Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
4ce3121f NS |
2 | * Copyright (c) 2000-2005 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" |
1da177e4 LT |
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 LT |
28 | #include "xfs_bmap_btree.h" |
29 | #include "xfs_ialloc_btree.h" | |
1da177e4 LT |
30 | #include "xfs_dinode.h" |
31 | #include "xfs_inode.h" | |
a844f451 NS |
32 | #include "xfs_ialloc.h" |
33 | #include "xfs_itable.h" | |
1da177e4 LT |
34 | #include "xfs_rtalloc.h" |
35 | #include "xfs_error.h" | |
a844f451 | 36 | #include "xfs_bmap.h" |
1da177e4 LT |
37 | #include "xfs_attr.h" |
38 | #include "xfs_buf_item.h" | |
39 | #include "xfs_trans_space.h" | |
40 | #include "xfs_utils.h" | |
1da177e4 | 41 | #include "xfs_qm.h" |
0b1b213f | 42 | #include "xfs_trace.h" |
33479e05 | 43 | #include "xfs_icache.h" |
6fcdc59d | 44 | #include "xfs_cksum.h" |
1da177e4 LT |
45 | |
46 | /* | |
47 | * The global quota manager. There is only one of these for the entire | |
48 | * system, _not_ one per file system. XQM keeps track of the overall | |
49 | * quota functionality, including maintaining the freelist and hash | |
50 | * tables of dquots. | |
51 | */ | |
1da177e4 | 52 | STATIC int xfs_qm_init_quotainos(xfs_mount_t *); |
ba0f32d4 | 53 | STATIC int xfs_qm_init_quotainfo(xfs_mount_t *); |
1495f230 | 54 | STATIC int xfs_qm_shake(struct shrinker *, struct shrink_control *); |
1da177e4 | 55 | |
b84a3a96 CH |
56 | /* |
57 | * We use the batch lookup interface to iterate over the dquots as it | |
58 | * currently is the only interface into the radix tree code that allows | |
59 | * fuzzy lookups instead of exact matches. Holding the lock over multiple | |
60 | * operations is fine as all callers are used either during mount/umount | |
61 | * or quotaoff. | |
62 | */ | |
63 | #define XFS_DQ_LOOKUP_BATCH 32 | |
64 | ||
65 | STATIC int | |
66 | xfs_qm_dquot_walk( | |
67 | struct xfs_mount *mp, | |
68 | int type, | |
43ff2122 CH |
69 | int (*execute)(struct xfs_dquot *dqp, void *data), |
70 | void *data) | |
b84a3a96 CH |
71 | { |
72 | struct xfs_quotainfo *qi = mp->m_quotainfo; | |
329e0875 | 73 | struct radix_tree_root *tree = xfs_dquot_tree(qi, type); |
b84a3a96 CH |
74 | uint32_t next_index; |
75 | int last_error = 0; | |
76 | int skipped; | |
77 | int nr_found; | |
78 | ||
79 | restart: | |
80 | skipped = 0; | |
81 | next_index = 0; | |
82 | nr_found = 0; | |
83 | ||
84 | while (1) { | |
85 | struct xfs_dquot *batch[XFS_DQ_LOOKUP_BATCH]; | |
86 | int error = 0; | |
87 | int i; | |
88 | ||
89 | mutex_lock(&qi->qi_tree_lock); | |
90 | nr_found = radix_tree_gang_lookup(tree, (void **)batch, | |
91 | next_index, XFS_DQ_LOOKUP_BATCH); | |
92 | if (!nr_found) { | |
93 | mutex_unlock(&qi->qi_tree_lock); | |
94 | break; | |
95 | } | |
96 | ||
97 | for (i = 0; i < nr_found; i++) { | |
98 | struct xfs_dquot *dqp = batch[i]; | |
99 | ||
100 | next_index = be32_to_cpu(dqp->q_core.d_id) + 1; | |
101 | ||
43ff2122 | 102 | error = execute(batch[i], data); |
b84a3a96 CH |
103 | if (error == EAGAIN) { |
104 | skipped++; | |
105 | continue; | |
106 | } | |
107 | if (error && last_error != EFSCORRUPTED) | |
108 | last_error = error; | |
109 | } | |
110 | ||
111 | mutex_unlock(&qi->qi_tree_lock); | |
112 | ||
113 | /* bail out if the filesystem is corrupted. */ | |
114 | if (last_error == EFSCORRUPTED) { | |
115 | skipped = 0; | |
116 | break; | |
117 | } | |
118 | } | |
119 | ||
120 | if (skipped) { | |
121 | delay(1); | |
122 | goto restart; | |
123 | } | |
124 | ||
125 | return last_error; | |
126 | } | |
127 | ||
128 | ||
129 | /* | |
130 | * Purge a dquot from all tracking data structures and free it. | |
131 | */ | |
132 | STATIC int | |
133 | xfs_qm_dqpurge( | |
43ff2122 CH |
134 | struct xfs_dquot *dqp, |
135 | void *data) | |
b84a3a96 CH |
136 | { |
137 | struct xfs_mount *mp = dqp->q_mount; | |
138 | struct xfs_quotainfo *qi = mp->m_quotainfo; | |
139 | struct xfs_dquot *gdqp = NULL; | |
140 | ||
141 | xfs_dqlock(dqp); | |
142 | if ((dqp->dq_flags & XFS_DQ_FREEING) || dqp->q_nrefs != 0) { | |
143 | xfs_dqunlock(dqp); | |
144 | return EAGAIN; | |
145 | } | |
146 | ||
147 | /* | |
148 | * If this quota has a group hint attached, prepare for releasing it | |
149 | * now. | |
150 | */ | |
151 | gdqp = dqp->q_gdquot; | |
152 | if (gdqp) { | |
153 | xfs_dqlock(gdqp); | |
154 | dqp->q_gdquot = NULL; | |
155 | } | |
156 | ||
157 | dqp->dq_flags |= XFS_DQ_FREEING; | |
158 | ||
43ff2122 | 159 | xfs_dqflock(dqp); |
b84a3a96 CH |
160 | |
161 | /* | |
162 | * If we are turning this type of quotas off, we don't care | |
163 | * about the dirty metadata sitting in this dquot. OTOH, if | |
164 | * we're unmounting, we do care, so we flush it and wait. | |
165 | */ | |
166 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
fe7257fd CH |
167 | struct xfs_buf *bp = NULL; |
168 | int error; | |
b84a3a96 CH |
169 | |
170 | /* | |
171 | * We don't care about getting disk errors here. We need | |
172 | * to purge this dquot anyway, so we go ahead regardless. | |
173 | */ | |
fe7257fd CH |
174 | error = xfs_qm_dqflush(dqp, &bp); |
175 | if (error) { | |
b84a3a96 CH |
176 | xfs_warn(mp, "%s: dquot %p flush failed", |
177 | __func__, dqp); | |
fe7257fd CH |
178 | } else { |
179 | error = xfs_bwrite(bp); | |
180 | xfs_buf_relse(bp); | |
181 | } | |
b84a3a96 CH |
182 | xfs_dqflock(dqp); |
183 | } | |
184 | ||
185 | ASSERT(atomic_read(&dqp->q_pincount) == 0); | |
186 | ASSERT(XFS_FORCED_SHUTDOWN(mp) || | |
187 | !(dqp->q_logitem.qli_item.li_flags & XFS_LI_IN_AIL)); | |
188 | ||
189 | xfs_dqfunlock(dqp); | |
190 | xfs_dqunlock(dqp); | |
191 | ||
329e0875 | 192 | radix_tree_delete(xfs_dquot_tree(qi, dqp->q_core.d_flags), |
b84a3a96 CH |
193 | be32_to_cpu(dqp->q_core.d_id)); |
194 | qi->qi_dquots--; | |
195 | ||
196 | /* | |
197 | * We move dquots to the freelist as soon as their reference count | |
198 | * hits zero, so it really should be on the freelist here. | |
199 | */ | |
200 | mutex_lock(&qi->qi_lru_lock); | |
201 | ASSERT(!list_empty(&dqp->q_lru)); | |
202 | list_del_init(&dqp->q_lru); | |
203 | qi->qi_lru_count--; | |
204 | XFS_STATS_DEC(xs_qm_dquot_unused); | |
205 | mutex_unlock(&qi->qi_lru_lock); | |
206 | ||
207 | xfs_qm_dqdestroy(dqp); | |
208 | ||
209 | if (gdqp) | |
210 | xfs_qm_dqput(gdqp); | |
211 | return 0; | |
212 | } | |
213 | ||
214 | /* | |
215 | * Purge the dquot cache. | |
216 | */ | |
217 | void | |
218 | xfs_qm_dqpurge_all( | |
219 | struct xfs_mount *mp, | |
220 | uint flags) | |
221 | { | |
222 | if (flags & XFS_QMOPT_UQUOTA) | |
43ff2122 | 223 | xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_dqpurge, NULL); |
b84a3a96 | 224 | if (flags & XFS_QMOPT_GQUOTA) |
43ff2122 | 225 | xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_dqpurge, NULL); |
b84a3a96 | 226 | if (flags & XFS_QMOPT_PQUOTA) |
43ff2122 | 227 | xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_dqpurge, NULL); |
b84a3a96 CH |
228 | } |
229 | ||
1da177e4 LT |
230 | /* |
231 | * Just destroy the quotainfo structure. | |
232 | */ | |
233 | void | |
7d095257 CH |
234 | xfs_qm_unmount( |
235 | struct xfs_mount *mp) | |
1da177e4 | 236 | { |
7d095257 | 237 | if (mp->m_quotainfo) { |
8112e9dc | 238 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 | 239 | xfs_qm_destroy_quotainfo(mp); |
7d095257 | 240 | } |
1da177e4 LT |
241 | } |
242 | ||
243 | ||
244 | /* | |
245 | * This is called from xfs_mountfs to start quotas and initialize all | |
246 | * necessary data structures like quotainfo. This is also responsible for | |
247 | * running a quotacheck as necessary. We are guaranteed that the superblock | |
248 | * is consistently read in at this point. | |
53aa7915 DC |
249 | * |
250 | * If we fail here, the mount will continue with quota turned off. We don't | |
251 | * need to inidicate success or failure at all. | |
1da177e4 | 252 | */ |
53aa7915 | 253 | void |
1da177e4 | 254 | xfs_qm_mount_quotas( |
4249023a | 255 | xfs_mount_t *mp) |
1da177e4 | 256 | { |
1da177e4 LT |
257 | int error = 0; |
258 | uint sbf; | |
259 | ||
1da177e4 LT |
260 | /* |
261 | * If quotas on realtime volumes is not supported, we disable | |
262 | * quotas immediately. | |
263 | */ | |
264 | if (mp->m_sb.sb_rextents) { | |
0b932ccc | 265 | xfs_notice(mp, "Cannot turn on quotas for realtime filesystem"); |
1da177e4 LT |
266 | mp->m_qflags = 0; |
267 | goto write_changes; | |
268 | } | |
269 | ||
1da177e4 | 270 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
155ffd07 | 271 | |
1da177e4 LT |
272 | /* |
273 | * Allocate the quotainfo structure inside the mount struct, and | |
274 | * create quotainode(s), and change/rev superblock if necessary. | |
275 | */ | |
53aa7915 DC |
276 | error = xfs_qm_init_quotainfo(mp); |
277 | if (error) { | |
1da177e4 LT |
278 | /* |
279 | * We must turn off quotas. | |
280 | */ | |
281 | ASSERT(mp->m_quotainfo == NULL); | |
282 | mp->m_qflags = 0; | |
283 | goto write_changes; | |
284 | } | |
285 | /* | |
286 | * If any of the quotas are not consistent, do a quotacheck. | |
287 | */ | |
4249023a | 288 | if (XFS_QM_NEED_QUOTACHECK(mp)) { |
53aa7915 DC |
289 | error = xfs_qm_quotacheck(mp); |
290 | if (error) { | |
291 | /* Quotacheck failed and disabled quotas. */ | |
292 | return; | |
1da177e4 | 293 | } |
1da177e4 | 294 | } |
646d5bda DD |
295 | /* |
296 | * If one type of quotas is off, then it will lose its | |
297 | * quotachecked status, since we won't be doing accounting for | |
298 | * that type anymore. | |
299 | */ | |
53aa7915 | 300 | if (!XFS_IS_UQUOTA_ON(mp)) |
646d5bda | 301 | mp->m_qflags &= ~XFS_UQUOTA_CHKD; |
83e782e1 CS |
302 | if (!XFS_IS_GQUOTA_ON(mp)) |
303 | mp->m_qflags &= ~XFS_GQUOTA_CHKD; | |
304 | if (!XFS_IS_PQUOTA_ON(mp)) | |
305 | mp->m_qflags &= ~XFS_PQUOTA_CHKD; | |
155ffd07 | 306 | |
1da177e4 LT |
307 | write_changes: |
308 | /* | |
3685c2a1 | 309 | * We actually don't have to acquire the m_sb_lock at all. |
1da177e4 LT |
310 | * This can only be called from mount, and that's single threaded. XXX |
311 | */ | |
3685c2a1 | 312 | spin_lock(&mp->m_sb_lock); |
1da177e4 LT |
313 | sbf = mp->m_sb.sb_qflags; |
314 | mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL; | |
3685c2a1 | 315 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
316 | |
317 | if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { | |
318 | if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) { | |
319 | /* | |
320 | * We could only have been turning quotas off. | |
321 | * We aren't in very good shape actually because | |
322 | * the incore structures are convinced that quotas are | |
323 | * off, but the on disk superblock doesn't know that ! | |
324 | */ | |
325 | ASSERT(!(XFS_IS_QUOTA_RUNNING(mp))); | |
53487786 DC |
326 | xfs_alert(mp, "%s: Superblock update failed!", |
327 | __func__); | |
1da177e4 LT |
328 | } |
329 | } | |
330 | ||
331 | if (error) { | |
53487786 | 332 | xfs_warn(mp, "Failed to initialize disk quotas."); |
7d095257 | 333 | return; |
1da177e4 | 334 | } |
1da177e4 LT |
335 | } |
336 | ||
337 | /* | |
338 | * Called from the vfsops layer. | |
339 | */ | |
e57481dc | 340 | void |
1da177e4 LT |
341 | xfs_qm_unmount_quotas( |
342 | xfs_mount_t *mp) | |
343 | { | |
1da177e4 LT |
344 | /* |
345 | * Release the dquots that root inode, et al might be holding, | |
346 | * before we flush quotas and blow away the quotainfo structure. | |
347 | */ | |
348 | ASSERT(mp->m_rootip); | |
349 | xfs_qm_dqdetach(mp->m_rootip); | |
350 | if (mp->m_rbmip) | |
351 | xfs_qm_dqdetach(mp->m_rbmip); | |
352 | if (mp->m_rsumip) | |
353 | xfs_qm_dqdetach(mp->m_rsumip); | |
354 | ||
355 | /* | |
e57481dc | 356 | * Release the quota inodes. |
1da177e4 | 357 | */ |
1da177e4 | 358 | if (mp->m_quotainfo) { |
e57481dc CH |
359 | if (mp->m_quotainfo->qi_uquotaip) { |
360 | IRELE(mp->m_quotainfo->qi_uquotaip); | |
361 | mp->m_quotainfo->qi_uquotaip = NULL; | |
1da177e4 | 362 | } |
e57481dc CH |
363 | if (mp->m_quotainfo->qi_gquotaip) { |
364 | IRELE(mp->m_quotainfo->qi_gquotaip); | |
365 | mp->m_quotainfo->qi_gquotaip = NULL; | |
1da177e4 LT |
366 | } |
367 | } | |
1da177e4 LT |
368 | } |
369 | ||
1da177e4 LT |
370 | STATIC int |
371 | xfs_qm_dqattach_one( | |
372 | xfs_inode_t *ip, | |
373 | xfs_dqid_t id, | |
374 | uint type, | |
375 | uint doalloc, | |
1da177e4 LT |
376 | xfs_dquot_t *udqhint, /* hint */ |
377 | xfs_dquot_t **IO_idqpp) | |
378 | { | |
379 | xfs_dquot_t *dqp; | |
380 | int error; | |
381 | ||
579aa9ca | 382 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 383 | error = 0; |
8e9b6e7f | 384 | |
1da177e4 LT |
385 | /* |
386 | * See if we already have it in the inode itself. IO_idqpp is | |
387 | * &i_udquot or &i_gdquot. This made the code look weird, but | |
388 | * made the logic a lot simpler. | |
389 | */ | |
8e9b6e7f CH |
390 | dqp = *IO_idqpp; |
391 | if (dqp) { | |
0b1b213f | 392 | trace_xfs_dqattach_found(dqp); |
8e9b6e7f | 393 | return 0; |
1da177e4 LT |
394 | } |
395 | ||
396 | /* | |
397 | * udqhint is the i_udquot field in inode, and is non-NULL only | |
c8ad20ff | 398 | * when the type arg is group/project. Its purpose is to save a |
1da177e4 LT |
399 | * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside |
400 | * the user dquot. | |
401 | */ | |
8e9b6e7f CH |
402 | if (udqhint) { |
403 | ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); | |
1da177e4 LT |
404 | xfs_dqlock(udqhint); |
405 | ||
8e9b6e7f CH |
406 | /* |
407 | * No need to take dqlock to look at the id. | |
408 | * | |
409 | * The ID can't change until it gets reclaimed, and it won't | |
410 | * be reclaimed as long as we have a ref from inode and we | |
411 | * hold the ilock. | |
412 | */ | |
413 | dqp = udqhint->q_gdquot; | |
414 | if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) { | |
8e9b6e7f | 415 | ASSERT(*IO_idqpp == NULL); |
8e9b6e7f | 416 | |
78e55892 | 417 | *IO_idqpp = xfs_qm_dqhold(dqp); |
1da177e4 | 418 | xfs_dqunlock(udqhint); |
8e9b6e7f | 419 | return 0; |
1da177e4 | 420 | } |
8e9b6e7f CH |
421 | |
422 | /* | |
423 | * We can't hold a dquot lock when we call the dqget code. | |
424 | * We'll deadlock in no time, because of (not conforming to) | |
425 | * lock ordering - the inodelock comes before any dquot lock, | |
426 | * and we may drop and reacquire the ilock in xfs_qm_dqget(). | |
427 | */ | |
1da177e4 | 428 | xfs_dqunlock(udqhint); |
8e9b6e7f CH |
429 | } |
430 | ||
1da177e4 LT |
431 | /* |
432 | * Find the dquot from somewhere. This bumps the | |
433 | * reference count of dquot and returns it locked. | |
434 | * This can return ENOENT if dquot didn't exist on | |
435 | * disk and we didn't ask it to allocate; | |
436 | * ESRCH if quotas got turned off suddenly. | |
437 | */ | |
db3e74b5 MH |
438 | error = xfs_qm_dqget(ip->i_mount, ip, id, type, |
439 | doalloc | XFS_QMOPT_DOWARN, &dqp); | |
8e9b6e7f CH |
440 | if (error) |
441 | return error; | |
1da177e4 | 442 | |
0b1b213f | 443 | trace_xfs_dqattach_get(dqp); |
8e9b6e7f | 444 | |
1da177e4 LT |
445 | /* |
446 | * dqget may have dropped and re-acquired the ilock, but it guarantees | |
447 | * that the dquot returned is the one that should go in the inode. | |
448 | */ | |
449 | *IO_idqpp = dqp; | |
8e9b6e7f CH |
450 | xfs_dqunlock(dqp); |
451 | return 0; | |
1da177e4 LT |
452 | } |
453 | ||
454 | ||
455 | /* | |
456 | * Given a udquot and gdquot, attach a ptr to the group dquot in the | |
ab680bb7 | 457 | * udquot as a hint for future lookups. |
1da177e4 LT |
458 | */ |
459 | STATIC void | |
460 | xfs_qm_dqattach_grouphint( | |
461 | xfs_dquot_t *udq, | |
8e9b6e7f | 462 | xfs_dquot_t *gdq) |
1da177e4 LT |
463 | { |
464 | xfs_dquot_t *tmp; | |
465 | ||
8e9b6e7f | 466 | xfs_dqlock(udq); |
1da177e4 | 467 | |
ab680bb7 CH |
468 | tmp = udq->q_gdquot; |
469 | if (tmp) { | |
470 | if (tmp == gdq) | |
471 | goto done; | |
1da177e4 LT |
472 | |
473 | udq->q_gdquot = NULL; | |
1da177e4 | 474 | xfs_qm_dqrele(tmp); |
1da177e4 | 475 | } |
8e9b6e7f | 476 | |
78e55892 | 477 | udq->q_gdquot = xfs_qm_dqhold(gdq); |
ab680bb7 | 478 | done: |
8e9b6e7f | 479 | xfs_dqunlock(udq); |
1da177e4 LT |
480 | } |
481 | ||
b4d05e30 CH |
482 | static bool |
483 | xfs_qm_need_dqattach( | |
484 | struct xfs_inode *ip) | |
485 | { | |
486 | struct xfs_mount *mp = ip->i_mount; | |
487 | ||
488 | if (!XFS_IS_QUOTA_RUNNING(mp)) | |
489 | return false; | |
490 | if (!XFS_IS_QUOTA_ON(mp)) | |
491 | return false; | |
492 | if (!XFS_NOT_DQATTACHED(mp, ip)) | |
493 | return false; | |
9cad19d2 | 494 | if (xfs_is_quota_inode(&mp->m_sb, ip->i_ino)) |
b4d05e30 CH |
495 | return false; |
496 | return true; | |
497 | } | |
1da177e4 LT |
498 | |
499 | /* | |
c8ad20ff NS |
500 | * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON |
501 | * into account. | |
1da177e4 | 502 | * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. |
1da177e4 LT |
503 | * Inode may get unlocked and relocked in here, and the caller must deal with |
504 | * the consequences. | |
505 | */ | |
506 | int | |
7d095257 | 507 | xfs_qm_dqattach_locked( |
1da177e4 LT |
508 | xfs_inode_t *ip, |
509 | uint flags) | |
510 | { | |
511 | xfs_mount_t *mp = ip->i_mount; | |
512 | uint nquotas = 0; | |
513 | int error = 0; | |
514 | ||
b4d05e30 | 515 | if (!xfs_qm_need_dqattach(ip)) |
014c2544 | 516 | return 0; |
1da177e4 | 517 | |
7d095257 | 518 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
519 | |
520 | if (XFS_IS_UQUOTA_ON(mp)) { | |
521 | error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, | |
522 | flags & XFS_QMOPT_DQALLOC, | |
1da177e4 LT |
523 | NULL, &ip->i_udquot); |
524 | if (error) | |
525 | goto done; | |
526 | nquotas++; | |
527 | } | |
579aa9ca CH |
528 | |
529 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); | |
c8ad20ff NS |
530 | if (XFS_IS_OQUOTA_ON(mp)) { |
531 | error = XFS_IS_GQUOTA_ON(mp) ? | |
532 | xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, | |
533 | flags & XFS_QMOPT_DQALLOC, | |
c8ad20ff | 534 | ip->i_udquot, &ip->i_gdquot) : |
6743099c | 535 | xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ, |
1da177e4 | 536 | flags & XFS_QMOPT_DQALLOC, |
1da177e4 LT |
537 | ip->i_udquot, &ip->i_gdquot); |
538 | /* | |
539 | * Don't worry about the udquot that we may have | |
540 | * attached above. It'll get detached, if not already. | |
541 | */ | |
542 | if (error) | |
543 | goto done; | |
544 | nquotas++; | |
545 | } | |
546 | ||
547 | /* | |
548 | * Attach this group quota to the user quota as a hint. | |
549 | * This WON'T, in general, result in a thrash. | |
550 | */ | |
551 | if (nquotas == 2) { | |
579aa9ca | 552 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
553 | ASSERT(ip->i_udquot); |
554 | ASSERT(ip->i_gdquot); | |
555 | ||
556 | /* | |
ab680bb7 CH |
557 | * We do not have i_udquot locked at this point, but this check |
558 | * is OK since we don't depend on the i_gdquot to be accurate | |
559 | * 100% all the time. It is just a hint, and this will | |
560 | * succeed in general. | |
1da177e4 | 561 | */ |
ab680bb7 CH |
562 | if (ip->i_udquot->q_gdquot != ip->i_gdquot) |
563 | xfs_qm_dqattach_grouphint(ip->i_udquot, ip->i_gdquot); | |
1da177e4 LT |
564 | } |
565 | ||
7d095257 | 566 | done: |
ea15ab3c CH |
567 | #ifdef DEBUG |
568 | if (!error) { | |
1da177e4 LT |
569 | if (XFS_IS_UQUOTA_ON(mp)) |
570 | ASSERT(ip->i_udquot); | |
c8ad20ff | 571 | if (XFS_IS_OQUOTA_ON(mp)) |
1da177e4 LT |
572 | ASSERT(ip->i_gdquot); |
573 | } | |
7d095257 | 574 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 575 | #endif |
7d095257 CH |
576 | return error; |
577 | } | |
1da177e4 | 578 | |
7d095257 CH |
579 | int |
580 | xfs_qm_dqattach( | |
581 | struct xfs_inode *ip, | |
582 | uint flags) | |
583 | { | |
584 | int error; | |
585 | ||
b4d05e30 CH |
586 | if (!xfs_qm_need_dqattach(ip)) |
587 | return 0; | |
588 | ||
7d095257 CH |
589 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
590 | error = xfs_qm_dqattach_locked(ip, flags); | |
591 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1da177e4 | 592 | |
014c2544 | 593 | return error; |
1da177e4 LT |
594 | } |
595 | ||
596 | /* | |
597 | * Release dquots (and their references) if any. | |
598 | * The inode should be locked EXCL except when this's called by | |
599 | * xfs_ireclaim. | |
600 | */ | |
601 | void | |
602 | xfs_qm_dqdetach( | |
603 | xfs_inode_t *ip) | |
604 | { | |
605 | if (!(ip->i_udquot || ip->i_gdquot)) | |
606 | return; | |
607 | ||
0b1b213f CH |
608 | trace_xfs_dquot_dqdetach(ip); |
609 | ||
9cad19d2 | 610 | ASSERT(!xfs_is_quota_inode(&ip->i_mount->m_sb, ip->i_ino)); |
1da177e4 LT |
611 | if (ip->i_udquot) { |
612 | xfs_qm_dqrele(ip->i_udquot); | |
613 | ip->i_udquot = NULL; | |
614 | } | |
615 | if (ip->i_gdquot) { | |
616 | xfs_qm_dqrele(ip->i_gdquot); | |
617 | ip->i_gdquot = NULL; | |
618 | } | |
619 | } | |
620 | ||
3fe58f30 CH |
621 | int |
622 | xfs_qm_calc_dquots_per_chunk( | |
623 | struct xfs_mount *mp, | |
624 | unsigned int nbblks) /* basic block units */ | |
625 | { | |
626 | unsigned int ndquots; | |
627 | ||
628 | ASSERT(nbblks > 0); | |
629 | ndquots = BBTOB(nbblks); | |
630 | do_div(ndquots, sizeof(xfs_dqblk_t)); | |
631 | ||
632 | return ndquots; | |
633 | } | |
634 | ||
1da177e4 LT |
635 | /* |
636 | * This initializes all the quota information that's kept in the | |
637 | * mount structure | |
638 | */ | |
ba0f32d4 | 639 | STATIC int |
1da177e4 LT |
640 | xfs_qm_init_quotainfo( |
641 | xfs_mount_t *mp) | |
642 | { | |
643 | xfs_quotainfo_t *qinf; | |
644 | int error; | |
645 | xfs_dquot_t *dqp; | |
646 | ||
647 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
648 | ||
1da177e4 LT |
649 | qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); |
650 | ||
651 | /* | |
652 | * See if quotainodes are setup, and if not, allocate them, | |
653 | * and change the superblock accordingly. | |
654 | */ | |
655 | if ((error = xfs_qm_init_quotainos(mp))) { | |
f0e2d93c | 656 | kmem_free(qinf); |
1da177e4 | 657 | mp->m_quotainfo = NULL; |
014c2544 | 658 | return error; |
1da177e4 LT |
659 | } |
660 | ||
9f920f11 CH |
661 | INIT_RADIX_TREE(&qinf->qi_uquota_tree, GFP_NOFS); |
662 | INIT_RADIX_TREE(&qinf->qi_gquota_tree, GFP_NOFS); | |
663 | mutex_init(&qinf->qi_tree_lock); | |
664 | ||
f8739c3c CH |
665 | INIT_LIST_HEAD(&qinf->qi_lru_list); |
666 | qinf->qi_lru_count = 0; | |
667 | mutex_init(&qinf->qi_lru_lock); | |
668 | ||
1da177e4 | 669 | /* mutex used to serialize quotaoffs */ |
794ee1ba | 670 | mutex_init(&qinf->qi_quotaofflock); |
1da177e4 LT |
671 | |
672 | /* Precalc some constants */ | |
673 | qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
3fe58f30 CH |
674 | qinf->qi_dqperchunk = xfs_qm_calc_dquots_per_chunk(mp, |
675 | qinf->qi_dqchunklen); | |
1da177e4 LT |
676 | |
677 | mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); | |
678 | ||
679 | /* | |
680 | * We try to get the limits from the superuser's limits fields. | |
681 | * This is quite hacky, but it is standard quota practice. | |
7ae44407 | 682 | * |
1da177e4 LT |
683 | * We look at the USR dquot with id == 0 first, but if user quotas |
684 | * are not enabled we goto the GRP dquot with id == 0. | |
685 | * We don't really care to keep separate default limits for user | |
686 | * and group quotas, at least not at this point. | |
7ae44407 CH |
687 | * |
688 | * Since we may not have done a quotacheck by this point, just read | |
689 | * the dquot without attaching it to any hashtables or lists. | |
1da177e4 | 690 | */ |
7ae44407 CH |
691 | error = xfs_qm_dqread(mp, 0, |
692 | XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : | |
693 | (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : | |
694 | XFS_DQ_PROJ), | |
695 | XFS_QMOPT_DOWARN, &dqp); | |
696 | if (!error) { | |
1da177e4 LT |
697 | xfs_disk_dquot_t *ddqp = &dqp->q_core; |
698 | ||
699 | /* | |
700 | * The warnings and timers set the grace period given to | |
701 | * a user or group before he or she can not perform any | |
702 | * more writing. If it is zero, a default is used. | |
703 | */ | |
1149d96a CH |
704 | qinf->qi_btimelimit = ddqp->d_btimer ? |
705 | be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; | |
706 | qinf->qi_itimelimit = ddqp->d_itimer ? | |
707 | be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; | |
708 | qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? | |
709 | be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; | |
710 | qinf->qi_bwarnlimit = ddqp->d_bwarns ? | |
711 | be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; | |
712 | qinf->qi_iwarnlimit = ddqp->d_iwarns ? | |
713 | be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; | |
714 | qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? | |
715 | be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; | |
716 | qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); | |
717 | qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); | |
718 | qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); | |
719 | qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); | |
720 | qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); | |
721 | qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); | |
1da177e4 | 722 | |
1da177e4 LT |
723 | xfs_qm_dqdestroy(dqp); |
724 | } else { | |
725 | qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; | |
726 | qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; | |
727 | qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; | |
728 | qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; | |
729 | qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; | |
06d10dd9 | 730 | qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; |
1da177e4 LT |
731 | } |
732 | ||
f8739c3c CH |
733 | qinf->qi_shrinker.shrink = xfs_qm_shake; |
734 | qinf->qi_shrinker.seeks = DEFAULT_SEEKS; | |
735 | register_shrinker(&qinf->qi_shrinker); | |
014c2544 | 736 | return 0; |
1da177e4 LT |
737 | } |
738 | ||
739 | ||
740 | /* | |
741 | * Gets called when unmounting a filesystem or when all quotas get | |
742 | * turned off. | |
743 | * This purges the quota inodes, destroys locks and frees itself. | |
744 | */ | |
745 | void | |
746 | xfs_qm_destroy_quotainfo( | |
747 | xfs_mount_t *mp) | |
748 | { | |
749 | xfs_quotainfo_t *qi; | |
750 | ||
751 | qi = mp->m_quotainfo; | |
752 | ASSERT(qi != NULL); | |
1da177e4 | 753 | |
f8739c3c CH |
754 | unregister_shrinker(&qi->qi_shrinker); |
755 | ||
1da177e4 | 756 | if (qi->qi_uquotaip) { |
26cc0021 | 757 | IRELE(qi->qi_uquotaip); |
1da177e4 LT |
758 | qi->qi_uquotaip = NULL; /* paranoia */ |
759 | } | |
760 | if (qi->qi_gquotaip) { | |
26cc0021 | 761 | IRELE(qi->qi_gquotaip); |
1da177e4 LT |
762 | qi->qi_gquotaip = NULL; |
763 | } | |
764 | mutex_destroy(&qi->qi_quotaofflock); | |
f0e2d93c | 765 | kmem_free(qi); |
1da177e4 LT |
766 | mp->m_quotainfo = NULL; |
767 | } | |
768 | ||
1da177e4 LT |
769 | /* |
770 | * Create an inode and return with a reference already taken, but unlocked | |
771 | * This is how we create quota inodes | |
772 | */ | |
773 | STATIC int | |
774 | xfs_qm_qino_alloc( | |
775 | xfs_mount_t *mp, | |
776 | xfs_inode_t **ip, | |
777 | __int64_t sbfields, | |
778 | uint flags) | |
779 | { | |
780 | xfs_trans_t *tp; | |
781 | int error; | |
1da177e4 LT |
782 | int committed; |
783 | ||
061f7209 | 784 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); |
1da177e4 LT |
785 | if ((error = xfs_trans_reserve(tp, |
786 | XFS_QM_QINOCREATE_SPACE_RES(mp), | |
787 | XFS_CREATE_LOG_RES(mp), 0, | |
788 | XFS_TRANS_PERM_LOG_RES, | |
789 | XFS_CREATE_LOG_COUNT))) { | |
790 | xfs_trans_cancel(tp, 0); | |
014c2544 | 791 | return error; |
1da177e4 | 792 | } |
1da177e4 | 793 | |
6c77b0ea CH |
794 | error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip, &committed); |
795 | if (error) { | |
1da177e4 LT |
796 | xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | |
797 | XFS_TRANS_ABORT); | |
014c2544 | 798 | return error; |
1da177e4 LT |
799 | } |
800 | ||
1da177e4 LT |
801 | /* |
802 | * Make the changes in the superblock, and log those too. | |
803 | * sbfields arg may contain fields other than *QUOTINO; | |
804 | * VERSIONNUM for example. | |
805 | */ | |
3685c2a1 | 806 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 807 | if (flags & XFS_QMOPT_SBVERSION) { |
62118709 | 808 | ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); |
1da177e4 LT |
809 | ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
810 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)) == | |
811 | (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
812 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)); | |
813 | ||
62118709 | 814 | xfs_sb_version_addquota(&mp->m_sb); |
1da177e4 LT |
815 | mp->m_sb.sb_uquotino = NULLFSINO; |
816 | mp->m_sb.sb_gquotino = NULLFSINO; | |
817 | ||
818 | /* qflags will get updated _after_ quotacheck */ | |
819 | mp->m_sb.sb_qflags = 0; | |
1da177e4 LT |
820 | } |
821 | if (flags & XFS_QMOPT_UQUOTA) | |
822 | mp->m_sb.sb_uquotino = (*ip)->i_ino; | |
823 | else | |
824 | mp->m_sb.sb_gquotino = (*ip)->i_ino; | |
3685c2a1 | 825 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
826 | xfs_mod_sb(tp, sbfields); |
827 | ||
1c72bf90 | 828 | if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { |
53487786 | 829 | xfs_alert(mp, "%s failed (error %d)!", __func__, error); |
014c2544 | 830 | return error; |
1da177e4 | 831 | } |
014c2544 | 832 | return 0; |
1da177e4 LT |
833 | } |
834 | ||
835 | ||
5b139738 | 836 | STATIC void |
1da177e4 LT |
837 | xfs_qm_reset_dqcounts( |
838 | xfs_mount_t *mp, | |
839 | xfs_buf_t *bp, | |
840 | xfs_dqid_t id, | |
841 | uint type) | |
842 | { | |
6fcdc59d | 843 | struct xfs_dqblk *dqb; |
1da177e4 LT |
844 | int j; |
845 | ||
0b1b213f CH |
846 | trace_xfs_reset_dqcounts(bp, _RET_IP_); |
847 | ||
1da177e4 LT |
848 | /* |
849 | * Reset all counters and timers. They'll be | |
850 | * started afresh by xfs_qm_quotacheck. | |
851 | */ | |
852 | #ifdef DEBUG | |
853 | j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
854 | do_div(j, sizeof(xfs_dqblk_t)); | |
8a7b8a89 | 855 | ASSERT(mp->m_quotainfo->qi_dqperchunk == j); |
1da177e4 | 856 | #endif |
6fcdc59d | 857 | dqb = bp->b_addr; |
8a7b8a89 | 858 | for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { |
6fcdc59d DC |
859 | struct xfs_disk_dquot *ddq; |
860 | ||
861 | ddq = (struct xfs_disk_dquot *)&dqb[j]; | |
862 | ||
1da177e4 LT |
863 | /* |
864 | * Do a sanity check, and if needed, repair the dqblk. Don't | |
865 | * output any warnings because it's perfectly possible to | |
c41564b5 | 866 | * find uninitialised dquot blks. See comment in xfs_qm_dqcheck. |
1da177e4 | 867 | */ |
a0fa2b67 | 868 | (void) xfs_qm_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR, |
1da177e4 | 869 | "xfs_quotacheck"); |
1149d96a CH |
870 | ddq->d_bcount = 0; |
871 | ddq->d_icount = 0; | |
872 | ddq->d_rtbcount = 0; | |
873 | ddq->d_btimer = 0; | |
874 | ddq->d_itimer = 0; | |
875 | ddq->d_rtbtimer = 0; | |
876 | ddq->d_bwarns = 0; | |
877 | ddq->d_iwarns = 0; | |
878 | ddq->d_rtbwarns = 0; | |
6fcdc59d DC |
879 | |
880 | if (xfs_sb_version_hascrc(&mp->m_sb)) { | |
881 | xfs_update_cksum((char *)&dqb[j], | |
882 | sizeof(struct xfs_dqblk), | |
883 | XFS_DQUOT_CRC_OFF); | |
884 | } | |
1da177e4 | 885 | } |
1da177e4 LT |
886 | } |
887 | ||
888 | STATIC int | |
889 | xfs_qm_dqiter_bufs( | |
43ff2122 CH |
890 | struct xfs_mount *mp, |
891 | xfs_dqid_t firstid, | |
892 | xfs_fsblock_t bno, | |
893 | xfs_filblks_t blkcnt, | |
894 | uint flags, | |
895 | struct list_head *buffer_list) | |
1da177e4 | 896 | { |
43ff2122 CH |
897 | struct xfs_buf *bp; |
898 | int error; | |
899 | int type; | |
1da177e4 LT |
900 | |
901 | ASSERT(blkcnt > 0); | |
c8ad20ff NS |
902 | type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : |
903 | (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); | |
1da177e4 LT |
904 | error = 0; |
905 | ||
906 | /* | |
907 | * Blkcnt arg can be a very big number, and might even be | |
908 | * larger than the log itself. So, we have to break it up into | |
909 | * manageable-sized transactions. | |
910 | * Note that we don't start a permanent transaction here; we might | |
911 | * not be able to get a log reservation for the whole thing up front, | |
912 | * and we don't really care to either, because we just discard | |
913 | * everything if we were to crash in the middle of this loop. | |
914 | */ | |
915 | while (blkcnt--) { | |
916 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
917 | XFS_FSB_TO_DADDR(mp, bno), | |
c6319198 | 918 | mp->m_quotainfo->qi_dqchunklen, 0, &bp, |
1813dd64 | 919 | &xfs_dquot_buf_ops); |
1da177e4 | 920 | |
3fe58f30 | 921 | /* |
6fcdc59d DC |
922 | * CRC and validation errors will return a EFSCORRUPTED here. If |
923 | * this occurs, re-read without CRC validation so that we can | |
924 | * repair the damage via xfs_qm_reset_dqcounts(). This process | |
925 | * will leave a trace in the log indicating corruption has | |
926 | * been detected. | |
3fe58f30 | 927 | */ |
6fcdc59d DC |
928 | if (error == EFSCORRUPTED) { |
929 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
930 | XFS_FSB_TO_DADDR(mp, bno), | |
931 | mp->m_quotainfo->qi_dqchunklen, 0, &bp, | |
932 | NULL); | |
933 | } | |
934 | ||
935 | if (error) | |
936 | break; | |
937 | ||
5b139738 | 938 | xfs_qm_reset_dqcounts(mp, bp, firstid, type); |
43ff2122 | 939 | xfs_buf_delwri_queue(bp, buffer_list); |
61551f1e | 940 | xfs_buf_relse(bp); |
6fcdc59d DC |
941 | |
942 | /* goto the next block. */ | |
1da177e4 | 943 | bno++; |
8a7b8a89 | 944 | firstid += mp->m_quotainfo->qi_dqperchunk; |
1da177e4 | 945 | } |
43ff2122 | 946 | |
014c2544 | 947 | return error; |
1da177e4 LT |
948 | } |
949 | ||
950 | /* | |
c8ad20ff | 951 | * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a |
1da177e4 LT |
952 | * caller supplied function for every chunk of dquots that we find. |
953 | */ | |
954 | STATIC int | |
955 | xfs_qm_dqiterate( | |
43ff2122 CH |
956 | struct xfs_mount *mp, |
957 | struct xfs_inode *qip, | |
958 | uint flags, | |
959 | struct list_head *buffer_list) | |
1da177e4 | 960 | { |
43ff2122 | 961 | struct xfs_bmbt_irec *map; |
1da177e4 LT |
962 | int i, nmaps; /* number of map entries */ |
963 | int error; /* return value */ | |
964 | xfs_fileoff_t lblkno; | |
965 | xfs_filblks_t maxlblkcnt; | |
966 | xfs_dqid_t firstid; | |
967 | xfs_fsblock_t rablkno; | |
968 | xfs_filblks_t rablkcnt; | |
969 | ||
970 | error = 0; | |
971 | /* | |
c41564b5 | 972 | * This looks racy, but we can't keep an inode lock across a |
1da177e4 LT |
973 | * trans_reserve. But, this gets called during quotacheck, and that |
974 | * happens only at mount time which is single threaded. | |
975 | */ | |
976 | if (qip->i_d.di_nblocks == 0) | |
014c2544 | 977 | return 0; |
1da177e4 LT |
978 | |
979 | map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); | |
980 | ||
981 | lblkno = 0; | |
32972383 | 982 | maxlblkcnt = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes); |
1da177e4 LT |
983 | do { |
984 | nmaps = XFS_DQITER_MAP_SIZE; | |
985 | /* | |
986 | * We aren't changing the inode itself. Just changing | |
987 | * some of its data. No new blocks are added here, and | |
988 | * the inode is never added to the transaction. | |
989 | */ | |
990 | xfs_ilock(qip, XFS_ILOCK_SHARED); | |
5c8ed202 DC |
991 | error = xfs_bmapi_read(qip, lblkno, maxlblkcnt - lblkno, |
992 | map, &nmaps, 0); | |
1da177e4 LT |
993 | xfs_iunlock(qip, XFS_ILOCK_SHARED); |
994 | if (error) | |
995 | break; | |
996 | ||
997 | ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); | |
998 | for (i = 0; i < nmaps; i++) { | |
999 | ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); | |
1000 | ASSERT(map[i].br_blockcount); | |
1001 | ||
1002 | ||
1003 | lblkno += map[i].br_blockcount; | |
1004 | ||
1005 | if (map[i].br_startblock == HOLESTARTBLOCK) | |
1006 | continue; | |
1007 | ||
1008 | firstid = (xfs_dqid_t) map[i].br_startoff * | |
8a7b8a89 | 1009 | mp->m_quotainfo->qi_dqperchunk; |
1da177e4 LT |
1010 | /* |
1011 | * Do a read-ahead on the next extent. | |
1012 | */ | |
1013 | if ((i+1 < nmaps) && | |
1014 | (map[i+1].br_startblock != HOLESTARTBLOCK)) { | |
1015 | rablkcnt = map[i+1].br_blockcount; | |
1016 | rablkno = map[i+1].br_startblock; | |
1017 | while (rablkcnt--) { | |
1a1a3e97 | 1018 | xfs_buf_readahead(mp->m_ddev_targp, |
1da177e4 | 1019 | XFS_FSB_TO_DADDR(mp, rablkno), |
c3f8fc73 DC |
1020 | mp->m_quotainfo->qi_dqchunklen, |
1021 | NULL); | |
1da177e4 LT |
1022 | rablkno++; |
1023 | } | |
1024 | } | |
1025 | /* | |
1026 | * Iterate thru all the blks in the extent and | |
1027 | * reset the counters of all the dquots inside them. | |
1028 | */ | |
43ff2122 CH |
1029 | error = xfs_qm_dqiter_bufs(mp, firstid, |
1030 | map[i].br_startblock, | |
1031 | map[i].br_blockcount, | |
1032 | flags, buffer_list); | |
1033 | if (error) | |
1034 | goto out; | |
1da177e4 | 1035 | } |
1da177e4 LT |
1036 | } while (nmaps > 0); |
1037 | ||
43ff2122 | 1038 | out: |
f0e2d93c | 1039 | kmem_free(map); |
014c2544 | 1040 | return error; |
1da177e4 LT |
1041 | } |
1042 | ||
1043 | /* | |
1044 | * Called by dqusage_adjust in doing a quotacheck. | |
52fda114 CH |
1045 | * |
1046 | * Given the inode, and a dquot id this updates both the incore dqout as well | |
1047 | * as the buffer copy. This is so that once the quotacheck is done, we can | |
1048 | * just log all the buffers, as opposed to logging numerous updates to | |
1049 | * individual dquots. | |
1da177e4 | 1050 | */ |
52fda114 | 1051 | STATIC int |
1da177e4 | 1052 | xfs_qm_quotacheck_dqadjust( |
52fda114 CH |
1053 | struct xfs_inode *ip, |
1054 | xfs_dqid_t id, | |
1055 | uint type, | |
1da177e4 LT |
1056 | xfs_qcnt_t nblks, |
1057 | xfs_qcnt_t rtblks) | |
1058 | { | |
52fda114 CH |
1059 | struct xfs_mount *mp = ip->i_mount; |
1060 | struct xfs_dquot *dqp; | |
1061 | int error; | |
1062 | ||
1063 | error = xfs_qm_dqget(mp, ip, id, type, | |
1064 | XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp); | |
1065 | if (error) { | |
1066 | /* | |
1067 | * Shouldn't be able to turn off quotas here. | |
1068 | */ | |
1069 | ASSERT(error != ESRCH); | |
1070 | ASSERT(error != ENOENT); | |
1071 | return error; | |
1072 | } | |
0b1b213f CH |
1073 | |
1074 | trace_xfs_dqadjust(dqp); | |
1075 | ||
1da177e4 LT |
1076 | /* |
1077 | * Adjust the inode count and the block count to reflect this inode's | |
1078 | * resource usage. | |
1079 | */ | |
413d57c9 | 1080 | be64_add_cpu(&dqp->q_core.d_icount, 1); |
1da177e4 LT |
1081 | dqp->q_res_icount++; |
1082 | if (nblks) { | |
413d57c9 | 1083 | be64_add_cpu(&dqp->q_core.d_bcount, nblks); |
1da177e4 LT |
1084 | dqp->q_res_bcount += nblks; |
1085 | } | |
1086 | if (rtblks) { | |
413d57c9 | 1087 | be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); |
1da177e4 LT |
1088 | dqp->q_res_rtbcount += rtblks; |
1089 | } | |
1090 | ||
1091 | /* | |
1092 | * Set default limits, adjust timers (since we changed usages) | |
191f8488 CH |
1093 | * |
1094 | * There are no timers for the default values set in the root dquot. | |
1da177e4 | 1095 | */ |
191f8488 | 1096 | if (dqp->q_core.d_id) { |
4b6eae2e | 1097 | xfs_qm_adjust_dqlimits(mp, dqp); |
52fda114 | 1098 | xfs_qm_adjust_dqtimers(mp, &dqp->q_core); |
1da177e4 LT |
1099 | } |
1100 | ||
1101 | dqp->dq_flags |= XFS_DQ_DIRTY; | |
52fda114 CH |
1102 | xfs_qm_dqput(dqp); |
1103 | return 0; | |
1da177e4 LT |
1104 | } |
1105 | ||
1106 | STATIC int | |
1107 | xfs_qm_get_rtblks( | |
1108 | xfs_inode_t *ip, | |
1109 | xfs_qcnt_t *O_rtblks) | |
1110 | { | |
1111 | xfs_filblks_t rtblks; /* total rt blks */ | |
4eea22f0 | 1112 | xfs_extnum_t idx; /* extent record index */ |
1da177e4 LT |
1113 | xfs_ifork_t *ifp; /* inode fork pointer */ |
1114 | xfs_extnum_t nextents; /* number of extent entries */ | |
1da177e4 LT |
1115 | int error; |
1116 | ||
1117 | ASSERT(XFS_IS_REALTIME_INODE(ip)); | |
1118 | ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); | |
1119 | if (!(ifp->if_flags & XFS_IFEXTENTS)) { | |
1120 | if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) | |
014c2544 | 1121 | return error; |
1da177e4 LT |
1122 | } |
1123 | rtblks = 0; | |
4eea22f0 | 1124 | nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); |
a6f64d4a CH |
1125 | for (idx = 0; idx < nextents; idx++) |
1126 | rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); | |
1da177e4 | 1127 | *O_rtblks = (xfs_qcnt_t)rtblks; |
014c2544 | 1128 | return 0; |
1da177e4 LT |
1129 | } |
1130 | ||
1131 | /* | |
1132 | * callback routine supplied to bulkstat(). Given an inumber, find its | |
1133 | * dquots and update them to account for resources taken by that inode. | |
1134 | */ | |
1135 | /* ARGSUSED */ | |
1136 | STATIC int | |
1137 | xfs_qm_dqusage_adjust( | |
1138 | xfs_mount_t *mp, /* mount point for filesystem */ | |
1139 | xfs_ino_t ino, /* inode number to get data for */ | |
1140 | void __user *buffer, /* not used */ | |
1141 | int ubsize, /* not used */ | |
1da177e4 | 1142 | int *ubused, /* not used */ |
1da177e4 LT |
1143 | int *res) /* result code value */ |
1144 | { | |
1145 | xfs_inode_t *ip; | |
52fda114 | 1146 | xfs_qcnt_t nblks, rtblks = 0; |
1da177e4 LT |
1147 | int error; |
1148 | ||
1149 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
1150 | ||
1151 | /* | |
1152 | * rootino must have its resources accounted for, not so with the quota | |
1153 | * inodes. | |
1154 | */ | |
9cad19d2 | 1155 | if (xfs_is_quota_inode(&mp->m_sb, ino)) { |
1da177e4 LT |
1156 | *res = BULKSTAT_RV_NOTHING; |
1157 | return XFS_ERROR(EINVAL); | |
1158 | } | |
1159 | ||
1160 | /* | |
1161 | * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget | |
1162 | * interface expects the inode to be exclusively locked because that's | |
1163 | * the case in all other instances. It's OK that we do this because | |
1164 | * quotacheck is done only at mount time. | |
1165 | */ | |
52fda114 CH |
1166 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip); |
1167 | if (error) { | |
1da177e4 | 1168 | *res = BULKSTAT_RV_NOTHING; |
014c2544 | 1169 | return error; |
1da177e4 LT |
1170 | } |
1171 | ||
52fda114 | 1172 | ASSERT(ip->i_delayed_blks == 0); |
1da177e4 | 1173 | |
52fda114 | 1174 | if (XFS_IS_REALTIME_INODE(ip)) { |
1da177e4 LT |
1175 | /* |
1176 | * Walk thru the extent list and count the realtime blocks. | |
1177 | */ | |
52fda114 CH |
1178 | error = xfs_qm_get_rtblks(ip, &rtblks); |
1179 | if (error) | |
1180 | goto error0; | |
1da177e4 | 1181 | } |
1da177e4 | 1182 | |
52fda114 | 1183 | nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; |
1da177e4 LT |
1184 | |
1185 | /* | |
1186 | * Add the (disk blocks and inode) resources occupied by this | |
1187 | * inode to its dquots. We do this adjustment in the incore dquot, | |
1188 | * and also copy the changes to its buffer. | |
1189 | * We don't care about putting these changes in a transaction | |
1190 | * envelope because if we crash in the middle of a 'quotacheck' | |
1191 | * we have to start from the beginning anyway. | |
1192 | * Once we're done, we'll log all the dquot bufs. | |
1193 | * | |
c41564b5 | 1194 | * The *QUOTA_ON checks below may look pretty racy, but quotachecks |
1da177e4 LT |
1195 | * and quotaoffs don't race. (Quotachecks happen at mount time only). |
1196 | */ | |
1197 | if (XFS_IS_UQUOTA_ON(mp)) { | |
52fda114 CH |
1198 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid, |
1199 | XFS_DQ_USER, nblks, rtblks); | |
1200 | if (error) | |
1201 | goto error0; | |
1da177e4 | 1202 | } |
52fda114 CH |
1203 | |
1204 | if (XFS_IS_GQUOTA_ON(mp)) { | |
1205 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid, | |
1206 | XFS_DQ_GROUP, nblks, rtblks); | |
1207 | if (error) | |
1208 | goto error0; | |
1da177e4 | 1209 | } |
1da177e4 | 1210 | |
52fda114 | 1211 | if (XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 1212 | error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip), |
52fda114 CH |
1213 | XFS_DQ_PROJ, nblks, rtblks); |
1214 | if (error) | |
1215 | goto error0; | |
1216 | } | |
1217 | ||
1218 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1219 | IRELE(ip); | |
1da177e4 | 1220 | *res = BULKSTAT_RV_DIDONE; |
014c2544 | 1221 | return 0; |
52fda114 CH |
1222 | |
1223 | error0: | |
1224 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1225 | IRELE(ip); | |
1226 | *res = BULKSTAT_RV_GIVEUP; | |
1227 | return error; | |
1da177e4 LT |
1228 | } |
1229 | ||
b84a3a96 CH |
1230 | STATIC int |
1231 | xfs_qm_flush_one( | |
43ff2122 CH |
1232 | struct xfs_dquot *dqp, |
1233 | void *data) | |
b84a3a96 | 1234 | { |
43ff2122 | 1235 | struct list_head *buffer_list = data; |
fe7257fd | 1236 | struct xfs_buf *bp = NULL; |
b84a3a96 CH |
1237 | int error = 0; |
1238 | ||
1239 | xfs_dqlock(dqp); | |
1240 | if (dqp->dq_flags & XFS_DQ_FREEING) | |
1241 | goto out_unlock; | |
1242 | if (!XFS_DQ_IS_DIRTY(dqp)) | |
1243 | goto out_unlock; | |
1244 | ||
43ff2122 | 1245 | xfs_dqflock(dqp); |
fe7257fd CH |
1246 | error = xfs_qm_dqflush(dqp, &bp); |
1247 | if (error) | |
1248 | goto out_unlock; | |
b84a3a96 | 1249 | |
43ff2122 | 1250 | xfs_buf_delwri_queue(bp, buffer_list); |
fe7257fd | 1251 | xfs_buf_relse(bp); |
b84a3a96 CH |
1252 | out_unlock: |
1253 | xfs_dqunlock(dqp); | |
1254 | return error; | |
1255 | } | |
1256 | ||
1da177e4 LT |
1257 | /* |
1258 | * Walk thru all the filesystem inodes and construct a consistent view | |
1259 | * of the disk quota world. If the quotacheck fails, disable quotas. | |
1260 | */ | |
1261 | int | |
1262 | xfs_qm_quotacheck( | |
1263 | xfs_mount_t *mp) | |
1264 | { | |
113a5683 CS |
1265 | int done, count, error, error2; |
1266 | xfs_ino_t lastino; | |
1267 | size_t structsz; | |
1268 | uint flags; | |
1269 | LIST_HEAD (buffer_list); | |
1270 | struct xfs_inode *uip = mp->m_quotainfo->qi_uquotaip; | |
1271 | struct xfs_inode *gip = mp->m_quotainfo->qi_gquotaip; | |
1da177e4 LT |
1272 | |
1273 | count = INT_MAX; | |
1274 | structsz = 1; | |
1275 | lastino = 0; | |
1276 | flags = 0; | |
1277 | ||
113a5683 | 1278 | ASSERT(uip || gip); |
1da177e4 LT |
1279 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1280 | ||
0b932ccc | 1281 | xfs_notice(mp, "Quotacheck needed: Please wait."); |
1da177e4 LT |
1282 | |
1283 | /* | |
c8ad20ff | 1284 | * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset |
1da177e4 LT |
1285 | * their counters to zero. We need a clean slate. |
1286 | * We don't log our changes till later. | |
1287 | */ | |
8a7b8a89 | 1288 | if (uip) { |
43ff2122 CH |
1289 | error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA, |
1290 | &buffer_list); | |
8a7b8a89 | 1291 | if (error) |
1da177e4 LT |
1292 | goto error_return; |
1293 | flags |= XFS_UQUOTA_CHKD; | |
1294 | } | |
1295 | ||
8a7b8a89 CH |
1296 | if (gip) { |
1297 | error = xfs_qm_dqiterate(mp, gip, XFS_IS_GQUOTA_ON(mp) ? | |
43ff2122 CH |
1298 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA, |
1299 | &buffer_list); | |
8a7b8a89 | 1300 | if (error) |
1da177e4 | 1301 | goto error_return; |
83e782e1 CS |
1302 | flags |= XFS_IS_GQUOTA_ON(mp) ? |
1303 | XFS_GQUOTA_CHKD : XFS_PQUOTA_CHKD; | |
1da177e4 LT |
1304 | } |
1305 | ||
1306 | do { | |
1307 | /* | |
1308 | * Iterate thru all the inodes in the file system, | |
1309 | * adjusting the corresponding dquot counters in core. | |
1310 | */ | |
7dce11db CH |
1311 | error = xfs_bulkstat(mp, &lastino, &count, |
1312 | xfs_qm_dqusage_adjust, | |
1313 | structsz, NULL, &done); | |
1314 | if (error) | |
1da177e4 LT |
1315 | break; |
1316 | ||
7dce11db | 1317 | } while (!done); |
1da177e4 | 1318 | |
4b8879df | 1319 | /* |
b84a3a96 CH |
1320 | * We've made all the changes that we need to make incore. Flush them |
1321 | * down to disk buffers if everything was updated successfully. | |
4b8879df | 1322 | */ |
43ff2122 CH |
1323 | if (XFS_IS_UQUOTA_ON(mp)) { |
1324 | error = xfs_qm_dquot_walk(mp, XFS_DQ_USER, xfs_qm_flush_one, | |
1325 | &buffer_list); | |
1326 | } | |
b84a3a96 | 1327 | if (XFS_IS_GQUOTA_ON(mp)) { |
43ff2122 CH |
1328 | error2 = xfs_qm_dquot_walk(mp, XFS_DQ_GROUP, xfs_qm_flush_one, |
1329 | &buffer_list); | |
b84a3a96 CH |
1330 | if (!error) |
1331 | error = error2; | |
1332 | } | |
1333 | if (XFS_IS_PQUOTA_ON(mp)) { | |
43ff2122 CH |
1334 | error2 = xfs_qm_dquot_walk(mp, XFS_DQ_PROJ, xfs_qm_flush_one, |
1335 | &buffer_list); | |
b84a3a96 CH |
1336 | if (!error) |
1337 | error = error2; | |
1338 | } | |
4b8879df | 1339 | |
43ff2122 CH |
1340 | error2 = xfs_buf_delwri_submit(&buffer_list); |
1341 | if (!error) | |
1342 | error = error2; | |
1343 | ||
1da177e4 LT |
1344 | /* |
1345 | * We can get this error if we couldn't do a dquot allocation inside | |
1346 | * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the | |
1347 | * dirty dquots that might be cached, we just want to get rid of them | |
1348 | * and turn quotaoff. The dquots won't be attached to any of the inodes | |
1349 | * at this point (because we intentionally didn't in dqget_noattach). | |
1350 | */ | |
1351 | if (error) { | |
8112e9dc | 1352 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 LT |
1353 | goto error_return; |
1354 | } | |
1da177e4 | 1355 | |
1da177e4 LT |
1356 | /* |
1357 | * If one type of quotas is off, then it will lose its | |
1358 | * quotachecked status, since we won't be doing accounting for | |
1359 | * that type anymore. | |
1360 | */ | |
4177af3a | 1361 | mp->m_qflags &= ~XFS_ALL_QUOTA_CHKD; |
1da177e4 LT |
1362 | mp->m_qflags |= flags; |
1363 | ||
1da177e4 | 1364 | error_return: |
43ff2122 CH |
1365 | while (!list_empty(&buffer_list)) { |
1366 | struct xfs_buf *bp = | |
1367 | list_first_entry(&buffer_list, struct xfs_buf, b_list); | |
1368 | list_del_init(&bp->b_list); | |
1369 | xfs_buf_relse(bp); | |
1370 | } | |
1371 | ||
1da177e4 | 1372 | if (error) { |
0b932ccc DC |
1373 | xfs_warn(mp, |
1374 | "Quotacheck: Unsuccessful (Error %d): Disabling quotas.", | |
1375 | error); | |
1da177e4 LT |
1376 | /* |
1377 | * We must turn off quotas. | |
1378 | */ | |
1379 | ASSERT(mp->m_quotainfo != NULL); | |
1da177e4 | 1380 | xfs_qm_destroy_quotainfo(mp); |
31d5577b | 1381 | if (xfs_mount_reset_sbqflags(mp)) { |
0b932ccc DC |
1382 | xfs_warn(mp, |
1383 | "Quotacheck: Failed to reset quota flags."); | |
31d5577b | 1384 | } |
0b932ccc DC |
1385 | } else |
1386 | xfs_notice(mp, "Quotacheck: Done."); | |
1da177e4 LT |
1387 | return (error); |
1388 | } | |
1389 | ||
1390 | /* | |
1391 | * This is called after the superblock has been read in and we're ready to | |
1392 | * iget the quota inodes. | |
1393 | */ | |
1394 | STATIC int | |
1395 | xfs_qm_init_quotainos( | |
1396 | xfs_mount_t *mp) | |
1397 | { | |
113a5683 CS |
1398 | struct xfs_inode *uip = NULL; |
1399 | struct xfs_inode *gip = NULL; | |
1400 | int error; | |
1401 | __int64_t sbflags = 0; | |
1402 | uint flags = 0; | |
1da177e4 LT |
1403 | |
1404 | ASSERT(mp->m_quotainfo); | |
1da177e4 LT |
1405 | |
1406 | /* | |
1407 | * Get the uquota and gquota inodes | |
1408 | */ | |
62118709 | 1409 | if (xfs_sb_version_hasquota(&mp->m_sb)) { |
1da177e4 LT |
1410 | if (XFS_IS_UQUOTA_ON(mp) && |
1411 | mp->m_sb.sb_uquotino != NULLFSINO) { | |
1412 | ASSERT(mp->m_sb.sb_uquotino > 0); | |
113a5683 CS |
1413 | error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, |
1414 | 0, 0, &uip); | |
1415 | if (error) | |
1da177e4 LT |
1416 | return XFS_ERROR(error); |
1417 | } | |
c8ad20ff | 1418 | if (XFS_IS_OQUOTA_ON(mp) && |
1da177e4 LT |
1419 | mp->m_sb.sb_gquotino != NULLFSINO) { |
1420 | ASSERT(mp->m_sb.sb_gquotino > 0); | |
113a5683 CS |
1421 | error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, |
1422 | 0, 0, &gip); | |
1423 | if (error) | |
1424 | goto error_rele; | |
1da177e4 LT |
1425 | } |
1426 | } else { | |
1427 | flags |= XFS_QMOPT_SBVERSION; | |
1428 | sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1429 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS); | |
1430 | } | |
1431 | ||
1432 | /* | |
1433 | * Create the two inodes, if they don't exist already. The changes | |
1434 | * made above will get added to a transaction and logged in one of | |
1435 | * the qino_alloc calls below. If the device is readonly, | |
1436 | * temporarily switch to read-write to do this. | |
1437 | */ | |
1438 | if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { | |
113a5683 | 1439 | error = xfs_qm_qino_alloc(mp, &uip, |
1da177e4 | 1440 | sbflags | XFS_SB_UQUOTINO, |
113a5683 CS |
1441 | flags | XFS_QMOPT_UQUOTA); |
1442 | if (error) | |
1443 | goto error_rele; | |
1da177e4 LT |
1444 | |
1445 | flags &= ~XFS_QMOPT_SBVERSION; | |
1446 | } | |
c8ad20ff NS |
1447 | if (XFS_IS_OQUOTA_ON(mp) && gip == NULL) { |
1448 | flags |= (XFS_IS_GQUOTA_ON(mp) ? | |
1449 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1450 | error = xfs_qm_qino_alloc(mp, &gip, | |
1451 | sbflags | XFS_SB_GQUOTINO, flags); | |
113a5683 CS |
1452 | if (error) |
1453 | goto error_rele; | |
1da177e4 LT |
1454 | } |
1455 | ||
8a7b8a89 CH |
1456 | mp->m_quotainfo->qi_uquotaip = uip; |
1457 | mp->m_quotainfo->qi_gquotaip = gip; | |
1da177e4 | 1458 | |
014c2544 | 1459 | return 0; |
113a5683 CS |
1460 | |
1461 | error_rele: | |
1462 | if (uip) | |
1463 | IRELE(uip); | |
1464 | if (gip) | |
1465 | IRELE(gip); | |
1466 | return XFS_ERROR(error); | |
1da177e4 LT |
1467 | } |
1468 | ||
92b2e5b3 CH |
1469 | STATIC void |
1470 | xfs_qm_dqfree_one( | |
1471 | struct xfs_dquot *dqp) | |
1472 | { | |
1473 | struct xfs_mount *mp = dqp->q_mount; | |
1474 | struct xfs_quotainfo *qi = mp->m_quotainfo; | |
1da177e4 | 1475 | |
9f920f11 | 1476 | mutex_lock(&qi->qi_tree_lock); |
329e0875 | 1477 | radix_tree_delete(xfs_dquot_tree(qi, dqp->q_core.d_flags), |
9f920f11 | 1478 | be32_to_cpu(dqp->q_core.d_id)); |
368e1361 | 1479 | |
92b2e5b3 | 1480 | qi->qi_dquots--; |
b84a3a96 | 1481 | mutex_unlock(&qi->qi_tree_lock); |
92b2e5b3 CH |
1482 | |
1483 | xfs_qm_dqdestroy(dqp); | |
1484 | } | |
1485 | ||
1486 | STATIC void | |
1487 | xfs_qm_dqreclaim_one( | |
1488 | struct xfs_dquot *dqp, | |
43ff2122 | 1489 | struct list_head *buffer_list, |
92b2e5b3 | 1490 | struct list_head *dispose_list) |
1da177e4 | 1491 | { |
92b2e5b3 | 1492 | struct xfs_mount *mp = dqp->q_mount; |
f8739c3c | 1493 | struct xfs_quotainfo *qi = mp->m_quotainfo; |
92b2e5b3 | 1494 | int error; |
1da177e4 | 1495 | |
92b2e5b3 | 1496 | if (!xfs_dqlock_nowait(dqp)) |
b870553c | 1497 | goto out_move_tail; |
bf72de31 | 1498 | |
92b2e5b3 CH |
1499 | /* |
1500 | * This dquot has acquired a reference in the meantime remove it from | |
1501 | * the freelist and try again. | |
1502 | */ | |
1503 | if (dqp->q_nrefs) { | |
1504 | xfs_dqunlock(dqp); | |
1da177e4 | 1505 | |
92b2e5b3 | 1506 | trace_xfs_dqreclaim_want(dqp); |
48776fd2 | 1507 | XFS_STATS_INC(xs_qm_dqwants); |
1da177e4 | 1508 | |
f8739c3c CH |
1509 | list_del_init(&dqp->q_lru); |
1510 | qi->qi_lru_count--; | |
48776fd2 | 1511 | XFS_STATS_DEC(xs_qm_dquot_unused); |
92b2e5b3 CH |
1512 | return; |
1513 | } | |
368e1361 | 1514 | |
92b2e5b3 CH |
1515 | /* |
1516 | * Try to grab the flush lock. If this dquot is in the process of | |
1517 | * getting flushed to disk, we don't want to reclaim it. | |
1518 | */ | |
1519 | if (!xfs_dqflock_nowait(dqp)) | |
b870553c | 1520 | goto out_unlock_move_tail; |
0b1b213f | 1521 | |
92b2e5b3 | 1522 | if (XFS_DQ_IS_DIRTY(dqp)) { |
fe7257fd CH |
1523 | struct xfs_buf *bp = NULL; |
1524 | ||
92b2e5b3 | 1525 | trace_xfs_dqreclaim_dirty(dqp); |
0b1b213f | 1526 | |
fe7257fd | 1527 | error = xfs_qm_dqflush(dqp, &bp); |
92b2e5b3 CH |
1528 | if (error) { |
1529 | xfs_warn(mp, "%s: dquot %p flush failed", | |
1530 | __func__, dqp); | |
b870553c | 1531 | goto out_unlock_move_tail; |
1da177e4 | 1532 | } |
368e1361 | 1533 | |
43ff2122 | 1534 | xfs_buf_delwri_queue(bp, buffer_list); |
fe7257fd | 1535 | xfs_buf_relse(bp); |
1da177e4 | 1536 | /* |
92b2e5b3 CH |
1537 | * Give the dquot another try on the freelist, as the |
1538 | * flushing will take some time. | |
1da177e4 | 1539 | */ |
b870553c | 1540 | goto out_unlock_move_tail; |
92b2e5b3 CH |
1541 | } |
1542 | xfs_dqfunlock(dqp); | |
92678554 | 1543 | |
92b2e5b3 CH |
1544 | /* |
1545 | * Prevent lookups now that we are past the point of no return. | |
1546 | */ | |
1547 | dqp->dq_flags |= XFS_DQ_FREEING; | |
1548 | xfs_dqunlock(dqp); | |
92678554 | 1549 | |
92b2e5b3 | 1550 | ASSERT(dqp->q_nrefs == 0); |
f8739c3c CH |
1551 | list_move_tail(&dqp->q_lru, dispose_list); |
1552 | qi->qi_lru_count--; | |
48776fd2 | 1553 | XFS_STATS_DEC(xs_qm_dquot_unused); |
92678554 | 1554 | |
92b2e5b3 | 1555 | trace_xfs_dqreclaim_done(dqp); |
48776fd2 | 1556 | XFS_STATS_INC(xs_qm_dqreclaims); |
92b2e5b3 | 1557 | return; |
1da177e4 | 1558 | |
92b2e5b3 CH |
1559 | /* |
1560 | * Move the dquot to the tail of the list so that we don't spin on it. | |
1561 | */ | |
b870553c DC |
1562 | out_unlock_move_tail: |
1563 | xfs_dqunlock(dqp); | |
1564 | out_move_tail: | |
f8739c3c | 1565 | list_move_tail(&dqp->q_lru, &qi->qi_lru_list); |
92b2e5b3 | 1566 | trace_xfs_dqreclaim_busy(dqp); |
48776fd2 | 1567 | XFS_STATS_INC(xs_qm_dqreclaim_misses); |
368e1361 | 1568 | } |
1da177e4 | 1569 | |
1da177e4 | 1570 | STATIC int |
7f8275d0 | 1571 | xfs_qm_shake( |
92b2e5b3 CH |
1572 | struct shrinker *shrink, |
1573 | struct shrink_control *sc) | |
1da177e4 | 1574 | { |
f8739c3c CH |
1575 | struct xfs_quotainfo *qi = |
1576 | container_of(shrink, struct xfs_quotainfo, qi_shrinker); | |
92b2e5b3 | 1577 | int nr_to_scan = sc->nr_to_scan; |
43ff2122 | 1578 | LIST_HEAD (buffer_list); |
92b2e5b3 CH |
1579 | LIST_HEAD (dispose_list); |
1580 | struct xfs_dquot *dqp; | |
43ff2122 | 1581 | int error; |
1da177e4 | 1582 | |
92b2e5b3 | 1583 | if ((sc->gfp_mask & (__GFP_FS|__GFP_WAIT)) != (__GFP_FS|__GFP_WAIT)) |
014c2544 | 1584 | return 0; |
92b2e5b3 CH |
1585 | if (!nr_to_scan) |
1586 | goto out; | |
1da177e4 | 1587 | |
f8739c3c CH |
1588 | mutex_lock(&qi->qi_lru_lock); |
1589 | while (!list_empty(&qi->qi_lru_list)) { | |
92b2e5b3 CH |
1590 | if (nr_to_scan-- <= 0) |
1591 | break; | |
f8739c3c CH |
1592 | dqp = list_first_entry(&qi->qi_lru_list, struct xfs_dquot, |
1593 | q_lru); | |
43ff2122 | 1594 | xfs_qm_dqreclaim_one(dqp, &buffer_list, &dispose_list); |
1da177e4 | 1595 | } |
f8739c3c | 1596 | mutex_unlock(&qi->qi_lru_lock); |
1da177e4 | 1597 | |
43ff2122 CH |
1598 | error = xfs_buf_delwri_submit(&buffer_list); |
1599 | if (error) | |
1600 | xfs_warn(NULL, "%s: dquot reclaim failed", __func__); | |
1601 | ||
92b2e5b3 | 1602 | while (!list_empty(&dispose_list)) { |
f8739c3c CH |
1603 | dqp = list_first_entry(&dispose_list, struct xfs_dquot, q_lru); |
1604 | list_del_init(&dqp->q_lru); | |
92b2e5b3 CH |
1605 | xfs_qm_dqfree_one(dqp); |
1606 | } | |
43ff2122 | 1607 | |
92b2e5b3 | 1608 | out: |
f8739c3c | 1609 | return (qi->qi_lru_count / 100) * sysctl_vfs_cache_pressure; |
1da177e4 LT |
1610 | } |
1611 | ||
1da177e4 LT |
1612 | /* |
1613 | * Start a transaction and write the incore superblock changes to | |
1614 | * disk. flags parameter indicates which fields have changed. | |
1615 | */ | |
1616 | int | |
1617 | xfs_qm_write_sb_changes( | |
1618 | xfs_mount_t *mp, | |
1619 | __int64_t flags) | |
1620 | { | |
1621 | xfs_trans_t *tp; | |
1622 | int error; | |
1623 | ||
1da177e4 | 1624 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); |
f910a8c6 JL |
1625 | error = xfs_trans_reserve(tp, 0, XFS_QM_SBCHANGE_LOG_RES(mp), |
1626 | 0, 0, XFS_DEFAULT_LOG_COUNT); | |
1627 | if (error) { | |
1da177e4 | 1628 | xfs_trans_cancel(tp, 0); |
014c2544 | 1629 | return error; |
1da177e4 LT |
1630 | } |
1631 | ||
1632 | xfs_mod_sb(tp, flags); | |
e5720eec | 1633 | error = xfs_trans_commit(tp, 0); |
1da177e4 | 1634 | |
e5720eec | 1635 | return error; |
1da177e4 LT |
1636 | } |
1637 | ||
1638 | ||
1639 | /* --------------- utility functions for vnodeops ---------------- */ | |
1640 | ||
1641 | ||
1642 | /* | |
6c77b0ea | 1643 | * Given an inode, a uid, gid and prid make sure that we have |
1da177e4 LT |
1644 | * allocated relevant dquot(s) on disk, and that we won't exceed inode |
1645 | * quotas by creating this file. | |
1646 | * This also attaches dquot(s) to the given inode after locking it, | |
1647 | * and returns the dquots corresponding to the uid and/or gid. | |
1648 | * | |
1649 | * in : inode (unlocked) | |
1650 | * out : udquot, gdquot with references taken and unlocked | |
1651 | */ | |
1652 | int | |
1653 | xfs_qm_vop_dqalloc( | |
7d095257 CH |
1654 | struct xfs_inode *ip, |
1655 | uid_t uid, | |
1656 | gid_t gid, | |
1657 | prid_t prid, | |
1658 | uint flags, | |
1659 | struct xfs_dquot **O_udqpp, | |
1660 | struct xfs_dquot **O_gdqpp) | |
1da177e4 | 1661 | { |
7d095257 | 1662 | struct xfs_mount *mp = ip->i_mount; |
113a5683 CS |
1663 | struct xfs_dquot *uq = NULL; |
1664 | struct xfs_dquot *gq = NULL; | |
7d095257 CH |
1665 | int error; |
1666 | uint lockflags; | |
1da177e4 | 1667 | |
7d095257 | 1668 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
1da177e4 LT |
1669 | return 0; |
1670 | ||
1671 | lockflags = XFS_ILOCK_EXCL; | |
1672 | xfs_ilock(ip, lockflags); | |
1673 | ||
bd186aa9 | 1674 | if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) |
1da177e4 LT |
1675 | gid = ip->i_d.di_gid; |
1676 | ||
1677 | /* | |
1678 | * Attach the dquot(s) to this inode, doing a dquot allocation | |
1679 | * if necessary. The dquot(s) will not be locked. | |
1680 | */ | |
1681 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
7d095257 CH |
1682 | error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); |
1683 | if (error) { | |
1da177e4 | 1684 | xfs_iunlock(ip, lockflags); |
014c2544 | 1685 | return error; |
1da177e4 LT |
1686 | } |
1687 | } | |
1688 | ||
c8ad20ff | 1689 | if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { |
1da177e4 LT |
1690 | if (ip->i_d.di_uid != uid) { |
1691 | /* | |
1692 | * What we need is the dquot that has this uid, and | |
1693 | * if we send the inode to dqget, the uid of the inode | |
1694 | * takes priority over what's sent in the uid argument. | |
1695 | * We must unlock inode here before calling dqget if | |
1696 | * we're not sending the inode, because otherwise | |
1697 | * we'll deadlock by doing trans_reserve while | |
1698 | * holding ilock. | |
1699 | */ | |
1700 | xfs_iunlock(ip, lockflags); | |
113a5683 | 1701 | error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t) uid, |
1da177e4 LT |
1702 | XFS_DQ_USER, |
1703 | XFS_QMOPT_DQALLOC | | |
1704 | XFS_QMOPT_DOWARN, | |
113a5683 CS |
1705 | &uq); |
1706 | if (error) { | |
1da177e4 | 1707 | ASSERT(error != ENOENT); |
014c2544 | 1708 | return error; |
1da177e4 LT |
1709 | } |
1710 | /* | |
1711 | * Get the ilock in the right order. | |
1712 | */ | |
1713 | xfs_dqunlock(uq); | |
1714 | lockflags = XFS_ILOCK_SHARED; | |
1715 | xfs_ilock(ip, lockflags); | |
1716 | } else { | |
1717 | /* | |
1718 | * Take an extra reference, because we'll return | |
1719 | * this to caller | |
1720 | */ | |
1721 | ASSERT(ip->i_udquot); | |
78e55892 | 1722 | uq = xfs_qm_dqhold(ip->i_udquot); |
1da177e4 LT |
1723 | } |
1724 | } | |
c8ad20ff | 1725 | if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { |
1da177e4 LT |
1726 | if (ip->i_d.di_gid != gid) { |
1727 | xfs_iunlock(ip, lockflags); | |
113a5683 | 1728 | error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)gid, |
1da177e4 LT |
1729 | XFS_DQ_GROUP, |
1730 | XFS_QMOPT_DQALLOC | | |
1731 | XFS_QMOPT_DOWARN, | |
113a5683 CS |
1732 | &gq); |
1733 | if (error) { | |
1da177e4 | 1734 | ASSERT(error != ENOENT); |
113a5683 | 1735 | goto error_rele; |
1da177e4 LT |
1736 | } |
1737 | xfs_dqunlock(gq); | |
1738 | lockflags = XFS_ILOCK_SHARED; | |
1739 | xfs_ilock(ip, lockflags); | |
1740 | } else { | |
1741 | ASSERT(ip->i_gdquot); | |
78e55892 | 1742 | gq = xfs_qm_dqhold(ip->i_gdquot); |
1da177e4 | 1743 | } |
c8ad20ff | 1744 | } else if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 1745 | if (xfs_get_projid(ip) != prid) { |
c8ad20ff | 1746 | xfs_iunlock(ip, lockflags); |
113a5683 | 1747 | error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, |
c8ad20ff NS |
1748 | XFS_DQ_PROJ, |
1749 | XFS_QMOPT_DQALLOC | | |
1750 | XFS_QMOPT_DOWARN, | |
113a5683 CS |
1751 | &gq); |
1752 | if (error) { | |
c8ad20ff | 1753 | ASSERT(error != ENOENT); |
113a5683 | 1754 | goto error_rele; |
c8ad20ff NS |
1755 | } |
1756 | xfs_dqunlock(gq); | |
1757 | lockflags = XFS_ILOCK_SHARED; | |
1758 | xfs_ilock(ip, lockflags); | |
1759 | } else { | |
1760 | ASSERT(ip->i_gdquot); | |
78e55892 | 1761 | gq = xfs_qm_dqhold(ip->i_gdquot); |
c8ad20ff | 1762 | } |
1da177e4 LT |
1763 | } |
1764 | if (uq) | |
0b1b213f | 1765 | trace_xfs_dquot_dqalloc(ip); |
1da177e4 LT |
1766 | |
1767 | xfs_iunlock(ip, lockflags); | |
1768 | if (O_udqpp) | |
1769 | *O_udqpp = uq; | |
1770 | else if (uq) | |
1771 | xfs_qm_dqrele(uq); | |
1772 | if (O_gdqpp) | |
1773 | *O_gdqpp = gq; | |
1774 | else if (gq) | |
1775 | xfs_qm_dqrele(gq); | |
014c2544 | 1776 | return 0; |
113a5683 CS |
1777 | |
1778 | error_rele: | |
1779 | if (uq) | |
1780 | xfs_qm_dqrele(uq); | |
1781 | return error; | |
1da177e4 LT |
1782 | } |
1783 | ||
1784 | /* | |
1785 | * Actually transfer ownership, and do dquot modifications. | |
1786 | * These were already reserved. | |
1787 | */ | |
1788 | xfs_dquot_t * | |
1789 | xfs_qm_vop_chown( | |
1790 | xfs_trans_t *tp, | |
1791 | xfs_inode_t *ip, | |
1792 | xfs_dquot_t **IO_olddq, | |
1793 | xfs_dquot_t *newdq) | |
1794 | { | |
1795 | xfs_dquot_t *prevdq; | |
06d10dd9 NS |
1796 | uint bfield = XFS_IS_REALTIME_INODE(ip) ? |
1797 | XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; | |
1798 | ||
7d095257 | 1799 | |
579aa9ca | 1800 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
1801 | ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); |
1802 | ||
1803 | /* old dquot */ | |
1804 | prevdq = *IO_olddq; | |
1805 | ASSERT(prevdq); | |
1806 | ASSERT(prevdq != newdq); | |
1807 | ||
06d10dd9 NS |
1808 | xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); |
1809 | xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); | |
1da177e4 LT |
1810 | |
1811 | /* the sparkling new dquot */ | |
06d10dd9 NS |
1812 | xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); |
1813 | xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); | |
1da177e4 LT |
1814 | |
1815 | /* | |
78e55892 CH |
1816 | * Take an extra reference, because the inode is going to keep |
1817 | * this dquot pointer even after the trans_commit. | |
1da177e4 | 1818 | */ |
78e55892 | 1819 | *IO_olddq = xfs_qm_dqhold(newdq); |
1da177e4 | 1820 | |
014c2544 | 1821 | return prevdq; |
1da177e4 LT |
1822 | } |
1823 | ||
1824 | /* | |
c8ad20ff | 1825 | * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). |
1da177e4 LT |
1826 | */ |
1827 | int | |
1828 | xfs_qm_vop_chown_reserve( | |
113a5683 CS |
1829 | struct xfs_trans *tp, |
1830 | struct xfs_inode *ip, | |
1831 | struct xfs_dquot *udqp, | |
1832 | struct xfs_dquot *gdqp, | |
1833 | uint flags) | |
1da177e4 | 1834 | { |
113a5683 CS |
1835 | struct xfs_mount *mp = ip->i_mount; |
1836 | uint delblks, blkflags, prjflags = 0; | |
1837 | struct xfs_dquot *udq_unres = NULL; | |
1838 | struct xfs_dquot *gdq_unres = NULL; | |
1839 | struct xfs_dquot *udq_delblks = NULL; | |
1840 | struct xfs_dquot *gdq_delblks = NULL; | |
1841 | int error; | |
7d095257 | 1842 | |
1da177e4 | 1843 | |
579aa9ca | 1844 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); |
1da177e4 LT |
1845 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1846 | ||
1847 | delblks = ip->i_delayed_blks; | |
06d10dd9 NS |
1848 | blkflags = XFS_IS_REALTIME_INODE(ip) ? |
1849 | XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; | |
1da177e4 LT |
1850 | |
1851 | if (XFS_IS_UQUOTA_ON(mp) && udqp && | |
1149d96a | 1852 | ip->i_d.di_uid != (uid_t)be32_to_cpu(udqp->q_core.d_id)) { |
113a5683 | 1853 | udq_delblks = udqp; |
1da177e4 LT |
1854 | /* |
1855 | * If there are delayed allocation blocks, then we have to | |
1856 | * unreserve those from the old dquot, and add them to the | |
1857 | * new dquot. | |
1858 | */ | |
1859 | if (delblks) { | |
1860 | ASSERT(ip->i_udquot); | |
113a5683 | 1861 | udq_unres = ip->i_udquot; |
1da177e4 LT |
1862 | } |
1863 | } | |
c8ad20ff | 1864 | if (XFS_IS_OQUOTA_ON(ip->i_mount) && gdqp) { |
9a2a7de2 | 1865 | if (XFS_IS_PQUOTA_ON(ip->i_mount) && |
6743099c | 1866 | xfs_get_projid(ip) != be32_to_cpu(gdqp->q_core.d_id)) |
9a2a7de2 NS |
1867 | prjflags = XFS_QMOPT_ENOSPC; |
1868 | ||
1869 | if (prjflags || | |
1870 | (XFS_IS_GQUOTA_ON(ip->i_mount) && | |
1871 | ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id))) { | |
113a5683 | 1872 | gdq_delblks = gdqp; |
c8ad20ff NS |
1873 | if (delblks) { |
1874 | ASSERT(ip->i_gdquot); | |
113a5683 | 1875 | gdq_unres = ip->i_gdquot; |
c8ad20ff | 1876 | } |
1da177e4 LT |
1877 | } |
1878 | } | |
1879 | ||
113a5683 CS |
1880 | error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, |
1881 | udq_delblks, gdq_delblks, ip->i_d.di_nblocks, 1, | |
1882 | flags | blkflags | prjflags); | |
1883 | if (error) | |
1884 | return error; | |
1da177e4 LT |
1885 | |
1886 | /* | |
1887 | * Do the delayed blks reservations/unreservations now. Since, these | |
1888 | * are done without the help of a transaction, if a reservation fails | |
1889 | * its previous reservations won't be automatically undone by trans | |
1890 | * code. So, we have to do it manually here. | |
1891 | */ | |
1892 | if (delblks) { | |
1893 | /* | |
1894 | * Do the reservations first. Unreservation can't fail. | |
1895 | */ | |
113a5683 CS |
1896 | ASSERT(udq_delblks || gdq_delblks); |
1897 | ASSERT(udq_unres || gdq_unres); | |
1898 | error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
1899 | udq_delblks, gdq_delblks, (xfs_qcnt_t)delblks, 0, | |
1900 | flags | blkflags | prjflags); | |
1901 | if (error) | |
1902 | return error; | |
1da177e4 | 1903 | xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, |
113a5683 | 1904 | udq_unres, gdq_unres, -((xfs_qcnt_t)delblks), 0, |
06d10dd9 | 1905 | blkflags); |
1da177e4 LT |
1906 | } |
1907 | ||
1908 | return (0); | |
1909 | } | |
1910 | ||
1911 | int | |
1912 | xfs_qm_vop_rename_dqattach( | |
7d095257 | 1913 | struct xfs_inode **i_tab) |
1da177e4 | 1914 | { |
7d095257 CH |
1915 | struct xfs_mount *mp = i_tab[0]->i_mount; |
1916 | int i; | |
1da177e4 | 1917 | |
7d095257 | 1918 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
014c2544 | 1919 | return 0; |
1da177e4 | 1920 | |
7d095257 CH |
1921 | for (i = 0; (i < 4 && i_tab[i]); i++) { |
1922 | struct xfs_inode *ip = i_tab[i]; | |
1923 | int error; | |
1924 | ||
1da177e4 LT |
1925 | /* |
1926 | * Watch out for duplicate entries in the table. | |
1927 | */ | |
7d095257 CH |
1928 | if (i == 0 || ip != i_tab[i-1]) { |
1929 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
1da177e4 LT |
1930 | error = xfs_qm_dqattach(ip, 0); |
1931 | if (error) | |
014c2544 | 1932 | return error; |
1da177e4 LT |
1933 | } |
1934 | } | |
1935 | } | |
014c2544 | 1936 | return 0; |
1da177e4 LT |
1937 | } |
1938 | ||
1939 | void | |
7d095257 CH |
1940 | xfs_qm_vop_create_dqattach( |
1941 | struct xfs_trans *tp, | |
1942 | struct xfs_inode *ip, | |
1943 | struct xfs_dquot *udqp, | |
1944 | struct xfs_dquot *gdqp) | |
1da177e4 | 1945 | { |
7d095257 CH |
1946 | struct xfs_mount *mp = tp->t_mountp; |
1947 | ||
1948 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) | |
1da177e4 LT |
1949 | return; |
1950 | ||
579aa9ca | 1951 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
7d095257 | 1952 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1da177e4 LT |
1953 | |
1954 | if (udqp) { | |
1da177e4 | 1955 | ASSERT(ip->i_udquot == NULL); |
7d095257 | 1956 | ASSERT(XFS_IS_UQUOTA_ON(mp)); |
1149d96a | 1957 | ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); |
78e55892 CH |
1958 | |
1959 | ip->i_udquot = xfs_qm_dqhold(udqp); | |
1da177e4 LT |
1960 | xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); |
1961 | } | |
1962 | if (gdqp) { | |
1da177e4 | 1963 | ASSERT(ip->i_gdquot == NULL); |
7d095257 CH |
1964 | ASSERT(XFS_IS_OQUOTA_ON(mp)); |
1965 | ASSERT((XFS_IS_GQUOTA_ON(mp) ? | |
6743099c | 1966 | ip->i_d.di_gid : xfs_get_projid(ip)) == |
ee2a4f7c | 1967 | be32_to_cpu(gdqp->q_core.d_id)); |
78e55892 CH |
1968 | |
1969 | ip->i_gdquot = xfs_qm_dqhold(gdqp); | |
1da177e4 LT |
1970 | xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); |
1971 | } | |
1972 | } | |
1973 |