1 /* 2 * Copyright (c) 2000-2005 Silicon Graphics, Inc. 3 * All Rights Reserved. 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it would be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 #include "xfs.h" 19 #include "xfs_fs.h" 20 #include "xfs_shared.h" 21 #include "xfs_format.h" 22 #include "xfs_log_format.h" 23 #include "xfs_trans_resv.h" 24 #include "xfs_bit.h" 25 #include "xfs_sb.h" 26 #include "xfs_mount.h" 27 #include "xfs_inode.h" 28 #include "xfs_ialloc.h" 29 #include "xfs_itable.h" 30 #include "xfs_quota.h" 31 #include "xfs_error.h" 32 #include "xfs_bmap.h" 33 #include "xfs_bmap_btree.h" 34 #include "xfs_bmap_util.h" 35 #include "xfs_trans.h" 36 #include "xfs_trans_space.h" 37 #include "xfs_qm.h" 38 #include "xfs_trace.h" 39 #include "xfs_icache.h" 40 #include "xfs_cksum.h" 41 42 /* 43 * The global quota manager. There is only one of these for the entire 44 * system, _not_ one per file system. XQM keeps track of the overall 45 * quota functionality, including maintaining the freelist and hash 46 * tables of dquots. 47 */ 48 STATIC int xfs_qm_init_quotainos(xfs_mount_t *); 49 STATIC int xfs_qm_init_quotainfo(xfs_mount_t *); 50 51 STATIC void xfs_qm_destroy_quotainos(xfs_quotainfo_t *qi); 52 STATIC void xfs_qm_dqfree_one(struct xfs_dquot *dqp); 53 /* 54 * We use the batch lookup interface to iterate over the dquots as it 55 * currently is the only interface into the radix tree code that allows 56 * fuzzy lookups instead of exact matches. Holding the lock over multiple 57 * operations is fine as all callers are used either during mount/umount 58 * or quotaoff. 59 */ 60 #define XFS_DQ_LOOKUP_BATCH 32 61 62 STATIC int 63 xfs_qm_dquot_walk( 64 struct xfs_mount *mp, 65 int type, 66 int (*execute)(struct xfs_dquot *dqp, void *data), 67 void *data) 68 { 69 struct xfs_quotainfo *qi = mp->m_quotainfo; 70 struct radix_tree_root *tree = xfs_dquot_tree(qi, type); 71 uint32_t next_index; 72 int last_error = 0; 73 int skipped; 74 int nr_found; 75 76 restart: 77 skipped = 0; 78 next_index = 0; 79 nr_found = 0; 80 81 while (1) { 82 struct xfs_dquot *batch[XFS_DQ_LOOKUP_BATCH]; 83 int error = 0; 84 int i; 85 86 mutex_lock(&qi->qi_tree_lock); 87 nr_found = radix_tree_gang_lookup(tree, (void **)batch, 88 next_index, XFS_DQ_LOOKUP_BATCH); 89 if (!nr_found) { 90 mutex_unlock(&qi->qi_tree_lock); 91 break; 92 } 93 94 for (i = 0; i < nr_found; i++) { 95 struct xfs_dquot *dqp = batch[i]; 96 97 next_index = be32_to_cpu(dqp->q_core.d_id) + 1; 98 99 error = execute(batch[i], data); 100 if (error == -EAGAIN) { 101 skipped++; 102 continue; 103 } 104 if (error && last_error != -EFSCORRUPTED) 105 last_error = error; 106 } 107 108 mutex_unlock(&qi->qi_tree_lock); 109 110 /* bail out if the filesystem is corrupted. */ 111 if (last_error == -EFSCORRUPTED) { 112 skipped = 0; 113 break; 114 } 115 /* we're done if id overflows back to zero */ 116 if (!next_index) 117 break; 118 } 119 120 if (skipped) { 121 delay(1); 122 goto restart; 123 } 124 125 return last_error; 126 } 127 128 129 /* 130 * Purge a dquot from all tracking data structures and free it. 131 */ 132 STATIC int 133 xfs_qm_dqpurge( 134 struct xfs_dquot *dqp, 135 void *data) 136 { 137 struct xfs_mount *mp = dqp->q_mount; 138 struct xfs_quotainfo *qi = mp->m_quotainfo; 139 140 xfs_dqlock(dqp); 141 if ((dqp->dq_flags & XFS_DQ_FREEING) || dqp->q_nrefs != 0) { 142 xfs_dqunlock(dqp); 143 return -EAGAIN; 144 } 145 146 dqp->dq_flags |= XFS_DQ_FREEING; 147 148 xfs_dqflock(dqp); 149 150 /* 151 * If we are turning this type of quotas off, we don't care 152 * about the dirty metadata sitting in this dquot. OTOH, if 153 * we're unmounting, we do care, so we flush it and wait. 154 */ 155 if (XFS_DQ_IS_DIRTY(dqp)) { 156 struct xfs_buf *bp = NULL; 157 int error; 158 159 /* 160 * We don't care about getting disk errors here. We need 161 * to purge this dquot anyway, so we go ahead regardless. 162 */ 163 error = xfs_qm_dqflush(dqp, &bp); 164 if (error) { 165 xfs_warn(mp, "%s: dquot %p flush failed", 166 __func__, dqp); 167 } else { 168 error = xfs_bwrite(bp); 169 xfs_buf_relse(bp); 170 } 171 xfs_dqflock(dqp); 172 } 173 174 ASSERT(atomic_read(&dqp->q_pincount) == 0); 175 ASSERT(XFS_FORCED_SHUTDOWN(mp) || 176 !(dqp->q_logitem.qli_item.li_flags & XFS_LI_IN_AIL)); 177 178 xfs_dqfunlock(dqp); 179 xfs_dqunlock(dqp); 180 181 radix_tree_delete(xfs_dquot_tree(qi, dqp->q_core.d_flags), 182 be32_to_cpu(dqp->q_core.d_id)); 183 qi->qi_dquots--; 184 185 /* 186 * We move dquots to the freelist as soon as their reference count 187 * hits zero, so it really should be on the freelist here. 188 */ 189 ASSERT(!list_empty(&dqp->q_lru)); 190 list_lru_del(&qi->qi_lru, &dqp->q_lru); 191 XFS_STATS_DEC(mp, xs_qm_dquot_unused); 192 193 xfs_qm_dqdestroy(dqp); 194 return 0; 195 } 196 197 /* 198 * Purge the dquot cache. 199 */ 200 void 201 xfs_qm_dqpurge_all( 202 struct xfs_mount *mp, 203 uint flags) 204 { 205 if (flags & XFS_QMOPT_UQUOTA) 206 xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_dqpurge, NULL); 207 if (flags & XFS_QMOPT_GQUOTA) 208 xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_dqpurge, NULL); 209 if (flags & XFS_QMOPT_PQUOTA) 210 xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_dqpurge, NULL); 211 } 212 213 /* 214 * Just destroy the quotainfo structure. 215 */ 216 void 217 xfs_qm_unmount( 218 struct xfs_mount *mp) 219 { 220 if (mp->m_quotainfo) { 221 xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); 222 xfs_qm_destroy_quotainfo(mp); 223 } 224 } 225 226 /* 227 * Called from the vfsops layer. 228 */ 229 void 230 xfs_qm_unmount_quotas( 231 xfs_mount_t *mp) 232 { 233 /* 234 * Release the dquots that root inode, et al might be holding, 235 * before we flush quotas and blow away the quotainfo structure. 236 */ 237 ASSERT(mp->m_rootip); 238 xfs_qm_dqdetach(mp->m_rootip); 239 if (mp->m_rbmip) 240 xfs_qm_dqdetach(mp->m_rbmip); 241 if (mp->m_rsumip) 242 xfs_qm_dqdetach(mp->m_rsumip); 243 244 /* 245 * Release the quota inodes. 246 */ 247 if (mp->m_quotainfo) { 248 if (mp->m_quotainfo->qi_uquotaip) { 249 IRELE(mp->m_quotainfo->qi_uquotaip); 250 mp->m_quotainfo->qi_uquotaip = NULL; 251 } 252 if (mp->m_quotainfo->qi_gquotaip) { 253 IRELE(mp->m_quotainfo->qi_gquotaip); 254 mp->m_quotainfo->qi_gquotaip = NULL; 255 } 256 if (mp->m_quotainfo->qi_pquotaip) { 257 IRELE(mp->m_quotainfo->qi_pquotaip); 258 mp->m_quotainfo->qi_pquotaip = NULL; 259 } 260 } 261 } 262 263 STATIC int 264 xfs_qm_dqattach_one( 265 xfs_inode_t *ip, 266 xfs_dqid_t id, 267 uint type, 268 uint doalloc, 269 xfs_dquot_t **IO_idqpp) 270 { 271 xfs_dquot_t *dqp; 272 int error; 273 274 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 275 error = 0; 276 277 /* 278 * See if we already have it in the inode itself. IO_idqpp is &i_udquot 279 * or &i_gdquot. This made the code look weird, but made the logic a lot 280 * simpler. 281 */ 282 dqp = *IO_idqpp; 283 if (dqp) { 284 trace_xfs_dqattach_found(dqp); 285 return 0; 286 } 287 288 /* 289 * Find the dquot from somewhere. This bumps the reference count of 290 * dquot and returns it locked. This can return ENOENT if dquot didn't 291 * exist on disk and we didn't ask it to allocate; ESRCH if quotas got 292 * turned off suddenly. 293 */ 294 error = xfs_qm_dqget(ip->i_mount, ip, id, type, 295 doalloc | XFS_QMOPT_DOWARN, &dqp); 296 if (error) 297 return error; 298 299 trace_xfs_dqattach_get(dqp); 300 301 /* 302 * dqget may have dropped and re-acquired the ilock, but it guarantees 303 * that the dquot returned is the one that should go in the inode. 304 */ 305 *IO_idqpp = dqp; 306 xfs_dqunlock(dqp); 307 return 0; 308 } 309 310 static bool 311 xfs_qm_need_dqattach( 312 struct xfs_inode *ip) 313 { 314 struct xfs_mount *mp = ip->i_mount; 315 316 if (!XFS_IS_QUOTA_RUNNING(mp)) 317 return false; 318 if (!XFS_IS_QUOTA_ON(mp)) 319 return false; 320 if (!XFS_NOT_DQATTACHED(mp, ip)) 321 return false; 322 if (xfs_is_quota_inode(&mp->m_sb, ip->i_ino)) 323 return false; 324 return true; 325 } 326 327 /* 328 * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON 329 * into account. 330 * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. 331 * Inode may get unlocked and relocked in here, and the caller must deal with 332 * the consequences. 333 */ 334 int 335 xfs_qm_dqattach_locked( 336 xfs_inode_t *ip, 337 uint flags) 338 { 339 xfs_mount_t *mp = ip->i_mount; 340 int error = 0; 341 342 if (!xfs_qm_need_dqattach(ip)) 343 return 0; 344 345 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 346 347 if (XFS_IS_UQUOTA_ON(mp) && !ip->i_udquot) { 348 error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, 349 flags & XFS_QMOPT_DQALLOC, 350 &ip->i_udquot); 351 if (error) 352 goto done; 353 ASSERT(ip->i_udquot); 354 } 355 356 if (XFS_IS_GQUOTA_ON(mp) && !ip->i_gdquot) { 357 error = xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, 358 flags & XFS_QMOPT_DQALLOC, 359 &ip->i_gdquot); 360 if (error) 361 goto done; 362 ASSERT(ip->i_gdquot); 363 } 364 365 if (XFS_IS_PQUOTA_ON(mp) && !ip->i_pdquot) { 366 error = xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ, 367 flags & XFS_QMOPT_DQALLOC, 368 &ip->i_pdquot); 369 if (error) 370 goto done; 371 ASSERT(ip->i_pdquot); 372 } 373 374 done: 375 /* 376 * Don't worry about the dquots that we may have attached before any 377 * error - they'll get detached later if it has not already been done. 378 */ 379 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 380 return error; 381 } 382 383 int 384 xfs_qm_dqattach( 385 struct xfs_inode *ip, 386 uint flags) 387 { 388 int error; 389 390 if (!xfs_qm_need_dqattach(ip)) 391 return 0; 392 393 xfs_ilock(ip, XFS_ILOCK_EXCL); 394 error = xfs_qm_dqattach_locked(ip, flags); 395 xfs_iunlock(ip, XFS_ILOCK_EXCL); 396 397 return error; 398 } 399 400 /* 401 * Release dquots (and their references) if any. 402 * The inode should be locked EXCL except when this's called by 403 * xfs_ireclaim. 404 */ 405 void 406 xfs_qm_dqdetach( 407 xfs_inode_t *ip) 408 { 409 if (!(ip->i_udquot || ip->i_gdquot || ip->i_pdquot)) 410 return; 411 412 trace_xfs_dquot_dqdetach(ip); 413 414 ASSERT(!xfs_is_quota_inode(&ip->i_mount->m_sb, ip->i_ino)); 415 if (ip->i_udquot) { 416 xfs_qm_dqrele(ip->i_udquot); 417 ip->i_udquot = NULL; 418 } 419 if (ip->i_gdquot) { 420 xfs_qm_dqrele(ip->i_gdquot); 421 ip->i_gdquot = NULL; 422 } 423 if (ip->i_pdquot) { 424 xfs_qm_dqrele(ip->i_pdquot); 425 ip->i_pdquot = NULL; 426 } 427 } 428 429 struct xfs_qm_isolate { 430 struct list_head buffers; 431 struct list_head dispose; 432 }; 433 434 static enum lru_status 435 xfs_qm_dquot_isolate( 436 struct list_head *item, 437 struct list_lru_one *lru, 438 spinlock_t *lru_lock, 439 void *arg) 440 __releases(lru_lock) __acquires(lru_lock) 441 { 442 struct xfs_dquot *dqp = container_of(item, 443 struct xfs_dquot, q_lru); 444 struct xfs_qm_isolate *isol = arg; 445 446 if (!xfs_dqlock_nowait(dqp)) 447 goto out_miss_busy; 448 449 /* 450 * This dquot has acquired a reference in the meantime remove it from 451 * the freelist and try again. 452 */ 453 if (dqp->q_nrefs) { 454 xfs_dqunlock(dqp); 455 XFS_STATS_INC(dqp->q_mount, xs_qm_dqwants); 456 457 trace_xfs_dqreclaim_want(dqp); 458 list_lru_isolate(lru, &dqp->q_lru); 459 XFS_STATS_DEC(dqp->q_mount, xs_qm_dquot_unused); 460 return LRU_REMOVED; 461 } 462 463 /* 464 * If the dquot is dirty, flush it. If it's already being flushed, just 465 * skip it so there is time for the IO to complete before we try to 466 * reclaim it again on the next LRU pass. 467 */ 468 if (!xfs_dqflock_nowait(dqp)) { 469 xfs_dqunlock(dqp); 470 goto out_miss_busy; 471 } 472 473 if (XFS_DQ_IS_DIRTY(dqp)) { 474 struct xfs_buf *bp = NULL; 475 int error; 476 477 trace_xfs_dqreclaim_dirty(dqp); 478 479 /* we have to drop the LRU lock to flush the dquot */ 480 spin_unlock(lru_lock); 481 482 error = xfs_qm_dqflush(dqp, &bp); 483 if (error) { 484 xfs_warn(dqp->q_mount, "%s: dquot %p flush failed", 485 __func__, dqp); 486 goto out_unlock_dirty; 487 } 488 489 xfs_buf_delwri_queue(bp, &isol->buffers); 490 xfs_buf_relse(bp); 491 goto out_unlock_dirty; 492 } 493 xfs_dqfunlock(dqp); 494 495 /* 496 * Prevent lookups now that we are past the point of no return. 497 */ 498 dqp->dq_flags |= XFS_DQ_FREEING; 499 xfs_dqunlock(dqp); 500 501 ASSERT(dqp->q_nrefs == 0); 502 list_lru_isolate_move(lru, &dqp->q_lru, &isol->dispose); 503 XFS_STATS_DEC(dqp->q_mount, xs_qm_dquot_unused); 504 trace_xfs_dqreclaim_done(dqp); 505 XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaims); 506 return LRU_REMOVED; 507 508 out_miss_busy: 509 trace_xfs_dqreclaim_busy(dqp); 510 XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaim_misses); 511 return LRU_SKIP; 512 513 out_unlock_dirty: 514 trace_xfs_dqreclaim_busy(dqp); 515 XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaim_misses); 516 xfs_dqunlock(dqp); 517 spin_lock(lru_lock); 518 return LRU_RETRY; 519 } 520 521 static unsigned long 522 xfs_qm_shrink_scan( 523 struct shrinker *shrink, 524 struct shrink_control *sc) 525 { 526 struct xfs_quotainfo *qi = container_of(shrink, 527 struct xfs_quotainfo, qi_shrinker); 528 struct xfs_qm_isolate isol; 529 unsigned long freed; 530 int error; 531 532 if ((sc->gfp_mask & (__GFP_FS|__GFP_DIRECT_RECLAIM)) != (__GFP_FS|__GFP_DIRECT_RECLAIM)) 533 return 0; 534 535 INIT_LIST_HEAD(&isol.buffers); 536 INIT_LIST_HEAD(&isol.dispose); 537 538 freed = list_lru_shrink_walk(&qi->qi_lru, sc, 539 xfs_qm_dquot_isolate, &isol); 540 541 error = xfs_buf_delwri_submit(&isol.buffers); 542 if (error) 543 xfs_warn(NULL, "%s: dquot reclaim failed", __func__); 544 545 while (!list_empty(&isol.dispose)) { 546 struct xfs_dquot *dqp; 547 548 dqp = list_first_entry(&isol.dispose, struct xfs_dquot, q_lru); 549 list_del_init(&dqp->q_lru); 550 xfs_qm_dqfree_one(dqp); 551 } 552 553 return freed; 554 } 555 556 static unsigned long 557 xfs_qm_shrink_count( 558 struct shrinker *shrink, 559 struct shrink_control *sc) 560 { 561 struct xfs_quotainfo *qi = container_of(shrink, 562 struct xfs_quotainfo, qi_shrinker); 563 564 return list_lru_shrink_count(&qi->qi_lru, sc); 565 } 566 567 STATIC void 568 xfs_qm_set_defquota( 569 xfs_mount_t *mp, 570 uint type, 571 xfs_quotainfo_t *qinf) 572 { 573 xfs_dquot_t *dqp; 574 struct xfs_def_quota *defq; 575 int error; 576 577 error = xfs_qm_dqread(mp, 0, type, XFS_QMOPT_DOWARN, &dqp); 578 579 if (!error) { 580 xfs_disk_dquot_t *ddqp = &dqp->q_core; 581 582 defq = xfs_get_defquota(dqp, qinf); 583 584 /* 585 * Timers and warnings have been already set, let's just set the 586 * default limits for this quota type 587 */ 588 defq->bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); 589 defq->bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); 590 defq->ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); 591 defq->isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); 592 defq->rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); 593 defq->rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); 594 xfs_qm_dqdestroy(dqp); 595 } 596 } 597 598 /* 599 * This initializes all the quota information that's kept in the 600 * mount structure 601 */ 602 STATIC int 603 xfs_qm_init_quotainfo( 604 xfs_mount_t *mp) 605 { 606 xfs_quotainfo_t *qinf; 607 int error; 608 xfs_dquot_t *dqp; 609 610 ASSERT(XFS_IS_QUOTA_RUNNING(mp)); 611 612 qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); 613 614 error = list_lru_init(&qinf->qi_lru); 615 if (error) 616 goto out_free_qinf; 617 618 /* 619 * See if quotainodes are setup, and if not, allocate them, 620 * and change the superblock accordingly. 621 */ 622 error = xfs_qm_init_quotainos(mp); 623 if (error) 624 goto out_free_lru; 625 626 INIT_RADIX_TREE(&qinf->qi_uquota_tree, GFP_NOFS); 627 INIT_RADIX_TREE(&qinf->qi_gquota_tree, GFP_NOFS); 628 INIT_RADIX_TREE(&qinf->qi_pquota_tree, GFP_NOFS); 629 mutex_init(&qinf->qi_tree_lock); 630 631 /* mutex used to serialize quotaoffs */ 632 mutex_init(&qinf->qi_quotaofflock); 633 634 /* Precalc some constants */ 635 qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); 636 qinf->qi_dqperchunk = xfs_calc_dquots_per_chunk(qinf->qi_dqchunklen); 637 638 mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); 639 640 /* 641 * We try to get the limits from the superuser's limits fields. 642 * This is quite hacky, but it is standard quota practice. 643 * 644 * Since we may not have done a quotacheck by this point, just read 645 * the dquot without attaching it to any hashtables or lists. 646 * 647 * Timers and warnings are globally set by the first timer found in 648 * user/group/proj quota types, otherwise a default value is used. 649 * This should be split into different fields per quota type. 650 */ 651 error = xfs_qm_dqread(mp, 0, 652 XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : 653 (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : 654 XFS_DQ_PROJ), 655 XFS_QMOPT_DOWARN, &dqp); 656 657 if (!error) { 658 xfs_disk_dquot_t *ddqp = &dqp->q_core; 659 660 /* 661 * The warnings and timers set the grace period given to 662 * a user or group before he or she can not perform any 663 * more writing. If it is zero, a default is used. 664 */ 665 qinf->qi_btimelimit = ddqp->d_btimer ? 666 be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; 667 qinf->qi_itimelimit = ddqp->d_itimer ? 668 be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; 669 qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? 670 be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; 671 qinf->qi_bwarnlimit = ddqp->d_bwarns ? 672 be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; 673 qinf->qi_iwarnlimit = ddqp->d_iwarns ? 674 be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; 675 qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? 676 be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; 677 xfs_qm_dqdestroy(dqp); 678 } else { 679 qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; 680 qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; 681 qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; 682 qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; 683 qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; 684 qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; 685 } 686 687 if (XFS_IS_UQUOTA_RUNNING(mp)) 688 xfs_qm_set_defquota(mp, XFS_DQ_USER, qinf); 689 if (XFS_IS_GQUOTA_RUNNING(mp)) 690 xfs_qm_set_defquota(mp, XFS_DQ_GROUP, qinf); 691 if (XFS_IS_PQUOTA_RUNNING(mp)) 692 xfs_qm_set_defquota(mp, XFS_DQ_PROJ, qinf); 693 694 qinf->qi_shrinker.count_objects = xfs_qm_shrink_count; 695 qinf->qi_shrinker.scan_objects = xfs_qm_shrink_scan; 696 qinf->qi_shrinker.seeks = DEFAULT_SEEKS; 697 qinf->qi_shrinker.flags = SHRINKER_NUMA_AWARE; 698 699 error = register_shrinker(&qinf->qi_shrinker); 700 if (error) 701 goto out_free_inos; 702 703 return 0; 704 705 out_free_inos: 706 mutex_destroy(&qinf->qi_quotaofflock); 707 mutex_destroy(&qinf->qi_tree_lock); 708 xfs_qm_destroy_quotainos(qinf); 709 out_free_lru: 710 list_lru_destroy(&qinf->qi_lru); 711 out_free_qinf: 712 kmem_free(qinf); 713 mp->m_quotainfo = NULL; 714 return error; 715 } 716 717 /* 718 * Gets called when unmounting a filesystem or when all quotas get 719 * turned off. 720 * This purges the quota inodes, destroys locks and frees itself. 721 */ 722 void 723 xfs_qm_destroy_quotainfo( 724 xfs_mount_t *mp) 725 { 726 xfs_quotainfo_t *qi; 727 728 qi = mp->m_quotainfo; 729 ASSERT(qi != NULL); 730 731 unregister_shrinker(&qi->qi_shrinker); 732 list_lru_destroy(&qi->qi_lru); 733 xfs_qm_destroy_quotainos(qi); 734 mutex_destroy(&qi->qi_tree_lock); 735 mutex_destroy(&qi->qi_quotaofflock); 736 kmem_free(qi); 737 mp->m_quotainfo = NULL; 738 } 739 740 /* 741 * Create an inode and return with a reference already taken, but unlocked 742 * This is how we create quota inodes 743 */ 744 STATIC int 745 xfs_qm_qino_alloc( 746 xfs_mount_t *mp, 747 xfs_inode_t **ip, 748 uint flags) 749 { 750 xfs_trans_t *tp; 751 int error; 752 int committed; 753 bool need_alloc = true; 754 755 *ip = NULL; 756 /* 757 * With superblock that doesn't have separate pquotino, we 758 * share an inode between gquota and pquota. If the on-disk 759 * superblock has GQUOTA and the filesystem is now mounted 760 * with PQUOTA, just use sb_gquotino for sb_pquotino and 761 * vice-versa. 762 */ 763 if (!xfs_sb_version_has_pquotino(&mp->m_sb) && 764 (flags & (XFS_QMOPT_PQUOTA|XFS_QMOPT_GQUOTA))) { 765 xfs_ino_t ino = NULLFSINO; 766 767 if ((flags & XFS_QMOPT_PQUOTA) && 768 (mp->m_sb.sb_gquotino != NULLFSINO)) { 769 ino = mp->m_sb.sb_gquotino; 770 ASSERT(mp->m_sb.sb_pquotino == NULLFSINO); 771 } else if ((flags & XFS_QMOPT_GQUOTA) && 772 (mp->m_sb.sb_pquotino != NULLFSINO)) { 773 ino = mp->m_sb.sb_pquotino; 774 ASSERT(mp->m_sb.sb_gquotino == NULLFSINO); 775 } 776 if (ino != NULLFSINO) { 777 error = xfs_iget(mp, NULL, ino, 0, 0, ip); 778 if (error) 779 return error; 780 mp->m_sb.sb_gquotino = NULLFSINO; 781 mp->m_sb.sb_pquotino = NULLFSINO; 782 need_alloc = false; 783 } 784 } 785 786 error = xfs_trans_alloc(mp, &M_RES(mp)->tr_create, 787 XFS_QM_QINOCREATE_SPACE_RES(mp), 0, 0, &tp); 788 if (error) 789 return error; 790 791 if (need_alloc) { 792 error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, ip, 793 &committed); 794 if (error) { 795 xfs_trans_cancel(tp); 796 return error; 797 } 798 } 799 800 /* 801 * Make the changes in the superblock, and log those too. 802 * sbfields arg may contain fields other than *QUOTINO; 803 * VERSIONNUM for example. 804 */ 805 spin_lock(&mp->m_sb_lock); 806 if (flags & XFS_QMOPT_SBVERSION) { 807 ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); 808 809 xfs_sb_version_addquota(&mp->m_sb); 810 mp->m_sb.sb_uquotino = NULLFSINO; 811 mp->m_sb.sb_gquotino = NULLFSINO; 812 mp->m_sb.sb_pquotino = NULLFSINO; 813 814 /* qflags will get updated fully _after_ quotacheck */ 815 mp->m_sb.sb_qflags = mp->m_qflags & XFS_ALL_QUOTA_ACCT; 816 } 817 if (flags & XFS_QMOPT_UQUOTA) 818 mp->m_sb.sb_uquotino = (*ip)->i_ino; 819 else if (flags & XFS_QMOPT_GQUOTA) 820 mp->m_sb.sb_gquotino = (*ip)->i_ino; 821 else 822 mp->m_sb.sb_pquotino = (*ip)->i_ino; 823 spin_unlock(&mp->m_sb_lock); 824 xfs_log_sb(tp); 825 826 error = xfs_trans_commit(tp); 827 if (error) { 828 ASSERT(XFS_FORCED_SHUTDOWN(mp)); 829 xfs_alert(mp, "%s failed (error %d)!", __func__, error); 830 } 831 if (need_alloc) 832 xfs_finish_inode_setup(*ip); 833 return error; 834 } 835 836 837 STATIC void 838 xfs_qm_reset_dqcounts( 839 xfs_mount_t *mp, 840 xfs_buf_t *bp, 841 xfs_dqid_t id, 842 uint type) 843 { 844 struct xfs_dqblk *dqb; 845 int j; 846 847 trace_xfs_reset_dqcounts(bp, _RET_IP_); 848 849 /* 850 * Reset all counters and timers. They'll be 851 * started afresh by xfs_qm_quotacheck. 852 */ 853 #ifdef DEBUG 854 j = (int)XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB) / 855 sizeof(xfs_dqblk_t); 856 ASSERT(mp->m_quotainfo->qi_dqperchunk == j); 857 #endif 858 dqb = bp->b_addr; 859 for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { 860 struct xfs_disk_dquot *ddq; 861 862 ddq = (struct xfs_disk_dquot *)&dqb[j]; 863 864 /* 865 * Do a sanity check, and if needed, repair the dqblk. Don't 866 * output any warnings because it's perfectly possible to 867 * find uninitialised dquot blks. See comment in xfs_dqcheck. 868 */ 869 xfs_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR, 870 "xfs_quotacheck"); 871 /* 872 * Reset type in case we are reusing group quota file for 873 * project quotas or vice versa 874 */ 875 ddq->d_flags = type; 876 ddq->d_bcount = 0; 877 ddq->d_icount = 0; 878 ddq->d_rtbcount = 0; 879 ddq->d_btimer = 0; 880 ddq->d_itimer = 0; 881 ddq->d_rtbtimer = 0; 882 ddq->d_bwarns = 0; 883 ddq->d_iwarns = 0; 884 ddq->d_rtbwarns = 0; 885 886 if (xfs_sb_version_hascrc(&mp->m_sb)) { 887 xfs_update_cksum((char *)&dqb[j], 888 sizeof(struct xfs_dqblk), 889 XFS_DQUOT_CRC_OFF); 890 } 891 } 892 } 893 894 STATIC int 895 xfs_qm_dqiter_bufs( 896 struct xfs_mount *mp, 897 xfs_dqid_t firstid, 898 xfs_fsblock_t bno, 899 xfs_filblks_t blkcnt, 900 uint flags, 901 struct list_head *buffer_list) 902 { 903 struct xfs_buf *bp; 904 int error; 905 int type; 906 907 ASSERT(blkcnt > 0); 908 type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : 909 (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); 910 error = 0; 911 912 /* 913 * Blkcnt arg can be a very big number, and might even be 914 * larger than the log itself. So, we have to break it up into 915 * manageable-sized transactions. 916 * Note that we don't start a permanent transaction here; we might 917 * not be able to get a log reservation for the whole thing up front, 918 * and we don't really care to either, because we just discard 919 * everything if we were to crash in the middle of this loop. 920 */ 921 while (blkcnt--) { 922 error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, 923 XFS_FSB_TO_DADDR(mp, bno), 924 mp->m_quotainfo->qi_dqchunklen, 0, &bp, 925 &xfs_dquot_buf_ops); 926 927 /* 928 * CRC and validation errors will return a EFSCORRUPTED here. If 929 * this occurs, re-read without CRC validation so that we can 930 * repair the damage via xfs_qm_reset_dqcounts(). This process 931 * will leave a trace in the log indicating corruption has 932 * been detected. 933 */ 934 if (error == -EFSCORRUPTED) { 935 error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, 936 XFS_FSB_TO_DADDR(mp, bno), 937 mp->m_quotainfo->qi_dqchunklen, 0, &bp, 938 NULL); 939 } 940 941 if (error) 942 break; 943 944 /* 945 * A corrupt buffer might not have a verifier attached, so 946 * make sure we have the correct one attached before writeback 947 * occurs. 948 */ 949 bp->b_ops = &xfs_dquot_buf_ops; 950 xfs_qm_reset_dqcounts(mp, bp, firstid, type); 951 xfs_buf_delwri_queue(bp, buffer_list); 952 xfs_buf_relse(bp); 953 954 /* goto the next block. */ 955 bno++; 956 firstid += mp->m_quotainfo->qi_dqperchunk; 957 } 958 959 return error; 960 } 961 962 /* 963 * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a 964 * caller supplied function for every chunk of dquots that we find. 965 */ 966 STATIC int 967 xfs_qm_dqiterate( 968 struct xfs_mount *mp, 969 struct xfs_inode *qip, 970 uint flags, 971 struct list_head *buffer_list) 972 { 973 struct xfs_bmbt_irec *map; 974 int i, nmaps; /* number of map entries */ 975 int error; /* return value */ 976 xfs_fileoff_t lblkno; 977 xfs_filblks_t maxlblkcnt; 978 xfs_dqid_t firstid; 979 xfs_fsblock_t rablkno; 980 xfs_filblks_t rablkcnt; 981 982 error = 0; 983 /* 984 * This looks racy, but we can't keep an inode lock across a 985 * trans_reserve. But, this gets called during quotacheck, and that 986 * happens only at mount time which is single threaded. 987 */ 988 if (qip->i_d.di_nblocks == 0) 989 return 0; 990 991 map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); 992 993 lblkno = 0; 994 maxlblkcnt = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes); 995 do { 996 uint lock_mode; 997 998 nmaps = XFS_DQITER_MAP_SIZE; 999 /* 1000 * We aren't changing the inode itself. Just changing 1001 * some of its data. No new blocks are added here, and 1002 * the inode is never added to the transaction. 1003 */ 1004 lock_mode = xfs_ilock_data_map_shared(qip); 1005 error = xfs_bmapi_read(qip, lblkno, maxlblkcnt - lblkno, 1006 map, &nmaps, 0); 1007 xfs_iunlock(qip, lock_mode); 1008 if (error) 1009 break; 1010 1011 ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); 1012 for (i = 0; i < nmaps; i++) { 1013 ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); 1014 ASSERT(map[i].br_blockcount); 1015 1016 1017 lblkno += map[i].br_blockcount; 1018 1019 if (map[i].br_startblock == HOLESTARTBLOCK) 1020 continue; 1021 1022 firstid = (xfs_dqid_t) map[i].br_startoff * 1023 mp->m_quotainfo->qi_dqperchunk; 1024 /* 1025 * Do a read-ahead on the next extent. 1026 */ 1027 if ((i+1 < nmaps) && 1028 (map[i+1].br_startblock != HOLESTARTBLOCK)) { 1029 rablkcnt = map[i+1].br_blockcount; 1030 rablkno = map[i+1].br_startblock; 1031 while (rablkcnt--) { 1032 xfs_buf_readahead(mp->m_ddev_targp, 1033 XFS_FSB_TO_DADDR(mp, rablkno), 1034 mp->m_quotainfo->qi_dqchunklen, 1035 &xfs_dquot_buf_ops); 1036 rablkno++; 1037 } 1038 } 1039 /* 1040 * Iterate thru all the blks in the extent and 1041 * reset the counters of all the dquots inside them. 1042 */ 1043 error = xfs_qm_dqiter_bufs(mp, firstid, 1044 map[i].br_startblock, 1045 map[i].br_blockcount, 1046 flags, buffer_list); 1047 if (error) 1048 goto out; 1049 } 1050 } while (nmaps > 0); 1051 1052 out: 1053 kmem_free(map); 1054 return error; 1055 } 1056 1057 /* 1058 * Called by dqusage_adjust in doing a quotacheck. 1059 * 1060 * Given the inode, and a dquot id this updates both the incore dqout as well 1061 * as the buffer copy. This is so that once the quotacheck is done, we can 1062 * just log all the buffers, as opposed to logging numerous updates to 1063 * individual dquots. 1064 */ 1065 STATIC int 1066 xfs_qm_quotacheck_dqadjust( 1067 struct xfs_inode *ip, 1068 xfs_dqid_t id, 1069 uint type, 1070 xfs_qcnt_t nblks, 1071 xfs_qcnt_t rtblks) 1072 { 1073 struct xfs_mount *mp = ip->i_mount; 1074 struct xfs_dquot *dqp; 1075 int error; 1076 1077 error = xfs_qm_dqget(mp, ip, id, type, 1078 XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp); 1079 if (error) { 1080 /* 1081 * Shouldn't be able to turn off quotas here. 1082 */ 1083 ASSERT(error != -ESRCH); 1084 ASSERT(error != -ENOENT); 1085 return error; 1086 } 1087 1088 trace_xfs_dqadjust(dqp); 1089 1090 /* 1091 * Adjust the inode count and the block count to reflect this inode's 1092 * resource usage. 1093 */ 1094 be64_add_cpu(&dqp->q_core.d_icount, 1); 1095 dqp->q_res_icount++; 1096 if (nblks) { 1097 be64_add_cpu(&dqp->q_core.d_bcount, nblks); 1098 dqp->q_res_bcount += nblks; 1099 } 1100 if (rtblks) { 1101 be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); 1102 dqp->q_res_rtbcount += rtblks; 1103 } 1104 1105 /* 1106 * Set default limits, adjust timers (since we changed usages) 1107 * 1108 * There are no timers for the default values set in the root dquot. 1109 */ 1110 if (dqp->q_core.d_id) { 1111 xfs_qm_adjust_dqlimits(mp, dqp); 1112 xfs_qm_adjust_dqtimers(mp, &dqp->q_core); 1113 } 1114 1115 dqp->dq_flags |= XFS_DQ_DIRTY; 1116 xfs_qm_dqput(dqp); 1117 return 0; 1118 } 1119 1120 /* 1121 * callback routine supplied to bulkstat(). Given an inumber, find its 1122 * dquots and update them to account for resources taken by that inode. 1123 */ 1124 /* ARGSUSED */ 1125 STATIC int 1126 xfs_qm_dqusage_adjust( 1127 xfs_mount_t *mp, /* mount point for filesystem */ 1128 xfs_ino_t ino, /* inode number to get data for */ 1129 void __user *buffer, /* not used */ 1130 int ubsize, /* not used */ 1131 int *ubused, /* not used */ 1132 int *res) /* result code value */ 1133 { 1134 xfs_inode_t *ip; 1135 xfs_qcnt_t nblks; 1136 xfs_filblks_t rtblks = 0; /* total rt blks */ 1137 int error; 1138 1139 ASSERT(XFS_IS_QUOTA_RUNNING(mp)); 1140 1141 /* 1142 * rootino must have its resources accounted for, not so with the quota 1143 * inodes. 1144 */ 1145 if (xfs_is_quota_inode(&mp->m_sb, ino)) { 1146 *res = BULKSTAT_RV_NOTHING; 1147 return -EINVAL; 1148 } 1149 1150 /* 1151 * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget 1152 * interface expects the inode to be exclusively locked because that's 1153 * the case in all other instances. It's OK that we do this because 1154 * quotacheck is done only at mount time. 1155 */ 1156 error = xfs_iget(mp, NULL, ino, XFS_IGET_DONTCACHE, XFS_ILOCK_EXCL, 1157 &ip); 1158 if (error) { 1159 *res = BULKSTAT_RV_NOTHING; 1160 return error; 1161 } 1162 1163 ASSERT(ip->i_delayed_blks == 0); 1164 1165 if (XFS_IS_REALTIME_INODE(ip)) { 1166 struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); 1167 1168 if (!(ifp->if_flags & XFS_IFEXTENTS)) { 1169 error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK); 1170 if (error) 1171 goto error0; 1172 } 1173 1174 xfs_bmap_count_leaves(ifp, &rtblks); 1175 } 1176 1177 nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; 1178 1179 /* 1180 * Add the (disk blocks and inode) resources occupied by this 1181 * inode to its dquots. We do this adjustment in the incore dquot, 1182 * and also copy the changes to its buffer. 1183 * We don't care about putting these changes in a transaction 1184 * envelope because if we crash in the middle of a 'quotacheck' 1185 * we have to start from the beginning anyway. 1186 * Once we're done, we'll log all the dquot bufs. 1187 * 1188 * The *QUOTA_ON checks below may look pretty racy, but quotachecks 1189 * and quotaoffs don't race. (Quotachecks happen at mount time only). 1190 */ 1191 if (XFS_IS_UQUOTA_ON(mp)) { 1192 error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid, 1193 XFS_DQ_USER, nblks, rtblks); 1194 if (error) 1195 goto error0; 1196 } 1197 1198 if (XFS_IS_GQUOTA_ON(mp)) { 1199 error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid, 1200 XFS_DQ_GROUP, nblks, rtblks); 1201 if (error) 1202 goto error0; 1203 } 1204 1205 if (XFS_IS_PQUOTA_ON(mp)) { 1206 error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip), 1207 XFS_DQ_PROJ, nblks, rtblks); 1208 if (error) 1209 goto error0; 1210 } 1211 1212 xfs_iunlock(ip, XFS_ILOCK_EXCL); 1213 IRELE(ip); 1214 *res = BULKSTAT_RV_DIDONE; 1215 return 0; 1216 1217 error0: 1218 xfs_iunlock(ip, XFS_ILOCK_EXCL); 1219 IRELE(ip); 1220 *res = BULKSTAT_RV_GIVEUP; 1221 return error; 1222 } 1223 1224 STATIC int 1225 xfs_qm_flush_one( 1226 struct xfs_dquot *dqp, 1227 void *data) 1228 { 1229 struct xfs_mount *mp = dqp->q_mount; 1230 struct list_head *buffer_list = data; 1231 struct xfs_buf *bp = NULL; 1232 int error = 0; 1233 1234 xfs_dqlock(dqp); 1235 if (dqp->dq_flags & XFS_DQ_FREEING) 1236 goto out_unlock; 1237 if (!XFS_DQ_IS_DIRTY(dqp)) 1238 goto out_unlock; 1239 1240 /* 1241 * The only way the dquot is already flush locked by the time quotacheck 1242 * gets here is if reclaim flushed it before the dqadjust walk dirtied 1243 * it for the final time. Quotacheck collects all dquot bufs in the 1244 * local delwri queue before dquots are dirtied, so reclaim can't have 1245 * possibly queued it for I/O. The only way out is to push the buffer to 1246 * cycle the flush lock. 1247 */ 1248 if (!xfs_dqflock_nowait(dqp)) { 1249 /* buf is pinned in-core by delwri list */ 1250 DEFINE_SINGLE_BUF_MAP(map, dqp->q_blkno, 1251 mp->m_quotainfo->qi_dqchunklen); 1252 bp = _xfs_buf_find(mp->m_ddev_targp, &map, 1, 0, NULL); 1253 if (!bp) { 1254 error = -EINVAL; 1255 goto out_unlock; 1256 } 1257 xfs_buf_unlock(bp); 1258 1259 xfs_buf_delwri_pushbuf(bp, buffer_list); 1260 xfs_buf_rele(bp); 1261 1262 error = -EAGAIN; 1263 goto out_unlock; 1264 } 1265 1266 error = xfs_qm_dqflush(dqp, &bp); 1267 if (error) 1268 goto out_unlock; 1269 1270 xfs_buf_delwri_queue(bp, buffer_list); 1271 xfs_buf_relse(bp); 1272 out_unlock: 1273 xfs_dqunlock(dqp); 1274 return error; 1275 } 1276 1277 /* 1278 * Walk thru all the filesystem inodes and construct a consistent view 1279 * of the disk quota world. If the quotacheck fails, disable quotas. 1280 */ 1281 STATIC int 1282 xfs_qm_quotacheck( 1283 xfs_mount_t *mp) 1284 { 1285 int done, count, error, error2; 1286 xfs_ino_t lastino; 1287 size_t structsz; 1288 uint flags; 1289 LIST_HEAD (buffer_list); 1290 struct xfs_inode *uip = mp->m_quotainfo->qi_uquotaip; 1291 struct xfs_inode *gip = mp->m_quotainfo->qi_gquotaip; 1292 struct xfs_inode *pip = mp->m_quotainfo->qi_pquotaip; 1293 1294 count = INT_MAX; 1295 structsz = 1; 1296 lastino = 0; 1297 flags = 0; 1298 1299 ASSERT(uip || gip || pip); 1300 ASSERT(XFS_IS_QUOTA_RUNNING(mp)); 1301 1302 xfs_notice(mp, "Quotacheck needed: Please wait."); 1303 1304 /* 1305 * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset 1306 * their counters to zero. We need a clean slate. 1307 * We don't log our changes till later. 1308 */ 1309 if (uip) { 1310 error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA, 1311 &buffer_list); 1312 if (error) 1313 goto error_return; 1314 flags |= XFS_UQUOTA_CHKD; 1315 } 1316 1317 if (gip) { 1318 error = xfs_qm_dqiterate(mp, gip, XFS_QMOPT_GQUOTA, 1319 &buffer_list); 1320 if (error) 1321 goto error_return; 1322 flags |= XFS_GQUOTA_CHKD; 1323 } 1324 1325 if (pip) { 1326 error = xfs_qm_dqiterate(mp, pip, XFS_QMOPT_PQUOTA, 1327 &buffer_list); 1328 if (error) 1329 goto error_return; 1330 flags |= XFS_PQUOTA_CHKD; 1331 } 1332 1333 do { 1334 /* 1335 * Iterate thru all the inodes in the file system, 1336 * adjusting the corresponding dquot counters in core. 1337 */ 1338 error = xfs_bulkstat(mp, &lastino, &count, 1339 xfs_qm_dqusage_adjust, 1340 structsz, NULL, &done); 1341 if (error) 1342 break; 1343 1344 } while (!done); 1345 1346 /* 1347 * We've made all the changes that we need to make incore. Flush them 1348 * down to disk buffers if everything was updated successfully. 1349 */ 1350 if (XFS_IS_UQUOTA_ON(mp)) { 1351 error = xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_flush_one, 1352 &buffer_list); 1353 } 1354 if (XFS_IS_GQUOTA_ON(mp)) { 1355 error2 = xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_flush_one, 1356 &buffer_list); 1357 if (!error) 1358 error = error2; 1359 } 1360 if (XFS_IS_PQUOTA_ON(mp)) { 1361 error2 = xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_flush_one, 1362 &buffer_list); 1363 if (!error) 1364 error = error2; 1365 } 1366 1367 error2 = xfs_buf_delwri_submit(&buffer_list); 1368 if (!error) 1369 error = error2; 1370 1371 /* 1372 * We can get this error if we couldn't do a dquot allocation inside 1373 * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the 1374 * dirty dquots that might be cached, we just want to get rid of them 1375 * and turn quotaoff. The dquots won't be attached to any of the inodes 1376 * at this point (because we intentionally didn't in dqget_noattach). 1377 */ 1378 if (error) { 1379 xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); 1380 goto error_return; 1381 } 1382 1383 /* 1384 * If one type of quotas is off, then it will lose its 1385 * quotachecked status, since we won't be doing accounting for 1386 * that type anymore. 1387 */ 1388 mp->m_qflags &= ~XFS_ALL_QUOTA_CHKD; 1389 mp->m_qflags |= flags; 1390 1391 error_return: 1392 xfs_buf_delwri_cancel(&buffer_list); 1393 1394 if (error) { 1395 xfs_warn(mp, 1396 "Quotacheck: Unsuccessful (Error %d): Disabling quotas.", 1397 error); 1398 /* 1399 * We must turn off quotas. 1400 */ 1401 ASSERT(mp->m_quotainfo != NULL); 1402 xfs_qm_destroy_quotainfo(mp); 1403 if (xfs_mount_reset_sbqflags(mp)) { 1404 xfs_warn(mp, 1405 "Quotacheck: Failed to reset quota flags."); 1406 } 1407 } else 1408 xfs_notice(mp, "Quotacheck: Done."); 1409 return error; 1410 } 1411 1412 /* 1413 * This is called from xfs_mountfs to start quotas and initialize all 1414 * necessary data structures like quotainfo. This is also responsible for 1415 * running a quotacheck as necessary. We are guaranteed that the superblock 1416 * is consistently read in at this point. 1417 * 1418 * If we fail here, the mount will continue with quota turned off. We don't 1419 * need to inidicate success or failure at all. 1420 */ 1421 void 1422 xfs_qm_mount_quotas( 1423 struct xfs_mount *mp) 1424 { 1425 int error = 0; 1426 uint sbf; 1427 1428 /* 1429 * If quotas on realtime volumes is not supported, we disable 1430 * quotas immediately. 1431 */ 1432 if (mp->m_sb.sb_rextents) { 1433 xfs_notice(mp, "Cannot turn on quotas for realtime filesystem"); 1434 mp->m_qflags = 0; 1435 goto write_changes; 1436 } 1437 1438 ASSERT(XFS_IS_QUOTA_RUNNING(mp)); 1439 1440 /* 1441 * Allocate the quotainfo structure inside the mount struct, and 1442 * create quotainode(s), and change/rev superblock if necessary. 1443 */ 1444 error = xfs_qm_init_quotainfo(mp); 1445 if (error) { 1446 /* 1447 * We must turn off quotas. 1448 */ 1449 ASSERT(mp->m_quotainfo == NULL); 1450 mp->m_qflags = 0; 1451 goto write_changes; 1452 } 1453 /* 1454 * If any of the quotas are not consistent, do a quotacheck. 1455 */ 1456 if (XFS_QM_NEED_QUOTACHECK(mp)) { 1457 error = xfs_qm_quotacheck(mp); 1458 if (error) { 1459 /* Quotacheck failed and disabled quotas. */ 1460 return; 1461 } 1462 } 1463 /* 1464 * If one type of quotas is off, then it will lose its 1465 * quotachecked status, since we won't be doing accounting for 1466 * that type anymore. 1467 */ 1468 if (!XFS_IS_UQUOTA_ON(mp)) 1469 mp->m_qflags &= ~XFS_UQUOTA_CHKD; 1470 if (!XFS_IS_GQUOTA_ON(mp)) 1471 mp->m_qflags &= ~XFS_GQUOTA_CHKD; 1472 if (!XFS_IS_PQUOTA_ON(mp)) 1473 mp->m_qflags &= ~XFS_PQUOTA_CHKD; 1474 1475 write_changes: 1476 /* 1477 * We actually don't have to acquire the m_sb_lock at all. 1478 * This can only be called from mount, and that's single threaded. XXX 1479 */ 1480 spin_lock(&mp->m_sb_lock); 1481 sbf = mp->m_sb.sb_qflags; 1482 mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL; 1483 spin_unlock(&mp->m_sb_lock); 1484 1485 if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { 1486 if (xfs_sync_sb(mp, false)) { 1487 /* 1488 * We could only have been turning quotas off. 1489 * We aren't in very good shape actually because 1490 * the incore structures are convinced that quotas are 1491 * off, but the on disk superblock doesn't know that ! 1492 */ 1493 ASSERT(!(XFS_IS_QUOTA_RUNNING(mp))); 1494 xfs_alert(mp, "%s: Superblock update failed!", 1495 __func__); 1496 } 1497 } 1498 1499 if (error) { 1500 xfs_warn(mp, "Failed to initialize disk quotas."); 1501 return; 1502 } 1503 } 1504 1505 /* 1506 * This is called after the superblock has been read in and we're ready to 1507 * iget the quota inodes. 1508 */ 1509 STATIC int 1510 xfs_qm_init_quotainos( 1511 xfs_mount_t *mp) 1512 { 1513 struct xfs_inode *uip = NULL; 1514 struct xfs_inode *gip = NULL; 1515 struct xfs_inode *pip = NULL; 1516 int error; 1517 uint flags = 0; 1518 1519 ASSERT(mp->m_quotainfo); 1520 1521 /* 1522 * Get the uquota and gquota inodes 1523 */ 1524 if (xfs_sb_version_hasquota(&mp->m_sb)) { 1525 if (XFS_IS_UQUOTA_ON(mp) && 1526 mp->m_sb.sb_uquotino != NULLFSINO) { 1527 ASSERT(mp->m_sb.sb_uquotino > 0); 1528 error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, 1529 0, 0, &uip); 1530 if (error) 1531 return error; 1532 } 1533 if (XFS_IS_GQUOTA_ON(mp) && 1534 mp->m_sb.sb_gquotino != NULLFSINO) { 1535 ASSERT(mp->m_sb.sb_gquotino > 0); 1536 error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, 1537 0, 0, &gip); 1538 if (error) 1539 goto error_rele; 1540 } 1541 if (XFS_IS_PQUOTA_ON(mp) && 1542 mp->m_sb.sb_pquotino != NULLFSINO) { 1543 ASSERT(mp->m_sb.sb_pquotino > 0); 1544 error = xfs_iget(mp, NULL, mp->m_sb.sb_pquotino, 1545 0, 0, &pip); 1546 if (error) 1547 goto error_rele; 1548 } 1549 } else { 1550 flags |= XFS_QMOPT_SBVERSION; 1551 } 1552 1553 /* 1554 * Create the three inodes, if they don't exist already. The changes 1555 * made above will get added to a transaction and logged in one of 1556 * the qino_alloc calls below. If the device is readonly, 1557 * temporarily switch to read-write to do this. 1558 */ 1559 if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { 1560 error = xfs_qm_qino_alloc(mp, &uip, 1561 flags | XFS_QMOPT_UQUOTA); 1562 if (error) 1563 goto error_rele; 1564 1565 flags &= ~XFS_QMOPT_SBVERSION; 1566 } 1567 if (XFS_IS_GQUOTA_ON(mp) && gip == NULL) { 1568 error = xfs_qm_qino_alloc(mp, &gip, 1569 flags | XFS_QMOPT_GQUOTA); 1570 if (error) 1571 goto error_rele; 1572 1573 flags &= ~XFS_QMOPT_SBVERSION; 1574 } 1575 if (XFS_IS_PQUOTA_ON(mp) && pip == NULL) { 1576 error = xfs_qm_qino_alloc(mp, &pip, 1577 flags | XFS_QMOPT_PQUOTA); 1578 if (error) 1579 goto error_rele; 1580 } 1581 1582 mp->m_quotainfo->qi_uquotaip = uip; 1583 mp->m_quotainfo->qi_gquotaip = gip; 1584 mp->m_quotainfo->qi_pquotaip = pip; 1585 1586 return 0; 1587 1588 error_rele: 1589 if (uip) 1590 IRELE(uip); 1591 if (gip) 1592 IRELE(gip); 1593 if (pip) 1594 IRELE(pip); 1595 return error; 1596 } 1597 1598 STATIC void 1599 xfs_qm_destroy_quotainos( 1600 xfs_quotainfo_t *qi) 1601 { 1602 if (qi->qi_uquotaip) { 1603 IRELE(qi->qi_uquotaip); 1604 qi->qi_uquotaip = NULL; /* paranoia */ 1605 } 1606 if (qi->qi_gquotaip) { 1607 IRELE(qi->qi_gquotaip); 1608 qi->qi_gquotaip = NULL; 1609 } 1610 if (qi->qi_pquotaip) { 1611 IRELE(qi->qi_pquotaip); 1612 qi->qi_pquotaip = NULL; 1613 } 1614 } 1615 1616 STATIC void 1617 xfs_qm_dqfree_one( 1618 struct xfs_dquot *dqp) 1619 { 1620 struct xfs_mount *mp = dqp->q_mount; 1621 struct xfs_quotainfo *qi = mp->m_quotainfo; 1622 1623 mutex_lock(&qi->qi_tree_lock); 1624 radix_tree_delete(xfs_dquot_tree(qi, dqp->q_core.d_flags), 1625 be32_to_cpu(dqp->q_core.d_id)); 1626 1627 qi->qi_dquots--; 1628 mutex_unlock(&qi->qi_tree_lock); 1629 1630 xfs_qm_dqdestroy(dqp); 1631 } 1632 1633 /* --------------- utility functions for vnodeops ---------------- */ 1634 1635 1636 /* 1637 * Given an inode, a uid, gid and prid make sure that we have 1638 * allocated relevant dquot(s) on disk, and that we won't exceed inode 1639 * quotas by creating this file. 1640 * This also attaches dquot(s) to the given inode after locking it, 1641 * and returns the dquots corresponding to the uid and/or gid. 1642 * 1643 * in : inode (unlocked) 1644 * out : udquot, gdquot with references taken and unlocked 1645 */ 1646 int 1647 xfs_qm_vop_dqalloc( 1648 struct xfs_inode *ip, 1649 xfs_dqid_t uid, 1650 xfs_dqid_t gid, 1651 prid_t prid, 1652 uint flags, 1653 struct xfs_dquot **O_udqpp, 1654 struct xfs_dquot **O_gdqpp, 1655 struct xfs_dquot **O_pdqpp) 1656 { 1657 struct xfs_mount *mp = ip->i_mount; 1658 struct xfs_dquot *uq = NULL; 1659 struct xfs_dquot *gq = NULL; 1660 struct xfs_dquot *pq = NULL; 1661 int error; 1662 uint lockflags; 1663 1664 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) 1665 return 0; 1666 1667 lockflags = XFS_ILOCK_EXCL; 1668 xfs_ilock(ip, lockflags); 1669 1670 if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) 1671 gid = ip->i_d.di_gid; 1672 1673 /* 1674 * Attach the dquot(s) to this inode, doing a dquot allocation 1675 * if necessary. The dquot(s) will not be locked. 1676 */ 1677 if (XFS_NOT_DQATTACHED(mp, ip)) { 1678 error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); 1679 if (error) { 1680 xfs_iunlock(ip, lockflags); 1681 return error; 1682 } 1683 } 1684 1685 if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { 1686 if (ip->i_d.di_uid != uid) { 1687 /* 1688 * What we need is the dquot that has this uid, and 1689 * if we send the inode to dqget, the uid of the inode 1690 * takes priority over what's sent in the uid argument. 1691 * We must unlock inode here before calling dqget if 1692 * we're not sending the inode, because otherwise 1693 * we'll deadlock by doing trans_reserve while 1694 * holding ilock. 1695 */ 1696 xfs_iunlock(ip, lockflags); 1697 error = xfs_qm_dqget(mp, NULL, uid, 1698 XFS_DQ_USER, 1699 XFS_QMOPT_DQALLOC | 1700 XFS_QMOPT_DOWARN, 1701 &uq); 1702 if (error) { 1703 ASSERT(error != -ENOENT); 1704 return error; 1705 } 1706 /* 1707 * Get the ilock in the right order. 1708 */ 1709 xfs_dqunlock(uq); 1710 lockflags = XFS_ILOCK_SHARED; 1711 xfs_ilock(ip, lockflags); 1712 } else { 1713 /* 1714 * Take an extra reference, because we'll return 1715 * this to caller 1716 */ 1717 ASSERT(ip->i_udquot); 1718 uq = xfs_qm_dqhold(ip->i_udquot); 1719 } 1720 } 1721 if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { 1722 if (ip->i_d.di_gid != gid) { 1723 xfs_iunlock(ip, lockflags); 1724 error = xfs_qm_dqget(mp, NULL, gid, 1725 XFS_DQ_GROUP, 1726 XFS_QMOPT_DQALLOC | 1727 XFS_QMOPT_DOWARN, 1728 &gq); 1729 if (error) { 1730 ASSERT(error != -ENOENT); 1731 goto error_rele; 1732 } 1733 xfs_dqunlock(gq); 1734 lockflags = XFS_ILOCK_SHARED; 1735 xfs_ilock(ip, lockflags); 1736 } else { 1737 ASSERT(ip->i_gdquot); 1738 gq = xfs_qm_dqhold(ip->i_gdquot); 1739 } 1740 } 1741 if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { 1742 if (xfs_get_projid(ip) != prid) { 1743 xfs_iunlock(ip, lockflags); 1744 error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, 1745 XFS_DQ_PROJ, 1746 XFS_QMOPT_DQALLOC | 1747 XFS_QMOPT_DOWARN, 1748 &pq); 1749 if (error) { 1750 ASSERT(error != -ENOENT); 1751 goto error_rele; 1752 } 1753 xfs_dqunlock(pq); 1754 lockflags = XFS_ILOCK_SHARED; 1755 xfs_ilock(ip, lockflags); 1756 } else { 1757 ASSERT(ip->i_pdquot); 1758 pq = xfs_qm_dqhold(ip->i_pdquot); 1759 } 1760 } 1761 if (uq) 1762 trace_xfs_dquot_dqalloc(ip); 1763 1764 xfs_iunlock(ip, lockflags); 1765 if (O_udqpp) 1766 *O_udqpp = uq; 1767 else 1768 xfs_qm_dqrele(uq); 1769 if (O_gdqpp) 1770 *O_gdqpp = gq; 1771 else 1772 xfs_qm_dqrele(gq); 1773 if (O_pdqpp) 1774 *O_pdqpp = pq; 1775 else 1776 xfs_qm_dqrele(pq); 1777 return 0; 1778 1779 error_rele: 1780 xfs_qm_dqrele(gq); 1781 xfs_qm_dqrele(uq); 1782 return error; 1783 } 1784 1785 /* 1786 * Actually transfer ownership, and do dquot modifications. 1787 * These were already reserved. 1788 */ 1789 xfs_dquot_t * 1790 xfs_qm_vop_chown( 1791 xfs_trans_t *tp, 1792 xfs_inode_t *ip, 1793 xfs_dquot_t **IO_olddq, 1794 xfs_dquot_t *newdq) 1795 { 1796 xfs_dquot_t *prevdq; 1797 uint bfield = XFS_IS_REALTIME_INODE(ip) ? 1798 XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; 1799 1800 1801 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 1802 ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); 1803 1804 /* old dquot */ 1805 prevdq = *IO_olddq; 1806 ASSERT(prevdq); 1807 ASSERT(prevdq != newdq); 1808 1809 xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); 1810 xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); 1811 1812 /* the sparkling new dquot */ 1813 xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); 1814 xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); 1815 1816 /* 1817 * Take an extra reference, because the inode is going to keep 1818 * this dquot pointer even after the trans_commit. 1819 */ 1820 *IO_olddq = xfs_qm_dqhold(newdq); 1821 1822 return prevdq; 1823 } 1824 1825 /* 1826 * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). 1827 */ 1828 int 1829 xfs_qm_vop_chown_reserve( 1830 struct xfs_trans *tp, 1831 struct xfs_inode *ip, 1832 struct xfs_dquot *udqp, 1833 struct xfs_dquot *gdqp, 1834 struct xfs_dquot *pdqp, 1835 uint flags) 1836 { 1837 struct xfs_mount *mp = ip->i_mount; 1838 uint delblks, blkflags, prjflags = 0; 1839 struct xfs_dquot *udq_unres = NULL; 1840 struct xfs_dquot *gdq_unres = NULL; 1841 struct xfs_dquot *pdq_unres = NULL; 1842 struct xfs_dquot *udq_delblks = NULL; 1843 struct xfs_dquot *gdq_delblks = NULL; 1844 struct xfs_dquot *pdq_delblks = NULL; 1845 int error; 1846 1847 1848 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); 1849 ASSERT(XFS_IS_QUOTA_RUNNING(mp)); 1850 1851 delblks = ip->i_delayed_blks; 1852 blkflags = XFS_IS_REALTIME_INODE(ip) ? 1853 XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; 1854 1855 if (XFS_IS_UQUOTA_ON(mp) && udqp && 1856 ip->i_d.di_uid != be32_to_cpu(udqp->q_core.d_id)) { 1857 udq_delblks = udqp; 1858 /* 1859 * If there are delayed allocation blocks, then we have to 1860 * unreserve those from the old dquot, and add them to the 1861 * new dquot. 1862 */ 1863 if (delblks) { 1864 ASSERT(ip->i_udquot); 1865 udq_unres = ip->i_udquot; 1866 } 1867 } 1868 if (XFS_IS_GQUOTA_ON(ip->i_mount) && gdqp && 1869 ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id)) { 1870 gdq_delblks = gdqp; 1871 if (delblks) { 1872 ASSERT(ip->i_gdquot); 1873 gdq_unres = ip->i_gdquot; 1874 } 1875 } 1876 1877 if (XFS_IS_PQUOTA_ON(ip->i_mount) && pdqp && 1878 xfs_get_projid(ip) != be32_to_cpu(pdqp->q_core.d_id)) { 1879 prjflags = XFS_QMOPT_ENOSPC; 1880 pdq_delblks = pdqp; 1881 if (delblks) { 1882 ASSERT(ip->i_pdquot); 1883 pdq_unres = ip->i_pdquot; 1884 } 1885 } 1886 1887 error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, 1888 udq_delblks, gdq_delblks, pdq_delblks, 1889 ip->i_d.di_nblocks, 1, 1890 flags | blkflags | prjflags); 1891 if (error) 1892 return error; 1893 1894 /* 1895 * Do the delayed blks reservations/unreservations now. Since, these 1896 * are done without the help of a transaction, if a reservation fails 1897 * its previous reservations won't be automatically undone by trans 1898 * code. So, we have to do it manually here. 1899 */ 1900 if (delblks) { 1901 /* 1902 * Do the reservations first. Unreservation can't fail. 1903 */ 1904 ASSERT(udq_delblks || gdq_delblks || pdq_delblks); 1905 ASSERT(udq_unres || gdq_unres || pdq_unres); 1906 error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, 1907 udq_delblks, gdq_delblks, pdq_delblks, 1908 (xfs_qcnt_t)delblks, 0, 1909 flags | blkflags | prjflags); 1910 if (error) 1911 return error; 1912 xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, 1913 udq_unres, gdq_unres, pdq_unres, 1914 -((xfs_qcnt_t)delblks), 0, blkflags); 1915 } 1916 1917 return 0; 1918 } 1919 1920 int 1921 xfs_qm_vop_rename_dqattach( 1922 struct xfs_inode **i_tab) 1923 { 1924 struct xfs_mount *mp = i_tab[0]->i_mount; 1925 int i; 1926 1927 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) 1928 return 0; 1929 1930 for (i = 0; (i < 4 && i_tab[i]); i++) { 1931 struct xfs_inode *ip = i_tab[i]; 1932 int error; 1933 1934 /* 1935 * Watch out for duplicate entries in the table. 1936 */ 1937 if (i == 0 || ip != i_tab[i-1]) { 1938 if (XFS_NOT_DQATTACHED(mp, ip)) { 1939 error = xfs_qm_dqattach(ip, 0); 1940 if (error) 1941 return error; 1942 } 1943 } 1944 } 1945 return 0; 1946 } 1947 1948 void 1949 xfs_qm_vop_create_dqattach( 1950 struct xfs_trans *tp, 1951 struct xfs_inode *ip, 1952 struct xfs_dquot *udqp, 1953 struct xfs_dquot *gdqp, 1954 struct xfs_dquot *pdqp) 1955 { 1956 struct xfs_mount *mp = tp->t_mountp; 1957 1958 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) 1959 return; 1960 1961 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 1962 ASSERT(XFS_IS_QUOTA_RUNNING(mp)); 1963 1964 if (udqp && XFS_IS_UQUOTA_ON(mp)) { 1965 ASSERT(ip->i_udquot == NULL); 1966 ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); 1967 1968 ip->i_udquot = xfs_qm_dqhold(udqp); 1969 xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); 1970 } 1971 if (gdqp && XFS_IS_GQUOTA_ON(mp)) { 1972 ASSERT(ip->i_gdquot == NULL); 1973 ASSERT(ip->i_d.di_gid == be32_to_cpu(gdqp->q_core.d_id)); 1974 ip->i_gdquot = xfs_qm_dqhold(gdqp); 1975 xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); 1976 } 1977 if (pdqp && XFS_IS_PQUOTA_ON(mp)) { 1978 ASSERT(ip->i_pdquot == NULL); 1979 ASSERT(xfs_get_projid(ip) == be32_to_cpu(pdqp->q_core.d_id)); 1980 1981 ip->i_pdquot = xfs_qm_dqhold(pdqp); 1982 xfs_trans_mod_dquot(tp, pdqp, XFS_TRANS_DQ_ICOUNT, 1); 1983 } 1984 } 1985 1986