fs/xfs/quota/xfs_dquot_item.c

   1 /*
   2  * Copyright (c) 2000-2003 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_bit.h"
  21 #include "xfs_log.h"
  22 #include "xfs_inum.h"
  23 #include "xfs_trans.h"
  24 #include "xfs_sb.h"
  25 #include "xfs_ag.h"
  26 #include "xfs_dir2.h"
  27 #include "xfs_alloc.h"
  28 #include "xfs_dmapi.h"
  29 #include "xfs_quota.h"
  30 #include "xfs_mount.h"
  31 #include "xfs_bmap_btree.h"
  32 #include "xfs_alloc_btree.h"
  33 #include "xfs_ialloc_btree.h"
  34 #include "xfs_dir2_sf.h"
  35 #include "xfs_attr_sf.h"
  36 #include "xfs_dinode.h"
  37 #include "xfs_inode.h"
  38 #include "xfs_bmap.h"
  39 #include "xfs_btree.h"
  40 #include "xfs_ialloc.h"
  41 #include "xfs_rtalloc.h"
  42 #include "xfs_error.h"
  43 #include "xfs_itable.h"
  44 #include "xfs_rw.h"
  45 #include "xfs_acl.h"
  46 #include "xfs_attr.h"
  47 #include "xfs_buf_item.h"
  48 #include "xfs_trans_priv.h"
  49 #include "xfs_qm.h"
  50
  51 /*
  52  * returns the number of iovecs needed to log the given dquot item.
  53  */
  54 /* ARGSUSED */
  55 STATIC uint
  56 xfs_qm_dquot_logitem_size(
  57         xfs_dq_logitem_t        *logitem)
  58 {
  59         /*
  60          * we need only two iovecs, one for the format, one for the real thing
  61          */
  62         return (2);
  63 }
  64
  65 /*
  66  * fills in the vector of log iovecs for the given dquot log item.
  67  */
  68 STATIC void
  69 xfs_qm_dquot_logitem_format(
  70         xfs_dq_logitem_t        *logitem,
  71         xfs_log_iovec_t         *logvec)
  72 {
  73         ASSERT(logitem);
  74         ASSERT(logitem->qli_dquot);
  75
  76         logvec->i_addr = (xfs_caddr_t)&logitem->qli_format;
  77         logvec->i_len  = sizeof(xfs_dq_logformat_t);
  78         XLOG_VEC_SET_TYPE(logvec, XLOG_REG_TYPE_QFORMAT);
  79         logvec++;
  80         logvec->i_addr = (xfs_caddr_t)&logitem->qli_dquot->q_core;
  81         logvec->i_len  = sizeof(xfs_disk_dquot_t);
  82         XLOG_VEC_SET_TYPE(logvec, XLOG_REG_TYPE_DQUOT);
  83
  84         ASSERT(2 == logitem->qli_item.li_desc->lid_size);
  85         logitem->qli_format.qlf_size = 2;
  86
  87 }
  88
  89 /*
  90  * Increment the pin count of the given dquot.
  91  */
  92 STATIC void
  93 xfs_qm_dquot_logitem_pin(
  94         xfs_dq_logitem_t *logitem)
  95 {
  96         xfs_dquot_t *dqp = logitem->qli_dquot;
  97
  98         ASSERT(XFS_DQ_IS_LOCKED(dqp));
  99         atomic_inc(&dqp->q_pincount);
 100 }
 101
 102 /*
 103  * Decrement the pin count of the given dquot, and wake up
 104  * anyone in xfs_dqwait_unpin() if the count goes to 0.  The
 105  * dquot must have been previously pinned with a call to
 106  * xfs_qm_dquot_logitem_pin().
 107  */
 108 /* ARGSUSED */
 109 STATIC void
 110 xfs_qm_dquot_logitem_unpin(
 111         xfs_dq_logitem_t *logitem,
 112         int               stale)
 113 {
 114         xfs_dquot_t *dqp = logitem->qli_dquot;
 115
 116         ASSERT(atomic_read(&dqp->q_pincount) > 0);
 117         if (atomic_dec_and_test(&dqp->q_pincount))
 118                 wake_up(&dqp->q_pinwait);
 119 }
 120
 121 /* ARGSUSED */
 122 STATIC void
 123 xfs_qm_dquot_logitem_unpin_remove(
 124         xfs_dq_logitem_t *logitem,
 125         xfs_trans_t      *tp)
 126 {
 127         xfs_qm_dquot_logitem_unpin(logitem, 0);
 128 }
 129
 130 /*
 131  * Given the logitem, this writes the corresponding dquot entry to disk
 132  * asynchronously. This is called with the dquot entry securely locked;
 133  * we simply get xfs_qm_dqflush() to do the work, and unlock the dquot
 134  * at the end.
 135  */
 136 STATIC void
 137 xfs_qm_dquot_logitem_push(
 138         xfs_dq_logitem_t        *logitem)
 139 {
 140         xfs_dquot_t     *dqp;
 141         int             error;
 142
 143         dqp = logitem->qli_dquot;
 144
 145         ASSERT(XFS_DQ_IS_LOCKED(dqp));
 146         ASSERT(!completion_done(&dqp->q_flush));
 147
 148         /*
 149          * Since we were able to lock the dquot's flush lock and
 150          * we found it on the AIL, the dquot must be dirty.  This
 151          * is because the dquot is removed from the AIL while still
 152          * holding the flush lock in xfs_dqflush_done().  Thus, if
 153          * we found it in the AIL and were able to obtain the flush
 154          * lock without sleeping, then there must not have been
 155          * anyone in the process of flushing the dquot.
 156          */
 157         error = xfs_qm_dqflush(dqp, XFS_QMOPT_DELWRI);
 158         if (error)
 159                 xfs_fs_cmn_err(CE_WARN, dqp->q_mount,
 160                         "xfs_qm_dquot_logitem_push: push error %d on dqp %p",
 161                         error, dqp);
 162         xfs_dqunlock(dqp);
 163 }
 164
 165 /*ARGSUSED*/
 166 STATIC xfs_lsn_t
 167 xfs_qm_dquot_logitem_committed(
 168         xfs_dq_logitem_t        *l,
 169         xfs_lsn_t               lsn)
 170 {
 171         /*
 172          * We always re-log the entire dquot when it becomes dirty,
 173          * so, the latest copy _is_ the only one that matters.
 174          */
 175         return (lsn);
 176 }
 177
 178
 179 /*
 180  * This is called to wait for the given dquot to be unpinned.
 181  * Most of these pin/unpin routines are plagiarized from inode code.
 182  */
 183 void
 184 xfs_qm_dqunpin_wait(
 185         xfs_dquot_t     *dqp)
 186 {
 187         ASSERT(XFS_DQ_IS_LOCKED(dqp));
 188         if (atomic_read(&dqp->q_pincount) == 0)
 189                 return;
 190
 191         /*
 192          * Give the log a push so we don't wait here too long.
 193          */
 194         xfs_log_force(dqp->q_mount, (xfs_lsn_t)0, XFS_LOG_FORCE);
 195         wait_event(dqp->q_pinwait, (atomic_read(&dqp->q_pincount) == 0));
 196 }
 197
 198 /*
 199  * This is called when IOP_TRYLOCK returns XFS_ITEM_PUSHBUF to indicate that
 200  * the dquot is locked by us, but the flush lock isn't. So, here we are
 201  * going to see if the relevant dquot buffer is incore, waiting on DELWRI.
 202  * If so, we want to push it out to help us take this item off the AIL as soon
 203  * as possible.
 204  *
 205  * We must not be holding the AIL lock at this point. Calling incore() to
 206  * search the buffer cache can be a time consuming thing, and AIL lock is a
 207  * spinlock.
 208  */
 209 STATIC void
 210 xfs_qm_dquot_logitem_pushbuf(
 211         xfs_dq_logitem_t    *qip)
 212 {
 213         xfs_dquot_t     *dqp;
 214         xfs_mount_t     *mp;
 215         xfs_buf_t       *bp;
 216         uint            dopush;
 217
 218         dqp = qip->qli_dquot;
 219         ASSERT(XFS_DQ_IS_LOCKED(dqp));
 220
 221         /*
 222          * The qli_pushbuf_flag keeps others from
 223          * trying to duplicate our effort.
 224          */
 225         ASSERT(qip->qli_pushbuf_flag != 0);
 226         ASSERT(qip->qli_push_owner == current_pid());
 227
 228         /*
 229          * If flushlock isn't locked anymore, chances are that the
 230          * inode flush completed and the inode was taken off the AIL.
 231          * So, just get out.
 232          */
 233         if (completion_done(&dqp->q_flush)  ||
 234             ((qip->qli_item.li_flags & XFS_LI_IN_AIL) == 0)) {
 235                 qip->qli_pushbuf_flag = 0;
 236                 xfs_dqunlock(dqp);
 237                 return;
 238         }
 239         mp = dqp->q_mount;
 240         bp = xfs_incore(mp->m_ddev_targp, qip->qli_format.qlf_blkno,
 241                     XFS_QI_DQCHUNKLEN(mp),
 242                     XFS_INCORE_TRYLOCK);
 243         if (bp != NULL) {
 244                 if (XFS_BUF_ISDELAYWRITE(bp)) {
 245                         dopush = ((qip->qli_item.li_flags & XFS_LI_IN_AIL) &&
 246                                   !completion_done(&dqp->q_flush));
 247                         qip->qli_pushbuf_flag = 0;
 248                         xfs_dqunlock(dqp);
 249
 250                         if (XFS_BUF_ISPINNED(bp)) {
 251                                 xfs_log_force(mp, (xfs_lsn_t)0,
 252                                               XFS_LOG_FORCE);
 253                         }
 254                         if (dopush) {
 255                                 int     error;
 256 #ifdef XFSRACEDEBUG
 257                                 delay_for_intr();
 258                                 delay(300);
 259 #endif
 260                                 error = xfs_bawrite(mp, bp);
 261                                 if (error)
 262                                         xfs_fs_cmn_err(CE_WARN, mp,
 263         "xfs_qm_dquot_logitem_pushbuf: pushbuf error %d on qip %p, bp %p",
 264                                                         error, qip, bp);
 265                         } else {
 266                                 xfs_buf_relse(bp);
 267                         }
 268                 } else {
 269                         qip->qli_pushbuf_flag = 0;
 270                         xfs_dqunlock(dqp);
 271                         xfs_buf_relse(bp);
 272                 }
 273                 return;
 274         }
 275
 276         qip->qli_pushbuf_flag = 0;
 277         xfs_dqunlock(dqp);
 278 }
 279
 280 /*
 281  * This is called to attempt to lock the dquot associated with this
 282  * dquot log item.  Don't sleep on the dquot lock or the flush lock.
 283  * If the flush lock is already held, indicating that the dquot has
 284  * been or is in the process of being flushed, then see if we can
 285  * find the dquot's buffer in the buffer cache without sleeping.  If
 286  * we can and it is marked delayed write, then we want to send it out.
 287  * We delay doing so until the push routine, though, to avoid sleeping
 288  * in any device strategy routines.
 289  */
 290 STATIC uint
 291 xfs_qm_dquot_logitem_trylock(
 292         xfs_dq_logitem_t        *qip)
 293 {
 294         xfs_dquot_t             *dqp;
 295         uint                    retval;
 296
 297         dqp = qip->qli_dquot;
 298         if (atomic_read(&dqp->q_pincount) > 0)
 299                 return (XFS_ITEM_PINNED);
 300
 301         if (! xfs_qm_dqlock_nowait(dqp))
 302                 return (XFS_ITEM_LOCKED);
 303
 304         retval = XFS_ITEM_SUCCESS;
 305         if (!xfs_dqflock_nowait(dqp)) {
 306                 /*
 307                  * The dquot is already being flushed.  It may have been
 308                  * flushed delayed write, however, and we don't want to
 309                  * get stuck waiting for that to complete.  So, we want to check
 310                  * to see if we can lock the dquot's buffer without sleeping.
 311                  * If we can and it is marked for delayed write, then we
 312                  * hold it and send it out from the push routine.  We don't
 313                  * want to do that now since we might sleep in the device
 314                  * strategy routine.  We also don't want to grab the buffer lock
 315                  * here because we'd like not to call into the buffer cache
 316                  * while holding the AIL lock.
 317                  * Make sure to only return PUSHBUF if we set pushbuf_flag
 318                  * ourselves.  If someone else is doing it then we don't
 319                  * want to go to the push routine and duplicate their efforts.
 320                  */
 321                 if (qip->qli_pushbuf_flag == 0) {
 322                         qip->qli_pushbuf_flag = 1;
 323                         ASSERT(qip->qli_format.qlf_blkno == dqp->q_blkno);
 324 #ifdef DEBUG
 325                         qip->qli_push_owner = current_pid();
 326 #endif
 327                         /*
 328                          * The dquot is left locked.
 329                          */
 330                         retval = XFS_ITEM_PUSHBUF;
 331                 } else {
 332                         retval = XFS_ITEM_FLUSHING;
 333                         xfs_dqunlock_nonotify(dqp);
 334                 }
 335         }
 336
 337         ASSERT(qip->qli_item.li_flags & XFS_LI_IN_AIL);
 338         return (retval);
 339 }
 340
 341
 342 /*
 343  * Unlock the dquot associated with the log item.
 344  * Clear the fields of the dquot and dquot log item that
 345  * are specific to the current transaction.  If the
 346  * hold flags is set, do not unlock the dquot.
 347  */
 348 STATIC void
 349 xfs_qm_dquot_logitem_unlock(
 350         xfs_dq_logitem_t    *ql)
 351 {
 352         xfs_dquot_t     *dqp;
 353
 354         ASSERT(ql != NULL);
 355         dqp = ql->qli_dquot;
 356         ASSERT(XFS_DQ_IS_LOCKED(dqp));
 357
 358         /*
 359          * Clear the transaction pointer in the dquot
 360          */
 361         dqp->q_transp = NULL;
 362
 363         /*
 364          * dquots are never 'held' from getting unlocked at the end of
 365          * a transaction.  Their locking and unlocking is hidden inside the
 366          * transaction layer, within trans_commit. Hence, no LI_HOLD flag
 367          * for the logitem.
 368          */
 369         xfs_dqunlock(dqp);
 370 }
 371
 372
 373 /*
 374  * this needs to stamp an lsn into the dquot, I think.
 375  * rpc's that look at user dquot's would then have to
 376  * push on the dependency recorded in the dquot
 377  */
 378 /* ARGSUSED */
 379 STATIC void
 380 xfs_qm_dquot_logitem_committing(
 381         xfs_dq_logitem_t        *l,
 382         xfs_lsn_t               lsn)
 383 {
 384         return;
 385 }
 386
 387
 388 /*
 389  * This is the ops vector for dquots
 390  */
 391 static struct xfs_item_ops xfs_dquot_item_ops = {
 392         .iop_size       = (uint(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_size,
 393         .iop_format     = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*))
 394                                         xfs_qm_dquot_logitem_format,
 395         .iop_pin        = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_pin,
 396         .iop_unpin      = (void(*)(xfs_log_item_t*, int))
 397                                         xfs_qm_dquot_logitem_unpin,
 398         .iop_unpin_remove = (void(*)(xfs_log_item_t*, xfs_trans_t*))
 399                                         xfs_qm_dquot_logitem_unpin_remove,
 400         .iop_trylock    = (uint(*)(xfs_log_item_t*))
 401                                         xfs_qm_dquot_logitem_trylock,
 402         .iop_unlock     = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_unlock,
 403         .iop_committed  = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t))
 404                                         xfs_qm_dquot_logitem_committed,
 405         .iop_push       = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_push,
 406         .iop_pushbuf    = (void(*)(xfs_log_item_t*))
 407                                         xfs_qm_dquot_logitem_pushbuf,
 408         .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t))
 409                                         xfs_qm_dquot_logitem_committing
 410 };
 411
 412 /*
 413  * Initialize the dquot log item for a newly allocated dquot.
 414  * The dquot isn't locked at this point, but it isn't on any of the lists
 415  * either, so we don't care.
 416  */
 417 void
 418 xfs_qm_dquot_logitem_init(
 419         struct xfs_dquot *dqp)
 420 {
 421         xfs_dq_logitem_t  *lp;
 422         lp = &dqp->q_logitem;
 423
 424         lp->qli_item.li_type = XFS_LI_DQUOT;
 425         lp->qli_item.li_ops = &xfs_dquot_item_ops;
 426         lp->qli_item.li_mountp = dqp->q_mount;
 427         lp->qli_dquot = dqp;
 428         lp->qli_format.qlf_type = XFS_LI_DQUOT;
 429         lp->qli_format.qlf_id = be32_to_cpu(dqp->q_core.d_id);
 430         lp->qli_format.qlf_blkno = dqp->q_blkno;
 431         lp->qli_format.qlf_len = 1;
 432         /*
 433          * This is just the offset of this dquot within its buffer
 434          * (which is currently 1 FSB and probably won't change).
 435          * Hence 32 bits for this offset should be just fine.
 436          * Alternatively, we can store (bufoffset / sizeof(xfs_dqblk_t))
 437          * here, and recompute it at recovery time.
 438          */
 439         lp->qli_format.qlf_boffset = (__uint32_t)dqp->q_bufoffset;
 440 }
 441
 442 /*------------------  QUOTAOFF LOG ITEMS  -------------------*/
 443
 444 /*
 445  * This returns the number of iovecs needed to log the given quotaoff item.
 446  * We only need 1 iovec for an quotaoff item.  It just logs the
 447  * quotaoff_log_format structure.
 448  */
 449 /*ARGSUSED*/
 450 STATIC uint
 451 xfs_qm_qoff_logitem_size(xfs_qoff_logitem_t *qf)
 452 {
 453         return (1);
 454 }
 455
 456 /*
 457  * This is called to fill in the vector of log iovecs for the
 458  * given quotaoff log item. We use only 1 iovec, and we point that
 459  * at the quotaoff_log_format structure embedded in the quotaoff item.
 460  * It is at this point that we assert that all of the extent
 461  * slots in the quotaoff item have been filled.
 462  */
 463 STATIC void
 464 xfs_qm_qoff_logitem_format(xfs_qoff_logitem_t   *qf,
 465                            xfs_log_iovec_t      *log_vector)
 466 {
 467         ASSERT(qf->qql_format.qf_type == XFS_LI_QUOTAOFF);
 468
 469         log_vector->i_addr = (xfs_caddr_t)&(qf->qql_format);
 470         log_vector->i_len = sizeof(xfs_qoff_logitem_t);
 471         XLOG_VEC_SET_TYPE(log_vector, XLOG_REG_TYPE_QUOTAOFF);
 472         qf->qql_format.qf_size = 1;
 473 }
 474
 475
 476 /*
 477  * Pinning has no meaning for an quotaoff item, so just return.
 478  */
 479 /*ARGSUSED*/
 480 STATIC void
 481 xfs_qm_qoff_logitem_pin(xfs_qoff_logitem_t *qf)
 482 {
 483         return;
 484 }
 485
 486
 487 /*
 488  * Since pinning has no meaning for an quotaoff item, unpinning does
 489  * not either.
 490  */
 491 /*ARGSUSED*/
 492 STATIC void
 493 xfs_qm_qoff_logitem_unpin(xfs_qoff_logitem_t *qf, int stale)
 494 {
 495         return;
 496 }
 497
 498 /*ARGSUSED*/
 499 STATIC void
 500 xfs_qm_qoff_logitem_unpin_remove(xfs_qoff_logitem_t *qf, xfs_trans_t *tp)
 501 {
 502         return;
 503 }
 504
 505 /*
 506  * Quotaoff items have no locking, so just return success.
 507  */
 508 /*ARGSUSED*/
 509 STATIC uint
 510 xfs_qm_qoff_logitem_trylock(xfs_qoff_logitem_t *qf)
 511 {
 512         return XFS_ITEM_LOCKED;
 513 }
 514
 515 /*
 516  * Quotaoff items have no locking or pushing, so return failure
 517  * so that the caller doesn't bother with us.
 518  */
 519 /*ARGSUSED*/
 520 STATIC void
 521 xfs_qm_qoff_logitem_unlock(xfs_qoff_logitem_t *qf)
 522 {
 523         return;
 524 }
 525
 526 /*
 527  * The quotaoff-start-item is logged only once and cannot be moved in the log,
 528  * so simply return the lsn at which it's been logged.
 529  */
 530 /*ARGSUSED*/
 531 STATIC xfs_lsn_t
 532 xfs_qm_qoff_logitem_committed(xfs_qoff_logitem_t *qf, xfs_lsn_t lsn)
 533 {
 534         return (lsn);
 535 }
 536
 537 /*
 538  * There isn't much you can do to push on an quotaoff item.  It is simply
 539  * stuck waiting for the log to be flushed to disk.
 540  */
 541 /*ARGSUSED*/
 542 STATIC void
 543 xfs_qm_qoff_logitem_push(xfs_qoff_logitem_t *qf)
 544 {
 545         return;
 546 }
 547
 548
 549 /*ARGSUSED*/
 550 STATIC xfs_lsn_t
 551 xfs_qm_qoffend_logitem_committed(
 552         xfs_qoff_logitem_t *qfe,
 553         xfs_lsn_t lsn)
 554 {
 555         xfs_qoff_logitem_t      *qfs;
 556         struct xfs_ail          *ailp;
 557
 558         qfs = qfe->qql_start_lip;
 559         ailp = qfs->qql_item.li_ailp;
 560         spin_lock(&ailp->xa_lock);
 561         /*
 562          * Delete the qoff-start logitem from the AIL.
 563          * xfs_trans_ail_delete() drops the AIL lock.
 564          */
 565         xfs_trans_ail_delete(ailp, (xfs_log_item_t *)qfs);
 566         kmem_free(qfs);
 567         kmem_free(qfe);
 568         return (xfs_lsn_t)-1;
 569 }
 570
 571 /*
 572  * XXX rcc - don't know quite what to do with this.  I think we can
 573  * just ignore it.  The only time that isn't the case is if we allow
 574  * the client to somehow see that quotas have been turned off in which
 575  * we can't allow that to get back until the quotaoff hits the disk.
 576  * So how would that happen?  Also, do we need different routines for
 577  * quotaoff start and quotaoff end?  I suspect the answer is yes but
 578  * to be sure, I need to look at the recovery code and see how quota off
 579  * recovery is handled (do we roll forward or back or do something else).
 580  * If we roll forwards or backwards, then we need two separate routines,
 581  * one that does nothing and one that stamps in the lsn that matters
 582  * (truly makes the quotaoff irrevocable).  If we do something else,
 583  * then maybe we don't need two.
 584  */
 585 /* ARGSUSED */
 586 STATIC void
 587 xfs_qm_qoff_logitem_committing(xfs_qoff_logitem_t *qip, xfs_lsn_t commit_lsn)
 588 {
 589         return;
 590 }
 591
 592 /* ARGSUSED */
 593 STATIC void
 594 xfs_qm_qoffend_logitem_committing(xfs_qoff_logitem_t *qip, xfs_lsn_t commit_lsn)
 595 {
 596         return;
 597 }
 598
 599 static struct xfs_item_ops xfs_qm_qoffend_logitem_ops = {
 600         .iop_size       = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_size,
 601         .iop_format     = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*))
 602                                         xfs_qm_qoff_logitem_format,
 603         .iop_pin        = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_pin,
 604         .iop_unpin      = (void(*)(xfs_log_item_t* ,int))
 605                                         xfs_qm_qoff_logitem_unpin,
 606         .iop_unpin_remove = (void(*)(xfs_log_item_t*,xfs_trans_t*))
 607                                         xfs_qm_qoff_logitem_unpin_remove,
 608         .iop_trylock    = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_trylock,
 609         .iop_unlock     = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_unlock,
 610         .iop_committed  = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t))
 611                                         xfs_qm_qoffend_logitem_committed,
 612         .iop_push       = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_push,
 613         .iop_pushbuf    = NULL,
 614         .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t))
 615                                         xfs_qm_qoffend_logitem_committing
 616 };
 617
 618 /*
 619  * This is the ops vector shared by all quotaoff-start log items.
 620  */
 621 static struct xfs_item_ops xfs_qm_qoff_logitem_ops = {
 622         .iop_size       = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_size,
 623         .iop_format     = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*))
 624                                         xfs_qm_qoff_logitem_format,
 625         .iop_pin        = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_pin,
 626         .iop_unpin      = (void(*)(xfs_log_item_t*, int))
 627                                         xfs_qm_qoff_logitem_unpin,
 628         .iop_unpin_remove = (void(*)(xfs_log_item_t*,xfs_trans_t*))
 629                                         xfs_qm_qoff_logitem_unpin_remove,
 630         .iop_trylock    = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_trylock,
 631         .iop_unlock     = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_unlock,
 632         .iop_committed  = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t))
 633                                         xfs_qm_qoff_logitem_committed,
 634         .iop_push       = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_push,
 635         .iop_pushbuf    = NULL,
 636         .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t))
 637                                         xfs_qm_qoff_logitem_committing
 638 };
 639
 640 /*
 641  * Allocate and initialize an quotaoff item of the correct quota type(s).
 642  */
 643 xfs_qoff_logitem_t *
 644 xfs_qm_qoff_logitem_init(
 645         struct xfs_mount *mp,
 646         xfs_qoff_logitem_t *start,
 647         uint flags)
 648 {
 649         xfs_qoff_logitem_t      *qf;
 650
 651         qf = (xfs_qoff_logitem_t*) kmem_zalloc(sizeof(xfs_qoff_logitem_t), KM_SLEEP);
 652
 653         qf->qql_item.li_type = XFS_LI_QUOTAOFF;
 654         if (start)
 655                 qf->qql_item.li_ops = &xfs_qm_qoffend_logitem_ops;
 656         else
 657                 qf->qql_item.li_ops = &xfs_qm_qoff_logitem_ops;
 658         qf->qql_item.li_mountp = mp;
 659         qf->qql_format.qf_type = XFS_LI_QUOTAOFF;
 660         qf->qql_format.qf_flags = flags;
 661         qf->qql_start_lip = start;
 662         return (qf);
 663 }