Commit | Line | Data |
---|---|---|
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" | |
6ca1c906 | 20 | #include "xfs_format.h" |
239880ef DC |
21 | #include "xfs_log_format.h" |
22 | #include "xfs_trans_resv.h" | |
1da177e4 LT |
23 | #include "xfs_sb.h" |
24 | #include "xfs_ag.h" | |
1da177e4 | 25 | #include "xfs_mount.h" |
1da177e4 | 26 | #include "xfs_inode.h" |
a4fbe6ab | 27 | #include "xfs_quota.h" |
1da177e4 | 28 | #include "xfs_error.h" |
239880ef | 29 | #include "xfs_trans.h" |
1da177e4 LT |
30 | #include "xfs_buf_item.h" |
31 | #include "xfs_trans_priv.h" | |
1da177e4 | 32 | #include "xfs_qm.h" |
239880ef | 33 | #include "xfs_log.h" |
1da177e4 | 34 | |
7bfa31d8 CH |
35 | static inline struct xfs_dq_logitem *DQUOT_ITEM(struct xfs_log_item *lip) |
36 | { | |
37 | return container_of(lip, struct xfs_dq_logitem, qli_item); | |
38 | } | |
39 | ||
1da177e4 LT |
40 | /* |
41 | * returns the number of iovecs needed to log the given dquot item. | |
42 | */ | |
166d1368 | 43 | STATIC void |
1da177e4 | 44 | xfs_qm_dquot_logitem_size( |
166d1368 DC |
45 | struct xfs_log_item *lip, |
46 | int *nvecs, | |
47 | int *nbytes) | |
1da177e4 | 48 | { |
166d1368 DC |
49 | *nvecs += 2; |
50 | *nbytes += sizeof(struct xfs_dq_logformat) + | |
51 | sizeof(struct xfs_disk_dquot); | |
1da177e4 LT |
52 | } |
53 | ||
54 | /* | |
55 | * fills in the vector of log iovecs for the given dquot log item. | |
56 | */ | |
57 | STATIC void | |
58 | xfs_qm_dquot_logitem_format( | |
7bfa31d8 CH |
59 | struct xfs_log_item *lip, |
60 | struct xfs_log_iovec *logvec) | |
1da177e4 | 61 | { |
7bfa31d8 | 62 | struct xfs_dq_logitem *qlip = DQUOT_ITEM(lip); |
1da177e4 | 63 | |
4e0d5f92 | 64 | logvec->i_addr = &qlip->qli_format; |
1da177e4 | 65 | logvec->i_len = sizeof(xfs_dq_logformat_t); |
4139b3b3 | 66 | logvec->i_type = XLOG_REG_TYPE_QFORMAT; |
1da177e4 | 67 | logvec++; |
4e0d5f92 | 68 | logvec->i_addr = &qlip->qli_dquot->q_core; |
1da177e4 | 69 | logvec->i_len = sizeof(xfs_disk_dquot_t); |
4139b3b3 | 70 | logvec->i_type = XLOG_REG_TYPE_DQUOT; |
1da177e4 | 71 | |
7bfa31d8 | 72 | qlip->qli_format.qlf_size = 2; |
1da177e4 LT |
73 | |
74 | } | |
75 | ||
76 | /* | |
77 | * Increment the pin count of the given dquot. | |
1da177e4 LT |
78 | */ |
79 | STATIC void | |
80 | xfs_qm_dquot_logitem_pin( | |
7bfa31d8 | 81 | struct xfs_log_item *lip) |
1da177e4 | 82 | { |
7bfa31d8 | 83 | struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; |
1da177e4 | 84 | |
1da177e4 | 85 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
d1de8021 | 86 | atomic_inc(&dqp->q_pincount); |
1da177e4 LT |
87 | } |
88 | ||
89 | /* | |
90 | * Decrement the pin count of the given dquot, and wake up | |
91 | * anyone in xfs_dqwait_unpin() if the count goes to 0. The | |
bc3048e3 PL |
92 | * dquot must have been previously pinned with a call to |
93 | * xfs_qm_dquot_logitem_pin(). | |
1da177e4 | 94 | */ |
1da177e4 LT |
95 | STATIC void |
96 | xfs_qm_dquot_logitem_unpin( | |
7bfa31d8 | 97 | struct xfs_log_item *lip, |
9412e318 | 98 | int remove) |
1da177e4 | 99 | { |
7bfa31d8 | 100 | struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; |
1da177e4 | 101 | |
bc3048e3 PL |
102 | ASSERT(atomic_read(&dqp->q_pincount) > 0); |
103 | if (atomic_dec_and_test(&dqp->q_pincount)) | |
104 | wake_up(&dqp->q_pinwait); | |
1da177e4 LT |
105 | } |
106 | ||
1da177e4 LT |
107 | STATIC xfs_lsn_t |
108 | xfs_qm_dquot_logitem_committed( | |
7bfa31d8 | 109 | struct xfs_log_item *lip, |
1da177e4 LT |
110 | xfs_lsn_t lsn) |
111 | { | |
112 | /* | |
113 | * We always re-log the entire dquot when it becomes dirty, | |
114 | * so, the latest copy _is_ the only one that matters. | |
115 | */ | |
7bfa31d8 | 116 | return lsn; |
1da177e4 LT |
117 | } |
118 | ||
1da177e4 LT |
119 | /* |
120 | * This is called to wait for the given dquot to be unpinned. | |
121 | * Most of these pin/unpin routines are plagiarized from inode code. | |
122 | */ | |
123 | void | |
124 | xfs_qm_dqunpin_wait( | |
7bfa31d8 | 125 | struct xfs_dquot *dqp) |
1da177e4 | 126 | { |
1da177e4 | 127 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
bc3048e3 | 128 | if (atomic_read(&dqp->q_pincount) == 0) |
1da177e4 | 129 | return; |
1da177e4 LT |
130 | |
131 | /* | |
132 | * Give the log a push so we don't wait here too long. | |
133 | */ | |
a14a348b | 134 | xfs_log_force(dqp->q_mount, 0); |
bc3048e3 | 135 | wait_event(dqp->q_pinwait, (atomic_read(&dqp->q_pincount) == 0)); |
1da177e4 LT |
136 | } |
137 | ||
1da177e4 | 138 | STATIC uint |
43ff2122 CH |
139 | xfs_qm_dquot_logitem_push( |
140 | struct xfs_log_item *lip, | |
a30b0367 DC |
141 | struct list_head *buffer_list) __releases(&lip->li_ailp->xa_lock) |
142 | __acquires(&lip->li_ailp->xa_lock) | |
1da177e4 | 143 | { |
7bfa31d8 | 144 | struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; |
43ff2122 CH |
145 | struct xfs_buf *bp = NULL; |
146 | uint rval = XFS_ITEM_SUCCESS; | |
147 | int error; | |
1da177e4 | 148 | |
bc3048e3 | 149 | if (atomic_read(&dqp->q_pincount) > 0) |
d808f617 | 150 | return XFS_ITEM_PINNED; |
1da177e4 | 151 | |
800b484e | 152 | if (!xfs_dqlock_nowait(dqp)) |
d808f617 | 153 | return XFS_ITEM_LOCKED; |
1da177e4 | 154 | |
fe7257fd CH |
155 | /* |
156 | * Re-check the pincount now that we stabilized the value by | |
157 | * taking the quota lock. | |
158 | */ | |
159 | if (atomic_read(&dqp->q_pincount) > 0) { | |
43ff2122 CH |
160 | rval = XFS_ITEM_PINNED; |
161 | goto out_unlock; | |
fe7257fd CH |
162 | } |
163 | ||
43ff2122 CH |
164 | /* |
165 | * Someone else is already flushing the dquot. Nothing we can do | |
166 | * here but wait for the flush to finish and remove the item from | |
167 | * the AIL. | |
168 | */ | |
e1f49cf2 | 169 | if (!xfs_dqflock_nowait(dqp)) { |
43ff2122 CH |
170 | rval = XFS_ITEM_FLUSHING; |
171 | goto out_unlock; | |
172 | } | |
173 | ||
174 | spin_unlock(&lip->li_ailp->xa_lock); | |
175 | ||
176 | error = xfs_qm_dqflush(dqp, &bp); | |
177 | if (error) { | |
178 | xfs_warn(dqp->q_mount, "%s: push error %d on dqp %p", | |
179 | __func__, error, dqp); | |
180 | } else { | |
181 | if (!xfs_buf_delwri_queue(bp, buffer_list)) | |
182 | rval = XFS_ITEM_FLUSHING; | |
183 | xfs_buf_relse(bp); | |
1da177e4 LT |
184 | } |
185 | ||
43ff2122 CH |
186 | spin_lock(&lip->li_ailp->xa_lock); |
187 | out_unlock: | |
188 | xfs_dqunlock(dqp); | |
189 | return rval; | |
1da177e4 LT |
190 | } |
191 | ||
1da177e4 LT |
192 | /* |
193 | * Unlock the dquot associated with the log item. | |
194 | * Clear the fields of the dquot and dquot log item that | |
195 | * are specific to the current transaction. If the | |
196 | * hold flags is set, do not unlock the dquot. | |
197 | */ | |
198 | STATIC void | |
199 | xfs_qm_dquot_logitem_unlock( | |
7bfa31d8 | 200 | struct xfs_log_item *lip) |
1da177e4 | 201 | { |
7bfa31d8 | 202 | struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; |
1da177e4 | 203 | |
1da177e4 LT |
204 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
205 | ||
206 | /* | |
207 | * Clear the transaction pointer in the dquot | |
208 | */ | |
209 | dqp->q_transp = NULL; | |
210 | ||
211 | /* | |
212 | * dquots are never 'held' from getting unlocked at the end of | |
213 | * a transaction. Their locking and unlocking is hidden inside the | |
214 | * transaction layer, within trans_commit. Hence, no LI_HOLD flag | |
215 | * for the logitem. | |
216 | */ | |
217 | xfs_dqunlock(dqp); | |
218 | } | |
219 | ||
1da177e4 LT |
220 | /* |
221 | * this needs to stamp an lsn into the dquot, I think. | |
222 | * rpc's that look at user dquot's would then have to | |
223 | * push on the dependency recorded in the dquot | |
224 | */ | |
1da177e4 LT |
225 | STATIC void |
226 | xfs_qm_dquot_logitem_committing( | |
7bfa31d8 | 227 | struct xfs_log_item *lip, |
1da177e4 LT |
228 | xfs_lsn_t lsn) |
229 | { | |
1da177e4 LT |
230 | } |
231 | ||
1da177e4 LT |
232 | /* |
233 | * This is the ops vector for dquots | |
234 | */ | |
272e42b2 | 235 | static const struct xfs_item_ops xfs_dquot_item_ops = { |
7bfa31d8 CH |
236 | .iop_size = xfs_qm_dquot_logitem_size, |
237 | .iop_format = xfs_qm_dquot_logitem_format, | |
238 | .iop_pin = xfs_qm_dquot_logitem_pin, | |
239 | .iop_unpin = xfs_qm_dquot_logitem_unpin, | |
7bfa31d8 CH |
240 | .iop_unlock = xfs_qm_dquot_logitem_unlock, |
241 | .iop_committed = xfs_qm_dquot_logitem_committed, | |
242 | .iop_push = xfs_qm_dquot_logitem_push, | |
7bfa31d8 | 243 | .iop_committing = xfs_qm_dquot_logitem_committing |
1da177e4 LT |
244 | }; |
245 | ||
246 | /* | |
247 | * Initialize the dquot log item for a newly allocated dquot. | |
248 | * The dquot isn't locked at this point, but it isn't on any of the lists | |
249 | * either, so we don't care. | |
250 | */ | |
251 | void | |
252 | xfs_qm_dquot_logitem_init( | |
7bfa31d8 | 253 | struct xfs_dquot *dqp) |
1da177e4 | 254 | { |
7bfa31d8 | 255 | struct xfs_dq_logitem *lp = &dqp->q_logitem; |
1da177e4 | 256 | |
43f5efc5 DC |
257 | xfs_log_item_init(dqp->q_mount, &lp->qli_item, XFS_LI_DQUOT, |
258 | &xfs_dquot_item_ops); | |
1da177e4 LT |
259 | lp->qli_dquot = dqp; |
260 | lp->qli_format.qlf_type = XFS_LI_DQUOT; | |
1149d96a | 261 | lp->qli_format.qlf_id = be32_to_cpu(dqp->q_core.d_id); |
1da177e4 LT |
262 | lp->qli_format.qlf_blkno = dqp->q_blkno; |
263 | lp->qli_format.qlf_len = 1; | |
264 | /* | |
265 | * This is just the offset of this dquot within its buffer | |
266 | * (which is currently 1 FSB and probably won't change). | |
267 | * Hence 32 bits for this offset should be just fine. | |
268 | * Alternatively, we can store (bufoffset / sizeof(xfs_dqblk_t)) | |
269 | * here, and recompute it at recovery time. | |
270 | */ | |
271 | lp->qli_format.qlf_boffset = (__uint32_t)dqp->q_bufoffset; | |
272 | } | |
273 | ||
274 | /*------------------ QUOTAOFF LOG ITEMS -------------------*/ | |
275 | ||
7bfa31d8 CH |
276 | static inline struct xfs_qoff_logitem *QOFF_ITEM(struct xfs_log_item *lip) |
277 | { | |
278 | return container_of(lip, struct xfs_qoff_logitem, qql_item); | |
279 | } | |
280 | ||
281 | ||
1da177e4 LT |
282 | /* |
283 | * This returns the number of iovecs needed to log the given quotaoff item. | |
284 | * We only need 1 iovec for an quotaoff item. It just logs the | |
285 | * quotaoff_log_format structure. | |
286 | */ | |
166d1368 | 287 | STATIC void |
7bfa31d8 | 288 | xfs_qm_qoff_logitem_size( |
166d1368 DC |
289 | struct xfs_log_item *lip, |
290 | int *nvecs, | |
291 | int *nbytes) | |
1da177e4 | 292 | { |
166d1368 DC |
293 | *nvecs += 1; |
294 | *nbytes += sizeof(struct xfs_qoff_logitem); | |
1da177e4 LT |
295 | } |
296 | ||
297 | /* | |
298 | * This is called to fill in the vector of log iovecs for the | |
299 | * given quotaoff log item. We use only 1 iovec, and we point that | |
300 | * at the quotaoff_log_format structure embedded in the quotaoff item. | |
301 | * It is at this point that we assert that all of the extent | |
302 | * slots in the quotaoff item have been filled. | |
303 | */ | |
304 | STATIC void | |
7bfa31d8 CH |
305 | xfs_qm_qoff_logitem_format( |
306 | struct xfs_log_item *lip, | |
307 | struct xfs_log_iovec *log_vector) | |
1da177e4 | 308 | { |
7bfa31d8 | 309 | struct xfs_qoff_logitem *qflip = QOFF_ITEM(lip); |
1da177e4 | 310 | |
7bfa31d8 CH |
311 | ASSERT(qflip->qql_format.qf_type == XFS_LI_QUOTAOFF); |
312 | ||
4e0d5f92 | 313 | log_vector->i_addr = &qflip->qql_format; |
1da177e4 | 314 | log_vector->i_len = sizeof(xfs_qoff_logitem_t); |
4139b3b3 | 315 | log_vector->i_type = XLOG_REG_TYPE_QUOTAOFF; |
7bfa31d8 | 316 | qflip->qql_format.qf_size = 1; |
1da177e4 LT |
317 | } |
318 | ||
1da177e4 LT |
319 | /* |
320 | * Pinning has no meaning for an quotaoff item, so just return. | |
321 | */ | |
1da177e4 | 322 | STATIC void |
7bfa31d8 CH |
323 | xfs_qm_qoff_logitem_pin( |
324 | struct xfs_log_item *lip) | |
1da177e4 | 325 | { |
1da177e4 LT |
326 | } |
327 | ||
1da177e4 LT |
328 | /* |
329 | * Since pinning has no meaning for an quotaoff item, unpinning does | |
330 | * not either. | |
331 | */ | |
1da177e4 | 332 | STATIC void |
7bfa31d8 CH |
333 | xfs_qm_qoff_logitem_unpin( |
334 | struct xfs_log_item *lip, | |
335 | int remove) | |
1da177e4 | 336 | { |
1da177e4 LT |
337 | } |
338 | ||
339 | /* | |
43ff2122 CH |
340 | * There isn't much you can do to push a quotaoff item. It is simply |
341 | * stuck waiting for the log to be flushed to disk. | |
1da177e4 | 342 | */ |
1da177e4 | 343 | STATIC uint |
43ff2122 CH |
344 | xfs_qm_qoff_logitem_push( |
345 | struct xfs_log_item *lip, | |
346 | struct list_head *buffer_list) | |
1da177e4 LT |
347 | { |
348 | return XFS_ITEM_LOCKED; | |
349 | } | |
350 | ||
351 | /* | |
352 | * Quotaoff items have no locking or pushing, so return failure | |
353 | * so that the caller doesn't bother with us. | |
354 | */ | |
1da177e4 | 355 | STATIC void |
7bfa31d8 CH |
356 | xfs_qm_qoff_logitem_unlock( |
357 | struct xfs_log_item *lip) | |
1da177e4 | 358 | { |
1da177e4 LT |
359 | } |
360 | ||
361 | /* | |
362 | * The quotaoff-start-item is logged only once and cannot be moved in the log, | |
363 | * so simply return the lsn at which it's been logged. | |
364 | */ | |
1da177e4 | 365 | STATIC xfs_lsn_t |
7bfa31d8 CH |
366 | xfs_qm_qoff_logitem_committed( |
367 | struct xfs_log_item *lip, | |
368 | xfs_lsn_t lsn) | |
1da177e4 | 369 | { |
7bfa31d8 | 370 | return lsn; |
1da177e4 LT |
371 | } |
372 | ||
1da177e4 LT |
373 | STATIC xfs_lsn_t |
374 | xfs_qm_qoffend_logitem_committed( | |
7bfa31d8 CH |
375 | struct xfs_log_item *lip, |
376 | xfs_lsn_t lsn) | |
1da177e4 | 377 | { |
7bfa31d8 CH |
378 | struct xfs_qoff_logitem *qfe = QOFF_ITEM(lip); |
379 | struct xfs_qoff_logitem *qfs = qfe->qql_start_lip; | |
380 | struct xfs_ail *ailp = qfs->qql_item.li_ailp; | |
1da177e4 | 381 | |
1da177e4 LT |
382 | /* |
383 | * Delete the qoff-start logitem from the AIL. | |
783a2f65 | 384 | * xfs_trans_ail_delete() drops the AIL lock. |
1da177e4 | 385 | */ |
7bfa31d8 | 386 | spin_lock(&ailp->xa_lock); |
04913fdd | 387 | xfs_trans_ail_delete(ailp, &qfs->qql_item, SHUTDOWN_LOG_IO_ERROR); |
7bfa31d8 | 388 | |
f0e2d93c DV |
389 | kmem_free(qfs); |
390 | kmem_free(qfe); | |
1da177e4 LT |
391 | return (xfs_lsn_t)-1; |
392 | } | |
393 | ||
394 | /* | |
395 | * XXX rcc - don't know quite what to do with this. I think we can | |
396 | * just ignore it. The only time that isn't the case is if we allow | |
397 | * the client to somehow see that quotas have been turned off in which | |
398 | * we can't allow that to get back until the quotaoff hits the disk. | |
399 | * So how would that happen? Also, do we need different routines for | |
400 | * quotaoff start and quotaoff end? I suspect the answer is yes but | |
401 | * to be sure, I need to look at the recovery code and see how quota off | |
402 | * recovery is handled (do we roll forward or back or do something else). | |
403 | * If we roll forwards or backwards, then we need two separate routines, | |
404 | * one that does nothing and one that stamps in the lsn that matters | |
405 | * (truly makes the quotaoff irrevocable). If we do something else, | |
406 | * then maybe we don't need two. | |
407 | */ | |
1da177e4 | 408 | STATIC void |
7bfa31d8 CH |
409 | xfs_qm_qoff_logitem_committing( |
410 | struct xfs_log_item *lip, | |
411 | xfs_lsn_t commit_lsn) | |
1da177e4 | 412 | { |
1da177e4 LT |
413 | } |
414 | ||
272e42b2 | 415 | static const struct xfs_item_ops xfs_qm_qoffend_logitem_ops = { |
7bfa31d8 CH |
416 | .iop_size = xfs_qm_qoff_logitem_size, |
417 | .iop_format = xfs_qm_qoff_logitem_format, | |
418 | .iop_pin = xfs_qm_qoff_logitem_pin, | |
419 | .iop_unpin = xfs_qm_qoff_logitem_unpin, | |
7bfa31d8 CH |
420 | .iop_unlock = xfs_qm_qoff_logitem_unlock, |
421 | .iop_committed = xfs_qm_qoffend_logitem_committed, | |
422 | .iop_push = xfs_qm_qoff_logitem_push, | |
423 | .iop_committing = xfs_qm_qoff_logitem_committing | |
1da177e4 LT |
424 | }; |
425 | ||
426 | /* | |
427 | * This is the ops vector shared by all quotaoff-start log items. | |
428 | */ | |
272e42b2 | 429 | static const struct xfs_item_ops xfs_qm_qoff_logitem_ops = { |
7bfa31d8 CH |
430 | .iop_size = xfs_qm_qoff_logitem_size, |
431 | .iop_format = xfs_qm_qoff_logitem_format, | |
432 | .iop_pin = xfs_qm_qoff_logitem_pin, | |
433 | .iop_unpin = xfs_qm_qoff_logitem_unpin, | |
7bfa31d8 CH |
434 | .iop_unlock = xfs_qm_qoff_logitem_unlock, |
435 | .iop_committed = xfs_qm_qoff_logitem_committed, | |
436 | .iop_push = xfs_qm_qoff_logitem_push, | |
437 | .iop_committing = xfs_qm_qoff_logitem_committing | |
1da177e4 LT |
438 | }; |
439 | ||
440 | /* | |
441 | * Allocate and initialize an quotaoff item of the correct quota type(s). | |
442 | */ | |
7bfa31d8 | 443 | struct xfs_qoff_logitem * |
1da177e4 | 444 | xfs_qm_qoff_logitem_init( |
7bfa31d8 CH |
445 | struct xfs_mount *mp, |
446 | struct xfs_qoff_logitem *start, | |
447 | uint flags) | |
1da177e4 | 448 | { |
7bfa31d8 | 449 | struct xfs_qoff_logitem *qf; |
1da177e4 | 450 | |
7bfa31d8 | 451 | qf = kmem_zalloc(sizeof(struct xfs_qoff_logitem), KM_SLEEP); |
1da177e4 | 452 | |
43f5efc5 DC |
453 | xfs_log_item_init(mp, &qf->qql_item, XFS_LI_QUOTAOFF, start ? |
454 | &xfs_qm_qoffend_logitem_ops : &xfs_qm_qoff_logitem_ops); | |
1da177e4 LT |
455 | qf->qql_item.li_mountp = mp; |
456 | qf->qql_format.qf_type = XFS_LI_QUOTAOFF; | |
457 | qf->qql_format.qf_flags = flags; | |
458 | qf->qql_start_lip = start; | |
7bfa31d8 | 459 | return qf; |
1da177e4 | 460 | } |