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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 | */ | |
3c56836f DC |
156 | error = xfs_qm_dqflush(dqp, XFS_QMOPT_DELWRI); |
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; | |
215 | uint dopush; | |
216 | ||
217 | dqp = qip->qli_dquot; | |
218 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
219 | ||
220 | /* | |
221 | * The qli_pushbuf_flag keeps others from | |
222 | * trying to duplicate our effort. | |
223 | */ | |
224 | ASSERT(qip->qli_pushbuf_flag != 0); | |
3762ec6b | 225 | ASSERT(qip->qli_push_owner == current_pid()); |
1da177e4 LT |
226 | |
227 | /* | |
228 | * If flushlock isn't locked anymore, chances are that the | |
229 | * inode flush completed and the inode was taken off the AIL. | |
230 | * So, just get out. | |
231 | */ | |
e1f49cf2 | 232 | if (completion_done(&dqp->q_flush) || |
1da177e4 LT |
233 | ((qip->qli_item.li_flags & XFS_LI_IN_AIL) == 0)) { |
234 | qip->qli_pushbuf_flag = 0; | |
235 | xfs_dqunlock(dqp); | |
236 | return; | |
237 | } | |
238 | mp = dqp->q_mount; | |
239 | bp = xfs_incore(mp->m_ddev_targp, qip->qli_format.qlf_blkno, | |
0cadda1c | 240 | XFS_QI_DQCHUNKLEN(mp), XBF_TRYLOCK); |
1da177e4 LT |
241 | if (bp != NULL) { |
242 | if (XFS_BUF_ISDELAYWRITE(bp)) { | |
243 | dopush = ((qip->qli_item.li_flags & XFS_LI_IN_AIL) && | |
e1f49cf2 | 244 | !completion_done(&dqp->q_flush)); |
1da177e4 LT |
245 | qip->qli_pushbuf_flag = 0; |
246 | xfs_dqunlock(dqp); | |
247 | ||
a14a348b CH |
248 | if (XFS_BUF_ISPINNED(bp)) |
249 | xfs_log_force(mp, 0); | |
250 | ||
1da177e4 | 251 | if (dopush) { |
db7a19f2 | 252 | int error; |
1da177e4 LT |
253 | #ifdef XFSRACEDEBUG |
254 | delay_for_intr(); | |
255 | delay(300); | |
256 | #endif | |
db7a19f2 DC |
257 | error = xfs_bawrite(mp, bp); |
258 | if (error) | |
259 | xfs_fs_cmn_err(CE_WARN, mp, | |
260 | "xfs_qm_dquot_logitem_pushbuf: pushbuf error %d on qip %p, bp %p", | |
261 | error, qip, bp); | |
1da177e4 LT |
262 | } else { |
263 | xfs_buf_relse(bp); | |
264 | } | |
265 | } else { | |
266 | qip->qli_pushbuf_flag = 0; | |
267 | xfs_dqunlock(dqp); | |
268 | xfs_buf_relse(bp); | |
269 | } | |
270 | return; | |
271 | } | |
272 | ||
273 | qip->qli_pushbuf_flag = 0; | |
274 | xfs_dqunlock(dqp); | |
275 | } | |
276 | ||
277 | /* | |
278 | * This is called to attempt to lock the dquot associated with this | |
279 | * dquot log item. Don't sleep on the dquot lock or the flush lock. | |
280 | * If the flush lock is already held, indicating that the dquot has | |
281 | * been or is in the process of being flushed, then see if we can | |
282 | * find the dquot's buffer in the buffer cache without sleeping. If | |
283 | * we can and it is marked delayed write, then we want to send it out. | |
284 | * We delay doing so until the push routine, though, to avoid sleeping | |
285 | * in any device strategy routines. | |
286 | */ | |
287 | STATIC uint | |
288 | xfs_qm_dquot_logitem_trylock( | |
289 | xfs_dq_logitem_t *qip) | |
290 | { | |
291 | xfs_dquot_t *dqp; | |
292 | uint retval; | |
293 | ||
294 | dqp = qip->qli_dquot; | |
bc3048e3 | 295 | if (atomic_read(&dqp->q_pincount) > 0) |
1da177e4 LT |
296 | return (XFS_ITEM_PINNED); |
297 | ||
298 | if (! xfs_qm_dqlock_nowait(dqp)) | |
299 | return (XFS_ITEM_LOCKED); | |
300 | ||
301 | retval = XFS_ITEM_SUCCESS; | |
e1f49cf2 | 302 | if (!xfs_dqflock_nowait(dqp)) { |
1da177e4 LT |
303 | /* |
304 | * The dquot is already being flushed. It may have been | |
305 | * flushed delayed write, however, and we don't want to | |
306 | * get stuck waiting for that to complete. So, we want to check | |
307 | * to see if we can lock the dquot's buffer without sleeping. | |
308 | * If we can and it is marked for delayed write, then we | |
309 | * hold it and send it out from the push routine. We don't | |
310 | * want to do that now since we might sleep in the device | |
311 | * strategy routine. We also don't want to grab the buffer lock | |
312 | * here because we'd like not to call into the buffer cache | |
287f3dad | 313 | * while holding the AIL lock. |
1da177e4 LT |
314 | * Make sure to only return PUSHBUF if we set pushbuf_flag |
315 | * ourselves. If someone else is doing it then we don't | |
316 | * want to go to the push routine and duplicate their efforts. | |
317 | */ | |
318 | if (qip->qli_pushbuf_flag == 0) { | |
319 | qip->qli_pushbuf_flag = 1; | |
320 | ASSERT(qip->qli_format.qlf_blkno == dqp->q_blkno); | |
321 | #ifdef DEBUG | |
3762ec6b | 322 | qip->qli_push_owner = current_pid(); |
1da177e4 LT |
323 | #endif |
324 | /* | |
325 | * The dquot is left locked. | |
326 | */ | |
327 | retval = XFS_ITEM_PUSHBUF; | |
328 | } else { | |
329 | retval = XFS_ITEM_FLUSHING; | |
330 | xfs_dqunlock_nonotify(dqp); | |
331 | } | |
332 | } | |
333 | ||
334 | ASSERT(qip->qli_item.li_flags & XFS_LI_IN_AIL); | |
335 | return (retval); | |
336 | } | |
337 | ||
338 | ||
339 | /* | |
340 | * Unlock the dquot associated with the log item. | |
341 | * Clear the fields of the dquot and dquot log item that | |
342 | * are specific to the current transaction. If the | |
343 | * hold flags is set, do not unlock the dquot. | |
344 | */ | |
345 | STATIC void | |
346 | xfs_qm_dquot_logitem_unlock( | |
347 | xfs_dq_logitem_t *ql) | |
348 | { | |
349 | xfs_dquot_t *dqp; | |
350 | ||
351 | ASSERT(ql != NULL); | |
352 | dqp = ql->qli_dquot; | |
353 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
354 | ||
355 | /* | |
356 | * Clear the transaction pointer in the dquot | |
357 | */ | |
358 | dqp->q_transp = NULL; | |
359 | ||
360 | /* | |
361 | * dquots are never 'held' from getting unlocked at the end of | |
362 | * a transaction. Their locking and unlocking is hidden inside the | |
363 | * transaction layer, within trans_commit. Hence, no LI_HOLD flag | |
364 | * for the logitem. | |
365 | */ | |
366 | xfs_dqunlock(dqp); | |
367 | } | |
368 | ||
369 | ||
1da177e4 LT |
370 | /* |
371 | * this needs to stamp an lsn into the dquot, I think. | |
372 | * rpc's that look at user dquot's would then have to | |
373 | * push on the dependency recorded in the dquot | |
374 | */ | |
375 | /* ARGSUSED */ | |
376 | STATIC void | |
377 | xfs_qm_dquot_logitem_committing( | |
378 | xfs_dq_logitem_t *l, | |
379 | xfs_lsn_t lsn) | |
380 | { | |
381 | return; | |
382 | } | |
383 | ||
384 | ||
385 | /* | |
386 | * This is the ops vector for dquots | |
387 | */ | |
7989cb8e | 388 | static struct xfs_item_ops xfs_dquot_item_ops = { |
1da177e4 LT |
389 | .iop_size = (uint(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_size, |
390 | .iop_format = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*)) | |
391 | xfs_qm_dquot_logitem_format, | |
392 | .iop_pin = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_pin, | |
393 | .iop_unpin = (void(*)(xfs_log_item_t*, int)) | |
394 | xfs_qm_dquot_logitem_unpin, | |
395 | .iop_unpin_remove = (void(*)(xfs_log_item_t*, xfs_trans_t*)) | |
396 | xfs_qm_dquot_logitem_unpin_remove, | |
397 | .iop_trylock = (uint(*)(xfs_log_item_t*)) | |
398 | xfs_qm_dquot_logitem_trylock, | |
399 | .iop_unlock = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_unlock, | |
400 | .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t)) | |
401 | xfs_qm_dquot_logitem_committed, | |
402 | .iop_push = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_push, | |
1da177e4 LT |
403 | .iop_pushbuf = (void(*)(xfs_log_item_t*)) |
404 | xfs_qm_dquot_logitem_pushbuf, | |
405 | .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t)) | |
406 | xfs_qm_dquot_logitem_committing | |
407 | }; | |
408 | ||
409 | /* | |
410 | * Initialize the dquot log item for a newly allocated dquot. | |
411 | * The dquot isn't locked at this point, but it isn't on any of the lists | |
412 | * either, so we don't care. | |
413 | */ | |
414 | void | |
415 | xfs_qm_dquot_logitem_init( | |
416 | struct xfs_dquot *dqp) | |
417 | { | |
418 | xfs_dq_logitem_t *lp; | |
419 | lp = &dqp->q_logitem; | |
420 | ||
421 | lp->qli_item.li_type = XFS_LI_DQUOT; | |
422 | lp->qli_item.li_ops = &xfs_dquot_item_ops; | |
423 | lp->qli_item.li_mountp = dqp->q_mount; | |
424 | lp->qli_dquot = dqp; | |
425 | lp->qli_format.qlf_type = XFS_LI_DQUOT; | |
1149d96a | 426 | lp->qli_format.qlf_id = be32_to_cpu(dqp->q_core.d_id); |
1da177e4 LT |
427 | lp->qli_format.qlf_blkno = dqp->q_blkno; |
428 | lp->qli_format.qlf_len = 1; | |
429 | /* | |
430 | * This is just the offset of this dquot within its buffer | |
431 | * (which is currently 1 FSB and probably won't change). | |
432 | * Hence 32 bits for this offset should be just fine. | |
433 | * Alternatively, we can store (bufoffset / sizeof(xfs_dqblk_t)) | |
434 | * here, and recompute it at recovery time. | |
435 | */ | |
436 | lp->qli_format.qlf_boffset = (__uint32_t)dqp->q_bufoffset; | |
437 | } | |
438 | ||
439 | /*------------------ QUOTAOFF LOG ITEMS -------------------*/ | |
440 | ||
441 | /* | |
442 | * This returns the number of iovecs needed to log the given quotaoff item. | |
443 | * We only need 1 iovec for an quotaoff item. It just logs the | |
444 | * quotaoff_log_format structure. | |
445 | */ | |
446 | /*ARGSUSED*/ | |
447 | STATIC uint | |
448 | xfs_qm_qoff_logitem_size(xfs_qoff_logitem_t *qf) | |
449 | { | |
450 | return (1); | |
451 | } | |
452 | ||
453 | /* | |
454 | * This is called to fill in the vector of log iovecs for the | |
455 | * given quotaoff log item. We use only 1 iovec, and we point that | |
456 | * at the quotaoff_log_format structure embedded in the quotaoff item. | |
457 | * It is at this point that we assert that all of the extent | |
458 | * slots in the quotaoff item have been filled. | |
459 | */ | |
460 | STATIC void | |
461 | xfs_qm_qoff_logitem_format(xfs_qoff_logitem_t *qf, | |
462 | xfs_log_iovec_t *log_vector) | |
463 | { | |
464 | ASSERT(qf->qql_format.qf_type == XFS_LI_QUOTAOFF); | |
465 | ||
466 | log_vector->i_addr = (xfs_caddr_t)&(qf->qql_format); | |
467 | log_vector->i_len = sizeof(xfs_qoff_logitem_t); | |
4139b3b3 | 468 | log_vector->i_type = XLOG_REG_TYPE_QUOTAOFF; |
1da177e4 LT |
469 | qf->qql_format.qf_size = 1; |
470 | } | |
471 | ||
472 | ||
473 | /* | |
474 | * Pinning has no meaning for an quotaoff item, so just return. | |
475 | */ | |
476 | /*ARGSUSED*/ | |
477 | STATIC void | |
478 | xfs_qm_qoff_logitem_pin(xfs_qoff_logitem_t *qf) | |
479 | { | |
480 | return; | |
481 | } | |
482 | ||
483 | ||
484 | /* | |
485 | * Since pinning has no meaning for an quotaoff item, unpinning does | |
486 | * not either. | |
487 | */ | |
488 | /*ARGSUSED*/ | |
489 | STATIC void | |
490 | xfs_qm_qoff_logitem_unpin(xfs_qoff_logitem_t *qf, int stale) | |
491 | { | |
492 | return; | |
493 | } | |
494 | ||
495 | /*ARGSUSED*/ | |
496 | STATIC void | |
497 | xfs_qm_qoff_logitem_unpin_remove(xfs_qoff_logitem_t *qf, xfs_trans_t *tp) | |
498 | { | |
499 | return; | |
500 | } | |
501 | ||
502 | /* | |
503 | * Quotaoff items have no locking, so just return success. | |
504 | */ | |
505 | /*ARGSUSED*/ | |
506 | STATIC uint | |
507 | xfs_qm_qoff_logitem_trylock(xfs_qoff_logitem_t *qf) | |
508 | { | |
509 | return XFS_ITEM_LOCKED; | |
510 | } | |
511 | ||
512 | /* | |
513 | * Quotaoff items have no locking or pushing, so return failure | |
514 | * so that the caller doesn't bother with us. | |
515 | */ | |
516 | /*ARGSUSED*/ | |
517 | STATIC void | |
518 | xfs_qm_qoff_logitem_unlock(xfs_qoff_logitem_t *qf) | |
519 | { | |
520 | return; | |
521 | } | |
522 | ||
523 | /* | |
524 | * The quotaoff-start-item is logged only once and cannot be moved in the log, | |
525 | * so simply return the lsn at which it's been logged. | |
526 | */ | |
527 | /*ARGSUSED*/ | |
528 | STATIC xfs_lsn_t | |
529 | xfs_qm_qoff_logitem_committed(xfs_qoff_logitem_t *qf, xfs_lsn_t lsn) | |
530 | { | |
531 | return (lsn); | |
532 | } | |
533 | ||
1da177e4 LT |
534 | /* |
535 | * There isn't much you can do to push on an quotaoff item. It is simply | |
536 | * stuck waiting for the log to be flushed to disk. | |
537 | */ | |
538 | /*ARGSUSED*/ | |
539 | STATIC void | |
540 | xfs_qm_qoff_logitem_push(xfs_qoff_logitem_t *qf) | |
541 | { | |
542 | return; | |
543 | } | |
544 | ||
545 | ||
546 | /*ARGSUSED*/ | |
547 | STATIC xfs_lsn_t | |
548 | xfs_qm_qoffend_logitem_committed( | |
549 | xfs_qoff_logitem_t *qfe, | |
550 | xfs_lsn_t lsn) | |
551 | { | |
552 | xfs_qoff_logitem_t *qfs; | |
783a2f65 | 553 | struct xfs_ail *ailp; |
1da177e4 LT |
554 | |
555 | qfs = qfe->qql_start_lip; | |
783a2f65 DC |
556 | ailp = qfs->qql_item.li_ailp; |
557 | spin_lock(&ailp->xa_lock); | |
1da177e4 LT |
558 | /* |
559 | * Delete the qoff-start logitem from the AIL. | |
783a2f65 | 560 | * xfs_trans_ail_delete() drops the AIL lock. |
1da177e4 | 561 | */ |
783a2f65 | 562 | xfs_trans_ail_delete(ailp, (xfs_log_item_t *)qfs); |
f0e2d93c DV |
563 | kmem_free(qfs); |
564 | kmem_free(qfe); | |
1da177e4 LT |
565 | return (xfs_lsn_t)-1; |
566 | } | |
567 | ||
568 | /* | |
569 | * XXX rcc - don't know quite what to do with this. I think we can | |
570 | * just ignore it. The only time that isn't the case is if we allow | |
571 | * the client to somehow see that quotas have been turned off in which | |
572 | * we can't allow that to get back until the quotaoff hits the disk. | |
573 | * So how would that happen? Also, do we need different routines for | |
574 | * quotaoff start and quotaoff end? I suspect the answer is yes but | |
575 | * to be sure, I need to look at the recovery code and see how quota off | |
576 | * recovery is handled (do we roll forward or back or do something else). | |
577 | * If we roll forwards or backwards, then we need two separate routines, | |
578 | * one that does nothing and one that stamps in the lsn that matters | |
579 | * (truly makes the quotaoff irrevocable). If we do something else, | |
580 | * then maybe we don't need two. | |
581 | */ | |
582 | /* ARGSUSED */ | |
583 | STATIC void | |
584 | xfs_qm_qoff_logitem_committing(xfs_qoff_logitem_t *qip, xfs_lsn_t commit_lsn) | |
585 | { | |
586 | return; | |
587 | } | |
588 | ||
589 | /* ARGSUSED */ | |
590 | STATIC void | |
591 | xfs_qm_qoffend_logitem_committing(xfs_qoff_logitem_t *qip, xfs_lsn_t commit_lsn) | |
592 | { | |
593 | return; | |
594 | } | |
595 | ||
7989cb8e | 596 | static struct xfs_item_ops xfs_qm_qoffend_logitem_ops = { |
1da177e4 LT |
597 | .iop_size = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_size, |
598 | .iop_format = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*)) | |
599 | xfs_qm_qoff_logitem_format, | |
600 | .iop_pin = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_pin, | |
601 | .iop_unpin = (void(*)(xfs_log_item_t* ,int)) | |
602 | xfs_qm_qoff_logitem_unpin, | |
603 | .iop_unpin_remove = (void(*)(xfs_log_item_t*,xfs_trans_t*)) | |
604 | xfs_qm_qoff_logitem_unpin_remove, | |
605 | .iop_trylock = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_trylock, | |
606 | .iop_unlock = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_unlock, | |
607 | .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t)) | |
608 | xfs_qm_qoffend_logitem_committed, | |
609 | .iop_push = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_push, | |
1da177e4 LT |
610 | .iop_pushbuf = NULL, |
611 | .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t)) | |
612 | xfs_qm_qoffend_logitem_committing | |
613 | }; | |
614 | ||
615 | /* | |
616 | * This is the ops vector shared by all quotaoff-start log items. | |
617 | */ | |
7989cb8e | 618 | static struct xfs_item_ops xfs_qm_qoff_logitem_ops = { |
1da177e4 LT |
619 | .iop_size = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_size, |
620 | .iop_format = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*)) | |
621 | xfs_qm_qoff_logitem_format, | |
622 | .iop_pin = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_pin, | |
623 | .iop_unpin = (void(*)(xfs_log_item_t*, int)) | |
624 | xfs_qm_qoff_logitem_unpin, | |
625 | .iop_unpin_remove = (void(*)(xfs_log_item_t*,xfs_trans_t*)) | |
626 | xfs_qm_qoff_logitem_unpin_remove, | |
627 | .iop_trylock = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_trylock, | |
628 | .iop_unlock = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_unlock, | |
629 | .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t)) | |
630 | xfs_qm_qoff_logitem_committed, | |
631 | .iop_push = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_push, | |
1da177e4 LT |
632 | .iop_pushbuf = NULL, |
633 | .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t)) | |
634 | xfs_qm_qoff_logitem_committing | |
635 | }; | |
636 | ||
637 | /* | |
638 | * Allocate and initialize an quotaoff item of the correct quota type(s). | |
639 | */ | |
640 | xfs_qoff_logitem_t * | |
641 | xfs_qm_qoff_logitem_init( | |
642 | struct xfs_mount *mp, | |
643 | xfs_qoff_logitem_t *start, | |
644 | uint flags) | |
645 | { | |
646 | xfs_qoff_logitem_t *qf; | |
647 | ||
648 | qf = (xfs_qoff_logitem_t*) kmem_zalloc(sizeof(xfs_qoff_logitem_t), KM_SLEEP); | |
649 | ||
650 | qf->qql_item.li_type = XFS_LI_QUOTAOFF; | |
651 | if (start) | |
652 | qf->qql_item.li_ops = &xfs_qm_qoffend_logitem_ops; | |
653 | else | |
654 | qf->qql_item.li_ops = &xfs_qm_qoff_logitem_ops; | |
655 | qf->qql_item.li_mountp = mp; | |
656 | qf->qql_format.qf_type = XFS_LI_QUOTAOFF; | |
657 | qf->qql_format.qf_flags = flags; | |
658 | qf->qql_start_lip = start; | |
659 | return (qf); | |
660 | } |