568 ip
->i_gdquot
= gdqp
;
2569 ASSERT(XFS_IS_OQUOTA_ON(mp
));
2570 ASSERT((XFS_IS_GQUOTA_ON(mp
) ?
2571 ip
->i_d
.di_gid
: ip
->i_d
.di_projid
) ==
2572 be32_to_cpu(gdqp
->q_core
.d_id
));
2573 xfs_trans_mod_dquot(tp
, gdqp
, XFS_TRANS_DQ_ICOUNT
, 1);