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 uid = 0, gid = 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                 gid = dquot->dq_id;
 309         else
 310                 uid = dquot->dq_id;
 311
 312         up(&dquot->dq_sem);
 313
 314         rc = qctxt_adjust_qunit(obd, qctxt, uid, gid, 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, unsigned int qcids[],
 475                      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], qpids[1], 0, 0,
 488                                           NULL);
 489                 /* release block quota on original owner */
 490                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids[0], qpids[1], 1, 0,
 491                                           NULL);
 492                 /* acquire file quota on current owner */
 493                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids[0], qcids[1], 0, 0,
 494                                           NULL);
 495                 /* acquire block quota on current owner */
 496                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids[0], qcids[1], 1, 0,
 497                                           NULL);
 498                 break;
 499         case FSFILT_OP_UNLINK_PARTIAL_CHILD:
 500                 /* release file quota on child */
 501                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids[0], qcids[1], 0, 0,
 502                                           NULL);
 503                 /* rlease block quota on child */
 504                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids[0], qcids[1], 1, 0,
 505                                           NULL);
 506                 break;
 507         case FSFILT_OP_CREATE_PARTIAL_CHILD:
 508                 /* acquire file quota on child */
 509                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids[0], qcids[1], 0, 0,
 510                                           NULL);
 511                 /* acquire block quota on child */
 512                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids[0], qcids[1], 1, 0,
 513                                           NULL);
 514                 break;
 515         case FSFILT_OP_LINK:
 516                 /* acquire block quota on parent */
 517                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids[0], qpids[1], 1, 0,
 518                                           NULL);
 519                 break;
 520         case FSFILT_OP_UNLINK:
 521                 /* release block quota on parent */
 522                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids[0], qpids[1], 1, 0,
 523                                           NULL);
 524                 /* release file quota on child */
 525                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids[0], qcids[1], 0, 0,
 526                                           NULL);
 527                 if (qpids[0] != qcids[0] || qpids[1] != qcids[1])
 528                         /* release block quota on child */
 529                         rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids[0],
 530                                                   qcids[1], 1, 0, NULL);
 531                 break;
 532         case FSFILT_OP_UNLINK_PARTIAL_PARENT:
 533                 /* release block quota on parent */
 534                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids[0], qpids[1], 1, 0,
 535                                           NULL);
 536                 break;
 537         case FSFILT_OP_CREATE:
 538                 /* acquire block quota on parent */
 539                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids[0], qpids[1], 1, 0,
 540                                           NULL);
 541                 /* acquire file quota on child */
 542                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids[0], qcids[1], 0, 0,
 543                                           NULL);
 544                 if (qpids[0] != qcids[0] || qpids[1] != qcids[1])
 545                         /* acquire block quota on child */
 546                         rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids[0],
 547                                                   qcids[1], 1, 0, NULL);
 548                 break;
 549         default:
 550                 LBUG();
 551                 break;
 552         }
 553
 554         if (rc2)
 555                 CDEBUG(rc2 == QUOTA_REQ_RETURNED ? D_QUOTA: D_ERROR,
 556                        "mds adjust qunit %ssuccessfully! (opc:%d rc:%d)\n",
 557                        rc2 == QUOTA_REQ_RETURNED ? "" : "un", opc, rc2);
 558         RETURN(0);
 559 }
 560
 561 int filter_quota_adjust(struct obd_device *obd, unsigned int qcids[],
 562                         unsigned int qpids[], int rc, int opc)
 563 {
 564         struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
 565         int rc2 = 0;
 566         ENTRY;
 567
 568         if (rc && rc != -EDQUOT)
 569                 RETURN(0);
 570
 571         switch (opc) {
 572         case FSFILT_OP_SETATTR:
 573                 /* acquire/release block quota on original & current owner */
 574                 rc = qctxt_adjust_qunit(obd, qctxt, qcids[0], qcids[1], 1, 0,
 575                                         NULL);
 576                 rc2 = qctxt_adjust_qunit(obd, qctxt, qpids[0], qpids[1], 1, 0,
 577                                          NULL);
 578                 break;
 579         case FSFILT_OP_UNLINK:
 580                 /* release block quota on this owner */
 581         case FSFILT_OP_CREATE: /* XXX for write operation on obdfilter */
 582                 /* acquire block quota on this owner */
 583                 rc = qctxt_adjust_qunit(obd, qctxt, qcids[0], qcids[1], 1, 0,
 584                                         NULL);
 585                 break;
 586         default:
 587                 LBUG();
 588                 break;
 589         }
 590
 591         if (rc || rc2) {
 592                 if (!rc)
 593                         rc = rc2;
 594                 CDEBUG(rc == QUOTA_REQ_RETURNED ? D_QUOTA: D_ERROR,
 595                        "filter adjust qunit %ssuccessfully! (opc:%d rc%d)\n",
 596                        QUOTA_REQ_RETURNED ? "" : "un", opc, rc);
 597         }
 598
 599         RETURN(0);
 600 }
 601
 602 static const char prefix[] = "OBJECTS/";
 603
 604 int mds_quota_invalidate(struct obd_device *obd, struct obd_quotactl *oqctl)
 605 {
 606         struct mds_obd *mds = &obd->u.mds;
 607         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
 608         int rc = 0, i;
 609         char *quotafile[] = LUSTRE_ADMIN_QUOTAFILES_V2;
 610         char name[64];
 611         struct lvfs_run_ctxt saved;
 612
 613         LASSERT(qinfo->qi_version == LUSTRE_QUOTA_V2);
 614
 615         if (oqctl->qc_type != USRQUOTA &&
 616             oqctl->qc_type != GRPQUOTA &&
 617             oqctl->qc_type != UGQUOTA)
 618                 return -EINVAL;
 619
 620         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 621
 622         down(&mds->mds_qonoff_sem);
 623
 624         for (i = 0; i < MAXQUOTAS; i++) {
 625                 struct file *fp;
 626
 627                 if (!Q_TYPESET(oqctl, i))
 628                         continue;
 629
 630                 /* quota file has been opened ? */
 631                 if (qinfo->qi_files[i]) {
 632                         rc = -EBUSY;
 633                         goto out;
 634                 }
 635
 636                 LASSERT(strlen(quotafile[i]) + sizeof(prefix) <= sizeof(name));
 637                 sprintf(name, "%s%s", prefix, quotafile[i]);
 638
 639                 fp = filp_open(name, O_CREAT | O_TRUNC | O_RDWR, 0644);
 640                 if (IS_ERR(fp)) {
 641                         rc = PTR_ERR(fp);
 642                         CERROR("error invalidating admin quotafile %s (rc:%d)\n",
 643                                name, rc);
 644                 }
 645                 else
 646                         filp_close(fp, 0);
 647         }
 648
 649 out:
 650         up(&mds->mds_qonoff_sem);
 651
 652         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 653
 654         return rc;
 655 }
 656
 657 int mds_quota_finvalidate(struct obd_device *obd, struct obd_quotactl *oqctl)
 658 {
 659         struct mds_obd *mds = &obd->u.mds;
 660         int rc;
 661         struct lvfs_run_ctxt saved;
 662
 663         if (oqctl->qc_type != USRQUOTA &&
 664             oqctl->qc_type != GRPQUOTA &&
 665             oqctl->qc_type != UGQUOTA)
 666                 RETURN(-EINVAL);
 667
 668         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 669         down(&mds->mds_qonoff_sem);
 670
 671         oqctl->qc_cmd = Q_FINVALIDATE;
 672         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 673         if (!rc)
 674                 rc = obd_quotactl(mds->mds_osc_exp, oqctl);
 675
 676         up(&mds->mds_qonoff_sem);
 677         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 678
 679         return rc;
 680 }
 681
 682 int init_admin_quotafiles(struct obd_device *obd, struct obd_quotactl *oqctl)
 683 {
 684         struct mds_obd *mds = &obd->u.mds;
 685         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
 686         const char *quotafile[] = LUSTRE_ADMIN_QUOTAFILES_V2;
 687         struct lvfs_run_ctxt saved;
 688         char name[64];
 689         int i, rc = 0;
 690         ENTRY;
 691
 692         LASSERT(qinfo->qi_version == LUSTRE_QUOTA_V2);
 693
 694         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 695
 696         down(&mds->mds_qonoff_sem);
 697
 698         for (i = 0; i < MAXQUOTAS && !rc; i++) {
 699                 struct file *fp;
 700
 701                 if (!Q_TYPESET(oqctl, i))
 702                         continue;
 703
 704                 /* quota file has been opened ? */
 705                 if (qinfo->qi_files[i]) {
 706                         CWARN("init %s admin quotafile while quota on.\n",
 707                               i == USRQUOTA ? "user" : "group");
 708                         continue;
 709                 }
 710
 711                 LASSERT(strlen(quotafile[i]) + sizeof(prefix) <= sizeof(name));
 712                 sprintf(name, "%s%s", prefix, quotafile[i]);
 713
 714                 /* check if quota file exists and is correct */
 715                 fp = filp_open(name, O_RDONLY, 0);
 716                 if (!IS_ERR(fp)) {
 717                         /* irregular file is not the right place for quota */
 718                         if (!S_ISREG(fp->f_dentry->d_inode->i_mode)) {
 719                                 CERROR("admin quota file %s is not "
 720                                        "regular!", name);
 721                                 filp_close(fp, 0);
 722                                 rc = -EINVAL;
 723                                 break;
 724                         }
 725                         qinfo->qi_files[i] = fp;
 726                         rc = fsfilt_quotainfo(obd, qinfo, i, QFILE_CHK);
 727                         qinfo->qi_files[i] = 0;
 728                         filp_close(fp, 0);
 729                 }
 730                 else
 731                         rc = PTR_ERR(fp);
 732
 733                 if (!rc)
 734                         continue;
 735
 736                 /* -EINVAL may be returned by quotainfo for bad quota file */
 737                 if (rc != -ENOENT && rc != -EINVAL) {
 738                         CERROR("error opening old quota file %s (%d)\n",
 739                                name, rc);
 740                         break;
 741                 }
 742
 743                 CDEBUG(D_INFO, "%s new quota file %s\n", name,
 744                        rc == -ENOENT ? "creating" : "overwriting");
 745
 746                 /* create quota file overwriting old if needed */
 747                 fp = filp_open(name, O_CREAT | O_TRUNC | O_RDWR, 0644);
 748                 if (IS_ERR(fp)) {
 749                         rc = PTR_ERR(fp);
 750                         CERROR("error creating admin quotafile %s (rc:%d)\n",
 751                                name, rc);
 752                         break;
 753                 }
 754
 755                 qinfo->qi_files[i] = fp;
 756
 757                 rc = fsfilt_quotainfo(obd, qinfo, i, QFILE_INIT_INFO);
 758                 if (rc)
 759                         CERROR("error init %s admin quotafile! (rc:%d)\n",
 760                                i == USRQUOTA ? "user" : "group", rc);
 761
 762                 filp_close(fp, 0);
 763                 qinfo->qi_files[i] = NULL;
 764         }
 765         up(&mds->mds_qonoff_sem);
 766
 767         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 768         RETURN(rc);
 769 }
 770
 771 static int close_quota_files(struct obd_quotactl *oqctl,
 772                              struct lustre_quota_info *qinfo)
 773 {
 774         int i, rc = 0;
 775         ENTRY;
 776
 777         for (i = 0; i < MAXQUOTAS; i++) {
 778                 if (!Q_TYPESET(oqctl, i))
 779                         continue;
 780                 if (qinfo->qi_files[i] == NULL) {
 781                         rc = -ESRCH;
 782                         continue;
 783                 }
 784                 filp_close(qinfo->qi_files[i], 0);
 785                 qinfo->qi_files[i] = NULL;
 786         }
 787         RETURN(rc);
 788 }
 789
 790 int mds_admin_quota_on(struct obd_device *obd, struct obd_quotactl *oqctl)
 791 {
 792         struct mds_obd *mds = &obd->u.mds;
 793         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
 794         const char *quotafile[] = LUSTRE_ADMIN_QUOTAFILES_V2;
 795         char name[64];
 796         int i, rc = 0;
 797         ENTRY;
 798
 799         LASSERT(qinfo->qi_version == LUSTRE_QUOTA_V2);
 800
 801         /* open admin quota files and read quotafile info */
 802         for (i = 0; i < MAXQUOTAS; i++) {
 803                 struct file *fp;
 804
 805                 if (!Q_TYPESET(oqctl, i))
 806                         continue;
 807
 808                 LASSERT(strlen(quotafile[i])
 809                         + sizeof(prefix) <= sizeof(name));
 810                 sprintf(name, "%s%s", prefix, quotafile[i]);
 811
 812                 if (qinfo->qi_files[i] != NULL) {
 813                         rc = -EBUSY;
 814                         break;
 815                 }
 816
 817                 fp = filp_open(name, O_RDWR, 0);
 818                 if (IS_ERR(fp) || !S_ISREG(fp->f_dentry->d_inode->i_mode)) {
 819                         rc = IS_ERR(fp) ? PTR_ERR(fp) : -EINVAL;
 820                         CERROR("error open/create %s! (rc:%d)\n", name, rc);
 821                         break;
 822                 }
 823                 qinfo->qi_files[i] = fp;
 824
 825                 rc = fsfilt_quotainfo(obd, qinfo, i, QFILE_CHK);
 826                 if (rc) {
 827                         CERROR("invalid quota file %s! (rc:%d)\n", name, rc);
 828                         break;
 829                 }
 830
 831                 rc = fsfilt_quotainfo(obd, qinfo, i, QFILE_RD_INFO);
 832                 if (rc) {
 833                         CERROR("error read quotainfo of %s! (rc:%d)\n", name,
 834                                rc);
 835                         break;
 836                 }
 837         }
 838
 839         if (rc && rc != -EBUSY)
 840                 close_quota_files(oqctl, qinfo);
 841
 842         RETURN(rc);
 843 }
 844
 845 int mds_admin_quota_off(struct obd_device *obd,
 846                         struct obd_quotactl *oqctl)
 847 {
 848         struct mds_obd *mds = &obd->u.mds;
 849         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
 850         int rc;
 851         ENTRY;
 852
 853         /* close admin quota files */
 854         rc = close_quota_files(oqctl, qinfo);
 855         RETURN(rc);
 856 }
 857
 858 int mds_quota_on(struct obd_device *obd, struct obd_quotactl *oqctl)
 859 {
 860         struct mds_obd *mds = &obd->u.mds;
 861         struct obd_device_target *obt = &obd->u.obt;
 862         struct lvfs_run_ctxt saved;
 863         int rc;
 864         ENTRY;
 865
 866         if (oqctl->qc_type != USRQUOTA &&
 867             oqctl->qc_type != GRPQUOTA &&
 868             oqctl->qc_type != UGQUOTA)
 869                 RETURN(-EINVAL);
 870
 871         if (!atomic_dec_and_test(&obt->obt_quotachecking)) {
 872                 CDEBUG(D_INFO, "other people are doing quotacheck\n");
 873                 atomic_inc(&obt->obt_quotachecking);
 874                 RETURN(-EBUSY);
 875         }
 876
 877         down(&mds->mds_qonoff_sem);
 878         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 879         rc = mds_admin_quota_on(obd, oqctl);
 880         if (rc)
 881                 GOTO(out, rc);
 882
 883         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 884         if (!rc)
 885                 obt->obt_qctxt.lqc_flags |= UGQUOTA2LQC(oqctl->qc_type);
 886         else
 887                 GOTO(out, rc);
 888
 889         rc = obd_quotactl(mds->mds_osc_exp, oqctl);
 890
 891 out:
 892         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 893         up(&mds->mds_qonoff_sem);
 894         atomic_inc(&obt->obt_quotachecking);
 895         RETURN(rc);
 896 }
 897
 898 int mds_quota_off(struct obd_device *obd, struct obd_quotactl *oqctl)
 899 {
 900         struct mds_obd *mds = &obd->u.mds;
 901         struct obd_device_target *obt = &obd->u.obt;
 902         struct lvfs_run_ctxt saved;
 903         int rc, rc2;
 904         ENTRY;
 905
 906         if (oqctl->qc_type != USRQUOTA &&
 907             oqctl->qc_type != GRPQUOTA &&
 908             oqctl->qc_type != UGQUOTA)
 909                 RETURN(-EINVAL);
 910
 911         if (!atomic_dec_and_test(&obt->obt_quotachecking)) {
 912                 CDEBUG(D_INFO, "other people are doing quotacheck\n");
 913                 atomic_inc(&obt->obt_quotachecking);
 914                 RETURN(-EBUSY);
 915         }
 916
 917         down(&mds->mds_qonoff_sem);
 918         /* close admin quota files */
 919         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 920         mds_admin_quota_off(obd, oqctl);
 921
 922         rc = obd_quotactl(mds->mds_osc_exp, oqctl);
 923         rc2 = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 924         if (!rc2)
 925                 obt->obt_qctxt.lqc_flags &= ~UGQUOTA2LQC(oqctl->qc_type);
 926
 927         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 928         up(&mds->mds_qonoff_sem);
 929         atomic_inc(&obt->obt_quotachecking);
 930
 931         RETURN(rc ?: rc2);
 932 }
 933
 934 int mds_set_dqinfo(struct obd_device *obd, struct obd_quotactl *oqctl)
 935 {
 936         struct mds_obd *mds = &obd->u.mds;
 937         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
 938         struct obd_dqinfo *dqinfo = &oqctl->qc_dqinfo;
 939         int rc;
 940         ENTRY;
 941
 942         if (oqctl->qc_type != USRQUOTA &&
 943             oqctl->qc_type != GRPQUOTA)
 944                 RETURN(-EINVAL);
 945
 946         down(&mds->mds_qonoff_sem);
 947         if (qinfo->qi_files[oqctl->qc_type] == NULL) {
 948                 rc = -ESRCH;
 949                 goto out;
 950         }
 951
 952         qinfo->qi_info[oqctl->qc_type].dqi_bgrace = dqinfo->dqi_bgrace;
 953         qinfo->qi_info[oqctl->qc_type].dqi_igrace = dqinfo->dqi_igrace;
 954         qinfo->qi_info[oqctl->qc_type].dqi_flags = dqinfo->dqi_flags;
 955
 956         rc = fsfilt_quotainfo(obd, qinfo, oqctl->qc_type, QFILE_WR_INFO);
 957
 958 out:
 959         up(&mds->mds_qonoff_sem);
 960         RETURN(rc);
 961 }
 962
 963 int mds_get_dqinfo(struct obd_device *obd, struct obd_quotactl *oqctl)
 964 {
 965         struct mds_obd *mds = &obd->u.mds;
 966         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
 967         struct obd_dqinfo *dqinfo = &oqctl->qc_dqinfo;
 968         int rc = 0;
 969         ENTRY;
 970
 971         if (oqctl->qc_type != USRQUOTA &&
 972             oqctl->qc_type != GRPQUOTA)
 973                 RETURN(-EINVAL);
 974
 975         down(&mds->mds_qonoff_sem);
 976         if (qinfo->qi_files[oqctl->qc_type] == NULL) {
 977                 rc = -ESRCH;
 978                 goto out;
 979         }
 980
 981         dqinfo->dqi_bgrace = qinfo->qi_info[oqctl->qc_type].dqi_bgrace;
 982         dqinfo->dqi_igrace = qinfo->qi_info[oqctl->qc_type].dqi_igrace;
 983         dqinfo->dqi_flags = qinfo->qi_info[oqctl->qc_type].dqi_flags;
 984
 985 out:
 986         up(&mds->mds_qonoff_sem);
 987         RETURN(rc);
 988 }
 989
 990 int dquot_create_oqaq(struct lustre_quota_ctxt *qctxt,
 991                       struct lustre_dquot *dquot, __u32 ost_num, __u32 mdt_num,
 992                       int type, struct quota_adjust_qunit *oqaq)
 993 {
 994         __u64 bunit_curr_o, iunit_curr_o;
 995         unsigned long shrink_qunit_limit = qctxt->lqc_cqs_boundary_factor;
 996         unsigned long cqs_factor = qctxt->lqc_cqs_qs_factor;
 997         __u64 blimit = dquot->dq_dqb.dqb_bhardlimit ?
 998                 dquot->dq_dqb.dqb_bhardlimit : dquot->dq_dqb.dqb_bsoftlimit;
 999         __u64 ilimit = dquot->dq_dqb.dqb_ihardlimit ?
1000                 dquot->dq_dqb.dqb_ihardlimit : dquot->dq_dqb.dqb_isoftlimit;
1001         int rc = 0;
1002         ENTRY;
1003
1004         if (!dquot || !oqaq)
1005                 RETURN(-EINVAL);
1006         LASSERT_SEM_LOCKED(&dquot->dq_sem);
1007         LASSERT(oqaq->qaq_iunit_sz);
1008         LASSERT(oqaq->qaq_bunit_sz);
1009
1010         /* don't change qunit size */
1011         if (!qctxt->lqc_switch_qs)
1012                 RETURN(rc);
1013
1014         bunit_curr_o = oqaq->qaq_bunit_sz;
1015         iunit_curr_o = oqaq->qaq_iunit_sz;
1016
1017         if (dquot->dq_type == GRPQUOTA)
1018                 QAQ_SET_GRP(oqaq);
1019
1020         if ((type & LQUOTA_FLAGS_ADJBLK) && blimit) {
1021                 __u64 b_limitation =
1022                         oqaq->qaq_bunit_sz * ost_num * shrink_qunit_limit;
1023                 /* enlarge block qunit size */
1024                 while (blimit >
1025                        QUSG(dquot->dq_dqb.dqb_curspace + 2 * b_limitation, 1)) {
1026                         oqaq->qaq_bunit_sz =
1027                                 QUSG(oqaq->qaq_bunit_sz * cqs_factor, 1)
1028                                 << QUOTABLOCK_BITS;
1029                         b_limitation = oqaq->qaq_bunit_sz * ost_num *
1030                                 shrink_qunit_limit;
1031                 }
1032
1033                 if (oqaq->qaq_bunit_sz > qctxt->lqc_bunit_sz)
1034                         oqaq->qaq_bunit_sz = qctxt->lqc_bunit_sz;
1035
1036                 /* shrink block qunit size */
1037                 while (blimit <
1038                        QUSG(dquot->dq_dqb.dqb_curspace + b_limitation, 1)) {
1039                         do_div(oqaq->qaq_bunit_sz , cqs_factor);
1040                         oqaq->qaq_bunit_sz = QUSG(oqaq->qaq_bunit_sz, 1) <<
1041                                 QUOTABLOCK_BITS;
1042                         b_limitation = oqaq->qaq_bunit_sz * ost_num *
1043                                 shrink_qunit_limit;
1044                         if (oqaq->qaq_bunit_sz <  qctxt->lqc_cqs_least_bunit)
1045                                 break;
1046                 }
1047
1048                 if (oqaq->qaq_bunit_sz < qctxt->lqc_cqs_least_bunit)
1049                         oqaq->qaq_bunit_sz = qctxt->lqc_cqs_least_bunit;
1050
1051                 if (bunit_curr_o != oqaq->qaq_bunit_sz)
1052                         QAQ_SET_ADJBLK(oqaq);
1053
1054         }
1055
1056         if ((type & LQUOTA_FLAGS_ADJINO) && ilimit) {
1057                 __u64 i_limitation =
1058                         oqaq->qaq_iunit_sz * mdt_num * shrink_qunit_limit;
1059                 /* enlarge file qunit size */
1060                 while (ilimit > dquot->dq_dqb.dqb_curinodes
1061                        + 2 * i_limitation) {
1062                         oqaq->qaq_iunit_sz = oqaq->qaq_iunit_sz * cqs_factor;
1063                         i_limitation = oqaq->qaq_iunit_sz * mdt_num *
1064                                 shrink_qunit_limit;
1065                 }
1066
1067                 if (oqaq->qaq_iunit_sz > qctxt->lqc_iunit_sz)
1068                         oqaq->qaq_iunit_sz = qctxt->lqc_iunit_sz;
1069
1070                 /* shrink file qunit size */
1071                 while (ilimit < dquot->dq_dqb.dqb_curinodes
1072                        + i_limitation) {
1073                         do_div(oqaq->qaq_iunit_sz, cqs_factor);
1074                         i_limitation = oqaq->qaq_iunit_sz * mdt_num *
1075                                        shrink_qunit_limit;
1076                         if (oqaq->qaq_iunit_sz < qctxt->lqc_cqs_least_iunit)
1077                                 break;
1078                 }
1079
1080                 if (oqaq->qaq_iunit_sz < qctxt->lqc_cqs_least_iunit)
1081                         oqaq->qaq_iunit_sz = qctxt->lqc_cqs_least_iunit;
1082
1083                 if (iunit_curr_o != oqaq->qaq_iunit_sz)
1084                         QAQ_SET_ADJINO(oqaq);
1085
1086         }
1087
1088         if (!dquot->dq_dqb.dqb_bhardlimit && !dquot->dq_dqb.dqb_bsoftlimit &&
1089             !dquot->dq_dqb.dqb_ihardlimit && !dquot->dq_dqb.dqb_isoftlimit) {
1090                 oqaq->qaq_bunit_sz = 0;
1091                 oqaq->qaq_iunit_sz = 0;
1092                 QAQ_SET_ADJBLK(oqaq);
1093                 QAQ_SET_ADJINO(oqaq);
1094         }
1095
1096         QAQ_DEBUG(oqaq, "the oqaq computed\n");
1097
1098         RETURN(rc);
1099 }
1100
1101 static int mds_init_slave_ilimits(struct obd_device *obd,
1102                                   struct obd_quotactl *oqctl, int set,
1103                                   struct quota_adjust_qunit *oqaq)
1104 {
1105         /* XXX: for file limits only adjust local now */
1106         struct obd_device_target *obt = &obd->u.obt;
1107         struct lustre_quota_ctxt *qctxt = &obt->obt_qctxt;
1108         unsigned int uid = 0, gid = 0;
1109         struct obd_quotactl *ioqc = NULL;
1110         int flag;
1111         int rc;
1112         ENTRY;
1113
1114         /* if we are going to set zero limit, needn't init slaves */
1115         if (!oqctl->qc_dqblk.dqb_ihardlimit && !oqctl->qc_dqblk.dqb_isoftlimit &&
1116             !set)
1117                 RETURN(0);
1118
1119         OBD_ALLOC_PTR(ioqc);
1120         if (!ioqc)
1121                 RETURN(-ENOMEM);
1122
1123         flag = oqctl->qc_dqblk.dqb_ihardlimit ||
1124                oqctl->qc_dqblk.dqb_isoftlimit || !set;
1125         ioqc->qc_cmd = flag ? Q_INITQUOTA : Q_SETQUOTA;
1126         ioqc->qc_id = oqctl->qc_id;
1127         ioqc->qc_type = oqctl->qc_type;
1128         ioqc->qc_dqblk.dqb_valid = QIF_ILIMITS;
1129         ioqc->qc_dqblk.dqb_ihardlimit = flag ? MIN_QLIMIT : 0;
1130
1131         if (QAQ_IS_ADJINO(oqaq)) {
1132                 /* adjust the mds slave's inode qunit size */
1133                 rc = quota_adjust_slave_lqs(oqaq, qctxt);
1134                 if (rc < 0)
1135                         CDEBUG(D_ERROR, "adjust mds slave's inode qunit size \
1136                                failed! (rc:%d)\n", rc);
1137         }
1138
1139         /* set local limit to MIN_QLIMIT */
1140         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, ioqc);
1141         if (rc)
1142                 GOTO(out, rc);
1143
1144         /* trigger local qunit pre-acquire */
1145         if (oqctl->qc_type == USRQUOTA)
1146                 uid = oqctl->qc_id;
1147         else
1148                 gid = oqctl->qc_id;
1149
1150         rc = qctxt_adjust_qunit(obd, &obd->u.obt.obt_qctxt, uid, gid, 0, 0,
1151                                 NULL);
1152         if (rc == -EDQUOT || rc == -EBUSY) {
1153                 CDEBUG(D_QUOTA, "rc: %d.\n", rc);
1154                 rc = 0;
1155         }
1156         if (rc) {
1157                 CDEBUG(D_QUOTA,"error mds adjust local file quota! (rc:%d)\n",
1158                        rc);
1159                 GOTO(out, rc);
1160         }
1161         /* FIXME initialize all slaves in CMD */
1162         EXIT;
1163 out:
1164         if (ioqc)
1165                 OBD_FREE_PTR(ioqc);
1166         return rc;
1167 }
1168
1169 static int mds_init_slave_blimits(struct obd_device *obd,
1170                                   struct obd_quotactl *oqctl, int set,
1171                                   struct quota_adjust_qunit *oqaq)
1172 {
1173         struct obd_device_target *obt = &obd->u.obt;
1174         struct lustre_quota_ctxt *qctxt = &obt->obt_qctxt;
1175         struct mds_obd *mds = &obd->u.mds;
1176         struct obd_quotactl *ioqc;
1177         unsigned int uid = 0, gid = 0;
1178         int rc, rc1 = 0;
1179         int flag;
1180         ENTRY;
1181
1182         /* if we are going to set zero limit, needn't init slaves */
1183         if (!oqctl->qc_dqblk.dqb_bhardlimit && !oqctl->qc_dqblk.dqb_bsoftlimit &&
1184             !set)
1185                 RETURN(0);
1186
1187         OBD_ALLOC_PTR(ioqc);
1188         if (!ioqc)
1189                 RETURN(-ENOMEM);
1190
1191         flag = oqctl->qc_dqblk.dqb_bhardlimit ||
1192                oqctl->qc_dqblk.dqb_bsoftlimit || !set;
1193         ioqc->qc_cmd = flag ? Q_INITQUOTA : Q_SETQUOTA;
1194         ioqc->qc_id = oqctl->qc_id;
1195         ioqc->qc_type = oqctl->qc_type;
1196         ioqc->qc_dqblk.dqb_valid = QIF_BLIMITS;
1197         ioqc->qc_dqblk.dqb_bhardlimit = flag ? MIN_QLIMIT : 0;
1198         if (QAQ_IS_ADJBLK(oqaq)) {
1199                 /* adjust the mds slave's block qunit size */
1200                 rc1 = quota_adjust_slave_lqs(oqaq, qctxt);
1201                 if (rc1 < 0)
1202                         CERROR("adjust mds slave's block qunit size failed!"
1203                                "(rc:%d)\n", rc1);
1204         }
1205
1206         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, ioqc);
1207         if (rc)
1208                 GOTO(out, rc);
1209
1210         /* trigger local qunit pre-acquire */
1211         if (oqctl->qc_type == USRQUOTA)
1212                 uid = oqctl->qc_id;
1213         else
1214                 gid = oqctl->qc_id;
1215
1216         /* initialize all slave's limit */
1217         rc = obd_quotactl(mds->mds_osc_exp, ioqc);
1218
1219         rc = qctxt_adjust_qunit(obd, &obd->u.obt.obt_qctxt, uid, gid, 1, 0,
1220                                 NULL);
1221         if (rc == -EDQUOT || rc == -EBUSY) {
1222                 CDEBUG(D_QUOTA, "rc: %d.\n", rc);
1223                 rc = 0;
1224         }
1225         if (rc) {
1226                 CERROR("error mds adjust local block quota! (rc:%d)\n", rc);
1227                 GOTO(out, rc);
1228         }
1229
1230         /* adjust all slave's qunit size when setting quota
1231          * this is will create a lqs for every ost, which will present
1232          * certain uid/gid is set quota or not */
1233         QAQ_SET_ADJBLK(oqaq);
1234         rc = obd_quota_adjust_qunit(mds->mds_osc_exp, oqaq, qctxt);
1235
1236         EXIT;
1237 out:
1238         OBD_FREE_PTR(ioqc);
1239         return rc;
1240 }
1241
1242 int mds_set_dqblk(struct obd_device *obd, struct obd_quotactl *oqctl)
1243 {
1244         struct mds_obd *mds = &obd->u.mds;
1245         struct lustre_quota_ctxt *qctxt = &mds->mds_obt.obt_qctxt;
1246         struct obd_device *lov_obd = class_exp2obd(mds->mds_osc_exp);
1247         struct lov_obd *lov = &lov_obd->u.lov;
1248         struct quota_adjust_qunit *oqaq = NULL;
1249         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
1250         __u64 ihardlimit, isoftlimit, bhardlimit, bsoftlimit;
1251         time_t btime, itime;
1252         struct lustre_dquot *dquot;
1253         struct obd_dqblk *dqblk = &oqctl->qc_dqblk;
1254         /* orig_set means if quota was set before; now_set means we are
1255          * setting/cancelling quota */
1256         int orig_set, now_set;
1257         int rc, rc2 = 0, flag = 0;
1258         ENTRY;
1259
1260         if (oqctl->qc_type != USRQUOTA &&
1261             oqctl->qc_type != GRPQUOTA)
1262                 RETURN(-EINVAL);
1263
1264         OBD_ALLOC_PTR(oqaq);
1265         if (!oqaq)
1266                 RETURN(-ENOMEM);
1267         down(&mds->mds_qonoff_sem);
1268         init_oqaq(oqaq, qctxt, oqctl->qc_id, oqctl->qc_type);
1269
1270         if (qinfo->qi_files[oqctl->qc_type] == NULL)
1271                 GOTO(out_sem, rc = -ESRCH);
1272
1273         dquot = lustre_dqget(obd, qinfo, oqctl->qc_id, oqctl->qc_type);
1274         if (IS_ERR(dquot))
1275                 GOTO(out_sem, rc = PTR_ERR(dquot));
1276         DQUOT_DEBUG(dquot, "get dquot in mds_set_blk\n");
1277         QINFO_DEBUG(dquot->dq_info, "get dquot in mds_set_blk\n");
1278
1279         down(&dquot->dq_sem);
1280
1281         if (dquot->dq_status) {
1282                 up(&dquot->dq_sem);
1283                 lustre_dqput(dquot);
1284                 GOTO(out_sem, rc = -EBUSY);
1285         }
1286         dquot->dq_status |= DQ_STATUS_SET;
1287
1288         ihardlimit = dquot->dq_dqb.dqb_ihardlimit;
1289         isoftlimit = dquot->dq_dqb.dqb_isoftlimit;
1290         bhardlimit = dquot->dq_dqb.dqb_bhardlimit;
1291         bsoftlimit = dquot->dq_dqb.dqb_bsoftlimit;
1292         btime = dquot->dq_dqb.dqb_btime;
1293         itime = dquot->dq_dqb.dqb_itime;
1294
1295         if (dqblk->dqb_valid & QIF_BTIME)
1296                 dquot->dq_dqb.dqb_btime = dqblk->dqb_btime;
1297         if (dqblk->dqb_valid & QIF_ITIME)
1298                 dquot->dq_dqb.dqb_itime = dqblk->dqb_itime;
1299
1300         if (dqblk->dqb_valid & QIF_BLIMITS) {
1301                 dquot->dq_dqb.dqb_bhardlimit = dqblk->dqb_bhardlimit;
1302                 dquot->dq_dqb.dqb_bsoftlimit = dqblk->dqb_bsoftlimit;
1303                 /* clear usage (limit pool) */
1304                 if (!dquot->dq_dqb.dqb_bhardlimit &&
1305                     !dquot->dq_dqb.dqb_bsoftlimit)
1306                         dquot->dq_dqb.dqb_curspace = 0;
1307
1308                 /* clear grace time */
1309                 if (!dqblk->dqb_bsoftlimit ||
1310                     toqb(dquot->dq_dqb.dqb_curspace) <= dqblk->dqb_bsoftlimit)
1311                         dquot->dq_dqb.dqb_btime = 0;
1312                 /* set grace only if user hasn't provided his own */
1313                 else if (!(dqblk->dqb_valid & QIF_BTIME))
1314                         dquot->dq_dqb.dqb_btime = cfs_time_current_sec() +
1315                                 qinfo->qi_info[dquot->dq_type].dqi_bgrace;
1316
1317                 flag |= LQUOTA_FLAGS_ADJBLK;
1318         }
1319
1320         if (dqblk->dqb_valid & QIF_ILIMITS) {
1321                 dquot->dq_dqb.dqb_ihardlimit = dqblk->dqb_ihardlimit;
1322                 dquot->dq_dqb.dqb_isoftlimit = dqblk->dqb_isoftlimit;
1323                 /* clear usage (limit pool) */
1324                 if (!dquot->dq_dqb.dqb_ihardlimit &&
1325                     !dquot->dq_dqb.dqb_isoftlimit)
1326                         dquot->dq_dqb.dqb_curinodes = 0;
1327
1328                 if (!dqblk->dqb_isoftlimit ||
1329                     dquot->dq_dqb.dqb_curinodes <= dqblk->dqb_isoftlimit)
1330                         dquot->dq_dqb.dqb_itime = 0;
1331                 else if (!(dqblk->dqb_valid & QIF_ITIME))
1332                         dquot->dq_dqb.dqb_itime = cfs_time_current_sec() +
1333                                 qinfo->qi_info[dquot->dq_type].dqi_igrace;
1334
1335                 flag |= LQUOTA_FLAGS_ADJINO;
1336         }
1337         QAQ_DEBUG(oqaq, "before dquot_create_oqaq\n");
1338         rc = dquot_create_oqaq(qctxt, dquot, lov->desc.ld_tgt_count, 1,
1339                                flag, oqaq);
1340         QAQ_DEBUG(oqaq, "after dquot_create_oqaq\n");
1341         if (rc < 0)
1342                 CDEBUG(D_QUOTA, "adjust qunit size failed! (rc:%d)\n", rc);
1343
1344
1345         rc = fsfilt_dquot(obd, dquot, QFILE_WR_DQUOT);
1346
1347         up(&dquot->dq_sem);
1348
1349         if (rc) {
1350                 CERROR("set limit failed! (rc:%d)\n", rc);
1351                 goto out;
1352         }
1353
1354         up(&mds->mds_qonoff_sem);
1355         orig_set = ihardlimit || isoftlimit;
1356         now_set  = dqblk->dqb_ihardlimit || dqblk->dqb_isoftlimit;
1357         if (dqblk->dqb_valid & QIF_ILIMITS && orig_set != now_set) {
1358                 down(&dquot->dq_sem);
1359                 dquot->dq_dqb.dqb_curinodes = 0;
1360                 up(&dquot->dq_sem);
1361                 rc = mds_init_slave_ilimits(obd, oqctl, orig_set, oqaq);
1362                 if (rc) {
1363                         CERROR("init slave ilimits failed! (rc:%d)\n", rc);
1364                         goto revoke_out;
1365                 }
1366         }
1367
1368         orig_set = bhardlimit || bsoftlimit;
1369         now_set  = dqblk->dqb_bhardlimit || dqblk->dqb_bsoftlimit;
1370         if (dqblk->dqb_valid & QIF_BLIMITS && orig_set != now_set) {
1371                 down(&dquot->dq_sem);
1372                 dquot->dq_dqb.dqb_curspace = 0;
1373                 up(&dquot->dq_sem);
1374                 rc = mds_init_slave_blimits(obd, oqctl, orig_set, oqaq);
1375                 if (rc) {
1376                         CERROR("init slave blimits failed! (rc:%d)\n", rc);
1377                         goto revoke_out;
1378                 }
1379         }
1380
1381 revoke_out:
1382         down(&mds->mds_qonoff_sem);
1383         down(&dquot->dq_sem);
1384         if (rc) {
1385                 /* cancel previous setting */
1386                 dquot->dq_dqb.dqb_ihardlimit = ihardlimit;
1387                 dquot->dq_dqb.dqb_isoftlimit = isoftlimit;
1388                 dquot->dq_dqb.dqb_bhardlimit = bhardlimit;
1389                 dquot->dq_dqb.dqb_bsoftlimit = bsoftlimit;
1390                 dquot->dq_dqb.dqb_btime = btime;
1391                 dquot->dq_dqb.dqb_itime = itime;
1392         }
1393         rc2 = fsfilt_dquot(obd, dquot, QFILE_WR_DQUOT);
1394         up(&dquot->dq_sem);
1395
1396 out:
1397         down(&dquot->dq_sem);
1398         dquot->dq_status &= ~DQ_STATUS_SET;
1399         up(&dquot->dq_sem);
1400         lustre_dqput(dquot);
1401         EXIT;
1402 out_sem:
1403         up(&mds->mds_qonoff_sem);
1404
1405         if (oqaq)
1406                 OBD_FREE_PTR(oqaq);
1407
1408         return rc ? rc : rc2;
1409 }
1410
1411 static int mds_get_space(struct obd_device *obd, struct obd_quotactl *oqctl)
1412 {
1413         struct obd_quotactl *soqc;
1414         struct lvfs_run_ctxt saved;
1415         int rc, rc1;
1416         ENTRY;
1417
1418         OBD_ALLOC_PTR(soqc);
1419         if (!soqc)
1420                 RETURN(-ENOMEM);
1421
1422         soqc->qc_cmd = Q_GETOQUOTA;
1423         soqc->qc_id = oqctl->qc_id;
1424         soqc->qc_type = oqctl->qc_type;
1425
1426         /* get block usage from OSS */
1427         soqc->qc_dqblk.dqb_curspace = 0;
1428         rc = obd_quotactl(obd->u.mds.mds_osc_exp, soqc);
1429         if (!rc) {
1430                 oqctl->qc_dqblk.dqb_curspace = soqc->qc_dqblk.dqb_curspace;
1431                 oqctl->qc_dqblk.dqb_valid |= QIF_SPACE;
1432         }
1433
1434         /* get block/inode usage from MDS */
1435         soqc->qc_dqblk.dqb_curspace = 0;
1436         soqc->qc_dqblk.dqb_curinodes = 0;
1437         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1438         rc1 = fsfilt_quotactl(obd, obd->u.obt.obt_sb, soqc);
1439         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1440         if (!rc1) {
1441                 oqctl->qc_dqblk.dqb_curspace += soqc->qc_dqblk.dqb_curspace;
1442                 oqctl->qc_dqblk.dqb_curinodes = soqc->qc_dqblk.dqb_curinodes;
1443                 oqctl->qc_dqblk.dqb_valid |= QIF_INODES;
1444         }
1445
1446         OBD_FREE_PTR(soqc);
1447
1448         RETURN(rc ? : rc1);
1449 }
1450
1451 int mds_get_dqblk(struct obd_device *obd, struct obd_quotactl *oqctl)
1452 {
1453         struct mds_obd *mds = &obd->u.mds;
1454         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
1455         struct lustre_dquot *dquot;
1456         struct obd_dqblk *dqblk = &oqctl->qc_dqblk;
1457         int rc;
1458         ENTRY;
1459
1460         if (oqctl->qc_type != USRQUOTA &&
1461             oqctl->qc_type != GRPQUOTA)
1462                 RETURN(-EINVAL);
1463
1464         down(&mds->mds_qonoff_sem);
1465         dqblk->dqb_valid = 0;
1466         if (qinfo->qi_files[oqctl->qc_type] == NULL)
1467                 GOTO(out, rc = -ESRCH);
1468
1469         dquot = lustre_dqget(obd, qinfo, oqctl->qc_id, oqctl->qc_type);
1470         if (IS_ERR(dquot))
1471                 GOTO(out, rc = PTR_ERR(dquot));
1472
1473         down(&dquot->dq_sem);
1474         dqblk->dqb_ihardlimit = dquot->dq_dqb.dqb_ihardlimit;
1475         dqblk->dqb_isoftlimit = dquot->dq_dqb.dqb_isoftlimit;
1476         dqblk->dqb_bhardlimit = dquot->dq_dqb.dqb_bhardlimit;
1477         dqblk->dqb_bsoftlimit = dquot->dq_dqb.dqb_bsoftlimit;
1478         dqblk->dqb_btime = dquot->dq_dqb.dqb_btime;
1479         dqblk->dqb_itime = dquot->dq_dqb.dqb_itime;
1480         dqblk->dqb_valid |= QIF_LIMITS | QIF_TIMES;
1481         up(&dquot->dq_sem);
1482
1483         lustre_dqput(dquot);
1484
1485         /* the usages in admin quota file is inaccurate */
1486         dqblk->dqb_curinodes = 0;
1487         dqblk->dqb_curspace = 0;
1488         rc = mds_get_space(obd, oqctl);
1489         EXIT;
1490 out:
1491         up(&mds->mds_qonoff_sem);
1492         return rc;
1493 }
1494
1495 int mds_get_obd_quota(struct obd_device *obd, struct obd_quotactl *oqctl)
1496 {
1497         struct lvfs_run_ctxt saved;
1498         int rc;
1499         ENTRY;
1500
1501         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1502         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
1503         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1504
1505         RETURN(rc);
1506 }
1507
1508
1509 /* FIXME we only recovery block limit by now, need recovery inode
1510  * limits also after CMD involved in */
1511 static int
1512 dquot_recovery(struct obd_device *obd, unsigned int id, unsigned short type)
1513 {
1514         struct mds_obd *mds = &obd->u.mds;
1515         struct lustre_quota_info *qinfo= &mds->mds_quota_info;
1516         struct lustre_dquot *dquot;
1517         struct obd_quotactl *qctl;
1518         __u64 total_limits = 0;
1519         int rc;
1520         ENTRY;
1521
1522         OBD_ALLOC_PTR(qctl);
1523         if (qctl == NULL)
1524                 RETURN(-ENOMEM);
1525
1526         dquot = lustre_dqget(obd, qinfo, id, type);
1527         if (IS_ERR(dquot)) {
1528                 CERROR("Get dquot failed. (rc:%ld)\n", PTR_ERR(dquot));
1529                 OBD_FREE_PTR(qctl);
1530                 RETURN(PTR_ERR(dquot));
1531         }
1532
1533         down(&dquot->dq_sem);
1534
1535         /* don't recovery the dquot without limits or under setting */
1536         if (!(dquot->dq_dqb.dqb_bhardlimit || dquot->dq_dqb.dqb_bsoftlimit) ||
1537             dquot->dq_status)
1538                 GOTO(skip, rc = 0);
1539         dquot->dq_status |= DQ_STATUS_RECOVERY;
1540
1541         up(&dquot->dq_sem);
1542
1543         /* get real bhardlimit from all slaves. */
1544         qctl->qc_cmd = Q_GETOQUOTA;
1545         qctl->qc_type = type;
1546         qctl->qc_id = id;
1547         qctl->qc_stat = QUOTA_RECOVERING;
1548         rc = obd_quotactl(mds->mds_osc_exp, qctl);
1549         if (rc)
1550                 GOTO(out, rc);
1551         total_limits = qctl->qc_dqblk.dqb_bhardlimit;
1552
1553         /* get real bhardlimit from master */
1554         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, qctl);
1555         if (rc)
1556                 GOTO(out, rc);
1557         total_limits += qctl->qc_dqblk.dqb_bhardlimit;
1558
1559         /* amend the usage of the administrative quotafile */
1560         down(&mds->mds_qonoff_sem);
1561         down(&dquot->dq_sem);
1562
1563         dquot->dq_dqb.dqb_curspace = total_limits << QUOTABLOCK_BITS;
1564
1565         rc = fsfilt_dquot(obd, dquot, QFILE_WR_DQUOT);
1566         if (rc)
1567                 CERROR("write dquot failed! (rc:%d)\n", rc);
1568
1569         up(&dquot->dq_sem);
1570         up(&mds->mds_qonoff_sem);
1571         EXIT;
1572 out:
1573         down(&dquot->dq_sem);
1574         dquot->dq_status &= ~DQ_STATUS_RECOVERY;
1575 skip:
1576         up(&dquot->dq_sem);
1577
1578         lustre_dqput(dquot);
1579         OBD_FREE_PTR(qctl);
1580         return rc;
1581 }
1582
1583 struct qmaster_recov_thread_data {
1584         struct obd_device *obd;
1585         struct completion comp;
1586 };
1587
1588 static int qmaster_recovery_main(void *arg)
1589 {
1590         struct qmaster_recov_thread_data *data = arg;
1591         struct obd_device *obd = data->obd;
1592         struct mds_obd *mds = &obd->u.mds;
1593         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
1594         int rc = 0;
1595         unsigned short type;
1596         ENTRY;
1597
1598         ptlrpc_daemonize("qmaster_recovd");
1599
1600         /* for mds */
1601         class_incref(obd, "qmaster_recovd_mds", obd);
1602         /* for lov */
1603         class_incref(mds->mds_osc_obd, "qmaster_recovd_lov", mds->mds_osc_obd);
1604
1605         complete(&data->comp);
1606
1607         for (type = USRQUOTA; type < MAXQUOTAS; type++) {
1608                 struct list_head id_list;
1609                 struct dquot_id *dqid, *tmp;
1610
1611                 down(&mds->mds_qonoff_sem);
1612                 if (qinfo->qi_files[type] == NULL) {
1613                         up(&mds->mds_qonoff_sem);
1614                         continue;
1615                 }
1616                 CFS_INIT_LIST_HEAD(&id_list);
1617                 rc = fsfilt_qids(obd, qinfo->qi_files[type], NULL, type,
1618                                  &id_list);
1619                 up(&mds->mds_qonoff_sem);
1620
1621                 if (rc)
1622                         CERROR("error get ids from admin quotafile.(%d)\n", rc);
1623
1624                 list_for_each_entry_safe(dqid, tmp, &id_list, di_link) {
1625                         list_del_init(&dqid->di_link);
1626                         if (rc)
1627                                 goto free;
1628
1629                         rc = dquot_recovery(obd, dqid->di_id, type);
1630                         if (rc)
1631                                 CERROR("qmaster recovery failed! (id:%d type:%d"
1632                                        " rc:%d)\n", dqid->di_id, type, rc);
1633 free:
1634                         kfree(dqid);
1635                 }
1636         }
1637         class_decref(mds->mds_osc_obd, "qmaster_recovd_lov", mds->mds_osc_obd);
1638         class_decref(obd, "qmaster_recovd_mds", obd);
1639         RETURN(rc);
1640 }
1641
1642 int mds_quota_recovery(struct obd_device *obd)
1643 {
1644         struct mds_obd *mds = &obd->u.mds;
1645         struct qmaster_recov_thread_data data;
1646         int rc = 0;
1647         ENTRY;
1648
1649         if (unlikely(!mds->mds_quota || obd->obd_stopping))
1650                 RETURN(rc);
1651
1652         mutex_down(&obd->obd_dev_sem);
1653         if (mds->mds_lov_desc.ld_active_tgt_count != mds->mds_lov_objid_count) {
1654                 CWARN("Only %u/%u OSTs are active, abort quota recovery\n",
1655                       mds->mds_lov_desc.ld_active_tgt_count,
1656                       mds->mds_lov_objid_count);
1657                 mutex_up(&obd->obd_dev_sem);
1658                 RETURN(rc);
1659         }
1660         mutex_up(&obd->obd_dev_sem);
1661
1662         data.obd = obd;
1663         init_completion(&data.comp);
1664
1665         rc = kernel_thread(qmaster_recovery_main, &data, CLONE_VM|CLONE_FILES);
1666         if (rc < 0)
1667                 CERROR("Cannot start quota recovery thread: rc %d\n", rc);
1668
1669         wait_for_completion(&data.comp);
1670         RETURN(rc);
1671 }
1672
1673 #endif /* HAVE_QUOTA_SUPPORT */