Merge ARM fixes
[linux-2.6] / 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  * This value is protected by pinlock spinlock in the xQM structure.
92  */
93 STATIC void
94 xfs_qm_dquot_logitem_pin(
95         xfs_dq_logitem_t *logitem)
96 {
97         unsigned long   s;
98         xfs_dquot_t *dqp;
99
100         dqp = logitem->qli_dquot;
101         ASSERT(XFS_DQ_IS_LOCKED(dqp));
102         s = XFS_DQ_PINLOCK(dqp);
103         dqp->q_pincount++;
104         XFS_DQ_PINUNLOCK(dqp, s);
105 }
106
107 /*
108  * Decrement the pin count of the given dquot, and wake up
109  * anyone in xfs_dqwait_unpin() if the count goes to 0.  The
110  * dquot must have been previously pinned with a call to xfs_dqpin().
111  */
112 /* ARGSUSED */
113 STATIC void
114 xfs_qm_dquot_logitem_unpin(
115         xfs_dq_logitem_t *logitem,
116         int               stale)
117 {
118         unsigned long   s;
119         xfs_dquot_t *dqp;
120
121         dqp = logitem->qli_dquot;
122         ASSERT(dqp->q_pincount > 0);
123         s = XFS_DQ_PINLOCK(dqp);
124         dqp->q_pincount--;
125         if (dqp->q_pincount == 0) {
126                 sv_broadcast(&dqp->q_pinwait);
127         }
128         XFS_DQ_PINUNLOCK(dqp, s);
129 }
130
131 /* ARGSUSED */
132 STATIC void
133 xfs_qm_dquot_logitem_unpin_remove(
134         xfs_dq_logitem_t *logitem,
135         xfs_trans_t      *tp)
136 {
137         xfs_qm_dquot_logitem_unpin(logitem, 0);
138 }
139
140 /*
141  * Given the logitem, this writes the corresponding dquot entry to disk
142  * asynchronously. This is called with the dquot entry securely locked;
143  * we simply get xfs_qm_dqflush() to do the work, and unlock the dquot
144  * at the end.
145  */
146 STATIC void
147 xfs_qm_dquot_logitem_push(
148         xfs_dq_logitem_t        *logitem)
149 {
150         xfs_dquot_t     *dqp;
151
152         dqp = logitem->qli_dquot;
153
154         ASSERT(XFS_DQ_IS_LOCKED(dqp));
155         ASSERT(XFS_DQ_IS_FLUSH_LOCKED(dqp));
156
157         /*
158          * Since we were able to lock the dquot's flush lock and
159          * we found it on the AIL, the dquot must be dirty.  This
160          * is because the dquot is removed from the AIL while still
161          * holding the flush lock in xfs_dqflush_done().  Thus, if
162          * we found it in the AIL and were able to obtain the flush
163          * lock without sleeping, then there must not have been
164          * anyone in the process of flushing the dquot.
165          */
166         xfs_qm_dqflush(dqp, XFS_B_DELWRI);
167         xfs_dqunlock(dqp);
168 }
169
170 /*ARGSUSED*/
171 STATIC xfs_lsn_t
172 xfs_qm_dquot_logitem_committed(
173         xfs_dq_logitem_t        *l,
174         xfs_lsn_t               lsn)
175 {
176         /*
177          * We always re-log the entire dquot when it becomes dirty,
178          * so, the latest copy _is_ the only one that matters.
179          */
180         return (lsn);
181 }
182
183
184 /*
185  * This is called to wait for the given dquot to be unpinned.
186  * Most of these pin/unpin routines are plagiarized from inode code.
187  */
188 void
189 xfs_qm_dqunpin_wait(
190         xfs_dquot_t     *dqp)
191 {
192         SPLDECL(s);
193
194         ASSERT(XFS_DQ_IS_LOCKED(dqp));
195         if (dqp->q_pincount == 0) {
196                 return;
197         }
198
199         /*
200          * Give the log a push so we don't wait here too long.
201          */
202         xfs_log_force(dqp->q_mount, (xfs_lsn_t)0, XFS_LOG_FORCE);
203         s = XFS_DQ_PINLOCK(dqp);
204         if (dqp->q_pincount == 0) {
205                 XFS_DQ_PINUNLOCK(dqp, s);
206                 return;
207         }
208         sv_wait(&(dqp->q_pinwait), PINOD,
209                 &(XFS_DQ_TO_QINF(dqp)->qi_pinlock), s);
210 }
211
212 /*
213  * This is called when IOP_TRYLOCK returns XFS_ITEM_PUSHBUF to indicate that
214  * the dquot is locked by us, but the flush lock isn't. So, here we are
215  * going to see if the relevant dquot buffer is incore, waiting on DELWRI.
216  * If so, we want to push it out to help us take this item off the AIL as soon
217  * as possible.
218  *
219  * We must not be holding the AIL_LOCK at this point. Calling incore() to
220  * search the buffer cache can be a time consuming thing, and AIL_LOCK is a
221  * spinlock.
222  */
223 STATIC void
224 xfs_qm_dquot_logitem_pushbuf(
225         xfs_dq_logitem_t    *qip)
226 {
227         xfs_dquot_t     *dqp;
228         xfs_mount_t     *mp;
229         xfs_buf_t       *bp;
230         uint            dopush;
231
232         dqp = qip->qli_dquot;
233         ASSERT(XFS_DQ_IS_LOCKED(dqp));
234
235         /*
236          * The qli_pushbuf_flag keeps others from
237          * trying to duplicate our effort.
238          */
239         ASSERT(qip->qli_pushbuf_flag != 0);
240         ASSERT(qip->qli_push_owner == current_pid());
241
242         /*
243          * If flushlock isn't locked anymore, chances are that the
244          * inode flush completed and the inode was taken off the AIL.
245          * So, just get out.
246          */
247         if (!issemalocked(&(dqp->q_flock))  ||
248             ((qip->qli_item.li_flags & XFS_LI_IN_AIL) == 0)) {
249                 qip->qli_pushbuf_flag = 0;
250                 xfs_dqunlock(dqp);
251                 return;
252         }
253         mp = dqp->q_mount;
254         bp = xfs_incore(mp->m_ddev_targp, qip->qli_format.qlf_blkno,
255                     XFS_QI_DQCHUNKLEN(mp),
256                     XFS_INCORE_TRYLOCK);
257         if (bp != NULL) {
258                 if (XFS_BUF_ISDELAYWRITE(bp)) {
259                         dopush = ((qip->qli_item.li_flags & XFS_LI_IN_AIL) &&
260                                   issemalocked(&(dqp->q_flock)));
261                         qip->qli_pushbuf_flag = 0;
262                         xfs_dqunlock(dqp);
263
264                         if (XFS_BUF_ISPINNED(bp)) {
265                                 xfs_log_force(mp, (xfs_lsn_t)0,
266                                               XFS_LOG_FORCE);
267                         }
268                         if (dopush) {
269 #ifdef XFSRACEDEBUG
270                                 delay_for_intr();
271                                 delay(300);
272 #endif
273                                 xfs_bawrite(mp, bp);
274                         } else {
275                                 xfs_buf_relse(bp);
276                         }
277                 } else {
278                         qip->qli_pushbuf_flag = 0;
279                         xfs_dqunlock(dqp);
280                         xfs_buf_relse(bp);
281                 }
282                 return;
283         }
284
285         qip->qli_pushbuf_flag = 0;
286         xfs_dqunlock(dqp);
287 }
288
289 /*
290  * This is called to attempt to lock the dquot associated with this
291  * dquot log item.  Don't sleep on the dquot lock or the flush lock.
292  * If the flush lock is already held, indicating that the dquot has
293  * been or is in the process of being flushed, then see if we can
294  * find the dquot's buffer in the buffer cache without sleeping.  If
295  * we can and it is marked delayed write, then we want to send it out.
296  * We delay doing so until the push routine, though, to avoid sleeping
297  * in any device strategy routines.
298  */
299 STATIC uint
300 xfs_qm_dquot_logitem_trylock(
301         xfs_dq_logitem_t        *qip)
302 {
303         xfs_dquot_t             *dqp;
304         uint                    retval;
305
306         dqp = qip->qli_dquot;
307         if (dqp->q_pincount > 0)
308                 return (XFS_ITEM_PINNED);
309
310         if (! xfs_qm_dqlock_nowait(dqp))
311                 return (XFS_ITEM_LOCKED);
312
313         retval = XFS_ITEM_SUCCESS;
314         if (! xfs_qm_dqflock_nowait(dqp)) {
315                 /*
316                  * The dquot is already being flushed.  It may have been
317                  * flushed delayed write, however, and we don't want to
318                  * get stuck waiting for that to complete.  So, we want to check
319                  * to see if we can lock the dquot's buffer without sleeping.
320                  * If we can and it is marked for delayed write, then we
321                  * hold it and send it out from the push routine.  We don't
322                  * want to do that now since we might sleep in the device
323                  * strategy routine.  We also don't want to grab the buffer lock
324                  * here because we'd like not to call into the buffer cache
325                  * while holding the AIL_LOCK.
326                  * Make sure to only return PUSHBUF if we set pushbuf_flag
327                  * ourselves.  If someone else is doing it then we don't
328                  * want to go to the push routine and duplicate their efforts.
329                  */
330                 if (qip->qli_pushbuf_flag == 0) {
331                         qip->qli_pushbuf_flag = 1;
332                         ASSERT(qip->qli_format.qlf_blkno == dqp->q_blkno);
333 #ifdef DEBUG
334                         qip->qli_push_owner = current_pid();
335 #endif
336                         /*
337                          * The dquot is left locked.
338                          */
339                         retval = XFS_ITEM_PUSHBUF;
340                 } else {
341                         retval = XFS_ITEM_FLUSHING;
342                         xfs_dqunlock_nonotify(dqp);
343                 }
344         }
345
346         ASSERT(qip->qli_item.li_flags & XFS_LI_IN_AIL);
347         return (retval);
348 }
349
350
351 /*
352  * Unlock the dquot associated with the log item.
353  * Clear the fields of the dquot and dquot log item that
354  * are specific to the current transaction.  If the
355  * hold flags is set, do not unlock the dquot.
356  */
357 STATIC void
358 xfs_qm_dquot_logitem_unlock(
359         xfs_dq_logitem_t    *ql)
360 {
361         xfs_dquot_t     *dqp;
362
363         ASSERT(ql != NULL);
364         dqp = ql->qli_dquot;
365         ASSERT(XFS_DQ_IS_LOCKED(dqp));
366
367         /*
368          * Clear the transaction pointer in the dquot
369          */
370         dqp->q_transp = NULL;
371
372         /*
373          * dquots are never 'held' from getting unlocked at the end of
374          * a transaction.  Their locking and unlocking is hidden inside the
375          * transaction layer, within trans_commit. Hence, no LI_HOLD flag
376          * for the logitem.
377          */
378         xfs_dqunlock(dqp);
379 }
380
381
382 /*
383  * this needs to stamp an lsn into the dquot, I think.
384  * rpc's that look at user dquot's would then have to
385  * push on the dependency recorded in the dquot
386  */
387 /* ARGSUSED */
388 STATIC void
389 xfs_qm_dquot_logitem_committing(
390         xfs_dq_logitem_t        *l,
391         xfs_lsn_t               lsn)
392 {
393         return;
394 }
395
396
397 /*
398  * This is the ops vector for dquots
399  */
400 static struct xfs_item_ops xfs_dquot_item_ops = {
401         .iop_size       = (uint(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_size,
402         .iop_format     = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*))
403                                         xfs_qm_dquot_logitem_format,
404         .iop_pin        = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_pin,
405         .iop_unpin      = (void(*)(xfs_log_item_t*, int))
406                                         xfs_qm_dquot_logitem_unpin,
407         .iop_unpin_remove = (void(*)(xfs_log_item_t*, xfs_trans_t*))
408                                         xfs_qm_dquot_logitem_unpin_remove,
409         .iop_trylock    = (uint(*)(xfs_log_item_t*))
410                                         xfs_qm_dquot_logitem_trylock,
411         .iop_unlock     = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_unlock,
412         .iop_committed  = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t))
413                                         xfs_qm_dquot_logitem_committed,
414         .iop_push       = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_push,
415         .iop_pushbuf    = (void(*)(xfs_log_item_t*))
416                                         xfs_qm_dquot_logitem_pushbuf,
417         .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t))
418                                         xfs_qm_dquot_logitem_committing
419 };
420
421 /*
422  * Initialize the dquot log item for a newly allocated dquot.
423  * The dquot isn't locked at this point, but it isn't on any of the lists
424  * either, so we don't care.
425  */
426 void
427 xfs_qm_dquot_logitem_init(
428         struct xfs_dquot *dqp)
429 {
430         xfs_dq_logitem_t  *lp;
431         lp = &dqp->q_logitem;
432
433         lp->qli_item.li_type = XFS_LI_DQUOT;
434         lp->qli_item.li_ops = &xfs_dquot_item_ops;
435         lp->qli_item.li_mountp = dqp->q_mount;
436         lp->qli_dquot = dqp;
437         lp->qli_format.qlf_type = XFS_LI_DQUOT;
438         lp->qli_format.qlf_id = be32_to_cpu(dqp->q_core.d_id);
439         lp->qli_format.qlf_blkno = dqp->q_blkno;
440         lp->qli_format.qlf_len = 1;
441         /*
442          * This is just the offset of this dquot within its buffer
443          * (which is currently 1 FSB and probably won't change).
444          * Hence 32 bits for this offset should be just fine.
445          * Alternatively, we can store (bufoffset / sizeof(xfs_dqblk_t))
446          * here, and recompute it at recovery time.
447          */
448         lp->qli_format.qlf_boffset = (__uint32_t)dqp->q_bufoffset;
449 }
450
451 /*------------------  QUOTAOFF LOG ITEMS  -------------------*/
452
453 /*
454  * This returns the number of iovecs needed to log the given quotaoff item.
455  * We only need 1 iovec for an quotaoff item.  It just logs the
456  * quotaoff_log_format structure.
457  */
458 /*ARGSUSED*/
459 STATIC uint
460 xfs_qm_qoff_logitem_size(xfs_qoff_logitem_t *qf)
461 {
462         return (1);
463 }
464
465 /*
466  * This is called to fill in the vector of log iovecs for the
467  * given quotaoff log item. We use only 1 iovec, and we point that
468  * at the quotaoff_log_format structure embedded in the quotaoff item.
469  * It is at this point that we assert that all of the extent
470  * slots in the quotaoff item have been filled.
471  */
472 STATIC void
473 xfs_qm_qoff_logitem_format(xfs_qoff_logitem_t   *qf,
474                            xfs_log_iovec_t      *log_vector)
475 {
476         ASSERT(qf->qql_format.qf_type == XFS_LI_QUOTAOFF);
477
478         log_vector->i_addr = (xfs_caddr_t)&(qf->qql_format);
479         log_vector->i_len = sizeof(xfs_qoff_logitem_t);
480         XLOG_VEC_SET_TYPE(log_vector, XLOG_REG_TYPE_QUOTAOFF);
481         qf->qql_format.qf_size = 1;
482 }
483
484
485 /*
486  * Pinning has no meaning for an quotaoff item, so just return.
487  */
488 /*ARGSUSED*/
489 STATIC void
490 xfs_qm_qoff_logitem_pin(xfs_qoff_logitem_t *qf)
491 {
492         return;
493 }
494
495
496 /*
497  * Since pinning has no meaning for an quotaoff item, unpinning does
498  * not either.
499  */
500 /*ARGSUSED*/
501 STATIC void
502 xfs_qm_qoff_logitem_unpin(xfs_qoff_logitem_t *qf, int stale)
503 {
504         return;
505 }
506
507 /*ARGSUSED*/
508 STATIC void
509 xfs_qm_qoff_logitem_unpin_remove(xfs_qoff_logitem_t *qf, xfs_trans_t *tp)
510 {
511         return;
512 }
513
514 /*
515  * Quotaoff items have no locking, so just return success.
516  */
517 /*ARGSUSED*/
518 STATIC uint
519 xfs_qm_qoff_logitem_trylock(xfs_qoff_logitem_t *qf)
520 {
521         return XFS_ITEM_LOCKED;
522 }
523
524 /*
525  * Quotaoff items have no locking or pushing, so return failure
526  * so that the caller doesn't bother with us.
527  */
528 /*ARGSUSED*/
529 STATIC void
530 xfs_qm_qoff_logitem_unlock(xfs_qoff_logitem_t *qf)
531 {
532         return;
533 }
534
535 /*
536  * The quotaoff-start-item is logged only once and cannot be moved in the log,
537  * so simply return the lsn at which it's been logged.
538  */
539 /*ARGSUSED*/
540 STATIC xfs_lsn_t
541 xfs_qm_qoff_logitem_committed(xfs_qoff_logitem_t *qf, xfs_lsn_t lsn)
542 {
543         return (lsn);
544 }
545
546 /*
547  * There isn't much you can do to push on an quotaoff item.  It is simply
548  * stuck waiting for the log to be flushed to disk.
549  */
550 /*ARGSUSED*/
551 STATIC void
552 xfs_qm_qoff_logitem_push(xfs_qoff_logitem_t *qf)
553 {
554         return;
555 }
556
557
558 /*ARGSUSED*/
559 STATIC xfs_lsn_t
560 xfs_qm_qoffend_logitem_committed(
561         xfs_qoff_logitem_t *qfe,
562         xfs_lsn_t lsn)
563 {
564         xfs_qoff_logitem_t      *qfs;
565         SPLDECL(s);
566
567         qfs = qfe->qql_start_lip;
568         AIL_LOCK(qfs->qql_item.li_mountp,s);
569         /*
570          * Delete the qoff-start logitem from the AIL.
571          * xfs_trans_delete_ail() drops the AIL lock.
572          */
573         xfs_trans_delete_ail(qfs->qql_item.li_mountp, (xfs_log_item_t *)qfs, s);
574         kmem_free(qfs, sizeof(xfs_qoff_logitem_t));
575         kmem_free(qfe, sizeof(xfs_qoff_logitem_t));
576         return (xfs_lsn_t)-1;
577 }
578
579 /*
580  * XXX rcc - don't know quite what to do with this.  I think we can
581  * just ignore it.  The only time that isn't the case is if we allow
582  * the client to somehow see that quotas have been turned off in which
583  * we can't allow that to get back until the quotaoff hits the disk.
584  * So how would that happen?  Also, do we need different routines for
585  * quotaoff start and quotaoff end?  I suspect the answer is yes but
586  * to be sure, I need to look at the recovery code and see how quota off
587  * recovery is handled (do we roll forward or back or do something else).
588  * If we roll forwards or backwards, then we need two separate routines,
589  * one that does nothing and one that stamps in the lsn that matters
590  * (truly makes the quotaoff irrevocable).  If we do something else,
591  * then maybe we don't need two.
592  */
593 /* ARGSUSED */
594 STATIC void
595 xfs_qm_qoff_logitem_committing(xfs_qoff_logitem_t *qip, xfs_lsn_t commit_lsn)
596 {
597         return;
598 }
599
600 /* ARGSUSED */
601 STATIC void
602 xfs_qm_qoffend_logitem_committing(xfs_qoff_logitem_t *qip, xfs_lsn_t commit_lsn)
603 {
604         return;
605 }
606
607 static struct xfs_item_ops xfs_qm_qoffend_logitem_ops = {
608         .iop_size       = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_size,
609         .iop_format     = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*))
610                                         xfs_qm_qoff_logitem_format,
611         .iop_pin        = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_pin,
612         .iop_unpin      = (void(*)(xfs_log_item_t* ,int))
613                                         xfs_qm_qoff_logitem_unpin,
614         .iop_unpin_remove = (void(*)(xfs_log_item_t*,xfs_trans_t*))
615                                         xfs_qm_qoff_logitem_unpin_remove,
616         .iop_trylock    = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_trylock,
617         .iop_unlock     = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_unlock,
618         .iop_committed  = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t))
619                                         xfs_qm_qoffend_logitem_committed,
620         .iop_push       = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_push,
621         .iop_pushbuf    = NULL,
622         .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t))
623                                         xfs_qm_qoffend_logitem_committing
624 };
625
626 /*
627  * This is the ops vector shared by all quotaoff-start log items.
628  */
629 static struct xfs_item_ops xfs_qm_qoff_logitem_ops = {
630         .iop_size       = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_size,
631         .iop_format     = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*))
632                                         xfs_qm_qoff_logitem_format,
633         .iop_pin        = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_pin,
634         .iop_unpin      = (void(*)(xfs_log_item_t*, int))
635                                         xfs_qm_qoff_logitem_unpin,
636         .iop_unpin_remove = (void(*)(xfs_log_item_t*,xfs_trans_t*))
637                                         xfs_qm_qoff_logitem_unpin_remove,
638         .iop_trylock    = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_trylock,
639         .iop_unlock     = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_unlock,
640         .iop_committed  = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t))
641                                         xfs_qm_qoff_logitem_committed,
642         .iop_push       = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_push,
643         .iop_pushbuf    = NULL,
644         .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t))
645                                         xfs_qm_qoff_logitem_committing
646 };
647
648 /*
649  * Allocate and initialize an quotaoff item of the correct quota type(s).
650  */
651 xfs_qoff_logitem_t *
652 xfs_qm_qoff_logitem_init(
653         struct xfs_mount *mp,
654         xfs_qoff_logitem_t *start,
655         uint flags)
656 {
657         xfs_qoff_logitem_t      *qf;
658
659         qf = (xfs_qoff_logitem_t*) kmem_zalloc(sizeof(xfs_qoff_logitem_t), KM_SLEEP);
660
661         qf->qql_item.li_type = XFS_LI_QUOTAOFF;
662         if (start)
663                 qf->qql_item.li_ops = &xfs_qm_qoffend_logitem_ops;
664         else
665                 qf->qql_item.li_ops = &xfs_qm_qoff_logitem_ops;
666         qf->qql_item.li_mountp = mp;
667         qf->qql_format.qf_type = XFS_LI_QUOTAOFF;
668         qf->qql_format.qf_flags = flags;
669         qf->qql_start_lip = start;
670         return (qf);
671 }