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1da177e4 | 1 | /* |
4ce3121f NS |
2 | * Copyright (c) 2000-2003 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
4ce3121f NS |
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 | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
4ce3121f NS |
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. | |
1da177e4 | 13 | * |
4ce3121f NS |
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 | |
1da177e4 | 17 | */ |
1da177e4 LT |
18 | #include "xfs.h" |
19 | #include "xfs_fs.h" | |
a844f451 | 20 | #include "xfs_bit.h" |
1da177e4 | 21 | #include "xfs_log.h" |
a844f451 | 22 | #include "xfs_inum.h" |
1da177e4 LT |
23 | #include "xfs_trans.h" |
24 | #include "xfs_sb.h" | |
25 | #include "xfs_ag.h" | |
1da177e4 LT |
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" | |
1da177e4 | 31 | #include "xfs_bmap_btree.h" |
a844f451 | 32 | #include "xfs_alloc_btree.h" |
1da177e4 | 33 | #include "xfs_ialloc_btree.h" |
1da177e4 | 34 | #include "xfs_dir2_sf.h" |
a844f451 | 35 | #include "xfs_attr_sf.h" |
1da177e4 LT |
36 | #include "xfs_dinode.h" |
37 | #include "xfs_inode.h" | |
38 | #include "xfs_bmap.h" | |
a844f451 NS |
39 | #include "xfs_btree.h" |
40 | #include "xfs_ialloc.h" | |
1da177e4 LT |
41 | #include "xfs_rtalloc.h" |
42 | #include "xfs_error.h" | |
43 | #include "xfs_itable.h" | |
44 | #include "xfs_rw.h" | |
1da177e4 LT |
45 | #include "xfs_attr.h" |
46 | #include "xfs_buf_item.h" | |
47 | #include "xfs_trans_priv.h" | |
1da177e4 LT |
48 | #include "xfs_qm.h" |
49 | ||
1da177e4 LT |
50 | /* |
51 | * returns the number of iovecs needed to log the given dquot item. | |
52 | */ | |
53 | /* ARGSUSED */ | |
54 | STATIC uint | |
55 | xfs_qm_dquot_logitem_size( | |
56 | xfs_dq_logitem_t *logitem) | |
57 | { | |
58 | /* | |
59 | * we need only two iovecs, one for the format, one for the real thing | |
60 | */ | |
61 | return (2); | |
62 | } | |
63 | ||
64 | /* | |
65 | * fills in the vector of log iovecs for the given dquot log item. | |
66 | */ | |
67 | STATIC void | |
68 | xfs_qm_dquot_logitem_format( | |
69 | xfs_dq_logitem_t *logitem, | |
70 | xfs_log_iovec_t *logvec) | |
71 | { | |
72 | ASSERT(logitem); | |
73 | ASSERT(logitem->qli_dquot); | |
74 | ||
75 | logvec->i_addr = (xfs_caddr_t)&logitem->qli_format; | |
76 | logvec->i_len = sizeof(xfs_dq_logformat_t); | |
4139b3b3 | 77 | logvec->i_type = XLOG_REG_TYPE_QFORMAT; |
1da177e4 LT |
78 | logvec++; |
79 | logvec->i_addr = (xfs_caddr_t)&logitem->qli_dquot->q_core; | |
80 | logvec->i_len = sizeof(xfs_disk_dquot_t); | |
4139b3b3 | 81 | logvec->i_type = XLOG_REG_TYPE_DQUOT; |
1da177e4 LT |
82 | |
83 | ASSERT(2 == logitem->qli_item.li_desc->lid_size); | |
84 | logitem->qli_format.qlf_size = 2; | |
85 | ||
86 | } | |
87 | ||
88 | /* | |
89 | * Increment the pin count of the given dquot. | |
1da177e4 LT |
90 | */ |
91 | STATIC void | |
92 | xfs_qm_dquot_logitem_pin( | |
93 | xfs_dq_logitem_t *logitem) | |
94 | { | |
bc3048e3 | 95 | xfs_dquot_t *dqp = logitem->qli_dquot; |
1da177e4 | 96 | |
1da177e4 | 97 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
d1de8021 | 98 | atomic_inc(&dqp->q_pincount); |
1da177e4 LT |
99 | } |
100 | ||
101 | /* | |
102 | * Decrement the pin count of the given dquot, and wake up | |
103 | * anyone in xfs_dqwait_unpin() if the count goes to 0. The | |
bc3048e3 PL |
104 | * dquot must have been previously pinned with a call to |
105 | * xfs_qm_dquot_logitem_pin(). | |
1da177e4 LT |
106 | */ |
107 | /* ARGSUSED */ | |
108 | STATIC void | |
109 | xfs_qm_dquot_logitem_unpin( | |
110 | xfs_dq_logitem_t *logitem, | |
111 | int stale) | |
112 | { | |
bc3048e3 | 113 | xfs_dquot_t *dqp = logitem->qli_dquot; |
1da177e4 | 114 | |
bc3048e3 PL |
115 | ASSERT(atomic_read(&dqp->q_pincount) > 0); |
116 | if (atomic_dec_and_test(&dqp->q_pincount)) | |
117 | wake_up(&dqp->q_pinwait); | |
1da177e4 LT |
118 | } |
119 | ||
120 | /* ARGSUSED */ | |
121 | STATIC void | |
122 | xfs_qm_dquot_logitem_unpin_remove( | |
123 | xfs_dq_logitem_t *logitem, | |
124 | xfs_trans_t *tp) | |
125 | { | |
126 | xfs_qm_dquot_logitem_unpin(logitem, 0); | |
127 | } | |
128 | ||
129 | /* | |
130 | * Given the logitem, this writes the corresponding dquot entry to disk | |
131 | * asynchronously. This is called with the dquot entry securely locked; | |
132 | * we simply get xfs_qm_dqflush() to do the work, and unlock the dquot | |
133 | * at the end. | |
134 | */ | |
135 | STATIC void | |
136 | xfs_qm_dquot_logitem_push( | |
137 | xfs_dq_logitem_t *logitem) | |
138 | { | |
139 | xfs_dquot_t *dqp; | |
3c56836f | 140 | int error; |
1da177e4 LT |
141 | |
142 | dqp = logitem->qli_dquot; | |
143 | ||
144 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
e1f49cf2 | 145 | ASSERT(!completion_done(&dqp->q_flush)); |
1da177e4 LT |
146 | |
147 | /* | |
148 | * Since we were able to lock the dquot's flush lock and | |
149 | * we found it on the AIL, the dquot must be dirty. This | |
150 | * is because the dquot is removed from the AIL while still | |
151 | * holding the flush lock in xfs_dqflush_done(). Thus, if | |
152 | * we found it in the AIL and were able to obtain the flush | |
153 | * lock without sleeping, then there must not have been | |
154 | * anyone in the process of flushing the dquot. | |
155 | */ | |
20026d92 | 156 | error = xfs_qm_dqflush(dqp, 0); |
3c56836f DC |
157 | if (error) |
158 | xfs_fs_cmn_err(CE_WARN, dqp->q_mount, | |
159 | "xfs_qm_dquot_logitem_push: push error %d on dqp %p", | |
160 | error, dqp); | |
1da177e4 LT |
161 | xfs_dqunlock(dqp); |
162 | } | |
163 | ||
164 | /*ARGSUSED*/ | |
165 | STATIC xfs_lsn_t | |
166 | xfs_qm_dquot_logitem_committed( | |
167 | xfs_dq_logitem_t *l, | |
168 | xfs_lsn_t lsn) | |
169 | { | |
170 | /* | |
171 | * We always re-log the entire dquot when it becomes dirty, | |
172 | * so, the latest copy _is_ the only one that matters. | |
173 | */ | |
174 | return (lsn); | |
175 | } | |
176 | ||
177 | ||
178 | /* | |
179 | * This is called to wait for the given dquot to be unpinned. | |
180 | * Most of these pin/unpin routines are plagiarized from inode code. | |
181 | */ | |
182 | void | |
183 | xfs_qm_dqunpin_wait( | |
184 | xfs_dquot_t *dqp) | |
185 | { | |
1da177e4 | 186 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
bc3048e3 | 187 | if (atomic_read(&dqp->q_pincount) == 0) |
1da177e4 | 188 | return; |
1da177e4 LT |
189 | |
190 | /* | |
191 | * Give the log a push so we don't wait here too long. | |
192 | */ | |
a14a348b | 193 | xfs_log_force(dqp->q_mount, 0); |
bc3048e3 | 194 | wait_event(dqp->q_pinwait, (atomic_read(&dqp->q_pincount) == 0)); |
1da177e4 LT |
195 | } |
196 | ||
197 | /* | |
198 | * This is called when IOP_TRYLOCK returns XFS_ITEM_PUSHBUF to indicate that | |
199 | * the dquot is locked by us, but the flush lock isn't. So, here we are | |
200 | * going to see if the relevant dquot buffer is incore, waiting on DELWRI. | |
201 | * If so, we want to push it out to help us take this item off the AIL as soon | |
202 | * as possible. | |
203 | * | |
287f3dad DD |
204 | * We must not be holding the AIL lock at this point. Calling incore() to |
205 | * search the buffer cache can be a time consuming thing, and AIL lock is a | |
1da177e4 LT |
206 | * spinlock. |
207 | */ | |
208 | STATIC void | |
209 | xfs_qm_dquot_logitem_pushbuf( | |
210 | xfs_dq_logitem_t *qip) | |
211 | { | |
212 | xfs_dquot_t *dqp; | |
213 | xfs_mount_t *mp; | |
214 | xfs_buf_t *bp; | |
1da177e4 LT |
215 | |
216 | dqp = qip->qli_dquot; | |
217 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
218 | ||
1da177e4 LT |
219 | /* |
220 | * If flushlock isn't locked anymore, chances are that the | |
221 | * inode flush completed and the inode was taken off the AIL. | |
222 | * So, just get out. | |
223 | */ | |
e1f49cf2 | 224 | if (completion_done(&dqp->q_flush) || |
1da177e4 | 225 | ((qip->qli_item.li_flags & XFS_LI_IN_AIL) == 0)) { |
1da177e4 LT |
226 | xfs_dqunlock(dqp); |
227 | return; | |
228 | } | |
229 | mp = dqp->q_mount; | |
230 | bp = xfs_incore(mp->m_ddev_targp, qip->qli_format.qlf_blkno, | |
0cadda1c | 231 | XFS_QI_DQCHUNKLEN(mp), XBF_TRYLOCK); |
d808f617 DC |
232 | xfs_dqunlock(dqp); |
233 | if (!bp) | |
1da177e4 | 234 | return; |
d808f617 DC |
235 | if (XFS_BUF_ISDELAYWRITE(bp)) |
236 | xfs_buf_delwri_promote(bp); | |
237 | xfs_buf_relse(bp); | |
238 | return; | |
1da177e4 | 239 | |
1da177e4 LT |
240 | } |
241 | ||
242 | /* | |
243 | * This is called to attempt to lock the dquot associated with this | |
244 | * dquot log item. Don't sleep on the dquot lock or the flush lock. | |
245 | * If the flush lock is already held, indicating that the dquot has | |
246 | * been or is in the process of being flushed, then see if we can | |
247 | * find the dquot's buffer in the buffer cache without sleeping. If | |
248 | * we can and it is marked delayed write, then we want to send it out. | |
249 | * We delay doing so until the push routine, though, to avoid sleeping | |
250 | * in any device strategy routines. | |
251 | */ | |
252 | STATIC uint | |
253 | xfs_qm_dquot_logitem_trylock( | |
254 | xfs_dq_logitem_t *qip) | |
255 | { | |
256 | xfs_dquot_t *dqp; | |
1da177e4 LT |
257 | |
258 | dqp = qip->qli_dquot; | |
bc3048e3 | 259 | if (atomic_read(&dqp->q_pincount) > 0) |
d808f617 | 260 | return XFS_ITEM_PINNED; |
1da177e4 LT |
261 | |
262 | if (! xfs_qm_dqlock_nowait(dqp)) | |
d808f617 | 263 | return XFS_ITEM_LOCKED; |
1da177e4 | 264 | |
e1f49cf2 | 265 | if (!xfs_dqflock_nowait(dqp)) { |
1da177e4 | 266 | /* |
d808f617 DC |
267 | * dquot has already been flushed to the backing buffer, |
268 | * leave it locked, pushbuf routine will unlock it. | |
1da177e4 | 269 | */ |
d808f617 | 270 | return XFS_ITEM_PUSHBUF; |
1da177e4 LT |
271 | } |
272 | ||
273 | ASSERT(qip->qli_item.li_flags & XFS_LI_IN_AIL); | |
d808f617 | 274 | return XFS_ITEM_SUCCESS; |
1da177e4 LT |
275 | } |
276 | ||
277 | ||
278 | /* | |
279 | * Unlock the dquot associated with the log item. | |
280 | * Clear the fields of the dquot and dquot log item that | |
281 | * are specific to the current transaction. If the | |
282 | * hold flags is set, do not unlock the dquot. | |
283 | */ | |
284 | STATIC void | |
285 | xfs_qm_dquot_logitem_unlock( | |
286 | xfs_dq_logitem_t *ql) | |
287 | { | |
288 | xfs_dquot_t *dqp; | |
289 | ||
290 | ASSERT(ql != NULL); | |
291 | dqp = ql->qli_dquot; | |
292 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
293 | ||
294 | /* | |
295 | * Clear the transaction pointer in the dquot | |
296 | */ | |
297 | dqp->q_transp = NULL; | |
298 | ||
299 | /* | |
300 | * dquots are never 'held' from getting unlocked at the end of | |
301 | * a transaction. Their locking and unlocking is hidden inside the | |
302 | * transaction layer, within trans_commit. Hence, no LI_HOLD flag | |
303 | * for the logitem. | |
304 | */ | |
305 | xfs_dqunlock(dqp); | |
306 | } | |
307 | ||
308 | ||
1da177e4 LT |
309 | /* |
310 | * this needs to stamp an lsn into the dquot, I think. | |
311 | * rpc's that look at user dquot's would then have to | |
312 | * push on the dependency recorded in the dquot | |
313 | */ | |
314 | /* ARGSUSED */ | |
315 | STATIC void | |
316 | xfs_qm_dquot_logitem_committing( | |
317 | xfs_dq_logitem_t *l, | |
318 | xfs_lsn_t lsn) | |
319 | { | |
320 | return; | |
321 | } | |
322 | ||
323 | ||
324 | /* | |
325 | * This is the ops vector for dquots | |
326 | */ | |
7989cb8e | 327 | static struct xfs_item_ops xfs_dquot_item_ops = { |
1da177e4 LT |
328 | .iop_size = (uint(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_size, |
329 | .iop_format = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*)) | |
330 | xfs_qm_dquot_logitem_format, | |
331 | .iop_pin = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_pin, | |
332 | .iop_unpin = (void(*)(xfs_log_item_t*, int)) | |
333 | xfs_qm_dquot_logitem_unpin, | |
334 | .iop_unpin_remove = (void(*)(xfs_log_item_t*, xfs_trans_t*)) | |
335 | xfs_qm_dquot_logitem_unpin_remove, | |
336 | .iop_trylock = (uint(*)(xfs_log_item_t*)) | |
337 | xfs_qm_dquot_logitem_trylock, | |
338 | .iop_unlock = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_unlock, | |
339 | .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t)) | |
340 | xfs_qm_dquot_logitem_committed, | |
341 | .iop_push = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_push, | |
1da177e4 LT |
342 | .iop_pushbuf = (void(*)(xfs_log_item_t*)) |
343 | xfs_qm_dquot_logitem_pushbuf, | |
344 | .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t)) | |
345 | xfs_qm_dquot_logitem_committing | |
346 | }; | |
347 | ||
348 | /* | |
349 | * Initialize the dquot log item for a newly allocated dquot. | |
350 | * The dquot isn't locked at this point, but it isn't on any of the lists | |
351 | * either, so we don't care. | |
352 | */ | |
353 | void | |
354 | xfs_qm_dquot_logitem_init( | |
355 | struct xfs_dquot *dqp) | |
356 | { | |
357 | xfs_dq_logitem_t *lp; | |
358 | lp = &dqp->q_logitem; | |
359 | ||
360 | lp->qli_item.li_type = XFS_LI_DQUOT; | |
361 | lp->qli_item.li_ops = &xfs_dquot_item_ops; | |
362 | lp->qli_item.li_mountp = dqp->q_mount; | |
363 | lp->qli_dquot = dqp; | |
364 | lp->qli_format.qlf_type = XFS_LI_DQUOT; | |
1149d96a | 365 | lp->qli_format.qlf_id = be32_to_cpu(dqp->q_core.d_id); |
1da177e4 LT |
366 | lp->qli_format.qlf_blkno = dqp->q_blkno; |
367 | lp->qli_format.qlf_len = 1; | |
368 | /* | |
369 | * This is just the offset of this dquot within its buffer | |
370 | * (which is currently 1 FSB and probably won't change). | |
371 | * Hence 32 bits for this offset should be just fine. | |
372 | * Alternatively, we can store (bufoffset / sizeof(xfs_dqblk_t)) | |
373 | * here, and recompute it at recovery time. | |
374 | */ | |
375 | lp->qli_format.qlf_boffset = (__uint32_t)dqp->q_bufoffset; | |
376 | } | |
377 | ||
378 | /*------------------ QUOTAOFF LOG ITEMS -------------------*/ | |
379 | ||
380 | /* | |
381 | * This returns the number of iovecs needed to log the given quotaoff item. | |
382 | * We only need 1 iovec for an quotaoff item. It just logs the | |
383 | * quotaoff_log_format structure. | |
384 | */ | |
385 | /*ARGSUSED*/ | |
386 | STATIC uint | |
387 | xfs_qm_qoff_logitem_size(xfs_qoff_logitem_t *qf) | |
388 | { | |
389 | return (1); | |
390 | } | |
391 | ||
392 | /* | |
393 | * This is called to fill in the vector of log iovecs for the | |
394 | * given quotaoff log item. We use only 1 iovec, and we point that | |
395 | * at the quotaoff_log_format structure embedded in the quotaoff item. | |
396 | * It is at this point that we assert that all of the extent | |
397 | * slots in the quotaoff item have been filled. | |
398 | */ | |
399 | STATIC void | |
400 | xfs_qm_qoff_logitem_format(xfs_qoff_logitem_t *qf, | |
401 | xfs_log_iovec_t *log_vector) | |
402 | { | |
403 | ASSERT(qf->qql_format.qf_type == XFS_LI_QUOTAOFF); | |
404 | ||
405 | log_vector->i_addr = (xfs_caddr_t)&(qf->qql_format); | |
406 | log_vector->i_len = sizeof(xfs_qoff_logitem_t); | |
4139b3b3 | 407 | log_vector->i_type = XLOG_REG_TYPE_QUOTAOFF; |
1da177e4 LT |
408 | qf->qql_format.qf_size = 1; |
409 | } | |
410 | ||
411 | ||
412 | /* | |
413 | * Pinning has no meaning for an quotaoff item, so just return. | |
414 | */ | |
415 | /*ARGSUSED*/ | |
416 | STATIC void | |
417 | xfs_qm_qoff_logitem_pin(xfs_qoff_logitem_t *qf) | |
418 | { | |
419 | return; | |
420 | } | |
421 | ||
422 | ||
423 | /* | |
424 | * Since pinning has no meaning for an quotaoff item, unpinning does | |
425 | * not either. | |
426 | */ | |
427 | /*ARGSUSED*/ | |
428 | STATIC void | |
429 | xfs_qm_qoff_logitem_unpin(xfs_qoff_logitem_t *qf, int stale) | |
430 | { | |
431 | return; | |
432 | } | |
433 | ||
434 | /*ARGSUSED*/ | |
435 | STATIC void | |
436 | xfs_qm_qoff_logitem_unpin_remove(xfs_qoff_logitem_t *qf, xfs_trans_t *tp) | |
437 | { | |
438 | return; | |
439 | } | |
440 | ||
441 | /* | |
442 | * Quotaoff items have no locking, so just return success. | |
443 | */ | |
444 | /*ARGSUSED*/ | |
445 | STATIC uint | |
446 | xfs_qm_qoff_logitem_trylock(xfs_qoff_logitem_t *qf) | |
447 | { | |
448 | return XFS_ITEM_LOCKED; | |
449 | } | |
450 | ||
451 | /* | |
452 | * Quotaoff items have no locking or pushing, so return failure | |
453 | * so that the caller doesn't bother with us. | |
454 | */ | |
455 | /*ARGSUSED*/ | |
456 | STATIC void | |
457 | xfs_qm_qoff_logitem_unlock(xfs_qoff_logitem_t *qf) | |
458 | { | |
459 | return; | |
460 | } | |
461 | ||
462 | /* | |
463 | * The quotaoff-start-item is logged only once and cannot be moved in the log, | |
464 | * so simply return the lsn at which it's been logged. | |
465 | */ | |
466 | /*ARGSUSED*/ | |
467 | STATIC xfs_lsn_t | |
468 | xfs_qm_qoff_logitem_committed(xfs_qoff_logitem_t *qf, xfs_lsn_t lsn) | |
469 | { | |
470 | return (lsn); | |
471 | } | |
472 | ||
1da177e4 LT |
473 | /* |
474 | * There isn't much you can do to push on an quotaoff item. It is simply | |
475 | * stuck waiting for the log to be flushed to disk. | |
476 | */ | |
477 | /*ARGSUSED*/ | |
478 | STATIC void | |
479 | xfs_qm_qoff_logitem_push(xfs_qoff_logitem_t *qf) | |
480 | { | |
481 | return; | |
482 | } | |
483 | ||
484 | ||
485 | /*ARGSUSED*/ | |
486 | STATIC xfs_lsn_t | |
487 | xfs_qm_qoffend_logitem_committed( | |
488 | xfs_qoff_logitem_t *qfe, | |
489 | xfs_lsn_t lsn) | |
490 | { | |
491 | xfs_qoff_logitem_t *qfs; | |
783a2f65 | 492 | struct xfs_ail *ailp; |
1da177e4 LT |
493 | |
494 | qfs = qfe->qql_start_lip; | |
783a2f65 DC |
495 | ailp = qfs->qql_item.li_ailp; |
496 | spin_lock(&ailp->xa_lock); | |
1da177e4 LT |
497 | /* |
498 | * Delete the qoff-start logitem from the AIL. | |
783a2f65 | 499 | * xfs_trans_ail_delete() drops the AIL lock. |
1da177e4 | 500 | */ |
783a2f65 | 501 | xfs_trans_ail_delete(ailp, (xfs_log_item_t *)qfs); |
f0e2d93c DV |
502 | kmem_free(qfs); |
503 | kmem_free(qfe); | |
1da177e4 LT |
504 | return (xfs_lsn_t)-1; |
505 | } | |
506 | ||
507 | /* | |
508 | * XXX rcc - don't know quite what to do with this. I think we can | |
509 | * just ignore it. The only time that isn't the case is if we allow | |
510 | * the client to somehow see that quotas have been turned off in which | |
511 | * we can't allow that to get back until the quotaoff hits the disk. | |
512 | * So how would that happen? Also, do we need different routines for | |
513 | * quotaoff start and quotaoff end? I suspect the answer is yes but | |
514 | * to be sure, I need to look at the recovery code and see how quota off | |
515 | * recovery is handled (do we roll forward or back or do something else). | |
516 | * If we roll forwards or backwards, then we need two separate routines, | |
517 | * one that does nothing and one that stamps in the lsn that matters | |
518 | * (truly makes the quotaoff irrevocable). If we do something else, | |
519 | * then maybe we don't need two. | |
520 | */ | |
521 | /* ARGSUSED */ | |
522 | STATIC void | |
523 | xfs_qm_qoff_logitem_committing(xfs_qoff_logitem_t *qip, xfs_lsn_t commit_lsn) | |
524 | { | |
525 | return; | |
526 | } | |
527 | ||
528 | /* ARGSUSED */ | |
529 | STATIC void | |
530 | xfs_qm_qoffend_logitem_committing(xfs_qoff_logitem_t *qip, xfs_lsn_t commit_lsn) | |
531 | { | |
532 | return; | |
533 | } | |
534 | ||
7989cb8e | 535 | static struct xfs_item_ops xfs_qm_qoffend_logitem_ops = { |
1da177e4 LT |
536 | .iop_size = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_size, |
537 | .iop_format = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*)) | |
538 | xfs_qm_qoff_logitem_format, | |
539 | .iop_pin = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_pin, | |
540 | .iop_unpin = (void(*)(xfs_log_item_t* ,int)) | |
541 | xfs_qm_qoff_logitem_unpin, | |
542 | .iop_unpin_remove = (void(*)(xfs_log_item_t*,xfs_trans_t*)) | |
543 | xfs_qm_qoff_logitem_unpin_remove, | |
544 | .iop_trylock = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_trylock, | |
545 | .iop_unlock = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_unlock, | |
546 | .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t)) | |
547 | xfs_qm_qoffend_logitem_committed, | |
548 | .iop_push = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_push, | |
1da177e4 LT |
549 | .iop_pushbuf = NULL, |
550 | .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t)) | |
551 | xfs_qm_qoffend_logitem_committing | |
552 | }; | |
553 | ||
554 | /* | |
555 | * This is the ops vector shared by all quotaoff-start log items. | |
556 | */ | |
7989cb8e | 557 | static struct xfs_item_ops xfs_qm_qoff_logitem_ops = { |
1da177e4 LT |
558 | .iop_size = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_size, |
559 | .iop_format = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*)) | |
560 | xfs_qm_qoff_logitem_format, | |
561 | .iop_pin = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_pin, | |
562 | .iop_unpin = (void(*)(xfs_log_item_t*, int)) | |
563 | xfs_qm_qoff_logitem_unpin, | |
564 | .iop_unpin_remove = (void(*)(xfs_log_item_t*,xfs_trans_t*)) | |
565 | xfs_qm_qoff_logitem_unpin_remove, | |
566 | .iop_trylock = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_trylock, | |
567 | .iop_unlock = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_unlock, | |
568 | .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t)) | |
569 | xfs_qm_qoff_logitem_committed, | |
570 | .iop_push = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_push, | |
1da177e4 LT |
571 | .iop_pushbuf = NULL, |
572 | .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t)) | |
573 | xfs_qm_qoff_logitem_committing | |
574 | }; | |
575 | ||
576 | /* | |
577 | * Allocate and initialize an quotaoff item of the correct quota type(s). | |
578 | */ | |
579 | xfs_qoff_logitem_t * | |
580 | xfs_qm_qoff_logitem_init( | |
581 | struct xfs_mount *mp, | |
582 | xfs_qoff_logitem_t *start, | |
583 | uint flags) | |
584 | { | |
585 | xfs_qoff_logitem_t *qf; | |
586 | ||
587 | qf = (xfs_qoff_logitem_t*) kmem_zalloc(sizeof(xfs_qoff_logitem_t), KM_SLEEP); | |
588 | ||
589 | qf->qql_item.li_type = XFS_LI_QUOTAOFF; | |
590 | if (start) | |
591 | qf->qql_item.li_ops = &xfs_qm_qoffend_logitem_ops; | |
592 | else | |
593 | qf->qql_item.li_ops = &xfs_qm_qoff_logitem_ops; | |
594 | qf->qql_item.li_mountp = mp; | |
595 | qf->qql_format.qf_type = XFS_LI_QUOTAOFF; | |
596 | qf->qql_format.qf_flags = flags; | |
597 | qf->qql_start_lip = start; | |
598 | return (qf); | |
599 | } |