1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
38 # define EXPORT_SYMTAB
40 #define DEBUG_SUBSYSTEM S_LQUOTA
43 # include <linux/version.h>
44 # include <linux/module.h>
45 # include <linux/init.h>
46 # include <linux/fs.h>
47 # include <linux/jbd.h>
48 # include <linux/smp_lock.h>
49 # include <linux/buffer_head.h>
50 # include <linux/workqueue.h>
51 # include <linux/mount.h>
52 #else /* __KERNEL__ */
53 # include <liblustre.h>
56 #include <obd_class.h>
57 #include <lustre_mds.h>
58 #include <lustre_dlm.h>
59 #include <lustre_cfg.h>
61 #include <lustre_fsfilt.h>
62 #include <lustre_quota.h>
63 #include <lprocfs_status.h>
64 #include "quota_internal.h"
68 #ifdef HAVE_QUOTA_SUPPORT
70 static cfs_time_t last_print = 0;
71 static spinlock_t last_print_lock = SPIN_LOCK_UNLOCKED;
73 static int filter_quota_setup(struct obd_device *obd)
76 struct obd_device_target *obt = &obd->u.obt;
79 init_rwsem(&obt->obt_rwsem);
80 obt->obt_qfmt = LUSTRE_QUOTA_V2;
81 sema_init(&obt->obt_quotachecking, 1);
82 rc = qctxt_init(obd, NULL);
84 CERROR("initialize quota context failed! (rc:%d)\n", rc);
89 static int filter_quota_cleanup(struct obd_device *obd)
92 qctxt_cleanup(&obd->u.obt.obt_qctxt, 0);
96 static int filter_quota_setinfo(struct obd_device *obd, void *data)
98 struct obd_export *exp = data;
99 struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
100 struct obd_import *imp = exp->exp_imp_reverse;
103 LASSERT(imp != NULL);
105 /* setup the quota context import */
106 spin_lock(&qctxt->lqc_lock);
107 if (qctxt->lqc_import != NULL) {
108 spin_unlock(&qctxt->lqc_lock);
109 if (qctxt->lqc_import == imp)
110 CDEBUG(D_WARNING, "%s: lqc_import(%p) of obd(%p) was "
111 "activated already.\n", obd->obd_name, imp, obd);
113 CDEBUG(D_ERROR, "%s: lqc_import(%p:%p) of obd(%p) was "
114 "activated by others.\n", obd->obd_name,
115 qctxt->lqc_import, imp, obd);
117 qctxt->lqc_import = imp;
118 /* make imp's connect flags equal relative exp's connect flags
119 * adding it to avoid the scan export list */
120 imp->imp_connect_data.ocd_connect_flags |=
121 (exp->exp_connect_flags &
122 (OBD_CONNECT_QUOTA64 | OBD_CONNECT_CHANGE_QS));
123 spin_unlock(&qctxt->lqc_lock);
124 CDEBUG(D_QUOTA, "%s: lqc_import(%p) of obd(%p) is reactivated "
125 "now.\n", obd->obd_name, imp, obd);
127 cfs_waitq_signal(&qctxt->lqc_wait_for_qmaster);
128 /* start quota slave recovery thread. (release high limits) */
129 qslave_start_recovery(obd, qctxt);
134 static int filter_quota_clearinfo(struct obd_export *exp, struct obd_device *obd)
136 struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
137 struct obd_import *imp = exp->exp_imp_reverse;
140 /* lquota may be not set up before destroying export, b=14896 */
141 if (!obd->obd_set_up)
144 if (unlikely(imp == NULL))
147 /* when exp->exp_imp_reverse is destroyed, the corresponding lqc_import
148 * should be invalid b=12374 */
149 spin_lock(&qctxt->lqc_lock);
150 if (qctxt->lqc_import == imp) {
151 qctxt->lqc_import = NULL;
152 spin_unlock(&qctxt->lqc_lock);
153 CDEBUG(D_QUOTA, "%s: lqc_import(%p) of obd(%p) is invalid now.\n",
154 obd->obd_name, imp, obd);
155 ptlrpc_cleanup_imp(imp);
156 dqacq_interrupt(qctxt);
158 spin_unlock(&qctxt->lqc_lock);
163 static int filter_quota_enforce(struct obd_device *obd, unsigned int ignore)
167 if (!sb_any_quota_enabled(obd->u.obt.obt_sb))
171 CDEBUG(D_QUOTA, "blocks will be written with ignoring quota.\n");
172 cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
174 cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
180 #define GET_OA_ID(flag, oa) (flag == USRQUOTA ? oa->o_uid : oa->o_gid)
181 static int filter_quota_getflag(struct obd_device *obd, struct obdo *oa)
183 struct obd_device_target *obt = &obd->u.obt;
184 struct lustre_quota_ctxt *qctxt = &obt->obt_qctxt;
185 int err, cnt, rc = 0;
186 struct obd_quotactl *oqctl;
189 if (!sb_any_quota_enabled(obt->obt_sb))
192 OBD_ALLOC_PTR(oqctl);
194 CERROR("Not enough memory!");
198 /* set over quota flags for a uid/gid */
199 oa->o_valid |= OBD_MD_FLUSRQUOTA | OBD_MD_FLGRPQUOTA;
200 oa->o_flags &= ~(OBD_FL_NO_USRQUOTA | OBD_FL_NO_GRPQUOTA);
202 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
203 struct lustre_qunit_size *lqs = NULL;
205 lqs = quota_search_lqs(LQS_KEY(cnt, GET_OA_ID(cnt, oa)),
207 if (lqs == NULL || IS_ERR(lqs)) {
211 spin_lock(&lqs->lqs_lock);
212 if (lqs->lqs_bunit_sz <= qctxt->lqc_sync_blk) {
213 oa->o_flags |= (cnt == USRQUOTA) ?
214 OBD_FL_NO_USRQUOTA : OBD_FL_NO_GRPQUOTA;
215 spin_unlock(&lqs->lqs_lock);
216 CDEBUG(D_QUOTA, "set sync flag: bunit(%lu), "
217 "sync_blk(%d)\n", lqs->lqs_bunit_sz,
218 qctxt->lqc_sync_blk);
219 /* this is for quota_search_lqs */
223 spin_unlock(&lqs->lqs_lock);
224 /* this is for quota_search_lqs */
228 memset(oqctl, 0, sizeof(*oqctl));
230 oqctl->qc_cmd = Q_GETQUOTA;
231 oqctl->qc_type = cnt;
232 oqctl->qc_id = (cnt == USRQUOTA) ? oa->o_uid : oa->o_gid;
233 err = fsfilt_quotactl(obd, obt->obt_sb, oqctl);
237 oa->o_valid &= ~((cnt == USRQUOTA) ? OBD_MD_FLUSRQUOTA :
242 if (oqctl->qc_dqblk.dqb_bhardlimit &&
243 (toqb(oqctl->qc_dqblk.dqb_curspace) >=
244 oqctl->qc_dqblk.dqb_bhardlimit))
245 oa->o_flags |= (cnt == USRQUOTA) ?
246 OBD_FL_NO_USRQUOTA : OBD_FL_NO_GRPQUOTA;
253 * check whether the left quota of certain uid and gid can satisfy a block_write
254 * or inode_create rpc. When need to acquire quota, return QUOTA_RET_ACQUOTA
256 static int quota_check_common(struct obd_device *obd, const unsigned int id[],
257 int pending[], int count, int cycle, int isblk,
258 struct inode *inode, int frags)
260 struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
262 struct qunit_data qdata[MAXQUOTAS];
264 int rc = 0, rc2[2] = { 0, 0 };
267 spin_lock(&qctxt->lqc_lock);
268 if (!qctxt->lqc_valid){
269 spin_unlock(&qctxt->lqc_lock);
272 spin_unlock(&qctxt->lqc_lock);
274 for (i = 0; i < MAXQUOTAS; i++) {
275 struct lustre_qunit_size *lqs = NULL;
277 qdata[i].qd_id = id[i];
278 qdata[i].qd_flags = i;
280 QDATA_SET_BLK(&qdata[i]);
281 qdata[i].qd_count = 0;
283 /* ignore root user */
284 if (qdata[i].qd_id == 0 && !QDATA_IS_GRP(&qdata[i]))
287 lqs = quota_search_lqs(LQS_KEY(i, id[i]), qctxt, 0);
288 if (lqs == NULL || IS_ERR(lqs))
292 CERROR("can not find lqs for check_common: "
293 "[id %u] [%c] [isblk %d] [count %d] [rc %ld]\n",
294 id[i], i % 2 ? 'g': 'u', isblk, count,
296 RETURN(PTR_ERR(lqs));
299 rc2[i] = compute_remquota(obd, qctxt, &qdata[i], isblk);
300 spin_lock(&lqs->lqs_lock);
303 pending[i] = count * CFS_PAGE_SIZE;
304 /* in order to complete this write, we need extra
305 * meta blocks. This function can get it through
306 * data needed to be written b=16542 */
309 rc = fsfilt_get_mblk(obd, qctxt->lqc_sb,
318 lqs->lqs_bwrite_pending += pending[i];
321 lqs->lqs_iwrite_pending += pending[i];
325 /* if xx_rec < 0, that means quota are releasing,
326 * and it may return before we use quota. So if
327 * we find this situation, we assuming it has
328 * returned b=18491 */
329 if (isblk && lqs->lqs_blk_rec < 0) {
330 if (qdata[i].qd_count < -lqs->lqs_blk_rec)
331 qdata[i].qd_count = 0;
333 qdata[i].qd_count += lqs->lqs_blk_rec;
335 if (!isblk && lqs->lqs_ino_rec < 0) {
336 if (qdata[i].qd_count < -lqs->lqs_ino_rec)
337 qdata[i].qd_count = 0;
339 qdata[i].qd_count += lqs->lqs_ino_rec;
342 CDEBUG(D_QUOTA, "[id %u] [%c] [isblk %d] [count %d]"
343 " [lqs pending: %lu] [qd_count: "LPU64"] [metablocks: %d]"
344 " [pending: %d]\n", id[i], i % 2 ? 'g': 'u', isblk, count,
345 isblk ? lqs->lqs_bwrite_pending : lqs->lqs_iwrite_pending,
346 qdata[i].qd_count, mb, pending[i]);
347 if (rc2[i] == QUOTA_RET_OK) {
348 if (isblk && qdata[i].qd_count < lqs->lqs_bwrite_pending)
349 rc2[i] = QUOTA_RET_ACQUOTA;
350 if (!isblk && qdata[i].qd_count <
351 lqs->lqs_iwrite_pending)
352 rc2[i] = QUOTA_RET_ACQUOTA;
355 spin_unlock(&lqs->lqs_lock);
357 if (lqs->lqs_blk_rec < 0 &&
359 lqs->lqs_bwrite_pending - lqs->lqs_blk_rec - mb)
360 OBD_FAIL_TIMEOUT(OBD_FAIL_QUOTA_DELAY_REL, 5);
362 /* When cycle is zero, lqs_*_pending will be changed. We will
363 * get reference of the lqs here and put reference of lqs in
364 * quota_pending_commit b=14784 */
368 /* this is for quota_search_lqs */
372 if (rc2[0] == QUOTA_RET_ACQUOTA || rc2[1] == QUOTA_RET_ACQUOTA)
373 RETURN(QUOTA_RET_ACQUOTA);
378 int quota_is_set(struct obd_device *obd, const unsigned int id[], int flag)
380 struct lustre_qunit_size *lqs;
383 if (!sb_any_quota_enabled(obd->u.obt.obt_qctxt.lqc_sb))
386 for (i = 0; i < MAXQUOTAS; i++) {
387 lqs = quota_search_lqs(LQS_KEY(i, id[i]),
388 &obd->u.obt.obt_qctxt, 0);
389 if (lqs && !IS_ERR(lqs)) {
390 if (lqs->lqs_flags & flag)
399 static int quota_chk_acq_common(struct obd_device *obd, const unsigned int id[],
400 int pending[], int count, quota_acquire acquire,
401 struct obd_trans_info *oti, int isblk,
402 struct inode *inode, int frags)
404 struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
405 struct timeval work_start;
406 struct timeval work_end;
408 struct l_wait_info lwi = { 0 };
409 int rc = 0, cycle = 0, count_err = 1;
412 if (!quota_is_set(obd, id, isblk ? QB_SET : QI_SET))
415 CDEBUG(D_QUOTA, "check quota for %s\n", obd->obd_name);
416 pending[USRQUOTA] = pending[GRPQUOTA] = 0;
417 /* Unfortunately, if quota master is too busy to handle the
418 * pre-dqacq in time and quota hash on ost is used up, we
419 * have to wait for the completion of in flight dqacq/dqrel,
420 * in order to get enough quota for write b=12588 */
421 do_gettimeofday(&work_start);
422 while ((rc = quota_check_common(obd, id, pending, count, cycle, isblk,
426 spin_lock(&qctxt->lqc_lock);
427 if (!qctxt->lqc_import && oti) {
428 spin_unlock(&qctxt->lqc_lock);
430 LASSERT(oti && oti->oti_thread &&
431 oti->oti_thread->t_watchdog);
433 lc_watchdog_disable(oti->oti_thread->t_watchdog);
434 CDEBUG(D_QUOTA, "sleep for quota master\n");
435 l_wait_event(qctxt->lqc_wait_for_qmaster, check_qm(qctxt),
437 CDEBUG(D_QUOTA, "wake up when quota master is back\n");
438 lc_watchdog_touch(oti->oti_thread->t_watchdog,
439 GET_TIMEOUT(oti->oti_thread->t_svc));
441 spin_unlock(&qctxt->lqc_lock);
446 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_HOLD_WRITE_RPC, 90);
447 /* after acquire(), we should run quota_check_common again
448 * so that we confirm there are enough quota to finish write */
449 rc = acquire(obd, id, oti, isblk);
451 /* please reference to dqacq_completion for the below */
452 /* a new request is finished, try again */
453 if (rc == QUOTA_REQ_RETURNED) {
454 CDEBUG(D_QUOTA, "finish a quota req, try again\n");
458 /* it is out of quota already */
460 CDEBUG(D_QUOTA, "out of quota, return -EDQUOT\n");
464 /* Related quota has been disabled by master, but enabled by
465 * slave, do not try again. */
466 if (unlikely(rc == -ESRCH)) {
467 CERROR("mismatched quota configuration, stop try.\n");
471 /* -EBUSY and others, wait a second and try again */
474 struct l_wait_info lwi;
476 if (oti && oti->oti_thread && oti->oti_thread->t_watchdog)
477 lc_watchdog_touch(oti->oti_thread->t_watchdog,
478 GET_TIMEOUT(oti->oti_thread->t_svc));
479 CDEBUG(D_QUOTA, "rc: %d, count_err: %d\n", rc,
482 init_waitqueue_head(&waitq);
483 lwi = LWI_TIMEOUT(cfs_time_seconds(min(cycle, 10)), NULL,
485 l_wait_event(waitq, 0, &lwi);
488 if (rc < 0 || cycle % 10 == 0) {
489 spin_lock(&last_print_lock);
490 if (last_print == 0 ||
491 cfs_time_before((last_print + cfs_time_seconds(30)),
492 cfs_time_current())) {
493 last_print = cfs_time_current();
494 spin_unlock(&last_print_lock);
495 CWARN("still haven't managed to acquire quota "
496 "space from the quota master after %d "
497 "retries (err=%d, rc=%d)\n",
498 cycle, count_err - 1, rc);
500 spin_unlock(&last_print_lock);
504 CDEBUG(D_QUOTA, "recheck quota with rc: %d, cycle: %d\n", rc,
507 do_gettimeofday(&work_end);
508 timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
509 lprocfs_counter_add(qctxt->lqc_stats,
510 isblk ? LQUOTA_WAIT_FOR_CHK_BLK :
511 LQUOTA_WAIT_FOR_CHK_INO,
518 * when a block_write or inode_create rpc is finished, adjust the record for
519 * pending blocks and inodes
521 static int quota_pending_commit(struct obd_device *obd, const unsigned int id[],
522 int pending[], int isblk)
524 struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
525 struct timeval work_start;
526 struct timeval work_end;
529 struct qunit_data qdata[MAXQUOTAS];
532 CDEBUG(D_QUOTA, "commit pending quota for %s\n", obd->obd_name);
533 CLASSERT(MAXQUOTAS < 4);
534 if (!sb_any_quota_enabled(qctxt->lqc_sb))
537 do_gettimeofday(&work_start);
538 for (i = 0; i < MAXQUOTAS; i++) {
539 struct lustre_qunit_size *lqs = NULL;
541 LASSERT(pending[i] >= 0);
545 qdata[i].qd_id = id[i];
546 qdata[i].qd_flags = i;
548 QDATA_SET_BLK(&qdata[i]);
549 qdata[i].qd_count = 0;
551 if (qdata[i].qd_id == 0 && !QDATA_IS_GRP(&qdata[i]))
554 lqs = quota_search_lqs(LQS_KEY(i, qdata[i].qd_id), qctxt, 0);
555 if (lqs == NULL || IS_ERR(lqs)) {
556 CERROR("can not find lqs for pending_commit: "
557 "[id %u] [%c] [pending %u] [isblk %d] (rc %ld), "
558 "maybe cause unexpected lqs refcount error!\n",
559 id[i], i ? 'g': 'u', pending[i], isblk,
560 lqs ? PTR_ERR(lqs) : -1);
564 spin_lock(&lqs->lqs_lock);
566 LASSERTF(lqs->lqs_bwrite_pending >= pending[i],
567 "there are too many blocks! [id %u] [%c] "
568 "[bwrite_pending %lu] [pending %u]\n",
569 id[i], i % 2 ? 'g' : 'u',
570 lqs->lqs_bwrite_pending, pending[i]);
572 lqs->lqs_bwrite_pending -= pending[i];
574 LASSERTF(lqs->lqs_iwrite_pending >= pending[i],
575 "there are too many files! [id %u] [%c] "
576 "[iwrite_pending %lu] [pending %u]\n",
577 id[i], i % 2 ? 'g' : 'u',
578 lqs->lqs_iwrite_pending, pending[i]);
580 lqs->lqs_iwrite_pending -= pending[i];
582 CDEBUG(D_QUOTA, "%s: lqs_pending=%lu pending[%d]=%d isblk=%d\n",
584 isblk ? lqs->lqs_bwrite_pending : lqs->lqs_iwrite_pending,
585 i, pending[i], isblk);
586 spin_unlock(&lqs->lqs_lock);
588 /* for quota_search_lqs in pending_commit */
590 /* for quota_search_lqs in quota_check */
593 do_gettimeofday(&work_end);
594 timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
595 lprocfs_counter_add(qctxt->lqc_stats,
596 isblk ? LQUOTA_WAIT_FOR_COMMIT_BLK :
597 LQUOTA_WAIT_FOR_COMMIT_INO,
603 static int mds_quota_init(void)
605 return lustre_dquot_init();
608 static int mds_quota_exit(void)
614 static int mds_quota_setup(struct obd_device *obd)
616 struct obd_device_target *obt = &obd->u.obt;
617 struct mds_obd *mds = &obd->u.mds;
621 if (unlikely(mds->mds_quota)) {
622 CWARN("try to reinitialize quota context!\n");
626 init_rwsem(&obt->obt_rwsem);
627 obt->obt_qfmt = LUSTRE_QUOTA_V2;
628 mds->mds_quota_info.qi_version = LUSTRE_QUOTA_V2;
629 sema_init(&obt->obt_quotachecking, 1);
630 /* initialize quota master and quota context */
631 sema_init(&mds->mds_qonoff_sem, 1);
632 rc = qctxt_init(obd, dqacq_handler);
634 CERROR("initialize quota context failed! (rc:%d)\n", rc);
641 static int mds_quota_cleanup(struct obd_device *obd)
644 if (unlikely(!obd->u.mds.mds_quota))
647 qctxt_cleanup(&obd->u.obt.obt_qctxt, 0);
651 static int mds_quota_setinfo(struct obd_device *obd, void *data)
653 struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
656 if (unlikely(!obd->u.mds.mds_quota))
660 QUOTA_MASTER_READY(qctxt);
662 QUOTA_MASTER_UNREADY(qctxt);
666 static int mds_quota_fs_cleanup(struct obd_device *obd)
668 struct mds_obd *mds = &obd->u.mds;
669 struct obd_quotactl oqctl;
672 if (unlikely(!mds->mds_quota))
676 memset(&oqctl, 0, sizeof(oqctl));
677 oqctl.qc_type = UGQUOTA;
679 down(&mds->mds_qonoff_sem);
680 mds_admin_quota_off(obd, &oqctl);
681 up(&mds->mds_qonoff_sem);
685 static int quota_acquire_common(struct obd_device *obd, const unsigned int id[],
686 struct obd_trans_info *oti, int isblk)
688 struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
692 rc = qctxt_adjust_qunit(obd, qctxt, id, isblk, 1, oti);
696 #endif /* HAVE_QUOTA_SUPPORT */
697 #endif /* __KERNEL__ */
699 struct osc_quota_info {
700 struct list_head oqi_hash; /* hash list */
701 struct client_obd *oqi_cli; /* osc obd */
702 unsigned int oqi_id; /* uid/gid of a file */
703 short oqi_type; /* quota type */
706 spinlock_t qinfo_list_lock = SPIN_LOCK_UNLOCKED;
708 static struct list_head qinfo_hash[NR_DQHASH];
709 /* SLAB cache for client quota context */
710 cfs_mem_cache_t *qinfo_cachep = NULL;
712 static inline int hashfn(struct client_obd *cli, unsigned long id, int type)
713 __attribute__((__const__));
715 static inline int hashfn(struct client_obd *cli, unsigned long id, int type)
717 unsigned long tmp = ((unsigned long)cli>>6) ^ id;
718 tmp = (tmp * (MAXQUOTAS - type)) % NR_DQHASH;
722 /* caller must hold qinfo_list_lock */
723 static inline void insert_qinfo_hash(struct osc_quota_info *oqi)
725 struct list_head *head = qinfo_hash +
726 hashfn(oqi->oqi_cli, oqi->oqi_id, oqi->oqi_type);
728 LASSERT_SPIN_LOCKED(&qinfo_list_lock);
729 list_add(&oqi->oqi_hash, head);
732 /* caller must hold qinfo_list_lock */
733 static inline void remove_qinfo_hash(struct osc_quota_info *oqi)
735 LASSERT_SPIN_LOCKED(&qinfo_list_lock);
736 list_del_init(&oqi->oqi_hash);
739 /* caller must hold qinfo_list_lock */
740 static inline struct osc_quota_info *find_qinfo(struct client_obd *cli,
741 unsigned int id, int type)
743 unsigned int hashent = hashfn(cli, id, type);
744 struct osc_quota_info *oqi;
747 LASSERT_SPIN_LOCKED(&qinfo_list_lock);
748 list_for_each_entry(oqi, &qinfo_hash[hashent], oqi_hash) {
749 if (oqi->oqi_cli == cli &&
750 oqi->oqi_id == id && oqi->oqi_type == type)
756 static struct osc_quota_info *alloc_qinfo(struct client_obd *cli,
757 unsigned int id, int type)
759 struct osc_quota_info *oqi;
762 OBD_SLAB_ALLOC(oqi, qinfo_cachep, CFS_ALLOC_STD, sizeof(*oqi));
766 CFS_INIT_LIST_HEAD(&oqi->oqi_hash);
769 oqi->oqi_type = type;
774 static void free_qinfo(struct osc_quota_info *oqi)
776 OBD_SLAB_FREE(oqi, qinfo_cachep, sizeof(*oqi));
779 int osc_quota_chkdq(struct client_obd *cli, const unsigned int qid[])
782 int cnt, rc = QUOTA_OK;
785 spin_lock(&qinfo_list_lock);
786 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
787 struct osc_quota_info *oqi = NULL;
789 id = (cnt == USRQUOTA) ? qid[USRQUOTA] : qid[GRPQUOTA];
790 oqi = find_qinfo(cli, id, cnt);
796 spin_unlock(&qinfo_list_lock);
801 int osc_quota_setdq(struct client_obd *cli, const unsigned int qid[],
802 obd_flag valid, obd_flag flags)
810 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
811 struct osc_quota_info *oqi, *old;
813 if (!(valid & ((cnt == USRQUOTA) ?
814 OBD_MD_FLUSRQUOTA : OBD_MD_FLGRPQUOTA)))
817 id = (cnt == USRQUOTA) ? qid[USRQUOTA] : qid[GRPQUOTA];
818 noquota = (cnt == USRQUOTA) ?
819 (flags & OBD_FL_NO_USRQUOTA) : (flags & OBD_FL_NO_GRPQUOTA);
821 oqi = alloc_qinfo(cli, id, cnt);
823 spin_lock(&qinfo_list_lock);
825 old = find_qinfo(cli, id, cnt);
827 remove_qinfo_hash(old);
828 else if (!old && noquota)
829 insert_qinfo_hash(oqi);
831 spin_unlock(&qinfo_list_lock);
838 CERROR("not enough mem!\n");
847 int osc_quota_cleanup(struct obd_device *obd)
849 struct client_obd *cli = &obd->u.cli;
850 struct osc_quota_info *oqi, *n;
854 spin_lock(&qinfo_list_lock);
855 for (i = 0; i < NR_DQHASH; i++) {
856 list_for_each_entry_safe(oqi, n, &qinfo_hash[i], oqi_hash) {
857 if (oqi->oqi_cli != cli)
859 remove_qinfo_hash(oqi);
863 spin_unlock(&qinfo_list_lock);
868 int osc_quota_init(void)
873 LASSERT(qinfo_cachep == NULL);
874 qinfo_cachep = cfs_mem_cache_create("osc_quota_info",
875 sizeof(struct osc_quota_info),
880 for (i = 0; i < NR_DQHASH; i++)
881 CFS_INIT_LIST_HEAD(qinfo_hash + i);
886 int osc_quota_exit(void)
888 struct osc_quota_info *oqi, *n;
892 spin_lock(&qinfo_list_lock);
893 for (i = 0; i < NR_DQHASH; i++) {
894 list_for_each_entry_safe(oqi, n, &qinfo_hash[i], oqi_hash) {
895 remove_qinfo_hash(oqi);
899 spin_unlock(&qinfo_list_lock);
901 rc = cfs_mem_cache_destroy(qinfo_cachep);
902 LASSERTF(rc == 0, "couldn't destory qinfo_cachep slab\n");
909 #ifdef HAVE_QUOTA_SUPPORT
910 quota_interface_t mds_quota_interface = {
911 .quota_init = mds_quota_init,
912 .quota_exit = mds_quota_exit,
913 .quota_setup = mds_quota_setup,
914 .quota_cleanup = mds_quota_cleanup,
915 .quota_check = target_quota_check,
916 .quota_ctl = mds_quota_ctl,
917 .quota_setinfo = mds_quota_setinfo,
918 .quota_fs_cleanup = mds_quota_fs_cleanup,
919 .quota_recovery = mds_quota_recovery,
920 .quota_adjust = mds_quota_adjust,
921 .quota_chkquota = quota_chk_acq_common,
922 .quota_acquire = quota_acquire_common,
923 .quota_pending_commit = quota_pending_commit,
926 quota_interface_t filter_quota_interface = {
927 .quota_setup = filter_quota_setup,
928 .quota_cleanup = filter_quota_cleanup,
929 .quota_check = target_quota_check,
930 .quota_ctl = filter_quota_ctl,
931 .quota_setinfo = filter_quota_setinfo,
932 .quota_clearinfo = filter_quota_clearinfo,
933 .quota_enforce = filter_quota_enforce,
934 .quota_getflag = filter_quota_getflag,
935 .quota_acquire = quota_acquire_common,
936 .quota_adjust = filter_quota_adjust,
937 .quota_chkquota = quota_chk_acq_common,
938 .quota_adjust_qunit = filter_quota_adjust_qunit,
939 .quota_pending_commit = quota_pending_commit,
942 #endif /* __KERNEL__ */
944 quota_interface_t mdc_quota_interface = {
945 .quota_ctl = client_quota_ctl,
946 .quota_check = client_quota_check,
947 .quota_poll_check = client_quota_poll_check,
950 quota_interface_t lmv_quota_interface = {
951 .quota_ctl = lmv_quota_ctl,
952 .quota_check = lmv_quota_check,
955 quota_interface_t osc_quota_interface = {
956 .quota_ctl = client_quota_ctl,
957 .quota_check = client_quota_check,
958 .quota_poll_check = client_quota_poll_check,
959 .quota_init = osc_quota_init,
960 .quota_exit = osc_quota_exit,
961 .quota_chkdq = osc_quota_chkdq,
962 .quota_setdq = osc_quota_setdq,
963 .quota_cleanup = osc_quota_cleanup,
964 .quota_adjust_qunit = client_quota_adjust_qunit,
967 quota_interface_t lov_quota_interface = {
968 .quota_ctl = lov_quota_ctl,
969 .quota_check = lov_quota_check,
970 .quota_adjust_qunit = lov_quota_adjust_qunit,
975 cfs_proc_dir_entry_t *lquota_type_proc_dir = NULL;
977 static int __init init_lustre_quota(void)
979 #ifdef HAVE_QUOTA_SUPPORT
982 lquota_type_proc_dir = lprocfs_register(OBD_LQUOTA_DEVICENAME,
985 if (IS_ERR(lquota_type_proc_dir)) {
986 CERROR("LProcFS failed in lquota-init\n");
987 rc = PTR_ERR(lquota_type_proc_dir);
991 rc = qunit_cache_init();
995 PORTAL_SYMBOL_REGISTER(filter_quota_interface);
996 PORTAL_SYMBOL_REGISTER(mds_quota_interface);
998 PORTAL_SYMBOL_REGISTER(mdc_quota_interface);
999 PORTAL_SYMBOL_REGISTER(lmv_quota_interface);
1000 PORTAL_SYMBOL_REGISTER(osc_quota_interface);
1001 PORTAL_SYMBOL_REGISTER(lov_quota_interface);
1005 static void /*__exit*/ exit_lustre_quota(void)
1007 PORTAL_SYMBOL_UNREGISTER(mdc_quota_interface);
1008 PORTAL_SYMBOL_UNREGISTER(lmv_quota_interface);
1009 PORTAL_SYMBOL_UNREGISTER(osc_quota_interface);
1010 PORTAL_SYMBOL_UNREGISTER(lov_quota_interface);
1011 #ifdef HAVE_QUOTA_SUPPORT
1012 PORTAL_SYMBOL_UNREGISTER(filter_quota_interface);
1013 PORTAL_SYMBOL_UNREGISTER(mds_quota_interface);
1015 qunit_cache_cleanup();
1017 if (lquota_type_proc_dir)
1018 lprocfs_remove(&lquota_type_proc_dir);
1022 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
1023 MODULE_DESCRIPTION("Lustre Quota");
1024 MODULE_LICENSE("GPL");
1026 cfs_module(lquota, "1.0.0", init_lustre_quota, exit_lustre_quota);
1028 #ifdef HAVE_QUOTA_SUPPORT
1029 EXPORT_SYMBOL(mds_quota_interface);
1030 EXPORT_SYMBOL(filter_quota_interface);
1032 EXPORT_SYMBOL(mdc_quota_interface);
1033 EXPORT_SYMBOL(lmv_quota_interface);
1034 EXPORT_SYMBOL(osc_quota_interface);
1035 EXPORT_SYMBOL(lov_quota_interface);
1036 #endif /* __KERNEL */