4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 021110-1307, USA
24 * Copyright (c) 2012 Intel, Inc.
25 * Use is subject to license terms.
27 * Author: Johann Lombardi <johann.lombardi@intel.com>
28 * Author: Niu Yawei <yawei.niu@intel.com>
32 # define EXPORT_SYMTAB
35 #define DEBUG_SUBSYSTEM S_LQUOTA
37 #include <obd_class.h>
38 #include "qmt_internal.h"
41 * Fetch grace time for either inode or block.
43 * \param env - is the environment passed by the caller
44 * \param qmt - is the quota master target
45 * \param pool_id - is the 16-bit pool identifier
46 * \param restype - is the pool type, either block (i.e. LQUOTA_RES_DT) or inode
47 * (i.e. LQUOTA_RES_MD)
48 * \param qtype - is the quota type
49 * \param time - is the output variable where to copy the grace time
51 static int qmt_getinfo(const struct lu_env *env, struct qmt_device *qmt,
52 __u16 pool_id, __u8 restype, __u8 qtype, __u64 *time)
54 struct qmt_thread_info *qti = qmt_info(env);
55 union lquota_id *id = &qti->qti_id;
56 struct lquota_entry *lqe;
59 /* Global grace time is stored in quota settings of ID 0. */
62 /* look-up quota entry storing grace time */
63 lqe = qmt_pool_lqe_lookup(env, qmt, pool_id, restype, qtype, id);
68 LQUOTA_DEBUG(lqe, "getinfo");
70 *time = lqe->lqe_gracetime;
78 * Update grace time for either inode or block.
79 * Global grace time is stored in quota settings of ID 0.
81 * \param env - is the environment passed by the caller
82 * \param qmt - is the quota master target
83 * \param pool_id - is the 16-bit pool identifier
84 * \param restype - is the pool type, either block (i.e. LQUOTA_RES_DT) or inode
85 * (i.e. LQUOTA_RES_MD)
86 * \param qtype - is the quota type
87 * \param time - is the new grace time
89 static int qmt_setinfo(const struct lu_env *env, struct qmt_device *qmt,
90 __u16 pool_id, __u8 restype, __u8 qtype, __u64 time)
92 struct qmt_thread_info *qti = qmt_info(env);
93 union lquota_id *id = &qti->qti_id;
94 struct lquota_entry *lqe;
95 struct thandle *th = NULL;
99 /* Global grace time is stored in quota settings of ID 0. */
102 /* look-up quota entry storing the global grace time */
103 lqe = qmt_pool_lqe_lookup(env, qmt, pool_id, restype, qtype, id);
105 RETURN(PTR_ERR(lqe));
107 /* allocate & start transaction with enough credits to update grace
108 * time in the global index file */
109 th = qmt_trans_start(env, lqe, &qti->qti_restore);
111 GOTO(out_nolock, rc = PTR_ERR(th));
113 /* write lock quota entry storing the grace time */
115 if (lqe->lqe_gracetime == time)
116 /* grace time is the same */
119 LQUOTA_DEBUG(lqe, "setinfo time:"LPU64, time);
121 /* set new grace time */
122 lqe->lqe_gracetime = time;
123 /* always set enforced bit for ID 0 to make sure it does not go away */
124 lqe->lqe_enforced = true;
126 /* write new grace time to disk, no need for version bump */
127 rc = qmt_glb_write(env, th, lqe, 0, NULL);
129 /* restore initial grace time */
130 qmt_restore(lqe, &qti->qti_restore);
135 lqe_write_unlock(lqe);
138 if (th != NULL && !IS_ERR(th))
139 dt_trans_stop(env, qmt->qmt_child, th);
144 * Retrieve quota settings for a given identifier.
146 * \param env - is the environment passed by the caller
147 * \param qmt - is the quota master target
148 * \param pool_id - is the 16-bit pool identifier
149 * \param restype - is the pool type, either block (i.e. LQUOTA_RES_DT) or inode
150 * (i.e. LQUOTA_RES_MD)
151 * \param qtype - is the quota type
152 * \param id - is the quota indentifier for which we want to acces quota
154 * \param hard - is the output variable where to copy the hard limit
155 * \param soft - is the output variable where to copy the soft limit
156 * \param time - is the output variable where to copy the grace time
158 static int qmt_getquota(const struct lu_env *env, struct qmt_device *qmt,
159 __u16 pool_id, __u8 restype, __u8 qtype,
160 union lquota_id *id, __u64 *hard, __u64 *soft,
163 struct lquota_entry *lqe;
166 /* look-up lqe structure containing quota settings */
167 lqe = qmt_pool_lqe_lookup(env, qmt, pool_id, restype, qtype, id);
169 RETURN(PTR_ERR(lqe));
171 /* copy quota settings */
173 LQUOTA_DEBUG(lqe, "getquota");
174 *hard = lqe->lqe_hardlimit;
175 *soft = lqe->lqe_softlimit;
176 *time = lqe->lqe_gracetime;
177 lqe_read_unlock(lqe);
184 * Update quota settings for a given identifier.
186 * \param env - is the environment passed by the caller
187 * \param qmt - is the quota master target
188 * \param pool_id - is the 16-bit pool identifier
189 * \param restype - is the pool type, either block (i.e. LQUOTA_RES_DT) or inode
190 * (i.e. LQUOTA_RES_MD)
191 * \param qtype - is the quota type
192 * \param id - is the quota indentifier for which we want to modify quota
194 * \param hard - is the new hard limit
195 * \param soft - is the new soft limit
196 * \param time - is the new grace time
197 * \param valid - is the list of settings to change
199 static int qmt_setquota(const struct lu_env *env, struct qmt_device *qmt,
200 __u16 pool_id, __u8 restype, __u8 qtype,
201 union lquota_id *id, __u64 hard, __u64 soft, __u64 time,
204 struct qmt_thread_info *qti = qmt_info(env);
205 struct lquota_entry *lqe;
206 struct thandle *th = NULL;
208 bool dirtied = false, bump_version = false;
212 /* look-up quota entry associated with this ID */
213 lqe = qmt_pool_lqe_lookup(env, qmt, pool_id, restype, qtype, id);
215 RETURN(PTR_ERR(lqe));
217 /* allocate & start transaction with enough credits to update quota
218 * settings in the global index file */
219 th = qmt_trans_start(env, lqe, &qti->qti_restore);
221 GOTO(out_nolock, rc = PTR_ERR(th));
223 now = cfs_time_current_sec();
226 LQUOTA_DEBUG(lqe, "setquota valid:%x hard:"LPU64" soft:"LPU64
227 " time:"LPU64, valid, hard, soft, time);
229 if ((valid & QIF_TIMES) != 0 && lqe->lqe_gracetime != time) {
230 /* change time settings */
231 lqe->lqe_gracetime = time;
235 if ((valid & QIF_LIMITS) != 0 &&
236 (lqe->lqe_hardlimit != hard || lqe->lqe_softlimit != soft)) {
237 bool enforced = lqe->lqe_enforced;
239 rc = qmt_validate_limits(lqe, hard, soft);
243 /* recompute qunit in case it was never initialized */
244 qmt_revalidate(env, lqe);
246 /* change quota limits */
247 lqe->lqe_hardlimit = hard;
248 lqe->lqe_softlimit = soft;
250 /* clear grace time */
251 if (lqe->lqe_softlimit == 0 ||
252 lqe->lqe_granted <= lqe->lqe_softlimit)
253 /* no soft limit or below soft limit, let's clear grace
255 lqe->lqe_gracetime = 0;
256 else if ((valid & QIF_TIMES) == 0)
257 /* set grace only if user hasn't provided his own */
258 lqe->lqe_gracetime = now + qmt_lqe_grace(lqe);
260 /* change enforced status based on new parameters */
261 if (lqe->lqe_hardlimit == 0 && lqe->lqe_softlimit == 0)
262 lqe->lqe_enforced = false;
264 lqe->lqe_enforced = true;
266 if ((enforced && !lqe->lqe_enforced) ||
267 (!enforced && lqe->lqe_enforced))
268 /* if enforced status has changed, we need to inform
269 * slave, therefore we need to bump the version */
276 /* write new quota settings to disk */
277 rc = qmt_glb_write(env, th, lqe,
278 bump_version ? LQUOTA_BUMP_VER : 0, &ver);
280 /* restore initial quota settings */
281 qmt_restore(lqe, &qti->qti_restore);
285 /* compute new qunit value now that we have modified the quota
287 qmt_adjust_qunit(env, lqe);
289 /* clear/set edquot flag as needed */
290 qmt_adjust_edquot(lqe, now);
294 lqe_write_unlock(lqe);
298 if (th != NULL && !IS_ERR(th))
299 dt_trans_stop(env, qmt->qmt_child, th);
301 if (rc == 0 && bump_version)
302 qmt_glb_lock_notify(env, lqe, ver);
308 * Handle quotactl request.
310 * \param env - is the environment passed by the caller
311 * \param ld - is the lu device associated with the qmt
312 * \param oqctl - is the quotactl request
314 static int qmt_quotactl(const struct lu_env *env, struct lu_device *ld,
315 struct obd_quotactl *oqctl)
317 struct qmt_thread_info *qti = qmt_info(env);
318 union lquota_id *id = &qti->qti_id;
319 struct qmt_device *qmt = lu2qmt_dev(ld);
320 struct obd_dqblk *dqb = &oqctl->qc_dqblk;
324 LASSERT(qmt != NULL);
326 if (oqctl->qc_type >= MAXQUOTAS)
327 /* invalid quota type */
330 switch (oqctl->qc_cmd) {
332 case Q_GETINFO: /* read grace times */
333 /* read inode grace time */
334 rc = qmt_getinfo(env, qmt, 0, LQUOTA_RES_MD, oqctl->qc_type,
335 &oqctl->qc_dqinfo.dqi_igrace);
339 /* read block grace time */
340 rc = qmt_getinfo(env, qmt, 0, LQUOTA_RES_DT, oqctl->qc_type,
341 &oqctl->qc_dqinfo.dqi_bgrace);
344 case Q_SETINFO: /* modify grace times */
345 /* setinfo should be using dqi->dqi_valid, but lfs incorrectly
346 * sets the valid flags in dqb->dqb_valid instead, try to live
348 if ((dqb->dqb_valid & QIF_ITIME) != 0) {
349 /* set inode grace time */
350 rc = qmt_setinfo(env, qmt, 0, LQUOTA_RES_MD,
352 oqctl->qc_dqinfo.dqi_igrace);
357 if ((dqb->dqb_valid & QIF_BTIME) != 0)
358 /* set block grace time */
359 rc = qmt_setinfo(env, qmt, 0, LQUOTA_RES_DT,
361 oqctl->qc_dqinfo.dqi_bgrace);
364 case Q_GETQUOTA: /* consult quota limit */
365 /* There is no quota limit for root user & group */
366 if (oqctl->qc_id == 0) {
367 memset(dqb, 0, sizeof(*dqb));
368 dqb->dqb_valid = QIF_LIMITS | QIF_TIMES;
371 /* extract quota ID from quotactl request */
372 id->qid_uid = oqctl->qc_id;
374 /* look-up inode quota settings */
375 rc = qmt_getquota(env, qmt, 0, LQUOTA_RES_MD, oqctl->qc_type,
376 id, &dqb->dqb_ihardlimit,
377 &dqb->dqb_isoftlimit, &dqb->dqb_itime);
381 dqb->dqb_valid |= QIF_ILIMITS | QIF_ITIME;
382 /* master isn't aware of actual inode usage */
383 dqb->dqb_curinodes = 0;
385 /* look-up block quota settings */
386 rc = qmt_getquota(env, qmt, 0, LQUOTA_RES_DT, oqctl->qc_type,
387 id, &dqb->dqb_bhardlimit,
388 &dqb->dqb_bsoftlimit, &dqb->dqb_btime);
392 dqb->dqb_valid |= QIF_BLIMITS | QIF_BTIME;
393 /* master doesn't know the actual block usage */
394 dqb->dqb_curspace = 0;
397 case Q_SETQUOTA: /* change quota limits */
398 if (oqctl->qc_id == 0)
399 /* can't enforce a quota limit for root user & group */
401 /* extract quota ID from quotactl request */
402 id->qid_uid = oqctl->qc_id;
404 if ((dqb->dqb_valid & QIF_IFLAGS) != 0) {
405 /* update inode quota settings */
406 rc = qmt_setquota(env, qmt, 0, LQUOTA_RES_MD,
409 dqb->dqb_isoftlimit, dqb->dqb_itime,
410 dqb->dqb_valid & QIF_IFLAGS);
415 if ((dqb->dqb_valid & QIF_BFLAGS) != 0)
416 /* update block quota settings */
417 rc = qmt_setquota(env, qmt, 0, LQUOTA_RES_DT,
420 dqb->dqb_bsoftlimit, dqb->dqb_btime,
421 dqb->dqb_valid & QIF_BFLAGS);
425 case Q_QUOTAOFF: /* quota is always turned on on the master */
428 case LUSTRE_Q_INVALIDATE: /* not supported any more */
432 CERROR("%s: unsupported quotactl command: %d\n",
433 qmt->qmt_svname, oqctl->qc_cmd);
441 * Helper function to handle quota request from slave.
443 * \param env - is the environment passed by the caller
444 * \param lqe - is the lquota_entry subject to the quota request
445 * \param qmt - is the master device
446 * \param uuid - is the uuid associated with the slave
447 * \param qb_flags - are the quota request flags as packed in the quota_body
448 * \param qb_count - is the amount of quota space the slave wants to
450 * \param qb_usage - is the current space usage on the slave
451 * \param repbody - is the quota_body of reply
453 * \retval 0 : success
454 * \retval -EDQUOT : out of quota
455 * -EINPROGRESS : inform client to retry write/create
456 * -ve : other appropriate errors
458 int qmt_dqacq0(const struct lu_env *env, struct lquota_entry *lqe,
459 struct qmt_device *qmt, struct obd_uuid *uuid, __u32 qb_flags,
460 __u64 qb_count, __u64 qb_usage, struct quota_body *repbody)
462 struct qmt_thread_info *qti = qmt_info(env);
464 struct dt_object *slv_obj = NULL;
465 __u64 slv_granted, slv_granted_bck;
466 struct thandle *th = NULL;
470 LASSERT(uuid != NULL);
472 /* initialize reply */
473 memset(repbody, 0, sizeof(*repbody));
474 memcpy(&repbody->qb_id, &lqe->lqe_id, sizeof(repbody->qb_id));
476 if (OBD_FAIL_CHECK(OBD_FAIL_QUOTA_RECOVERABLE_ERR))
477 RETURN(-cfs_fail_val);
479 /* look-up index file associated with acquiring slave */
480 slv_obj = lquota_disk_slv_find(env, qmt->qmt_child, LQE_ROOT(lqe),
481 lu_object_fid(&LQE_GLB_OBJ(lqe)->do_lu),
484 GOTO(out, rc = PTR_ERR(slv_obj));
486 /* pack slave fid in reply just for sanity check */
487 memcpy(&repbody->qb_slv_fid, lu_object_fid(&slv_obj->do_lu),
488 sizeof(struct lu_fid));
490 /* allocate & start transaction with enough credits to update
491 * global & slave indexes */
492 th = qmt_trans_start_with_slv(env, lqe, slv_obj, &qti->qti_restore);
494 GOTO(out, rc = PTR_ERR(th));
497 LQUOTA_DEBUG(lqe, "dqacq starts uuid:%s flags:0x%x wanted:"LPU64
498 " usage:"LPU64, obd_uuid2str(uuid), qb_flags, qb_count,
501 /* Legal race, limits have been removed on master, but slave didn't
502 * receive the change yet. Just return EINPROGRESS until the slave gets
504 if (!lqe->lqe_enforced && !req_is_rel(qb_flags))
505 GOTO(out_locked, rc = -EINPROGRESS);
507 /* recompute qunit in case it was never initialized */
508 qmt_revalidate(env, lqe);
510 /* slave just wants to acquire per-ID lock */
511 if (req_is_acq(qb_flags) && qb_count == 0)
512 GOTO(out_locked, rc = 0);
514 /* fetch how much quota space is already granted to this slave */
515 rc = qmt_slv_read(env, lqe, slv_obj, &slv_granted);
517 LQUOTA_ERROR(lqe, "Failed to get granted for slave %s, rc=%d",
518 obd_uuid2str(uuid), rc);
519 GOTO(out_locked, rc);
521 /* recall how much space this slave currently owns in order to restore
522 * it in case of failure */
523 slv_granted_bck = slv_granted;
525 /* record current time for soft limit & grace time management */
526 now = (__u64)cfs_time_current_sec();
528 if (req_is_rel(qb_flags)) {
529 /* Slave would like to release quota space */
530 if (slv_granted < qb_count ||
531 lqe->lqe_granted < qb_count) {
532 /* can't release more than granted */
533 LQUOTA_ERROR(lqe, "Release too much! uuid:%s release:"
534 LPU64" granted:"LPU64", total:"LPU64,
535 obd_uuid2str(uuid), qb_count,
536 slv_granted, lqe->lqe_granted);
537 GOTO(out_locked, rc = -EINVAL);
540 repbody->qb_count = qb_count;
541 /* put released space back to global pool */
542 QMT_REL(lqe, slv_granted, qb_count);
543 GOTO(out_write, rc = 0);
546 if (req_has_rep(qb_flags) && slv_granted < qb_usage) {
547 /* Slave is reporting space usage in quota request and it turns
548 * out to be using more quota space than owned, so we adjust
549 * granted space regardless of the current state of affairs */
550 repbody->qb_count = qb_usage - slv_granted;
551 QMT_GRANT(lqe, slv_granted, repbody->qb_count);
554 if (!req_is_acq(qb_flags) && !req_is_preacq(qb_flags))
555 GOTO(out_write, rc = 0);
557 qmt_adjust_edquot(lqe, now);
559 /* no hope to claim further space back */
560 GOTO(out_write, rc = -EDQUOT);
562 if (qmt_space_exhausted(lqe, now)) {
563 /* might have some free space once rebalancing is completed */
564 rc = req_is_acq(qb_flags) ? -EINPROGRESS : -EDQUOT;
568 if (req_is_preacq(qb_flags)) {
569 /* slave would like to pre-acquire quota space. To do so, it
570 * reports in qb_count how much spare quota space it owns and we
571 * can grant back quota space which is consistent with qunit
574 if (qb_count >= lqe->lqe_qunit)
575 /* slave already own the maximum it should */
576 GOTO(out_write, rc = 0);
578 count = qmt_alloc_expand(lqe, slv_granted, qb_count);
580 GOTO(out_write, rc = -EDQUOT);
582 repbody->qb_count += count;
583 QMT_GRANT(lqe, slv_granted, count);
584 GOTO(out_write, rc = 0);
587 /* processing acquire request with clients waiting */
588 if (lqe->lqe_hardlimit != 0 &&
589 lqe->lqe_granted + qb_count > lqe->lqe_hardlimit) {
590 /* cannot grant as much as asked, but can still afford to grant
591 * some quota space back */
592 count = lqe->lqe_hardlimit - lqe->lqe_granted;
593 repbody->qb_count += count;
594 QMT_GRANT(lqe, slv_granted, count);
595 GOTO(out_write, rc = 0);
598 /* Whouhou! we can satisfy the slave request! */
599 repbody->qb_count += qb_count;
600 QMT_GRANT(lqe, slv_granted, qb_count);
602 /* Try to expand the acquired count for DQACQ */
603 count = qmt_alloc_expand(lqe, slv_granted, 0);
605 /* can even grant more than asked, it is like xmas ... */
606 repbody->qb_count += count;
607 QMT_GRANT(lqe, slv_granted, count);
608 GOTO(out_write, rc = 0);
611 GOTO(out_write, rc = 0);
613 if (repbody->qb_count == 0)
614 GOTO(out_locked, rc);
616 /* start/stop grace timer if required */
617 if (lqe->lqe_softlimit != 0) {
618 if (lqe->lqe_granted > lqe->lqe_softlimit &&
619 lqe->lqe_gracetime == 0)
620 /* first time over soft limit, let's start grace
622 lqe->lqe_gracetime = now + qmt_lqe_grace(lqe);
623 else if (lqe->lqe_granted <= lqe->lqe_softlimit &&
624 lqe->lqe_gracetime != 0)
625 /* Clear grace timer */
626 lqe->lqe_gracetime = 0;
629 /* Update slave index first since it is easier to roll back */
630 ret = qmt_slv_write(env, th, lqe, slv_obj, LQUOTA_BUMP_VER,
631 &repbody->qb_slv_ver, slv_granted);
633 /* restore initial quota settings */
634 qmt_restore(lqe, &qti->qti_restore);
636 repbody->qb_count = 0;
637 GOTO(out_locked, rc = ret);
640 /* Update global index, no version bump needed */
641 ret = qmt_glb_write(env, th, lqe, 0, NULL);
644 /* restore initial quota settings */
645 qmt_restore(lqe, &qti->qti_restore);
647 repbody->qb_count = 0;
649 /* restore previous granted value */
650 ret = qmt_slv_write(env, th, lqe, slv_obj, 0, NULL,
653 LQUOTA_ERROR(lqe, "failed to restore initial slave "
654 "value rc:%d ret%d", rc, ret);
657 qmt_adjust_edquot(lqe, now);
658 GOTO(out_locked, rc);
661 /* Total granted has been changed, let's try to adjust the qunit
662 * size according to the total granted & limits. */
663 qmt_adjust_qunit(env, lqe);
665 /* clear/set edquot flag and notify slaves via glimpse if needed */
666 qmt_adjust_edquot(lqe, now);
668 LQUOTA_DEBUG(lqe, "dqacq ends count:"LPU64" ver:"LPU64" rc:%d",
669 repbody->qb_count, repbody->qb_slv_ver, rc);
670 lqe_write_unlock(lqe);
672 if (th != NULL && !IS_ERR(th))
673 dt_trans_stop(env, qmt->qmt_child, th);
675 if (slv_obj != NULL && !IS_ERR(slv_obj))
676 lu_object_put(env, &slv_obj->do_lu);
678 if ((req_is_acq(qb_flags) || req_is_preacq(qb_flags)) &&
679 OBD_FAIL_CHECK(OBD_FAIL_QUOTA_EDQUOT)) {
680 /* introduce inconsistency between granted value in slave index
681 * and slave index copy of slave */
682 repbody->qb_count = 0;
690 * Handle quota request from slave.
692 * \param env - is the environment passed by the caller
693 * \param ld - is the lu device associated with the qmt
694 * \param req - is the quota acquire request
696 static int qmt_dqacq(const struct lu_env *env, struct lu_device *ld,
697 struct ptlrpc_request *req)
699 struct qmt_device *qmt = lu2qmt_dev(ld);
700 struct quota_body *qbody, *repbody;
701 struct obd_uuid *uuid;
702 struct ldlm_lock *lock;
703 struct lquota_entry *lqe;
704 int pool_id, pool_type, qtype;
708 qbody = req_capsule_client_get(&req->rq_pill, &RMF_QUOTA_BODY);
710 RETURN(err_serious(-EPROTO));
712 repbody = req_capsule_server_get(&req->rq_pill, &RMF_QUOTA_BODY);
714 RETURN(err_serious(-EFAULT));
716 /* verify if global lock is stale */
717 if (!lustre_handle_is_used(&qbody->qb_glb_lockh))
720 lock = ldlm_handle2lock(&qbody->qb_glb_lockh);
725 uuid = &req->rq_export->exp_client_uuid;
727 if (req_is_rel(qbody->qb_flags) + req_is_acq(qbody->qb_flags) +
728 req_is_preacq(qbody->qb_flags) > 1) {
729 CERROR("%s: malformed quota request with conflicting flags set "
730 "(%x) from slave %s\n", qmt->qmt_svname,
731 qbody->qb_flags, obd_uuid2str(uuid));
735 if (req_is_acq(qbody->qb_flags) || req_is_preacq(qbody->qb_flags)) {
736 /* acquire and pre-acquire should use a valid ID lock */
738 if (!lustre_handle_is_used(&qbody->qb_lockh))
741 lock = ldlm_handle2lock(&qbody->qb_lockh);
743 /* no lock associated with this handle */
746 LDLM_DEBUG(lock, "%sacquire request",
747 req_is_preacq(qbody->qb_flags) ? "pre" : "");
749 if (!obd_uuid_equals(&lock->l_export->exp_client_uuid, uuid)) {
750 /* sorry, no way to cheat ... */
755 if ((lock->l_flags & LDLM_FL_AST_SENT) != 0) {
756 struct ptlrpc_service_part *svc;
757 unsigned int timeout;
759 svc = req->rq_rqbd->rqbd_svcpt;
760 timeout = at_est2timeout(at_get(&svc->scp_at_estimate));
761 timeout = max(timeout, ldlm_timeout);
763 /* lock is being cancelled, prolong timeout */
764 ldlm_refresh_waiting_lock(lock, timeout);
769 /* extract pool & quota information from global index FID packed in the
771 rc = lquota_extract_fid(&qbody->qb_fid, &pool_id, &pool_type, &qtype);
775 /* Find the quota entry associated with the quota id */
776 lqe = qmt_pool_lqe_lookup(env, qmt, pool_id, pool_type, qtype,
779 RETURN(PTR_ERR(lqe));
781 /* process quota request */
782 rc = qmt_dqacq0(env, lqe, qmt, uuid, qbody->qb_flags, qbody->qb_count,
783 qbody->qb_usage, repbody);
785 if (lustre_handle_is_used(&qbody->qb_lockh))
786 /* return current qunit value only to slaves owning an per-ID
787 * quota lock. For enqueue, the qunit value will be returned in
789 repbody->qb_qunit = lqe->lqe_qunit;
794 /* Vector of quota request handlers. This vector is used by the MDT to forward
795 * requests to the quota master. */
796 struct qmt_handlers qmt_hdls = {
797 /* quota request handlers */
798 .qmth_quotactl = qmt_quotactl,
799 .qmth_dqacq = qmt_dqacq,
802 .qmth_intent_policy = qmt_intent_policy,
803 .qmth_lvbo_init = qmt_lvbo_init,
804 .qmth_lvbo_update = qmt_lvbo_update,
805 .qmth_lvbo_size = qmt_lvbo_size,
806 .qmth_lvbo_fill = qmt_lvbo_fill,
807 .qmth_lvbo_free = qmt_lvbo_free,
809 EXPORT_SYMBOL(qmt_hdls);