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"
52 * The global quota manager. There is only one of these for the entire
53 * system, _not_ one per file system. XQM keeps track of the overall
54 * quota functionality, including maintaining the freelist and hash
57 struct mutex xfs_Gqm_lock
;
58 struct xfs_qm
*xfs_Gqm
;
61 kmem_zone_t
*qm_dqzone
;
62 kmem_zone_t
*qm_dqtrxzone
;
64 static cred_t xfs_zerocr
;
66 STATIC
void xfs_qm_list_init(xfs_dqlist_t
*, char *, int);
67 STATIC
void xfs_qm_list_destroy(xfs_dqlist_t
*);
69 STATIC
void xfs_qm_freelist_init(xfs_frlist_t
*);
70 STATIC
void xfs_qm_freelist_destroy(xfs_frlist_t
*);
72 STATIC
int xfs_qm_init_quotainos(xfs_mount_t
*);
73 STATIC
int xfs_qm_init_quotainfo(xfs_mount_t
*);
74 STATIC
int xfs_qm_shake(int, gfp_t
);
76 static struct shrinker xfs_qm_shaker
= {
77 .shrink
= xfs_qm_shake
,
78 .seeks
= DEFAULT_SEEKS
,
82 extern struct mutex qcheck_lock
;
86 #define XQM_LIST_PRINT(l, NXT, title) \
88 xfs_dquot_t *dqp; int i = 0; \
89 cmn_err(CE_DEBUG, "%s (#%d)", title, (int) (l)->qh_nelems); \
90 for (dqp = (l)->qh_next; dqp != NULL; dqp = dqp->NXT) { \
91 cmn_err(CE_DEBUG, " %d. \"%d (%s)\" " \
92 "bcnt = %d, icnt = %d, refs = %d", \
93 ++i, (int) be32_to_cpu(dqp->q_core.d_id), \
94 DQFLAGTO_TYPESTR(dqp), \
95 (int) be64_to_cpu(dqp->q_core.d_bcount), \
96 (int) be64_to_cpu(dqp->q_core.d_icount), \
97 (int) dqp->q_nrefs); } \
100 #define XQM_LIST_PRINT(l, NXT, title) do { } while (0)
104 * Initialize the XQM structure.
105 * Note that there is not one quota manager per file system.
107 STATIC
struct xfs_qm
*
110 xfs_dqhash_t
*udqhash
, *gdqhash
;
116 * Initialize the dquot hash tables.
118 udqhash
= kmem_zalloc_greedy(&hsize
,
119 XFS_QM_HASHSIZE_LOW
* sizeof(xfs_dqhash_t
),
120 XFS_QM_HASHSIZE_HIGH
* sizeof(xfs_dqhash_t
),
121 KM_SLEEP
| KM_MAYFAIL
| KM_LARGE
);
122 gdqhash
= kmem_zalloc(hsize
, KM_SLEEP
| KM_LARGE
);
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 xfs_qm_freelist_init(&(xqm
->qm_dqfreelist
));
144 * dquot zone. we register our own low-memory callback.
147 xqm
->qm_dqzone
= kmem_zone_init(sizeof(xfs_dquot_t
),
149 qm_dqzone
= xqm
->qm_dqzone
;
151 xqm
->qm_dqzone
= qm_dqzone
;
153 register_shrinker(&xfs_qm_shaker
);
156 * The t_dqinfo portion of transactions.
159 xqm
->qm_dqtrxzone
= kmem_zone_init(sizeof(xfs_dquot_acct_t
),
161 qm_dqtrxzone
= xqm
->qm_dqtrxzone
;
163 xqm
->qm_dqtrxzone
= qm_dqtrxzone
;
165 atomic_set(&xqm
->qm_totaldquots
, 0);
166 xqm
->qm_dqfree_ratio
= XFS_QM_DQFREE_RATIO
;
169 mutex_init(&qcheck_lock
);
175 * Destroy the global quota manager when its reference count goes to zero.
184 ASSERT(xqm
->qm_nrefs
== 0);
185 unregister_shrinker(&xfs_qm_shaker
);
186 hsize
= xqm
->qm_dqhashmask
+ 1;
187 for (i
= 0; i
< hsize
; i
++) {
188 xfs_qm_list_destroy(&(xqm
->qm_usr_dqhtable
[i
]));
189 xfs_qm_list_destroy(&(xqm
->qm_grp_dqhtable
[i
]));
191 kmem_free(xqm
->qm_usr_dqhtable
);
192 kmem_free(xqm
->qm_grp_dqhtable
);
193 xqm
->qm_usr_dqhtable
= NULL
;
194 xqm
->qm_grp_dqhtable
= NULL
;
195 xqm
->qm_dqhashmask
= 0;
196 xfs_qm_freelist_destroy(&(xqm
->qm_dqfreelist
));
198 mutex_destroy(&qcheck_lock
);
204 * Called at mount time to let XQM know that another file system is
205 * starting quotas. This isn't crucial information as the individual mount
206 * structures are pretty independent, but it helps the XQM keep a
207 * global view of what's going on.
211 xfs_qm_hold_quotafs_ref(
212 struct xfs_mount
*mp
)
215 * Need to lock the xfs_Gqm structure for things like this. For example,
216 * the structure could disappear between the entry to this routine and
217 * a HOLD operation if not locked.
219 mutex_lock(&xfs_Gqm_lock
);
222 xfs_Gqm
= xfs_Gqm_init();
224 * We can keep a list of all filesystems with quotas mounted for
225 * debugging and statistical purposes, but ...
226 * Just take a reference and get out.
229 mutex_unlock(&xfs_Gqm_lock
);
236 * Release the reference that a filesystem took at mount time,
237 * so that we know when we need to destroy the entire quota manager.
241 xfs_qm_rele_quotafs_ref(
242 struct xfs_mount
*mp
)
244 xfs_dquot_t
*dqp
, *nextdqp
;
247 ASSERT(xfs_Gqm
->qm_nrefs
> 0);
250 * Go thru the freelist and destroy all inactive dquots.
252 xfs_qm_freelist_lock(xfs_Gqm
);
254 for (dqp
= xfs_Gqm
->qm_dqfreelist
.qh_next
;
255 dqp
!= (xfs_dquot_t
*)&(xfs_Gqm
->qm_dqfreelist
); ) {
257 nextdqp
= dqp
->dq_flnext
;
258 if (dqp
->dq_flags
& XFS_DQ_INACTIVE
) {
259 ASSERT(dqp
->q_mount
== NULL
);
260 ASSERT(! XFS_DQ_IS_DIRTY(dqp
));
261 ASSERT(dqp
->HL_PREVP
== NULL
);
262 ASSERT(dqp
->MPL_PREVP
== NULL
);
263 XQM_FREELIST_REMOVE(dqp
);
265 xfs_qm_dqdestroy(dqp
);
271 xfs_qm_freelist_unlock(xfs_Gqm
);
274 * Destroy the entire XQM. If somebody mounts with quotaon, this'll
277 mutex_lock(&xfs_Gqm_lock
);
278 if (--xfs_Gqm
->qm_nrefs
== 0) {
279 xfs_qm_destroy(xfs_Gqm
);
282 mutex_unlock(&xfs_Gqm_lock
);
286 * Just destroy the quotainfo structure.
290 struct xfs_mount
*mp
)
292 if (mp
->m_quotainfo
) {
293 xfs_qm_dqpurge_all(mp
, XFS_QMOPT_QUOTALL
| XFS_QMOPT_UMOUNTING
);
294 xfs_qm_destroy_quotainfo(mp
);
300 * This is called from xfs_mountfs to start quotas and initialize all
301 * necessary data structures like quotainfo. This is also responsible for
302 * running a quotacheck as necessary. We are guaranteed that the superblock
303 * is consistently read in at this point.
305 * If we fail here, the mount will continue with quota turned off. We don't
306 * need to inidicate success or failure at all.
316 * If quotas on realtime volumes is not supported, we disable
317 * quotas immediately.
319 if (mp
->m_sb
.sb_rextents
) {
321 "Cannot turn on quotas for realtime filesystem %s",
327 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
330 * Allocate the quotainfo structure inside the mount struct, and
331 * create quotainode(s), and change/rev superblock if necessary.
333 error
= xfs_qm_init_quotainfo(mp
);
336 * We must turn off quotas.
338 ASSERT(mp
->m_quotainfo
== NULL
);
343 * If any of the quotas are not consistent, do a quotacheck.
345 if (XFS_QM_NEED_QUOTACHECK(mp
)) {
346 error
= xfs_qm_quotacheck(mp
);
348 /* Quotacheck failed and disabled quotas. */
353 * If one type of quotas is off, then it will lose its
354 * quotachecked status, since we won't be doing accounting for
357 if (!XFS_IS_UQUOTA_ON(mp
))
358 mp
->m_qflags
&= ~XFS_UQUOTA_CHKD
;
359 if (!(XFS_IS_GQUOTA_ON(mp
) || XFS_IS_PQUOTA_ON(mp
)))
360 mp
->m_qflags
&= ~XFS_OQUOTA_CHKD
;
364 * We actually don't have to acquire the m_sb_lock at all.
365 * This can only be called from mount, and that's single threaded. XXX
367 spin_lock(&mp
->m_sb_lock
);
368 sbf
= mp
->m_sb
.sb_qflags
;
369 mp
->m_sb
.sb_qflags
= mp
->m_qflags
& XFS_MOUNT_QUOTA_ALL
;
370 spin_unlock(&mp
->m_sb_lock
);
372 if (sbf
!= (mp
->m_qflags
& XFS_MOUNT_QUOTA_ALL
)) {
373 if (xfs_qm_write_sb_changes(mp
, XFS_SB_QFLAGS
)) {
375 * We could only have been turning quotas off.
376 * We aren't in very good shape actually because
377 * the incore structures are convinced that quotas are
378 * off, but the on disk superblock doesn't know that !
380 ASSERT(!(XFS_IS_QUOTA_RUNNING(mp
)));
381 xfs_fs_cmn_err(CE_ALERT
, mp
,
382 "XFS mount_quotas: Superblock update failed!");
387 xfs_fs_cmn_err(CE_WARN
, mp
,
388 "Failed to initialize disk quotas.");
393 if (XFS_IS_QUOTA_ON(mp
))
394 xfs_qm_internalqcheck(mp
);
399 * Called from the vfsops layer.
402 xfs_qm_unmount_quotas(
406 * Release the dquots that root inode, et al might be holding,
407 * before we flush quotas and blow away the quotainfo structure.
409 ASSERT(mp
->m_rootip
);
410 xfs_qm_dqdetach(mp
->m_rootip
);
412 xfs_qm_dqdetach(mp
->m_rbmip
);
414 xfs_qm_dqdetach(mp
->m_rsumip
);
417 * Release the quota inodes.
419 if (mp
->m_quotainfo
) {
420 if (mp
->m_quotainfo
->qi_uquotaip
) {
421 IRELE(mp
->m_quotainfo
->qi_uquotaip
);
422 mp
->m_quotainfo
->qi_uquotaip
= NULL
;
424 if (mp
->m_quotainfo
->qi_gquotaip
) {
425 IRELE(mp
->m_quotainfo
->qi_gquotaip
);
426 mp
->m_quotainfo
->qi_gquotaip
= NULL
;
432 * Flush all dquots of the given file system to disk. The dquots are
433 * _not_ purged from memory here, just their data written to disk.
445 if (mp
->m_quotainfo
== NULL
)
449 xfs_qm_mplist_lock(mp
);
450 FOREACH_DQUOT_IN_MP(dqp
, mp
) {
452 if (! XFS_DQ_IS_DIRTY(dqp
)) {
456 xfs_dqtrace_entry(dqp
, "FLUSHALL: DQDIRTY");
457 /* XXX a sentinel would be better */
458 recl
= XFS_QI_MPLRECLAIMS(mp
);
459 if (!xfs_dqflock_nowait(dqp
)) {
461 * If we can't grab the flush lock then check
462 * to see if the dquot has been flushed delayed
463 * write. If so, grab its buffer and send it
464 * out immediately. We'll be able to acquire
465 * the flush lock when the I/O completes.
467 xfs_qm_dqflock_pushbuf_wait(dqp
);
470 * Let go of the mplist lock. We don't want to hold it
471 * across a disk write.
473 xfs_qm_mplist_unlock(mp
);
474 error
= xfs_qm_dqflush(dqp
, flags
);
479 xfs_qm_mplist_lock(mp
);
480 if (recl
!= XFS_QI_MPLRECLAIMS(mp
)) {
481 xfs_qm_mplist_unlock(mp
);
482 /* XXX restart limit */
487 xfs_qm_mplist_unlock(mp
);
492 * Release the group dquot pointers the user dquots may be
493 * carrying around as a hint. mplist is locked on entry and exit.
496 xfs_qm_detach_gdquots(
499 xfs_dquot_t
*dqp
, *gdqp
;
503 ASSERT(XFS_QM_IS_MPLIST_LOCKED(mp
));
504 dqp
= XFS_QI_MPLNEXT(mp
);
507 if ((gdqp
= dqp
->q_gdquot
)) {
509 dqp
->q_gdquot
= NULL
;
515 * Can't hold the mplist lock across a dqput.
516 * XXXmust convert to marker based iterations here.
518 nrecl
= XFS_QI_MPLRECLAIMS(mp
);
519 xfs_qm_mplist_unlock(mp
);
522 xfs_qm_mplist_lock(mp
);
523 if (nrecl
!= XFS_QI_MPLRECLAIMS(mp
))
531 * Go through all the incore dquots of this file system and take them
532 * off the mplist and hashlist, if the dquot type matches the dqtype
533 * parameter. This is used when turning off quota accounting for
534 * users and/or groups, as well as when the filesystem is unmounting.
539 uint flags
) /* QUOTAOFF/UMOUNTING/UQUOTA/PQUOTA/GQUOTA */
544 xfs_dquot_t
*nextdqp
;
547 if (mp
->m_quotainfo
== NULL
)
550 dqtype
= (flags
& XFS_QMOPT_UQUOTA
) ? XFS_DQ_USER
: 0;
551 dqtype
|= (flags
& XFS_QMOPT_PQUOTA
) ? XFS_DQ_PROJ
: 0;
552 dqtype
|= (flags
& XFS_QMOPT_GQUOTA
) ? XFS_DQ_GROUP
: 0;
554 xfs_qm_mplist_lock(mp
);
557 * In the first pass through all incore dquots of this filesystem,
558 * we release the group dquot pointers the user dquots may be
559 * carrying around as a hint. We need to do this irrespective of
560 * what's being turned off.
562 xfs_qm_detach_gdquots(mp
);
566 ASSERT(XFS_QM_IS_MPLIST_LOCKED(mp
));
568 * Try to get rid of all of the unwanted dquots. The idea is to
569 * get them off mplist and hashlist, but leave them on freelist.
571 dqp
= XFS_QI_MPLNEXT(mp
);
574 * It's OK to look at the type without taking dqlock here.
575 * We're holding the mplist lock here, and that's needed for
578 if ((dqp
->dq_flags
& dqtype
) == 0) {
583 if (!mutex_trylock(&dqp
->q_hash
->qh_lock
)) {
584 nrecl
= XFS_QI_MPLRECLAIMS(mp
);
585 xfs_qm_mplist_unlock(mp
);
586 mutex_lock(&dqp
->q_hash
->qh_lock
);
587 xfs_qm_mplist_lock(mp
);
590 * XXXTheoretically, we can get into a very long
591 * ping pong game here.
592 * No one can be adding dquots to the mplist at
593 * this point, but somebody might be taking things off.
595 if (nrecl
!= XFS_QI_MPLRECLAIMS(mp
)) {
596 mutex_unlock(&dqp
->q_hash
->qh_lock
);
602 * Take the dquot off the mplist and hashlist. It may remain on
603 * freelist in INACTIVE state.
605 nextdqp
= dqp
->MPL_NEXT
;
606 nmisses
+= xfs_qm_dqpurge(dqp
);
609 xfs_qm_mplist_unlock(mp
);
621 * Purge the dquot cache.
622 * None of the dquots should really be busy at this point.
624 if (mp
->m_quotainfo
) {
625 while ((ndquots
= xfs_qm_dqpurge_int(mp
, flags
))) {
638 xfs_dquot_t
*udqhint
, /* hint */
639 xfs_dquot_t
**IO_idqpp
)
644 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
648 * See if we already have it in the inode itself. IO_idqpp is
649 * &i_udquot or &i_gdquot. This made the code look weird, but
650 * made the logic a lot simpler.
654 xfs_dqtrace_entry(dqp
, "DQATTACH: found in ip");
659 * udqhint is the i_udquot field in inode, and is non-NULL only
660 * when the type arg is group/project. Its purpose is to save a
661 * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside
665 ASSERT(type
== XFS_DQ_GROUP
|| type
== XFS_DQ_PROJ
);
669 * No need to take dqlock to look at the id.
671 * The ID can't change until it gets reclaimed, and it won't
672 * be reclaimed as long as we have a ref from inode and we
675 dqp
= udqhint
->q_gdquot
;
676 if (dqp
&& be32_to_cpu(dqp
->q_core
.d_id
) == id
) {
679 ASSERT(*IO_idqpp
== NULL
);
683 xfs_dqunlock(udqhint
);
688 * We can't hold a dquot lock when we call the dqget code.
689 * We'll deadlock in no time, because of (not conforming to)
690 * lock ordering - the inodelock comes before any dquot lock,
691 * and we may drop and reacquire the ilock in xfs_qm_dqget().
693 xfs_dqunlock(udqhint
);
697 * Find the dquot from somewhere. This bumps the
698 * reference count of dquot and returns it locked.
699 * This can return ENOENT if dquot didn't exist on
700 * disk and we didn't ask it to allocate;
701 * ESRCH if quotas got turned off suddenly.
703 error
= xfs_qm_dqget(ip
->i_mount
, ip
, id
, type
, XFS_QMOPT_DOWARN
, &dqp
);
707 xfs_dqtrace_entry(dqp
, "DQATTACH: found by dqget");
710 * dqget may have dropped and re-acquired the ilock, but it guarantees
711 * that the dquot returned is the one that should go in the inode.
720 * Given a udquot and gdquot, attach a ptr to the group dquot in the
721 * udquot as a hint for future lookups. The idea sounds simple, but the
722 * execution isn't, because the udquot might have a group dquot attached
723 * already and getting rid of that gets us into lock ordering constraints.
724 * The process is complicated more by the fact that the dquots may or may not
725 * be locked on entry.
728 xfs_qm_dqattach_grouphint(
736 if ((tmp
= udq
->q_gdquot
)) {
742 udq
->q_gdquot
= NULL
;
744 * We can't keep any dqlocks when calling dqrele,
745 * because the freelist lock comes before dqlocks.
749 * we took a hard reference once upon a time in dqget,
750 * so give it back when the udquot no longer points at it
751 * dqput() does the unlocking of the dquot.
759 ASSERT(XFS_DQ_IS_LOCKED(udq
));
763 ASSERT(XFS_DQ_IS_LOCKED(udq
));
764 ASSERT(XFS_DQ_IS_LOCKED(gdq
));
766 * Somebody could have attached a gdquot here,
767 * when we dropped the uqlock. If so, just do nothing.
769 if (udq
->q_gdquot
== NULL
) {
780 * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON
782 * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed.
783 * Inode may get unlocked and relocked in here, and the caller must deal with
787 xfs_qm_dqattach_locked(
791 xfs_mount_t
*mp
= ip
->i_mount
;
795 if (!XFS_IS_QUOTA_RUNNING(mp
) ||
796 !XFS_IS_QUOTA_ON(mp
) ||
797 !XFS_NOT_DQATTACHED(mp
, ip
) ||
798 ip
->i_ino
== mp
->m_sb
.sb_uquotino
||
799 ip
->i_ino
== mp
->m_sb
.sb_gquotino
)
802 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
804 if (XFS_IS_UQUOTA_ON(mp
)) {
805 error
= xfs_qm_dqattach_one(ip
, ip
->i_d
.di_uid
, XFS_DQ_USER
,
806 flags
& XFS_QMOPT_DQALLOC
,
807 NULL
, &ip
->i_udquot
);
813 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
814 if (XFS_IS_OQUOTA_ON(mp
)) {
815 error
= XFS_IS_GQUOTA_ON(mp
) ?
816 xfs_qm_dqattach_one(ip
, ip
->i_d
.di_gid
, XFS_DQ_GROUP
,
817 flags
& XFS_QMOPT_DQALLOC
,
818 ip
->i_udquot
, &ip
->i_gdquot
) :
819 xfs_qm_dqattach_one(ip
, ip
->i_d
.di_projid
, XFS_DQ_PROJ
,
820 flags
& XFS_QMOPT_DQALLOC
,
821 ip
->i_udquot
, &ip
->i_gdquot
);
823 * Don't worry about the udquot that we may have
824 * attached above. It'll get detached, if not already.
832 * Attach this group quota to the user quota as a hint.
833 * This WON'T, in general, result in a thrash.
836 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
837 ASSERT(ip
->i_udquot
);
838 ASSERT(ip
->i_gdquot
);
841 * We may or may not have the i_udquot locked at this point,
842 * but this check is OK since we don't depend on the i_gdquot to
843 * be accurate 100% all the time. It is just a hint, and this
844 * will succeed in general.
846 if (ip
->i_udquot
->q_gdquot
== ip
->i_gdquot
)
849 * Attach i_gdquot to the gdquot hint inside the i_udquot.
851 xfs_qm_dqattach_grouphint(ip
->i_udquot
, ip
->i_gdquot
);
857 if (XFS_IS_UQUOTA_ON(mp
))
858 ASSERT(ip
->i_udquot
);
859 if (XFS_IS_OQUOTA_ON(mp
))
860 ASSERT(ip
->i_gdquot
);
862 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
869 struct xfs_inode
*ip
,
874 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
875 error
= xfs_qm_dqattach_locked(ip
, flags
);
876 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
882 * Release dquots (and their references) if any.
883 * The inode should be locked EXCL except when this's called by
890 if (!(ip
->i_udquot
|| ip
->i_gdquot
))
893 ASSERT(ip
->i_ino
!= ip
->i_mount
->m_sb
.sb_uquotino
);
894 ASSERT(ip
->i_ino
!= ip
->i_mount
->m_sb
.sb_gquotino
);
896 xfs_dqtrace_entry_ino(ip
->i_udquot
, "DQDETTACH", ip
);
897 xfs_qm_dqrele(ip
->i_udquot
);
901 xfs_dqtrace_entry_ino(ip
->i_gdquot
, "DQDETTACH", ip
);
902 xfs_qm_dqrele(ip
->i_gdquot
);
917 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
920 flush_flags
= (flags
& SYNC_WAIT
) ? XFS_QMOPT_SYNC
: XFS_QMOPT_DELWRI
;
924 xfs_qm_mplist_lock(mp
);
926 * dqpurge_all() also takes the mplist lock and iterate thru all dquots
927 * in quotaoff. However, if the QUOTA_ACTIVE bits are not cleared
928 * when we have the mplist lock, we know that dquots will be consistent
929 * as long as we have it locked.
931 if (! XFS_IS_QUOTA_ON(mp
)) {
932 xfs_qm_mplist_unlock(mp
);
935 FOREACH_DQUOT_IN_MP(dqp
, mp
) {
937 * If this is vfs_sync calling, then skip the dquots that
938 * don't 'seem' to be dirty. ie. don't acquire dqlock.
939 * This is very similar to what xfs_sync does with inodes.
941 if (flags
& SYNC_TRYLOCK
) {
942 if (!XFS_DQ_IS_DIRTY(dqp
))
944 if (!xfs_qm_dqlock_nowait(dqp
))
951 * Now, find out for sure if this dquot is dirty or not.
953 if (! XFS_DQ_IS_DIRTY(dqp
)) {
958 /* XXX a sentinel would be better */
959 recl
= XFS_QI_MPLRECLAIMS(mp
);
960 if (!xfs_dqflock_nowait(dqp
)) {
961 if (flags
& SYNC_TRYLOCK
) {
966 * If we can't grab the flush lock then if the caller
967 * really wanted us to give this our best shot, so
968 * see if we can give a push to the buffer before we wait
969 * on the flush lock. At this point, we know that
970 * even though the dquot is being flushed,
971 * it has (new) dirty data.
973 xfs_qm_dqflock_pushbuf_wait(dqp
);
976 * Let go of the mplist lock. We don't want to hold it
977 * across a disk write
979 xfs_qm_mplist_unlock(mp
);
980 xfs_dqtrace_entry(dqp
, "XQM_SYNC: DQFLUSH");
981 error
= xfs_qm_dqflush(dqp
, flush_flags
);
983 if (error
&& XFS_FORCED_SHUTDOWN(mp
))
984 return 0; /* Need to prevent umount failure */
988 xfs_qm_mplist_lock(mp
);
989 if (recl
!= XFS_QI_MPLRECLAIMS(mp
)) {
990 if (++restarts
>= XFS_QM_SYNC_MAX_RESTARTS
)
993 xfs_qm_mplist_unlock(mp
);
998 xfs_qm_mplist_unlock(mp
);
1003 * The hash chains and the mplist use the same xfs_dqhash structure as
1004 * their list head, but we can take the mplist qh_lock and one of the
1005 * hash qh_locks at the same time without any problem as they aren't
1008 static struct lock_class_key xfs_quota_mplist_class
;
1011 * This initializes all the quota information that's kept in the
1015 xfs_qm_init_quotainfo(
1018 xfs_quotainfo_t
*qinf
;
1022 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1025 * Tell XQM that we exist as soon as possible.
1027 if ((error
= xfs_qm_hold_quotafs_ref(mp
))) {
1031 qinf
= mp
->m_quotainfo
= kmem_zalloc(sizeof(xfs_quotainfo_t
), KM_SLEEP
);
1034 * See if quotainodes are setup, and if not, allocate them,
1035 * and change the superblock accordingly.
1037 if ((error
= xfs_qm_init_quotainos(mp
))) {
1039 mp
->m_quotainfo
= NULL
;
1043 xfs_qm_list_init(&qinf
->qi_dqlist
, "mpdqlist", 0);
1044 lockdep_set_class(&qinf
->qi_dqlist
.qh_lock
, &xfs_quota_mplist_class
);
1046 qinf
->qi_dqreclaims
= 0;
1048 /* mutex used to serialize quotaoffs */
1049 mutex_init(&qinf
->qi_quotaofflock
);
1051 /* Precalc some constants */
1052 qinf
->qi_dqchunklen
= XFS_FSB_TO_BB(mp
, XFS_DQUOT_CLUSTER_SIZE_FSB
);
1053 ASSERT(qinf
->qi_dqchunklen
);
1054 qinf
->qi_dqperchunk
= BBTOB(qinf
->qi_dqchunklen
);
1055 do_div(qinf
->qi_dqperchunk
, sizeof(xfs_dqblk_t
));
1057 mp
->m_qflags
|= (mp
->m_sb
.sb_qflags
& XFS_ALL_QUOTA_CHKD
);
1060 * We try to get the limits from the superuser's limits fields.
1061 * This is quite hacky, but it is standard quota practice.
1062 * We look at the USR dquot with id == 0 first, but if user quotas
1063 * are not enabled we goto the GRP dquot with id == 0.
1064 * We don't really care to keep separate default limits for user
1065 * and group quotas, at least not at this point.
1067 error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
)0,
1068 XFS_IS_UQUOTA_RUNNING(mp
) ? XFS_DQ_USER
:
1069 (XFS_IS_GQUOTA_RUNNING(mp
) ? XFS_DQ_GROUP
:
1071 XFS_QMOPT_DQSUSER
|XFS_QMOPT_DOWARN
,
1074 xfs_disk_dquot_t
*ddqp
= &dqp
->q_core
;
1077 * The warnings and timers set the grace period given to
1078 * a user or group before he or she can not perform any
1079 * more writing. If it is zero, a default is used.
1081 qinf
->qi_btimelimit
= ddqp
->d_btimer
?
1082 be32_to_cpu(ddqp
->d_btimer
) : XFS_QM_BTIMELIMIT
;
1083 qinf
->qi_itimelimit
= ddqp
->d_itimer
?
1084 be32_to_cpu(ddqp
->d_itimer
) : XFS_QM_ITIMELIMIT
;
1085 qinf
->qi_rtbtimelimit
= ddqp
->d_rtbtimer
?
1086 be32_to_cpu(ddqp
->d_rtbtimer
) : XFS_QM_RTBTIMELIMIT
;
1087 qinf
->qi_bwarnlimit
= ddqp
->d_bwarns
?
1088 be16_to_cpu(ddqp
->d_bwarns
) : XFS_QM_BWARNLIMIT
;
1089 qinf
->qi_iwarnlimit
= ddqp
->d_iwarns
?
1090 be16_to_cpu(ddqp
->d_iwarns
) : XFS_QM_IWARNLIMIT
;
1091 qinf
->qi_rtbwarnlimit
= ddqp
->d_rtbwarns
?
1092 be16_to_cpu(ddqp
->d_rtbwarns
) : XFS_QM_RTBWARNLIMIT
;
1093 qinf
->qi_bhardlimit
= be64_to_cpu(ddqp
->d_blk_hardlimit
);
1094 qinf
->qi_bsoftlimit
= be64_to_cpu(ddqp
->d_blk_softlimit
);
1095 qinf
->qi_ihardlimit
= be64_to_cpu(ddqp
->d_ino_hardlimit
);
1096 qinf
->qi_isoftlimit
= be64_to_cpu(ddqp
->d_ino_softlimit
);
1097 qinf
->qi_rtbhardlimit
= be64_to_cpu(ddqp
->d_rtb_hardlimit
);
1098 qinf
->qi_rtbsoftlimit
= be64_to_cpu(ddqp
->d_rtb_softlimit
);
1101 * We sent the XFS_QMOPT_DQSUSER flag to dqget because
1102 * we don't want this dquot cached. We haven't done a
1103 * quotacheck yet, and quotacheck doesn't like incore dquots.
1105 xfs_qm_dqdestroy(dqp
);
1107 qinf
->qi_btimelimit
= XFS_QM_BTIMELIMIT
;
1108 qinf
->qi_itimelimit
= XFS_QM_ITIMELIMIT
;
1109 qinf
->qi_rtbtimelimit
= XFS_QM_RTBTIMELIMIT
;
1110 qinf
->qi_bwarnlimit
= XFS_QM_BWARNLIMIT
;
1111 qinf
->qi_iwarnlimit
= XFS_QM_IWARNLIMIT
;
1112 qinf
->qi_rtbwarnlimit
= XFS_QM_RTBWARNLIMIT
;
1120 * Gets called when unmounting a filesystem or when all quotas get
1122 * This purges the quota inodes, destroys locks and frees itself.
1125 xfs_qm_destroy_quotainfo(
1128 xfs_quotainfo_t
*qi
;
1130 qi
= mp
->m_quotainfo
;
1132 ASSERT(xfs_Gqm
!= NULL
);
1135 * Release the reference that XQM kept, so that we know
1136 * when the XQM structure should be freed. We cannot assume
1137 * that xfs_Gqm is non-null after this point.
1139 xfs_qm_rele_quotafs_ref(mp
);
1141 xfs_qm_list_destroy(&qi
->qi_dqlist
);
1143 if (qi
->qi_uquotaip
) {
1144 IRELE(qi
->qi_uquotaip
);
1145 qi
->qi_uquotaip
= NULL
; /* paranoia */
1147 if (qi
->qi_gquotaip
) {
1148 IRELE(qi
->qi_gquotaip
);
1149 qi
->qi_gquotaip
= NULL
;
1151 mutex_destroy(&qi
->qi_quotaofflock
);
1153 mp
->m_quotainfo
= NULL
;
1158 /* ------------------- PRIVATE STATIC FUNCTIONS ----------------------- */
1167 mutex_init(&list
->qh_lock
);
1168 list
->qh_next
= NULL
;
1169 list
->qh_version
= 0;
1170 list
->qh_nelems
= 0;
1174 xfs_qm_list_destroy(
1177 mutex_destroy(&(list
->qh_lock
));
1182 * Stripped down version of dqattach. This doesn't attach, or even look at the
1183 * dquots attached to the inode. The rationale is that there won't be any
1184 * attached at the time this is called from quotacheck.
1187 xfs_qm_dqget_noattach(
1189 xfs_dquot_t
**O_udqpp
,
1190 xfs_dquot_t
**O_gdqpp
)
1194 xfs_dquot_t
*udqp
, *gdqp
;
1196 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
1201 if (XFS_IS_UQUOTA_ON(mp
)) {
1202 ASSERT(ip
->i_udquot
== NULL
);
1204 * We want the dquot allocated if it doesn't exist.
1206 if ((error
= xfs_qm_dqget(mp
, ip
, ip
->i_d
.di_uid
, XFS_DQ_USER
,
1207 XFS_QMOPT_DQALLOC
| XFS_QMOPT_DOWARN
,
1210 * Shouldn't be able to turn off quotas here.
1212 ASSERT(error
!= ESRCH
);
1213 ASSERT(error
!= ENOENT
);
1219 if (XFS_IS_OQUOTA_ON(mp
)) {
1220 ASSERT(ip
->i_gdquot
== NULL
);
1223 error
= XFS_IS_GQUOTA_ON(mp
) ?
1224 xfs_qm_dqget(mp
, ip
,
1225 ip
->i_d
.di_gid
, XFS_DQ_GROUP
,
1226 XFS_QMOPT_DQALLOC
|XFS_QMOPT_DOWARN
,
1228 xfs_qm_dqget(mp
, ip
,
1229 ip
->i_d
.di_projid
, XFS_DQ_PROJ
,
1230 XFS_QMOPT_DQALLOC
|XFS_QMOPT_DOWARN
,
1234 xfs_qm_dqrele(udqp
);
1235 ASSERT(error
!= ESRCH
);
1236 ASSERT(error
!= ENOENT
);
1241 /* Reacquire the locks in the right order */
1243 if (! xfs_qm_dqlock_nowait(udqp
)) {
1255 if (udqp
) ASSERT(XFS_DQ_IS_LOCKED(udqp
));
1256 if (gdqp
) ASSERT(XFS_DQ_IS_LOCKED(gdqp
));
1262 * Create an inode and return with a reference already taken, but unlocked
1263 * This is how we create quota inodes
1276 tp
= xfs_trans_alloc(mp
, XFS_TRANS_QM_QINOCREATE
);
1277 if ((error
= xfs_trans_reserve(tp
,
1278 XFS_QM_QINOCREATE_SPACE_RES(mp
),
1279 XFS_CREATE_LOG_RES(mp
), 0,
1280 XFS_TRANS_PERM_LOG_RES
,
1281 XFS_CREATE_LOG_COUNT
))) {
1282 xfs_trans_cancel(tp
, 0);
1286 if ((error
= xfs_dir_ialloc(&tp
, NULL
, S_IFREG
, 1, 0,
1287 &xfs_zerocr
, 0, 1, ip
, &committed
))) {
1288 xfs_trans_cancel(tp
, XFS_TRANS_RELEASE_LOG_RES
|
1294 * Keep an extra reference to this quota inode. This inode is
1295 * locked exclusively and joined to the transaction already.
1297 ASSERT(xfs_isilocked(*ip
, XFS_ILOCK_EXCL
));
1301 * Make the changes in the superblock, and log those too.
1302 * sbfields arg may contain fields other than *QUOTINO;
1303 * VERSIONNUM for example.
1305 spin_lock(&mp
->m_sb_lock
);
1306 if (flags
& XFS_QMOPT_SBVERSION
) {
1307 #if defined(DEBUG) && defined(XFS_LOUD_RECOVERY)
1308 unsigned oldv
= mp
->m_sb
.sb_versionnum
;
1310 ASSERT(!xfs_sb_version_hasquota(&mp
->m_sb
));
1311 ASSERT((sbfields
& (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
1312 XFS_SB_GQUOTINO
| XFS_SB_QFLAGS
)) ==
1313 (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
1314 XFS_SB_GQUOTINO
| XFS_SB_QFLAGS
));
1316 xfs_sb_version_addquota(&mp
->m_sb
);
1317 mp
->m_sb
.sb_uquotino
= NULLFSINO
;
1318 mp
->m_sb
.sb_gquotino
= NULLFSINO
;
1320 /* qflags will get updated _after_ quotacheck */
1321 mp
->m_sb
.sb_qflags
= 0;
1322 #if defined(DEBUG) && defined(XFS_LOUD_RECOVERY)
1324 "Old superblock version %x, converting to %x.",
1325 oldv
, mp
->m_sb
.sb_versionnum
);
1328 if (flags
& XFS_QMOPT_UQUOTA
)
1329 mp
->m_sb
.sb_uquotino
= (*ip
)->i_ino
;
1331 mp
->m_sb
.sb_gquotino
= (*ip
)->i_ino
;
1332 spin_unlock(&mp
->m_sb_lock
);
1333 xfs_mod_sb(tp
, sbfields
);
1335 if ((error
= xfs_trans_commit(tp
, XFS_TRANS_RELEASE_LOG_RES
))) {
1336 xfs_fs_cmn_err(CE_ALERT
, mp
, "XFS qino_alloc failed!");
1344 xfs_qm_reset_dqcounts(
1350 xfs_disk_dquot_t
*ddq
;
1353 xfs_buftrace("RESET DQUOTS", bp
);
1355 * Reset all counters and timers. They'll be
1356 * started afresh by xfs_qm_quotacheck.
1359 j
= XFS_FSB_TO_B(mp
, XFS_DQUOT_CLUSTER_SIZE_FSB
);
1360 do_div(j
, sizeof(xfs_dqblk_t
));
1361 ASSERT(XFS_QM_DQPERBLK(mp
) == j
);
1363 ddq
= (xfs_disk_dquot_t
*)XFS_BUF_PTR(bp
);
1364 for (j
= 0; j
< XFS_QM_DQPERBLK(mp
); j
++) {
1366 * Do a sanity check, and if needed, repair the dqblk. Don't
1367 * output any warnings because it's perfectly possible to
1368 * find uninitialised dquot blks. See comment in xfs_qm_dqcheck.
1370 (void) xfs_qm_dqcheck(ddq
, id
+j
, type
, XFS_QMOPT_DQREPAIR
,
1374 ddq
->d_rtbcount
= 0;
1377 ddq
->d_rtbtimer
= 0;
1380 ddq
->d_rtbwarns
= 0;
1381 ddq
= (xfs_disk_dquot_t
*) ((xfs_dqblk_t
*)ddq
+ 1);
1390 xfs_filblks_t blkcnt
,
1401 incr
= (blkcnt
> XFS_QM_MAX_DQCLUSTER_LOGSZ
) ?
1402 XFS_QM_MAX_DQCLUSTER_LOGSZ
: blkcnt
;
1403 type
= flags
& XFS_QMOPT_UQUOTA
? XFS_DQ_USER
:
1404 (flags
& XFS_QMOPT_PQUOTA
? XFS_DQ_PROJ
: XFS_DQ_GROUP
);
1408 * Blkcnt arg can be a very big number, and might even be
1409 * larger than the log itself. So, we have to break it up into
1410 * manageable-sized transactions.
1411 * Note that we don't start a permanent transaction here; we might
1412 * not be able to get a log reservation for the whole thing up front,
1413 * and we don't really care to either, because we just discard
1414 * everything if we were to crash in the middle of this loop.
1417 error
= xfs_trans_read_buf(mp
, NULL
, mp
->m_ddev_targp
,
1418 XFS_FSB_TO_DADDR(mp
, bno
),
1419 (int)XFS_QI_DQCHUNKLEN(mp
), 0, &bp
);
1423 xfs_qm_reset_dqcounts(mp
, bp
, firstid
, type
);
1424 xfs_bdwrite(mp
, bp
);
1426 * goto the next block.
1429 firstid
+= XFS_QM_DQPERBLK(mp
);
1435 * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a
1436 * caller supplied function for every chunk of dquots that we find.
1444 xfs_bmbt_irec_t
*map
;
1445 int i
, nmaps
; /* number of map entries */
1446 int error
; /* return value */
1447 xfs_fileoff_t lblkno
;
1448 xfs_filblks_t maxlblkcnt
;
1450 xfs_fsblock_t rablkno
;
1451 xfs_filblks_t rablkcnt
;
1455 * This looks racy, but we can't keep an inode lock across a
1456 * trans_reserve. But, this gets called during quotacheck, and that
1457 * happens only at mount time which is single threaded.
1459 if (qip
->i_d
.di_nblocks
== 0)
1462 map
= kmem_alloc(XFS_DQITER_MAP_SIZE
* sizeof(*map
), KM_SLEEP
);
1465 maxlblkcnt
= XFS_B_TO_FSB(mp
, (xfs_ufsize_t
)XFS_MAXIOFFSET(mp
));
1467 nmaps
= XFS_DQITER_MAP_SIZE
;
1469 * We aren't changing the inode itself. Just changing
1470 * some of its data. No new blocks are added here, and
1471 * the inode is never added to the transaction.
1473 xfs_ilock(qip
, XFS_ILOCK_SHARED
);
1474 error
= xfs_bmapi(NULL
, qip
, lblkno
,
1475 maxlblkcnt
- lblkno
,
1478 0, map
, &nmaps
, NULL
, NULL
);
1479 xfs_iunlock(qip
, XFS_ILOCK_SHARED
);
1483 ASSERT(nmaps
<= XFS_DQITER_MAP_SIZE
);
1484 for (i
= 0; i
< nmaps
; i
++) {
1485 ASSERT(map
[i
].br_startblock
!= DELAYSTARTBLOCK
);
1486 ASSERT(map
[i
].br_blockcount
);
1489 lblkno
+= map
[i
].br_blockcount
;
1491 if (map
[i
].br_startblock
== HOLESTARTBLOCK
)
1494 firstid
= (xfs_dqid_t
) map
[i
].br_startoff
*
1495 XFS_QM_DQPERBLK(mp
);
1497 * Do a read-ahead on the next extent.
1499 if ((i
+1 < nmaps
) &&
1500 (map
[i
+1].br_startblock
!= HOLESTARTBLOCK
)) {
1501 rablkcnt
= map
[i
+1].br_blockcount
;
1502 rablkno
= map
[i
+1].br_startblock
;
1503 while (rablkcnt
--) {
1504 xfs_baread(mp
->m_ddev_targp
,
1505 XFS_FSB_TO_DADDR(mp
, rablkno
),
1506 (int)XFS_QI_DQCHUNKLEN(mp
));
1511 * Iterate thru all the blks in the extent and
1512 * reset the counters of all the dquots inside them.
1514 if ((error
= xfs_qm_dqiter_bufs(mp
,
1516 map
[i
].br_startblock
,
1517 map
[i
].br_blockcount
,
1525 } while (nmaps
> 0);
1533 * Called by dqusage_adjust in doing a quotacheck.
1534 * Given the inode, and a dquot (either USR or GRP, doesn't matter),
1535 * this updates its incore copy as well as the buffer copy. This is
1536 * so that once the quotacheck is done, we can just log all the buffers,
1537 * as opposed to logging numerous updates to individual dquots.
1540 xfs_qm_quotacheck_dqadjust(
1545 ASSERT(XFS_DQ_IS_LOCKED(dqp
));
1546 xfs_dqtrace_entry(dqp
, "QCHECK DQADJUST");
1548 * Adjust the inode count and the block count to reflect this inode's
1551 be64_add_cpu(&dqp
->q_core
.d_icount
, 1);
1552 dqp
->q_res_icount
++;
1554 be64_add_cpu(&dqp
->q_core
.d_bcount
, nblks
);
1555 dqp
->q_res_bcount
+= nblks
;
1558 be64_add_cpu(&dqp
->q_core
.d_rtbcount
, rtblks
);
1559 dqp
->q_res_rtbcount
+= rtblks
;
1563 * Set default limits, adjust timers (since we changed usages)
1565 if (! XFS_IS_SUSER_DQUOT(dqp
)) {
1566 xfs_qm_adjust_dqlimits(dqp
->q_mount
, &dqp
->q_core
);
1567 xfs_qm_adjust_dqtimers(dqp
->q_mount
, &dqp
->q_core
);
1570 dqp
->dq_flags
|= XFS_DQ_DIRTY
;
1576 xfs_qcnt_t
*O_rtblks
)
1578 xfs_filblks_t rtblks
; /* total rt blks */
1579 xfs_extnum_t idx
; /* extent record index */
1580 xfs_ifork_t
*ifp
; /* inode fork pointer */
1581 xfs_extnum_t nextents
; /* number of extent entries */
1584 ASSERT(XFS_IS_REALTIME_INODE(ip
));
1585 ifp
= XFS_IFORK_PTR(ip
, XFS_DATA_FORK
);
1586 if (!(ifp
->if_flags
& XFS_IFEXTENTS
)) {
1587 if ((error
= xfs_iread_extents(NULL
, ip
, XFS_DATA_FORK
)))
1591 nextents
= ifp
->if_bytes
/ (uint
)sizeof(xfs_bmbt_rec_t
);
1592 for (idx
= 0; idx
< nextents
; idx
++)
1593 rtblks
+= xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp
, idx
));
1594 *O_rtblks
= (xfs_qcnt_t
)rtblks
;
1599 * callback routine supplied to bulkstat(). Given an inumber, find its
1600 * dquots and update them to account for resources taken by that inode.
1604 xfs_qm_dqusage_adjust(
1605 xfs_mount_t
*mp
, /* mount point for filesystem */
1606 xfs_ino_t ino
, /* inode number to get data for */
1607 void __user
*buffer
, /* not used */
1608 int ubsize
, /* not used */
1609 xfs_daddr_t bno
, /* starting block of inode cluster */
1610 int *ubused
, /* not used */
1611 int *res
) /* result code value */
1614 xfs_dquot_t
*udqp
, *gdqp
;
1615 xfs_qcnt_t nblks
, rtblks
;
1618 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1621 * rootino must have its resources accounted for, not so with the quota
1624 if (ino
== mp
->m_sb
.sb_uquotino
|| ino
== mp
->m_sb
.sb_gquotino
) {
1625 *res
= BULKSTAT_RV_NOTHING
;
1626 return XFS_ERROR(EINVAL
);
1630 * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget
1631 * interface expects the inode to be exclusively locked because that's
1632 * the case in all other instances. It's OK that we do this because
1633 * quotacheck is done only at mount time.
1635 if ((error
= xfs_iget(mp
, NULL
, ino
, 0, XFS_ILOCK_EXCL
, &ip
, bno
))) {
1636 *res
= BULKSTAT_RV_NOTHING
;
1641 * Obtain the locked dquots. In case of an error (eg. allocation
1642 * fails for ENOSPC), we return the negative of the error number
1643 * to bulkstat, so that it can get propagated to quotacheck() and
1644 * making us disable quotas for the file system.
1646 if ((error
= xfs_qm_dqget_noattach(ip
, &udqp
, &gdqp
))) {
1647 xfs_iput(ip
, XFS_ILOCK_EXCL
);
1648 *res
= BULKSTAT_RV_GIVEUP
;
1653 if (! XFS_IS_REALTIME_INODE(ip
)) {
1654 nblks
= (xfs_qcnt_t
)ip
->i_d
.di_nblocks
;
1657 * Walk thru the extent list and count the realtime blocks.
1659 if ((error
= xfs_qm_get_rtblks(ip
, &rtblks
))) {
1660 xfs_iput(ip
, XFS_ILOCK_EXCL
);
1665 *res
= BULKSTAT_RV_GIVEUP
;
1668 nblks
= (xfs_qcnt_t
)ip
->i_d
.di_nblocks
- rtblks
;
1670 ASSERT(ip
->i_delayed_blks
== 0);
1673 * We can't release the inode while holding its dquot locks.
1674 * The inode can go into inactive and might try to acquire the dquotlocks.
1675 * So, just unlock here and do a vn_rele at the end.
1677 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1680 * Add the (disk blocks and inode) resources occupied by this
1681 * inode to its dquots. We do this adjustment in the incore dquot,
1682 * and also copy the changes to its buffer.
1683 * We don't care about putting these changes in a transaction
1684 * envelope because if we crash in the middle of a 'quotacheck'
1685 * we have to start from the beginning anyway.
1686 * Once we're done, we'll log all the dquot bufs.
1688 * The *QUOTA_ON checks below may look pretty racy, but quotachecks
1689 * and quotaoffs don't race. (Quotachecks happen at mount time only).
1691 if (XFS_IS_UQUOTA_ON(mp
)) {
1693 xfs_qm_quotacheck_dqadjust(udqp
, nblks
, rtblks
);
1696 if (XFS_IS_OQUOTA_ON(mp
)) {
1698 xfs_qm_quotacheck_dqadjust(gdqp
, nblks
, rtblks
);
1702 * Now release the inode. This will send it to 'inactive', and
1703 * possibly even free blocks.
1710 *res
= BULKSTAT_RV_DIDONE
;
1715 * Walk thru all the filesystem inodes and construct a consistent view
1716 * of the disk quota world. If the quotacheck fails, disable quotas.
1722 int done
, count
, error
;
1725 xfs_inode_t
*uip
, *gip
;
1733 ASSERT(XFS_QI_UQIP(mp
) || XFS_QI_GQIP(mp
));
1734 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
1737 * There should be no cached dquots. The (simplistic) quotacheck
1738 * algorithm doesn't like that.
1740 ASSERT(XFS_QI_MPLNDQUOTS(mp
) == 0);
1742 cmn_err(CE_NOTE
, "XFS quotacheck %s: Please wait.", mp
->m_fsname
);
1745 * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset
1746 * their counters to zero. We need a clean slate.
1747 * We don't log our changes till later.
1749 if ((uip
= XFS_QI_UQIP(mp
))) {
1750 if ((error
= xfs_qm_dqiterate(mp
, uip
, XFS_QMOPT_UQUOTA
)))
1752 flags
|= XFS_UQUOTA_CHKD
;
1755 if ((gip
= XFS_QI_GQIP(mp
))) {
1756 if ((error
= xfs_qm_dqiterate(mp
, gip
, XFS_IS_GQUOTA_ON(mp
) ?
1757 XFS_QMOPT_GQUOTA
: XFS_QMOPT_PQUOTA
)))
1759 flags
|= XFS_OQUOTA_CHKD
;
1764 * Iterate thru all the inodes in the file system,
1765 * adjusting the corresponding dquot counters in core.
1767 error
= xfs_bulkstat(mp
, &lastino
, &count
,
1768 xfs_qm_dqusage_adjust
,
1769 structsz
, NULL
, &done
);
1776 * We've made all the changes that we need to make incore.
1777 * Flush them down to disk buffers if everything was updated
1781 error
= xfs_qm_dqflush_all(mp
, XFS_QMOPT_DELWRI
);
1784 * We can get this error if we couldn't do a dquot allocation inside
1785 * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the
1786 * dirty dquots that might be cached, we just want to get rid of them
1787 * and turn quotaoff. The dquots won't be attached to any of the inodes
1788 * at this point (because we intentionally didn't in dqget_noattach).
1791 xfs_qm_dqpurge_all(mp
, XFS_QMOPT_QUOTALL
| XFS_QMOPT_QUOTAOFF
);
1796 * We didn't log anything, because if we crashed, we'll have to
1797 * start the quotacheck from scratch anyway. However, we must make
1798 * sure that our dquot changes are secure before we put the
1799 * quotacheck'd stamp on the superblock. So, here we do a synchronous
1802 XFS_bflush(mp
->m_ddev_targp
);
1805 * If one type of quotas is off, then it will lose its
1806 * quotachecked status, since we won't be doing accounting for
1807 * that type anymore.
1809 mp
->m_qflags
&= ~(XFS_OQUOTA_CHKD
| XFS_UQUOTA_CHKD
);
1810 mp
->m_qflags
|= flags
;
1812 XQM_LIST_PRINT(&(XFS_QI_MPL_LIST(mp
)), MPL_NEXT
, "++++ Mp list +++");
1816 cmn_err(CE_WARN
, "XFS quotacheck %s: Unsuccessful (Error %d): "
1817 "Disabling quotas.",
1818 mp
->m_fsname
, error
);
1820 * We must turn off quotas.
1822 ASSERT(mp
->m_quotainfo
!= NULL
);
1823 ASSERT(xfs_Gqm
!= NULL
);
1824 xfs_qm_destroy_quotainfo(mp
);
1825 if (xfs_mount_reset_sbqflags(mp
)) {
1826 cmn_err(CE_WARN
, "XFS quotacheck %s: "
1827 "Failed to reset quota flags.", mp
->m_fsname
);
1830 cmn_err(CE_NOTE
, "XFS quotacheck %s: Done.", mp
->m_fsname
);
1836 * This is called after the superblock has been read in and we're ready to
1837 * iget the quota inodes.
1840 xfs_qm_init_quotainos(
1843 xfs_inode_t
*uip
, *gip
;
1848 ASSERT(mp
->m_quotainfo
);
1854 * Get the uquota and gquota inodes
1856 if (xfs_sb_version_hasquota(&mp
->m_sb
)) {
1857 if (XFS_IS_UQUOTA_ON(mp
) &&
1858 mp
->m_sb
.sb_uquotino
!= NULLFSINO
) {
1859 ASSERT(mp
->m_sb
.sb_uquotino
> 0);
1860 if ((error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_uquotino
,
1862 return XFS_ERROR(error
);
1864 if (XFS_IS_OQUOTA_ON(mp
) &&
1865 mp
->m_sb
.sb_gquotino
!= NULLFSINO
) {
1866 ASSERT(mp
->m_sb
.sb_gquotino
> 0);
1867 if ((error
= xfs_iget(mp
, NULL
, mp
->m_sb
.sb_gquotino
,
1871 return XFS_ERROR(error
);
1875 flags
|= XFS_QMOPT_SBVERSION
;
1876 sbflags
|= (XFS_SB_VERSIONNUM
| XFS_SB_UQUOTINO
|
1877 XFS_SB_GQUOTINO
| XFS_SB_QFLAGS
);
1881 * Create the two inodes, if they don't exist already. The changes
1882 * made above will get added to a transaction and logged in one of
1883 * the qino_alloc calls below. If the device is readonly,
1884 * temporarily switch to read-write to do this.
1886 if (XFS_IS_UQUOTA_ON(mp
) && uip
== NULL
) {
1887 if ((error
= xfs_qm_qino_alloc(mp
, &uip
,
1888 sbflags
| XFS_SB_UQUOTINO
,
1889 flags
| XFS_QMOPT_UQUOTA
)))
1890 return XFS_ERROR(error
);
1892 flags
&= ~XFS_QMOPT_SBVERSION
;
1894 if (XFS_IS_OQUOTA_ON(mp
) && gip
== NULL
) {
1895 flags
|= (XFS_IS_GQUOTA_ON(mp
) ?
1896 XFS_QMOPT_GQUOTA
: XFS_QMOPT_PQUOTA
);
1897 error
= xfs_qm_qino_alloc(mp
, &gip
,
1898 sbflags
| XFS_SB_GQUOTINO
, flags
);
1903 return XFS_ERROR(error
);
1907 XFS_QI_UQIP(mp
) = uip
;
1908 XFS_QI_GQIP(mp
) = gip
;
1915 * Traverse the freelist of dquots and attempt to reclaim a maximum of
1916 * 'howmany' dquots. This operation races with dqlookup(), and attempts to
1917 * favor the lookup function ...
1918 * XXXsup merge this with qm_reclaim_one().
1921 xfs_qm_shake_freelist(
1926 xfs_dquot_t
*dqp
, *nextdqp
;
1938 cmn_err(CE_DEBUG
, "Shake free 0x%x", howmany
);
1940 /* lock order is : hashchainlock, freelistlock, mplistlock */
1942 xfs_qm_freelist_lock(xfs_Gqm
);
1944 for (dqp
= xfs_Gqm
->qm_dqfreelist
.qh_next
;
1945 ((dqp
!= (xfs_dquot_t
*) &xfs_Gqm
->qm_dqfreelist
) &&
1946 nreclaimed
< howmany
); ) {
1950 * We are racing with dqlookup here. Naturally we don't
1951 * want to reclaim a dquot that lookup wants.
1953 if (dqp
->dq_flags
& XFS_DQ_WANT
) {
1955 xfs_qm_freelist_unlock(xfs_Gqm
);
1956 if (++restarts
>= XFS_QM_RECLAIM_MAX_RESTARTS
)
1958 XQM_STATS_INC(xqmstats
.xs_qm_dqwants
);
1963 * If the dquot is inactive, we are assured that it is
1964 * not on the mplist or the hashlist, and that makes our
1967 if (dqp
->dq_flags
& XFS_DQ_INACTIVE
) {
1968 ASSERT(dqp
->q_mount
== NULL
);
1969 ASSERT(! XFS_DQ_IS_DIRTY(dqp
));
1970 ASSERT(dqp
->HL_PREVP
== NULL
);
1971 ASSERT(dqp
->MPL_PREVP
== NULL
);
1972 XQM_STATS_INC(xqmstats
.xs_qm_dqinact_reclaims
);
1973 nextdqp
= dqp
->dq_flnext
;
1977 ASSERT(dqp
->MPL_PREVP
);
1979 * Try to grab the flush lock. If this dquot is in the process of
1980 * getting flushed to disk, we don't want to reclaim it.
1982 if (!xfs_dqflock_nowait(dqp
)) {
1984 dqp
= dqp
->dq_flnext
;
1989 * We have the flush lock so we know that this is not in the
1990 * process of being flushed. So, if this is dirty, flush it
1991 * DELWRI so that we don't get a freelist infested with
1994 if (XFS_DQ_IS_DIRTY(dqp
)) {
1996 xfs_dqtrace_entry(dqp
, "DQSHAKE: DQDIRTY");
1998 * We flush it delayed write, so don't bother
1999 * releasing the mplock.
2001 error
= xfs_qm_dqflush(dqp
, XFS_QMOPT_DELWRI
);
2003 xfs_fs_cmn_err(CE_WARN
, dqp
->q_mount
,
2004 "xfs_qm_dqflush_all: dquot %p flush failed", dqp
);
2006 xfs_dqunlock(dqp
); /* dqflush unlocks dqflock */
2007 dqp
= dqp
->dq_flnext
;
2011 * We're trying to get the hashlock out of order. This races
2012 * with dqlookup; so, we giveup and goto the next dquot if
2013 * we couldn't get the hashlock. This way, we won't starve
2014 * a dqlookup process that holds the hashlock that is
2015 * waiting for the freelist lock.
2017 if (!mutex_trylock(&dqp
->q_hash
->qh_lock
)) {
2020 dqp
= dqp
->dq_flnext
;
2024 * This races with dquot allocation code as well as dqflush_all
2025 * and reclaim code. So, if we failed to grab the mplist lock,
2026 * giveup everything and start over.
2030 if (! xfs_qm_mplist_nowait(dqp
->q_mount
)) {
2031 /* XXX put a sentinel so that we can come back here */
2034 mutex_unlock(&hash
->qh_lock
);
2035 xfs_qm_freelist_unlock(xfs_Gqm
);
2036 if (++restarts
>= XFS_QM_RECLAIM_MAX_RESTARTS
)
2040 xfs_dqtrace_entry(dqp
, "DQSHAKE: UNLINKING");
2042 cmn_err(CE_DEBUG
, "Shake 0x%p, ID 0x%x\n",
2043 dqp
, be32_to_cpu(dqp
->q_core
.d_id
));
2045 ASSERT(dqp
->q_nrefs
== 0);
2046 nextdqp
= dqp
->dq_flnext
;
2047 XQM_MPLIST_REMOVE(&(XFS_QI_MPL_LIST(dqp
->q_mount
)), dqp
);
2048 XQM_HASHLIST_REMOVE(hash
, dqp
);
2050 xfs_qm_mplist_unlock(dqp
->q_mount
);
2051 mutex_unlock(&hash
->qh_lock
);
2054 XQM_FREELIST_REMOVE(dqp
);
2057 XQM_STATS_INC(xqmstats
.xs_qm_dqshake_reclaims
);
2058 xfs_qm_dqdestroy(dqp
);
2061 xfs_qm_freelist_unlock(xfs_Gqm
);
2067 * The kmem_shake interface is invoked when memory is running low.
2071 xfs_qm_shake(int nr_to_scan
, gfp_t gfp_mask
)
2073 int ndqused
, nfree
, n
;
2075 if (!kmem_shake_allow(gfp_mask
))
2080 nfree
= xfs_Gqm
->qm_dqfreelist
.qh_nelems
; /* free dquots */
2081 /* incore dquots in all f/s's */
2082 ndqused
= atomic_read(&xfs_Gqm
->qm_totaldquots
) - nfree
;
2084 ASSERT(ndqused
>= 0);
2086 if (nfree
<= ndqused
&& nfree
< ndquot
)
2089 ndqused
*= xfs_Gqm
->qm_dqfree_ratio
; /* target # of free dquots */
2090 n
= nfree
- ndqused
- ndquot
; /* # over target */
2092 return xfs_qm_shake_freelist(MAX(nfree
, n
));
2097 * Just pop the least recently used dquot off the freelist and
2098 * recycle it. The returned dquot is locked.
2100 STATIC xfs_dquot_t
*
2101 xfs_qm_dqreclaim_one(void)
2103 xfs_dquot_t
*dqpout
;
2112 /* lockorder: hashchainlock, freelistlock, mplistlock, dqlock, dqflock */
2114 xfs_qm_freelist_lock(xfs_Gqm
);
2116 FOREACH_DQUOT_IN_FREELIST(dqp
, &(xfs_Gqm
->qm_dqfreelist
)) {
2120 * We are racing with dqlookup here. Naturally we don't
2121 * want to reclaim a dquot that lookup wants. We release the
2122 * freelist lock and start over, so that lookup will grab
2123 * both the dquot and the freelistlock.
2125 if (dqp
->dq_flags
& XFS_DQ_WANT
) {
2126 ASSERT(! (dqp
->dq_flags
& XFS_DQ_INACTIVE
));
2127 xfs_dqtrace_entry(dqp
, "DQRECLAIM: DQWANT");
2129 xfs_qm_freelist_unlock(xfs_Gqm
);
2130 if (++restarts
>= XFS_QM_RECLAIM_MAX_RESTARTS
)
2132 XQM_STATS_INC(xqmstats
.xs_qm_dqwants
);
2137 * If the dquot is inactive, we are assured that it is
2138 * not on the mplist or the hashlist, and that makes our
2141 if (dqp
->dq_flags
& XFS_DQ_INACTIVE
) {
2142 ASSERT(dqp
->q_mount
== NULL
);
2143 ASSERT(! XFS_DQ_IS_DIRTY(dqp
));
2144 ASSERT(dqp
->HL_PREVP
== NULL
);
2145 ASSERT(dqp
->MPL_PREVP
== NULL
);
2146 XQM_FREELIST_REMOVE(dqp
);
2149 XQM_STATS_INC(xqmstats
.xs_qm_dqinact_reclaims
);
2153 ASSERT(dqp
->q_hash
);
2154 ASSERT(dqp
->MPL_PREVP
);
2157 * Try to grab the flush lock. If this dquot is in the process of
2158 * getting flushed to disk, we don't want to reclaim it.
2160 if (!xfs_dqflock_nowait(dqp
)) {
2166 * We have the flush lock so we know that this is not in the
2167 * process of being flushed. So, if this is dirty, flush it
2168 * DELWRI so that we don't get a freelist infested with
2171 if (XFS_DQ_IS_DIRTY(dqp
)) {
2173 xfs_dqtrace_entry(dqp
, "DQRECLAIM: DQDIRTY");
2175 * We flush it delayed write, so don't bother
2176 * releasing the freelist lock.
2178 error
= xfs_qm_dqflush(dqp
, XFS_QMOPT_DELWRI
);
2180 xfs_fs_cmn_err(CE_WARN
, dqp
->q_mount
,
2181 "xfs_qm_dqreclaim: dquot %p flush failed", dqp
);
2183 xfs_dqunlock(dqp
); /* dqflush unlocks dqflock */
2187 if (! xfs_qm_mplist_nowait(dqp
->q_mount
)) {
2193 if (!mutex_trylock(&dqp
->q_hash
->qh_lock
))
2196 ASSERT(dqp
->q_nrefs
== 0);
2197 xfs_dqtrace_entry(dqp
, "DQRECLAIM: UNLINKING");
2198 XQM_MPLIST_REMOVE(&(XFS_QI_MPL_LIST(dqp
->q_mount
)), dqp
);
2199 XQM_HASHLIST_REMOVE(dqp
->q_hash
, dqp
);
2200 XQM_FREELIST_REMOVE(dqp
);
2202 mutex_unlock(&dqp
->q_hash
->qh_lock
);
2204 xfs_qm_mplist_unlock(dqp
->q_mount
);
2211 xfs_qm_freelist_unlock(xfs_Gqm
);
2216 /*------------------------------------------------------------------*/
2219 * Return a new incore dquot. Depending on the number of
2220 * dquots in the system, we either allocate a new one on the kernel heap,
2221 * or reclaim a free one.
2222 * Return value is B_TRUE if we allocated a new dquot, B_FALSE if we managed
2223 * to reclaim an existing one from the freelist.
2226 xfs_qm_dqalloc_incore(
2227 xfs_dquot_t
**O_dqpp
)
2232 * Check against high water mark to see if we want to pop
2233 * a nincompoop dquot off the freelist.
2235 if (atomic_read(&xfs_Gqm
->qm_totaldquots
) >= ndquot
) {
2237 * Try to recycle a dquot from the freelist.
2239 if ((dqp
= xfs_qm_dqreclaim_one())) {
2240 XQM_STATS_INC(xqmstats
.xs_qm_dqreclaims
);
2242 * Just zero the core here. The rest will get
2243 * reinitialized by caller. XXX we shouldn't even
2246 memset(&dqp
->q_core
, 0, sizeof(dqp
->q_core
));
2250 XQM_STATS_INC(xqmstats
.xs_qm_dqreclaim_misses
);
2254 * Allocate a brand new dquot on the kernel heap and return it
2255 * to the caller to initialize.
2257 ASSERT(xfs_Gqm
->qm_dqzone
!= NULL
);
2258 *O_dqpp
= kmem_zone_zalloc(xfs_Gqm
->qm_dqzone
, KM_SLEEP
);
2259 atomic_inc(&xfs_Gqm
->qm_totaldquots
);
2266 * Start a transaction and write the incore superblock changes to
2267 * disk. flags parameter indicates which fields have changed.
2270 xfs_qm_write_sb_changes(
2278 cmn_err(CE_NOTE
, "Writing superblock quota changes :%s", mp
->m_fsname
);
2280 tp
= xfs_trans_alloc(mp
, XFS_TRANS_QM_SBCHANGE
);
2281 if ((error
= xfs_trans_reserve(tp
, 0,
2282 mp
->m_sb
.sb_sectsize
+ 128, 0,
2284 XFS_DEFAULT_LOG_COUNT
))) {
2285 xfs_trans_cancel(tp
, 0);
2289 xfs_mod_sb(tp
, flags
);
2290 error
= xfs_trans_commit(tp
, 0);
2296 /* --------------- utility functions for vnodeops ---------------- */
2300 * Given an inode, a uid and gid (from cred_t) make sure that we have
2301 * allocated relevant dquot(s) on disk, and that we won't exceed inode
2302 * quotas by creating this file.
2303 * This also attaches dquot(s) to the given inode after locking it,
2304 * and returns the dquots corresponding to the uid and/or gid.
2306 * in : inode (unlocked)
2307 * out : udquot, gdquot with references taken and unlocked
2311 struct xfs_inode
*ip
,
2316 struct xfs_dquot
**O_udqpp
,
2317 struct xfs_dquot
**O_gdqpp
)
2319 struct xfs_mount
*mp
= ip
->i_mount
;
2320 struct xfs_dquot
*uq
, *gq
;
2324 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
2327 lockflags
= XFS_ILOCK_EXCL
;
2328 xfs_ilock(ip
, lockflags
);
2330 if ((flags
& XFS_QMOPT_INHERIT
) && XFS_INHERIT_GID(ip
))
2331 gid
= ip
->i_d
.di_gid
;
2334 * Attach the dquot(s) to this inode, doing a dquot allocation
2335 * if necessary. The dquot(s) will not be locked.
2337 if (XFS_NOT_DQATTACHED(mp
, ip
)) {
2338 error
= xfs_qm_dqattach_locked(ip
, XFS_QMOPT_DQALLOC
);
2340 xfs_iunlock(ip
, lockflags
);
2346 if ((flags
& XFS_QMOPT_UQUOTA
) && XFS_IS_UQUOTA_ON(mp
)) {
2347 if (ip
->i_d
.di_uid
!= uid
) {
2349 * What we need is the dquot that has this uid, and
2350 * if we send the inode to dqget, the uid of the inode
2351 * takes priority over what's sent in the uid argument.
2352 * We must unlock inode here before calling dqget if
2353 * we're not sending the inode, because otherwise
2354 * we'll deadlock by doing trans_reserve while
2357 xfs_iunlock(ip
, lockflags
);
2358 if ((error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
) uid
,
2363 ASSERT(error
!= ENOENT
);
2367 * Get the ilock in the right order.
2370 lockflags
= XFS_ILOCK_SHARED
;
2371 xfs_ilock(ip
, lockflags
);
2374 * Take an extra reference, because we'll return
2377 ASSERT(ip
->i_udquot
);
2384 if ((flags
& XFS_QMOPT_GQUOTA
) && XFS_IS_GQUOTA_ON(mp
)) {
2385 if (ip
->i_d
.di_gid
!= gid
) {
2386 xfs_iunlock(ip
, lockflags
);
2387 if ((error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
)gid
,
2394 ASSERT(error
!= ENOENT
);
2398 lockflags
= XFS_ILOCK_SHARED
;
2399 xfs_ilock(ip
, lockflags
);
2401 ASSERT(ip
->i_gdquot
);
2407 } else if ((flags
& XFS_QMOPT_PQUOTA
) && XFS_IS_PQUOTA_ON(mp
)) {
2408 if (ip
->i_d
.di_projid
!= prid
) {
2409 xfs_iunlock(ip
, lockflags
);
2410 if ((error
= xfs_qm_dqget(mp
, NULL
, (xfs_dqid_t
)prid
,
2417 ASSERT(error
!= ENOENT
);
2421 lockflags
= XFS_ILOCK_SHARED
;
2422 xfs_ilock(ip
, lockflags
);
2424 ASSERT(ip
->i_gdquot
);
2432 xfs_dqtrace_entry_ino(uq
, "DQALLOC", ip
);
2434 xfs_iunlock(ip
, lockflags
);
2447 * Actually transfer ownership, and do dquot modifications.
2448 * These were already reserved.
2454 xfs_dquot_t
**IO_olddq
,
2457 xfs_dquot_t
*prevdq
;
2458 uint bfield
= XFS_IS_REALTIME_INODE(ip
) ?
2459 XFS_TRANS_DQ_RTBCOUNT
: XFS_TRANS_DQ_BCOUNT
;
2462 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
2463 ASSERT(XFS_IS_QUOTA_RUNNING(ip
->i_mount
));
2468 ASSERT(prevdq
!= newdq
);
2470 xfs_trans_mod_dquot(tp
, prevdq
, bfield
, -(ip
->i_d
.di_nblocks
));
2471 xfs_trans_mod_dquot(tp
, prevdq
, XFS_TRANS_DQ_ICOUNT
, -1);
2473 /* the sparkling new dquot */
2474 xfs_trans_mod_dquot(tp
, newdq
, bfield
, ip
->i_d
.di_nblocks
);
2475 xfs_trans_mod_dquot(tp
, newdq
, XFS_TRANS_DQ_ICOUNT
, 1);
2478 * Take an extra reference, because the inode
2479 * is going to keep this dquot pointer even
2480 * after the trans_commit.
2484 xfs_dqunlock(newdq
);
2491 * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID).
2494 xfs_qm_vop_chown_reserve(
2501 xfs_mount_t
*mp
= ip
->i_mount
;
2502 uint delblks
, blkflags
, prjflags
= 0;
2503 xfs_dquot_t
*unresudq
, *unresgdq
, *delblksudq
, *delblksgdq
;
2507 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
|XFS_ILOCK_SHARED
));
2508 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
2510 delblks
= ip
->i_delayed_blks
;
2511 delblksudq
= delblksgdq
= unresudq
= unresgdq
= NULL
;
2512 blkflags
= XFS_IS_REALTIME_INODE(ip
) ?
2513 XFS_QMOPT_RES_RTBLKS
: XFS_QMOPT_RES_REGBLKS
;
2515 if (XFS_IS_UQUOTA_ON(mp
) && udqp
&&
2516 ip
->i_d
.di_uid
!= (uid_t
)be32_to_cpu(udqp
->q_core
.d_id
)) {
2519 * If there are delayed allocation blocks, then we have to
2520 * unreserve those from the old dquot, and add them to the
2524 ASSERT(ip
->i_udquot
);
2525 unresudq
= ip
->i_udquot
;
2528 if (XFS_IS_OQUOTA_ON(ip
->i_mount
) && gdqp
) {
2529 if (XFS_IS_PQUOTA_ON(ip
->i_mount
) &&
2530 ip
->i_d
.di_projid
!= be32_to_cpu(gdqp
->q_core
.d_id
))
2531 prjflags
= XFS_QMOPT_ENOSPC
;
2534 (XFS_IS_GQUOTA_ON(ip
->i_mount
) &&
2535 ip
->i_d
.di_gid
!= be32_to_cpu(gdqp
->q_core
.d_id
))) {
2538 ASSERT(ip
->i_gdquot
);
2539 unresgdq
= ip
->i_gdquot
;
2544 if ((error
= xfs_trans_reserve_quota_bydquots(tp
, ip
->i_mount
,
2545 delblksudq
, delblksgdq
, ip
->i_d
.di_nblocks
, 1,
2546 flags
| blkflags
| prjflags
)))
2550 * Do the delayed blks reservations/unreservations now. Since, these
2551 * are done without the help of a transaction, if a reservation fails
2552 * its previous reservations won't be automatically undone by trans
2553 * code. So, we have to do it manually here.
2557 * Do the reservations first. Unreservation can't fail.
2559 ASSERT(delblksudq
|| delblksgdq
);
2560 ASSERT(unresudq
|| unresgdq
);
2561 if ((error
= xfs_trans_reserve_quota_bydquots(NULL
, ip
->i_mount
,
2562 delblksudq
, delblksgdq
, (xfs_qcnt_t
)delblks
, 0,
2563 flags
| blkflags
| prjflags
)))
2565 xfs_trans_reserve_quota_bydquots(NULL
, ip
->i_mount
,
2566 unresudq
, unresgdq
, -((xfs_qcnt_t
)delblks
), 0,
2574 xfs_qm_vop_rename_dqattach(
2575 struct xfs_inode
**i_tab
)
2577 struct xfs_mount
*mp
= i_tab
[0]->i_mount
;
2580 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
2583 for (i
= 0; (i
< 4 && i_tab
[i
]); i
++) {
2584 struct xfs_inode
*ip
= i_tab
[i
];
2588 * Watch out for duplicate entries in the table.
2590 if (i
== 0 || ip
!= i_tab
[i
-1]) {
2591 if (XFS_NOT_DQATTACHED(mp
, ip
)) {
2592 error
= xfs_qm_dqattach(ip
, 0);
2602 xfs_qm_vop_create_dqattach(
2603 struct xfs_trans
*tp
,
2604 struct xfs_inode
*ip
,
2605 struct xfs_dquot
*udqp
,
2606 struct xfs_dquot
*gdqp
)
2608 struct xfs_mount
*mp
= tp
->t_mountp
;
2610 if (!XFS_IS_QUOTA_RUNNING(mp
) || !XFS_IS_QUOTA_ON(mp
))
2613 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_EXCL
));
2614 ASSERT(XFS_IS_QUOTA_RUNNING(mp
));
2620 ASSERT(ip
->i_udquot
== NULL
);
2621 ip
->i_udquot
= udqp
;
2622 ASSERT(XFS_IS_UQUOTA_ON(mp
));
2623 ASSERT(ip
->i_d
.di_uid
== be32_to_cpu(udqp
->q_core
.d_id
));
2624 xfs_trans_mod_dquot(tp
, udqp
, XFS_TRANS_DQ_ICOUNT
, 1);
2630 ASSERT(ip
->i_gdquot
== NULL
);
2631 ip
->i_gdquot
= gdqp
;
2632 ASSERT(XFS_IS_OQUOTA_ON(mp
));
2633 ASSERT((XFS_IS_GQUOTA_ON(mp
) ?
2634 ip
->i_d
.di_gid
: ip
->i_d
.di_projid
) ==
2635 be32_to_cpu(gdqp
->q_core
.d_id
));
2636 xfs_trans_mod_dquot(tp
, gdqp
, XFS_TRANS_DQ_ICOUNT
, 1);
2640 /* ------------- list stuff -----------------*/
2642 xfs_qm_freelist_init(xfs_frlist_t
*ql
)
2644 ql
->qh_next
= ql
->qh_prev
= (xfs_dquot_t
*) ql
;
2645 mutex_init(&ql
->qh_lock
);
2651 xfs_qm_freelist_destroy(xfs_frlist_t
*ql
)
2653 xfs_dquot_t
*dqp
, *nextdqp
;
2655 mutex_lock(&ql
->qh_lock
);
2656 for (dqp
= ql
->qh_next
;
2657 dqp
!= (xfs_dquot_t
*)ql
; ) {
2659 nextdqp
= dqp
->dq_flnext
;
2661 cmn_err(CE_DEBUG
, "FREELIST destroy 0x%p", dqp
);
2663 XQM_FREELIST_REMOVE(dqp
);
2665 xfs_qm_dqdestroy(dqp
);
2668 mutex_unlock(&ql
->qh_lock
);
2669 mutex_destroy(&ql
->qh_lock
);
2671 ASSERT(ql
->qh_nelems
== 0);
2675 xfs_qm_freelist_insert(xfs_frlist_t
*ql
, xfs_dquot_t
*dq
)
2677 dq
->dq_flnext
= ql
->qh_next
;
2678 dq
->dq_flprev
= (xfs_dquot_t
*)ql
;
2680 dq
->dq_flnext
->dq_flprev
= dq
;
2681 xfs_Gqm
->qm_dqfreelist
.qh_nelems
++;
2682 xfs_Gqm
->qm_dqfreelist
.qh_version
++;
2686 xfs_qm_freelist_unlink(xfs_dquot_t
*dq
)
2688 xfs_dquot_t
*next
= dq
->dq_flnext
;
2689 xfs_dquot_t
*prev
= dq
->dq_flprev
;
2691 next
->dq_flprev
= prev
;
2692 prev
->dq_flnext
= next
;
2693 dq
->dq_flnext
= dq
->dq_flprev
= dq
;
2694 xfs_Gqm
->qm_dqfreelist
.qh_nelems
--;
2695 xfs_Gqm
->qm_dqfreelist
.qh_version
++;
2699 xfs_qm_freelist_append(xfs_frlist_t
*ql
, xfs_dquot_t
*dq
)
2701 xfs_qm_freelist_insert((xfs_frlist_t
*)ql
->qh_prev
, dq
);