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.
36 * lustre/quota/quota_context.c
38 * Lustre Quota Context
40 * Author: Niu YaWei <niu@clusterfs.com>
44 # define EXPORT_SYMTAB
47 #define DEBUG_SUBSYSTEM S_LQUOTA
49 #include <linux/version.h>
51 #include <asm/unistd.h>
52 #include <linux/slab.h>
53 #include <linux/quotaops.h>
54 #include <linux/module.h>
55 #include <linux/init.h>
57 #include <obd_class.h>
58 #include <lustre_quota.h>
59 #include <lustre_fsfilt.h>
60 #include <lprocfs_status.h>
61 #include "quota_internal.h"
63 #ifdef HAVE_QUOTA_SUPPORT
65 static cfs_hash_ops_t lqs_hash_ops;
67 unsigned long default_bunit_sz = 128 * 1024 * 1024; /* 128M bytes */
68 unsigned long default_btune_ratio = 50; /* 50 percentage */
69 unsigned long default_iunit_sz = 5120; /* 5120 inodes */
70 unsigned long default_itune_ratio = 50; /* 50 percentage */
72 cfs_mem_cache_t *qunit_cachep = NULL;
73 struct list_head qunit_hash[NR_DQHASH];
74 spinlock_t qunit_hash_lock = SPIN_LOCK_UNLOCKED;
76 /* please sync qunit_state with qunit_state_names */
83 * a qunit is added into qunit hash, that means
84 * a quota req will be sent or is flying
88 * a qunit is removed from qunit hash, that
89 * means a quota req is handled and comes back
91 QUNIT_RM_FROM_HASH = 2,
93 * qunit can wake up all threads waiting for it
98 static const char *qunit_state_names[] = {
99 [QUNIT_CREATED] = "CREATED",
100 [QUNIT_IN_HASH] = "IN_HASH",
101 [QUNIT_RM_FROM_HASH] = "RM_FROM_HASH",
102 [QUNIT_FINISHED] = "FINISHED",
105 struct lustre_qunit {
106 struct list_head lq_hash; /** Hash list in memory */
107 atomic_t lq_refcnt; /** Use count */
108 struct lustre_quota_ctxt *lq_ctxt; /** Quota context this applies to */
109 struct qunit_data lq_data; /** See qunit_data */
110 unsigned int lq_opc; /** QUOTA_DQACQ, QUOTA_DQREL */
111 cfs_waitq_t lq_waitq; /** Threads waiting for this qunit */
112 spinlock_t lq_lock; /** Protect the whole structure */
113 enum qunit_state lq_state; /** Present the status of qunit */
114 int lq_rc; /** The rc of lq_data */
118 #define QUNIT_SET_STATE(qunit, state) \
120 spin_lock(&qunit->lq_lock); \
121 QDATA_DEBUG((&qunit->lq_data), "qunit(%p) lq_state(%s->%s), " \
122 "lq_rc(%d), lq_owner(%d)\n", \
123 qunit, qunit_state_names[qunit->lq_state], \
124 qunit_state_names[state], qunit->lq_rc, \
126 qunit->lq_state = state; \
127 spin_unlock(&qunit->lq_lock); \
130 #define QUNIT_SET_STATE_AND_RC(qunit, state, rc) \
132 spin_lock(&qunit->lq_lock); \
134 QDATA_DEBUG((&qunit->lq_data), "qunit(%p) lq_state(%s->%s), " \
135 "lq_rc(%d), lq_owner(%d)\n", \
136 qunit, qunit_state_names[qunit->lq_state], \
137 qunit_state_names[state], qunit->lq_rc, \
139 qunit->lq_state = state; \
140 spin_unlock(&qunit->lq_lock); \
143 int should_translate_quota (struct obd_import *imp)
148 if (imp->imp_connect_data.ocd_connect_flags & OBD_CONNECT_QUOTA64)
154 void qunit_cache_cleanup(void)
159 spin_lock(&qunit_hash_lock);
160 for (i = 0; i < NR_DQHASH; i++)
161 LASSERT(list_empty(qunit_hash + i));
162 spin_unlock(&qunit_hash_lock);
166 rc = cfs_mem_cache_destroy(qunit_cachep);
167 LASSERTF(rc == 0, "couldn't destroy qunit_cache slab\n");
173 int qunit_cache_init(void)
178 LASSERT(qunit_cachep == NULL);
179 qunit_cachep = cfs_mem_cache_create("ll_qunit_cache",
180 sizeof(struct lustre_qunit),
185 spin_lock(&qunit_hash_lock);
186 for (i = 0; i < NR_DQHASH; i++)
187 CFS_INIT_LIST_HEAD(qunit_hash + i);
188 spin_unlock(&qunit_hash_lock);
193 qunit_hashfn(struct lustre_quota_ctxt *qctxt, struct qunit_data *qdata)
194 __attribute__((__const__));
197 qunit_hashfn(struct lustre_quota_ctxt *qctxt, struct qunit_data *qdata)
199 unsigned int id = qdata->qd_id;
200 unsigned int type = QDATA_IS_GRP(qdata);
202 unsigned long tmp = ((unsigned long)qctxt >> L1_CACHE_SHIFT) ^ id;
203 tmp = (tmp * (MAXQUOTAS - type)) % NR_DQHASH;
207 /* caller must hold qunit_hash_lock */
208 static inline struct lustre_qunit *find_qunit(unsigned int hashent,
209 struct lustre_quota_ctxt *qctxt,
210 struct qunit_data *qdata)
212 struct lustre_qunit *qunit = NULL;
213 struct qunit_data *tmp;
215 LASSERT_SPIN_LOCKED(&qunit_hash_lock);
216 list_for_each_entry(qunit, qunit_hash + hashent, lq_hash) {
217 tmp = &qunit->lq_data;
218 if (qunit->lq_ctxt == qctxt &&
219 qdata->qd_id == tmp->qd_id &&
220 (qdata->qd_flags & LQUOTA_QUNIT_FLAGS) ==
221 (tmp->qd_flags & LQUOTA_QUNIT_FLAGS))
227 /* check_cur_qunit - check the current usage of qunit.
228 * @qctxt: quota context
229 * @qdata: the type of quota unit to be checked
231 * return: 1 - need acquire qunit;
232 * 2 - need release qunit;
233 * 0 - need do nothing.
237 check_cur_qunit(struct obd_device *obd,
238 struct lustre_quota_ctxt *qctxt, struct qunit_data *qdata)
240 struct super_block *sb = qctxt->lqc_sb;
241 unsigned long qunit_sz, tune_sz;
242 __u64 usage, limit, limit_org, pending_write = 0;
243 long long record = 0;
244 struct obd_quotactl *qctl;
245 struct lustre_qunit_size *lqs = NULL;
249 if (!ll_sb_any_quota_active(sb))
252 spin_lock(&qctxt->lqc_lock);
253 if (!qctxt->lqc_valid){
254 spin_unlock(&qctxt->lqc_lock);
257 spin_unlock(&qctxt->lqc_lock);
263 /* get fs quota usage & limit */
264 qctl->qc_cmd = Q_GETQUOTA;
265 qctl->qc_id = qdata->qd_id;
266 qctl->qc_type = QDATA_IS_GRP(qdata);
267 ret = fsfilt_quotactl(obd, sb, qctl);
269 if (ret == -ESRCH) /* no limit */
272 CERROR("can't get fs quota usage! (rc:%d)\n", ret);
276 if (QDATA_IS_BLK(qdata)) {
277 usage = qctl->qc_dqblk.dqb_curspace;
278 limit = qctl->qc_dqblk.dqb_bhardlimit << QUOTABLOCK_BITS;
280 usage = qctl->qc_dqblk.dqb_curinodes;
281 limit = qctl->qc_dqblk.dqb_ihardlimit;
284 /* ignore the no quota limit case; and it can avoid creating
285 * unnecessary lqs for uid/gid */
289 lqs = quota_search_lqs(LQS_KEY(QDATA_IS_GRP(qdata), qdata->qd_id),
291 if (IS_ERR(lqs) || lqs == NULL) {
292 CERROR("fail to find a lqs for %sid: %u)!\n",
293 QDATA_IS_GRP(qdata) ? "g" : "u", qdata->qd_id);
296 spin_lock(&lqs->lqs_lock);
298 if (QDATA_IS_BLK(qdata)) {
299 qunit_sz = lqs->lqs_bunit_sz;
300 tune_sz = lqs->lqs_btune_sz;
301 pending_write = lqs->lqs_bwrite_pending;
302 record = lqs->lqs_blk_rec;
303 LASSERT(!(qunit_sz % QUOTABLOCK_SIZE));
305 /* we didn't need change inode qunit size now */
306 qunit_sz = lqs->lqs_iunit_sz;
307 tune_sz = lqs->lqs_itune_sz;
308 pending_write = lqs->lqs_iwrite_pending;
309 record = lqs->lqs_ino_rec;
312 /* we don't count the MIN_QLIMIT */
313 if ((limit == MIN_QLIMIT && !QDATA_IS_BLK(qdata)) ||
314 (toqb(limit) == MIN_QLIMIT && QDATA_IS_BLK(qdata)))
317 usage += pending_write;
319 /* when a releasing quota req is sent, before it returned
320 limit is assigned a small value. limit will overflow */
321 if (limit + record < 0)
326 LASSERT(qdata->qd_count == 0);
327 if (limit <= usage + tune_sz) {
328 while (qdata->qd_count + limit <=
330 qdata->qd_count += qunit_sz;
332 } else if (limit > usage + qunit_sz + tune_sz &&
333 limit_org > qdata->qd_count + qunit_sz) {
334 while (limit - qdata->qd_count > usage + qunit_sz + tune_sz &&
335 limit_org > qdata->qd_count + qunit_sz)
336 qdata->qd_count += qunit_sz;
338 /* if there are other pending writes for this uid/gid, releasing
339 * quota is put off until the last pending write b=16645 */
340 /* if there is an ongoing quota request, a releasing request is aborted.
341 * That ongoing quota request will call this function again when
342 * it returned b=18630 */
343 if (pending_write || record) {
344 CDEBUG(D_QUOTA, "delay quota release\n");
349 quota_compute_lqs(qdata, lqs, 1, (ret == 1) ? 1 : 0);
351 CDEBUG(D_QUOTA, "type: %c, limit: "LPU64", usage: "LPU64
352 ", pending_write: "LPU64", record: %lld"
353 ", qunit_sz: %lu, tune_sz: %lu, ret: %d.\n",
354 QDATA_IS_BLK(qdata) ? 'b' : 'i', limit, usage, pending_write,
355 record, qunit_sz, tune_sz, ret);
356 LASSERT(ret == 0 || qdata->qd_count);
358 spin_unlock(&lqs->lqs_lock);
368 * Compute the remaining quota for certain gid or uid b=11693
370 int compute_remquota(struct obd_device *obd, struct lustre_quota_ctxt *qctxt,
371 struct qunit_data *qdata, int isblk)
373 struct super_block *sb = qctxt->lqc_sb;
375 struct obd_quotactl *qctl;
376 int ret = QUOTA_RET_OK;
379 if (!ll_sb_any_quota_active(sb))
380 RETURN(QUOTA_RET_NOQUOTA);
382 /* ignore root user */
383 if (qdata->qd_id == 0 && QDATA_IS_GRP(qdata) == USRQUOTA)
384 RETURN(QUOTA_RET_NOLIMIT);
390 /* get fs quota usage & limit */
391 qctl->qc_cmd = Q_GETQUOTA;
392 qctl->qc_id = qdata->qd_id;
393 qctl->qc_type = QDATA_IS_GRP(qdata);
394 ret = fsfilt_quotactl(obd, sb, qctl);
396 if (ret == -ESRCH) /* no limit */
397 ret = QUOTA_RET_NOLIMIT;
399 CDEBUG(D_QUOTA, "can't get fs quota usage! (rc:%d)",
404 usage = isblk ? qctl->qc_dqblk.dqb_curspace :
405 qctl->qc_dqblk.dqb_curinodes;
406 limit = isblk ? qctl->qc_dqblk.dqb_bhardlimit << QUOTABLOCK_BITS :
407 qctl->qc_dqblk.dqb_ihardlimit;
408 if (!limit){ /* no limit */
409 ret = QUOTA_RET_NOLIMIT;
414 qdata->qd_count = limit - usage;
423 static struct lustre_qunit *alloc_qunit(struct lustre_quota_ctxt *qctxt,
424 struct qunit_data *qdata, int opc)
426 struct lustre_qunit *qunit = NULL;
429 OBD_SLAB_ALLOC_PTR_GFP(qunit, qunit_cachep, CFS_ALLOC_IO);
433 CFS_INIT_LIST_HEAD(&qunit->lq_hash);
434 init_waitqueue_head(&qunit->lq_waitq);
435 atomic_set(&qunit->lq_refcnt, 1);
436 qunit->lq_ctxt = qctxt;
437 memcpy(&qunit->lq_data, qdata, sizeof(*qdata));
439 qunit->lq_lock = SPIN_LOCK_UNLOCKED;
440 QUNIT_SET_STATE_AND_RC(qunit, QUNIT_CREATED, 0);
441 qunit->lq_owner = cfs_curproc_pid();
445 static inline void free_qunit(struct lustre_qunit *qunit)
447 OBD_SLAB_FREE(qunit, qunit_cachep, sizeof(*qunit));
450 static inline void qunit_get(struct lustre_qunit *qunit)
452 atomic_inc(&qunit->lq_refcnt);
455 static void qunit_put(struct lustre_qunit *qunit)
457 LASSERT(atomic_read(&qunit->lq_refcnt));
458 if (atomic_dec_and_test(&qunit->lq_refcnt))
462 /* caller must hold qunit_hash_lock and release ref of qunit after using it */
463 static struct lustre_qunit *dqacq_in_flight(struct lustre_quota_ctxt *qctxt,
464 struct qunit_data *qdata)
466 unsigned int hashent = qunit_hashfn(qctxt, qdata);
467 struct lustre_qunit *qunit;
470 LASSERT_SPIN_LOCKED(&qunit_hash_lock);
471 qunit = find_qunit(hashent, qctxt, qdata);
478 insert_qunit_nolock(struct lustre_quota_ctxt *qctxt, struct lustre_qunit *qunit)
480 struct list_head *head;
482 LASSERT(list_empty(&qunit->lq_hash));
484 head = qunit_hash + qunit_hashfn(qctxt, &qunit->lq_data);
485 list_add(&qunit->lq_hash, head);
486 QUNIT_SET_STATE(qunit, QUNIT_IN_HASH);
489 static void compute_lqs_after_removing_qunit(struct lustre_qunit *qunit)
491 struct lustre_qunit_size *lqs;
493 lqs = quota_search_lqs(LQS_KEY(QDATA_IS_GRP(&qunit->lq_data),
494 qunit->lq_data.qd_id),
496 if (lqs && !IS_ERR(lqs)) {
497 spin_lock(&lqs->lqs_lock);
498 if (qunit->lq_opc == QUOTA_DQACQ)
499 quota_compute_lqs(&qunit->lq_data, lqs, 0, 1);
500 if (qunit->lq_opc == QUOTA_DQREL)
501 quota_compute_lqs(&qunit->lq_data, lqs, 0, 0);
502 spin_unlock(&lqs->lqs_lock);
503 /* this is for quota_search_lqs */
505 /* this is for schedule_dqacq */
510 static void remove_qunit_nolock(struct lustre_qunit *qunit)
512 LASSERT(!list_empty(&qunit->lq_hash));
513 LASSERT_SPIN_LOCKED(&qunit_hash_lock);
515 list_del_init(&qunit->lq_hash);
516 QUNIT_SET_STATE(qunit, QUNIT_RM_FROM_HASH);
520 void* quota_barrier(struct lustre_quota_ctxt *qctxt,
521 struct obd_quotactl *oqctl, int isblk)
523 struct lustre_qunit *qunit, *find_qunit;
526 OBD_SLAB_ALLOC(qunit, qunit_cachep, CFS_ALLOC_IO, sizeof(*qunit));
528 CERROR("locating %sunit failed for %sid %u\n",
529 isblk ? "b" : "i", oqctl->qc_type ? "g" : "u",
531 qctxt_wait_pending_dqacq(qctxt, oqctl->qc_id,
532 oqctl->qc_type, isblk);
536 INIT_LIST_HEAD(&qunit->lq_hash);
537 qunit->lq_lock = SPIN_LOCK_UNLOCKED;
538 init_waitqueue_head(&qunit->lq_waitq);
539 atomic_set(&qunit->lq_refcnt, 1);
540 qunit->lq_ctxt = qctxt;
541 qunit->lq_data.qd_id = oqctl->qc_id;
542 qunit->lq_data.qd_flags = oqctl->qc_type;
544 QDATA_SET_BLK(&qunit->lq_data);
545 QUNIT_SET_STATE_AND_RC(qunit, QUNIT_CREATED, 0);
546 /* it means it is only an invalid qunit for barrier */
547 qunit->lq_opc = QUOTA_LAST_OPC;
550 spin_lock(&qunit_hash_lock);
551 find_qunit = dqacq_in_flight(qctxt, &qunit->lq_data);
553 spin_unlock(&qunit_hash_lock);
554 qunit_put(find_qunit);
555 qctxt_wait_pending_dqacq(qctxt, oqctl->qc_id,
556 oqctl->qc_type, isblk);
557 CDEBUG(D_QUOTA, "cycle=%d\n", cycle++);
562 insert_qunit_nolock(qctxt, qunit);
563 spin_unlock(&qunit_hash_lock);
567 void quota_unbarrier(void *handle)
569 struct lustre_qunit *qunit = (struct lustre_qunit *)handle;
572 CERROR("handle is NULL\n");
576 LASSERT(qunit->lq_opc == QUOTA_LAST_OPC);
577 spin_lock(&qunit_hash_lock);
578 remove_qunit_nolock(qunit);
579 spin_unlock(&qunit_hash_lock);
580 QUNIT_SET_STATE_AND_RC(qunit, QUNIT_FINISHED, QUOTA_REQ_RETURNED);
581 wake_up(&qunit->lq_waitq);
585 #define INC_QLIMIT(limit, count) (limit == MIN_QLIMIT) ? \
586 (limit = count) : (limit += count)
589 static inline int is_master(struct lustre_quota_ctxt *qctxt)
591 return qctxt->lqc_handler ? 1 : 0;
595 schedule_dqacq(struct obd_device *obd, struct lustre_quota_ctxt *qctxt,
596 struct qunit_data *qdata, int opc, int wait,
597 struct obd_trans_info *oti);
599 static inline void qdata_to_oqaq(struct qunit_data *qdata,
600 struct quota_adjust_qunit *oqaq)
605 oqaq->qaq_flags = qdata->qd_flags;
606 oqaq->qaq_id = qdata->qd_id;
607 if (QDATA_IS_ADJBLK(qdata))
608 oqaq->qaq_bunit_sz = qdata->qd_qunit;
609 if (QDATA_IS_ADJINO(qdata))
610 oqaq->qaq_iunit_sz = qdata->qd_qunit;
614 dqacq_completion(struct obd_device *obd, struct lustre_quota_ctxt *qctxt,
615 struct qunit_data *qdata, int rc, int opc)
617 struct lustre_qunit *qunit = NULL;
618 struct super_block *sb = qctxt->lqc_sb;
620 struct quota_adjust_qunit *oqaq = NULL;
625 QDATA_DEBUG(qdata, "obd(%s): complete %s quota req\n",
626 obd->obd_name, (opc == QUOTA_DQACQ) ? "acq" : "rel");
628 /* do it only when a releasing quota req more than 5MB b=18491 */
629 if (opc == QUOTA_DQREL && qdata->qd_count >= 5242880)
630 OBD_FAIL_TIMEOUT(OBD_FAIL_QUOTA_DELAY_REL, 5);
632 /* update local operational quota file */
634 __u64 count = QUSG(qdata->qd_count, QDATA_IS_BLK(qdata));
635 struct obd_quotactl *qctl;
640 GOTO(out, err = -ENOMEM);
642 /* acq/rel qunit for specified uid/gid is serialized,
643 * so there is no race between get fs quota limit and
644 * set fs quota limit */
645 qctl->qc_cmd = Q_GETQUOTA;
646 qctl->qc_id = qdata->qd_id;
647 qctl->qc_type = QDATA_IS_GRP(qdata);
648 err = fsfilt_quotactl(obd, sb, qctl);
650 CERROR("error get quota fs limit! (rc:%d)\n", err);
654 if (QDATA_IS_BLK(qdata)) {
655 qctl->qc_dqblk.dqb_valid = QIF_BLIMITS;
656 hardlimit = &qctl->qc_dqblk.dqb_bhardlimit;
658 qctl->qc_dqblk.dqb_valid = QIF_ILIMITS;
659 hardlimit = &qctl->qc_dqblk.dqb_ihardlimit;
662 CDEBUG(D_QUOTA, "hardlimt: "LPU64"\n", *hardlimit);
669 INC_QLIMIT(*hardlimit, count);
672 LASSERTF(count < *hardlimit,
673 "id(%u) flag(%u) type(%c) isblk(%c) "
674 "count("LPU64") qd_qunit("LPU64") "
675 "hardlimit("LPU64").\n",
676 qdata->qd_id, qdata->qd_flags,
677 QDATA_IS_GRP(qdata) ? 'g' : 'u',
678 QDATA_IS_BLK(qdata) ? 'b': 'i',
679 qdata->qd_count, qdata->qd_qunit, *hardlimit);
686 /* clear quota limit */
690 qctl->qc_cmd = Q_SETQUOTA;
691 err = fsfilt_quotactl(obd, sb, qctl);
693 CERROR("error set quota fs limit! (rc:%d)\n", err);
695 QDATA_DEBUG(qdata, "%s completion\n",
696 opc == QUOTA_DQACQ ? "DQACQ" : "DQREL");
699 } else if (rc == -EDQUOT) {
700 QDATA_DEBUG(qdata, "acquire qunit got EDQUOT.\n");
701 } else if (rc == -EBUSY) {
702 QDATA_DEBUG(qdata, "it's is recovering, got EBUSY.\n");
704 CERROR("acquire qunit got error! (rc:%d)\n", rc);
707 /* remove the qunit from hash */
708 spin_lock(&qunit_hash_lock);
710 qunit = dqacq_in_flight(qctxt, qdata);
711 /* this qunit has been removed by qctxt_cleanup() */
713 spin_unlock(&qunit_hash_lock);
714 QDATA_DEBUG(qdata, "%s is discarded because qunit isn't found\n",
715 opc == QUOTA_DQACQ ? "DQACQ" : "DQREL");
719 LASSERT(opc == qunit->lq_opc);
720 /* remove this qunit from lq_hash so that new processes cannot be added
721 * to qunit->lq_waiters */
722 remove_qunit_nolock(qunit);
723 spin_unlock(&qunit_hash_lock);
725 compute_lqs_after_removing_qunit(qunit);
728 rc = QUOTA_REQ_RETURNED;
729 QUNIT_SET_STATE_AND_RC(qunit, QUNIT_FINISHED, rc);
730 /* wake up all waiters */
731 wake_up_all(&qunit->lq_waitq);
733 /* this is for dqacq_in_flight() */
735 if (rc < 0 && rc != -EDQUOT)
738 /* don't reschedule in such cases:
739 * - acq/rel failure and qunit isn't changed,
740 * but not for quota recovery.
741 * - local dqacq/dqrel.
742 * - local disk io failure.
746 GOTO(out1, err = -ENOMEM);
747 qdata_to_oqaq(qdata, oqaq);
748 /* adjust the qunit size in slaves */
749 rc1 = quota_adjust_slave_lqs(oqaq, qctxt);
752 CERROR("adjust slave's qunit size failed!(rc:%d)\n", rc1);
753 GOTO(out1, err = rc1);
755 if (err || (rc < 0 && rc != -EBUSY && rc1 == 0) || is_master(qctxt))
758 if (opc == QUOTA_DQREL && qdata->qd_count >= 5242880 &&
759 OBD_FAIL_CHECK(OBD_FAIL_QUOTA_DELAY_REL))
762 /* reschedule another dqacq/dqrel if needed */
764 qdata->qd_flags &= LQUOTA_QUNIT_FLAGS;
765 rc1 = check_cur_qunit(obd, qctxt, qdata);
768 opc = rc1 == 1 ? QUOTA_DQACQ : QUOTA_DQREL;
769 rc1 = schedule_dqacq(obd, qctxt, qdata, opc, 0, NULL);
770 QDATA_DEBUG(qdata, "reschedudle opc(%d) rc(%d)\n", opc, rc1);
773 /* this is for alloc_qunit() */
778 struct dqacq_async_args {
779 struct lustre_quota_ctxt *aa_ctxt;
780 struct lustre_qunit *aa_qunit;
783 static int dqacq_interpret(const struct lu_env *env,
784 struct ptlrpc_request *req, void *data, int rc)
786 struct dqacq_async_args *aa = (struct dqacq_async_args *)data;
787 struct lustre_quota_ctxt *qctxt = aa->aa_ctxt;
788 struct obd_device_target *obt = qctxt->lqc_obt;
789 struct lustre_qunit *qunit = aa->aa_qunit;
790 struct obd_device *obd = req->rq_import->imp_obd;
791 struct qunit_data *qdata = NULL;
795 LASSERT(req->rq_import);
797 down_read(&obt->obt_rwsem);
798 /* if a quota req timeouts or is dropped, we should update quota
799 * statistics which will be handled in dqacq_completion. And in
800 * this situation we should get qdata from request instead of
802 qdata = quota_get_qdata(req, (rc != 0) ? QUOTA_REQUEST : QUOTA_REPLY,
806 DEBUG_REQ(D_ERROR, req,
807 "error unpacking qunit_data(rc: %ld)\n",
809 qdata = &qunit->lq_data;
812 QDATA_DEBUG(qdata, "qdata: interpret rc(%d).\n", rc);
813 QDATA_DEBUG((&qunit->lq_data), "lq_data: \n");
815 if (qdata->qd_id != qunit->lq_data.qd_id ||
816 OBD_FAIL_CHECK(OBD_FAIL_QUOTA_RET_QDATA)) {
817 CERROR("the returned qd_id isn't expected!"
818 "(qdata: %u, lq_data: %u)\n", qdata->qd_id,
819 qunit->lq_data.qd_id);
820 qdata->qd_id = qunit->lq_data.qd_id;
823 if (QDATA_IS_GRP(qdata) != QDATA_IS_GRP(&qunit->lq_data)) {
824 CERROR("the returned grp/usr isn't expected!"
825 "(qdata: %u, lq_data: %u)\n", qdata->qd_flags,
826 qunit->lq_data.qd_flags);
827 if (QDATA_IS_GRP(&qunit->lq_data))
828 QDATA_SET_GRP(qdata);
830 QDATA_CLR_GRP(qdata);
833 if (qdata->qd_count > qunit->lq_data.qd_count) {
834 CERROR("the returned qd_count isn't expected!"
835 "(qdata: "LPU64", lq_data: "LPU64")\n", qdata->qd_count,
836 qunit->lq_data.qd_count);
840 if (unlikely(rc == -ESRCH))
841 CERROR("quota for %s has been enabled by master, but disabled "
842 "by slave.\n", QDATA_IS_GRP(qdata) ? "group" : "user");
844 rc = dqacq_completion(obd, qctxt, qdata, rc,
845 lustre_msg_get_opc(req->rq_reqmsg));
847 up_read(&obt->obt_rwsem);
852 * check if quota master is online
854 int check_qm(struct lustre_quota_ctxt *qctxt)
859 spin_lock(&qctxt->lqc_lock);
860 /* quit waiting when mds is back or qctxt is cleaned up */
861 rc = qctxt->lqc_import || !qctxt->lqc_valid;
862 spin_unlock(&qctxt->lqc_lock);
867 /* wake up all waiting threads when lqc_import is NULL */
868 void dqacq_interrupt(struct lustre_quota_ctxt *qctxt)
870 struct lustre_qunit *qunit, *tmp;
874 spin_lock(&qunit_hash_lock);
875 for (i = 0; i < NR_DQHASH; i++) {
876 list_for_each_entry_safe(qunit, tmp, &qunit_hash[i], lq_hash) {
877 if (qunit->lq_ctxt != qctxt)
880 /* Wake up all waiters. Do not change lq_state.
881 * The waiters will check lq_rc which is kept as 0
882 * if no others change it, then the waiters will return
883 * -EAGAIN to caller who can perform related quota
884 * acq/rel if necessary. */
885 wake_up_all(&qunit->lq_waitq);
888 spin_unlock(&qunit_hash_lock);
892 static int got_qunit(struct lustre_qunit *qunit, int is_master)
894 struct lustre_quota_ctxt *qctxt = qunit->lq_ctxt;
898 spin_lock(&qunit->lq_lock);
899 switch (qunit->lq_state) {
901 case QUNIT_RM_FROM_HASH:
907 CERROR("invalid qunit state %d\n", qunit->lq_state);
909 spin_unlock(&qunit->lq_lock);
912 spin_lock(&qctxt->lqc_lock);
913 rc = !qctxt->lqc_valid;
915 rc |= !qctxt->lqc_import;
916 spin_unlock(&qctxt->lqc_lock);
923 revoke_lqs_rec(struct lustre_qunit_size *lqs, struct qunit_data *qdata, int opc)
925 /* revoke lqs_xxx_rec which is computed in check_cur_qunit
927 spin_lock(&lqs->lqs_lock);
928 quota_compute_lqs(qdata, lqs, 0, (opc == QUOTA_DQACQ) ? 1 : 0);
929 spin_unlock(&lqs->lqs_lock);
933 schedule_dqacq(struct obd_device *obd, struct lustre_quota_ctxt *qctxt,
934 struct qunit_data *qdata, int opc, int wait,
935 struct obd_trans_info *oti)
937 struct lustre_qunit *qunit, *empty;
938 struct l_wait_info lwi = { 0 };
939 struct ptlrpc_request *req;
940 struct dqacq_async_args *aa;
941 struct obd_import *imp = NULL;
942 struct lustre_qunit_size *lqs = NULL;
943 struct timeval work_start;
944 struct timeval work_end;
949 LASSERT(opc == QUOTA_DQACQ || opc == QUOTA_DQREL);
950 do_gettimeofday(&work_start);
952 lqs = quota_search_lqs(LQS_KEY(QDATA_IS_GRP(qdata), qdata->qd_id),
954 if (lqs == NULL || IS_ERR(lqs)) {
955 CERROR("Can't find the lustre qunit size!\n");
959 if ((empty = alloc_qunit(qctxt, qdata, opc)) == NULL) {
960 revoke_lqs_rec(lqs, qdata, opc);
961 /* this is for quota_search_lqs */
966 OBD_FAIL_TIMEOUT(OBD_FAIL_QUOTA_DELAY_SD, 5);
968 spin_lock(&qunit_hash_lock);
969 qunit = dqacq_in_flight(qctxt, qdata);
971 spin_unlock(&qunit_hash_lock);
974 revoke_lqs_rec(lqs, qdata, opc);
975 /* this is for quota_search_lqs */
977 goto wait_completion;
981 insert_qunit_nolock(qctxt, qunit);
982 spin_unlock(&qunit_hash_lock);
984 /* From here, the quota request will be sent anyway.
985 * When this qdata request returned or is cancelled,
986 * lqs_putref will be called at that time */
988 /* this is for quota_search_lqs */
991 QDATA_DEBUG(qdata, "obd(%s): send %s quota req\n",
992 obd->obd_name, (opc == QUOTA_DQACQ) ? "acq" : "rel");
993 /* master is going to dqacq/dqrel from itself */
994 if (is_master(qctxt)) {
996 QDATA_DEBUG(qdata, "local %s.\n",
997 opc == QUOTA_DQACQ ? "DQACQ" : "DQREL");
998 QDATA_SET_CHANGE_QS(qdata);
999 rc = qctxt->lqc_handler(obd, qdata, opc);
1000 rc2 = dqacq_completion(obd, qctxt, qdata, rc, opc);
1001 /* this is for qunit_get() */
1004 do_gettimeofday(&work_end);
1005 timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
1006 if (opc == QUOTA_DQACQ)
1007 lprocfs_counter_add(qctxt->lqc_stats,
1008 wait ? LQUOTA_SYNC_ACQ : LQUOTA_ASYNC_ACQ,
1011 lprocfs_counter_add(qctxt->lqc_stats,
1012 wait ? LQUOTA_SYNC_REL : LQUOTA_ASYNC_REL,
1014 RETURN(rc ? rc : rc2);
1017 spin_lock(&qctxt->lqc_lock);
1018 if (!qctxt->lqc_import) {
1019 spin_unlock(&qctxt->lqc_lock);
1020 QDATA_DEBUG(qdata, "lqc_import is invalid.\n");
1022 spin_lock(&qunit_hash_lock);
1023 remove_qunit_nolock(qunit);
1024 spin_unlock(&qunit_hash_lock);
1026 compute_lqs_after_removing_qunit(qunit);
1028 QUNIT_SET_STATE_AND_RC(qunit, QUNIT_FINISHED, -EAGAIN);
1029 wake_up_all(&qunit->lq_waitq);
1031 /* this is for qunit_get() */
1033 /* this for alloc_qunit() */
1035 spin_lock(&qctxt->lqc_lock);
1036 if (wait && !qctxt->lqc_import) {
1037 spin_unlock(&qctxt->lqc_lock);
1039 LASSERT(oti && oti->oti_thread &&
1040 oti->oti_thread->t_watchdog);
1042 lc_watchdog_disable(oti->oti_thread->t_watchdog);
1043 CDEBUG(D_QUOTA, "sleep for quota master\n");
1044 l_wait_event(qctxt->lqc_wait_for_qmaster,
1045 check_qm(qctxt), &lwi);
1046 CDEBUG(D_QUOTA, "wake up when quota master is back\n");
1047 lc_watchdog_touch(oti->oti_thread->t_watchdog,
1048 GET_TIMEOUT(oti->oti_thread->t_svc));
1050 spin_unlock(&qctxt->lqc_lock);
1055 imp = class_import_get(qctxt->lqc_import);
1056 spin_unlock(&qctxt->lqc_lock);
1058 /* build dqacq/dqrel request */
1061 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_QUOTA_DQACQ,
1062 LUSTRE_MDS_VERSION, opc);
1063 class_import_put(imp);
1065 CERROR("Can't alloc request\n");
1066 dqacq_completion(obd, qctxt, qdata, -ENOMEM, opc);
1067 /* this is for qunit_get() */
1072 ptlrpc_request_set_replen(req);
1073 req->rq_no_resend = req->rq_no_delay = 1;
1074 rc = quota_copy_qdata(req, qdata, QUOTA_REQUEST, QUOTA_IMPORT);
1076 CERROR("Can't pack qunit_data(rc: %d)\n", rc);
1077 ptlrpc_req_finished(req);
1078 dqacq_completion(obd, qctxt, qdata, -EPROTO, opc);
1079 /* this is for qunit_get() */
1084 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
1085 aa = ptlrpc_req_async_args(req);
1086 aa->aa_ctxt = qctxt;
1087 aa->aa_qunit = qunit;
1089 req->rq_interpret_reply = dqacq_interpret;
1090 ptlrpcd_add_req(req, PSCOPE_OTHER);
1092 QDATA_DEBUG(qdata, "%s scheduled.\n",
1093 opc == QUOTA_DQACQ ? "DQACQ" : "DQREL");
1095 if (wait && qunit) {
1096 struct qunit_data *p = &qunit->lq_data;
1098 QDATA_DEBUG(p, "qunit(%p) is waiting for dqacq.\n", qunit);
1099 l_wait_event(qunit->lq_waitq, got_qunit(qunit, is_master(qctxt)),
1101 /* rc = -EAGAIN, it means the quota master isn't ready yet
1102 * rc = QUOTA_REQ_RETURNED, it means a quota req is finished;
1103 * rc = -EDQUOT, it means out of quota
1104 * rc = -EBUSY, it means recovery is happening
1105 * other rc < 0, it means real errors, functions who call
1106 * schedule_dqacq should take care of this */
1107 spin_lock(&qunit->lq_lock);
1109 spin_unlock(&qunit->lq_lock);
1110 CDEBUG(D_QUOTA, "qunit(%p) finishes waiting: id(%u) flag(%u) "
1111 "rc(%d) owner(%d)\n", qunit, qunit->lq_data.qd_id,
1112 qunit->lq_data.qd_flags, rc, qunit->lq_owner);
1116 do_gettimeofday(&work_end);
1117 timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
1118 if (opc == QUOTA_DQACQ)
1119 lprocfs_counter_add(qctxt->lqc_stats,
1120 wait ? LQUOTA_SYNC_ACQ : LQUOTA_ASYNC_ACQ,
1123 lprocfs_counter_add(qctxt->lqc_stats,
1124 wait ? LQUOTA_SYNC_REL : LQUOTA_ASYNC_REL,
1131 qctxt_adjust_qunit(struct obd_device *obd, struct lustre_quota_ctxt *qctxt,
1132 const unsigned int id[], __u32 isblk, int wait,
1133 struct obd_trans_info *oti)
1135 int rc = 0, i = USRQUOTA;
1136 struct qunit_data qdata[MAXQUOTAS];
1139 if (quota_is_set(obd, id, isblk ? QB_SET : QI_SET) == 0)
1142 for (i = 0; i < MAXQUOTAS; i++) {
1143 qdata[i].qd_id = id[i];
1144 qdata[i].qd_flags = i;
1146 QDATA_SET_BLK(&qdata[i]);
1147 qdata[i].qd_count = 0;
1149 rc = check_cur_qunit(obd, qctxt, &qdata[i]);
1152 /* need acquire or release */
1153 opc = rc == 1 ? QUOTA_DQACQ : QUOTA_DQREL;
1154 rc = schedule_dqacq(obd, qctxt, &qdata[i], opc,
1158 } else if (wait == 1) {
1159 /* when wait equates 1, that means mds_quota_acquire
1160 * or filter_quota_acquire is calling it. */
1161 rc = qctxt_wait_pending_dqacq(qctxt, id[i], i, isblk);
1171 qctxt_wait_pending_dqacq(struct lustre_quota_ctxt *qctxt, unsigned int id,
1172 unsigned short type, int isblk)
1174 struct lustre_qunit *qunit = NULL;
1175 struct qunit_data qdata;
1176 struct timeval work_start;
1177 struct timeval work_end;
1179 struct l_wait_info lwi = { 0 };
1183 do_gettimeofday(&work_start);
1185 qdata.qd_flags = type;
1187 QDATA_SET_BLK(&qdata);
1190 spin_lock(&qunit_hash_lock);
1191 qunit = dqacq_in_flight(qctxt, &qdata);
1192 spin_unlock(&qunit_hash_lock);
1195 struct qunit_data *p = &qunit->lq_data;
1197 QDATA_DEBUG(p, "qunit(%p) is waiting for dqacq.\n", qunit);
1198 l_wait_event(qunit->lq_waitq, got_qunit(qunit, is_master(qctxt)),
1200 CDEBUG(D_QUOTA, "qunit(%p) finishes waiting: rc(%d) "
1201 "owner(%d)\n", qunit, qunit->lq_rc, qunit->lq_owner);
1202 /* keep same as schedule_dqacq() b=17030 */
1203 spin_lock(&qunit->lq_lock);
1205 spin_unlock(&qunit->lq_lock);
1206 /* this is for dqacq_in_flight() */
1208 do_gettimeofday(&work_end);
1209 timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
1210 lprocfs_counter_add(qctxt->lqc_stats,
1211 isblk ? LQUOTA_WAIT_PENDING_BLK_QUOTA :
1212 LQUOTA_WAIT_PENDING_INO_QUOTA,
1215 do_gettimeofday(&work_end);
1216 timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
1217 lprocfs_counter_add(qctxt->lqc_stats,
1218 isblk ? LQUOTA_NOWAIT_PENDING_BLK_QUOTA :
1219 LQUOTA_NOWAIT_PENDING_INO_QUOTA,
1227 qctxt_init(struct obd_device *obd, dqacq_handler_t handler)
1229 struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
1230 struct obd_device_target *obt = &obd->u.obt;
1231 struct super_block *sb = obt->obt_sb;
1237 rc = ptlrpcd_addref();
1241 cfs_waitq_init(&qctxt->lqc_wait_for_qmaster);
1242 cfs_waitq_init(&qctxt->lqc_lqs_waitq);
1243 atomic_set(&qctxt->lqc_lqs, 0);
1244 spin_lock_init(&qctxt->lqc_lock);
1245 spin_lock(&qctxt->lqc_lock);
1246 qctxt->lqc_handler = handler;
1248 qctxt->lqc_obt = obt;
1249 qctxt->lqc_import = NULL;
1250 qctxt->lqc_recovery = 0;
1251 qctxt->lqc_switch_qs = 1; /* Change qunit size in default setting */
1252 qctxt->lqc_valid = 1;
1253 qctxt->lqc_cqs_boundary_factor = 4;
1254 qctxt->lqc_cqs_least_bunit = PTLRPC_MAX_BRW_SIZE;
1255 qctxt->lqc_cqs_least_iunit = 2;
1256 qctxt->lqc_cqs_qs_factor = 2;
1257 qctxt->lqc_flags = 0;
1258 QUOTA_MASTER_UNREADY(qctxt);
1259 qctxt->lqc_bunit_sz = default_bunit_sz;
1260 qctxt->lqc_btune_sz = default_bunit_sz / 100 * default_btune_ratio;
1261 qctxt->lqc_iunit_sz = default_iunit_sz;
1262 qctxt->lqc_itune_sz = default_iunit_sz * default_itune_ratio / 100;
1263 qctxt->lqc_switch_seconds = 300; /* enlarging will wait 5 minutes
1264 * after the last shrinking */
1265 qctxt->lqc_sync_blk = 0;
1266 spin_unlock(&qctxt->lqc_lock);
1268 qctxt->lqc_lqs_hash = cfs_hash_create("LQS_HASH",
1271 &lqs_hash_ops, CFS_HASH_REHASH);
1272 if (!qctxt->lqc_lqs_hash) {
1273 CERROR("initialize hash lqs for %s error!\n", obd->obd_name);
1278 rc = lquota_proc_setup(obd, is_master(qctxt));
1280 CERROR("initialize proc for %s error!\n", obd->obd_name);
1286 static int check_lqs(struct lustre_quota_ctxt *qctxt)
1291 rc = !atomic_read(&qctxt->lqc_lqs);
1297 void hash_put_lqs(void *obj, void *data)
1299 lqs_putref((struct lustre_qunit_size *)obj);
1302 void qctxt_cleanup(struct lustre_quota_ctxt *qctxt, int force)
1304 struct lustre_qunit *qunit, *tmp;
1305 struct list_head tmp_list;
1306 struct l_wait_info lwi = { 0 };
1307 struct obd_device_target *obt = qctxt->lqc_obt;
1311 CFS_INIT_LIST_HEAD(&tmp_list);
1313 spin_lock(&qctxt->lqc_lock);
1314 qctxt->lqc_valid = 0;
1315 spin_unlock(&qctxt->lqc_lock);
1317 spin_lock(&qunit_hash_lock);
1318 for (i = 0; i < NR_DQHASH; i++) {
1319 list_for_each_entry_safe(qunit, tmp, &qunit_hash[i], lq_hash) {
1320 if (qunit->lq_ctxt != qctxt)
1322 remove_qunit_nolock(qunit);
1323 list_add(&qunit->lq_hash, &tmp_list);
1326 spin_unlock(&qunit_hash_lock);
1328 list_for_each_entry_safe(qunit, tmp, &tmp_list, lq_hash) {
1329 list_del_init(&qunit->lq_hash);
1330 compute_lqs_after_removing_qunit(qunit);
1332 /* wake up all waiters */
1333 QUNIT_SET_STATE_AND_RC(qunit, QUNIT_FINISHED, 0);
1334 wake_up_all(&qunit->lq_waitq);
1338 /* after qctxt_cleanup, qctxt might be freed, then check_qm() is
1339 * unpredicted. So we must wait until lqc_wait_for_qmaster is empty */
1340 while (cfs_waitq_active(&qctxt->lqc_wait_for_qmaster)) {
1341 cfs_waitq_signal(&qctxt->lqc_wait_for_qmaster);
1342 cfs_schedule_timeout(CFS_TASK_INTERRUPTIBLE,
1343 cfs_time_seconds(1));
1346 cfs_hash_for_each_safe(qctxt->lqc_lqs_hash, hash_put_lqs, NULL);
1347 l_wait_event(qctxt->lqc_lqs_waitq, check_lqs(qctxt), &lwi);
1348 down_write(&obt->obt_rwsem);
1349 cfs_hash_destroy(qctxt->lqc_lqs_hash);
1350 qctxt->lqc_lqs_hash = NULL;
1351 up_write(&obt->obt_rwsem);
1356 if (lquota_proc_cleanup(qctxt))
1357 CERROR("cleanup proc error!\n");
1363 struct qslave_recov_thread_data {
1364 struct obd_device *obd;
1365 struct lustre_quota_ctxt *qctxt;
1366 struct completion comp;
1369 /* FIXME only recovery block quota by now */
1370 static int qslave_recovery_main(void *arg)
1372 struct qslave_recov_thread_data *data = arg;
1373 struct obd_device *obd = data->obd;
1374 struct lustre_quota_ctxt *qctxt = data->qctxt;
1379 cfs_daemonize_ctxt("qslave_recovd");
1382 class_incref(obd, "qslave_recovd_filter", obd);
1384 complete(&data->comp);
1386 spin_lock(&qctxt->lqc_lock);
1387 if (qctxt->lqc_recovery) {
1388 spin_unlock(&qctxt->lqc_lock);
1389 class_decref(obd, "qslave_recovd_filter", obd);
1392 qctxt->lqc_recovery = 1;
1393 spin_unlock(&qctxt->lqc_lock);
1396 for (type = USRQUOTA; type < MAXQUOTAS; type++) {
1397 struct qunit_data qdata;
1398 struct quota_info *dqopt = sb_dqopt(qctxt->lqc_sb);
1399 struct list_head id_list;
1400 struct dquot_id *dqid, *tmp;
1403 LOCK_DQONOFF_MUTEX(dqopt);
1404 if (!ll_sb_has_quota_active(qctxt->lqc_sb, type)) {
1405 UNLOCK_DQONOFF_MUTEX(dqopt);
1409 LASSERT(dqopt->files[type] != NULL);
1410 CFS_INIT_LIST_HEAD(&id_list);
1411 #ifndef KERNEL_SUPPORTS_QUOTA_READ
1412 rc = fsfilt_qids(obd, dqopt->files[type], NULL, type, &id_list);
1414 rc = fsfilt_qids(obd, NULL, dqopt->files[type], type, &id_list);
1416 UNLOCK_DQONOFF_MUTEX(dqopt);
1418 CERROR("Get ids from quota file failed. (rc:%d)\n", rc);
1420 list_for_each_entry_safe(dqid, tmp, &id_list, di_link) {
1421 list_del_init(&dqid->di_link);
1422 /* skip slave recovery on itself */
1423 if (is_master(qctxt))
1425 if (rc && rc != -EBUSY)
1428 qdata.qd_id = dqid->di_id;
1429 qdata.qd_flags = type;
1430 QDATA_SET_BLK(&qdata);
1433 ret = check_cur_qunit(obd, qctxt, &qdata);
1436 opc = ret == 1 ? QUOTA_DQACQ : QUOTA_DQREL;
1437 rc = schedule_dqacq(obd, qctxt, &qdata, opc,
1445 if (rc && rc != -EBUSY)
1446 CERROR("qslave recovery failed! (id:%d type:%d "
1447 " rc:%d)\n", dqid->di_id, type, rc);
1453 spin_lock(&qctxt->lqc_lock);
1454 qctxt->lqc_recovery = 0;
1455 spin_unlock(&qctxt->lqc_lock);
1456 class_decref(obd, "qslave_recovd_filter", obd);
1461 qslave_start_recovery(struct obd_device *obd, struct lustre_quota_ctxt *qctxt)
1463 struct qslave_recov_thread_data data;
1467 if (!ll_sb_any_quota_active(qctxt->lqc_sb))
1472 init_completion(&data.comp);
1474 rc = kernel_thread(qslave_recovery_main, &data, CLONE_VM|CLONE_FILES);
1476 CERROR("Cannot start quota recovery thread: rc %d\n", rc);
1479 wait_for_completion(&data.comp);
1484 int quota_is_on(struct lustre_quota_ctxt *qctxt, struct obd_quotactl *oqctl)
1488 for (type = USRQUOTA; type < MAXQUOTAS; type++) {
1489 if (!Q_TYPESET(oqctl, type))
1491 if (!(qctxt->lqc_flags & UGQUOTA2LQC(oqctl->qc_type)))
1497 int quota_is_off(struct lustre_quota_ctxt *qctxt, struct obd_quotactl *oqctl)
1501 for (type = USRQUOTA; type < MAXQUOTAS; type++) {
1502 if (!Q_TYPESET(oqctl, type))
1504 if (qctxt->lqc_flags & UGQUOTA2LQC(oqctl->qc_type))
1511 * When quotaon, build a lqs for every uid/gid who has been set limitation
1512 * for quota. After quota_search_lqs, it will hold one ref for the lqs.
1513 * It will be released when qctxt_cleanup() is executed b=18574
1515 * Should be called with obt->obt_quotachecking held. b=20152
1517 void build_lqs(struct obd_device *obd)
1519 struct obd_device_target *obt = &obd->u.obt;
1520 struct lustre_quota_ctxt *qctxt = &obt->obt_qctxt;
1521 struct list_head id_list;
1524 LASSERT_SEM_LOCKED(&obt->obt_quotachecking);
1525 INIT_LIST_HEAD(&id_list);
1526 for (i = 0; i < MAXQUOTAS; i++) {
1527 struct dquot_id *dqid, *tmp;
1529 if (sb_dqopt(qctxt->lqc_sb)->files[i] == NULL)
1532 #ifndef KERNEL_SUPPORTS_QUOTA_READ
1533 rc = fsfilt_qids(obd, sb_dqopt(qctxt->lqc_sb)->files[i], NULL,
1536 rc = fsfilt_qids(obd, NULL, sb_dqopt(qctxt->lqc_sb)->files[i],
1540 CERROR("%s: failed to get %s qids!\n", obd->obd_name,
1541 i ? "group" : "user");
1545 list_for_each_entry_safe(dqid, tmp, &id_list,
1547 struct lustre_qunit_size *lqs;
1549 list_del_init(&dqid->di_link);
1550 lqs = quota_search_lqs(LQS_KEY(i, dqid->di_id),
1552 if (lqs && !IS_ERR(lqs)) {
1553 lqs->lqs_flags |= dqid->di_flag;
1556 CERROR("%s: failed to create a lqs for %sid %u"
1557 "\n", obd->obd_name, i ? "g" : "u",
1567 * lqs<->qctxt hash operations
1571 * string hashing using djb2 hash algorithm
1574 lqs_hash(cfs_hash_t *hs, void *key, unsigned mask)
1576 struct quota_adjust_qunit *lqs_key;
1581 lqs_key = (struct quota_adjust_qunit *)key;
1582 hash = (QAQ_IS_GRP(lqs_key) ? 5381 : 5387) * lqs_key->qaq_id;
1584 RETURN(hash & mask);
1588 lqs_compare(void *key, struct hlist_node *hnode)
1590 struct lustre_qunit_size *q;
1595 q = hlist_entry(hnode, struct lustre_qunit_size, lqs_hash);
1597 spin_lock(&q->lqs_lock);
1598 rc = (q->lqs_key == *((unsigned long long *)key));
1599 spin_unlock(&q->lqs_lock);
1605 lqs_get(struct hlist_node *hnode)
1607 struct lustre_qunit_size *q =
1608 hlist_entry(hnode, struct lustre_qunit_size, lqs_hash);
1617 lqs_put(struct hlist_node *hnode)
1619 struct lustre_qunit_size *q =
1620 hlist_entry(hnode, struct lustre_qunit_size, lqs_hash);
1629 lqs_exit(struct hlist_node *hnode)
1631 struct lustre_qunit_size *q =
1632 hlist_entry(hnode, struct lustre_qunit_size, lqs_hash);
1636 * Nothing should be left. User of lqs put it and
1637 * lqs also was deleted from table by this time
1638 * so we should have 0 refs.
1640 LASSERTF(atomic_read(&q->lqs_refcount) == 0,
1641 "Busy lqs %p with %d refs\n", q,
1642 atomic_read(&q->lqs_refcount));
1647 static cfs_hash_ops_t lqs_hash_ops = {
1648 .hs_hash = lqs_hash,
1649 .hs_compare = lqs_compare,
1654 #endif /* HAVE_QUOTA_SUPPORT */