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