1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2000-2002 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"
12 #include "xfs_mount.h"
13 #include "xfs_inode.h"
14 #include "xfs_trans.h"
15 #include "xfs_trans_priv.h"
16 #include "xfs_quota.h"
18 #include "xfs_trace.h"
19 #include "xfs_error.h"
20 #include "xfs_health.h"
22 STATIC void xfs_trans_alloc_dqinfo(xfs_trans_t *);
25 * Add the locked dquot to the transaction.
26 * The dquot must be locked, and it cannot be associated with any
32 struct xfs_dquot *dqp)
34 ASSERT(XFS_DQ_IS_LOCKED(dqp));
35 ASSERT(dqp->q_logitem.qli_dquot == dqp);
38 * Get a log_item_desc to point at the new item.
40 xfs_trans_add_item(tp, &dqp->q_logitem.qli_item);
44 * This is called to mark the dquot as needing
45 * to be logged when the transaction is committed. The dquot must
46 * already be associated with the given transaction.
47 * Note that it marks the entire transaction as dirty. In the ordinary
48 * case, this gets called via xfs_trans_commit, after the transaction
49 * is already dirty. However, there's nothing stop this from getting
50 * called directly, as done by xfs_qm_scall_setqlim. Hence, the TRANS_DIRTY
56 struct xfs_dquot *dqp)
58 ASSERT(XFS_DQ_IS_LOCKED(dqp));
60 /* Upgrade the dquot to bigtime format if possible. */
62 xfs_has_bigtime(tp->t_mountp) &&
63 !(dqp->q_type & XFS_DQTYPE_BIGTIME))
64 dqp->q_type |= XFS_DQTYPE_BIGTIME;
66 tp->t_flags |= XFS_TRANS_DIRTY;
67 set_bit(XFS_LI_DIRTY, &dqp->q_logitem.qli_item.li_flags);
71 * Carry forward whatever is left of the quota blk reservation to
72 * the spanky new transaction
76 struct xfs_trans *otp,
77 struct xfs_trans *ntp)
79 struct xfs_dqtrx *oq, *nq;
81 struct xfs_dqtrx *oqa, *nqa;
82 uint64_t blk_res_used;
87 xfs_trans_alloc_dqinfo(ntp);
89 for (j = 0; j < XFS_QM_TRANS_DQTYPES; j++) {
90 oqa = otp->t_dqinfo->dqs[j];
91 nqa = ntp->t_dqinfo->dqs[j];
92 for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
95 if (oqa[i].qt_dquot == NULL)
100 if (oq->qt_blk_res && oq->qt_bcount_delta > 0)
101 blk_res_used = oq->qt_bcount_delta;
103 nq->qt_dquot = oq->qt_dquot;
104 nq->qt_bcount_delta = nq->qt_icount_delta = 0;
105 nq->qt_rtbcount_delta = 0;
108 * Transfer whatever is left of the reservations.
110 nq->qt_blk_res = oq->qt_blk_res - blk_res_used;
111 oq->qt_blk_res = blk_res_used;
113 nq->qt_rtblk_res = oq->qt_rtblk_res -
114 oq->qt_rtblk_res_used;
115 oq->qt_rtblk_res = oq->qt_rtblk_res_used;
117 nq->qt_ino_res = oq->qt_ino_res - oq->qt_ino_res_used;
118 oq->qt_ino_res = oq->qt_ino_res_used;
124 #ifdef CONFIG_XFS_LIVE_HOOKS
126 * Use a static key here to reduce the overhead of quota live updates. If the
127 * compiler supports jump labels, the static branch will be replaced by a nop
128 * sled when there are no hook users. Online fsck is currently the only
129 * caller, so this is a reasonable tradeoff.
131 * Note: Patching the kernel code requires taking the cpu hotplug lock. Other
132 * parts of the kernel allocate memory with that lock held, which means that
133 * XFS callers cannot hold any locks that might be used by memory reclaim or
134 * writeback when calling the static_branch_{inc,dec} functions.
136 DEFINE_STATIC_XFS_HOOK_SWITCH(xfs_dqtrx_hooks_switch);
139 xfs_dqtrx_hook_disable(void)
141 xfs_hooks_switch_off(&xfs_dqtrx_hooks_switch);
145 xfs_dqtrx_hook_enable(void)
147 xfs_hooks_switch_on(&xfs_dqtrx_hooks_switch);
150 /* Schedule a transactional dquot update on behalf of an inode. */
152 xfs_trans_mod_ino_dquot(
153 struct xfs_trans *tp,
154 struct xfs_inode *ip,
155 struct xfs_dquot *dqp,
159 ASSERT(!xfs_is_metadir_inode(ip) || XFS_IS_DQDETACHED(ip));
161 xfs_trans_mod_dquot(tp, dqp, field, delta);
163 if (xfs_hooks_switched_on(&xfs_dqtrx_hooks_switch)) {
164 struct xfs_mod_ino_dqtrx_params p = {
165 .tx_id = (uintptr_t)tp,
167 .q_type = xfs_dquot_type(dqp),
171 struct xfs_quotainfo *qi = tp->t_mountp->m_quotainfo;
173 xfs_hooks_call(&qi->qi_mod_ino_dqtrx_hooks, field, &p);
177 /* Call the specified functions during a dquot counter update. */
180 struct xfs_quotainfo *qi,
181 struct xfs_dqtrx_hook *hook)
186 * Transactional dquot updates first call the mod hook when changes
187 * are attached to the transaction and then call the apply hook when
188 * those changes are committed (or canceled).
190 * The apply hook must be installed before the mod hook so that we
191 * never fail to catch the end of a quota update sequence.
193 error = xfs_hooks_add(&qi->qi_apply_dqtrx_hooks, &hook->apply_hook);
197 error = xfs_hooks_add(&qi->qi_mod_ino_dqtrx_hooks, &hook->mod_hook);
204 xfs_hooks_del(&qi->qi_apply_dqtrx_hooks, &hook->apply_hook);
209 /* Stop calling the specified function during a dquot counter update. */
212 struct xfs_quotainfo *qi,
213 struct xfs_dqtrx_hook *hook)
216 * The mod hook must be removed before apply hook to avoid giving the
217 * hook consumer with an incomplete update. No hooks should be running
218 * after these functions return.
220 xfs_hooks_del(&qi->qi_mod_ino_dqtrx_hooks, &hook->mod_hook);
221 xfs_hooks_del(&qi->qi_apply_dqtrx_hooks, &hook->apply_hook);
224 /* Configure dquot update hook functions. */
226 xfs_dqtrx_hook_setup(
227 struct xfs_dqtrx_hook *hook,
228 notifier_fn_t mod_fn,
229 notifier_fn_t apply_fn)
231 xfs_hook_setup(&hook->mod_hook, mod_fn);
232 xfs_hook_setup(&hook->apply_hook, apply_fn);
234 #endif /* CONFIG_XFS_LIVE_HOOKS */
237 * Wrap around mod_dquot to account for both user and group quotas.
240 xfs_trans_mod_dquot_byino(
246 xfs_mount_t *mp = tp->t_mountp;
248 if (!XFS_IS_QUOTA_ON(mp) ||
249 xfs_is_quota_inode(&mp->m_sb, ip->i_ino))
252 ASSERT(!xfs_is_metadir_inode(ip) || XFS_IS_DQDETACHED(ip));
254 if (XFS_IS_UQUOTA_ON(mp) && ip->i_udquot)
255 xfs_trans_mod_ino_dquot(tp, ip, ip->i_udquot, field, delta);
256 if (XFS_IS_GQUOTA_ON(mp) && ip->i_gdquot)
257 xfs_trans_mod_ino_dquot(tp, ip, ip->i_gdquot, field, delta);
258 if (XFS_IS_PQUOTA_ON(mp) && ip->i_pdquot)
259 xfs_trans_mod_ino_dquot(tp, ip, ip->i_pdquot, field, delta);
262 STATIC struct xfs_dqtrx *
264 struct xfs_trans *tp,
265 struct xfs_dquot *dqp)
268 struct xfs_dqtrx *qa;
270 switch (xfs_dquot_type(dqp)) {
271 case XFS_DQTYPE_USER:
272 qa = tp->t_dqinfo->dqs[XFS_QM_TRANS_USR];
274 case XFS_DQTYPE_GROUP:
275 qa = tp->t_dqinfo->dqs[XFS_QM_TRANS_GRP];
277 case XFS_DQTYPE_PROJ:
278 qa = tp->t_dqinfo->dqs[XFS_QM_TRANS_PRJ];
284 for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
285 if (qa[i].qt_dquot == NULL ||
286 qa[i].qt_dquot == dqp)
294 * Make the changes in the transaction structure.
295 * The moral equivalent to xfs_trans_mod_sb().
296 * We don't touch any fields in the dquot, so we don't care
297 * if it's locked or not (most of the time it won't be).
301 struct xfs_trans *tp,
302 struct xfs_dquot *dqp,
306 struct xfs_dqtrx *qtrx;
309 ASSERT(XFS_IS_QUOTA_ON(tp->t_mountp));
315 if (tp->t_dqinfo == NULL)
316 xfs_trans_alloc_dqinfo(tp);
318 * Find either the first free slot or the slot that belongs
321 qtrx = xfs_trans_get_dqtrx(tp, dqp);
323 if (qtrx->qt_dquot == NULL)
324 qtrx->qt_dquot = dqp;
326 trace_xfs_trans_mod_dquot_before(qtrx);
327 trace_xfs_trans_mod_dquot(tp, dqp, field, delta);
330 /* regular disk blk reservation */
331 case XFS_TRANS_DQ_RES_BLKS:
332 qtrx->qt_blk_res += delta;
335 /* inode reservation */
336 case XFS_TRANS_DQ_RES_INOS:
337 qtrx->qt_ino_res += delta;
340 /* disk blocks used. */
341 case XFS_TRANS_DQ_BCOUNT:
342 qtrx->qt_bcount_delta += delta;
345 case XFS_TRANS_DQ_DELBCOUNT:
346 qtrx->qt_delbcnt_delta += delta;
350 case XFS_TRANS_DQ_ICOUNT:
351 if (qtrx->qt_ino_res && delta > 0) {
352 qtrx->qt_ino_res_used += delta;
353 ASSERT(qtrx->qt_ino_res >= qtrx->qt_ino_res_used);
355 qtrx->qt_icount_delta += delta;
358 /* rtblk reservation */
359 case XFS_TRANS_DQ_RES_RTBLKS:
360 qtrx->qt_rtblk_res += delta;
364 case XFS_TRANS_DQ_RTBCOUNT:
365 if (qtrx->qt_rtblk_res && delta > 0) {
366 qtrx->qt_rtblk_res_used += delta;
367 ASSERT(qtrx->qt_rtblk_res >= qtrx->qt_rtblk_res_used);
369 qtrx->qt_rtbcount_delta += delta;
372 case XFS_TRANS_DQ_DELRTBCOUNT:
373 qtrx->qt_delrtb_delta += delta;
380 trace_xfs_trans_mod_dquot_after(qtrx);
385 * Given an array of dqtrx structures, lock all the dquots associated and join
386 * them to the transaction, provided they have been modified.
389 xfs_trans_dqlockedjoin(
390 struct xfs_trans *tp,
394 ASSERT(q[0].qt_dquot != NULL);
395 if (q[1].qt_dquot == NULL) {
396 xfs_dqlock(q[0].qt_dquot);
397 xfs_trans_dqjoin(tp, q[0].qt_dquot);
398 } else if (q[2].qt_dquot == NULL) {
399 xfs_dqlock2(q[0].qt_dquot, q[1].qt_dquot);
400 xfs_trans_dqjoin(tp, q[0].qt_dquot);
401 xfs_trans_dqjoin(tp, q[1].qt_dquot);
404 for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
405 if (q[i].qt_dquot == NULL)
407 xfs_trans_dqjoin(tp, q[i].qt_dquot);
412 /* Apply dqtrx changes to the quota reservation counters. */
414 xfs_apply_quota_reservation_deltas(
415 struct xfs_dquot_res *res,
422 * Subtle math here: If reserved > res_used (the normal case),
423 * we're simply subtracting the unused transaction quota
424 * reservation from the dquot reservation.
426 * If, however, res_used > reserved, then we have allocated
427 * more quota blocks than were reserved for the transaction.
428 * We must add that excess to the dquot reservation since it
429 * tracks (usage + resv) and by definition we didn't reserve
432 res->reserved -= abs(reserved - res_used);
433 } else if (count_delta != 0) {
435 * These blks were never reserved, either inside a transaction
436 * or outside one (in a delayed allocation). Also, this isn't
437 * always a negative number since we sometimes deliberately
438 * skip quota reservations.
440 res->reserved += count_delta;
444 #ifdef CONFIG_XFS_LIVE_HOOKS
445 /* Call downstream hooks now that it's time to apply dquot deltas. */
447 xfs_trans_apply_dquot_deltas_hook(
448 struct xfs_trans *tp,
449 struct xfs_dquot *dqp)
451 if (xfs_hooks_switched_on(&xfs_dqtrx_hooks_switch)) {
452 struct xfs_apply_dqtrx_params p = {
453 .tx_id = (uintptr_t)tp,
454 .q_type = xfs_dquot_type(dqp),
457 struct xfs_quotainfo *qi = tp->t_mountp->m_quotainfo;
459 xfs_hooks_call(&qi->qi_apply_dqtrx_hooks,
460 XFS_APPLY_DQTRX_COMMIT, &p);
464 # define xfs_trans_apply_dquot_deltas_hook(tp, dqp) ((void)0)
465 #endif /* CONFIG_XFS_LIVE_HOOKS */
468 * Called by xfs_trans_commit() and similar in spirit to
469 * xfs_trans_apply_sb_deltas().
470 * Go thru all the dquots belonging to this transaction and modify the
471 * INCORE dquot to reflect the actual usages.
472 * Unreserve just the reservations done by this transaction.
473 * dquot is still left locked at exit.
476 xfs_trans_apply_dquot_deltas(
477 struct xfs_trans *tp)
480 struct xfs_dquot *dqp;
481 struct xfs_dqtrx *qtrx, *qa;
483 int64_t totalrtbdelta;
488 ASSERT(tp->t_dqinfo);
489 for (j = 0; j < XFS_QM_TRANS_DQTYPES; j++) {
490 qa = tp->t_dqinfo->dqs[j];
491 if (qa[0].qt_dquot == NULL)
495 * Lock all of the dquots and join them to the transaction.
497 xfs_trans_dqlockedjoin(tp, qa);
499 for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
500 uint64_t blk_res_used;
504 * The array of dquots is filled
505 * sequentially, not sparsely.
507 if ((dqp = qtrx->qt_dquot) == NULL)
510 ASSERT(XFS_DQ_IS_LOCKED(dqp));
512 xfs_trans_apply_dquot_deltas_hook(tp, dqp);
515 * adjust the actual number of blocks used
519 * The issue here is - sometimes we don't make a blkquota
520 * reservation intentionally to be fair to users
521 * (when the amount is small). On the other hand,
522 * delayed allocs do make reservations, but that's
523 * outside of a transaction, so we have no
524 * idea how much was really reserved.
525 * So, here we've accumulated delayed allocation blks and
526 * non-delay blks. The assumption is that the
527 * delayed ones are always reserved (outside of a
528 * transaction), and the others may or may not have
529 * quota reservations.
531 totalbdelta = qtrx->qt_bcount_delta +
532 qtrx->qt_delbcnt_delta;
533 totalrtbdelta = qtrx->qt_rtbcount_delta +
534 qtrx->qt_delrtb_delta;
536 if (totalbdelta != 0 || totalrtbdelta != 0 ||
537 qtrx->qt_icount_delta != 0) {
538 trace_xfs_trans_apply_dquot_deltas_before(dqp);
539 trace_xfs_trans_apply_dquot_deltas(qtrx);
544 ASSERT(dqp->q_blk.count >= -totalbdelta);
546 if (totalrtbdelta < 0)
547 ASSERT(dqp->q_rtb.count >= -totalrtbdelta);
549 if (qtrx->qt_icount_delta < 0)
550 ASSERT(dqp->q_ino.count >= -qtrx->qt_icount_delta);
553 dqp->q_blk.count += totalbdelta;
555 if (qtrx->qt_icount_delta)
556 dqp->q_ino.count += qtrx->qt_icount_delta;
559 dqp->q_rtb.count += totalrtbdelta;
561 if (totalbdelta != 0 || totalrtbdelta != 0 ||
562 qtrx->qt_icount_delta != 0)
563 trace_xfs_trans_apply_dquot_deltas_after(dqp);
566 * Get any default limits in use.
567 * Start/reset the timer(s) if needed.
570 xfs_qm_adjust_dqlimits(dqp);
571 xfs_qm_adjust_dqtimers(dqp);
574 dqp->q_flags |= XFS_DQFLAG_DIRTY;
576 * add this to the list of items to get logged
578 xfs_trans_log_dquot(tp, dqp);
580 * Take off what's left of the original reservation.
581 * In case of delayed allocations, there's no
582 * reservation that a transaction structure knows of.
584 blk_res_used = max_t(int64_t, 0, qtrx->qt_bcount_delta);
585 xfs_apply_quota_reservation_deltas(&dqp->q_blk,
586 qtrx->qt_blk_res, blk_res_used,
587 qtrx->qt_bcount_delta);
590 * Adjust the RT reservation.
592 xfs_apply_quota_reservation_deltas(&dqp->q_rtb,
594 qtrx->qt_rtblk_res_used,
595 qtrx->qt_rtbcount_delta);
598 * Adjust the inode reservation.
600 ASSERT(qtrx->qt_ino_res >= qtrx->qt_ino_res_used);
601 xfs_apply_quota_reservation_deltas(&dqp->q_ino,
603 qtrx->qt_ino_res_used,
604 qtrx->qt_icount_delta);
606 ASSERT(dqp->q_blk.reserved >= dqp->q_blk.count);
607 ASSERT(dqp->q_ino.reserved >= dqp->q_ino.count);
608 ASSERT(dqp->q_rtb.reserved >= dqp->q_rtb.count);
611 * We've applied the count changes and given back
612 * whatever reservation we didn't use. Zero out the
615 qtrx->qt_blk_res = 0;
616 qtrx->qt_bcount_delta = 0;
617 qtrx->qt_delbcnt_delta = 0;
619 qtrx->qt_rtblk_res = 0;
620 qtrx->qt_rtblk_res_used = 0;
621 qtrx->qt_rtbcount_delta = 0;
622 qtrx->qt_delrtb_delta = 0;
624 qtrx->qt_ino_res = 0;
625 qtrx->qt_ino_res_used = 0;
626 qtrx->qt_icount_delta = 0;
631 #ifdef CONFIG_XFS_LIVE_HOOKS
632 /* Call downstream hooks now that it's time to cancel dquot deltas. */
634 xfs_trans_unreserve_and_mod_dquots_hook(
635 struct xfs_trans *tp,
636 struct xfs_dquot *dqp)
638 if (xfs_hooks_switched_on(&xfs_dqtrx_hooks_switch)) {
639 struct xfs_apply_dqtrx_params p = {
640 .tx_id = (uintptr_t)tp,
641 .q_type = xfs_dquot_type(dqp),
644 struct xfs_quotainfo *qi = tp->t_mountp->m_quotainfo;
646 xfs_hooks_call(&qi->qi_apply_dqtrx_hooks,
647 XFS_APPLY_DQTRX_UNRESERVE, &p);
651 # define xfs_trans_unreserve_and_mod_dquots_hook(tp, dqp) ((void)0)
652 #endif /* CONFIG_XFS_LIVE_HOOKS */
655 * Release the reservations, and adjust the dquots accordingly.
656 * This is called only when the transaction is being aborted. If by
657 * any chance we have done dquot modifications incore (ie. deltas) already,
658 * we simply throw those away, since that's the expected behavior
659 * when a transaction is curtailed without a commit.
662 xfs_trans_unreserve_and_mod_dquots(
663 struct xfs_trans *tp,
667 struct xfs_dquot *dqp;
668 struct xfs_dqtrx *qtrx, *qa;
674 for (j = 0; j < XFS_QM_TRANS_DQTYPES; j++) {
675 qa = tp->t_dqinfo->dqs[j];
677 for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
680 * We assume that the array of dquots is filled
681 * sequentially, not sparsely.
683 if ((dqp = qtrx->qt_dquot) == NULL)
686 xfs_trans_unreserve_and_mod_dquots_hook(tp, dqp);
689 * Unreserve the original reservation. We don't care
690 * about the number of blocks used field, or deltas.
691 * Also we don't bother to zero the fields.
693 locked = already_locked;
694 if (qtrx->qt_blk_res) {
699 dqp->q_blk.reserved -=
700 (xfs_qcnt_t)qtrx->qt_blk_res;
702 if (qtrx->qt_ino_res) {
707 dqp->q_ino.reserved -=
708 (xfs_qcnt_t)qtrx->qt_ino_res;
711 if (qtrx->qt_rtblk_res) {
716 dqp->q_rtb.reserved -=
717 (xfs_qcnt_t)qtrx->qt_rtblk_res;
719 if (locked && !already_locked)
728 struct xfs_mount *mp,
729 struct xfs_dquot *dqp,
732 enum quota_type qtype;
734 switch (xfs_dquot_type(dqp)) {
735 case XFS_DQTYPE_PROJ:
738 case XFS_DQTYPE_USER:
741 case XFS_DQTYPE_GROUP:
748 quota_send_warning(make_kqid(&init_user_ns, qtype, dqp->q_id),
749 mp->m_super->s_dev, type);
753 * Decide if we can make an additional reservation against a quota resource.
754 * Returns an inode QUOTA_NL_ warning code and whether or not it's fatal.
756 * Note that we assume that the numeric difference between the inode and block
757 * warning codes will always be 3 since it's userspace ABI now, and will never
758 * decrease the quota reservation, so the *BELOW messages are irrelevant.
762 struct xfs_dquot_res *res,
763 struct xfs_quota_limits *qlim,
767 xfs_qcnt_t hardlimit = res->hardlimit;
768 xfs_qcnt_t softlimit = res->softlimit;
769 xfs_qcnt_t total_count = res->reserved + delta;
771 BUILD_BUG_ON(QUOTA_NL_BHARDWARN != QUOTA_NL_IHARDWARN + 3);
772 BUILD_BUG_ON(QUOTA_NL_BSOFTLONGWARN != QUOTA_NL_ISOFTLONGWARN + 3);
773 BUILD_BUG_ON(QUOTA_NL_BSOFTWARN != QUOTA_NL_ISOFTWARN + 3);
777 return QUOTA_NL_NOWARN;
780 hardlimit = qlim->hard;
782 softlimit = qlim->soft;
784 if (hardlimit && total_count > hardlimit) {
786 return QUOTA_NL_IHARDWARN;
789 if (softlimit && total_count > softlimit) {
790 time64_t now = ktime_get_real_seconds();
792 if (res->timer != 0 && now > res->timer) {
794 return QUOTA_NL_ISOFTLONGWARN;
797 return QUOTA_NL_ISOFTWARN;
800 return QUOTA_NL_NOWARN;
804 * This reserves disk blocks and inodes against a dquot.
805 * Flags indicate if the dquot is to be locked here and also
806 * if the blk reservation is for RT or regular blocks.
807 * Sending in XFS_QMOPT_FORCE_RES flag skips the quota check.
811 struct xfs_trans *tp,
812 struct xfs_mount *mp,
813 struct xfs_dquot *dqp,
818 struct xfs_quotainfo *q = mp->m_quotainfo;
819 struct xfs_def_quota *defq;
820 struct xfs_dquot_res *blkres;
821 struct xfs_quota_limits *qlim;
825 defq = xfs_get_defquota(q, xfs_dquot_type(dqp));
827 if (flags & XFS_TRANS_DQ_RES_BLKS) {
828 blkres = &dqp->q_blk;
831 blkres = &dqp->q_rtb;
835 if ((flags & XFS_QMOPT_FORCE_RES) == 0 && dqp->q_id &&
836 xfs_dquot_is_enforced(dqp)) {
841 * dquot is locked already. See if we'd go over the hardlimit
842 * or exceed the timelimit if we'd reserve resources.
844 quota_nl = xfs_dqresv_check(blkres, qlim, nblks, &fatal);
845 if (quota_nl != QUOTA_NL_NOWARN) {
847 * Quota block warning codes are 3 more than the inode
848 * codes, which we check above.
850 xfs_quota_warn(mp, dqp, quota_nl + 3);
855 quota_nl = xfs_dqresv_check(&dqp->q_ino, &defq->ino, ninos,
857 if (quota_nl != QUOTA_NL_NOWARN) {
858 xfs_quota_warn(mp, dqp, quota_nl);
865 * Change the reservation, but not the actual usage.
866 * Note that q_blk.reserved = q_blk.count + resv
868 blkres->reserved += (xfs_qcnt_t)nblks;
869 dqp->q_ino.reserved += (xfs_qcnt_t)ninos;
872 * note the reservation amt in the trans struct too,
873 * so that the transaction knows how much was reserved by
874 * it against this particular dquot.
875 * We don't do this when we are reserving for a delayed allocation,
876 * because we don't have the luxury of a transaction envelope then.
879 ASSERT(flags & XFS_QMOPT_RESBLK_MASK);
880 xfs_trans_mod_dquot(tp, dqp, flags & XFS_QMOPT_RESBLK_MASK,
882 xfs_trans_mod_dquot(tp, dqp, XFS_TRANS_DQ_RES_INOS, ninos);
885 if (XFS_IS_CORRUPT(mp, dqp->q_blk.reserved < dqp->q_blk.count) ||
886 XFS_IS_CORRUPT(mp, dqp->q_rtb.reserved < dqp->q_rtb.count) ||
887 XFS_IS_CORRUPT(mp, dqp->q_ino.reserved < dqp->q_ino.count))
895 if (xfs_dquot_type(dqp) == XFS_DQTYPE_PROJ)
900 xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
901 xfs_fs_mark_sick(mp, XFS_SICK_FS_QUOTACHECK);
902 return -EFSCORRUPTED;
907 * Given dquot(s), make disk block and/or inode reservations against them.
908 * The fact that this does the reservation against user, group and
909 * project quotas is important, because this follows a all-or-nothing
912 * flags = XFS_QMOPT_FORCE_RES evades limit enforcement. Used by chown.
913 * XFS_QMOPT_ENOSPC returns ENOSPC not EDQUOT. Used by pquota.
914 * XFS_TRANS_DQ_RES_BLKS reserves regular disk blocks
915 * XFS_TRANS_DQ_RES_RTBLKS reserves realtime disk blocks
916 * dquots are unlocked on return, if they were not locked by caller.
919 xfs_trans_reserve_quota_bydquots(
920 struct xfs_trans *tp,
921 struct xfs_mount *mp,
922 struct xfs_dquot *udqp,
923 struct xfs_dquot *gdqp,
924 struct xfs_dquot *pdqp,
931 if (!XFS_IS_QUOTA_ON(mp))
934 ASSERT(flags & XFS_QMOPT_RESBLK_MASK);
937 error = xfs_trans_dqresv(tp, mp, udqp, nblks, ninos, flags);
943 error = xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos, flags);
949 error = xfs_trans_dqresv(tp, mp, pdqp, nblks, ninos, flags);
955 * Didn't change anything critical, so, no need to log
960 flags |= XFS_QMOPT_FORCE_RES;
962 xfs_trans_dqresv(tp, mp, gdqp, -nblks, -ninos, flags);
964 flags |= XFS_QMOPT_FORCE_RES;
966 xfs_trans_dqresv(tp, mp, udqp, -nblks, -ninos, flags);
972 * Lock the dquot and change the reservation if we can.
973 * This doesn't change the actual usage, just the reservation.
974 * The inode sent in is locked.
977 xfs_trans_reserve_quota_nblks(
978 struct xfs_trans *tp,
979 struct xfs_inode *ip,
984 struct xfs_mount *mp = ip->i_mount;
985 unsigned int qflags = 0;
988 if (!XFS_IS_QUOTA_ON(mp))
990 if (xfs_is_metadir_inode(ip))
993 ASSERT(!xfs_is_quota_inode(&mp->m_sb, ip->i_ino));
994 xfs_assert_ilocked(ip, XFS_ILOCK_EXCL);
997 qflags |= XFS_QMOPT_FORCE_RES;
999 /* Reserve data device quota against the inode's dquots. */
1000 error = xfs_trans_reserve_quota_bydquots(tp, mp, ip->i_udquot,
1001 ip->i_gdquot, ip->i_pdquot, dblocks, 0,
1002 XFS_QMOPT_RES_REGBLKS | qflags);
1006 /* Do the same but for realtime blocks. */
1007 error = xfs_trans_reserve_quota_bydquots(tp, mp, ip->i_udquot,
1008 ip->i_gdquot, ip->i_pdquot, rblocks, 0,
1009 XFS_QMOPT_RES_RTBLKS | qflags);
1011 xfs_trans_reserve_quota_bydquots(tp, mp, ip->i_udquot,
1012 ip->i_gdquot, ip->i_pdquot, -dblocks, 0,
1013 XFS_QMOPT_RES_REGBLKS);
1020 /* Change the quota reservations for an inode creation activity. */
1022 xfs_trans_reserve_quota_icreate(
1023 struct xfs_trans *tp,
1024 struct xfs_dquot *udqp,
1025 struct xfs_dquot *gdqp,
1026 struct xfs_dquot *pdqp,
1029 struct xfs_mount *mp = tp->t_mountp;
1031 if (!XFS_IS_QUOTA_ON(mp))
1034 return xfs_trans_reserve_quota_bydquots(tp, mp, udqp, gdqp, pdqp,
1035 dblocks, 1, XFS_QMOPT_RES_REGBLKS);
1039 xfs_trans_alloc_dqinfo(
1042 tp->t_dqinfo = kmem_cache_zalloc(xfs_dqtrx_cache,
1043 GFP_KERNEL | __GFP_NOFAIL);
1047 xfs_trans_free_dqinfo(
1052 kmem_cache_free(xfs_dqtrx_cache, tp->t_dqinfo);
1053 tp->t_dqinfo = NULL;
1057 xfs_quota_reserve_blkres(
1058 struct xfs_inode *ip,
1061 if (XFS_IS_REALTIME_INODE(ip))
1062 return xfs_trans_reserve_quota_nblks(NULL, ip, 0, blocks,
1064 return xfs_trans_reserve_quota_nblks(NULL, ip, blocks, 0, false);