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" | |
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 | 26 | #include "xfs_alloc.h" |
1da177e4 LT |
27 | #include "xfs_quota.h" |
28 | #include "xfs_mount.h" | |
1da177e4 | 29 | #include "xfs_bmap_btree.h" |
1da177e4 LT |
30 | #include "xfs_inode.h" |
31 | #include "xfs_bmap.h" | |
1da177e4 LT |
32 | #include "xfs_rtalloc.h" |
33 | #include "xfs_error.h" | |
34 | #include "xfs_itable.h" | |
1da177e4 LT |
35 | #include "xfs_attr.h" |
36 | #include "xfs_buf_item.h" | |
37 | #include "xfs_trans_priv.h" | |
1da177e4 LT |
38 | #include "xfs_qm.h" |
39 | ||
7bfa31d8 CH |
40 | static inline struct xfs_dq_logitem *DQUOT_ITEM(struct xfs_log_item *lip) |
41 | { | |
42 | return container_of(lip, struct xfs_dq_logitem, qli_item); | |
43 | } | |
44 | ||
1da177e4 LT |
45 | /* |
46 | * returns the number of iovecs needed to log the given dquot item. | |
47 | */ | |
1da177e4 LT |
48 | STATIC uint |
49 | xfs_qm_dquot_logitem_size( | |
7bfa31d8 | 50 | struct xfs_log_item *lip) |
1da177e4 LT |
51 | { |
52 | /* | |
53 | * we need only two iovecs, one for the format, one for the real thing | |
54 | */ | |
7bfa31d8 | 55 | return 2; |
1da177e4 LT |
56 | } |
57 | ||
58 | /* | |
59 | * fills in the vector of log iovecs for the given dquot log item. | |
60 | */ | |
61 | STATIC void | |
62 | xfs_qm_dquot_logitem_format( | |
7bfa31d8 CH |
63 | struct xfs_log_item *lip, |
64 | struct xfs_log_iovec *logvec) | |
1da177e4 | 65 | { |
7bfa31d8 | 66 | struct xfs_dq_logitem *qlip = DQUOT_ITEM(lip); |
1da177e4 | 67 | |
4e0d5f92 | 68 | logvec->i_addr = &qlip->qli_format; |
1da177e4 | 69 | logvec->i_len = sizeof(xfs_dq_logformat_t); |
4139b3b3 | 70 | logvec->i_type = XLOG_REG_TYPE_QFORMAT; |
1da177e4 | 71 | logvec++; |
4e0d5f92 | 72 | logvec->i_addr = &qlip->qli_dquot->q_core; |
1da177e4 | 73 | logvec->i_len = sizeof(xfs_disk_dquot_t); |
4139b3b3 | 74 | logvec->i_type = XLOG_REG_TYPE_DQUOT; |
1da177e4 | 75 | |
7bfa31d8 CH |
76 | ASSERT(2 == lip->li_desc->lid_size); |
77 | qlip->qli_format.qlf_size = 2; | |
1da177e4 LT |
78 | |
79 | } | |
80 | ||
81 | /* | |
82 | * Increment the pin count of the given dquot. | |
1da177e4 LT |
83 | */ |
84 | STATIC void | |
85 | xfs_qm_dquot_logitem_pin( | |
7bfa31d8 | 86 | struct xfs_log_item *lip) |
1da177e4 | 87 | { |
7bfa31d8 | 88 | struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; |
1da177e4 | 89 | |
1da177e4 | 90 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
d1de8021 | 91 | atomic_inc(&dqp->q_pincount); |
1da177e4 LT |
92 | } |
93 | ||
94 | /* | |
95 | * Decrement the pin count of the given dquot, and wake up | |
96 | * anyone in xfs_dqwait_unpin() if the count goes to 0. The | |
bc3048e3 PL |
97 | * dquot must have been previously pinned with a call to |
98 | * xfs_qm_dquot_logitem_pin(). | |
1da177e4 | 99 | */ |
1da177e4 LT |
100 | STATIC void |
101 | xfs_qm_dquot_logitem_unpin( | |
7bfa31d8 | 102 | struct xfs_log_item *lip, |
9412e318 | 103 | int remove) |
1da177e4 | 104 | { |
7bfa31d8 | 105 | struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; |
1da177e4 | 106 | |
bc3048e3 PL |
107 | ASSERT(atomic_read(&dqp->q_pincount) > 0); |
108 | if (atomic_dec_and_test(&dqp->q_pincount)) | |
109 | wake_up(&dqp->q_pinwait); | |
1da177e4 LT |
110 | } |
111 | ||
1da177e4 LT |
112 | /* |
113 | * Given the logitem, this writes the corresponding dquot entry to disk | |
114 | * asynchronously. This is called with the dquot entry securely locked; | |
115 | * we simply get xfs_qm_dqflush() to do the work, and unlock the dquot | |
116 | * at the end. | |
117 | */ | |
118 | STATIC void | |
119 | xfs_qm_dquot_logitem_push( | |
7bfa31d8 | 120 | struct xfs_log_item *lip) |
1da177e4 | 121 | { |
7bfa31d8 CH |
122 | struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; |
123 | int error; | |
1da177e4 LT |
124 | |
125 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
e1f49cf2 | 126 | ASSERT(!completion_done(&dqp->q_flush)); |
1da177e4 LT |
127 | |
128 | /* | |
129 | * Since we were able to lock the dquot's flush lock and | |
130 | * we found it on the AIL, the dquot must be dirty. This | |
131 | * is because the dquot is removed from the AIL while still | |
132 | * holding the flush lock in xfs_dqflush_done(). Thus, if | |
133 | * we found it in the AIL and were able to obtain the flush | |
134 | * lock without sleeping, then there must not have been | |
135 | * anyone in the process of flushing the dquot. | |
136 | */ | |
20026d92 | 137 | error = xfs_qm_dqflush(dqp, 0); |
3c56836f | 138 | if (error) |
53487786 DC |
139 | xfs_warn(dqp->q_mount, "%s: push error %d on dqp %p", |
140 | __func__, error, dqp); | |
1da177e4 LT |
141 | xfs_dqunlock(dqp); |
142 | } | |
143 | ||
1da177e4 LT |
144 | STATIC xfs_lsn_t |
145 | xfs_qm_dquot_logitem_committed( | |
7bfa31d8 | 146 | struct xfs_log_item *lip, |
1da177e4 LT |
147 | xfs_lsn_t lsn) |
148 | { | |
149 | /* | |
150 | * We always re-log the entire dquot when it becomes dirty, | |
151 | * so, the latest copy _is_ the only one that matters. | |
152 | */ | |
7bfa31d8 | 153 | return lsn; |
1da177e4 LT |
154 | } |
155 | ||
1da177e4 LT |
156 | /* |
157 | * This is called to wait for the given dquot to be unpinned. | |
158 | * Most of these pin/unpin routines are plagiarized from inode code. | |
159 | */ | |
160 | void | |
161 | xfs_qm_dqunpin_wait( | |
7bfa31d8 | 162 | struct xfs_dquot *dqp) |
1da177e4 | 163 | { |
1da177e4 | 164 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
bc3048e3 | 165 | if (atomic_read(&dqp->q_pincount) == 0) |
1da177e4 | 166 | return; |
1da177e4 LT |
167 | |
168 | /* | |
169 | * Give the log a push so we don't wait here too long. | |
170 | */ | |
a14a348b | 171 | xfs_log_force(dqp->q_mount, 0); |
bc3048e3 | 172 | wait_event(dqp->q_pinwait, (atomic_read(&dqp->q_pincount) == 0)); |
1da177e4 LT |
173 | } |
174 | ||
175 | /* | |
176 | * This is called when IOP_TRYLOCK returns XFS_ITEM_PUSHBUF to indicate that | |
177 | * the dquot is locked by us, but the flush lock isn't. So, here we are | |
178 | * going to see if the relevant dquot buffer is incore, waiting on DELWRI. | |
179 | * If so, we want to push it out to help us take this item off the AIL as soon | |
180 | * as possible. | |
181 | * | |
287f3dad DD |
182 | * We must not be holding the AIL lock at this point. Calling incore() to |
183 | * search the buffer cache can be a time consuming thing, and AIL lock is a | |
1da177e4 LT |
184 | * spinlock. |
185 | */ | |
17b38471 | 186 | STATIC bool |
1da177e4 | 187 | xfs_qm_dquot_logitem_pushbuf( |
7bfa31d8 | 188 | struct xfs_log_item *lip) |
1da177e4 | 189 | { |
7bfa31d8 CH |
190 | struct xfs_dq_logitem *qlip = DQUOT_ITEM(lip); |
191 | struct xfs_dquot *dqp = qlip->qli_dquot; | |
192 | struct xfs_buf *bp; | |
17b38471 | 193 | bool ret = true; |
1da177e4 | 194 | |
1da177e4 LT |
195 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
196 | ||
1da177e4 LT |
197 | /* |
198 | * If flushlock isn't locked anymore, chances are that the | |
199 | * inode flush completed and the inode was taken off the AIL. | |
200 | * So, just get out. | |
201 | */ | |
7bfa31d8 CH |
202 | if (completion_done(&dqp->q_flush) || |
203 | !(lip->li_flags & XFS_LI_IN_AIL)) { | |
1da177e4 | 204 | xfs_dqunlock(dqp); |
17b38471 | 205 | return true; |
1da177e4 | 206 | } |
7bfa31d8 CH |
207 | |
208 | bp = xfs_incore(dqp->q_mount->m_ddev_targp, qlip->qli_format.qlf_blkno, | |
209 | dqp->q_mount->m_quotainfo->qi_dqchunklen, XBF_TRYLOCK); | |
d808f617 DC |
210 | xfs_dqunlock(dqp); |
211 | if (!bp) | |
17b38471 | 212 | return true; |
d808f617 DC |
213 | if (XFS_BUF_ISDELAYWRITE(bp)) |
214 | xfs_buf_delwri_promote(bp); | |
17b38471 CH |
215 | if (xfs_buf_ispinned(bp)) |
216 | ret = false; | |
d808f617 | 217 | xfs_buf_relse(bp); |
17b38471 | 218 | return ret; |
1da177e4 LT |
219 | } |
220 | ||
221 | /* | |
222 | * This is called to attempt to lock the dquot associated with this | |
223 | * dquot log item. Don't sleep on the dquot lock or the flush lock. | |
224 | * If the flush lock is already held, indicating that the dquot has | |
225 | * been or is in the process of being flushed, then see if we can | |
226 | * find the dquot's buffer in the buffer cache without sleeping. If | |
227 | * we can and it is marked delayed write, then we want to send it out. | |
228 | * We delay doing so until the push routine, though, to avoid sleeping | |
229 | * in any device strategy routines. | |
230 | */ | |
231 | STATIC uint | |
232 | xfs_qm_dquot_logitem_trylock( | |
7bfa31d8 | 233 | struct xfs_log_item *lip) |
1da177e4 | 234 | { |
7bfa31d8 | 235 | struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; |
1da177e4 | 236 | |
bc3048e3 | 237 | if (atomic_read(&dqp->q_pincount) > 0) |
d808f617 | 238 | return XFS_ITEM_PINNED; |
1da177e4 | 239 | |
7bfa31d8 | 240 | if (!xfs_qm_dqlock_nowait(dqp)) |
d808f617 | 241 | return XFS_ITEM_LOCKED; |
1da177e4 | 242 | |
e1f49cf2 | 243 | if (!xfs_dqflock_nowait(dqp)) { |
1da177e4 | 244 | /* |
d808f617 DC |
245 | * dquot has already been flushed to the backing buffer, |
246 | * leave it locked, pushbuf routine will unlock it. | |
1da177e4 | 247 | */ |
d808f617 | 248 | return XFS_ITEM_PUSHBUF; |
1da177e4 LT |
249 | } |
250 | ||
7bfa31d8 | 251 | ASSERT(lip->li_flags & XFS_LI_IN_AIL); |
d808f617 | 252 | return XFS_ITEM_SUCCESS; |
1da177e4 LT |
253 | } |
254 | ||
1da177e4 LT |
255 | /* |
256 | * Unlock the dquot associated with the log item. | |
257 | * Clear the fields of the dquot and dquot log item that | |
258 | * are specific to the current transaction. If the | |
259 | * hold flags is set, do not unlock the dquot. | |
260 | */ | |
261 | STATIC void | |
262 | xfs_qm_dquot_logitem_unlock( | |
7bfa31d8 | 263 | struct xfs_log_item *lip) |
1da177e4 | 264 | { |
7bfa31d8 | 265 | struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; |
1da177e4 | 266 | |
1da177e4 LT |
267 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
268 | ||
269 | /* | |
270 | * Clear the transaction pointer in the dquot | |
271 | */ | |
272 | dqp->q_transp = NULL; | |
273 | ||
274 | /* | |
275 | * dquots are never 'held' from getting unlocked at the end of | |
276 | * a transaction. Their locking and unlocking is hidden inside the | |
277 | * transaction layer, within trans_commit. Hence, no LI_HOLD flag | |
278 | * for the logitem. | |
279 | */ | |
280 | xfs_dqunlock(dqp); | |
281 | } | |
282 | ||
1da177e4 LT |
283 | /* |
284 | * this needs to stamp an lsn into the dquot, I think. | |
285 | * rpc's that look at user dquot's would then have to | |
286 | * push on the dependency recorded in the dquot | |
287 | */ | |
1da177e4 LT |
288 | STATIC void |
289 | xfs_qm_dquot_logitem_committing( | |
7bfa31d8 | 290 | struct xfs_log_item *lip, |
1da177e4 LT |
291 | xfs_lsn_t lsn) |
292 | { | |
1da177e4 LT |
293 | } |
294 | ||
1da177e4 LT |
295 | /* |
296 | * This is the ops vector for dquots | |
297 | */ | |
272e42b2 | 298 | static const struct xfs_item_ops xfs_dquot_item_ops = { |
7bfa31d8 CH |
299 | .iop_size = xfs_qm_dquot_logitem_size, |
300 | .iop_format = xfs_qm_dquot_logitem_format, | |
301 | .iop_pin = xfs_qm_dquot_logitem_pin, | |
302 | .iop_unpin = xfs_qm_dquot_logitem_unpin, | |
303 | .iop_trylock = xfs_qm_dquot_logitem_trylock, | |
304 | .iop_unlock = xfs_qm_dquot_logitem_unlock, | |
305 | .iop_committed = xfs_qm_dquot_logitem_committed, | |
306 | .iop_push = xfs_qm_dquot_logitem_push, | |
307 | .iop_pushbuf = xfs_qm_dquot_logitem_pushbuf, | |
308 | .iop_committing = xfs_qm_dquot_logitem_committing | |
1da177e4 LT |
309 | }; |
310 | ||
311 | /* | |
312 | * Initialize the dquot log item for a newly allocated dquot. | |
313 | * The dquot isn't locked at this point, but it isn't on any of the lists | |
314 | * either, so we don't care. | |
315 | */ | |
316 | void | |
317 | xfs_qm_dquot_logitem_init( | |
7bfa31d8 | 318 | struct xfs_dquot *dqp) |
1da177e4 | 319 | { |
7bfa31d8 | 320 | struct xfs_dq_logitem *lp = &dqp->q_logitem; |
1da177e4 | 321 | |
43f5efc5 DC |
322 | xfs_log_item_init(dqp->q_mount, &lp->qli_item, XFS_LI_DQUOT, |
323 | &xfs_dquot_item_ops); | |
1da177e4 LT |
324 | lp->qli_dquot = dqp; |
325 | lp->qli_format.qlf_type = XFS_LI_DQUOT; | |
1149d96a | 326 | lp->qli_format.qlf_id = be32_to_cpu(dqp->q_core.d_id); |
1da177e4 LT |
327 | lp->qli_format.qlf_blkno = dqp->q_blkno; |
328 | lp->qli_format.qlf_len = 1; | |
329 | /* | |
330 | * This is just the offset of this dquot within its buffer | |
331 | * (which is currently 1 FSB and probably won't change). | |
332 | * Hence 32 bits for this offset should be just fine. | |
333 | * Alternatively, we can store (bufoffset / sizeof(xfs_dqblk_t)) | |
334 | * here, and recompute it at recovery time. | |
335 | */ | |
336 | lp->qli_format.qlf_boffset = (__uint32_t)dqp->q_bufoffset; | |
337 | } | |
338 | ||
339 | /*------------------ QUOTAOFF LOG ITEMS -------------------*/ | |
340 | ||
7bfa31d8 CH |
341 | static inline struct xfs_qoff_logitem *QOFF_ITEM(struct xfs_log_item *lip) |
342 | { | |
343 | return container_of(lip, struct xfs_qoff_logitem, qql_item); | |
344 | } | |
345 | ||
346 | ||
1da177e4 LT |
347 | /* |
348 | * This returns the number of iovecs needed to log the given quotaoff item. | |
349 | * We only need 1 iovec for an quotaoff item. It just logs the | |
350 | * quotaoff_log_format structure. | |
351 | */ | |
1da177e4 | 352 | STATIC uint |
7bfa31d8 CH |
353 | xfs_qm_qoff_logitem_size( |
354 | struct xfs_log_item *lip) | |
1da177e4 | 355 | { |
7bfa31d8 | 356 | return 1; |
1da177e4 LT |
357 | } |
358 | ||
359 | /* | |
360 | * This is called to fill in the vector of log iovecs for the | |
361 | * given quotaoff log item. We use only 1 iovec, and we point that | |
362 | * at the quotaoff_log_format structure embedded in the quotaoff item. | |
363 | * It is at this point that we assert that all of the extent | |
364 | * slots in the quotaoff item have been filled. | |
365 | */ | |
366 | STATIC void | |
7bfa31d8 CH |
367 | xfs_qm_qoff_logitem_format( |
368 | struct xfs_log_item *lip, | |
369 | struct xfs_log_iovec *log_vector) | |
1da177e4 | 370 | { |
7bfa31d8 | 371 | struct xfs_qoff_logitem *qflip = QOFF_ITEM(lip); |
1da177e4 | 372 | |
7bfa31d8 CH |
373 | ASSERT(qflip->qql_format.qf_type == XFS_LI_QUOTAOFF); |
374 | ||
4e0d5f92 | 375 | log_vector->i_addr = &qflip->qql_format; |
1da177e4 | 376 | log_vector->i_len = sizeof(xfs_qoff_logitem_t); |
4139b3b3 | 377 | log_vector->i_type = XLOG_REG_TYPE_QUOTAOFF; |
7bfa31d8 | 378 | qflip->qql_format.qf_size = 1; |
1da177e4 LT |
379 | } |
380 | ||
1da177e4 LT |
381 | /* |
382 | * Pinning has no meaning for an quotaoff item, so just return. | |
383 | */ | |
1da177e4 | 384 | STATIC void |
7bfa31d8 CH |
385 | xfs_qm_qoff_logitem_pin( |
386 | struct xfs_log_item *lip) | |
1da177e4 | 387 | { |
1da177e4 LT |
388 | } |
389 | ||
1da177e4 LT |
390 | /* |
391 | * Since pinning has no meaning for an quotaoff item, unpinning does | |
392 | * not either. | |
393 | */ | |
1da177e4 | 394 | STATIC void |
7bfa31d8 CH |
395 | xfs_qm_qoff_logitem_unpin( |
396 | struct xfs_log_item *lip, | |
397 | int remove) | |
1da177e4 | 398 | { |
1da177e4 LT |
399 | } |
400 | ||
401 | /* | |
402 | * Quotaoff items have no locking, so just return success. | |
403 | */ | |
1da177e4 | 404 | STATIC uint |
7bfa31d8 CH |
405 | xfs_qm_qoff_logitem_trylock( |
406 | struct xfs_log_item *lip) | |
1da177e4 LT |
407 | { |
408 | return XFS_ITEM_LOCKED; | |
409 | } | |
410 | ||
411 | /* | |
412 | * Quotaoff items have no locking or pushing, so return failure | |
413 | * so that the caller doesn't bother with us. | |
414 | */ | |
1da177e4 | 415 | STATIC void |
7bfa31d8 CH |
416 | xfs_qm_qoff_logitem_unlock( |
417 | struct xfs_log_item *lip) | |
1da177e4 | 418 | { |
1da177e4 LT |
419 | } |
420 | ||
421 | /* | |
422 | * The quotaoff-start-item is logged only once and cannot be moved in the log, | |
423 | * so simply return the lsn at which it's been logged. | |
424 | */ | |
1da177e4 | 425 | STATIC xfs_lsn_t |
7bfa31d8 CH |
426 | xfs_qm_qoff_logitem_committed( |
427 | struct xfs_log_item *lip, | |
428 | xfs_lsn_t lsn) | |
1da177e4 | 429 | { |
7bfa31d8 | 430 | return lsn; |
1da177e4 LT |
431 | } |
432 | ||
1da177e4 LT |
433 | /* |
434 | * There isn't much you can do to push on an quotaoff item. It is simply | |
435 | * stuck waiting for the log to be flushed to disk. | |
436 | */ | |
1da177e4 | 437 | STATIC void |
7bfa31d8 CH |
438 | xfs_qm_qoff_logitem_push( |
439 | struct xfs_log_item *lip) | |
1da177e4 | 440 | { |
1da177e4 LT |
441 | } |
442 | ||
443 | ||
1da177e4 LT |
444 | STATIC xfs_lsn_t |
445 | xfs_qm_qoffend_logitem_committed( | |
7bfa31d8 CH |
446 | struct xfs_log_item *lip, |
447 | xfs_lsn_t lsn) | |
1da177e4 | 448 | { |
7bfa31d8 CH |
449 | struct xfs_qoff_logitem *qfe = QOFF_ITEM(lip); |
450 | struct xfs_qoff_logitem *qfs = qfe->qql_start_lip; | |
451 | struct xfs_ail *ailp = qfs->qql_item.li_ailp; | |
1da177e4 | 452 | |
1da177e4 LT |
453 | /* |
454 | * Delete the qoff-start logitem from the AIL. | |
783a2f65 | 455 | * xfs_trans_ail_delete() drops the AIL lock. |
1da177e4 | 456 | */ |
7bfa31d8 | 457 | spin_lock(&ailp->xa_lock); |
783a2f65 | 458 | xfs_trans_ail_delete(ailp, (xfs_log_item_t *)qfs); |
7bfa31d8 | 459 | |
f0e2d93c DV |
460 | kmem_free(qfs); |
461 | kmem_free(qfe); | |
1da177e4 LT |
462 | return (xfs_lsn_t)-1; |
463 | } | |
464 | ||
465 | /* | |
466 | * XXX rcc - don't know quite what to do with this. I think we can | |
467 | * just ignore it. The only time that isn't the case is if we allow | |
468 | * the client to somehow see that quotas have been turned off in which | |
469 | * we can't allow that to get back until the quotaoff hits the disk. | |
470 | * So how would that happen? Also, do we need different routines for | |
471 | * quotaoff start and quotaoff end? I suspect the answer is yes but | |
472 | * to be sure, I need to look at the recovery code and see how quota off | |
473 | * recovery is handled (do we roll forward or back or do something else). | |
474 | * If we roll forwards or backwards, then we need two separate routines, | |
475 | * one that does nothing and one that stamps in the lsn that matters | |
476 | * (truly makes the quotaoff irrevocable). If we do something else, | |
477 | * then maybe we don't need two. | |
478 | */ | |
1da177e4 | 479 | STATIC void |
7bfa31d8 CH |
480 | xfs_qm_qoff_logitem_committing( |
481 | struct xfs_log_item *lip, | |
482 | xfs_lsn_t commit_lsn) | |
1da177e4 | 483 | { |
1da177e4 LT |
484 | } |
485 | ||
272e42b2 | 486 | static const struct xfs_item_ops xfs_qm_qoffend_logitem_ops = { |
7bfa31d8 CH |
487 | .iop_size = xfs_qm_qoff_logitem_size, |
488 | .iop_format = xfs_qm_qoff_logitem_format, | |
489 | .iop_pin = xfs_qm_qoff_logitem_pin, | |
490 | .iop_unpin = xfs_qm_qoff_logitem_unpin, | |
491 | .iop_trylock = xfs_qm_qoff_logitem_trylock, | |
492 | .iop_unlock = xfs_qm_qoff_logitem_unlock, | |
493 | .iop_committed = xfs_qm_qoffend_logitem_committed, | |
494 | .iop_push = xfs_qm_qoff_logitem_push, | |
495 | .iop_committing = xfs_qm_qoff_logitem_committing | |
1da177e4 LT |
496 | }; |
497 | ||
498 | /* | |
499 | * This is the ops vector shared by all quotaoff-start log items. | |
500 | */ | |
272e42b2 | 501 | static const struct xfs_item_ops xfs_qm_qoff_logitem_ops = { |
7bfa31d8 CH |
502 | .iop_size = xfs_qm_qoff_logitem_size, |
503 | .iop_format = xfs_qm_qoff_logitem_format, | |
504 | .iop_pin = xfs_qm_qoff_logitem_pin, | |
505 | .iop_unpin = xfs_qm_qoff_logitem_unpin, | |
506 | .iop_trylock = xfs_qm_qoff_logitem_trylock, | |
507 | .iop_unlock = xfs_qm_qoff_logitem_unlock, | |
508 | .iop_committed = xfs_qm_qoff_logitem_committed, | |
509 | .iop_push = xfs_qm_qoff_logitem_push, | |
510 | .iop_committing = xfs_qm_qoff_logitem_committing | |
1da177e4 LT |
511 | }; |
512 | ||
513 | /* | |
514 | * Allocate and initialize an quotaoff item of the correct quota type(s). | |
515 | */ | |
7bfa31d8 | 516 | struct xfs_qoff_logitem * |
1da177e4 | 517 | xfs_qm_qoff_logitem_init( |
7bfa31d8 CH |
518 | struct xfs_mount *mp, |
519 | struct xfs_qoff_logitem *start, | |
520 | uint flags) | |
1da177e4 | 521 | { |
7bfa31d8 | 522 | struct xfs_qoff_logitem *qf; |
1da177e4 | 523 | |
7bfa31d8 | 524 | qf = kmem_zalloc(sizeof(struct xfs_qoff_logitem), KM_SLEEP); |
1da177e4 | 525 | |
43f5efc5 DC |
526 | xfs_log_item_init(mp, &qf->qql_item, XFS_LI_QUOTAOFF, start ? |
527 | &xfs_qm_qoffend_logitem_ops : &xfs_qm_qoff_logitem_ops); | |
1da177e4 LT |
528 | qf->qql_item.li_mountp = mp; |
529 | qf->qql_format.qf_type = XFS_LI_QUOTAOFF; | |
530 | qf->qql_format.qf_flags = flags; | |
531 | qf->qql_start_lip = start; | |
7bfa31d8 | 532 | return qf; |
1da177e4 | 533 | } |