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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 | 76 | qlip->qli_format.qlf_size = 2; |
1da177e4 LT |
77 | |
78 | } | |
79 | ||
80 | /* | |
81 | * Increment the pin count of the given dquot. | |
1da177e4 LT |
82 | */ |
83 | STATIC void | |
84 | xfs_qm_dquot_logitem_pin( | |
7bfa31d8 | 85 | struct xfs_log_item *lip) |
1da177e4 | 86 | { |
7bfa31d8 | 87 | struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; |
1da177e4 | 88 | |
1da177e4 | 89 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
d1de8021 | 90 | atomic_inc(&dqp->q_pincount); |
1da177e4 LT |
91 | } |
92 | ||
93 | /* | |
94 | * Decrement the pin count of the given dquot, and wake up | |
95 | * anyone in xfs_dqwait_unpin() if the count goes to 0. The | |
bc3048e3 PL |
96 | * dquot must have been previously pinned with a call to |
97 | * xfs_qm_dquot_logitem_pin(). | |
1da177e4 | 98 | */ |
1da177e4 LT |
99 | STATIC void |
100 | xfs_qm_dquot_logitem_unpin( | |
7bfa31d8 | 101 | struct xfs_log_item *lip, |
9412e318 | 102 | int remove) |
1da177e4 | 103 | { |
7bfa31d8 | 104 | struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; |
1da177e4 | 105 | |
bc3048e3 PL |
106 | ASSERT(atomic_read(&dqp->q_pincount) > 0); |
107 | if (atomic_dec_and_test(&dqp->q_pincount)) | |
108 | wake_up(&dqp->q_pinwait); | |
1da177e4 LT |
109 | } |
110 | ||
1da177e4 LT |
111 | /* |
112 | * Given the logitem, this writes the corresponding dquot entry to disk | |
113 | * asynchronously. This is called with the dquot entry securely locked; | |
114 | * we simply get xfs_qm_dqflush() to do the work, and unlock the dquot | |
115 | * at the end. | |
116 | */ | |
117 | STATIC void | |
118 | xfs_qm_dquot_logitem_push( | |
7bfa31d8 | 119 | struct xfs_log_item *lip) |
1da177e4 | 120 | { |
7bfa31d8 CH |
121 | struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; |
122 | int error; | |
1da177e4 LT |
123 | |
124 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
e1f49cf2 | 125 | ASSERT(!completion_done(&dqp->q_flush)); |
1da177e4 LT |
126 | |
127 | /* | |
128 | * Since we were able to lock the dquot's flush lock and | |
129 | * we found it on the AIL, the dquot must be dirty. This | |
130 | * is because the dquot is removed from the AIL while still | |
131 | * holding the flush lock in xfs_dqflush_done(). Thus, if | |
132 | * we found it in the AIL and were able to obtain the flush | |
133 | * lock without sleeping, then there must not have been | |
134 | * anyone in the process of flushing the dquot. | |
135 | */ | |
fdedf28b | 136 | error = xfs_qm_dqflush(dqp, SYNC_TRYLOCK); |
3c56836f | 137 | if (error) |
53487786 DC |
138 | xfs_warn(dqp->q_mount, "%s: push error %d on dqp %p", |
139 | __func__, error, dqp); | |
1da177e4 LT |
140 | xfs_dqunlock(dqp); |
141 | } | |
142 | ||
1da177e4 LT |
143 | STATIC xfs_lsn_t |
144 | xfs_qm_dquot_logitem_committed( | |
7bfa31d8 | 145 | struct xfs_log_item *lip, |
1da177e4 LT |
146 | xfs_lsn_t lsn) |
147 | { | |
148 | /* | |
149 | * We always re-log the entire dquot when it becomes dirty, | |
150 | * so, the latest copy _is_ the only one that matters. | |
151 | */ | |
7bfa31d8 | 152 | return lsn; |
1da177e4 LT |
153 | } |
154 | ||
1da177e4 LT |
155 | /* |
156 | * This is called to wait for the given dquot to be unpinned. | |
157 | * Most of these pin/unpin routines are plagiarized from inode code. | |
158 | */ | |
159 | void | |
160 | xfs_qm_dqunpin_wait( | |
7bfa31d8 | 161 | struct xfs_dquot *dqp) |
1da177e4 | 162 | { |
1da177e4 | 163 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
bc3048e3 | 164 | if (atomic_read(&dqp->q_pincount) == 0) |
1da177e4 | 165 | return; |
1da177e4 LT |
166 | |
167 | /* | |
168 | * Give the log a push so we don't wait here too long. | |
169 | */ | |
a14a348b | 170 | xfs_log_force(dqp->q_mount, 0); |
bc3048e3 | 171 | wait_event(dqp->q_pinwait, (atomic_read(&dqp->q_pincount) == 0)); |
1da177e4 LT |
172 | } |
173 | ||
174 | /* | |
175 | * This is called when IOP_TRYLOCK returns XFS_ITEM_PUSHBUF to indicate that | |
176 | * the dquot is locked by us, but the flush lock isn't. So, here we are | |
177 | * going to see if the relevant dquot buffer is incore, waiting on DELWRI. | |
178 | * If so, we want to push it out to help us take this item off the AIL as soon | |
179 | * as possible. | |
180 | * | |
287f3dad DD |
181 | * We must not be holding the AIL lock at this point. Calling incore() to |
182 | * search the buffer cache can be a time consuming thing, and AIL lock is a | |
1da177e4 LT |
183 | * spinlock. |
184 | */ | |
17b38471 | 185 | STATIC bool |
1da177e4 | 186 | xfs_qm_dquot_logitem_pushbuf( |
7bfa31d8 | 187 | struct xfs_log_item *lip) |
1da177e4 | 188 | { |
7bfa31d8 CH |
189 | struct xfs_dq_logitem *qlip = DQUOT_ITEM(lip); |
190 | struct xfs_dquot *dqp = qlip->qli_dquot; | |
191 | struct xfs_buf *bp; | |
17b38471 | 192 | bool ret = true; |
1da177e4 | 193 | |
1da177e4 LT |
194 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
195 | ||
1da177e4 LT |
196 | /* |
197 | * If flushlock isn't locked anymore, chances are that the | |
198 | * inode flush completed and the inode was taken off the AIL. | |
199 | * So, just get out. | |
200 | */ | |
7bfa31d8 CH |
201 | if (completion_done(&dqp->q_flush) || |
202 | !(lip->li_flags & XFS_LI_IN_AIL)) { | |
1da177e4 | 203 | xfs_dqunlock(dqp); |
17b38471 | 204 | return true; |
1da177e4 | 205 | } |
7bfa31d8 CH |
206 | |
207 | bp = xfs_incore(dqp->q_mount->m_ddev_targp, qlip->qli_format.qlf_blkno, | |
208 | dqp->q_mount->m_quotainfo->qi_dqchunklen, XBF_TRYLOCK); | |
d808f617 DC |
209 | xfs_dqunlock(dqp); |
210 | if (!bp) | |
17b38471 | 211 | return true; |
d808f617 DC |
212 | if (XFS_BUF_ISDELAYWRITE(bp)) |
213 | xfs_buf_delwri_promote(bp); | |
17b38471 CH |
214 | if (xfs_buf_ispinned(bp)) |
215 | ret = false; | |
d808f617 | 216 | xfs_buf_relse(bp); |
17b38471 | 217 | return ret; |
1da177e4 LT |
218 | } |
219 | ||
220 | /* | |
221 | * This is called to attempt to lock the dquot associated with this | |
222 | * dquot log item. Don't sleep on the dquot lock or the flush lock. | |
223 | * If the flush lock is already held, indicating that the dquot has | |
224 | * been or is in the process of being flushed, then see if we can | |
225 | * find the dquot's buffer in the buffer cache without sleeping. If | |
226 | * we can and it is marked delayed write, then we want to send it out. | |
227 | * We delay doing so until the push routine, though, to avoid sleeping | |
228 | * in any device strategy routines. | |
229 | */ | |
230 | STATIC uint | |
231 | xfs_qm_dquot_logitem_trylock( | |
7bfa31d8 | 232 | struct xfs_log_item *lip) |
1da177e4 | 233 | { |
7bfa31d8 | 234 | struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; |
1da177e4 | 235 | |
bc3048e3 | 236 | if (atomic_read(&dqp->q_pincount) > 0) |
d808f617 | 237 | return XFS_ITEM_PINNED; |
1da177e4 | 238 | |
7bfa31d8 | 239 | if (!xfs_qm_dqlock_nowait(dqp)) |
d808f617 | 240 | return XFS_ITEM_LOCKED; |
1da177e4 | 241 | |
e1f49cf2 | 242 | if (!xfs_dqflock_nowait(dqp)) { |
1da177e4 | 243 | /* |
d808f617 DC |
244 | * dquot has already been flushed to the backing buffer, |
245 | * leave it locked, pushbuf routine will unlock it. | |
1da177e4 | 246 | */ |
d808f617 | 247 | return XFS_ITEM_PUSHBUF; |
1da177e4 LT |
248 | } |
249 | ||
7bfa31d8 | 250 | ASSERT(lip->li_flags & XFS_LI_IN_AIL); |
d808f617 | 251 | return XFS_ITEM_SUCCESS; |
1da177e4 LT |
252 | } |
253 | ||
1da177e4 LT |
254 | /* |
255 | * Unlock the dquot associated with the log item. | |
256 | * Clear the fields of the dquot and dquot log item that | |
257 | * are specific to the current transaction. If the | |
258 | * hold flags is set, do not unlock the dquot. | |
259 | */ | |
260 | STATIC void | |
261 | xfs_qm_dquot_logitem_unlock( | |
7bfa31d8 | 262 | struct xfs_log_item *lip) |
1da177e4 | 263 | { |
7bfa31d8 | 264 | struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; |
1da177e4 | 265 | |
1da177e4 LT |
266 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
267 | ||
268 | /* | |
269 | * Clear the transaction pointer in the dquot | |
270 | */ | |
271 | dqp->q_transp = NULL; | |
272 | ||
273 | /* | |
274 | * dquots are never 'held' from getting unlocked at the end of | |
275 | * a transaction. Their locking and unlocking is hidden inside the | |
276 | * transaction layer, within trans_commit. Hence, no LI_HOLD flag | |
277 | * for the logitem. | |
278 | */ | |
279 | xfs_dqunlock(dqp); | |
280 | } | |
281 | ||
1da177e4 LT |
282 | /* |
283 | * this needs to stamp an lsn into the dquot, I think. | |
284 | * rpc's that look at user dquot's would then have to | |
285 | * push on the dependency recorded in the dquot | |
286 | */ | |
1da177e4 LT |
287 | STATIC void |
288 | xfs_qm_dquot_logitem_committing( | |
7bfa31d8 | 289 | struct xfs_log_item *lip, |
1da177e4 LT |
290 | xfs_lsn_t lsn) |
291 | { | |
1da177e4 LT |
292 | } |
293 | ||
1da177e4 LT |
294 | /* |
295 | * This is the ops vector for dquots | |
296 | */ | |
272e42b2 | 297 | static const struct xfs_item_ops xfs_dquot_item_ops = { |
7bfa31d8 CH |
298 | .iop_size = xfs_qm_dquot_logitem_size, |
299 | .iop_format = xfs_qm_dquot_logitem_format, | |
300 | .iop_pin = xfs_qm_dquot_logitem_pin, | |
301 | .iop_unpin = xfs_qm_dquot_logitem_unpin, | |
302 | .iop_trylock = xfs_qm_dquot_logitem_trylock, | |
303 | .iop_unlock = xfs_qm_dquot_logitem_unlock, | |
304 | .iop_committed = xfs_qm_dquot_logitem_committed, | |
305 | .iop_push = xfs_qm_dquot_logitem_push, | |
306 | .iop_pushbuf = xfs_qm_dquot_logitem_pushbuf, | |
307 | .iop_committing = xfs_qm_dquot_logitem_committing | |
1da177e4 LT |
308 | }; |
309 | ||
310 | /* | |
311 | * Initialize the dquot log item for a newly allocated dquot. | |
312 | * The dquot isn't locked at this point, but it isn't on any of the lists | |
313 | * either, so we don't care. | |
314 | */ | |
315 | void | |
316 | xfs_qm_dquot_logitem_init( | |
7bfa31d8 | 317 | struct xfs_dquot *dqp) |
1da177e4 | 318 | { |
7bfa31d8 | 319 | struct xfs_dq_logitem *lp = &dqp->q_logitem; |
1da177e4 | 320 | |
43f5efc5 DC |
321 | xfs_log_item_init(dqp->q_mount, &lp->qli_item, XFS_LI_DQUOT, |
322 | &xfs_dquot_item_ops); | |
1da177e4 LT |
323 | lp->qli_dquot = dqp; |
324 | lp->qli_format.qlf_type = XFS_LI_DQUOT; | |
1149d96a | 325 | lp->qli_format.qlf_id = be32_to_cpu(dqp->q_core.d_id); |
1da177e4 LT |
326 | lp->qli_format.qlf_blkno = dqp->q_blkno; |
327 | lp->qli_format.qlf_len = 1; | |
328 | /* | |
329 | * This is just the offset of this dquot within its buffer | |
330 | * (which is currently 1 FSB and probably won't change). | |
331 | * Hence 32 bits for this offset should be just fine. | |
332 | * Alternatively, we can store (bufoffset / sizeof(xfs_dqblk_t)) | |
333 | * here, and recompute it at recovery time. | |
334 | */ | |
335 | lp->qli_format.qlf_boffset = (__uint32_t)dqp->q_bufoffset; | |
336 | } | |
337 | ||
338 | /*------------------ QUOTAOFF LOG ITEMS -------------------*/ | |
339 | ||
7bfa31d8 CH |
340 | static inline struct xfs_qoff_logitem *QOFF_ITEM(struct xfs_log_item *lip) |
341 | { | |
342 | return container_of(lip, struct xfs_qoff_logitem, qql_item); | |
343 | } | |
344 | ||
345 | ||
1da177e4 LT |
346 | /* |
347 | * This returns the number of iovecs needed to log the given quotaoff item. | |
348 | * We only need 1 iovec for an quotaoff item. It just logs the | |
349 | * quotaoff_log_format structure. | |
350 | */ | |
1da177e4 | 351 | STATIC uint |
7bfa31d8 CH |
352 | xfs_qm_qoff_logitem_size( |
353 | struct xfs_log_item *lip) | |
1da177e4 | 354 | { |
7bfa31d8 | 355 | return 1; |
1da177e4 LT |
356 | } |
357 | ||
358 | /* | |
359 | * This is called to fill in the vector of log iovecs for the | |
360 | * given quotaoff log item. We use only 1 iovec, and we point that | |
361 | * at the quotaoff_log_format structure embedded in the quotaoff item. | |
362 | * It is at this point that we assert that all of the extent | |
363 | * slots in the quotaoff item have been filled. | |
364 | */ | |
365 | STATIC void | |
7bfa31d8 CH |
366 | xfs_qm_qoff_logitem_format( |
367 | struct xfs_log_item *lip, | |
368 | struct xfs_log_iovec *log_vector) | |
1da177e4 | 369 | { |
7bfa31d8 | 370 | struct xfs_qoff_logitem *qflip = QOFF_ITEM(lip); |
1da177e4 | 371 | |
7bfa31d8 CH |
372 | ASSERT(qflip->qql_format.qf_type == XFS_LI_QUOTAOFF); |
373 | ||
4e0d5f92 | 374 | log_vector->i_addr = &qflip->qql_format; |
1da177e4 | 375 | log_vector->i_len = sizeof(xfs_qoff_logitem_t); |
4139b3b3 | 376 | log_vector->i_type = XLOG_REG_TYPE_QUOTAOFF; |
7bfa31d8 | 377 | qflip->qql_format.qf_size = 1; |
1da177e4 LT |
378 | } |
379 | ||
1da177e4 LT |
380 | /* |
381 | * Pinning has no meaning for an quotaoff item, so just return. | |
382 | */ | |
1da177e4 | 383 | STATIC void |
7bfa31d8 CH |
384 | xfs_qm_qoff_logitem_pin( |
385 | struct xfs_log_item *lip) | |
1da177e4 | 386 | { |
1da177e4 LT |
387 | } |
388 | ||
1da177e4 LT |
389 | /* |
390 | * Since pinning has no meaning for an quotaoff item, unpinning does | |
391 | * not either. | |
392 | */ | |
1da177e4 | 393 | STATIC void |
7bfa31d8 CH |
394 | xfs_qm_qoff_logitem_unpin( |
395 | struct xfs_log_item *lip, | |
396 | int remove) | |
1da177e4 | 397 | { |
1da177e4 LT |
398 | } |
399 | ||
400 | /* | |
401 | * Quotaoff items have no locking, so just return success. | |
402 | */ | |
1da177e4 | 403 | STATIC uint |
7bfa31d8 CH |
404 | xfs_qm_qoff_logitem_trylock( |
405 | struct xfs_log_item *lip) | |
1da177e4 LT |
406 | { |
407 | return XFS_ITEM_LOCKED; | |
408 | } | |
409 | ||
410 | /* | |
411 | * Quotaoff items have no locking or pushing, so return failure | |
412 | * so that the caller doesn't bother with us. | |
413 | */ | |
1da177e4 | 414 | STATIC void |
7bfa31d8 CH |
415 | xfs_qm_qoff_logitem_unlock( |
416 | struct xfs_log_item *lip) | |
1da177e4 | 417 | { |
1da177e4 LT |
418 | } |
419 | ||
420 | /* | |
421 | * The quotaoff-start-item is logged only once and cannot be moved in the log, | |
422 | * so simply return the lsn at which it's been logged. | |
423 | */ | |
1da177e4 | 424 | STATIC xfs_lsn_t |
7bfa31d8 CH |
425 | xfs_qm_qoff_logitem_committed( |
426 | struct xfs_log_item *lip, | |
427 | xfs_lsn_t lsn) | |
1da177e4 | 428 | { |
7bfa31d8 | 429 | return lsn; |
1da177e4 LT |
430 | } |
431 | ||
1da177e4 LT |
432 | /* |
433 | * There isn't much you can do to push on an quotaoff item. It is simply | |
434 | * stuck waiting for the log to be flushed to disk. | |
435 | */ | |
1da177e4 | 436 | STATIC void |
7bfa31d8 CH |
437 | xfs_qm_qoff_logitem_push( |
438 | struct xfs_log_item *lip) | |
1da177e4 | 439 | { |
1da177e4 LT |
440 | } |
441 | ||
442 | ||
1da177e4 LT |
443 | STATIC xfs_lsn_t |
444 | xfs_qm_qoffend_logitem_committed( | |
7bfa31d8 CH |
445 | struct xfs_log_item *lip, |
446 | xfs_lsn_t lsn) | |
1da177e4 | 447 | { |
7bfa31d8 CH |
448 | struct xfs_qoff_logitem *qfe = QOFF_ITEM(lip); |
449 | struct xfs_qoff_logitem *qfs = qfe->qql_start_lip; | |
450 | struct xfs_ail *ailp = qfs->qql_item.li_ailp; | |
1da177e4 | 451 | |
1da177e4 LT |
452 | /* |
453 | * Delete the qoff-start logitem from the AIL. | |
783a2f65 | 454 | * xfs_trans_ail_delete() drops the AIL lock. |
1da177e4 | 455 | */ |
7bfa31d8 | 456 | spin_lock(&ailp->xa_lock); |
783a2f65 | 457 | xfs_trans_ail_delete(ailp, (xfs_log_item_t *)qfs); |
7bfa31d8 | 458 | |
f0e2d93c DV |
459 | kmem_free(qfs); |
460 | kmem_free(qfe); | |
1da177e4 LT |
461 | return (xfs_lsn_t)-1; |
462 | } | |
463 | ||
464 | /* | |
465 | * XXX rcc - don't know quite what to do with this. I think we can | |
466 | * just ignore it. The only time that isn't the case is if we allow | |
467 | * the client to somehow see that quotas have been turned off in which | |
468 | * we can't allow that to get back until the quotaoff hits the disk. | |
469 | * So how would that happen? Also, do we need different routines for | |
470 | * quotaoff start and quotaoff end? I suspect the answer is yes but | |
471 | * to be sure, I need to look at the recovery code and see how quota off | |
472 | * recovery is handled (do we roll forward or back or do something else). | |
473 | * If we roll forwards or backwards, then we need two separate routines, | |
474 | * one that does nothing and one that stamps in the lsn that matters | |
475 | * (truly makes the quotaoff irrevocable). If we do something else, | |
476 | * then maybe we don't need two. | |
477 | */ | |
1da177e4 | 478 | STATIC void |
7bfa31d8 CH |
479 | xfs_qm_qoff_logitem_committing( |
480 | struct xfs_log_item *lip, | |
481 | xfs_lsn_t commit_lsn) | |
1da177e4 | 482 | { |
1da177e4 LT |
483 | } |
484 | ||
272e42b2 | 485 | static const struct xfs_item_ops xfs_qm_qoffend_logitem_ops = { |
7bfa31d8 CH |
486 | .iop_size = xfs_qm_qoff_logitem_size, |
487 | .iop_format = xfs_qm_qoff_logitem_format, | |
488 | .iop_pin = xfs_qm_qoff_logitem_pin, | |
489 | .iop_unpin = xfs_qm_qoff_logitem_unpin, | |
490 | .iop_trylock = xfs_qm_qoff_logitem_trylock, | |
491 | .iop_unlock = xfs_qm_qoff_logitem_unlock, | |
492 | .iop_committed = xfs_qm_qoffend_logitem_committed, | |
493 | .iop_push = xfs_qm_qoff_logitem_push, | |
494 | .iop_committing = xfs_qm_qoff_logitem_committing | |
1da177e4 LT |
495 | }; |
496 | ||
497 | /* | |
498 | * This is the ops vector shared by all quotaoff-start log items. | |
499 | */ | |
272e42b2 | 500 | static const struct xfs_item_ops xfs_qm_qoff_logitem_ops = { |
7bfa31d8 CH |
501 | .iop_size = xfs_qm_qoff_logitem_size, |
502 | .iop_format = xfs_qm_qoff_logitem_format, | |
503 | .iop_pin = xfs_qm_qoff_logitem_pin, | |
504 | .iop_unpin = xfs_qm_qoff_logitem_unpin, | |
505 | .iop_trylock = xfs_qm_qoff_logitem_trylock, | |
506 | .iop_unlock = xfs_qm_qoff_logitem_unlock, | |
507 | .iop_committed = xfs_qm_qoff_logitem_committed, | |
508 | .iop_push = xfs_qm_qoff_logitem_push, | |
509 | .iop_committing = xfs_qm_qoff_logitem_committing | |
1da177e4 LT |
510 | }; |
511 | ||
512 | /* | |
513 | * Allocate and initialize an quotaoff item of the correct quota type(s). | |
514 | */ | |
7bfa31d8 | 515 | struct xfs_qoff_logitem * |
1da177e4 | 516 | xfs_qm_qoff_logitem_init( |
7bfa31d8 CH |
517 | struct xfs_mount *mp, |
518 | struct xfs_qoff_logitem *start, | |
519 | uint flags) | |
1da177e4 | 520 | { |
7bfa31d8 | 521 | struct xfs_qoff_logitem *qf; |
1da177e4 | 522 | |
7bfa31d8 | 523 | qf = kmem_zalloc(sizeof(struct xfs_qoff_logitem), KM_SLEEP); |
1da177e4 | 524 | |
43f5efc5 DC |
525 | xfs_log_item_init(mp, &qf->qql_item, XFS_LI_QUOTAOFF, start ? |
526 | &xfs_qm_qoffend_logitem_ops : &xfs_qm_qoff_logitem_ops); | |
1da177e4 LT |
527 | qf->qql_item.li_mountp = mp; |
528 | qf->qql_format.qf_type = XFS_LI_QUOTAOFF; | |
529 | qf->qql_format.qf_flags = flags; | |
530 | qf->qql_start_lip = start; | |
7bfa31d8 | 531 | return qf; |
1da177e4 | 532 | } |