1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
8 #include "xfs_shared.h"
9 #include "xfs_format.h"
10 #include "xfs_log_format.h"
11 #include "xfs_trans_resv.h"
14 #include "xfs_mount.h"
15 #include "xfs_inode.h"
16 #include "xfs_iwalk.h"
17 #include "xfs_quota.h"
19 #include "xfs_bmap_util.h"
20 #include "xfs_trans.h"
21 #include "xfs_trans_space.h"
23 #include "xfs_trace.h"
24 #include "xfs_icache.h"
25 #include "xfs_error.h"
28 * The global quota manager. There is only one of these for the entire
29 * system, _not_ one per file system. XQM keeps track of the overall
30 * quota functionality, including maintaining the freelist and hash
33 STATIC int xfs_qm_init_quotainos(struct xfs_mount *mp);
34 STATIC int xfs_qm_init_quotainfo(struct xfs_mount *mp);
36 STATIC void xfs_qm_destroy_quotainos(struct xfs_quotainfo *qi);
37 STATIC void xfs_qm_dqfree_one(struct xfs_dquot *dqp);
39 * We use the batch lookup interface to iterate over the dquots as it
40 * currently is the only interface into the radix tree code that allows
41 * fuzzy lookups instead of exact matches. Holding the lock over multiple
42 * operations is fine as all callers are used either during mount/umount
45 #define XFS_DQ_LOOKUP_BATCH 32
51 int (*execute)(struct xfs_dquot *dqp, void *data),
54 struct xfs_quotainfo *qi = mp->m_quotainfo;
55 struct radix_tree_root *tree = xfs_dquot_tree(qi, type);
67 struct xfs_dquot *batch[XFS_DQ_LOOKUP_BATCH];
71 mutex_lock(&qi->qi_tree_lock);
72 nr_found = radix_tree_gang_lookup(tree, (void **)batch,
73 next_index, XFS_DQ_LOOKUP_BATCH);
75 mutex_unlock(&qi->qi_tree_lock);
79 for (i = 0; i < nr_found; i++) {
80 struct xfs_dquot *dqp = batch[i];
82 next_index = be32_to_cpu(dqp->q_core.d_id) + 1;
84 error = execute(batch[i], data);
85 if (error == -EAGAIN) {
89 if (error && last_error != -EFSCORRUPTED)
93 mutex_unlock(&qi->qi_tree_lock);
95 /* bail out if the filesystem is corrupted. */
96 if (last_error == -EFSCORRUPTED) {
100 /* we're done if id overflows back to zero */
115 * Purge a dquot from all tracking data structures and free it.
119 struct xfs_dquot *dqp,
122 struct xfs_mount *mp = dqp->q_mount;
123 struct xfs_quotainfo *qi = mp->m_quotainfo;
127 if ((dqp->dq_flags & XFS_DQ_FREEING) || dqp->q_nrefs != 0)
130 dqp->dq_flags |= XFS_DQ_FREEING;
135 * If we are turning this type of quotas off, we don't care
136 * about the dirty metadata sitting in this dquot. OTOH, if
137 * we're unmounting, we do care, so we flush it and wait.
139 if (XFS_DQ_IS_DIRTY(dqp)) {
140 struct xfs_buf *bp = NULL;
143 * We don't care about getting disk errors here. We need
144 * to purge this dquot anyway, so we go ahead regardless.
146 error = xfs_qm_dqflush(dqp, &bp);
148 error = xfs_bwrite(bp);
150 } else if (error == -EAGAIN) {
156 ASSERT(atomic_read(&dqp->q_pincount) == 0);
157 ASSERT(XFS_FORCED_SHUTDOWN(mp) ||
158 !test_bit(XFS_LI_IN_AIL, &dqp->q_logitem.qli_item.li_flags));
163 radix_tree_delete(xfs_dquot_tree(qi, dqp->q_core.d_flags),
164 be32_to_cpu(dqp->q_core.d_id));
168 * We move dquots to the freelist as soon as their reference count
169 * hits zero, so it really should be on the freelist here.
171 ASSERT(!list_empty(&dqp->q_lru));
172 list_lru_del(&qi->qi_lru, &dqp->q_lru);
173 XFS_STATS_DEC(mp, xs_qm_dquot_unused);
175 xfs_qm_dqdestroy(dqp);
184 * Purge the dquot cache.
188 struct xfs_mount *mp,
191 if (flags & XFS_QMOPT_UQUOTA)
192 xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_dqpurge, NULL);
193 if (flags & XFS_QMOPT_GQUOTA)
194 xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_dqpurge, NULL);
195 if (flags & XFS_QMOPT_PQUOTA)
196 xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_dqpurge, NULL);
200 * Just destroy the quotainfo structure.
204 struct xfs_mount *mp)
206 if (mp->m_quotainfo) {
207 xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL);
208 xfs_qm_destroy_quotainfo(mp);
213 * Called from the vfsops layer.
216 xfs_qm_unmount_quotas(
220 * Release the dquots that root inode, et al might be holding,
221 * before we flush quotas and blow away the quotainfo structure.
223 ASSERT(mp->m_rootip);
224 xfs_qm_dqdetach(mp->m_rootip);
226 xfs_qm_dqdetach(mp->m_rbmip);
228 xfs_qm_dqdetach(mp->m_rsumip);
231 * Release the quota inodes.
233 if (mp->m_quotainfo) {
234 if (mp->m_quotainfo->qi_uquotaip) {
235 xfs_irele(mp->m_quotainfo->qi_uquotaip);
236 mp->m_quotainfo->qi_uquotaip = NULL;
238 if (mp->m_quotainfo->qi_gquotaip) {
239 xfs_irele(mp->m_quotainfo->qi_gquotaip);
240 mp->m_quotainfo->qi_gquotaip = NULL;
242 if (mp->m_quotainfo->qi_pquotaip) {
243 xfs_irele(mp->m_quotainfo->qi_pquotaip);
244 mp->m_quotainfo->qi_pquotaip = NULL;
251 struct xfs_inode *ip,
255 struct xfs_dquot **IO_idqpp)
257 struct xfs_dquot *dqp;
260 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
264 * See if we already have it in the inode itself. IO_idqpp is &i_udquot
265 * or &i_gdquot. This made the code look weird, but made the logic a lot
270 trace_xfs_dqattach_found(dqp);
275 * Find the dquot from somewhere. This bumps the reference count of
276 * dquot and returns it locked. This can return ENOENT if dquot didn't
277 * exist on disk and we didn't ask it to allocate; ESRCH if quotas got
278 * turned off suddenly.
280 error = xfs_qm_dqget_inode(ip, type, doalloc, &dqp);
284 trace_xfs_dqattach_get(dqp);
287 * dqget may have dropped and re-acquired the ilock, but it guarantees
288 * that the dquot returned is the one that should go in the inode.
296 xfs_qm_need_dqattach(
297 struct xfs_inode *ip)
299 struct xfs_mount *mp = ip->i_mount;
301 if (!XFS_IS_QUOTA_RUNNING(mp))
303 if (!XFS_IS_QUOTA_ON(mp))
305 if (!XFS_NOT_DQATTACHED(mp, ip))
307 if (xfs_is_quota_inode(&mp->m_sb, ip->i_ino))
313 * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON
315 * If @doalloc is true, the dquot(s) will be allocated if needed.
316 * Inode may get unlocked and relocked in here, and the caller must deal with
320 xfs_qm_dqattach_locked(
324 xfs_mount_t *mp = ip->i_mount;
327 if (!xfs_qm_need_dqattach(ip))
330 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
332 if (XFS_IS_UQUOTA_ON(mp) && !ip->i_udquot) {
333 error = xfs_qm_dqattach_one(ip, i_uid_read(VFS_I(ip)),
334 XFS_DQ_USER, doalloc, &ip->i_udquot);
337 ASSERT(ip->i_udquot);
340 if (XFS_IS_GQUOTA_ON(mp) && !ip->i_gdquot) {
341 error = xfs_qm_dqattach_one(ip, i_gid_read(VFS_I(ip)),
342 XFS_DQ_GROUP, doalloc, &ip->i_gdquot);
345 ASSERT(ip->i_gdquot);
348 if (XFS_IS_PQUOTA_ON(mp) && !ip->i_pdquot) {
349 error = xfs_qm_dqattach_one(ip, ip->i_d.di_projid, XFS_DQ_PROJ,
350 doalloc, &ip->i_pdquot);
353 ASSERT(ip->i_pdquot);
358 * Don't worry about the dquots that we may have attached before any
359 * error - they'll get detached later if it has not already been done.
361 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
367 struct xfs_inode *ip)
371 if (!xfs_qm_need_dqattach(ip))
374 xfs_ilock(ip, XFS_ILOCK_EXCL);
375 error = xfs_qm_dqattach_locked(ip, false);
376 xfs_iunlock(ip, XFS_ILOCK_EXCL);
382 * Release dquots (and their references) if any.
383 * The inode should be locked EXCL except when this's called by
390 if (!(ip->i_udquot || ip->i_gdquot || ip->i_pdquot))
393 trace_xfs_dquot_dqdetach(ip);
395 ASSERT(!xfs_is_quota_inode(&ip->i_mount->m_sb, ip->i_ino));
397 xfs_qm_dqrele(ip->i_udquot);
401 xfs_qm_dqrele(ip->i_gdquot);
405 xfs_qm_dqrele(ip->i_pdquot);
410 struct xfs_qm_isolate {
411 struct list_head buffers;
412 struct list_head dispose;
415 static enum lru_status
416 xfs_qm_dquot_isolate(
417 struct list_head *item,
418 struct list_lru_one *lru,
419 spinlock_t *lru_lock,
421 __releases(lru_lock) __acquires(lru_lock)
423 struct xfs_dquot *dqp = container_of(item,
424 struct xfs_dquot, q_lru);
425 struct xfs_qm_isolate *isol = arg;
427 if (!xfs_dqlock_nowait(dqp))
431 * This dquot has acquired a reference in the meantime remove it from
432 * the freelist and try again.
436 XFS_STATS_INC(dqp->q_mount, xs_qm_dqwants);
438 trace_xfs_dqreclaim_want(dqp);
439 list_lru_isolate(lru, &dqp->q_lru);
440 XFS_STATS_DEC(dqp->q_mount, xs_qm_dquot_unused);
445 * If the dquot is dirty, flush it. If it's already being flushed, just
446 * skip it so there is time for the IO to complete before we try to
447 * reclaim it again on the next LRU pass.
449 if (!xfs_dqflock_nowait(dqp)) {
454 if (XFS_DQ_IS_DIRTY(dqp)) {
455 struct xfs_buf *bp = NULL;
458 trace_xfs_dqreclaim_dirty(dqp);
460 /* we have to drop the LRU lock to flush the dquot */
461 spin_unlock(lru_lock);
463 error = xfs_qm_dqflush(dqp, &bp);
465 goto out_unlock_dirty;
467 xfs_buf_delwri_queue(bp, &isol->buffers);
469 goto out_unlock_dirty;
474 * Prevent lookups now that we are past the point of no return.
476 dqp->dq_flags |= XFS_DQ_FREEING;
479 ASSERT(dqp->q_nrefs == 0);
480 list_lru_isolate_move(lru, &dqp->q_lru, &isol->dispose);
481 XFS_STATS_DEC(dqp->q_mount, xs_qm_dquot_unused);
482 trace_xfs_dqreclaim_done(dqp);
483 XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaims);
487 trace_xfs_dqreclaim_busy(dqp);
488 XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaim_misses);
492 trace_xfs_dqreclaim_busy(dqp);
493 XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaim_misses);
501 struct shrinker *shrink,
502 struct shrink_control *sc)
504 struct xfs_quotainfo *qi = container_of(shrink,
505 struct xfs_quotainfo, qi_shrinker);
506 struct xfs_qm_isolate isol;
510 if ((sc->gfp_mask & (__GFP_FS|__GFP_DIRECT_RECLAIM)) != (__GFP_FS|__GFP_DIRECT_RECLAIM))
513 INIT_LIST_HEAD(&isol.buffers);
514 INIT_LIST_HEAD(&isol.dispose);
516 freed = list_lru_shrink_walk(&qi->qi_lru, sc,
517 xfs_qm_dquot_isolate, &isol);
519 error = xfs_buf_delwri_submit(&isol.buffers);
521 xfs_warn(NULL, "%s: dquot reclaim failed", __func__);
523 while (!list_empty(&isol.dispose)) {
524 struct xfs_dquot *dqp;
526 dqp = list_first_entry(&isol.dispose, struct xfs_dquot, q_lru);
527 list_del_init(&dqp->q_lru);
528 xfs_qm_dqfree_one(dqp);
536 struct shrinker *shrink,
537 struct shrink_control *sc)
539 struct xfs_quotainfo *qi = container_of(shrink,
540 struct xfs_quotainfo, qi_shrinker);
542 return list_lru_shrink_count(&qi->qi_lru, sc);
547 struct xfs_mount *mp,
549 struct xfs_quotainfo *qinf)
551 struct xfs_dquot *dqp;
552 struct xfs_def_quota *defq;
553 struct xfs_disk_dquot *ddqp;
556 error = xfs_qm_dqget_uncached(mp, 0, type, &dqp);
561 defq = xfs_get_defquota(qinf, xfs_dquot_type(dqp));
564 * Timers and warnings have been already set, let's just set the
565 * default limits for this quota type
567 defq->bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit);
568 defq->bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit);
569 defq->ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit);
570 defq->isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit);
571 defq->rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit);
572 defq->rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit);
573 xfs_qm_dqdestroy(dqp);
576 /* Initialize quota time limits from the root dquot. */
578 xfs_qm_init_timelimits(
579 struct xfs_mount *mp,
582 struct xfs_quotainfo *qinf = mp->m_quotainfo;
583 struct xfs_def_quota *defq;
584 struct xfs_disk_dquot *ddqp;
585 struct xfs_dquot *dqp;
588 defq = xfs_get_defquota(qinf, type);
590 defq->btimelimit = XFS_QM_BTIMELIMIT;
591 defq->itimelimit = XFS_QM_ITIMELIMIT;
592 defq->rtbtimelimit = XFS_QM_RTBTIMELIMIT;
593 defq->bwarnlimit = XFS_QM_BWARNLIMIT;
594 defq->iwarnlimit = XFS_QM_IWARNLIMIT;
595 defq->rtbwarnlimit = XFS_QM_RTBWARNLIMIT;
598 * We try to get the limits from the superuser's limits fields.
599 * This is quite hacky, but it is standard quota practice.
601 * Since we may not have done a quotacheck by this point, just read
602 * the dquot without attaching it to any hashtables or lists.
604 error = xfs_qm_dqget_uncached(mp, 0, type, &dqp);
611 * The warnings and timers set the grace period given to
612 * a user or group before he or she can not perform any
613 * more writing. If it is zero, a default is used.
616 defq->btimelimit = be32_to_cpu(ddqp->d_btimer);
618 defq->itimelimit = be32_to_cpu(ddqp->d_itimer);
619 if (ddqp->d_rtbtimer)
620 defq->rtbtimelimit = be32_to_cpu(ddqp->d_rtbtimer);
622 defq->bwarnlimit = be16_to_cpu(ddqp->d_bwarns);
624 defq->iwarnlimit = be16_to_cpu(ddqp->d_iwarns);
625 if (ddqp->d_rtbwarns)
626 defq->rtbwarnlimit = be16_to_cpu(ddqp->d_rtbwarns);
628 xfs_qm_dqdestroy(dqp);
632 * This initializes all the quota information that's kept in the
636 xfs_qm_init_quotainfo(
637 struct xfs_mount *mp)
639 struct xfs_quotainfo *qinf;
642 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
644 qinf = mp->m_quotainfo = kmem_zalloc(sizeof(struct xfs_quotainfo), 0);
646 error = list_lru_init(&qinf->qi_lru);
651 * See if quotainodes are setup, and if not, allocate them,
652 * and change the superblock accordingly.
654 error = xfs_qm_init_quotainos(mp);
658 INIT_RADIX_TREE(&qinf->qi_uquota_tree, GFP_NOFS);
659 INIT_RADIX_TREE(&qinf->qi_gquota_tree, GFP_NOFS);
660 INIT_RADIX_TREE(&qinf->qi_pquota_tree, GFP_NOFS);
661 mutex_init(&qinf->qi_tree_lock);
663 /* mutex used to serialize quotaoffs */
664 mutex_init(&qinf->qi_quotaofflock);
666 /* Precalc some constants */
667 qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB);
668 qinf->qi_dqperchunk = xfs_calc_dquots_per_chunk(qinf->qi_dqchunklen);
670 mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD);
672 xfs_qm_init_timelimits(mp, XFS_DQ_USER);
673 xfs_qm_init_timelimits(mp, XFS_DQ_GROUP);
674 xfs_qm_init_timelimits(mp, XFS_DQ_PROJ);
676 if (XFS_IS_UQUOTA_RUNNING(mp))
677 xfs_qm_set_defquota(mp, XFS_DQ_USER, qinf);
678 if (XFS_IS_GQUOTA_RUNNING(mp))
679 xfs_qm_set_defquota(mp, XFS_DQ_GROUP, qinf);
680 if (XFS_IS_PQUOTA_RUNNING(mp))
681 xfs_qm_set_defquota(mp, XFS_DQ_PROJ, qinf);
683 qinf->qi_shrinker.count_objects = xfs_qm_shrink_count;
684 qinf->qi_shrinker.scan_objects = xfs_qm_shrink_scan;
685 qinf->qi_shrinker.seeks = DEFAULT_SEEKS;
686 qinf->qi_shrinker.flags = SHRINKER_NUMA_AWARE;
688 error = register_shrinker(&qinf->qi_shrinker);
695 mutex_destroy(&qinf->qi_quotaofflock);
696 mutex_destroy(&qinf->qi_tree_lock);
697 xfs_qm_destroy_quotainos(qinf);
699 list_lru_destroy(&qinf->qi_lru);
702 mp->m_quotainfo = NULL;
707 * Gets called when unmounting a filesystem or when all quotas get
709 * This purges the quota inodes, destroys locks and frees itself.
712 xfs_qm_destroy_quotainfo(
713 struct xfs_mount *mp)
715 struct xfs_quotainfo *qi;
717 qi = mp->m_quotainfo;
720 unregister_shrinker(&qi->qi_shrinker);
721 list_lru_destroy(&qi->qi_lru);
722 xfs_qm_destroy_quotainos(qi);
723 mutex_destroy(&qi->qi_tree_lock);
724 mutex_destroy(&qi->qi_quotaofflock);
726 mp->m_quotainfo = NULL;
730 * Create an inode and return with a reference already taken, but unlocked
731 * This is how we create quota inodes
741 bool need_alloc = true;
745 * With superblock that doesn't have separate pquotino, we
746 * share an inode between gquota and pquota. If the on-disk
747 * superblock has GQUOTA and the filesystem is now mounted
748 * with PQUOTA, just use sb_gquotino for sb_pquotino and
751 if (!xfs_sb_version_has_pquotino(&mp->m_sb) &&
752 (flags & (XFS_QMOPT_PQUOTA|XFS_QMOPT_GQUOTA))) {
753 xfs_ino_t ino = NULLFSINO;
755 if ((flags & XFS_QMOPT_PQUOTA) &&
756 (mp->m_sb.sb_gquotino != NULLFSINO)) {
757 ino = mp->m_sb.sb_gquotino;
758 if (XFS_IS_CORRUPT(mp,
759 mp->m_sb.sb_pquotino != NULLFSINO))
760 return -EFSCORRUPTED;
761 } else if ((flags & XFS_QMOPT_GQUOTA) &&
762 (mp->m_sb.sb_pquotino != NULLFSINO)) {
763 ino = mp->m_sb.sb_pquotino;
764 if (XFS_IS_CORRUPT(mp,
765 mp->m_sb.sb_gquotino != NULLFSINO))
766 return -EFSCORRUPTED;
768 if (ino != NULLFSINO) {
769 error = xfs_iget(mp, NULL, ino, 0, 0, ip);
772 mp->m_sb.sb_gquotino = NULLFSINO;
773 mp->m_sb.sb_pquotino = NULLFSINO;
778 error = xfs_trans_alloc(mp, &M_RES(mp)->tr_create,
779 need_alloc ? XFS_QM_QINOCREATE_SPACE_RES(mp) : 0,
785 error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, ip);
787 xfs_trans_cancel(tp);
793 * Make the changes in the superblock, and log those too.
794 * sbfields arg may contain fields other than *QUOTINO;
795 * VERSIONNUM for example.
797 spin_lock(&mp->m_sb_lock);
798 if (flags & XFS_QMOPT_SBVERSION) {
799 ASSERT(!xfs_sb_version_hasquota(&mp->m_sb));
801 xfs_sb_version_addquota(&mp->m_sb);
802 mp->m_sb.sb_uquotino = NULLFSINO;
803 mp->m_sb.sb_gquotino = NULLFSINO;
804 mp->m_sb.sb_pquotino = NULLFSINO;
806 /* qflags will get updated fully _after_ quotacheck */
807 mp->m_sb.sb_qflags = mp->m_qflags & XFS_ALL_QUOTA_ACCT;
809 if (flags & XFS_QMOPT_UQUOTA)
810 mp->m_sb.sb_uquotino = (*ip)->i_ino;
811 else if (flags & XFS_QMOPT_GQUOTA)
812 mp->m_sb.sb_gquotino = (*ip)->i_ino;
814 mp->m_sb.sb_pquotino = (*ip)->i_ino;
815 spin_unlock(&mp->m_sb_lock);
818 error = xfs_trans_commit(tp);
820 ASSERT(XFS_FORCED_SHUTDOWN(mp));
821 xfs_alert(mp, "%s failed (error %d)!", __func__, error);
824 xfs_finish_inode_setup(*ip);
830 xfs_qm_reset_dqcounts(
836 struct xfs_dqblk *dqb;
840 trace_xfs_reset_dqcounts(bp, _RET_IP_);
843 * Reset all counters and timers. They'll be
844 * started afresh by xfs_qm_quotacheck.
847 j = (int)XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB) /
849 ASSERT(mp->m_quotainfo->qi_dqperchunk == j);
852 for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) {
853 struct xfs_disk_dquot *ddq;
855 ddq = (struct xfs_disk_dquot *)&dqb[j];
858 * Do a sanity check, and if needed, repair the dqblk. Don't
859 * output any warnings because it's perfectly possible to
860 * find uninitialised dquot blks. See comment in
863 fa = xfs_dqblk_verify(mp, &dqb[j], id + j, type);
865 xfs_dqblk_repair(mp, &dqb[j], id + j, type);
868 * Reset type in case we are reusing group quota file for
869 * project quotas or vice versa
877 * dquot id 0 stores the default grace period and the maximum
878 * warning limit that were set by the administrator, so we
879 * should not reset them.
881 if (ddq->d_id != 0) {
890 if (xfs_sb_version_hascrc(&mp->m_sb)) {
891 xfs_update_cksum((char *)&dqb[j],
892 sizeof(struct xfs_dqblk),
899 xfs_qm_reset_dqcounts_all(
900 struct xfs_mount *mp,
903 xfs_filblks_t blkcnt,
905 struct list_head *buffer_list)
912 type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER :
913 (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP);
917 * Blkcnt arg can be a very big number, and might even be
918 * larger than the log itself. So, we have to break it up into
919 * manageable-sized transactions.
920 * Note that we don't start a permanent transaction here; we might
921 * not be able to get a log reservation for the whole thing up front,
922 * and we don't really care to either, because we just discard
923 * everything if we were to crash in the middle of this loop.
926 error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp,
927 XFS_FSB_TO_DADDR(mp, bno),
928 mp->m_quotainfo->qi_dqchunklen, 0, &bp,
932 * CRC and validation errors will return a EFSCORRUPTED here. If
933 * this occurs, re-read without CRC validation so that we can
934 * repair the damage via xfs_qm_reset_dqcounts(). This process
935 * will leave a trace in the log indicating corruption has
938 if (error == -EFSCORRUPTED) {
939 error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp,
940 XFS_FSB_TO_DADDR(mp, bno),
941 mp->m_quotainfo->qi_dqchunklen, 0, &bp,
949 * A corrupt buffer might not have a verifier attached, so
950 * make sure we have the correct one attached before writeback
953 bp->b_ops = &xfs_dquot_buf_ops;
954 xfs_qm_reset_dqcounts(mp, bp, firstid, type);
955 xfs_buf_delwri_queue(bp, buffer_list);
958 /* goto the next block. */
960 firstid += mp->m_quotainfo->qi_dqperchunk;
967 * Iterate over all allocated dquot blocks in this quota inode, zeroing all
968 * counters for every chunk of dquots that we find.
971 xfs_qm_reset_dqcounts_buf(
972 struct xfs_mount *mp,
973 struct xfs_inode *qip,
975 struct list_head *buffer_list)
977 struct xfs_bmbt_irec *map;
978 int i, nmaps; /* number of map entries */
979 int error; /* return value */
980 xfs_fileoff_t lblkno;
981 xfs_filblks_t maxlblkcnt;
983 xfs_fsblock_t rablkno;
984 xfs_filblks_t rablkcnt;
988 * This looks racy, but we can't keep an inode lock across a
989 * trans_reserve. But, this gets called during quotacheck, and that
990 * happens only at mount time which is single threaded.
992 if (qip->i_d.di_nblocks == 0)
995 map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), 0);
998 maxlblkcnt = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes);
1002 nmaps = XFS_DQITER_MAP_SIZE;
1004 * We aren't changing the inode itself. Just changing
1005 * some of its data. No new blocks are added here, and
1006 * the inode is never added to the transaction.
1008 lock_mode = xfs_ilock_data_map_shared(qip);
1009 error = xfs_bmapi_read(qip, lblkno, maxlblkcnt - lblkno,
1011 xfs_iunlock(qip, lock_mode);
1015 ASSERT(nmaps <= XFS_DQITER_MAP_SIZE);
1016 for (i = 0; i < nmaps; i++) {
1017 ASSERT(map[i].br_startblock != DELAYSTARTBLOCK);
1018 ASSERT(map[i].br_blockcount);
1021 lblkno += map[i].br_blockcount;
1023 if (map[i].br_startblock == HOLESTARTBLOCK)
1026 firstid = (xfs_dqid_t) map[i].br_startoff *
1027 mp->m_quotainfo->qi_dqperchunk;
1029 * Do a read-ahead on the next extent.
1031 if ((i+1 < nmaps) &&
1032 (map[i+1].br_startblock != HOLESTARTBLOCK)) {
1033 rablkcnt = map[i+1].br_blockcount;
1034 rablkno = map[i+1].br_startblock;
1035 while (rablkcnt--) {
1036 xfs_buf_readahead(mp->m_ddev_targp,
1037 XFS_FSB_TO_DADDR(mp, rablkno),
1038 mp->m_quotainfo->qi_dqchunklen,
1039 &xfs_dquot_buf_ops);
1044 * Iterate thru all the blks in the extent and
1045 * reset the counters of all the dquots inside them.
1047 error = xfs_qm_reset_dqcounts_all(mp, firstid,
1048 map[i].br_startblock,
1049 map[i].br_blockcount,
1050 flags, buffer_list);
1054 } while (nmaps > 0);
1062 * Called by dqusage_adjust in doing a quotacheck.
1064 * Given the inode, and a dquot id this updates both the incore dqout as well
1065 * as the buffer copy. This is so that once the quotacheck is done, we can
1066 * just log all the buffers, as opposed to logging numerous updates to
1067 * individual dquots.
1070 xfs_qm_quotacheck_dqadjust(
1071 struct xfs_inode *ip,
1076 struct xfs_mount *mp = ip->i_mount;
1077 struct xfs_dquot *dqp;
1081 id = xfs_qm_id_for_quotatype(ip, type);
1082 error = xfs_qm_dqget(mp, id, type, true, &dqp);
1085 * Shouldn't be able to turn off quotas here.
1087 ASSERT(error != -ESRCH);
1088 ASSERT(error != -ENOENT);
1092 trace_xfs_dqadjust(dqp);
1095 * Adjust the inode count and the block count to reflect this inode's
1098 be64_add_cpu(&dqp->q_core.d_icount, 1);
1099 dqp->q_res_icount++;
1101 be64_add_cpu(&dqp->q_core.d_bcount, nblks);
1102 dqp->q_res_bcount += nblks;
1105 be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks);
1106 dqp->q_res_rtbcount += rtblks;
1110 * Set default limits, adjust timers (since we changed usages)
1112 * There are no timers for the default values set in the root dquot.
1114 if (dqp->q_core.d_id) {
1115 xfs_qm_adjust_dqlimits(mp, dqp);
1116 xfs_qm_adjust_dqtimers(mp, dqp);
1119 dqp->dq_flags |= XFS_DQ_DIRTY;
1125 * callback routine supplied to bulkstat(). Given an inumber, find its
1126 * dquots and update them to account for resources taken by that inode.
1130 xfs_qm_dqusage_adjust(
1131 struct xfs_mount *mp,
1132 struct xfs_trans *tp,
1136 struct xfs_inode *ip;
1138 xfs_filblks_t rtblks = 0; /* total rt blks */
1141 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1144 * rootino must have its resources accounted for, not so with the quota
1147 if (xfs_is_quota_inode(&mp->m_sb, ino))
1151 * We don't _need_ to take the ilock EXCL here because quotacheck runs
1152 * at mount time and therefore nobody will be racing chown/chproj.
1154 error = xfs_iget(mp, tp, ino, XFS_IGET_DONTCACHE, 0, &ip);
1155 if (error == -EINVAL || error == -ENOENT)
1160 ASSERT(ip->i_delayed_blks == 0);
1162 if (XFS_IS_REALTIME_INODE(ip)) {
1163 struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK);
1165 if (!(ifp->if_flags & XFS_IFEXTENTS)) {
1166 error = xfs_iread_extents(tp, ip, XFS_DATA_FORK);
1171 xfs_bmap_count_leaves(ifp, &rtblks);
1174 nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks;
1177 * Add the (disk blocks and inode) resources occupied by this
1178 * inode to its dquots. We do this adjustment in the incore dquot,
1179 * and also copy the changes to its buffer.
1180 * We don't care about putting these changes in a transaction
1181 * envelope because if we crash in the middle of a 'quotacheck'
1182 * we have to start from the beginning anyway.
1183 * Once we're done, we'll log all the dquot bufs.
1185 * The *QUOTA_ON checks below may look pretty racy, but quotachecks
1186 * and quotaoffs don't race. (Quotachecks happen at mount time only).
1188 if (XFS_IS_UQUOTA_ON(mp)) {
1189 error = xfs_qm_quotacheck_dqadjust(ip, XFS_DQ_USER, nblks,
1195 if (XFS_IS_GQUOTA_ON(mp)) {
1196 error = xfs_qm_quotacheck_dqadjust(ip, XFS_DQ_GROUP, nblks,
1202 if (XFS_IS_PQUOTA_ON(mp)) {
1203 error = xfs_qm_quotacheck_dqadjust(ip, XFS_DQ_PROJ, nblks,
1216 struct xfs_dquot *dqp,
1219 struct xfs_mount *mp = dqp->q_mount;
1220 struct list_head *buffer_list = data;
1221 struct xfs_buf *bp = NULL;
1225 if (dqp->dq_flags & XFS_DQ_FREEING)
1227 if (!XFS_DQ_IS_DIRTY(dqp))
1231 * The only way the dquot is already flush locked by the time quotacheck
1232 * gets here is if reclaim flushed it before the dqadjust walk dirtied
1233 * it for the final time. Quotacheck collects all dquot bufs in the
1234 * local delwri queue before dquots are dirtied, so reclaim can't have
1235 * possibly queued it for I/O. The only way out is to push the buffer to
1236 * cycle the flush lock.
1238 if (!xfs_dqflock_nowait(dqp)) {
1239 /* buf is pinned in-core by delwri list */
1240 bp = xfs_buf_incore(mp->m_ddev_targp, dqp->q_blkno,
1241 mp->m_quotainfo->qi_dqchunklen, 0);
1248 xfs_buf_delwri_pushbuf(bp, buffer_list);
1255 error = xfs_qm_dqflush(dqp, &bp);
1259 xfs_buf_delwri_queue(bp, buffer_list);
1267 * Walk thru all the filesystem inodes and construct a consistent view
1268 * of the disk quota world. If the quotacheck fails, disable quotas.
1276 LIST_HEAD (buffer_list);
1277 struct xfs_inode *uip = mp->m_quotainfo->qi_uquotaip;
1278 struct xfs_inode *gip = mp->m_quotainfo->qi_gquotaip;
1279 struct xfs_inode *pip = mp->m_quotainfo->qi_pquotaip;
1283 ASSERT(uip || gip || pip);
1284 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1286 xfs_notice(mp, "Quotacheck needed: Please wait.");
1289 * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset
1290 * their counters to zero. We need a clean slate.
1291 * We don't log our changes till later.
1294 error = xfs_qm_reset_dqcounts_buf(mp, uip, XFS_QMOPT_UQUOTA,
1298 flags |= XFS_UQUOTA_CHKD;
1302 error = xfs_qm_reset_dqcounts_buf(mp, gip, XFS_QMOPT_GQUOTA,
1306 flags |= XFS_GQUOTA_CHKD;
1310 error = xfs_qm_reset_dqcounts_buf(mp, pip, XFS_QMOPT_PQUOTA,
1314 flags |= XFS_PQUOTA_CHKD;
1317 error = xfs_iwalk_threaded(mp, 0, 0, xfs_qm_dqusage_adjust, 0, true,
1323 * We've made all the changes that we need to make incore. Flush them
1324 * down to disk buffers if everything was updated successfully.
1326 if (XFS_IS_UQUOTA_ON(mp)) {
1327 error = xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_flush_one,
1330 if (XFS_IS_GQUOTA_ON(mp)) {
1331 error2 = xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_flush_one,
1336 if (XFS_IS_PQUOTA_ON(mp)) {
1337 error2 = xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_flush_one,
1343 error2 = xfs_buf_delwri_submit(&buffer_list);
1348 * We can get this error if we couldn't do a dquot allocation inside
1349 * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the
1350 * dirty dquots that might be cached, we just want to get rid of them
1351 * and turn quotaoff. The dquots won't be attached to any of the inodes
1352 * at this point (because we intentionally didn't in dqget_noattach).
1355 xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL);
1360 * If one type of quotas is off, then it will lose its
1361 * quotachecked status, since we won't be doing accounting for
1362 * that type anymore.
1364 mp->m_qflags &= ~XFS_ALL_QUOTA_CHKD;
1365 mp->m_qflags |= flags;
1368 xfs_buf_delwri_cancel(&buffer_list);
1372 "Quotacheck: Unsuccessful (Error %d): Disabling quotas.",
1375 * We must turn off quotas.
1377 ASSERT(mp->m_quotainfo != NULL);
1378 xfs_qm_destroy_quotainfo(mp);
1379 if (xfs_mount_reset_sbqflags(mp)) {
1381 "Quotacheck: Failed to reset quota flags.");
1384 xfs_notice(mp, "Quotacheck: Done.");
1389 * This is called from xfs_mountfs to start quotas and initialize all
1390 * necessary data structures like quotainfo. This is also responsible for
1391 * running a quotacheck as necessary. We are guaranteed that the superblock
1392 * is consistently read in at this point.
1394 * If we fail here, the mount will continue with quota turned off. We don't
1395 * need to inidicate success or failure at all.
1398 xfs_qm_mount_quotas(
1399 struct xfs_mount *mp)
1405 * If quotas on realtime volumes is not supported, we disable
1406 * quotas immediately.
1408 if (mp->m_sb.sb_rextents) {
1409 xfs_notice(mp, "Cannot turn on quotas for realtime filesystem");
1414 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1417 * Allocate the quotainfo structure inside the mount struct, and
1418 * create quotainode(s), and change/rev superblock if necessary.
1420 error = xfs_qm_init_quotainfo(mp);
1423 * We must turn off quotas.
1425 ASSERT(mp->m_quotainfo == NULL);
1430 * If any of the quotas are not consistent, do a quotacheck.
1432 if (XFS_QM_NEED_QUOTACHECK(mp)) {
1433 error = xfs_qm_quotacheck(mp);
1435 /* Quotacheck failed and disabled quotas. */
1440 * If one type of quotas is off, then it will lose its
1441 * quotachecked status, since we won't be doing accounting for
1442 * that type anymore.
1444 if (!XFS_IS_UQUOTA_ON(mp))
1445 mp->m_qflags &= ~XFS_UQUOTA_CHKD;
1446 if (!XFS_IS_GQUOTA_ON(mp))
1447 mp->m_qflags &= ~XFS_GQUOTA_CHKD;
1448 if (!XFS_IS_PQUOTA_ON(mp))
1449 mp->m_qflags &= ~XFS_PQUOTA_CHKD;
1453 * We actually don't have to acquire the m_sb_lock at all.
1454 * This can only be called from mount, and that's single threaded. XXX
1456 spin_lock(&mp->m_sb_lock);
1457 sbf = mp->m_sb.sb_qflags;
1458 mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL;
1459 spin_unlock(&mp->m_sb_lock);
1461 if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) {
1462 if (xfs_sync_sb(mp, false)) {
1464 * We could only have been turning quotas off.
1465 * We aren't in very good shape actually because
1466 * the incore structures are convinced that quotas are
1467 * off, but the on disk superblock doesn't know that !
1469 ASSERT(!(XFS_IS_QUOTA_RUNNING(mp)));
1470 xfs_alert(mp, "%s: Superblock update failed!",
1476 xfs_warn(mp, "Failed to initialize disk quotas.");
1482 * This is called after the superblock has been read in and we're ready to
1483 * iget the quota inodes.
1486 xfs_qm_init_quotainos(
1489 struct xfs_inode *uip = NULL;
1490 struct xfs_inode *gip = NULL;
1491 struct xfs_inode *pip = NULL;
1495 ASSERT(mp->m_quotainfo);
1498 * Get the uquota and gquota inodes
1500 if (xfs_sb_version_hasquota(&mp->m_sb)) {
1501 if (XFS_IS_UQUOTA_ON(mp) &&
1502 mp->m_sb.sb_uquotino != NULLFSINO) {
1503 ASSERT(mp->m_sb.sb_uquotino > 0);
1504 error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
1509 if (XFS_IS_GQUOTA_ON(mp) &&
1510 mp->m_sb.sb_gquotino != NULLFSINO) {
1511 ASSERT(mp->m_sb.sb_gquotino > 0);
1512 error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
1517 if (XFS_IS_PQUOTA_ON(mp) &&
1518 mp->m_sb.sb_pquotino != NULLFSINO) {
1519 ASSERT(mp->m_sb.sb_pquotino > 0);
1520 error = xfs_iget(mp, NULL, mp->m_sb.sb_pquotino,
1526 flags |= XFS_QMOPT_SBVERSION;
1530 * Create the three inodes, if they don't exist already. The changes
1531 * made above will get added to a transaction and logged in one of
1532 * the qino_alloc calls below. If the device is readonly,
1533 * temporarily switch to read-write to do this.
1535 if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) {
1536 error = xfs_qm_qino_alloc(mp, &uip,
1537 flags | XFS_QMOPT_UQUOTA);
1541 flags &= ~XFS_QMOPT_SBVERSION;
1543 if (XFS_IS_GQUOTA_ON(mp) && gip == NULL) {
1544 error = xfs_qm_qino_alloc(mp, &gip,
1545 flags | XFS_QMOPT_GQUOTA);
1549 flags &= ~XFS_QMOPT_SBVERSION;
1551 if (XFS_IS_PQUOTA_ON(mp) && pip == NULL) {
1552 error = xfs_qm_qino_alloc(mp, &pip,
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;
1575 xfs_qm_destroy_quotainos(
1576 struct xfs_quotainfo *qi)
1578 if (qi->qi_uquotaip) {
1579 xfs_irele(qi->qi_uquotaip);
1580 qi->qi_uquotaip = NULL; /* paranoia */
1582 if (qi->qi_gquotaip) {
1583 xfs_irele(qi->qi_gquotaip);
1584 qi->qi_gquotaip = NULL;
1586 if (qi->qi_pquotaip) {
1587 xfs_irele(qi->qi_pquotaip);
1588 qi->qi_pquotaip = NULL;
1594 struct xfs_dquot *dqp)
1596 struct xfs_mount *mp = dqp->q_mount;
1597 struct xfs_quotainfo *qi = mp->m_quotainfo;
1599 mutex_lock(&qi->qi_tree_lock);
1600 radix_tree_delete(xfs_dquot_tree(qi, dqp->q_core.d_flags),
1601 be32_to_cpu(dqp->q_core.d_id));
1604 mutex_unlock(&qi->qi_tree_lock);
1606 xfs_qm_dqdestroy(dqp);
1609 /* --------------- utility functions for vnodeops ---------------- */
1613 * Given an inode, a uid, gid and prid make sure that we have
1614 * allocated relevant dquot(s) on disk, and that we won't exceed inode
1615 * quotas by creating this file.
1616 * This also attaches dquot(s) to the given inode after locking it,
1617 * and returns the dquots corresponding to the uid and/or gid.
1619 * in : inode (unlocked)
1620 * out : udquot, gdquot with references taken and unlocked
1624 struct xfs_inode *ip,
1629 struct xfs_dquot **O_udqpp,
1630 struct xfs_dquot **O_gdqpp,
1631 struct xfs_dquot **O_pdqpp)
1633 struct xfs_mount *mp = ip->i_mount;
1634 struct inode *inode = VFS_I(ip);
1635 struct user_namespace *user_ns = inode->i_sb->s_user_ns;
1636 struct xfs_dquot *uq = NULL;
1637 struct xfs_dquot *gq = NULL;
1638 struct xfs_dquot *pq = NULL;
1642 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
1645 lockflags = XFS_ILOCK_EXCL;
1646 xfs_ilock(ip, lockflags);
1648 if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip))
1652 * Attach the dquot(s) to this inode, doing a dquot allocation
1653 * if necessary. The dquot(s) will not be locked.
1655 if (XFS_NOT_DQATTACHED(mp, ip)) {
1656 error = xfs_qm_dqattach_locked(ip, true);
1658 xfs_iunlock(ip, lockflags);
1663 if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) {
1664 if (!uid_eq(inode->i_uid, uid)) {
1666 * What we need is the dquot that has this uid, and
1667 * if we send the inode to dqget, the uid of the inode
1668 * takes priority over what's sent in the uid argument.
1669 * We must unlock inode here before calling dqget if
1670 * we're not sending the inode, because otherwise
1671 * we'll deadlock by doing trans_reserve while
1674 xfs_iunlock(ip, lockflags);
1675 error = xfs_qm_dqget(mp, from_kuid(user_ns, uid),
1676 XFS_DQ_USER, true, &uq);
1678 ASSERT(error != -ENOENT);
1682 * Get the ilock in the right order.
1685 lockflags = XFS_ILOCK_SHARED;
1686 xfs_ilock(ip, lockflags);
1689 * Take an extra reference, because we'll return
1692 ASSERT(ip->i_udquot);
1693 uq = xfs_qm_dqhold(ip->i_udquot);
1696 if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) {
1697 if (!gid_eq(inode->i_gid, gid)) {
1698 xfs_iunlock(ip, lockflags);
1699 error = xfs_qm_dqget(mp, from_kgid(user_ns, gid),
1700 XFS_DQ_GROUP, true, &gq);
1702 ASSERT(error != -ENOENT);
1706 lockflags = XFS_ILOCK_SHARED;
1707 xfs_ilock(ip, lockflags);
1709 ASSERT(ip->i_gdquot);
1710 gq = xfs_qm_dqhold(ip->i_gdquot);
1713 if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) {
1714 if (ip->i_d.di_projid != prid) {
1715 xfs_iunlock(ip, lockflags);
1716 error = xfs_qm_dqget(mp, (xfs_dqid_t)prid, XFS_DQ_PROJ,
1719 ASSERT(error != -ENOENT);
1723 lockflags = XFS_ILOCK_SHARED;
1724 xfs_ilock(ip, lockflags);
1726 ASSERT(ip->i_pdquot);
1727 pq = xfs_qm_dqhold(ip->i_pdquot);
1730 trace_xfs_dquot_dqalloc(ip);
1732 xfs_iunlock(ip, lockflags);
1754 * Actually transfer ownership, and do dquot modifications.
1755 * These were already reserved.
1759 struct xfs_trans *tp,
1760 struct xfs_inode *ip,
1761 struct xfs_dquot **IO_olddq,
1762 struct xfs_dquot *newdq)
1764 struct xfs_dquot *prevdq;
1765 uint bfield = XFS_IS_REALTIME_INODE(ip) ?
1766 XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT;
1769 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
1770 ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount));
1775 ASSERT(prevdq != newdq);
1777 xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks));
1778 xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1);
1780 /* the sparkling new dquot */
1781 xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks);
1782 xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1);
1785 * Take an extra reference, because the inode is going to keep
1786 * this dquot pointer even after the trans_commit.
1788 *IO_olddq = xfs_qm_dqhold(newdq);
1794 * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID).
1797 xfs_qm_vop_chown_reserve(
1798 struct xfs_trans *tp,
1799 struct xfs_inode *ip,
1800 struct xfs_dquot *udqp,
1801 struct xfs_dquot *gdqp,
1802 struct xfs_dquot *pdqp,
1805 struct xfs_mount *mp = ip->i_mount;
1807 unsigned int blkflags;
1808 struct xfs_dquot *udq_unres = NULL;
1809 struct xfs_dquot *gdq_unres = NULL;
1810 struct xfs_dquot *pdq_unres = NULL;
1811 struct xfs_dquot *udq_delblks = NULL;
1812 struct xfs_dquot *gdq_delblks = NULL;
1813 struct xfs_dquot *pdq_delblks = NULL;
1817 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED));
1818 ASSERT(XFS_IS_QUOTA_RUNNING(mp));
1820 delblks = ip->i_delayed_blks;
1821 blkflags = XFS_IS_REALTIME_INODE(ip) ?
1822 XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS;
1824 if (XFS_IS_UQUOTA_ON(mp) && udqp &&
1825 i_uid_read(VFS_I(ip)) != be32_to_cpu(udqp->q_core.d_id)) {
1828 * If there are delayed allocation blocks, then we have to
1829 * unreserve those from the old dquot, and add them to the
1833 ASSERT(ip->i_udquot);
1834 udq_unres = ip->i_udquot;
1837 if (XFS_IS_GQUOTA_ON(ip->i_mount) && gdqp &&
1838 i_gid_read(VFS_I(ip)) != be32_to_cpu(gdqp->q_core.d_id)) {
1841 ASSERT(ip->i_gdquot);
1842 gdq_unres = ip->i_gdquot;
1846 if (XFS_IS_PQUOTA_ON(ip->i_mount) && pdqp &&
1847 ip->i_d.di_projid != be32_to_cpu(pdqp->q_core.d_id)) {
1850 ASSERT(ip->i_pdquot);
1851 pdq_unres = ip->i_pdquot;
1855 error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount,
1856 udq_delblks, gdq_delblks, pdq_delblks,
1857 ip->i_d.di_nblocks, 1, flags | blkflags);
1862 * Do the delayed blks reservations/unreservations now. Since, these
1863 * are done without the help of a transaction, if a reservation fails
1864 * its previous reservations won't be automatically undone by trans
1865 * code. So, we have to do it manually here.
1869 * Do the reservations first. Unreservation can't fail.
1871 ASSERT(udq_delblks || gdq_delblks || pdq_delblks);
1872 ASSERT(udq_unres || gdq_unres || pdq_unres);
1873 error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount,
1874 udq_delblks, gdq_delblks, pdq_delblks,
1875 (xfs_qcnt_t)delblks, 0, flags | blkflags);
1878 xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount,
1879 udq_unres, gdq_unres, pdq_unres,
1880 -((xfs_qcnt_t)delblks), 0, blkflags);
1887 xfs_qm_vop_rename_dqattach(
1888 struct xfs_inode **i_tab)
1890 struct xfs_mount *mp = i_tab[0]->i_mount;
1893 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
1896 for (i = 0; (i < 4 && i_tab[i]); i++) {
1897 struct xfs_inode *ip = i_tab[i];
1901 * Watch out for duplicate entries in the table.
1903 if (i == 0 || ip != i_tab[i-1]) {
1904 if (XFS_NOT_DQATTACHED(mp, ip)) {
1905 error = xfs_qm_dqattach(ip);
1915 xfs_qm_vop_create_dqattach(
1916 struct xfs_trans *tp,
1917 struct xfs_inode *ip,
1918 struct xfs_dquot *udqp,
1919 struct xfs_dquot *gdqp,
1920 struct xfs_dquot *pdqp)
1922 struct xfs_mount *mp = tp->t_mountp;
1924 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
1927 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
1929 if (udqp && XFS_IS_UQUOTA_ON(mp)) {
1930 ASSERT(ip->i_udquot == NULL);
1931 ASSERT(i_uid_read(VFS_I(ip)) == be32_to_cpu(udqp->q_core.d_id));
1933 ip->i_udquot = xfs_qm_dqhold(udqp);
1934 xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1);
1936 if (gdqp && XFS_IS_GQUOTA_ON(mp)) {
1937 ASSERT(ip->i_gdquot == NULL);
1938 ASSERT(i_gid_read(VFS_I(ip)) == be32_to_cpu(gdqp->q_core.d_id));
1940 ip->i_gdquot = xfs_qm_dqhold(gdqp);
1941 xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1);
1943 if (pdqp && XFS_IS_PQUOTA_ON(mp)) {
1944 ASSERT(ip->i_pdquot == NULL);
1945 ASSERT(ip->i_d.di_projid == be32_to_cpu(pdqp->q_core.d_id));
1947 ip->i_pdquot = xfs_qm_dqhold(pdqp);
1948 xfs_trans_mod_dquot(tp, pdqp, XFS_TRANS_DQ_ICOUNT, 1);