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
20 #include "xfs_shared.h"
21 #include "xfs_format.h"
22 #include "xfs_log_format.h"
23 #include "xfs_trans_resv.h"
27 #include "xfs_mount.h"
28 #include "xfs_inode.h"
29 #include "xfs_ialloc.h"
30 #include "xfs_itable.h"
31 #include "xfs_quota.h"
32 #include "xfs_error.h"
34 #include "xfs_bmap_btree.h"
35 #include "xfs_trans.h"
36 #include "xfs_trans_space.h"
38 #include "xfs_trace.h"
39 #include "xfs_icache.h"
40 #include "xfs_cksum.h"
41 #include "xfs_dinode.h"
44 * The global quota manager. There is only one of these for the entire
45 * system, _not_ one per file system. XQM keeps track of the overall
46 * quota functionality, including maintaining the freelist and hash
49 STATIC int xfs_qm_init_quotainos(xfs_mount_t *);
50 STATIC int xfs_qm_init_quotainfo(xfs_mount_t *);
53 STATIC void xfs_qm_dqfree_one(struct xfs_dquot *dqp);
55 * We use the batch lookup interface to iterate over the dquots as it
56 * currently is the only interface into the radix tree code that allows
57 * fuzzy lookups instead of exact matches. Holding the lock over multiple
58 * operations is fine as all callers are used either during mount/umount
61 #define XFS_DQ_LOOKUP_BATCH 32
67 int (*execute)(struct xfs_dquot *dqp, void *data),
70 struct xfs_quotainfo *qi = mp->m_quotainfo;
71 struct radix_tree_root *tree = xfs_dquot_tree(qi, type);
83 struct xfs_dquot *batch[XFS_DQ_LOOKUP_BATCH];
87 mutex_lock(&qi->qi_tree_lock);
88 nr_found = radix_tree_gang_lookup(tree, (void **)batch,
89 next_index, XFS_DQ_LOOKUP_BATCH);
91 mutex_unlock(&qi->qi_tree_lock);
95 for (i = 0; i < nr_found; i++) {
96 struct xfs_dquot *dqp = batch[i];
98 next_index = be32_to_cpu(dqp->q_core.d_id) + 1;
100 error = execute(batch[i], data);
101 if (error == -EAGAIN) {
105 if (error && last_error != -EFSCORRUPTED)
109 mutex_unlock(&qi->qi_tree_lock);
111 /* bail out if the filesystem is corrupted. */
112 if (last_error == -EFSCORRUPTED) {
128 * Purge a dquot from all tracking data structures and free it.
132 struct xfs_dquot *dqp,
135 struct xfs_mount *mp = dqp->q_mount;
136 struct xfs_quotainfo *qi = mp->m_quotainfo;
139 if ((dqp->dq_flags & XFS_DQ_FREEING) || dqp->q_nrefs != 0) {
144 dqp->dq_flags |= XFS_DQ_FREEING;
149 * If we are turning this type of quotas off, we don't care
150 * about the dirty metadata sitting in this dquot. OTOH, if
151 * we're unmounting, we do care, so we flush it and wait.
153 if (XFS_DQ_IS_DIRTY(dqp)) {
154 struct xfs_buf *bp = NULL;
158 * We don't care about getting disk errors here. We need
159 * to purge this dquot anyway, so we go ahead regardless.
161 error = xfs_qm_dqflush(dqp, &bp);
163 xfs_warn(mp, "%s: dquot %p flush failed",
166 error = xfs_bwrite(bp);
172 ASSERT(atomic_read(&dqp->q_pincount) == 0);
173 ASSERT(XFS_FORCED_SHUTDOWN(mp) ||
174 !(dqp->q_logitem.qli_item.li_flags & XFS_LI_IN_AIL));
179 radix_tree_delete(xfs_dquot_tree(qi, dqp->q_core.d_flags),
180 be32_to_cpu(dqp->q_core.d_id));
184 * We move dquots to the freelist as soon as their reference count
185 * hits zero, so it really should be on the freelist here.
187 ASSERT(!list_empty(&dqp->q_lru));
188 list_lru_del(&qi->qi_lru, &dqp->q_lru);
189 XFS_STATS_DEC(xs_qm_dquot_unused);
191 xfs_qm_dqdestroy(dqp);
196 * Purge the dquot cache.
200 struct xfs_mount *mp,
203 if (flags & XFS_QMOPT_UQUOTA)
204 xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_dqpurge, NULL);
205 if (flags & XFS_QMOPT_GQUOTA)
206 xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_dqpurge, NULL);
207 if (flags & XFS_QMOPT_PQUOTA)
208 xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_dqpurge, NULL);
212 * Just destroy the quotainfo structure.
216 struct xfs_mount *mp)
218 if (mp->m_quotainfo) {
219 xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL);
220 xfs_qm_destroy_quotainfo(mp);
225 * Called from the vfsops layer.
228 xfs_qm_unmount_quotas(
232 * Release the dquots that root inode, et al might be holding,
233 * before we flush quotas and blow away the quotainfo structure.
235 ASSERT(mp->m_rootip);
236 xfs_qm_dqdetach(mp->m_rootip);
238 xfs_qm_dqdetach(mp->m_rbmip);
240 xfs_qm_dqdetach(mp->m_rsumip);
243 * Release the quota inodes.
245 if (mp->m_quotainfo) {
246 if (mp->m_quotainfo->qi_uquotaip) {
247 IRELE(mp->m_quotainfo->qi_uquotaip);
248 mp->m_quotainfo->qi_uquotaip = NULL;
250 if (mp->m_quotainfo->qi_gquotaip) {
251 IRELE(mp->m_quotainfo->qi_gquotaip);
252 mp->m_quotainfo->qi_gquotaip = NULL;
254 if (mp->m_quotainfo->qi_pquotaip) {
255 IRELE(mp->m_quotainfo->qi_pquotaip);
256 mp->m_quotainfo->qi_pquotaip = NULL;
267 xfs_dquot_t **IO_idqpp)
272 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
276 * See if we already have it in the inode itself. IO_idqpp is &i_udquot
277 * or &i_gdquot. This made the code look weird, but made the logic a lot
282 trace_xfs_dqattach_found(dqp);
287 * Find the dquot from somewhere. This bumps the reference count of
288 * dquot and returns it locked. This can return ENOENT if dquot didn't
289 * exist on disk and we didn't ask it to allocate; ESRCH if quotas got
290 * turned off suddenly.
292 error = xfs_qm_dqget(ip->i_mount, ip, id, type,
293 doalloc | XFS_QMOPT_DOWARN, &dqp);
297 trace_xfs_dqattach_get(dqp);
300 * dqget may have dropped and re-acquired the ilock, but it guarantees
301 * that the dquot returned is the one that should go in the inode.
309 xfs_qm_need_dqattach(
310 struct xfs_inode *ip)
312 struct xfs_mount *mp = ip->i_mount;
314 if (!XFS_IS_QUOTA_RUNNING(mp))
316 if (!XFS_IS_QUOTA_ON(mp))
318 if (!XFS_NOT_DQATTACHED(mp, ip))
320 if (xfs_is_quota_inode(&mp->m_sb, ip->i_ino))
326 * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON
328 * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed.
329 * Inode may get unlocked and relocked in here, and the caller must deal with
333 xfs_qm_dqattach_locked(
337 xfs_mount_t *mp = ip->i_mount;
340 if (!xfs_qm_need_dqattach(ip))
343 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
345 if (XFS_IS_UQUOTA_ON(mp) && !ip->i_udquot) {
346 error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER,
347 flags & XFS_QMOPT_DQALLOC,
351 ASSERT(ip->i_udquot);
354 if (XFS_IS_GQUOTA_ON(mp) && !ip->i_gdquot) {
355 error = xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP,
356 flags & XFS_QMOPT_DQALLOC,
360 ASSERT(ip->i_gdquot);
363 if (XFS_IS_PQUOTA_ON(mp) && !ip->i_pdquot) {
364 error = xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ,
365 flags & XFS_QMOPT_DQALLOC,
369 ASSERT(ip->i_pdquot);
374 * Don't worry about the dquots that we may have attached before any
375 * error - they'll get detached later if it has not already been done.
377 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
383 struct xfs_inode *ip,
388 if (!xfs_qm_need_dqattach(ip))
391 xfs_ilock(ip, XFS_ILOCK_EXCL);
392 error = xfs_qm_dqattach_locked(ip, flags);
393 xfs_iunlock(ip, XFS_ILOCK_EXCL);
399 * Release dquots (and their references) if any.
400 * The inode should be locked EXCL except when this's called by
407 if (!(ip->i_udquot || ip->i_gdquot || ip->i_pdquot))
410 trace_xfs_dquot_dqdetach(ip);
412 ASSERT(!xfs_is_quota_inode(&ip->i_mount->m_sb, ip->i_ino));
414 xfs_qm_dqrele(ip->i_udquot);
418 xfs_qm_dqrele(ip->i_gdquot);
422 xfs_qm_dqrele(ip->i_pdquot);
427 struct xfs_qm_isolate {
428 struct list_head buffers;
429 struct list_head dispose;
432 static enum lru_status
433 xfs_qm_dquot_isolate(
434 struct list_head *item,
435 spinlock_t *lru_lock,
438 struct xfs_dquot *dqp = container_of(item,
439 struct xfs_dquot, q_lru);
440 struct xfs_qm_isolate *isol = arg;
442 if (!xfs_dqlock_nowait(dqp))
446 * This dquot has acquired a reference in the meantime remove it from
447 * the freelist and try again.
451 XFS_STATS_INC(xs_qm_dqwants);
453 trace_xfs_dqreclaim_want(dqp);
454 list_del_init(&dqp->q_lru);
455 XFS_STATS_DEC(xs_qm_dquot_unused);
460 * If the dquot is dirty, flush it. If it's already being flushed, just
461 * skip it so there is time for the IO to complete before we try to
462 * reclaim it again on the next LRU pass.
464 if (!xfs_dqflock_nowait(dqp)) {
469 if (XFS_DQ_IS_DIRTY(dqp)) {
470 struct xfs_buf *bp = NULL;
473 trace_xfs_dqreclaim_dirty(dqp);
475 /* we have to drop the LRU lock to flush the dquot */
476 spin_unlock(lru_lock);
478 error = xfs_qm_dqflush(dqp, &bp);
480 xfs_warn(dqp->q_mount, "%s: dquot %p flush failed",
482 goto out_unlock_dirty;
485 xfs_buf_delwri_queue(bp, &isol->buffers);
487 goto out_unlock_dirty;
492 * Prevent lookups now that we are past the point of no return.
494 dqp->dq_flags |= XFS_DQ_FREEING;
497 ASSERT(dqp->q_nrefs == 0);
498 list_move_tail(&dqp->q_lru, &isol->dispose);
499 XFS_STATS_DEC(xs_qm_dquot_unused);
500 trace_xfs_dqreclaim_done(dqp);
501 XFS_STATS_INC(xs_qm_dqreclaims);
505 trace_xfs_dqreclaim_busy(dqp);
506 XFS_STATS_INC(xs_qm_dqreclaim_misses);
510 trace_xfs_dqreclaim_busy(dqp);
511 XFS_STATS_INC(xs_qm_dqreclaim_misses);
519 struct shrinker *shrink,
520 struct shrink_control *sc)
522 struct xfs_quotainfo *qi = container_of(shrink,
523 struct xfs_quotainfo, qi_shrinker);
524 struct xfs_qm_isolate isol;
527 unsigned long nr_to_scan = sc->nr_to_scan;
529 if ((sc->gfp_mask & (__GFP_FS|__GFP_WAIT)) != (__GFP_FS|__GFP_WAIT))
532 INIT_LIST_HEAD(&isol.buffers);
533 INIT_LIST_HEAD(&isol.dispose);
535 freed = list_lru_walk_node(&qi->qi_lru, sc->nid, xfs_qm_dquot_isolate, &isol,
538 error = xfs_buf_delwri_submit(&isol.buffers);
540 xfs_warn(NULL, "%s: dquot reclaim failed", __func__);
542 while (!list_empty(&isol.dispose)) {
543 struct xfs_dquot *dqp;
545 dqp = list_first_entry(&isol.dispose, struct xfs_dquot, q_lru);
546 list_del_init(&dqp->q_lru);
547 xfs_qm_dqfree_one(dqp);
555 struct shrinker *shrink,
556 struct shrink_control *sc)
558 struct xfs_quotainfo *qi = container_of(shrink,
559 struct xfs_quotainfo, qi_shrinker);
561 return list_lru_count_node(&qi->qi_lru, sc->nid);
565 * This initializes all the quota information that's kept in the
569 xfs_qm_init_quotainfo(
572 xfs_quotainfo_t *qinf;
576 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
578 qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP);
580 error = list_lru_init(&qinf->qi_lru);
585 * See if quotainodes are setup, and if not, allocate them,
586 * and change the superblock accordingly.
588 error = xfs_qm_init_quotainos(mp);
592 INIT_RADIX_TREE(&qinf->qi_uquota_tree, GFP_NOFS);
593 INIT_RADIX_TREE(&qinf->qi_gquota_tree, GFP_NOFS);
594 INIT_RADIX_TREE(&qinf->qi_pquota_tree, GFP_NOFS);
595 mutex_init(&qinf->qi_tree_lock);
597 /* mutex used to serialize quotaoffs */
598 mutex_init(&qinf->qi_quotaofflock);
600 /* Precalc some constants */
601 qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB);
602 qinf->qi_dqperchunk = xfs_calc_dquots_per_chunk(qinf->qi_dqchunklen);
604 mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD);
607 * We try to get the limits from the superuser's limits fields.
608 * This is quite hacky, but it is standard quota practice.
610 * We look at the USR dquot with id == 0 first, but if user quotas
611 * are not enabled we goto the GRP dquot with id == 0.
612 * We don't really care to keep separate default limits for user
613 * and group quotas, at least not at this point.
615 * Since we may not have done a quotacheck by this point, just read
616 * the dquot without attaching it to any hashtables or lists.
618 error = xfs_qm_dqread(mp, 0,
619 XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER :
620 (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP :
622 XFS_QMOPT_DOWARN, &dqp);
624 xfs_disk_dquot_t *ddqp = &dqp->q_core;
627 * The warnings and timers set the grace period given to
628 * a user or group before he or she can not perform any
629 * more writing. If it is zero, a default is used.
631 qinf->qi_btimelimit = ddqp->d_btimer ?
632 be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT;
633 qinf->qi_itimelimit = ddqp->d_itimer ?
634 be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT;
635 qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ?
636 be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT;
637 qinf->qi_bwarnlimit = ddqp->d_bwarns ?
638 be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT;
639 qinf->qi_iwarnlimit = ddqp->d_iwarns ?
640 be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT;
641 qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ?
642 be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT;
643 qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit);
644 qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit);
645 qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit);
646 qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit);
647 qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit);
648 qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit);
650 xfs_qm_dqdestroy(dqp);
652 qinf->qi_btimelimit = XFS_QM_BTIMELIMIT;
653 qinf->qi_itimelimit = XFS_QM_ITIMELIMIT;
654 qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT;
655 qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT;
656 qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT;
657 qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT;
660 qinf->qi_shrinker.count_objects = xfs_qm_shrink_count;
661 qinf->qi_shrinker.scan_objects = xfs_qm_shrink_scan;
662 qinf->qi_shrinker.seeks = DEFAULT_SEEKS;
663 qinf->qi_shrinker.flags = SHRINKER_NUMA_AWARE;
664 register_shrinker(&qinf->qi_shrinker);
668 list_lru_destroy(&qinf->qi_lru);
671 mp->m_quotainfo = NULL;
677 * Gets called when unmounting a filesystem or when all quotas get
679 * This purges the quota inodes, destroys locks and frees itself.
682 xfs_qm_destroy_quotainfo(
687 qi = mp->m_quotainfo;
690 unregister_shrinker(&qi->qi_shrinker);
691 list_lru_destroy(&qi->qi_lru);
693 if (qi->qi_uquotaip) {
694 IRELE(qi->qi_uquotaip);
695 qi->qi_uquotaip = NULL; /* paranoia */
697 if (qi->qi_gquotaip) {
698 IRELE(qi->qi_gquotaip);
699 qi->qi_gquotaip = NULL;
701 if (qi->qi_pquotaip) {
702 IRELE(qi->qi_pquotaip);
703 qi->qi_pquotaip = NULL;
705 mutex_destroy(&qi->qi_quotaofflock);
707 mp->m_quotainfo = NULL;
711 * Create an inode and return with a reference already taken, but unlocked
712 * This is how we create quota inodes
727 * With superblock that doesn't have separate pquotino, we
728 * share an inode between gquota and pquota. If the on-disk
729 * superblock has GQUOTA and the filesystem is now mounted
730 * with PQUOTA, just use sb_gquotino for sb_pquotino and
733 if (!xfs_sb_version_has_pquotino(&mp->m_sb) &&
734 (flags & (XFS_QMOPT_PQUOTA|XFS_QMOPT_GQUOTA))) {
735 xfs_ino_t ino = NULLFSINO;
737 if ((flags & XFS_QMOPT_PQUOTA) &&
738 (mp->m_sb.sb_gquotino != NULLFSINO)) {
739 ino = mp->m_sb.sb_gquotino;
740 ASSERT(mp->m_sb.sb_pquotino == NULLFSINO);
741 } else if ((flags & XFS_QMOPT_GQUOTA) &&
742 (mp->m_sb.sb_pquotino != NULLFSINO)) {
743 ino = mp->m_sb.sb_pquotino;
744 ASSERT(mp->m_sb.sb_gquotino == NULLFSINO);
746 if (ino != NULLFSINO) {
747 error = xfs_iget(mp, NULL, ino, 0, 0, ip);
750 mp->m_sb.sb_gquotino = NULLFSINO;
751 mp->m_sb.sb_pquotino = NULLFSINO;
755 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE);
756 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_create,
757 XFS_QM_QINOCREATE_SPACE_RES(mp), 0);
759 xfs_trans_cancel(tp, 0);
764 error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip,
767 xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES |
774 * Make the changes in the superblock, and log those too.
775 * sbfields arg may contain fields other than *QUOTINO;
776 * VERSIONNUM for example.
778 spin_lock(&mp->m_sb_lock);
779 if (flags & XFS_QMOPT_SBVERSION) {
780 ASSERT(!xfs_sb_version_hasquota(&mp->m_sb));
781 ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO |
782 XFS_SB_GQUOTINO | XFS_SB_PQUOTINO | XFS_SB_QFLAGS)) ==
783 (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO |
784 XFS_SB_GQUOTINO | XFS_SB_PQUOTINO |
787 xfs_sb_version_addquota(&mp->m_sb);
788 mp->m_sb.sb_uquotino = NULLFSINO;
789 mp->m_sb.sb_gquotino = NULLFSINO;
790 mp->m_sb.sb_pquotino = NULLFSINO;
792 /* qflags will get updated fully _after_ quotacheck */
793 mp->m_sb.sb_qflags = mp->m_qflags & XFS_ALL_QUOTA_ACCT;
795 if (flags & XFS_QMOPT_UQUOTA)
796 mp->m_sb.sb_uquotino = (*ip)->i_ino;
797 else if (flags & XFS_QMOPT_GQUOTA)
798 mp->m_sb.sb_gquotino = (*ip)->i_ino;
800 mp->m_sb.sb_pquotino = (*ip)->i_ino;
801 spin_unlock(&mp->m_sb_lock);
802 xfs_mod_sb(tp, sbfields);
804 if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) {
805 xfs_alert(mp, "%s failed (error %d)!", __func__, error);
813 xfs_qm_reset_dqcounts(
819 struct xfs_dqblk *dqb;
822 trace_xfs_reset_dqcounts(bp, _RET_IP_);
825 * Reset all counters and timers. They'll be
826 * started afresh by xfs_qm_quotacheck.
829 j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB);
830 do_div(j, sizeof(xfs_dqblk_t));
831 ASSERT(mp->m_quotainfo->qi_dqperchunk == j);
834 for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) {
835 struct xfs_disk_dquot *ddq;
837 ddq = (struct xfs_disk_dquot *)&dqb[j];
840 * Do a sanity check, and if needed, repair the dqblk. Don't
841 * output any warnings because it's perfectly possible to
842 * find uninitialised dquot blks. See comment in xfs_dqcheck.
844 xfs_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR,
856 if (xfs_sb_version_hascrc(&mp->m_sb)) {
857 xfs_update_cksum((char *)&dqb[j],
858 sizeof(struct xfs_dqblk),
866 struct xfs_mount *mp,
869 xfs_filblks_t blkcnt,
871 struct list_head *buffer_list)
878 type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER :
879 (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP);
883 * Blkcnt arg can be a very big number, and might even be
884 * larger than the log itself. So, we have to break it up into
885 * manageable-sized transactions.
886 * Note that we don't start a permanent transaction here; we might
887 * not be able to get a log reservation for the whole thing up front,
888 * and we don't really care to either, because we just discard
889 * everything if we were to crash in the middle of this loop.
892 error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp,
893 XFS_FSB_TO_DADDR(mp, bno),
894 mp->m_quotainfo->qi_dqchunklen, 0, &bp,
898 * CRC and validation errors will return a EFSCORRUPTED here. If
899 * this occurs, re-read without CRC validation so that we can
900 * repair the damage via xfs_qm_reset_dqcounts(). This process
901 * will leave a trace in the log indicating corruption has
904 if (error == -EFSCORRUPTED) {
905 error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp,
906 XFS_FSB_TO_DADDR(mp, bno),
907 mp->m_quotainfo->qi_dqchunklen, 0, &bp,
915 * A corrupt buffer might not have a verifier attached, so
916 * make sure we have the correct one attached before writeback
919 bp->b_ops = &xfs_dquot_buf_ops;
920 xfs_qm_reset_dqcounts(mp, bp, firstid, type);
921 xfs_buf_delwri_queue(bp, buffer_list);
924 /* goto the next block. */
926 firstid += mp->m_quotainfo->qi_dqperchunk;
933 * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a
934 * caller supplied function for every chunk of dquots that we find.
938 struct xfs_mount *mp,
939 struct xfs_inode *qip,
941 struct list_head *buffer_list)
943 struct xfs_bmbt_irec *map;
944 int i, nmaps; /* number of map entries */
945 int error; /* return value */
946 xfs_fileoff_t lblkno;
947 xfs_filblks_t maxlblkcnt;
949 xfs_fsblock_t rablkno;
950 xfs_filblks_t rablkcnt;
954 * This looks racy, but we can't keep an inode lock across a
955 * trans_reserve. But, this gets called during quotacheck, and that
956 * happens only at mount time which is single threaded.
958 if (qip->i_d.di_nblocks == 0)
961 map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP);
964 maxlblkcnt = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes);
968 nmaps = XFS_DQITER_MAP_SIZE;
970 * We aren't changing the inode itself. Just changing
971 * some of its data. No new blocks are added here, and
972 * the inode is never added to the transaction.
974 lock_mode = xfs_ilock_data_map_shared(qip);
975 error = xfs_bmapi_read(qip, lblkno, maxlblkcnt - lblkno,
977 xfs_iunlock(qip, lock_mode);
981 ASSERT(nmaps <= XFS_DQITER_MAP_SIZE);
982 for (i = 0; i < nmaps; i++) {
983 ASSERT(map[i].br_startblock != DELAYSTARTBLOCK);
984 ASSERT(map[i].br_blockcount);
987 lblkno += map[i].br_blockcount;
989 if (map[i].br_startblock == HOLESTARTBLOCK)
992 firstid = (xfs_dqid_t) map[i].br_startoff *
993 mp->m_quotainfo->qi_dqperchunk;
995 * Do a read-ahead on the next extent.
998 (map[i+1].br_startblock != HOLESTARTBLOCK)) {
999 rablkcnt = map[i+1].br_blockcount;
1000 rablkno = map[i+1].br_startblock;
1001 while (rablkcnt--) {
1002 xfs_buf_readahead(mp->m_ddev_targp,
1003 XFS_FSB_TO_DADDR(mp, rablkno),
1004 mp->m_quotainfo->qi_dqchunklen,
1005 &xfs_dquot_buf_ops);
1010 * Iterate thru all the blks in the extent and
1011 * reset the counters of all the dquots inside them.
1013 error = xfs_qm_dqiter_bufs(mp, firstid,
1014 map[i].br_startblock,
1015 map[i].br_blockcount,
1016 flags, buffer_list);
1020 } while (nmaps > 0);
1028 * Called by dqusage_adjust in doing a quotacheck.
1030 * Given the inode, and a dquot id this updates both the incore dqout as well
1031 * as the buffer copy. This is so that once the quotacheck is done, we can
1032 * just log all the buffers, as opposed to logging numerous updates to
1033 * individual dquots.
1036 xfs_qm_quotacheck_dqadjust(
1037 struct xfs_inode *ip,
1043 struct xfs_mount *mp = ip->i_mount;
1044 struct xfs_dquot *dqp;
1047 error = xfs_qm_dqget(mp, ip, id, type,
1048 XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp);
1051 * Shouldn't be able to turn off quotas here.
1053 ASSERT(error != -ESRCH);
1054 ASSERT(error != -ENOENT);
1058 trace_xfs_dqadjust(dqp);
1061 * Adjust the inode count and the block count to reflect this inode's
1064 be64_add_cpu(&dqp->q_core.d_icount, 1);
1065 dqp->q_res_icount++;
1067 be64_add_cpu(&dqp->q_core.d_bcount, nblks);
1068 dqp->q_res_bcount += nblks;
1071 be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks);
1072 dqp->q_res_rtbcount += rtblks;
1076 * Set default limits, adjust timers (since we changed usages)
1078 * There are no timers for the default values set in the root dquot.
1080 if (dqp->q_core.d_id) {
1081 xfs_qm_adjust_dqlimits(mp, dqp);
1082 xfs_qm_adjust_dqtimers(mp, &dqp->q_core);
1085 dqp->dq_flags |= XFS_DQ_DIRTY;
1093 xfs_qcnt_t *O_rtblks)
1095 xfs_filblks_t rtblks; /* total rt blks */
1096 xfs_extnum_t idx; /* extent record index */
1097 xfs_ifork_t *ifp; /* inode fork pointer */
1098 xfs_extnum_t nextents; /* number of extent entries */
1101 ASSERT(XFS_IS_REALTIME_INODE(ip));
1102 ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK);
1103 if (!(ifp->if_flags & XFS_IFEXTENTS)) {
1104 if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK)))
1108 nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
1109 for (idx = 0; idx < nextents; idx++)
1110 rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx));
1111 *O_rtblks = (xfs_qcnt_t)rtblks;
1116 * callback routine supplied to bulkstat(). Given an inumber, find its
1117 * dquots and update them to account for resources taken by that inode.
1121 xfs_qm_dqusage_adjust(
1122 xfs_mount_t *mp, /* mount point for filesystem */
1123 xfs_ino_t ino, /* inode number to get data for */
1124 void __user *buffer, /* not used */
1125 int ubsize, /* not used */
1126 int *ubused, /* not used */
1127 int *res) /* result code value */
1130 xfs_qcnt_t nblks, rtblks = 0;
1133 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1136 * rootino must have its resources accounted for, not so with the quota
1139 if (xfs_is_quota_inode(&mp->m_sb, ino)) {
1140 *res = BULKSTAT_RV_NOTHING;
1145 * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget
1146 * interface expects the inode to be exclusively locked because that's
1147 * the case in all other instances. It's OK that we do this because
1148 * quotacheck is done only at mount time.
1150 error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip);
1152 *res = BULKSTAT_RV_NOTHING;
1156 ASSERT(ip->i_delayed_blks == 0);
1158 if (XFS_IS_REALTIME_INODE(ip)) {
1160 * Walk thru the extent list and count the realtime blocks.
1162 error = xfs_qm_get_rtblks(ip, &rtblks);
1167 nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks;
1170 * Add the (disk blocks and inode) resources occupied by this
1171 * inode to its dquots. We do this adjustment in the incore dquot,
1172 * and also copy the changes to its buffer.
1173 * We don't care about putting these changes in a transaction
1174 * envelope because if we crash in the middle of a 'quotacheck'
1175 * we have to start from the beginning anyway.
1176 * Once we're done, we'll log all the dquot bufs.
1178 * The *QUOTA_ON checks below may look pretty racy, but quotachecks
1179 * and quotaoffs don't race. (Quotachecks happen at mount time only).
1181 if (XFS_IS_UQUOTA_ON(mp)) {
1182 error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid,
1183 XFS_DQ_USER, nblks, rtblks);
1188 if (XFS_IS_GQUOTA_ON(mp)) {
1189 error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid,
1190 XFS_DQ_GROUP, nblks, rtblks);
1195 if (XFS_IS_PQUOTA_ON(mp)) {
1196 error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip),
1197 XFS_DQ_PROJ, nblks, rtblks);
1202 xfs_iunlock(ip, XFS_ILOCK_EXCL);
1204 *res = BULKSTAT_RV_DIDONE;
1208 xfs_iunlock(ip, XFS_ILOCK_EXCL);
1210 *res = BULKSTAT_RV_GIVEUP;
1216 struct xfs_dquot *dqp,
1219 struct list_head *buffer_list = data;
1220 struct xfs_buf *bp = NULL;
1224 if (dqp->dq_flags & XFS_DQ_FREEING)
1226 if (!XFS_DQ_IS_DIRTY(dqp))
1230 error = xfs_qm_dqflush(dqp, &bp);
1234 xfs_buf_delwri_queue(bp, buffer_list);
1242 * Walk thru all the filesystem inodes and construct a consistent view
1243 * of the disk quota world. If the quotacheck fails, disable quotas.
1249 int done, count, error, error2;
1253 LIST_HEAD (buffer_list);
1254 struct xfs_inode *uip = mp->m_quotainfo->qi_uquotaip;
1255 struct xfs_inode *gip = mp->m_quotainfo->qi_gquotaip;
1256 struct xfs_inode *pip = mp->m_quotainfo->qi_pquotaip;
1263 ASSERT(uip || gip || pip);
1264 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1266 xfs_notice(mp, "Quotacheck needed: Please wait.");
1269 * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset
1270 * their counters to zero. We need a clean slate.
1271 * We don't log our changes till later.
1274 error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA,
1278 flags |= XFS_UQUOTA_CHKD;
1282 error = xfs_qm_dqiterate(mp, gip, XFS_QMOPT_GQUOTA,
1286 flags |= XFS_GQUOTA_CHKD;
1290 error = xfs_qm_dqiterate(mp, pip, XFS_QMOPT_PQUOTA,
1294 flags |= XFS_PQUOTA_CHKD;
1299 * Iterate thru all the inodes in the file system,
1300 * adjusting the corresponding dquot counters in core.
1302 error = xfs_bulkstat(mp, &lastino, &count,
1303 xfs_qm_dqusage_adjust,
1304 structsz, NULL, &done);
1311 * We've made all the changes that we need to make incore. Flush them
1312 * down to disk buffers if everything was updated successfully.
1314 if (XFS_IS_UQUOTA_ON(mp)) {
1315 error = xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_flush_one,
1318 if (XFS_IS_GQUOTA_ON(mp)) {
1319 error2 = xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_flush_one,
1324 if (XFS_IS_PQUOTA_ON(mp)) {
1325 error2 = xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_flush_one,
1331 error2 = xfs_buf_delwri_submit(&buffer_list);
1336 * We can get this error if we couldn't do a dquot allocation inside
1337 * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the
1338 * dirty dquots that might be cached, we just want to get rid of them
1339 * and turn quotaoff. The dquots won't be attached to any of the inodes
1340 * at this point (because we intentionally didn't in dqget_noattach).
1343 xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL);
1348 * If one type of quotas is off, then it will lose its
1349 * quotachecked status, since we won't be doing accounting for
1350 * that type anymore.
1352 mp->m_qflags &= ~XFS_ALL_QUOTA_CHKD;
1353 mp->m_qflags |= flags;
1356 while (!list_empty(&buffer_list)) {
1357 struct xfs_buf *bp =
1358 list_first_entry(&buffer_list, struct xfs_buf, b_list);
1359 list_del_init(&bp->b_list);
1365 "Quotacheck: Unsuccessful (Error %d): Disabling quotas.",
1368 * We must turn off quotas.
1370 ASSERT(mp->m_quotainfo != NULL);
1371 xfs_qm_destroy_quotainfo(mp);
1372 if (xfs_mount_reset_sbqflags(mp)) {
1374 "Quotacheck: Failed to reset quota flags.");
1377 xfs_notice(mp, "Quotacheck: Done.");
1382 * This is called from xfs_mountfs to start quotas and initialize all
1383 * necessary data structures like quotainfo. This is also responsible for
1384 * running a quotacheck as necessary. We are guaranteed that the superblock
1385 * is consistently read in at this point.
1387 * If we fail here, the mount will continue with quota turned off. We don't
1388 * need to inidicate success or failure at all.
1391 xfs_qm_mount_quotas(
1392 struct xfs_mount *mp)
1398 * If quotas on realtime volumes is not supported, we disable
1399 * quotas immediately.
1401 if (mp->m_sb.sb_rextents) {
1402 xfs_notice(mp, "Cannot turn on quotas for realtime filesystem");
1407 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1410 * Allocate the quotainfo structure inside the mount struct, and
1411 * create quotainode(s), and change/rev superblock if necessary.
1413 error = xfs_qm_init_quotainfo(mp);
1416 * We must turn off quotas.
1418 ASSERT(mp->m_quotainfo == NULL);
1423 * If any of the quotas are not consistent, do a quotacheck.
1425 if (XFS_QM_NEED_QUOTACHECK(mp)) {
1426 error = xfs_qm_quotacheck(mp);
1428 /* Quotacheck failed and disabled quotas. */
1433 * If one type of quotas is off, then it will lose its
1434 * quotachecked status, since we won't be doing accounting for
1435 * that type anymore.
1437 if (!XFS_IS_UQUOTA_ON(mp))
1438 mp->m_qflags &= ~XFS_UQUOTA_CHKD;
1439 if (!XFS_IS_GQUOTA_ON(mp))
1440 mp->m_qflags &= ~XFS_GQUOTA_CHKD;
1441 if (!XFS_IS_PQUOTA_ON(mp))
1442 mp->m_qflags &= ~XFS_PQUOTA_CHKD;
1446 * We actually don't have to acquire the m_sb_lock at all.
1447 * This can only be called from mount, and that's single threaded. XXX
1449 spin_lock(&mp->m_sb_lock);
1450 sbf = mp->m_sb.sb_qflags;
1451 mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL;
1452 spin_unlock(&mp->m_sb_lock);
1454 if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) {
1455 if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) {
1457 * We could only have been turning quotas off.
1458 * We aren't in very good shape actually because
1459 * the incore structures are convinced that quotas are
1460 * off, but the on disk superblock doesn't know that !
1462 ASSERT(!(XFS_IS_QUOTA_RUNNING(mp)));
1463 xfs_alert(mp, "%s: Superblock update failed!",
1469 xfs_warn(mp, "Failed to initialize disk quotas.");
1475 * This is called after the superblock has been read in and we're ready to
1476 * iget the quota inodes.
1479 xfs_qm_init_quotainos(
1482 struct xfs_inode *uip = NULL;
1483 struct xfs_inode *gip = NULL;
1484 struct xfs_inode *pip = NULL;
1486 __int64_t sbflags = 0;
1489 ASSERT(mp->m_quotainfo);
1492 * Get the uquota and gquota inodes
1494 if (xfs_sb_version_hasquota(&mp->m_sb)) {
1495 if (XFS_IS_UQUOTA_ON(mp) &&
1496 mp->m_sb.sb_uquotino != NULLFSINO) {
1497 ASSERT(mp->m_sb.sb_uquotino > 0);
1498 error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
1503 if (XFS_IS_GQUOTA_ON(mp) &&
1504 mp->m_sb.sb_gquotino != NULLFSINO) {
1505 ASSERT(mp->m_sb.sb_gquotino > 0);
1506 error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
1511 if (XFS_IS_PQUOTA_ON(mp) &&
1512 mp->m_sb.sb_pquotino != NULLFSINO) {
1513 ASSERT(mp->m_sb.sb_pquotino > 0);
1514 error = xfs_iget(mp, NULL, mp->m_sb.sb_pquotino,
1520 flags |= XFS_QMOPT_SBVERSION;
1521 sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO |
1522 XFS_SB_GQUOTINO | XFS_SB_PQUOTINO |
1527 * Create the three inodes, if they don't exist already. The changes
1528 * made above will get added to a transaction and logged in one of
1529 * the qino_alloc calls below. If the device is readonly,
1530 * temporarily switch to read-write to do this.
1532 if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) {
1533 error = xfs_qm_qino_alloc(mp, &uip,
1534 sbflags | XFS_SB_UQUOTINO,
1535 flags | XFS_QMOPT_UQUOTA);
1539 flags &= ~XFS_QMOPT_SBVERSION;
1541 if (XFS_IS_GQUOTA_ON(mp) && gip == NULL) {
1542 error = xfs_qm_qino_alloc(mp, &gip,
1543 sbflags | XFS_SB_GQUOTINO,
1544 flags | XFS_QMOPT_GQUOTA);
1548 flags &= ~XFS_QMOPT_SBVERSION;
1550 if (XFS_IS_PQUOTA_ON(mp) && pip == NULL) {
1551 error = xfs_qm_qino_alloc(mp, &pip,
1552 sbflags | XFS_SB_PQUOTINO,
1553 flags | XFS_QMOPT_PQUOTA);
1558 mp->m_quotainfo->qi_uquotaip = uip;
1559 mp->m_quotainfo->qi_gquotaip = gip;
1560 mp->m_quotainfo->qi_pquotaip = pip;
1576 struct xfs_dquot *dqp)
1578 struct xfs_mount *mp = dqp->q_mount;
1579 struct xfs_quotainfo *qi = mp->m_quotainfo;
1581 mutex_lock(&qi->qi_tree_lock);
1582 radix_tree_delete(xfs_dquot_tree(qi, dqp->q_core.d_flags),
1583 be32_to_cpu(dqp->q_core.d_id));
1586 mutex_unlock(&qi->qi_tree_lock);
1588 xfs_qm_dqdestroy(dqp);
1592 * Start a transaction and write the incore superblock changes to
1593 * disk. flags parameter indicates which fields have changed.
1596 xfs_qm_write_sb_changes(
1603 tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE);
1604 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_sbchange, 0, 0);
1606 xfs_trans_cancel(tp, 0);
1610 xfs_mod_sb(tp, flags);
1611 error = xfs_trans_commit(tp, 0);
1617 /* --------------- utility functions for vnodeops ---------------- */
1621 * Given an inode, a uid, gid and prid make sure that we have
1622 * allocated relevant dquot(s) on disk, and that we won't exceed inode
1623 * quotas by creating this file.
1624 * This also attaches dquot(s) to the given inode after locking it,
1625 * and returns the dquots corresponding to the uid and/or gid.
1627 * in : inode (unlocked)
1628 * out : udquot, gdquot with references taken and unlocked
1632 struct xfs_inode *ip,
1637 struct xfs_dquot **O_udqpp,
1638 struct xfs_dquot **O_gdqpp,
1639 struct xfs_dquot **O_pdqpp)
1641 struct xfs_mount *mp = ip->i_mount;
1642 struct xfs_dquot *uq = NULL;
1643 struct xfs_dquot *gq = NULL;
1644 struct xfs_dquot *pq = NULL;
1648 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
1651 lockflags = XFS_ILOCK_EXCL;
1652 xfs_ilock(ip, lockflags);
1654 if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip))
1655 gid = ip->i_d.di_gid;
1658 * Attach the dquot(s) to this inode, doing a dquot allocation
1659 * if necessary. The dquot(s) will not be locked.
1661 if (XFS_NOT_DQATTACHED(mp, ip)) {
1662 error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC);
1664 xfs_iunlock(ip, lockflags);
1669 if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) {
1670 if (ip->i_d.di_uid != uid) {
1672 * What we need is the dquot that has this uid, and
1673 * if we send the inode to dqget, the uid of the inode
1674 * takes priority over what's sent in the uid argument.
1675 * We must unlock inode here before calling dqget if
1676 * we're not sending the inode, because otherwise
1677 * we'll deadlock by doing trans_reserve while
1680 xfs_iunlock(ip, lockflags);
1681 error = xfs_qm_dqget(mp, NULL, uid,
1687 ASSERT(error != -ENOENT);
1691 * Get the ilock in the right order.
1694 lockflags = XFS_ILOCK_SHARED;
1695 xfs_ilock(ip, lockflags);
1698 * Take an extra reference, because we'll return
1701 ASSERT(ip->i_udquot);
1702 uq = xfs_qm_dqhold(ip->i_udquot);
1705 if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) {
1706 if (ip->i_d.di_gid != gid) {
1707 xfs_iunlock(ip, lockflags);
1708 error = xfs_qm_dqget(mp, NULL, gid,
1714 ASSERT(error != -ENOENT);
1718 lockflags = XFS_ILOCK_SHARED;
1719 xfs_ilock(ip, lockflags);
1721 ASSERT(ip->i_gdquot);
1722 gq = xfs_qm_dqhold(ip->i_gdquot);
1725 if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) {
1726 if (xfs_get_projid(ip) != prid) {
1727 xfs_iunlock(ip, lockflags);
1728 error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid,
1734 ASSERT(error != -ENOENT);
1738 lockflags = XFS_ILOCK_SHARED;
1739 xfs_ilock(ip, lockflags);
1741 ASSERT(ip->i_pdquot);
1742 pq = xfs_qm_dqhold(ip->i_pdquot);
1746 trace_xfs_dquot_dqalloc(ip);
1748 xfs_iunlock(ip, lockflags);
1772 * Actually transfer ownership, and do dquot modifications.
1773 * These were already reserved.
1779 xfs_dquot_t **IO_olddq,
1782 xfs_dquot_t *prevdq;
1783 uint bfield = XFS_IS_REALTIME_INODE(ip) ?
1784 XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT;
1787 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
1788 ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount));
1793 ASSERT(prevdq != newdq);
1795 xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks));
1796 xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1);
1798 /* the sparkling new dquot */
1799 xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks);
1800 xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1);
1803 * Take an extra reference, because the inode is going to keep
1804 * this dquot pointer even after the trans_commit.
1806 *IO_olddq = xfs_qm_dqhold(newdq);
1812 * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID).
1815 xfs_qm_vop_chown_reserve(
1816 struct xfs_trans *tp,
1817 struct xfs_inode *ip,
1818 struct xfs_dquot *udqp,
1819 struct xfs_dquot *gdqp,
1820 struct xfs_dquot *pdqp,
1823 struct xfs_mount *mp = ip->i_mount;
1824 uint delblks, blkflags, prjflags = 0;
1825 struct xfs_dquot *udq_unres = NULL;
1826 struct xfs_dquot *gdq_unres = NULL;
1827 struct xfs_dquot *pdq_unres = NULL;
1828 struct xfs_dquot *udq_delblks = NULL;
1829 struct xfs_dquot *gdq_delblks = NULL;
1830 struct xfs_dquot *pdq_delblks = NULL;
1834 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED));
1835 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1837 delblks = ip->i_delayed_blks;
1838 blkflags = XFS_IS_REALTIME_INODE(ip) ?
1839 XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS;
1841 if (XFS_IS_UQUOTA_ON(mp) && udqp &&
1842 ip->i_d.di_uid != be32_to_cpu(udqp->q_core.d_id)) {
1845 * If there are delayed allocation blocks, then we have to
1846 * unreserve those from the old dquot, and add them to the
1850 ASSERT(ip->i_udquot);
1851 udq_unres = ip->i_udquot;
1854 if (XFS_IS_GQUOTA_ON(ip->i_mount) && gdqp &&
1855 ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id)) {
1858 ASSERT(ip->i_gdquot);
1859 gdq_unres = ip->i_gdquot;
1863 if (XFS_IS_PQUOTA_ON(ip->i_mount) && pdqp &&
1864 xfs_get_projid(ip) != be32_to_cpu(pdqp->q_core.d_id)) {
1865 prjflags = XFS_QMOPT_ENOSPC;
1868 ASSERT(ip->i_pdquot);
1869 pdq_unres = ip->i_pdquot;
1873 error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount,
1874 udq_delblks, gdq_delblks, pdq_delblks,
1875 ip->i_d.di_nblocks, 1,
1876 flags | blkflags | prjflags);
1881 * Do the delayed blks reservations/unreservations now. Since, these
1882 * are done without the help of a transaction, if a reservation fails
1883 * its previous reservations won't be automatically undone by trans
1884 * code. So, we have to do it manually here.
1888 * Do the reservations first. Unreservation can't fail.
1890 ASSERT(udq_delblks || gdq_delblks || pdq_delblks);
1891 ASSERT(udq_unres || gdq_unres || pdq_unres);
1892 error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount,
1893 udq_delblks, gdq_delblks, pdq_delblks,
1894 (xfs_qcnt_t)delblks, 0,
1895 flags | blkflags | prjflags);
1898 xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount,
1899 udq_unres, gdq_unres, pdq_unres,
1900 -((xfs_qcnt_t)delblks), 0, blkflags);
1907 xfs_qm_vop_rename_dqattach(
1908 struct xfs_inode **i_tab)
1910 struct xfs_mount *mp = i_tab[0]->i_mount;
1913 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
1916 for (i = 0; (i < 4 && i_tab[i]); i++) {
1917 struct xfs_inode *ip = i_tab[i];
1921 * Watch out for duplicate entries in the table.
1923 if (i == 0 || ip != i_tab[i-1]) {
1924 if (XFS_NOT_DQATTACHED(mp, ip)) {
1925 error = xfs_qm_dqattach(ip, 0);
1935 xfs_qm_vop_create_dqattach(
1936 struct xfs_trans *tp,
1937 struct xfs_inode *ip,
1938 struct xfs_dquot *udqp,
1939 struct xfs_dquot *gdqp,
1940 struct xfs_dquot *pdqp)
1942 struct xfs_mount *mp = tp->t_mountp;
1944 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
1947 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
1948 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1950 if (udqp && XFS_IS_UQUOTA_ON(mp)) {
1951 ASSERT(ip->i_udquot == NULL);
1952 ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id));
1954 ip->i_udquot = xfs_qm_dqhold(udqp);
1955 xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1);
1957 if (gdqp && XFS_IS_GQUOTA_ON(mp)) {
1958 ASSERT(ip->i_gdquot == NULL);
1959 ASSERT(ip->i_d.di_gid == be32_to_cpu(gdqp->q_core.d_id));
1960 ip->i_gdquot = xfs_qm_dqhold(gdqp);
1961 xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1);
1963 if (pdqp && XFS_IS_PQUOTA_ON(mp)) {
1964 ASSERT(ip->i_pdquot == NULL);
1965 ASSERT(xfs_get_projid(ip) == be32_to_cpu(pdqp->q_core.d_id));
1967 ip->i_pdquot = xfs_qm_dqhold(pdqp);
1968 xfs_trans_mod_dquot(tp, pdqp, XFS_TRANS_DQ_ICOUNT, 1);