lustre/quota/quota_master.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   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.
  11  *
  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).
  17  *
  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
  21  *
  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
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lustre/quota/quota_master.c
  37  *
  38  * Lustre Quota Master request handler
  39  *
  40  * Author: Niu YaWei <niu@clusterfs.com>
  41  */
  42
  43 #ifndef EXPORT_SYMTAB
  44 # define EXPORT_SYMTAB
  45 #endif
  46
  47 #define DEBUG_SUBSYSTEM S_LQUOTA
  48
  49 #include <linux/version.h>
  50 #include <linux/fs.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>
  56 #include <linux/quota.h>
  57
  58 #include <obd_class.h>
  59 #include <lustre_quota.h>
  60 #include <lustre_fsfilt.h>
  61 #include <lustre_mds.h>
  62
  63 #include "quota_internal.h"
  64
  65 #ifdef HAVE_QUOTA_SUPPORT
  66
  67 /* lock ordering: mds->mds_qonoff_sem > dquot->dq_sem */
  68 static struct list_head lustre_dquot_hash[NR_DQHASH];
  69 static spinlock_t dquot_hash_lock = SPIN_LOCK_UNLOCKED;
  70
  71 cfs_mem_cache_t *lustre_dquot_cachep;
  72
  73 int lustre_dquot_init(void)
  74 {
  75         int i;
  76         ENTRY;
  77
  78         LASSERT(lustre_dquot_cachep == NULL);
  79         lustre_dquot_cachep = cfs_mem_cache_create("lustre_dquot_cache",
  80                                                    sizeof(struct lustre_dquot),
  81                                                    0, 0);
  82         if (!lustre_dquot_cachep)
  83                 return (-ENOMEM);
  84
  85         for (i = 0; i < NR_DQHASH; i++) {
  86                 CFS_INIT_LIST_HEAD(lustre_dquot_hash + i);
  87         }
  88         RETURN(0);
  89 }
  90
  91 void lustre_dquot_exit(void)
  92 {
  93         int i;
  94         ENTRY;
  95         /* FIXME cleanup work ?? */
  96
  97         for (i = 0; i < NR_DQHASH; i++) {
  98                 LASSERT(list_empty(lustre_dquot_hash + i));
  99         }
 100         if (lustre_dquot_cachep) {
 101                 int rc;
 102                 rc = cfs_mem_cache_destroy(lustre_dquot_cachep);
 103                 LASSERTF(rc == 0,"couldn't destroy lustre_dquot_cachep slab\n");
 104                 lustre_dquot_cachep = NULL;
 105         }
 106         EXIT;
 107 }
 108
 109 static inline int
 110 dquot_hashfn(struct lustre_quota_info *info, unsigned int id, int type)
 111              __attribute__((__const__));
 112
 113 static inline int
 114 dquot_hashfn(struct lustre_quota_info *info, unsigned int id, int type)
 115 {
 116         unsigned long tmp = ((unsigned long)info >> L1_CACHE_SHIFT) ^ id;
 117         tmp = (tmp * (MAXQUOTAS - type)) % NR_DQHASH;
 118         return tmp;
 119 }
 120
 121 /* caller must hold dquot_hash_lock */
 122 static struct lustre_dquot *find_dquot(int hashent,
 123                                        struct lustre_quota_info *lqi, qid_t id,
 124                                        int type)
 125 {
 126         struct lustre_dquot *dquot;
 127         ENTRY;
 128
 129         LASSERT_SPIN_LOCKED(&dquot_hash_lock);
 130         list_for_each_entry(dquot, &lustre_dquot_hash[hashent], dq_hash) {
 131                 if (dquot->dq_info == lqi &&
 132                     dquot->dq_id == id && dquot->dq_type == type)
 133                         RETURN(dquot);
 134         }
 135         RETURN(NULL);
 136 }
 137
 138 static struct lustre_dquot *alloc_dquot(struct lustre_quota_info *lqi,
 139                                         qid_t id, int type)
 140 {
 141         struct lustre_dquot *dquot = NULL;
 142         ENTRY;
 143
 144         OBD_SLAB_ALLOC_PTR_GFP(dquot, lustre_dquot_cachep, CFS_ALLOC_IO);
 145         if (dquot == NULL)
 146                 RETURN(NULL);
 147
 148         CFS_INIT_LIST_HEAD(&dquot->dq_hash);
 149         init_mutex_locked(&dquot->dq_sem);
 150         dquot->dq_refcnt = 1;
 151         dquot->dq_info = lqi;
 152         dquot->dq_id = id;
 153         dquot->dq_type = type;
 154         dquot->dq_status = DQ_STATUS_AVAIL;
 155
 156         RETURN(dquot);
 157 }
 158
 159 static void free_dquot(struct lustre_dquot *dquot)
 160 {
 161         OBD_SLAB_FREE(dquot, lustre_dquot_cachep, sizeof(*dquot));
 162 }
 163
 164 static void insert_dquot_nolock(struct lustre_dquot *dquot)
 165 {
 166         struct list_head *head = lustre_dquot_hash +
 167             dquot_hashfn(dquot->dq_info, dquot->dq_id, dquot->dq_type);
 168         LASSERT(list_empty(&dquot->dq_hash));
 169         list_add(&dquot->dq_hash, head);
 170 }
 171
 172 static void remove_dquot_nolock(struct lustre_dquot *dquot)
 173 {
 174         LASSERT(!list_empty(&dquot->dq_hash));
 175         list_del_init(&dquot->dq_hash);
 176 }
 177
 178 static void lustre_dqput(struct lustre_dquot *dquot)
 179 {
 180         ENTRY;
 181         spin_lock(&dquot_hash_lock);
 182         LASSERT(dquot->dq_refcnt);
 183         dquot->dq_refcnt--;
 184         if (!dquot->dq_refcnt) {
 185                 remove_dquot_nolock(dquot);
 186                 free_dquot(dquot);
 187         }
 188         spin_unlock(&dquot_hash_lock);
 189         EXIT;
 190 }
 191
 192 static struct lustre_dquot *lustre_dqget(struct obd_device *obd,
 193                                          struct lustre_quota_info *lqi,
 194                                          qid_t id, int type)
 195 {
 196         unsigned int hashent = dquot_hashfn(lqi, id, type);
 197         struct lustre_dquot *dquot, *empty;
 198         ENTRY;
 199
 200         if ((empty = alloc_dquot(lqi, id, type)) == NULL)
 201                 RETURN(ERR_PTR(-ENOMEM));
 202
 203         spin_lock(&dquot_hash_lock);
 204         if ((dquot = find_dquot(hashent, lqi, id, type)) != NULL) {
 205                 dquot->dq_refcnt++;
 206                 spin_unlock(&dquot_hash_lock);
 207                 free_dquot(empty);
 208         } else {
 209                 int rc;
 210
 211                 dquot = empty;
 212                 insert_dquot_nolock(dquot);
 213                 spin_unlock(&dquot_hash_lock);
 214
 215                 rc = fsfilt_dquot(obd, dquot, QFILE_RD_DQUOT);
 216                 up(&dquot->dq_sem);
 217                 if (rc) {
 218                         CERROR("can't read dquot from admin quotafile! "
 219                                "(rc:%d)\n", rc);
 220                         lustre_dqput(dquot);
 221                         RETURN(ERR_PTR(rc));
 222                 }
 223
 224         }
 225
 226         LASSERT(dquot);
 227         RETURN(dquot);
 228 }
 229
 230 static void init_oqaq(struct quota_adjust_qunit *oqaq,
 231                       struct lustre_quota_ctxt *qctxt,
 232                       qid_t id, int type)
 233 {
 234         struct lustre_qunit_size *lqs = NULL;
 235
 236         oqaq->qaq_id = id;
 237         oqaq->qaq_flags = type;
 238         quota_search_lqs(NULL, oqaq, qctxt, &lqs);
 239         if (lqs) {
 240                 spin_lock(&lqs->lqs_lock);
 241                 oqaq->qaq_bunit_sz = lqs->lqs_bunit_sz;
 242                 oqaq->qaq_iunit_sz = lqs->lqs_iunit_sz;
 243                 oqaq->qaq_flags    = lqs->lqs_flags;
 244                 spin_unlock(&lqs->lqs_lock);
 245                 lqs_putref(lqs);
 246         } else {
 247                 CDEBUG(D_QUOTA, "Can't find the lustre qunit size!\n");
 248                 oqaq->qaq_bunit_sz = qctxt->lqc_bunit_sz;
 249                 oqaq->qaq_iunit_sz = qctxt->lqc_iunit_sz;
 250         }
 251 }
 252
 253 int dqacq_adjust_qunit_sz(struct obd_device *obd, qid_t id, int type,
 254                           __u32 is_blk)
 255 {
 256         struct mds_obd *mds = &obd->u.mds;
 257         struct lustre_quota_ctxt *qctxt = &mds->mds_obt.obt_qctxt;
 258         struct obd_device *lov_mds_obd = class_exp2obd(mds->mds_osc_exp);
 259         struct lov_obd *lov = &lov_mds_obd->u.lov;
 260         __u32 ost_num = lov->desc.ld_tgt_count, mdt_num = 1;
 261         struct quota_adjust_qunit *oqaq = NULL;
 262         unsigned int qid[MAXQUOTAS] = { 0, 0 };
 263         struct lustre_quota_info *info = &mds->mds_quota_info;
 264         struct lustre_dquot *dquot = NULL;
 265         int adjust_res = 0;
 266         int rc = 0;
 267         ENTRY;
 268
 269         LASSERT(mds);
 270         dquot = lustre_dqget(obd, info, id, type);
 271         if (IS_ERR(dquot))
 272                 RETURN(PTR_ERR(dquot));
 273
 274         OBD_ALLOC_PTR(oqaq);
 275         if (!oqaq)
 276                 GOTO(out, rc = -ENOMEM);
 277
 278         down(&dquot->dq_sem);
 279         init_oqaq(oqaq, qctxt, id, type);
 280
 281         rc = dquot_create_oqaq(qctxt, dquot, ost_num, mdt_num,
 282                                is_blk ? LQUOTA_FLAGS_ADJBLK :
 283                                LQUOTA_FLAGS_ADJINO, oqaq);
 284
 285         if (rc < 0) {
 286                 CDEBUG(D_ERROR, "create oqaq failed! (rc:%d)\n", rc);
 287                 GOTO(out_sem, rc);
 288         }
 289         QAQ_DEBUG(oqaq, "show oqaq.\n")
 290
 291         if (!QAQ_IS_ADJBLK(oqaq) && !QAQ_IS_ADJINO(oqaq))
 292                 GOTO(out_sem, rc);
 293
 294         /* adjust the mds slave qunit size */
 295         adjust_res = quota_adjust_slave_lqs(oqaq, qctxt);
 296         if (adjust_res <= 0) {
 297                 if (adjust_res < 0) {
 298                         rc = adjust_res;
 299                         CDEBUG(D_ERROR, "adjust mds slave's qunit size failed! \
 300                                (rc:%d)\n", rc);
 301                 } else {
 302                         CDEBUG(D_QUOTA, "qunit doesn't need to be adjusted.\n");
 303                 }
 304                 GOTO(out_sem, rc);
 305         }
 306
 307         if (type)
 308                 qid[GRPQUOTA] = dquot->dq_id;
 309         else
 310                 qid[USRQUOTA] = dquot->dq_id;
 311
 312         up(&dquot->dq_sem);
 313
 314         rc = qctxt_adjust_qunit(obd, qctxt, qid, is_blk, 0, NULL);
 315         if (rc == -EDQUOT || rc == -EBUSY) {
 316                 CDEBUG(D_QUOTA, "rc: %d.\n", rc);
 317                 rc = 0;
 318         }
 319         if (rc) {
 320                 CDEBUG(D_ERROR, "mds fail to adjust file quota! \
 321                                (rc:%d)\n", rc);
 322                 GOTO(out, rc);
 323         }
 324
 325         /* only when block qunit is reduced, boardcast to osts */
 326         if ((adjust_res & LQS_BLK_DECREASE) && QAQ_IS_ADJBLK(oqaq))
 327                 rc = obd_quota_adjust_qunit(mds->mds_osc_exp, oqaq, qctxt);
 328
 329 out:
 330         lustre_dqput(dquot);
 331         if (oqaq)
 332                 OBD_FREE_PTR(oqaq);
 333
 334         RETURN(rc);
 335 out_sem:
 336         up(&dquot->dq_sem);
 337         goto out;
 338 }
 339
 340 int dqacq_handler(struct obd_device *obd, struct qunit_data *qdata, int opc)
 341 {
 342         struct mds_obd *mds = &obd->u.mds;
 343         struct lustre_quota_ctxt *qctxt = &mds->mds_obt.obt_qctxt;
 344         struct lustre_quota_info *info = &mds->mds_quota_info;
 345         struct lustre_dquot *dquot = NULL;
 346         __u64 *usage = NULL;
 347         __u64 hlimit = 0, slimit = 0;
 348         time_t *time = NULL;
 349         unsigned int grace = 0;
 350         struct lustre_qunit_size *lqs = NULL;
 351         int rc = 0;
 352         ENTRY;
 353
 354         if (OBD_FAIL_CHECK(OBD_FAIL_OBD_DQACQ))
 355                 RETURN(-EIO);
 356
 357         dquot = lustre_dqget(obd, info, qdata->qd_id, QDATA_IS_GRP(qdata));
 358         if (IS_ERR(dquot))
 359                 RETURN(PTR_ERR(dquot));
 360
 361         DQUOT_DEBUG(dquot, "get dquot in dqacq_handler\n");
 362         QINFO_DEBUG(dquot->dq_info, "get dquot in dqadq_handler\n");
 363
 364         down(&mds->mds_qonoff_sem);
 365         down(&dquot->dq_sem);
 366
 367         if (dquot->dq_status & DQ_STATUS_RECOVERY) {
 368                 DQUOT_DEBUG(dquot, "this dquot is under recovering.\n");
 369                 GOTO(out, rc = -EBUSY);
 370         }
 371
 372         if (QDATA_IS_BLK(qdata)) {
 373                 grace = info->qi_info[QDATA_IS_GRP(qdata)].dqi_bgrace;
 374                 usage = &dquot->dq_dqb.dqb_curspace;
 375                 hlimit = dquot->dq_dqb.dqb_bhardlimit;
 376                 slimit = dquot->dq_dqb.dqb_bsoftlimit;
 377                 time = &dquot->dq_dqb.dqb_btime;
 378         } else {
 379                 grace = info->qi_info[QDATA_IS_GRP(qdata)].dqi_igrace;
 380                 usage = (__u64 *) & dquot->dq_dqb.dqb_curinodes;
 381                 hlimit = dquot->dq_dqb.dqb_ihardlimit;
 382                 slimit = dquot->dq_dqb.dqb_isoftlimit;
 383                 time = &dquot->dq_dqb.dqb_itime;
 384         }
 385
 386         /* if the quota limit in admin quotafile is zero, we just inform
 387          * slave to clear quota limit with zero qd_count */
 388         if (hlimit == 0 && slimit == 0) {
 389                 qdata->qd_count = 0;
 390                 GOTO(out, rc);
 391         }
 392
 393         switch (opc) {
 394         case QUOTA_DQACQ:
 395                 if (hlimit &&
 396                     QUSG(*usage + qdata->qd_count, QDATA_IS_BLK(qdata)) > hlimit)
 397                 {
 398                         if (QDATA_IS_CHANGE_QS(qdata) &&
 399                             QUSG(*usage, QDATA_IS_BLK(qdata)) < hlimit)
 400                                 qdata->qd_count = (hlimit -
 401                                         QUSG(*usage, QDATA_IS_BLK(qdata)))
 402                                         * (QDATA_IS_BLK(qdata) ?
 403                                            QUOTABLOCK_SIZE : 1);
 404                         else
 405                                 GOTO(out, rc = -EDQUOT);
 406                 }
 407
 408                 if (slimit &&
 409                     QUSG(*usage + qdata->qd_count, QDATA_IS_BLK(qdata)) > slimit) {
 410                         if (*time && cfs_time_current_sec() >= *time)
 411                                 GOTO(out, rc = -EDQUOT);
 412                         else if (!*time)
 413                                 *time = cfs_time_current_sec() + grace;
 414                 }
 415
 416                 *usage += qdata->qd_count;
 417                 break;
 418         case QUOTA_DQREL:
 419                 /* The usage in administrative file might be incorrect before
 420                  * recovery done */
 421                 if (*usage - qdata->qd_count < 0)
 422                         *usage = 0;
 423                 else
 424                         *usage -= qdata->qd_count;
 425
 426                 /* (usage <= soft limit) but not (usage < soft limit) */
 427                 if (!slimit || QUSG(*usage, QDATA_IS_BLK(qdata)) <= slimit)
 428                         *time = 0;
 429                 break;
 430         default:
 431                 LBUG();
 432         }
 433
 434         rc = fsfilt_dquot(obd, dquot, QFILE_WR_DQUOT);
 435         EXIT;
 436 out:
 437         up(&dquot->dq_sem);
 438         up(&mds->mds_qonoff_sem);
 439         lustre_dqput(dquot);
 440         if (rc != -EDQUOT)
 441                 dqacq_adjust_qunit_sz(obd, qdata->qd_id, QDATA_IS_GRP(qdata),
 442                                       QDATA_IS_BLK(qdata));
 443
 444         quota_search_lqs(qdata, NULL, qctxt, &lqs);
 445         if (QDATA_IS_BLK(qdata)) {
 446                 if (!lqs) {
 447                         CDEBUG(D_INFO, "Can't find the lustre qunit size!\n");
 448                         qdata->qd_qunit  = qctxt->lqc_bunit_sz;
 449                 } else {
 450                         spin_lock(&lqs->lqs_lock);
 451                         qdata->qd_qunit  = lqs->lqs_bunit_sz;
 452                         spin_unlock(&lqs->lqs_lock);
 453                 }
 454                 QDATA_SET_ADJBLK(qdata);
 455         } else {
 456                 if (!lqs) {
 457                         CDEBUG(D_INFO, "Can't find the lustre qunit size!\n");
 458                         qdata->qd_qunit  = qctxt->lqc_iunit_sz;
 459                 } else {
 460                         spin_lock(&lqs->lqs_lock);
 461                         qdata->qd_qunit  = lqs->lqs_iunit_sz;
 462                         spin_unlock(&lqs->lqs_lock);
 463                 }
 464                 QDATA_SET_ADJINO(qdata);
 465         }
 466
 467         QDATA_DEBUG(qdata, "alloc/release qunit in dqacq_handler\n");
 468         if (lqs)
 469                 lqs_putref(lqs);
 470
 471         return rc;
 472 }
 473
 474 int mds_quota_adjust(struct obd_device *obd, const unsigned int qcids[],
 475                      const unsigned int qpids[], int rc, int opc)
 476 {
 477         struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
 478         int rc2 = 0;
 479         ENTRY;
 480
 481         if (rc && rc != -EDQUOT && rc != ENOLCK)
 482                 RETURN(0);
 483
 484         switch (opc) {
 485         case FSFILT_OP_SETATTR:
 486                 /* release file quota on original owner */
 487                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids, 0, 0, NULL);
 488                 /* release block quota on original owner */
 489                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids, 1, 0, NULL);
 490                 /* acquire file quota on current owner */
 491                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids, 0, 0, NULL);
 492                 /* acquire block quota on current owner */
 493                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids, 1, 0, NULL);
 494                 break;
 495         case FSFILT_OP_UNLINK_PARTIAL_CHILD:
 496                 /* release file quota on child */
 497                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids, 0, 0, NULL);
 498                 /* rlease block quota on child */
 499                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids, 1, 0, NULL);
 500                 break;
 501         case FSFILT_OP_CREATE_PARTIAL_CHILD:
 502                 /* acquire file quota on child */
 503                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids, 0, 0, NULL);
 504                 /* acquire block quota on child */
 505                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids, 1, 0, NULL);
 506                 break;
 507         case FSFILT_OP_LINK:
 508                 /* acquire block quota on parent */
 509                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids, 1, 0, NULL);
 510                 break;
 511         case FSFILT_OP_UNLINK:
 512                 /* release block quota on parent */
 513                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids, 1, 0, NULL);
 514                 /* release file quota on child */
 515                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids, 0, 0, NULL);
 516                 if (qpids[0] != qcids[0] || qpids[1] != qcids[1])
 517                         /* release block quota on child */
 518                         rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids, 1, 0,
 519                                                   NULL);
 520                 break;
 521         case FSFILT_OP_UNLINK_PARTIAL_PARENT:
 522                 /* release block quota on parent */
 523                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids, 1, 0, NULL);
 524                 break;
 525         case FSFILT_OP_CREATE:
 526                 /* acquire block quota on parent */
 527                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids, 1, 0, NULL);
 528                 /* acquire file quota on child */
 529                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids, 0, 0, NULL);
 530                 if (qpids[0] != qcids[0] || qpids[1] != qcids[1])
 531                         /* acquire block quota on child */
 532                         rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids, 1, 0,
 533                                                   NULL);
 534                 break;
 535         default:
 536                 LBUG();
 537                 break;
 538         }
 539
 540         if (rc2)
 541                 CDEBUG(rc2 == QUOTA_REQ_RETURNED ? D_QUOTA: D_ERROR,
 542                        "mds adjust qunit %ssuccessfully! (opc:%d rc:%d)\n",
 543                        rc2 == QUOTA_REQ_RETURNED ? "" : "un", opc, rc2);
 544         RETURN(0);
 545 }
 546
 547 int filter_quota_adjust(struct obd_device *obd, const unsigned int qcids[],
 548                         const unsigned int qpids[], int rc, int opc)
 549 {
 550         struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
 551         int rc2 = 0;
 552         ENTRY;
 553
 554         if (rc && rc != -EDQUOT)
 555                 RETURN(0);
 556
 557         switch (opc) {
 558         case FSFILT_OP_SETATTR:
 559                 /* acquire/release block quota on original & current owner */
 560                 rc = qctxt_adjust_qunit(obd, qctxt, qcids, 1, 0, NULL);
 561                 rc2 = qctxt_adjust_qunit(obd, qctxt, qpids, 1, 0, NULL);
 562                 break;
 563         case FSFILT_OP_UNLINK:
 564                 /* release block quota on this owner */
 565         case FSFILT_OP_CREATE: /* XXX for write operation on obdfilter */
 566                 /* acquire block quota on this owner */
 567                 rc = qctxt_adjust_qunit(obd, qctxt, qcids, 1, 0, NULL);
 568                 break;
 569         default:
 570                 LBUG();
 571                 break;
 572         }
 573
 574         if (rc || rc2) {
 575                 if (!rc)
 576                         rc = rc2;
 577                 CDEBUG(rc == QUOTA_REQ_RETURNED ? D_QUOTA: D_ERROR,
 578                        "filter adjust qunit %ssuccessfully! (opc:%d rc%d)\n",
 579                        QUOTA_REQ_RETURNED ? "" : "un", opc, rc);
 580         }
 581
 582         RETURN(0);
 583 }
 584
 585 static const char prefix[] = "OBJECTS/";
 586
 587 int mds_quota_invalidate(struct obd_device *obd, struct obd_quotactl *oqctl)
 588 {
 589         struct mds_obd *mds = &obd->u.mds;
 590         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
 591         int rc = 0, i;
 592         char *quotafile[] = LUSTRE_ADMIN_QUOTAFILES_V2;
 593         char name[64];
 594         struct lvfs_run_ctxt saved;
 595
 596         LASSERT(qinfo->qi_version == LUSTRE_QUOTA_V2);
 597
 598         if (oqctl->qc_type != USRQUOTA &&
 599             oqctl->qc_type != GRPQUOTA &&
 600             oqctl->qc_type != UGQUOTA)
 601                 return -EINVAL;
 602
 603         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 604
 605         down(&mds->mds_qonoff_sem);
 606
 607         for (i = 0; i < MAXQUOTAS; i++) {
 608                 struct file *fp;
 609
 610                 if (!Q_TYPESET(oqctl, i))
 611                         continue;
 612
 613                 /* quota file has been opened ? */
 614                 if (qinfo->qi_files[i]) {
 615                         rc = -EBUSY;
 616                         goto out;
 617                 }
 618
 619                 LASSERT(strlen(quotafile[i]) + sizeof(prefix) <= sizeof(name));
 620                 sprintf(name, "%s%s", prefix, quotafile[i]);
 621
 622                 fp = filp_open(name, O_CREAT | O_TRUNC | O_RDWR, 0644);
 623                 if (IS_ERR(fp)) {
 624                         rc = PTR_ERR(fp);
 625                         CERROR("error invalidating admin quotafile %s (rc:%d)\n",
 626                                name, rc);
 627                 }
 628                 else
 629                         filp_close(fp, 0);
 630         }
 631
 632 out:
 633         up(&mds->mds_qonoff_sem);
 634
 635         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 636
 637         return rc;
 638 }
 639
 640 int mds_quota_finvalidate(struct obd_device *obd, struct obd_quotactl *oqctl)
 641 {
 642         struct mds_obd *mds = &obd->u.mds;
 643         int rc;
 644         struct lvfs_run_ctxt saved;
 645
 646         if (oqctl->qc_type != USRQUOTA &&
 647             oqctl->qc_type != GRPQUOTA &&
 648             oqctl->qc_type != UGQUOTA)
 649                 RETURN(-EINVAL);
 650
 651         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 652         down(&mds->mds_qonoff_sem);
 653
 654         oqctl->qc_cmd = Q_FINVALIDATE;
 655         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 656         if (!rc)
 657                 rc = obd_quotactl(mds->mds_osc_exp, oqctl);
 658
 659         up(&mds->mds_qonoff_sem);
 660         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 661
 662         return rc;
 663 }
 664
 665 int init_admin_quotafiles(struct obd_device *obd, struct obd_quotactl *oqctl)
 666 {
 667         struct mds_obd *mds = &obd->u.mds;
 668         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
 669         const char *quotafile[] = LUSTRE_ADMIN_QUOTAFILES_V2;
 670         struct lvfs_run_ctxt saved;
 671         char name[64];
 672         int i, rc = 0;
 673         ENTRY;
 674
 675         LASSERT(qinfo->qi_version == LUSTRE_QUOTA_V2);
 676
 677         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 678
 679         down(&mds->mds_qonoff_sem);
 680
 681         for (i = 0; i < MAXQUOTAS && !rc; i++) {
 682                 struct file *fp;
 683
 684                 if (!Q_TYPESET(oqctl, i))
 685                         continue;
 686
 687                 /* quota file has been opened ? */
 688                 if (qinfo->qi_files[i]) {
 689                         CWARN("init %s admin quotafile while quota on.\n",
 690                               i == USRQUOTA ? "user" : "group");
 691                         continue;
 692                 }
 693
 694                 LASSERT(strlen(quotafile[i]) + sizeof(prefix) <= sizeof(name));
 695                 sprintf(name, "%s%s", prefix, quotafile[i]);
 696
 697                 /* check if quota file exists and is correct */
 698                 fp = filp_open(name, O_RDONLY, 0);
 699                 if (!IS_ERR(fp)) {
 700                         /* irregular file is not the right place for quota */
 701                         if (!S_ISREG(fp->f_dentry->d_inode->i_mode)) {
 702                                 CERROR("admin quota file %s is not "
 703                                        "regular!", name);
 704                                 filp_close(fp, 0);
 705                                 rc = -EINVAL;
 706                                 break;
 707                         }
 708                         qinfo->qi_files[i] = fp;
 709                         rc = fsfilt_quotainfo(obd, qinfo, i, QFILE_CHK);
 710                         qinfo->qi_files[i] = 0;
 711                         filp_close(fp, 0);
 712                 }
 713                 else
 714                         rc = PTR_ERR(fp);
 715
 716                 if (!rc)
 717                         continue;
 718
 719                 /* -EINVAL may be returned by quotainfo for bad quota file */
 720                 if (rc != -ENOENT && rc != -EINVAL) {
 721                         CERROR("error opening old quota file %s (%d)\n",
 722                                name, rc);
 723                         break;
 724                 }
 725
 726                 CDEBUG(D_INFO, "%s new quota file %s\n", name,
 727                        rc == -ENOENT ? "creating" : "overwriting");
 728
 729                 /* create quota file overwriting old if needed */
 730                 fp = filp_open(name, O_CREAT | O_TRUNC | O_RDWR, 0644);
 731                 if (IS_ERR(fp)) {
 732                         rc = PTR_ERR(fp);
 733                         CERROR("error creating admin quotafile %s (rc:%d)\n",
 734                                name, rc);
 735                         break;
 736                 }
 737
 738                 qinfo->qi_files[i] = fp;
 739
 740                 rc = fsfilt_quotainfo(obd, qinfo, i, QFILE_INIT_INFO);
 741                 if (rc)
 742                         CERROR("error init %s admin quotafile! (rc:%d)\n",
 743                                i == USRQUOTA ? "user" : "group", rc);
 744
 745                 filp_close(fp, 0);
 746                 qinfo->qi_files[i] = NULL;
 747         }
 748         up(&mds->mds_qonoff_sem);
 749
 750         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 751         RETURN(rc);
 752 }
 753
 754 static int close_quota_files(struct obd_quotactl *oqctl,
 755                              struct lustre_quota_info *qinfo)
 756 {
 757         int i, rc = 0;
 758         ENTRY;
 759
 760         for (i = 0; i < MAXQUOTAS; i++) {
 761                 if (!Q_TYPESET(oqctl, i))
 762                         continue;
 763                 if (qinfo->qi_files[i] == NULL) {
 764                         rc = -ESRCH;
 765                         continue;
 766                 }
 767                 filp_close(qinfo->qi_files[i], 0);
 768                 qinfo->qi_files[i] = NULL;
 769         }
 770         RETURN(rc);
 771 }
 772
 773 int mds_admin_quota_on(struct obd_device *obd, struct obd_quotactl *oqctl)
 774 {
 775         struct mds_obd *mds = &obd->u.mds;
 776         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
 777         const char *quotafile[] = LUSTRE_ADMIN_QUOTAFILES_V2;
 778         char name[64];
 779         int i, rc = 0;
 780         ENTRY;
 781
 782         LASSERT(qinfo->qi_version == LUSTRE_QUOTA_V2);
 783
 784         /* open admin quota files and read quotafile info */
 785         for (i = 0; i < MAXQUOTAS; i++) {
 786                 struct file *fp;
 787
 788                 if (!Q_TYPESET(oqctl, i))
 789                         continue;
 790
 791                 LASSERT(strlen(quotafile[i])
 792                         + sizeof(prefix) <= sizeof(name));
 793                 sprintf(name, "%s%s", prefix, quotafile[i]);
 794
 795                 if (qinfo->qi_files[i] != NULL) {
 796                         rc = -EBUSY;
 797                         break;
 798                 }
 799
 800                 fp = filp_open(name, O_RDWR, 0);
 801                 if (IS_ERR(fp) || !S_ISREG(fp->f_dentry->d_inode->i_mode)) {
 802                         rc = IS_ERR(fp) ? PTR_ERR(fp) : -EINVAL;
 803                         CERROR("error open/create %s! (rc:%d)\n", name, rc);
 804                         break;
 805                 }
 806                 qinfo->qi_files[i] = fp;
 807
 808                 rc = fsfilt_quotainfo(obd, qinfo, i, QFILE_CHK);
 809                 if (rc) {
 810                         CERROR("invalid quota file %s! (rc:%d)\n", name, rc);
 811                         break;
 812                 }
 813
 814                 rc = fsfilt_quotainfo(obd, qinfo, i, QFILE_RD_INFO);
 815                 if (rc) {
 816                         CERROR("error read quotainfo of %s! (rc:%d)\n", name,
 817                                rc);
 818                         break;
 819                 }
 820         }
 821
 822         if (rc && rc != -EBUSY)
 823                 close_quota_files(oqctl, qinfo);
 824
 825         RETURN(rc);
 826 }
 827
 828 int mds_admin_quota_off(struct obd_device *obd,
 829                         struct obd_quotactl *oqctl)
 830 {
 831         struct mds_obd *mds = &obd->u.mds;
 832         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
 833         int rc;
 834         ENTRY;
 835
 836         /* close admin quota files */
 837         rc = close_quota_files(oqctl, qinfo);
 838         RETURN(rc);
 839 }
 840
 841 int mds_quota_on(struct obd_device *obd, struct obd_quotactl *oqctl)
 842 {
 843         struct mds_obd *mds = &obd->u.mds;
 844         struct obd_device_target *obt = &obd->u.obt;
 845         struct lvfs_run_ctxt saved;
 846         int rc;
 847         ENTRY;
 848
 849         if (oqctl->qc_type != USRQUOTA &&
 850             oqctl->qc_type != GRPQUOTA &&
 851             oqctl->qc_type != UGQUOTA)
 852                 RETURN(-EINVAL);
 853
 854         if (!atomic_dec_and_test(&obt->obt_quotachecking)) {
 855                 CDEBUG(D_INFO, "other people are doing quotacheck\n");
 856                 atomic_inc(&obt->obt_quotachecking);
 857                 RETURN(-EBUSY);
 858         }
 859
 860         LASSERT(!obt->obt_qctxt.lqc_immutable);
 861         down(&mds->mds_qonoff_sem);
 862         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 863         rc = mds_admin_quota_on(obd, oqctl);
 864         if (rc)
 865                 GOTO(out, rc);
 866
 867         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 868         if (!rc)
 869                 obt->obt_qctxt.lqc_flags |= UGQUOTA2LQC(oqctl->qc_type);
 870         else
 871                 GOTO(out, rc);
 872
 873         rc = obd_quotactl(mds->mds_osc_exp, oqctl);
 874
 875 out:
 876         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 877         up(&mds->mds_qonoff_sem);
 878         atomic_inc(&obt->obt_quotachecking);
 879         RETURN(rc);
 880 }
 881
 882 int mds_quota_off(struct obd_device *obd, struct obd_quotactl *oqctl)
 883 {
 884         struct mds_obd *mds = &obd->u.mds;
 885         struct obd_device_target *obt = &obd->u.obt;
 886         struct lvfs_run_ctxt saved;
 887         int rc, rc2, imm;
 888         ENTRY;
 889
 890         imm = oqctl->qc_type & IMMQUOTA;
 891         oqctl->qc_type &= ~IMMQUOTA;
 892
 893         if (oqctl->qc_type != USRQUOTA &&
 894             oqctl->qc_type != GRPQUOTA &&
 895             oqctl->qc_type != UGQUOTA)
 896                 RETURN(-EINVAL);
 897
 898         if (!atomic_dec_and_test(&obt->obt_quotachecking)) {
 899                 CDEBUG(D_INFO, "other people are doing quotacheck\n");
 900                 atomic_inc(&obt->obt_quotachecking);
 901                 RETURN(-EBUSY);
 902         }
 903
 904         down(&mds->mds_qonoff_sem);
 905         /* close admin quota files */
 906         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 907         mds_admin_quota_off(obd, oqctl);
 908
 909         rc = obd_quotactl(mds->mds_osc_exp, oqctl);
 910         rc2 = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 911         if (!rc2) {
 912                 if (imm)
 913                         obt->obt_qctxt.lqc_immutable = 1;
 914                 obt->obt_qctxt.lqc_flags &= ~UGQUOTA2LQC(oqctl->qc_type);
 915         }
 916         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 917         up(&mds->mds_qonoff_sem);
 918         atomic_inc(&obt->obt_quotachecking);
 919
 920         RETURN(rc ?: rc2);
 921 }
 922
 923 int mds_set_dqinfo(struct obd_device *obd, struct obd_quotactl *oqctl)
 924 {
 925         struct mds_obd *mds = &obd->u.mds;
 926         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
 927         struct obd_dqinfo *dqinfo = &oqctl->qc_dqinfo;
 928         int rc;
 929         ENTRY;
 930
 931         if (oqctl->qc_type != USRQUOTA &&
 932             oqctl->qc_type != GRPQUOTA)
 933                 RETURN(-EINVAL);
 934
 935         down(&mds->mds_qonoff_sem);
 936         if (qinfo->qi_files[oqctl->qc_type] == NULL) {
 937                 rc = -ESRCH;
 938                 goto out;
 939         }
 940
 941         qinfo->qi_info[oqctl->qc_type].dqi_bgrace = dqinfo->dqi_bgrace;
 942         qinfo->qi_info[oqctl->qc_type].dqi_igrace = dqinfo->dqi_igrace;
 943         qinfo->qi_info[oqctl->qc_type].dqi_flags = dqinfo->dqi_flags;
 944
 945         rc = fsfilt_quotainfo(obd, qinfo, oqctl->qc_type, QFILE_WR_INFO);
 946
 947 out:
 948         up(&mds->mds_qonoff_sem);
 949         RETURN(rc);
 950 }
 951
 952 int mds_get_dqinfo(struct obd_device *obd, struct obd_quotactl *oqctl)
 953 {
 954         struct mds_obd *mds = &obd->u.mds;
 955         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
 956         struct obd_dqinfo *dqinfo = &oqctl->qc_dqinfo;
 957         int rc = 0;
 958         ENTRY;
 959
 960         if (oqctl->qc_type != USRQUOTA &&
 961             oqctl->qc_type != GRPQUOTA)
 962                 RETURN(-EINVAL);
 963
 964         down(&mds->mds_qonoff_sem);
 965         if (qinfo->qi_files[oqctl->qc_type] == NULL) {
 966                 rc = -ESRCH;
 967                 goto out;
 968         }
 969
 970         dqinfo->dqi_bgrace = qinfo->qi_info[oqctl->qc_type].dqi_bgrace;
 971         dqinfo->dqi_igrace = qinfo->qi_info[oqctl->qc_type].dqi_igrace;
 972         dqinfo->dqi_flags = qinfo->qi_info[oqctl->qc_type].dqi_flags;
 973
 974 out:
 975         up(&mds->mds_qonoff_sem);
 976         RETURN(rc);
 977 }
 978
 979 int dquot_create_oqaq(struct lustre_quota_ctxt *qctxt,
 980                       struct lustre_dquot *dquot, __u32 ost_num, __u32 mdt_num,
 981                       int type, struct quota_adjust_qunit *oqaq)
 982 {
 983         __u64 bunit_curr_o, iunit_curr_o;
 984         unsigned long shrink_qunit_limit = qctxt->lqc_cqs_boundary_factor;
 985         unsigned long cqs_factor = qctxt->lqc_cqs_qs_factor;
 986         __u64 blimit = dquot->dq_dqb.dqb_bhardlimit ?
 987                 dquot->dq_dqb.dqb_bhardlimit : dquot->dq_dqb.dqb_bsoftlimit;
 988         __u64 ilimit = dquot->dq_dqb.dqb_ihardlimit ?
 989                 dquot->dq_dqb.dqb_ihardlimit : dquot->dq_dqb.dqb_isoftlimit;
 990         int rc = 0;
 991         ENTRY;
 992
 993         if (!dquot || !oqaq)
 994                 RETURN(-EINVAL);
 995         LASSERT_SEM_LOCKED(&dquot->dq_sem);
 996         LASSERT(oqaq->qaq_iunit_sz);
 997         LASSERT(oqaq->qaq_bunit_sz);
 998
 999         /* don't change qunit size */
1000         if (!qctxt->lqc_switch_qs)
1001                 RETURN(rc);
1002
1003         bunit_curr_o = oqaq->qaq_bunit_sz;
1004         iunit_curr_o = oqaq->qaq_iunit_sz;
1005
1006         if (dquot->dq_type == GRPQUOTA)
1007                 QAQ_SET_GRP(oqaq);
1008
1009         if ((type & LQUOTA_FLAGS_ADJBLK) && blimit) {
1010                 __u64 b_limitation =
1011                         oqaq->qaq_bunit_sz * (ost_num + 1) * shrink_qunit_limit;
1012                 /* enlarge block qunit size */
1013                 while (blimit >
1014                        QUSG(dquot->dq_dqb.dqb_curspace + 2 * b_limitation, 1)) {
1015                         oqaq->qaq_bunit_sz =
1016                                 QUSG(oqaq->qaq_bunit_sz * cqs_factor, 1)
1017                                 << QUOTABLOCK_BITS;
1018                         b_limitation = oqaq->qaq_bunit_sz * (ost_num + 1) *
1019                                 shrink_qunit_limit;
1020                 }
1021
1022                 if (oqaq->qaq_bunit_sz > qctxt->lqc_bunit_sz)
1023                         oqaq->qaq_bunit_sz = qctxt->lqc_bunit_sz;
1024
1025                 /* shrink block qunit size */
1026                 while (blimit <
1027                        QUSG(dquot->dq_dqb.dqb_curspace + b_limitation, 1)) {
1028                         do_div(oqaq->qaq_bunit_sz , cqs_factor);
1029                         oqaq->qaq_bunit_sz = QUSG(oqaq->qaq_bunit_sz, 1) <<
1030                                 QUOTABLOCK_BITS;
1031                         b_limitation = oqaq->qaq_bunit_sz * (ost_num + 1) *
1032                                 shrink_qunit_limit;
1033                         if (oqaq->qaq_bunit_sz <  qctxt->lqc_cqs_least_bunit)
1034                                 break;
1035                 }
1036
1037                 if (oqaq->qaq_bunit_sz < qctxt->lqc_cqs_least_bunit)
1038                         oqaq->qaq_bunit_sz = qctxt->lqc_cqs_least_bunit;
1039
1040                 if (bunit_curr_o != oqaq->qaq_bunit_sz)
1041                         QAQ_SET_ADJBLK(oqaq);
1042
1043         }
1044
1045         if ((type & LQUOTA_FLAGS_ADJINO) && ilimit) {
1046                 __u64 i_limitation =
1047                         oqaq->qaq_iunit_sz * mdt_num * shrink_qunit_limit;
1048                 /* enlarge file qunit size */
1049                 while (ilimit > dquot->dq_dqb.dqb_curinodes
1050                        + 2 * i_limitation) {
1051                         oqaq->qaq_iunit_sz = oqaq->qaq_iunit_sz * cqs_factor;
1052                         i_limitation = oqaq->qaq_iunit_sz * mdt_num *
1053                                 shrink_qunit_limit;
1054                 }
1055
1056                 if (oqaq->qaq_iunit_sz > qctxt->lqc_iunit_sz)
1057                         oqaq->qaq_iunit_sz = qctxt->lqc_iunit_sz;
1058
1059                 /* shrink file qunit size */
1060                 while (ilimit < dquot->dq_dqb.dqb_curinodes
1061                        + i_limitation) {
1062                         do_div(oqaq->qaq_iunit_sz, cqs_factor);
1063                         i_limitation = oqaq->qaq_iunit_sz * mdt_num *
1064                                        shrink_qunit_limit;
1065                         if (oqaq->qaq_iunit_sz < qctxt->lqc_cqs_least_iunit)
1066                                 break;
1067                 }
1068
1069                 if (oqaq->qaq_iunit_sz < qctxt->lqc_cqs_least_iunit)
1070                         oqaq->qaq_iunit_sz = qctxt->lqc_cqs_least_iunit;
1071
1072                 if (iunit_curr_o != oqaq->qaq_iunit_sz)
1073                         QAQ_SET_ADJINO(oqaq);
1074
1075         }
1076
1077         if (!dquot->dq_dqb.dqb_bhardlimit && !dquot->dq_dqb.dqb_bsoftlimit &&
1078             !dquot->dq_dqb.dqb_ihardlimit && !dquot->dq_dqb.dqb_isoftlimit) {
1079                 oqaq->qaq_bunit_sz = 0;
1080                 oqaq->qaq_iunit_sz = 0;
1081                 QAQ_SET_ADJBLK(oqaq);
1082                 QAQ_SET_ADJINO(oqaq);
1083         }
1084
1085         QAQ_DEBUG(oqaq, "the oqaq computed\n");
1086
1087         RETURN(rc);
1088 }
1089
1090 static int mds_init_slave_ilimits(struct obd_device *obd,
1091                                   struct obd_quotactl *oqctl, int set,
1092                                   struct quota_adjust_qunit *oqaq)
1093 {
1094         /* XXX: for file limits only adjust local now */
1095         struct obd_device_target *obt = &obd->u.obt;
1096         struct lustre_quota_ctxt *qctxt = &obt->obt_qctxt;
1097         unsigned int id[MAXQUOTAS] = { 0, 0 };
1098         struct obd_quotactl *ioqc = NULL;
1099         int flag;
1100         int rc;
1101         ENTRY;
1102
1103         /* if we are going to set zero limit, needn't init slaves */
1104         if (!oqctl->qc_dqblk.dqb_ihardlimit && !oqctl->qc_dqblk.dqb_isoftlimit &&
1105             !set)
1106                 RETURN(0);
1107
1108         OBD_ALLOC_PTR(ioqc);
1109         if (!ioqc)
1110                 RETURN(-ENOMEM);
1111
1112         flag = oqctl->qc_dqblk.dqb_ihardlimit ||
1113                oqctl->qc_dqblk.dqb_isoftlimit || !set;
1114         ioqc->qc_cmd = flag ? Q_INITQUOTA : Q_SETQUOTA;
1115         ioqc->qc_id = oqctl->qc_id;
1116         ioqc->qc_type = oqctl->qc_type;
1117         ioqc->qc_dqblk.dqb_valid = QIF_ILIMITS;
1118         ioqc->qc_dqblk.dqb_ihardlimit = flag ? MIN_QLIMIT : 0;
1119
1120         if (QAQ_IS_ADJINO(oqaq)) {
1121                 /* adjust the mds slave's inode qunit size */
1122                 rc = quota_adjust_slave_lqs(oqaq, qctxt);
1123                 if (rc < 0)
1124                         CDEBUG(D_ERROR, "adjust mds slave's inode qunit size \
1125                                failed! (rc:%d)\n", rc);
1126         }
1127
1128         /* set local limit to MIN_QLIMIT */
1129         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, ioqc);
1130         if (rc)
1131                 GOTO(out, rc);
1132
1133         /* trigger local qunit pre-acquire */
1134         if (oqctl->qc_type == USRQUOTA)
1135                 id[USRQUOTA] = oqctl->qc_id;
1136         else
1137                 id[GRPQUOTA] = oqctl->qc_id;
1138
1139         rc = qctxt_adjust_qunit(obd, &obd->u.obt.obt_qctxt, id, 0, 0, NULL);
1140         if (rc == -EDQUOT || rc == -EBUSY) {
1141                 CDEBUG(D_QUOTA, "rc: %d.\n", rc);
1142                 rc = 0;
1143         }
1144         if (rc) {
1145                 CDEBUG(D_QUOTA,"error mds adjust local file quota! (rc:%d)\n",
1146                        rc);
1147                 GOTO(out, rc);
1148         }
1149         /* FIXME initialize all slaves in CMD */
1150         EXIT;
1151 out:
1152         if (ioqc)
1153                 OBD_FREE_PTR(ioqc);
1154         return rc;
1155 }
1156
1157 static int mds_init_slave_blimits(struct obd_device *obd,
1158                                   struct obd_quotactl *oqctl, int set,
1159                                   struct quota_adjust_qunit *oqaq)
1160 {
1161         struct obd_device_target *obt = &obd->u.obt;
1162         struct lustre_quota_ctxt *qctxt = &obt->obt_qctxt;
1163         struct mds_obd *mds = &obd->u.mds;
1164         struct obd_quotactl *ioqc;
1165         unsigned int id[MAXQUOTAS] = { 0, 0 };
1166         int rc, rc1 = 0;
1167         int flag;
1168         ENTRY;
1169
1170         /* if we are going to set zero limit, needn't init slaves */
1171         if (!oqctl->qc_dqblk.dqb_bhardlimit && !oqctl->qc_dqblk.dqb_bsoftlimit &&
1172             !set)
1173                 RETURN(0);
1174
1175         OBD_ALLOC_PTR(ioqc);
1176         if (!ioqc)
1177                 RETURN(-ENOMEM);
1178
1179         flag = oqctl->qc_dqblk.dqb_bhardlimit ||
1180                oqctl->qc_dqblk.dqb_bsoftlimit || !set;
1181         ioqc->qc_cmd = flag ? Q_INITQUOTA : Q_SETQUOTA;
1182         ioqc->qc_id = oqctl->qc_id;
1183         ioqc->qc_type = oqctl->qc_type;
1184         ioqc->qc_dqblk.dqb_valid = QIF_BLIMITS;
1185         ioqc->qc_dqblk.dqb_bhardlimit = flag ? MIN_QLIMIT : 0;
1186         if (QAQ_IS_ADJBLK(oqaq)) {
1187                 /* adjust the mds slave's block qunit size */
1188                 rc1 = quota_adjust_slave_lqs(oqaq, qctxt);
1189                 if (rc1 < 0)
1190                         CERROR("adjust mds slave's block qunit size failed!"
1191                                "(rc:%d)\n", rc1);
1192         }
1193
1194         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, ioqc);
1195         if (rc)
1196                 GOTO(out, rc);
1197
1198         /* trigger local qunit pre-acquire */
1199         if (oqctl->qc_type == USRQUOTA)
1200                 id[USRQUOTA] = oqctl->qc_id;
1201         else
1202                 id[GRPQUOTA] = oqctl->qc_id;
1203
1204         /* initialize all slave's limit */
1205         rc = obd_quotactl(mds->mds_osc_exp, ioqc);
1206
1207         rc = qctxt_adjust_qunit(obd, &obd->u.obt.obt_qctxt, id, 1, 0, NULL);
1208         if (rc == -EDQUOT || rc == -EBUSY) {
1209                 CDEBUG(D_QUOTA, "rc: %d.\n", rc);
1210                 rc = 0;
1211         }
1212         if (rc) {
1213                 CERROR("error mds adjust local block quota! (rc:%d)\n", rc);
1214                 GOTO(out, rc);
1215         }
1216
1217         /* adjust all slave's qunit size when setting quota
1218          * this is will create a lqs for every ost, which will present
1219          * certain uid/gid is set quota or not */
1220         QAQ_SET_ADJBLK(oqaq);
1221         rc = obd_quota_adjust_qunit(mds->mds_osc_exp, oqaq, qctxt);
1222
1223         EXIT;
1224 out:
1225         OBD_FREE_PTR(ioqc);
1226         return rc;
1227 }
1228
1229 int mds_set_dqblk(struct obd_device *obd, struct obd_quotactl *oqctl)
1230 {
1231         struct mds_obd *mds = &obd->u.mds;
1232         struct lustre_quota_ctxt *qctxt = &mds->mds_obt.obt_qctxt;
1233         struct obd_device *lov_obd = class_exp2obd(mds->mds_osc_exp);
1234         struct lov_obd *lov = &lov_obd->u.lov;
1235         struct quota_adjust_qunit *oqaq = NULL;
1236         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
1237         __u64 ihardlimit, isoftlimit, bhardlimit, bsoftlimit;
1238         time_t btime, itime;
1239         struct lustre_dquot *dquot;
1240         struct obd_dqblk *dqblk = &oqctl->qc_dqblk;
1241         /* orig_set means if quota was set before; now_set means we are
1242          * setting/cancelling quota */
1243         int orig_set, now_set;
1244         int rc, rc2 = 0, flag = 0;
1245         ENTRY;
1246
1247         if (oqctl->qc_type != USRQUOTA &&
1248             oqctl->qc_type != GRPQUOTA)
1249                 RETURN(-EINVAL);
1250
1251         OBD_ALLOC_PTR(oqaq);
1252         if (!oqaq)
1253                 RETURN(-ENOMEM);
1254         down(&mds->mds_qonoff_sem);
1255         init_oqaq(oqaq, qctxt, oqctl->qc_id, oqctl->qc_type);
1256
1257         if (qinfo->qi_files[oqctl->qc_type] == NULL)
1258                 GOTO(out_sem, rc = -ESRCH);
1259
1260         dquot = lustre_dqget(obd, qinfo, oqctl->qc_id, oqctl->qc_type);
1261         if (IS_ERR(dquot))
1262                 GOTO(out_sem, rc = PTR_ERR(dquot));
1263         DQUOT_DEBUG(dquot, "get dquot in mds_set_blk\n");
1264         QINFO_DEBUG(dquot->dq_info, "get dquot in mds_set_blk\n");
1265
1266         down(&dquot->dq_sem);
1267
1268         if (dquot->dq_status) {
1269                 up(&dquot->dq_sem);
1270                 lustre_dqput(dquot);
1271                 GOTO(out_sem, rc = -EBUSY);
1272         }
1273         dquot->dq_status |= DQ_STATUS_SET;
1274
1275         ihardlimit = dquot->dq_dqb.dqb_ihardlimit;
1276         isoftlimit = dquot->dq_dqb.dqb_isoftlimit;
1277         bhardlimit = dquot->dq_dqb.dqb_bhardlimit;
1278         bsoftlimit = dquot->dq_dqb.dqb_bsoftlimit;
1279         btime = dquot->dq_dqb.dqb_btime;
1280         itime = dquot->dq_dqb.dqb_itime;
1281
1282         if (dqblk->dqb_valid & QIF_BTIME)
1283                 dquot->dq_dqb.dqb_btime = dqblk->dqb_btime;
1284         if (dqblk->dqb_valid & QIF_ITIME)
1285                 dquot->dq_dqb.dqb_itime = dqblk->dqb_itime;
1286
1287         if (dqblk->dqb_valid & QIF_BLIMITS) {
1288                 dquot->dq_dqb.dqb_bhardlimit = dqblk->dqb_bhardlimit;
1289                 dquot->dq_dqb.dqb_bsoftlimit = dqblk->dqb_bsoftlimit;
1290                 /* clear usage (limit pool) */
1291                 if (!dquot->dq_dqb.dqb_bhardlimit &&
1292                     !dquot->dq_dqb.dqb_bsoftlimit)
1293                         dquot->dq_dqb.dqb_curspace = 0;
1294
1295                 /* clear grace time */
1296                 if (!dqblk->dqb_bsoftlimit ||
1297                     toqb(dquot->dq_dqb.dqb_curspace) <= dqblk->dqb_bsoftlimit)
1298                         dquot->dq_dqb.dqb_btime = 0;
1299                 /* set grace only if user hasn't provided his own */
1300                 else if (!(dqblk->dqb_valid & QIF_BTIME))
1301                         dquot->dq_dqb.dqb_btime = cfs_time_current_sec() +
1302                                 qinfo->qi_info[dquot->dq_type].dqi_bgrace;
1303
1304                 flag |= LQUOTA_FLAGS_ADJBLK;
1305         }
1306
1307         if (dqblk->dqb_valid & QIF_ILIMITS) {
1308                 dquot->dq_dqb.dqb_ihardlimit = dqblk->dqb_ihardlimit;
1309                 dquot->dq_dqb.dqb_isoftlimit = dqblk->dqb_isoftlimit;
1310                 /* clear usage (limit pool) */
1311                 if (!dquot->dq_dqb.dqb_ihardlimit &&
1312                     !dquot->dq_dqb.dqb_isoftlimit)
1313                         dquot->dq_dqb.dqb_curinodes = 0;
1314
1315                 if (!dqblk->dqb_isoftlimit ||
1316                     dquot->dq_dqb.dqb_curinodes <= dqblk->dqb_isoftlimit)
1317                         dquot->dq_dqb.dqb_itime = 0;
1318                 else if (!(dqblk->dqb_valid & QIF_ITIME))
1319                         dquot->dq_dqb.dqb_itime = cfs_time_current_sec() +
1320                                 qinfo->qi_info[dquot->dq_type].dqi_igrace;
1321
1322                 flag |= LQUOTA_FLAGS_ADJINO;
1323         }
1324         QAQ_DEBUG(oqaq, "before dquot_create_oqaq\n");
1325         rc = dquot_create_oqaq(qctxt, dquot, lov->desc.ld_tgt_count, 1,
1326                                flag, oqaq);
1327         QAQ_DEBUG(oqaq, "after dquot_create_oqaq\n");
1328         if (rc < 0)
1329                 CDEBUG(D_QUOTA, "adjust qunit size failed! (rc:%d)\n", rc);
1330
1331
1332         rc = fsfilt_dquot(obd, dquot, QFILE_WR_DQUOT);
1333
1334         up(&dquot->dq_sem);
1335
1336         if (rc) {
1337                 CERROR("set limit failed! (rc:%d)\n", rc);
1338                 goto out;
1339         }
1340
1341         up(&mds->mds_qonoff_sem);
1342         orig_set = ihardlimit || isoftlimit;
1343         now_set  = dqblk->dqb_ihardlimit || dqblk->dqb_isoftlimit;
1344         if (dqblk->dqb_valid & QIF_ILIMITS && orig_set != now_set) {
1345                 down(&dquot->dq_sem);
1346                 dquot->dq_dqb.dqb_curinodes = 0;
1347                 up(&dquot->dq_sem);
1348                 rc = mds_init_slave_ilimits(obd, oqctl, orig_set, oqaq);
1349                 if (rc) {
1350                         CERROR("init slave ilimits failed! (rc:%d)\n", rc);
1351                         goto revoke_out;
1352                 }
1353         }
1354
1355         orig_set = bhardlimit || bsoftlimit;
1356         now_set  = dqblk->dqb_bhardlimit || dqblk->dqb_bsoftlimit;
1357         if (dqblk->dqb_valid & QIF_BLIMITS && orig_set != now_set) {
1358                 down(&dquot->dq_sem);
1359                 dquot->dq_dqb.dqb_curspace = 0;
1360                 up(&dquot->dq_sem);
1361                 rc = mds_init_slave_blimits(obd, oqctl, orig_set, oqaq);
1362                 if (rc) {
1363                         CERROR("init slave blimits failed! (rc:%d)\n", rc);
1364                         goto revoke_out;
1365                 }
1366         }
1367
1368 revoke_out:
1369         down(&mds->mds_qonoff_sem);
1370         down(&dquot->dq_sem);
1371         if (rc) {
1372                 /* cancel previous setting */
1373                 dquot->dq_dqb.dqb_ihardlimit = ihardlimit;
1374                 dquot->dq_dqb.dqb_isoftlimit = isoftlimit;
1375                 dquot->dq_dqb.dqb_bhardlimit = bhardlimit;
1376                 dquot->dq_dqb.dqb_bsoftlimit = bsoftlimit;
1377                 dquot->dq_dqb.dqb_btime = btime;
1378                 dquot->dq_dqb.dqb_itime = itime;
1379         }
1380         rc2 = fsfilt_dquot(obd, dquot, QFILE_WR_DQUOT);
1381         up(&dquot->dq_sem);
1382
1383 out:
1384         down(&dquot->dq_sem);
1385         dquot->dq_status &= ~DQ_STATUS_SET;
1386         up(&dquot->dq_sem);
1387         lustre_dqput(dquot);
1388         EXIT;
1389 out_sem:
1390         up(&mds->mds_qonoff_sem);
1391
1392         if (oqaq)
1393                 OBD_FREE_PTR(oqaq);
1394
1395         return rc ? rc : rc2;
1396 }
1397
1398 static int mds_get_space(struct obd_device *obd, struct obd_quotactl *oqctl)
1399 {
1400         struct obd_quotactl *soqc;
1401         struct lvfs_run_ctxt saved;
1402         int rc, rc1;
1403         ENTRY;
1404
1405         OBD_ALLOC_PTR(soqc);
1406         if (!soqc)
1407                 RETURN(-ENOMEM);
1408
1409         soqc->qc_cmd = Q_GETOQUOTA;
1410         soqc->qc_id = oqctl->qc_id;
1411         soqc->qc_type = oqctl->qc_type;
1412
1413         /* get block usage from OSS */
1414         soqc->qc_dqblk.dqb_curspace = 0;
1415         rc = obd_quotactl(obd->u.mds.mds_osc_exp, soqc);
1416         if (!rc || rc == -EREMOTEIO) {
1417                 oqctl->qc_dqblk.dqb_curspace = soqc->qc_dqblk.dqb_curspace;
1418                 oqctl->qc_dqblk.dqb_valid |= QIF_SPACE;
1419         }
1420
1421         /* get block/inode usage from MDS */
1422         soqc->qc_dqblk.dqb_curspace = 0;
1423         soqc->qc_dqblk.dqb_curinodes = 0;
1424         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1425         rc1 = fsfilt_quotactl(obd, obd->u.obt.obt_sb, soqc);
1426         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1427         if (!rc1) {
1428                 oqctl->qc_dqblk.dqb_curspace += soqc->qc_dqblk.dqb_curspace;
1429                 oqctl->qc_dqblk.dqb_curinodes = soqc->qc_dqblk.dqb_curinodes;
1430                 oqctl->qc_dqblk.dqb_valid |= QIF_INODES;
1431         }
1432
1433         OBD_FREE_PTR(soqc);
1434
1435         RETURN(rc ? : rc1);
1436 }
1437
1438 int mds_get_dqblk(struct obd_device *obd, struct obd_quotactl *oqctl)
1439 {
1440         struct mds_obd *mds = &obd->u.mds;
1441         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
1442         struct lustre_dquot *dquot;
1443         struct obd_dqblk *dqblk = &oqctl->qc_dqblk;
1444         int rc;
1445         ENTRY;
1446
1447         if (oqctl->qc_type != USRQUOTA &&
1448             oqctl->qc_type != GRPQUOTA)
1449                 RETURN(-EINVAL);
1450
1451         down(&mds->mds_qonoff_sem);
1452         dqblk->dqb_valid = 0;
1453         if (qinfo->qi_files[oqctl->qc_type] == NULL)
1454                 GOTO(out, rc = -ESRCH);
1455
1456         dquot = lustre_dqget(obd, qinfo, oqctl->qc_id, oqctl->qc_type);
1457         if (IS_ERR(dquot))
1458                 GOTO(out, rc = PTR_ERR(dquot));
1459
1460         down(&dquot->dq_sem);
1461         dqblk->dqb_ihardlimit = dquot->dq_dqb.dqb_ihardlimit;
1462         dqblk->dqb_isoftlimit = dquot->dq_dqb.dqb_isoftlimit;
1463         dqblk->dqb_bhardlimit = dquot->dq_dqb.dqb_bhardlimit;
1464         dqblk->dqb_bsoftlimit = dquot->dq_dqb.dqb_bsoftlimit;
1465         dqblk->dqb_btime = dquot->dq_dqb.dqb_btime;
1466         dqblk->dqb_itime = dquot->dq_dqb.dqb_itime;
1467         dqblk->dqb_valid |= QIF_LIMITS | QIF_TIMES;
1468         up(&dquot->dq_sem);
1469
1470         lustre_dqput(dquot);
1471
1472         /* the usages in admin quota file is inaccurate */
1473         dqblk->dqb_curinodes = 0;
1474         dqblk->dqb_curspace = 0;
1475         rc = mds_get_space(obd, oqctl);
1476         EXIT;
1477 out:
1478         up(&mds->mds_qonoff_sem);
1479         return rc;
1480 }
1481
1482 int mds_get_obd_quota(struct obd_device *obd, struct obd_quotactl *oqctl)
1483 {
1484         struct lvfs_run_ctxt saved;
1485         int rc;
1486         ENTRY;
1487
1488         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1489         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
1490         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1491
1492         RETURN(rc);
1493 }
1494
1495
1496 /* FIXME we only recovery block limit by now, need recovery inode
1497  * limits also after CMD involved in */
1498 static int
1499 dquot_recovery(struct obd_device *obd, unsigned int id, unsigned short type)
1500 {
1501         struct mds_obd *mds = &obd->u.mds;
1502         struct lustre_quota_info *qinfo= &mds->mds_quota_info;
1503         struct lustre_dquot *dquot;
1504         struct obd_quotactl *qctl;
1505         __u64 total_limits = 0;
1506         int rc;
1507         ENTRY;
1508
1509         OBD_ALLOC_PTR(qctl);
1510         if (qctl == NULL)
1511                 RETURN(-ENOMEM);
1512
1513         dquot = lustre_dqget(obd, qinfo, id, type);
1514         if (IS_ERR(dquot)) {
1515                 CERROR("Get dquot failed. (rc:%ld)\n", PTR_ERR(dquot));
1516                 OBD_FREE_PTR(qctl);
1517                 RETURN(PTR_ERR(dquot));
1518         }
1519
1520         down(&dquot->dq_sem);
1521
1522         /* don't recovery the dquot without limits or under setting */
1523         if (!(dquot->dq_dqb.dqb_bhardlimit || dquot->dq_dqb.dqb_bsoftlimit) ||
1524             dquot->dq_status)
1525                 GOTO(skip, rc = 0);
1526         dquot->dq_status |= DQ_STATUS_RECOVERY;
1527
1528         up(&dquot->dq_sem);
1529
1530         /* get real bhardlimit from all slaves. */
1531         qctl->qc_cmd = Q_GETOQUOTA;
1532         qctl->qc_type = type;
1533         qctl->qc_id = id;
1534         qctl->qc_stat = QUOTA_RECOVERING;
1535         rc = obd_quotactl(mds->mds_osc_exp, qctl);
1536         if (rc)
1537                 GOTO(out, rc);
1538         total_limits = qctl->qc_dqblk.dqb_bhardlimit;
1539
1540         /* get real bhardlimit from master */
1541         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, qctl);
1542         if (rc)
1543                 GOTO(out, rc);
1544         total_limits += qctl->qc_dqblk.dqb_bhardlimit;
1545
1546         /* amend the usage of the administrative quotafile */
1547         down(&mds->mds_qonoff_sem);
1548         down(&dquot->dq_sem);
1549
1550         dquot->dq_dqb.dqb_curspace = total_limits << QUOTABLOCK_BITS;
1551
1552         rc = fsfilt_dquot(obd, dquot, QFILE_WR_DQUOT);
1553         if (rc)
1554                 CERROR("write dquot failed! (rc:%d)\n", rc);
1555
1556         up(&dquot->dq_sem);
1557         up(&mds->mds_qonoff_sem);
1558         EXIT;
1559 out:
1560         down(&dquot->dq_sem);
1561         dquot->dq_status &= ~DQ_STATUS_RECOVERY;
1562 skip:
1563         up(&dquot->dq_sem);
1564
1565         lustre_dqput(dquot);
1566         OBD_FREE_PTR(qctl);
1567         return rc;
1568 }
1569
1570 struct qmaster_recov_thread_data {
1571         struct obd_device *obd;
1572         struct completion comp;
1573 };
1574
1575 static int qmaster_recovery_main(void *arg)
1576 {
1577         struct qmaster_recov_thread_data *data = arg;
1578         struct obd_device *obd = data->obd;
1579         struct mds_obd *mds = &obd->u.mds;
1580         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
1581         int rc = 0;
1582         unsigned short type;
1583         ENTRY;
1584
1585         ptlrpc_daemonize("qmaster_recovd");
1586
1587         /* for mds */
1588         class_incref(obd, "qmaster_recovd_mds", obd);
1589         /* for lov */
1590         class_incref(mds->mds_osc_obd, "qmaster_recovd_lov", mds->mds_osc_obd);
1591
1592         complete(&data->comp);
1593
1594         for (type = USRQUOTA; type < MAXQUOTAS; type++) {
1595                 struct list_head id_list;
1596                 struct dquot_id *dqid, *tmp;
1597
1598                 down(&mds->mds_qonoff_sem);
1599                 if (qinfo->qi_files[type] == NULL) {
1600                         up(&mds->mds_qonoff_sem);
1601                         continue;
1602                 }
1603                 CFS_INIT_LIST_HEAD(&id_list);
1604                 rc = fsfilt_qids(obd, qinfo->qi_files[type], NULL, type,
1605                                  &id_list);
1606                 up(&mds->mds_qonoff_sem);
1607
1608                 if (rc)
1609                         CERROR("error get ids from admin quotafile.(%d)\n", rc);
1610
1611                 list_for_each_entry_safe(dqid, tmp, &id_list, di_link) {
1612                         list_del_init(&dqid->di_link);
1613                         if (rc)
1614                                 goto free;
1615
1616                         rc = dquot_recovery(obd, dqid->di_id, type);
1617                         if (rc)
1618                                 CERROR("qmaster recovery failed! (id:%d type:%d"
1619                                        " rc:%d)\n", dqid->di_id, type, rc);
1620 free:
1621                         kfree(dqid);
1622                 }
1623         }
1624         class_decref(mds->mds_osc_obd, "qmaster_recovd_lov", mds->mds_osc_obd);
1625         class_decref(obd, "qmaster_recovd_mds", obd);
1626         RETURN(rc);
1627 }
1628
1629 int mds_quota_recovery(struct obd_device *obd)
1630 {
1631         struct mds_obd *mds = &obd->u.mds;
1632         struct qmaster_recov_thread_data data;
1633         int rc = 0;
1634         ENTRY;
1635
1636         if (unlikely(!mds->mds_quota || obd->obd_stopping))
1637                 RETURN(rc);
1638
1639         mutex_down(&obd->obd_dev_sem);
1640         if (mds->mds_lov_desc.ld_active_tgt_count != mds->mds_lov_objid_count) {
1641                 CWARN("Only %u/%u OSTs are active, abort quota recovery\n",
1642                       mds->mds_lov_desc.ld_active_tgt_count,
1643                       mds->mds_lov_objid_count);
1644                 mutex_up(&obd->obd_dev_sem);
1645                 RETURN(rc);
1646         }
1647         mutex_up(&obd->obd_dev_sem);
1648
1649         data.obd = obd;
1650         init_completion(&data.comp);
1651
1652         rc = kernel_thread(qmaster_recovery_main, &data, CLONE_VM|CLONE_FILES);
1653         if (rc < 0)
1654                 CERROR("Cannot start quota recovery thread: rc %d\n", rc);
1655
1656         wait_for_completion(&data.comp);
1657         RETURN(rc);
1658 }
1659
1660 #endif /* HAVE_QUOTA_SUPPORT */