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 atomic_set(&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 static int filter_quota_getflag(struct obd_device *obd, struct obdo *oa)
182 struct obd_device_target *obt = &obd->u.obt;
183 struct lustre_quota_ctxt *qctxt = &obt->obt_qctxt;
184 int err, cnt, rc = 0;
185 struct obd_quotactl *oqctl;
188 if (!sb_any_quota_enabled(obt->obt_sb))
191 OBD_ALLOC_PTR(oqctl);
193 CERROR("Not enough memory!");
197 /* set over quota flags for a uid/gid */
198 oa->o_valid |= OBD_MD_FLUSRQUOTA | OBD_MD_FLGRPQUOTA;
199 oa->o_flags &= ~(OBD_FL_NO_USRQUOTA | OBD_FL_NO_GRPQUOTA);
201 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
202 struct quota_adjust_qunit oqaq_tmp;
203 struct lustre_qunit_size *lqs = NULL;
205 oqaq_tmp.qaq_flags = cnt;
206 oqaq_tmp.qaq_id = (cnt == USRQUOTA) ? oa->o_uid : oa->o_gid;
208 quota_search_lqs(NULL, &oqaq_tmp, qctxt, &lqs);
210 spin_lock(&lqs->lqs_lock);
211 if (lqs->lqs_bunit_sz <= qctxt->lqc_sync_blk) {
212 oa->o_flags |= (cnt == USRQUOTA) ?
213 OBD_FL_NO_USRQUOTA : OBD_FL_NO_GRPQUOTA;
214 spin_unlock(&lqs->lqs_lock);
215 CDEBUG(D_QUOTA, "set sync flag: bunit(%lu), "
216 "sync_blk(%d)\n", lqs->lqs_bunit_sz,
217 qctxt->lqc_sync_blk);
218 /* this is for quota_search_lqs */
222 spin_unlock(&lqs->lqs_lock);
223 /* this is for quota_search_lqs */
227 memset(oqctl, 0, sizeof(*oqctl));
229 oqctl->qc_cmd = Q_GETQUOTA;
230 oqctl->qc_type = cnt;
231 oqctl->qc_id = (cnt == USRQUOTA) ? oa->o_uid : oa->o_gid;
232 err = fsfilt_quotactl(obd, obt->obt_sb, oqctl);
236 oa->o_valid &= ~((cnt == USRQUOTA) ? OBD_MD_FLUSRQUOTA :
241 if (oqctl->qc_dqblk.dqb_bhardlimit &&
242 (toqb(oqctl->qc_dqblk.dqb_curspace) >=
243 oqctl->qc_dqblk.dqb_bhardlimit))
244 oa->o_flags |= (cnt == USRQUOTA) ?
245 OBD_FL_NO_USRQUOTA : OBD_FL_NO_GRPQUOTA;
252 * check whether the left quota of certain uid and gid can satisfy a block_write
253 * or inode_create rpc. When need to acquire quota, return QUOTA_RET_ACQUOTA
255 static int quota_check_common(struct obd_device *obd, const unsigned int id[],
256 int pending[], int count, int cycle, int isblk,
257 struct inode *inode, int frags)
259 struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
261 struct qunit_data qdata[MAXQUOTAS];
263 int rc = 0, rc2[2] = { 0, 0 };
266 CLASSERT(MAXQUOTAS < 4);
267 if (!sb_any_quota_enabled(qctxt->lqc_sb))
270 spin_lock(&qctxt->lqc_lock);
271 if (!qctxt->lqc_valid){
272 spin_unlock(&qctxt->lqc_lock);
275 spin_unlock(&qctxt->lqc_lock);
277 for (i = 0; i < MAXQUOTAS; i++) {
278 struct lustre_qunit_size *lqs = NULL;
280 qdata[i].qd_id = id[i];
281 qdata[i].qd_flags = i;
283 QDATA_SET_BLK(&qdata[i]);
284 qdata[i].qd_count = 0;
286 /* ignore root user */
287 if (qdata[i].qd_id == 0 && !QDATA_IS_GRP(&qdata[i]))
290 quota_search_lqs(&qdata[i], NULL, qctxt, &lqs);
295 CERROR("can not find lqs for check_common: "
296 "[id %u] [%c] [isblk %d] [count %d] [rc %ld]\n",
297 id[i], i % 2 ? 'g': 'u', isblk, count,
299 RETURN(PTR_ERR(lqs));
302 rc2[i] = compute_remquota(obd, qctxt, &qdata[i], isblk);
303 spin_lock(&lqs->lqs_lock);
306 pending[i] = count * CFS_PAGE_SIZE;
307 /* in order to complete this write, we need extra
308 * meta blocks. This function can get it through
309 * data needed to be written b=16542 */
312 rc = fsfilt_get_mblk(obd, qctxt->lqc_sb,
321 lqs->lqs_bwrite_pending += pending[i];
324 lqs->lqs_iwrite_pending += pending[i];
328 /* if xx_rec < 0, that means quota are releasing,
329 * and it may return before we use quota. So if
330 * we find this situation, we assuming it has
331 * returned b=18491 */
332 if (isblk && lqs->lqs_blk_rec < 0) {
333 if (qdata[i].qd_count < -lqs->lqs_blk_rec)
334 qdata[i].qd_count = 0;
336 qdata[i].qd_count += lqs->lqs_blk_rec;
338 if (!isblk && lqs->lqs_ino_rec < 0) {
339 if (qdata[i].qd_count < -lqs->lqs_ino_rec)
340 qdata[i].qd_count = 0;
342 qdata[i].qd_count += lqs->lqs_ino_rec;
345 CDEBUG(D_QUOTA, "[id %u] [%c] [isblk %d] [count %d]"
346 " [lqs pending: %lu] [qd_count: "LPU64"] [metablocks: %d]"
347 " [pending: %d]\n", id[i], i % 2 ? 'g': 'u', isblk, count,
348 isblk ? lqs->lqs_bwrite_pending : lqs->lqs_iwrite_pending,
349 qdata[i].qd_count, mb, pending[i]);
350 if (rc2[i] == QUOTA_RET_OK) {
351 if (isblk && qdata[i].qd_count < lqs->lqs_bwrite_pending)
352 rc2[i] = QUOTA_RET_ACQUOTA;
353 if (!isblk && qdata[i].qd_count <
354 lqs->lqs_iwrite_pending)
355 rc2[i] = QUOTA_RET_ACQUOTA;
358 spin_unlock(&lqs->lqs_lock);
360 if (lqs->lqs_blk_rec < 0 &&
362 lqs->lqs_bwrite_pending - lqs->lqs_blk_rec - mb)
363 OBD_FAIL_TIMEOUT(OBD_FAIL_QUOTA_DELAY_REL, 5);
365 /* When cycle is zero, lqs_*_pending will be changed. We will
366 * get reference of the lqs here and put reference of lqs in
367 * quota_pending_commit b=14784 */
371 /* this is for quota_search_lqs */
375 if (rc2[0] == QUOTA_RET_ACQUOTA || rc2[1] == QUOTA_RET_ACQUOTA)
376 RETURN(QUOTA_RET_ACQUOTA);
381 static int quota_chk_acq_common(struct obd_device *obd, const unsigned int id[],
382 int pending[], int count, quota_acquire acquire,
383 struct obd_trans_info *oti, int isblk,
384 struct inode *inode, int frags)
386 struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
387 struct timeval work_start;
388 struct timeval work_end;
390 struct l_wait_info lwi = { 0 };
391 int rc = 0, cycle = 0, count_err = 1;
394 CDEBUG(D_QUOTA, "check quota for %s\n", obd->obd_name);
395 pending[USRQUOTA] = pending[GRPQUOTA] = 0;
396 /* Unfortunately, if quota master is too busy to handle the
397 * pre-dqacq in time and quota hash on ost is used up, we
398 * have to wait for the completion of in flight dqacq/dqrel,
399 * in order to get enough quota for write b=12588 */
400 do_gettimeofday(&work_start);
401 while ((rc = quota_check_common(obd, id, pending, count, cycle, isblk,
405 spin_lock(&qctxt->lqc_lock);
406 if (!qctxt->lqc_import && oti) {
407 spin_unlock(&qctxt->lqc_lock);
409 LASSERT(oti && oti->oti_thread &&
410 oti->oti_thread->t_watchdog);
412 lc_watchdog_disable(oti->oti_thread->t_watchdog);
413 CDEBUG(D_QUOTA, "sleep for quota master\n");
414 l_wait_event(qctxt->lqc_wait_for_qmaster, check_qm(qctxt),
416 CDEBUG(D_QUOTA, "wake up when quota master is back\n");
417 lc_watchdog_touch(oti->oti_thread->t_watchdog,
418 GET_TIMEOUT(oti->oti_thread->t_svc));
420 spin_unlock(&qctxt->lqc_lock);
425 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_HOLD_WRITE_RPC, 90);
426 /* after acquire(), we should run quota_check_common again
427 * so that we confirm there are enough quota to finish write */
428 rc = acquire(obd, id, oti, isblk);
430 /* please reference to dqacq_completion for the below */
431 /* a new request is finished, try again */
432 if (rc == QUOTA_REQ_RETURNED) {
433 CDEBUG(D_QUOTA, "finish a quota req, try again\n");
437 /* it is out of quota already */
439 CDEBUG(D_QUOTA, "out of quota, return -EDQUOT\n");
443 /* -EBUSY and others, wait a second and try again */
446 struct l_wait_info lwi;
448 if (oti && oti->oti_thread && oti->oti_thread->t_watchdog)
449 lc_watchdog_touch(oti->oti_thread->t_watchdog,
450 GET_TIMEOUT(oti->oti_thread->t_svc));
451 CDEBUG(D_QUOTA, "rc: %d, count_err: %d\n", rc,
454 init_waitqueue_head(&waitq);
455 lwi = LWI_TIMEOUT(cfs_time_seconds(min(cycle, 10)), NULL,
457 l_wait_event(waitq, 0, &lwi);
460 if (rc < 0 || cycle % 10 == 2) {
461 spin_lock(&last_print_lock);
462 if (last_print == 0 ||
463 cfs_time_before((last_print + cfs_time_seconds(30)),
464 cfs_time_current())) {
465 last_print = cfs_time_current();
466 spin_unlock(&last_print_lock);
467 CWARN("still haven't managed to acquire quota "
468 "space from the quota master after %d "
469 "retries (err=%d, rc=%d)\n",
470 cycle, count_err - 1, rc);
472 spin_unlock(&last_print_lock);
476 CDEBUG(D_QUOTA, "recheck quota with rc: %d, cycle: %d\n", rc,
479 do_gettimeofday(&work_end);
480 timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
481 lprocfs_counter_add(qctxt->lqc_stats,
482 isblk ? LQUOTA_WAIT_FOR_CHK_BLK :
483 LQUOTA_WAIT_FOR_CHK_INO,
490 * when a block_write or inode_create rpc is finished, adjust the record for
491 * pending blocks and inodes
493 static int quota_pending_commit(struct obd_device *obd, const unsigned int id[],
494 int pending[], int isblk)
496 struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
497 struct timeval work_start;
498 struct timeval work_end;
501 struct qunit_data qdata[MAXQUOTAS];
504 CDEBUG(D_QUOTA, "commit pending quota for %s\n", obd->obd_name);
505 CLASSERT(MAXQUOTAS < 4);
506 if (!sb_any_quota_enabled(qctxt->lqc_sb))
509 do_gettimeofday(&work_start);
510 for (i = 0; i < MAXQUOTAS; i++) {
511 struct lustre_qunit_size *lqs = NULL;
513 LASSERT(pending[i] >= 0);
517 qdata[i].qd_id = id[i];
518 qdata[i].qd_flags = i;
520 QDATA_SET_BLK(&qdata[i]);
521 qdata[i].qd_count = 0;
523 if (qdata[i].qd_id == 0 && !QDATA_IS_GRP(&qdata[i]))
526 quota_search_lqs(&qdata[i], NULL, qctxt, &lqs);
527 if (lqs == NULL || IS_ERR(lqs)) {
528 CERROR("can not find lqs for pending_commit: "
529 "[id %u] [%c] [pending %u] [isblk %d] (rc %ld), "
530 "maybe cause unexpected lqs refcount error!\n",
531 id[i], i % 2 ? 'g': 'u', pending[i], isblk,
532 lqs ? PTR_ERR(lqs) : -1);
536 spin_lock(&lqs->lqs_lock);
538 LASSERTF(lqs->lqs_bwrite_pending >= pending[i],
539 "there are too many blocks! [id %u] [%c] "
540 "[bwrite_pending %lu] [pending %u]\n",
541 id[i], i % 2 ? 'g' : 'u',
542 lqs->lqs_bwrite_pending, pending[i]);
544 lqs->lqs_bwrite_pending -= pending[i];
546 LASSERTF(lqs->lqs_iwrite_pending >= pending[i],
547 "there are too many files! [id %u] [%c] "
548 "[iwrite_pending %lu] [pending %u]\n",
549 id[i], i % 2 ? 'g' : 'u',
550 lqs->lqs_iwrite_pending, pending[i]);
552 lqs->lqs_iwrite_pending -= pending[i];
554 CDEBUG(D_QUOTA, "id: %u, %c, lqs pending: %lu, pending: %d, "
555 "isblk: %d.\n", id[i], i % 2 ? 'g' : 'u',
556 isblk ? lqs->lqs_bwrite_pending: lqs->lqs_iwrite_pending,
558 spin_unlock(&lqs->lqs_lock);
560 /* for quota_search_lqs in pending_commit */
562 /* for quota_search_lqs in quota_check */
565 do_gettimeofday(&work_end);
566 timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
567 lprocfs_counter_add(qctxt->lqc_stats,
568 isblk ? LQUOTA_WAIT_FOR_COMMIT_BLK :
569 LQUOTA_WAIT_FOR_COMMIT_INO,
575 static int mds_quota_init(void)
577 return lustre_dquot_init();
580 static int mds_quota_exit(void)
586 static int mds_quota_setup(struct obd_device *obd)
588 struct obd_device_target *obt = &obd->u.obt;
589 struct mds_obd *mds = &obd->u.mds;
593 if (unlikely(mds->mds_quota)) {
594 CWARN("try to reinitialize quota context!\n");
598 init_rwsem(&obt->obt_rwsem);
599 obt->obt_qfmt = LUSTRE_QUOTA_V2;
600 mds->mds_quota_info.qi_version = LUSTRE_QUOTA_V2;
601 atomic_set(&obt->obt_quotachecking, 1);
602 /* initialize quota master and quota context */
603 sema_init(&mds->mds_qonoff_sem, 1);
604 rc = qctxt_init(obd, dqacq_handler);
606 CERROR("initialize quota context failed! (rc:%d)\n", rc);
613 static int mds_quota_cleanup(struct obd_device *obd)
616 if (unlikely(!obd->u.mds.mds_quota))
619 qctxt_cleanup(&obd->u.obt.obt_qctxt, 0);
623 static int mds_quota_setinfo(struct obd_device *obd, void *data)
625 struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
628 if (unlikely(!obd->u.mds.mds_quota))
632 QUOTA_MASTER_READY(qctxt);
634 QUOTA_MASTER_UNREADY(qctxt);
638 static int mds_quota_fs_cleanup(struct obd_device *obd)
640 struct mds_obd *mds = &obd->u.mds;
641 struct obd_quotactl oqctl;
644 if (unlikely(!mds->mds_quota))
648 memset(&oqctl, 0, sizeof(oqctl));
649 oqctl.qc_type = UGQUOTA;
651 down(&mds->mds_qonoff_sem);
652 mds_admin_quota_off(obd, &oqctl);
653 up(&mds->mds_qonoff_sem);
657 static int quota_acquire_common(struct obd_device *obd, const unsigned int id[],
658 struct obd_trans_info *oti, int isblk)
660 struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
664 rc = qctxt_adjust_qunit(obd, qctxt, id, isblk, 1, oti);
668 #endif /* HAVE_QUOTA_SUPPORT */
669 #endif /* __KERNEL__ */
671 struct osc_quota_info {
672 struct list_head oqi_hash; /* hash list */
673 struct client_obd *oqi_cli; /* osc obd */
674 unsigned int oqi_id; /* uid/gid of a file */
675 short oqi_type; /* quota type */
678 spinlock_t qinfo_list_lock = SPIN_LOCK_UNLOCKED;
680 static struct list_head qinfo_hash[NR_DQHASH];
681 /* SLAB cache for client quota context */
682 cfs_mem_cache_t *qinfo_cachep = NULL;
684 static inline int hashfn(struct client_obd *cli, unsigned long id, int type)
685 __attribute__((__const__));
687 static inline int hashfn(struct client_obd *cli, unsigned long id, int type)
689 unsigned long tmp = ((unsigned long)cli>>6) ^ id;
690 tmp = (tmp * (MAXQUOTAS - type)) % NR_DQHASH;
694 /* caller must hold qinfo_list_lock */
695 static inline void insert_qinfo_hash(struct osc_quota_info *oqi)
697 struct list_head *head = qinfo_hash +
698 hashfn(oqi->oqi_cli, oqi->oqi_id, oqi->oqi_type);
700 LASSERT_SPIN_LOCKED(&qinfo_list_lock);
701 list_add(&oqi->oqi_hash, head);
704 /* caller must hold qinfo_list_lock */
705 static inline void remove_qinfo_hash(struct osc_quota_info *oqi)
707 LASSERT_SPIN_LOCKED(&qinfo_list_lock);
708 list_del_init(&oqi->oqi_hash);
711 /* caller must hold qinfo_list_lock */
712 static inline struct osc_quota_info *find_qinfo(struct client_obd *cli,
713 unsigned int id, int type)
715 unsigned int hashent = hashfn(cli, id, type);
716 struct osc_quota_info *oqi;
719 LASSERT_SPIN_LOCKED(&qinfo_list_lock);
720 list_for_each_entry(oqi, &qinfo_hash[hashent], oqi_hash) {
721 if (oqi->oqi_cli == cli &&
722 oqi->oqi_id == id && oqi->oqi_type == type)
728 static struct osc_quota_info *alloc_qinfo(struct client_obd *cli,
729 unsigned int id, int type)
731 struct osc_quota_info *oqi;
734 OBD_SLAB_ALLOC(oqi, qinfo_cachep, CFS_ALLOC_STD, sizeof(*oqi));
738 CFS_INIT_LIST_HEAD(&oqi->oqi_hash);
741 oqi->oqi_type = type;
746 static void free_qinfo(struct osc_quota_info *oqi)
748 OBD_SLAB_FREE(oqi, qinfo_cachep, sizeof(*oqi));
751 int osc_quota_chkdq(struct client_obd *cli, const unsigned int qid[])
754 int cnt, rc = QUOTA_OK;
757 spin_lock(&qinfo_list_lock);
758 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
759 struct osc_quota_info *oqi = NULL;
761 id = (cnt == USRQUOTA) ? qid[USRQUOTA] : qid[GRPQUOTA];
762 oqi = find_qinfo(cli, id, cnt);
768 spin_unlock(&qinfo_list_lock);
773 int osc_quota_setdq(struct client_obd *cli, const unsigned int qid[],
774 obd_flag valid, obd_flag flags)
782 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
783 struct osc_quota_info *oqi, *old;
785 if (!(valid & ((cnt == USRQUOTA) ?
786 OBD_MD_FLUSRQUOTA : OBD_MD_FLGRPQUOTA)))
789 id = (cnt == USRQUOTA) ? qid[USRQUOTA] : qid[GRPQUOTA];
790 noquota = (cnt == USRQUOTA) ?
791 (flags & OBD_FL_NO_USRQUOTA) : (flags & OBD_FL_NO_GRPQUOTA);
793 oqi = alloc_qinfo(cli, id, cnt);
795 spin_lock(&qinfo_list_lock);
797 old = find_qinfo(cli, id, cnt);
799 remove_qinfo_hash(old);
800 else if (!old && noquota)
801 insert_qinfo_hash(oqi);
803 spin_unlock(&qinfo_list_lock);
810 CERROR("not enough mem!\n");
819 int osc_quota_cleanup(struct obd_device *obd)
821 struct client_obd *cli = &obd->u.cli;
822 struct osc_quota_info *oqi, *n;
826 spin_lock(&qinfo_list_lock);
827 for (i = 0; i < NR_DQHASH; i++) {
828 list_for_each_entry_safe(oqi, n, &qinfo_hash[i], oqi_hash) {
829 if (oqi->oqi_cli != cli)
831 remove_qinfo_hash(oqi);
835 spin_unlock(&qinfo_list_lock);
840 int osc_quota_init(void)
845 LASSERT(qinfo_cachep == NULL);
846 qinfo_cachep = cfs_mem_cache_create("osc_quota_info",
847 sizeof(struct osc_quota_info),
852 for (i = 0; i < NR_DQHASH; i++)
853 CFS_INIT_LIST_HEAD(qinfo_hash + i);
858 int osc_quota_exit(void)
860 struct osc_quota_info *oqi, *n;
864 spin_lock(&qinfo_list_lock);
865 for (i = 0; i < NR_DQHASH; i++) {
866 list_for_each_entry_safe(oqi, n, &qinfo_hash[i], oqi_hash) {
867 remove_qinfo_hash(oqi);
871 spin_unlock(&qinfo_list_lock);
873 rc = cfs_mem_cache_destroy(qinfo_cachep);
874 LASSERTF(rc == 0, "couldn't destory qinfo_cachep slab\n");
881 #ifdef HAVE_QUOTA_SUPPORT
882 quota_interface_t mds_quota_interface = {
883 .quota_init = mds_quota_init,
884 .quota_exit = mds_quota_exit,
885 .quota_setup = mds_quota_setup,
886 .quota_cleanup = mds_quota_cleanup,
887 .quota_check = target_quota_check,
888 .quota_ctl = mds_quota_ctl,
889 .quota_setinfo = mds_quota_setinfo,
890 .quota_fs_cleanup = mds_quota_fs_cleanup,
891 .quota_recovery = mds_quota_recovery,
892 .quota_adjust = mds_quota_adjust,
893 .quota_chkquota = quota_chk_acq_common,
894 .quota_acquire = quota_acquire_common,
895 .quota_pending_commit = quota_pending_commit,
898 quota_interface_t filter_quota_interface = {
899 .quota_setup = filter_quota_setup,
900 .quota_cleanup = filter_quota_cleanup,
901 .quota_check = target_quota_check,
902 .quota_ctl = filter_quota_ctl,
903 .quota_setinfo = filter_quota_setinfo,
904 .quota_clearinfo = filter_quota_clearinfo,
905 .quota_enforce = filter_quota_enforce,
906 .quota_getflag = filter_quota_getflag,
907 .quota_acquire = quota_acquire_common,
908 .quota_adjust = filter_quota_adjust,
909 .quota_chkquota = quota_chk_acq_common,
910 .quota_adjust_qunit = filter_quota_adjust_qunit,
911 .quota_pending_commit = quota_pending_commit,
914 #endif /* __KERNEL__ */
916 quota_interface_t mdc_quota_interface = {
917 .quota_ctl = client_quota_ctl,
918 .quota_check = client_quota_check,
919 .quota_poll_check = client_quota_poll_check,
922 quota_interface_t lmv_quota_interface = {
923 .quota_ctl = lmv_quota_ctl,
924 .quota_check = lmv_quota_check,
927 quota_interface_t osc_quota_interface = {
928 .quota_ctl = client_quota_ctl,
929 .quota_check = client_quota_check,
930 .quota_poll_check = client_quota_poll_check,
931 .quota_init = osc_quota_init,
932 .quota_exit = osc_quota_exit,
933 .quota_chkdq = osc_quota_chkdq,
934 .quota_setdq = osc_quota_setdq,
935 .quota_cleanup = osc_quota_cleanup,
936 .quota_adjust_qunit = client_quota_adjust_qunit,
939 quota_interface_t lov_quota_interface = {
940 .quota_ctl = lov_quota_ctl,
941 .quota_check = lov_quota_check,
942 .quota_adjust_qunit = lov_quota_adjust_qunit,
947 cfs_proc_dir_entry_t *lquota_type_proc_dir = NULL;
949 static int __init init_lustre_quota(void)
951 #ifdef HAVE_QUOTA_SUPPORT
954 lquota_type_proc_dir = lprocfs_register(OBD_LQUOTA_DEVICENAME,
957 if (IS_ERR(lquota_type_proc_dir)) {
958 CERROR("LProcFS failed in lquota-init\n");
959 rc = PTR_ERR(lquota_type_proc_dir);
963 rc = qunit_cache_init();
967 PORTAL_SYMBOL_REGISTER(filter_quota_interface);
968 PORTAL_SYMBOL_REGISTER(mds_quota_interface);
970 PORTAL_SYMBOL_REGISTER(mdc_quota_interface);
971 PORTAL_SYMBOL_REGISTER(lmv_quota_interface);
972 PORTAL_SYMBOL_REGISTER(osc_quota_interface);
973 PORTAL_SYMBOL_REGISTER(lov_quota_interface);
977 static void /*__exit*/ exit_lustre_quota(void)
979 PORTAL_SYMBOL_UNREGISTER(mdc_quota_interface);
980 PORTAL_SYMBOL_UNREGISTER(lmv_quota_interface);
981 PORTAL_SYMBOL_UNREGISTER(osc_quota_interface);
982 PORTAL_SYMBOL_UNREGISTER(lov_quota_interface);
983 #ifdef HAVE_QUOTA_SUPPORT
984 PORTAL_SYMBOL_UNREGISTER(filter_quota_interface);
985 PORTAL_SYMBOL_UNREGISTER(mds_quota_interface);
987 qunit_cache_cleanup();
989 if (lquota_type_proc_dir)
990 lprocfs_remove(&lquota_type_proc_dir);
994 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
995 MODULE_DESCRIPTION("Lustre Quota");
996 MODULE_LICENSE("GPL");
998 cfs_module(lquota, "1.0.0", init_lustre_quota, exit_lustre_quota);
1000 #ifdef HAVE_QUOTA_SUPPORT
1001 EXPORT_SYMBOL(mds_quota_interface);
1002 EXPORT_SYMBOL(filter_quota_interface);
1004 EXPORT_SYMBOL(mdc_quota_interface);
1005 EXPORT_SYMBOL(lmv_quota_interface);
1006 EXPORT_SYMBOL(osc_quota_interface);
1007 EXPORT_SYMBOL(lov_quota_interface);
1008 #endif /* __KERNEL */