Commit | Line | Data |
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0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
4ce3121f NS |
3 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
4 | * All Rights Reserved. | |
1da177e4 | 5 | */ |
1da177e4 LT |
6 | #include "xfs.h" |
7 | #include "xfs_fs.h" | |
a4fbe6ab | 8 | #include "xfs_shared.h" |
6ca1c906 | 9 | #include "xfs_format.h" |
239880ef | 10 | #include "xfs_log_format.h" |
239880ef | 11 | #include "xfs_trans_resv.h" |
a844f451 | 12 | #include "xfs_bit.h" |
1da177e4 | 13 | #include "xfs_sb.h" |
1da177e4 | 14 | #include "xfs_mount.h" |
1da177e4 | 15 | #include "xfs_inode.h" |
ebd126a6 | 16 | #include "xfs_iwalk.h" |
239880ef | 17 | #include "xfs_quota.h" |
a844f451 | 18 | #include "xfs_bmap.h" |
8bfadd8d | 19 | #include "xfs_bmap_util.h" |
239880ef | 20 | #include "xfs_trans.h" |
1da177e4 | 21 | #include "xfs_trans_space.h" |
1da177e4 | 22 | #include "xfs_qm.h" |
0b1b213f | 23 | #include "xfs_trace.h" |
33479e05 | 24 | #include "xfs_icache.h" |
a5155b87 | 25 | #include "xfs_error.h" |
9bbafc71 | 26 | #include "xfs_ag.h" |
b652afd9 | 27 | #include "xfs_ialloc.h" |
01728b44 | 28 | #include "xfs_log_priv.h" |
1da177e4 LT |
29 | |
30 | /* | |
31 | * The global quota manager. There is only one of these for the entire | |
32 | * system, _not_ one per file system. XQM keeps track of the overall | |
33 | * quota functionality, including maintaining the freelist and hash | |
34 | * tables of dquots. | |
35 | */ | |
c072fbef PR |
36 | STATIC int xfs_qm_init_quotainos(struct xfs_mount *mp); |
37 | STATIC int xfs_qm_init_quotainfo(struct xfs_mount *mp); | |
1da177e4 | 38 | |
c072fbef | 39 | STATIC void xfs_qm_destroy_quotainos(struct xfs_quotainfo *qi); |
cd56a39a | 40 | STATIC void xfs_qm_dqfree_one(struct xfs_dquot *dqp); |
b84a3a96 CH |
41 | /* |
42 | * We use the batch lookup interface to iterate over the dquots as it | |
43 | * currently is the only interface into the radix tree code that allows | |
44 | * fuzzy lookups instead of exact matches. Holding the lock over multiple | |
45 | * operations is fine as all callers are used either during mount/umount | |
46 | * or quotaoff. | |
47 | */ | |
48 | #define XFS_DQ_LOOKUP_BATCH 32 | |
49 | ||
50 | STATIC int | |
51 | xfs_qm_dquot_walk( | |
52 | struct xfs_mount *mp, | |
1a7ed271 | 53 | xfs_dqtype_t type, |
43ff2122 CH |
54 | int (*execute)(struct xfs_dquot *dqp, void *data), |
55 | void *data) | |
b84a3a96 CH |
56 | { |
57 | struct xfs_quotainfo *qi = mp->m_quotainfo; | |
329e0875 | 58 | struct radix_tree_root *tree = xfs_dquot_tree(qi, type); |
b84a3a96 CH |
59 | uint32_t next_index; |
60 | int last_error = 0; | |
61 | int skipped; | |
62 | int nr_found; | |
63 | ||
64 | restart: | |
65 | skipped = 0; | |
66 | next_index = 0; | |
67 | nr_found = 0; | |
68 | ||
69 | while (1) { | |
70 | struct xfs_dquot *batch[XFS_DQ_LOOKUP_BATCH]; | |
e195605e | 71 | int error; |
b84a3a96 CH |
72 | int i; |
73 | ||
74 | mutex_lock(&qi->qi_tree_lock); | |
75 | nr_found = radix_tree_gang_lookup(tree, (void **)batch, | |
76 | next_index, XFS_DQ_LOOKUP_BATCH); | |
77 | if (!nr_found) { | |
78 | mutex_unlock(&qi->qi_tree_lock); | |
79 | break; | |
80 | } | |
81 | ||
82 | for (i = 0; i < nr_found; i++) { | |
83 | struct xfs_dquot *dqp = batch[i]; | |
84 | ||
c51df733 | 85 | next_index = dqp->q_id + 1; |
b84a3a96 | 86 | |
43ff2122 | 87 | error = execute(batch[i], data); |
2451337d | 88 | if (error == -EAGAIN) { |
b84a3a96 CH |
89 | skipped++; |
90 | continue; | |
91 | } | |
2451337d | 92 | if (error && last_error != -EFSCORRUPTED) |
b84a3a96 CH |
93 | last_error = error; |
94 | } | |
95 | ||
96 | mutex_unlock(&qi->qi_tree_lock); | |
97 | ||
98 | /* bail out if the filesystem is corrupted. */ | |
2451337d | 99 | if (last_error == -EFSCORRUPTED) { |
b84a3a96 CH |
100 | skipped = 0; |
101 | break; | |
102 | } | |
cfaf2d03 BF |
103 | /* we're done if id overflows back to zero */ |
104 | if (!next_index) | |
105 | break; | |
b84a3a96 CH |
106 | } |
107 | ||
108 | if (skipped) { | |
109 | delay(1); | |
110 | goto restart; | |
111 | } | |
112 | ||
113 | return last_error; | |
114 | } | |
115 | ||
116 | ||
117 | /* | |
118 | * Purge a dquot from all tracking data structures and free it. | |
119 | */ | |
120 | STATIC int | |
121 | xfs_qm_dqpurge( | |
43ff2122 CH |
122 | struct xfs_dquot *dqp, |
123 | void *data) | |
b84a3a96 | 124 | { |
01728b44 | 125 | struct xfs_quotainfo *qi = dqp->q_mount->m_quotainfo; |
8d3d7e2b | 126 | int error = -EAGAIN; |
b84a3a96 CH |
127 | |
128 | xfs_dqlock(dqp); | |
985a78fd | 129 | if ((dqp->q_flags & XFS_DQFLAG_FREEING) || dqp->q_nrefs != 0) |
8d3d7e2b | 130 | goto out_unlock; |
b84a3a96 | 131 | |
985a78fd | 132 | dqp->q_flags |= XFS_DQFLAG_FREEING; |
b84a3a96 | 133 | |
43ff2122 | 134 | xfs_dqflock(dqp); |
b84a3a96 CH |
135 | |
136 | /* | |
137 | * If we are turning this type of quotas off, we don't care | |
138 | * about the dirty metadata sitting in this dquot. OTOH, if | |
139 | * we're unmounting, we do care, so we flush it and wait. | |
140 | */ | |
141 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
fe7257fd | 142 | struct xfs_buf *bp = NULL; |
b84a3a96 CH |
143 | |
144 | /* | |
145 | * We don't care about getting disk errors here. We need | |
146 | * to purge this dquot anyway, so we go ahead regardless. | |
147 | */ | |
fe7257fd | 148 | error = xfs_qm_dqflush(dqp, &bp); |
609001bc | 149 | if (!error) { |
fe7257fd CH |
150 | error = xfs_bwrite(bp); |
151 | xfs_buf_relse(bp); | |
8d3d7e2b | 152 | } else if (error == -EAGAIN) { |
985a78fd | 153 | dqp->q_flags &= ~XFS_DQFLAG_FREEING; |
8d3d7e2b | 154 | goto out_unlock; |
fe7257fd | 155 | } |
b84a3a96 CH |
156 | xfs_dqflock(dqp); |
157 | } | |
158 | ||
159 | ASSERT(atomic_read(&dqp->q_pincount) == 0); | |
01728b44 | 160 | ASSERT(xlog_is_shutdown(dqp->q_logitem.qli_item.li_log) || |
22525c17 | 161 | !test_bit(XFS_LI_IN_AIL, &dqp->q_logitem.qli_item.li_flags)); |
b84a3a96 CH |
162 | |
163 | xfs_dqfunlock(dqp); | |
164 | xfs_dqunlock(dqp); | |
165 | ||
51dbb1be | 166 | radix_tree_delete(xfs_dquot_tree(qi, xfs_dquot_type(dqp)), dqp->q_id); |
b84a3a96 CH |
167 | qi->qi_dquots--; |
168 | ||
169 | /* | |
170 | * We move dquots to the freelist as soon as their reference count | |
171 | * hits zero, so it really should be on the freelist here. | |
172 | */ | |
b84a3a96 | 173 | ASSERT(!list_empty(&dqp->q_lru)); |
cd56a39a | 174 | list_lru_del(&qi->qi_lru, &dqp->q_lru); |
01728b44 | 175 | XFS_STATS_DEC(dqp->q_mount, xs_qm_dquot_unused); |
b84a3a96 CH |
176 | |
177 | xfs_qm_dqdestroy(dqp); | |
df8052e7 | 178 | return 0; |
8d3d7e2b BF |
179 | |
180 | out_unlock: | |
181 | xfs_dqunlock(dqp); | |
182 | return error; | |
df8052e7 JL |
183 | } |
184 | ||
b84a3a96 CH |
185 | /* |
186 | * Purge the dquot cache. | |
187 | */ | |
40b52225 | 188 | static void |
b84a3a96 | 189 | xfs_qm_dqpurge_all( |
e497dfba | 190 | struct xfs_mount *mp) |
b84a3a96 | 191 | { |
e497dfba CH |
192 | xfs_qm_dquot_walk(mp, XFS_DQTYPE_USER, xfs_qm_dqpurge, NULL); |
193 | xfs_qm_dquot_walk(mp, XFS_DQTYPE_GROUP, xfs_qm_dqpurge, NULL); | |
194 | xfs_qm_dquot_walk(mp, XFS_DQTYPE_PROJ, xfs_qm_dqpurge, NULL); | |
b84a3a96 CH |
195 | } |
196 | ||
1da177e4 LT |
197 | /* |
198 | * Just destroy the quotainfo structure. | |
199 | */ | |
200 | void | |
7d095257 CH |
201 | xfs_qm_unmount( |
202 | struct xfs_mount *mp) | |
1da177e4 | 203 | { |
7d095257 | 204 | if (mp->m_quotainfo) { |
e497dfba | 205 | xfs_qm_dqpurge_all(mp); |
1da177e4 | 206 | xfs_qm_destroy_quotainfo(mp); |
7d095257 | 207 | } |
1da177e4 LT |
208 | } |
209 | ||
1da177e4 LT |
210 | /* |
211 | * Called from the vfsops layer. | |
212 | */ | |
e57481dc | 213 | void |
1da177e4 LT |
214 | xfs_qm_unmount_quotas( |
215 | xfs_mount_t *mp) | |
216 | { | |
1da177e4 LT |
217 | /* |
218 | * Release the dquots that root inode, et al might be holding, | |
219 | * before we flush quotas and blow away the quotainfo structure. | |
220 | */ | |
221 | ASSERT(mp->m_rootip); | |
222 | xfs_qm_dqdetach(mp->m_rootip); | |
223 | if (mp->m_rbmip) | |
224 | xfs_qm_dqdetach(mp->m_rbmip); | |
225 | if (mp->m_rsumip) | |
226 | xfs_qm_dqdetach(mp->m_rsumip); | |
227 | ||
228 | /* | |
e57481dc | 229 | * Release the quota inodes. |
1da177e4 | 230 | */ |
1da177e4 | 231 | if (mp->m_quotainfo) { |
e57481dc | 232 | if (mp->m_quotainfo->qi_uquotaip) { |
44a8736b | 233 | xfs_irele(mp->m_quotainfo->qi_uquotaip); |
e57481dc | 234 | mp->m_quotainfo->qi_uquotaip = NULL; |
1da177e4 | 235 | } |
e57481dc | 236 | if (mp->m_quotainfo->qi_gquotaip) { |
44a8736b | 237 | xfs_irele(mp->m_quotainfo->qi_gquotaip); |
e57481dc | 238 | mp->m_quotainfo->qi_gquotaip = NULL; |
1da177e4 | 239 | } |
92f8ff73 | 240 | if (mp->m_quotainfo->qi_pquotaip) { |
44a8736b | 241 | xfs_irele(mp->m_quotainfo->qi_pquotaip); |
92f8ff73 CS |
242 | mp->m_quotainfo->qi_pquotaip = NULL; |
243 | } | |
1da177e4 | 244 | } |
1da177e4 LT |
245 | } |
246 | ||
1da177e4 LT |
247 | STATIC int |
248 | xfs_qm_dqattach_one( | |
aefe69a4 | 249 | struct xfs_inode *ip, |
1a7ed271 | 250 | xfs_dqtype_t type, |
aefe69a4 PR |
251 | bool doalloc, |
252 | struct xfs_dquot **IO_idqpp) | |
1da177e4 | 253 | { |
aefe69a4 PR |
254 | struct xfs_dquot *dqp; |
255 | int error; | |
1da177e4 | 256 | |
579aa9ca | 257 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 258 | error = 0; |
8e9b6e7f | 259 | |
1da177e4 | 260 | /* |
3c353375 DC |
261 | * See if we already have it in the inode itself. IO_idqpp is &i_udquot |
262 | * or &i_gdquot. This made the code look weird, but made the logic a lot | |
263 | * simpler. | |
1da177e4 | 264 | */ |
8e9b6e7f CH |
265 | dqp = *IO_idqpp; |
266 | if (dqp) { | |
0b1b213f | 267 | trace_xfs_dqattach_found(dqp); |
8e9b6e7f | 268 | return 0; |
1da177e4 LT |
269 | } |
270 | ||
271 | /* | |
3c353375 DC |
272 | * Find the dquot from somewhere. This bumps the reference count of |
273 | * dquot and returns it locked. This can return ENOENT if dquot didn't | |
274 | * exist on disk and we didn't ask it to allocate; ESRCH if quotas got | |
275 | * turned off suddenly. | |
1da177e4 | 276 | */ |
4882c19d | 277 | error = xfs_qm_dqget_inode(ip, type, doalloc, &dqp); |
8e9b6e7f CH |
278 | if (error) |
279 | return error; | |
1da177e4 | 280 | |
0b1b213f | 281 | trace_xfs_dqattach_get(dqp); |
8e9b6e7f | 282 | |
1da177e4 LT |
283 | /* |
284 | * dqget may have dropped and re-acquired the ilock, but it guarantees | |
285 | * that the dquot returned is the one that should go in the inode. | |
286 | */ | |
287 | *IO_idqpp = dqp; | |
8e9b6e7f CH |
288 | xfs_dqunlock(dqp); |
289 | return 0; | |
1da177e4 LT |
290 | } |
291 | ||
b4d05e30 CH |
292 | static bool |
293 | xfs_qm_need_dqattach( | |
294 | struct xfs_inode *ip) | |
295 | { | |
296 | struct xfs_mount *mp = ip->i_mount; | |
297 | ||
b4d05e30 CH |
298 | if (!XFS_IS_QUOTA_ON(mp)) |
299 | return false; | |
300 | if (!XFS_NOT_DQATTACHED(mp, ip)) | |
301 | return false; | |
9cad19d2 | 302 | if (xfs_is_quota_inode(&mp->m_sb, ip->i_ino)) |
b4d05e30 CH |
303 | return false; |
304 | return true; | |
305 | } | |
1da177e4 LT |
306 | |
307 | /* | |
c8ad20ff NS |
308 | * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON |
309 | * into account. | |
30ab2dcf | 310 | * If @doalloc is true, the dquot(s) will be allocated if needed. |
1da177e4 LT |
311 | * Inode may get unlocked and relocked in here, and the caller must deal with |
312 | * the consequences. | |
313 | */ | |
314 | int | |
7d095257 | 315 | xfs_qm_dqattach_locked( |
1da177e4 | 316 | xfs_inode_t *ip, |
4882c19d | 317 | bool doalloc) |
1da177e4 LT |
318 | { |
319 | xfs_mount_t *mp = ip->i_mount; | |
1da177e4 LT |
320 | int error = 0; |
321 | ||
b4d05e30 | 322 | if (!xfs_qm_need_dqattach(ip)) |
014c2544 | 323 | return 0; |
1da177e4 | 324 | |
7d095257 | 325 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 326 | |
3c353375 | 327 | if (XFS_IS_UQUOTA_ON(mp) && !ip->i_udquot) { |
74af4c17 KX |
328 | error = xfs_qm_dqattach_one(ip, XFS_DQTYPE_USER, |
329 | doalloc, &ip->i_udquot); | |
1da177e4 LT |
330 | if (error) |
331 | goto done; | |
3c353375 | 332 | ASSERT(ip->i_udquot); |
1da177e4 | 333 | } |
579aa9ca | 334 | |
3c353375 | 335 | if (XFS_IS_GQUOTA_ON(mp) && !ip->i_gdquot) { |
74af4c17 KX |
336 | error = xfs_qm_dqattach_one(ip, XFS_DQTYPE_GROUP, |
337 | doalloc, &ip->i_gdquot); | |
1da177e4 LT |
338 | if (error) |
339 | goto done; | |
3c353375 | 340 | ASSERT(ip->i_gdquot); |
1da177e4 LT |
341 | } |
342 | ||
3c353375 | 343 | if (XFS_IS_PQUOTA_ON(mp) && !ip->i_pdquot) { |
74af4c17 | 344 | error = xfs_qm_dqattach_one(ip, XFS_DQTYPE_PROJ, |
4882c19d | 345 | doalloc, &ip->i_pdquot); |
92f8ff73 CS |
346 | if (error) |
347 | goto done; | |
3c353375 | 348 | ASSERT(ip->i_pdquot); |
92f8ff73 CS |
349 | } |
350 | ||
3c353375 | 351 | done: |
1da177e4 | 352 | /* |
3c353375 DC |
353 | * Don't worry about the dquots that we may have attached before any |
354 | * error - they'll get detached later if it has not already been done. | |
1da177e4 | 355 | */ |
7d095257 | 356 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
7d095257 CH |
357 | return error; |
358 | } | |
1da177e4 | 359 | |
7d095257 CH |
360 | int |
361 | xfs_qm_dqattach( | |
c14cfcca | 362 | struct xfs_inode *ip) |
7d095257 CH |
363 | { |
364 | int error; | |
365 | ||
b4d05e30 CH |
366 | if (!xfs_qm_need_dqattach(ip)) |
367 | return 0; | |
368 | ||
7d095257 | 369 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
4882c19d | 370 | error = xfs_qm_dqattach_locked(ip, false); |
7d095257 | 371 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
1da177e4 | 372 | |
014c2544 | 373 | return error; |
1da177e4 LT |
374 | } |
375 | ||
376 | /* | |
377 | * Release dquots (and their references) if any. | |
378 | * The inode should be locked EXCL except when this's called by | |
379 | * xfs_ireclaim. | |
380 | */ | |
381 | void | |
382 | xfs_qm_dqdetach( | |
383 | xfs_inode_t *ip) | |
384 | { | |
92f8ff73 | 385 | if (!(ip->i_udquot || ip->i_gdquot || ip->i_pdquot)) |
1da177e4 LT |
386 | return; |
387 | ||
0b1b213f CH |
388 | trace_xfs_dquot_dqdetach(ip); |
389 | ||
9cad19d2 | 390 | ASSERT(!xfs_is_quota_inode(&ip->i_mount->m_sb, ip->i_ino)); |
1da177e4 LT |
391 | if (ip->i_udquot) { |
392 | xfs_qm_dqrele(ip->i_udquot); | |
393 | ip->i_udquot = NULL; | |
394 | } | |
395 | if (ip->i_gdquot) { | |
396 | xfs_qm_dqrele(ip->i_gdquot); | |
397 | ip->i_gdquot = NULL; | |
398 | } | |
92f8ff73 CS |
399 | if (ip->i_pdquot) { |
400 | xfs_qm_dqrele(ip->i_pdquot); | |
401 | ip->i_pdquot = NULL; | |
402 | } | |
1da177e4 LT |
403 | } |
404 | ||
cd56a39a DC |
405 | struct xfs_qm_isolate { |
406 | struct list_head buffers; | |
407 | struct list_head dispose; | |
408 | }; | |
409 | ||
410 | static enum lru_status | |
411 | xfs_qm_dquot_isolate( | |
412 | struct list_head *item, | |
3f97b163 | 413 | struct list_lru_one *lru, |
cd56a39a DC |
414 | spinlock_t *lru_lock, |
415 | void *arg) | |
bf1ed383 | 416 | __releases(lru_lock) __acquires(lru_lock) |
cd56a39a DC |
417 | { |
418 | struct xfs_dquot *dqp = container_of(item, | |
419 | struct xfs_dquot, q_lru); | |
420 | struct xfs_qm_isolate *isol = arg; | |
421 | ||
422 | if (!xfs_dqlock_nowait(dqp)) | |
423 | goto out_miss_busy; | |
424 | ||
52f31ed2 DC |
425 | /* |
426 | * If something else is freeing this dquot and hasn't yet removed it | |
427 | * from the LRU, leave it for the freeing task to complete the freeing | |
428 | * process rather than risk it being free from under us here. | |
429 | */ | |
430 | if (dqp->q_flags & XFS_DQFLAG_FREEING) | |
431 | goto out_miss_unlock; | |
432 | ||
cd56a39a DC |
433 | /* |
434 | * This dquot has acquired a reference in the meantime remove it from | |
435 | * the freelist and try again. | |
436 | */ | |
437 | if (dqp->q_nrefs) { | |
438 | xfs_dqunlock(dqp); | |
ff6d6af2 | 439 | XFS_STATS_INC(dqp->q_mount, xs_qm_dqwants); |
cd56a39a DC |
440 | |
441 | trace_xfs_dqreclaim_want(dqp); | |
3f97b163 | 442 | list_lru_isolate(lru, &dqp->q_lru); |
ff6d6af2 | 443 | XFS_STATS_DEC(dqp->q_mount, xs_qm_dquot_unused); |
35163417 | 444 | return LRU_REMOVED; |
cd56a39a DC |
445 | } |
446 | ||
447 | /* | |
448 | * If the dquot is dirty, flush it. If it's already being flushed, just | |
449 | * skip it so there is time for the IO to complete before we try to | |
450 | * reclaim it again on the next LRU pass. | |
451 | */ | |
52f31ed2 DC |
452 | if (!xfs_dqflock_nowait(dqp)) |
453 | goto out_miss_unlock; | |
cd56a39a DC |
454 | |
455 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
456 | struct xfs_buf *bp = NULL; | |
457 | int error; | |
458 | ||
459 | trace_xfs_dqreclaim_dirty(dqp); | |
460 | ||
461 | /* we have to drop the LRU lock to flush the dquot */ | |
462 | spin_unlock(lru_lock); | |
463 | ||
464 | error = xfs_qm_dqflush(dqp, &bp); | |
609001bc | 465 | if (error) |
cd56a39a | 466 | goto out_unlock_dirty; |
cd56a39a DC |
467 | |
468 | xfs_buf_delwri_queue(bp, &isol->buffers); | |
469 | xfs_buf_relse(bp); | |
470 | goto out_unlock_dirty; | |
471 | } | |
472 | xfs_dqfunlock(dqp); | |
473 | ||
474 | /* | |
475 | * Prevent lookups now that we are past the point of no return. | |
476 | */ | |
985a78fd | 477 | dqp->q_flags |= XFS_DQFLAG_FREEING; |
cd56a39a DC |
478 | xfs_dqunlock(dqp); |
479 | ||
480 | ASSERT(dqp->q_nrefs == 0); | |
3f97b163 | 481 | list_lru_isolate_move(lru, &dqp->q_lru, &isol->dispose); |
ff6d6af2 | 482 | XFS_STATS_DEC(dqp->q_mount, xs_qm_dquot_unused); |
cd56a39a | 483 | trace_xfs_dqreclaim_done(dqp); |
ff6d6af2 | 484 | XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaims); |
35163417 | 485 | return LRU_REMOVED; |
cd56a39a | 486 | |
52f31ed2 DC |
487 | out_miss_unlock: |
488 | xfs_dqunlock(dqp); | |
cd56a39a DC |
489 | out_miss_busy: |
490 | trace_xfs_dqreclaim_busy(dqp); | |
ff6d6af2 | 491 | XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaim_misses); |
35163417 | 492 | return LRU_SKIP; |
cd56a39a DC |
493 | |
494 | out_unlock_dirty: | |
495 | trace_xfs_dqreclaim_busy(dqp); | |
ff6d6af2 | 496 | XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaim_misses); |
35163417 DC |
497 | xfs_dqunlock(dqp); |
498 | spin_lock(lru_lock); | |
499 | return LRU_RETRY; | |
cd56a39a DC |
500 | } |
501 | ||
2f5b56f8 | 502 | static unsigned long |
cd56a39a DC |
503 | xfs_qm_shrink_scan( |
504 | struct shrinker *shrink, | |
505 | struct shrink_control *sc) | |
506 | { | |
507 | struct xfs_quotainfo *qi = container_of(shrink, | |
508 | struct xfs_quotainfo, qi_shrinker); | |
509 | struct xfs_qm_isolate isol; | |
2f5b56f8 | 510 | unsigned long freed; |
cd56a39a | 511 | int error; |
cd56a39a | 512 | |
d0164adc | 513 | if ((sc->gfp_mask & (__GFP_FS|__GFP_DIRECT_RECLAIM)) != (__GFP_FS|__GFP_DIRECT_RECLAIM)) |
cd56a39a DC |
514 | return 0; |
515 | ||
516 | INIT_LIST_HEAD(&isol.buffers); | |
517 | INIT_LIST_HEAD(&isol.dispose); | |
518 | ||
503c358c VD |
519 | freed = list_lru_shrink_walk(&qi->qi_lru, sc, |
520 | xfs_qm_dquot_isolate, &isol); | |
cd56a39a DC |
521 | |
522 | error = xfs_buf_delwri_submit(&isol.buffers); | |
523 | if (error) | |
524 | xfs_warn(NULL, "%s: dquot reclaim failed", __func__); | |
525 | ||
526 | while (!list_empty(&isol.dispose)) { | |
527 | struct xfs_dquot *dqp; | |
528 | ||
529 | dqp = list_first_entry(&isol.dispose, struct xfs_dquot, q_lru); | |
530 | list_del_init(&dqp->q_lru); | |
531 | xfs_qm_dqfree_one(dqp); | |
532 | } | |
533 | ||
534 | return freed; | |
535 | } | |
536 | ||
2f5b56f8 | 537 | static unsigned long |
cd56a39a DC |
538 | xfs_qm_shrink_count( |
539 | struct shrinker *shrink, | |
540 | struct shrink_control *sc) | |
541 | { | |
542 | struct xfs_quotainfo *qi = container_of(shrink, | |
543 | struct xfs_quotainfo, qi_shrinker); | |
544 | ||
503c358c | 545 | return list_lru_shrink_count(&qi->qi_lru, sc); |
cd56a39a DC |
546 | } |
547 | ||
be607946 CM |
548 | STATIC void |
549 | xfs_qm_set_defquota( | |
c072fbef | 550 | struct xfs_mount *mp, |
1a7ed271 | 551 | xfs_dqtype_t type, |
c072fbef | 552 | struct xfs_quotainfo *qinf) |
be607946 | 553 | { |
aefe69a4 PR |
554 | struct xfs_dquot *dqp; |
555 | struct xfs_def_quota *defq; | |
be607946 CM |
556 | int error; |
557 | ||
114e73cc | 558 | error = xfs_qm_dqget_uncached(mp, 0, type, &dqp); |
eac69e16 DW |
559 | if (error) |
560 | return; | |
be607946 | 561 | |
ce6e7e79 | 562 | defq = xfs_get_defquota(qinf, xfs_dquot_type(dqp)); |
be607946 | 563 | |
eac69e16 DW |
564 | /* |
565 | * Timers and warnings have been already set, let's just set the | |
566 | * default limits for this quota type | |
567 | */ | |
438769e3 DW |
568 | defq->blk.hard = dqp->q_blk.hardlimit; |
569 | defq->blk.soft = dqp->q_blk.softlimit; | |
570 | defq->ino.hard = dqp->q_ino.hardlimit; | |
571 | defq->ino.soft = dqp->q_ino.softlimit; | |
572 | defq->rtb.hard = dqp->q_rtb.hardlimit; | |
573 | defq->rtb.soft = dqp->q_rtb.softlimit; | |
eac69e16 DW |
574 | xfs_qm_dqdestroy(dqp); |
575 | } | |
576 | ||
577 | /* Initialize quota time limits from the root dquot. */ | |
578 | static void | |
579 | xfs_qm_init_timelimits( | |
580 | struct xfs_mount *mp, | |
1a7ed271 | 581 | xfs_dqtype_t type) |
eac69e16 | 582 | { |
e850301f ES |
583 | struct xfs_quotainfo *qinf = mp->m_quotainfo; |
584 | struct xfs_def_quota *defq; | |
eac69e16 | 585 | struct xfs_dquot *dqp; |
eac69e16 DW |
586 | int error; |
587 | ||
e850301f ES |
588 | defq = xfs_get_defquota(qinf, type); |
589 | ||
438769e3 DW |
590 | defq->blk.time = XFS_QM_BTIMELIMIT; |
591 | defq->ino.time = XFS_QM_ITIMELIMIT; | |
592 | defq->rtb.time = XFS_QM_RTBTIMELIMIT; | |
eac69e16 DW |
593 | |
594 | /* | |
595 | * We try to get the limits from the superuser's limits fields. | |
596 | * This is quite hacky, but it is standard quota practice. | |
597 | * | |
598 | * Since we may not have done a quotacheck by this point, just read | |
599 | * the dquot without attaching it to any hashtables or lists. | |
eac69e16 | 600 | */ |
eac69e16 DW |
601 | error = xfs_qm_dqget_uncached(mp, 0, type, &dqp); |
602 | if (error) | |
603 | return; | |
604 | ||
eac69e16 DW |
605 | /* |
606 | * The warnings and timers set the grace period given to | |
607 | * a user or group before he or she can not perform any | |
608 | * more writing. If it is zero, a default is used. | |
609 | */ | |
19dce7ea | 610 | if (dqp->q_blk.timer) |
438769e3 | 611 | defq->blk.time = dqp->q_blk.timer; |
19dce7ea | 612 | if (dqp->q_ino.timer) |
438769e3 | 613 | defq->ino.time = dqp->q_ino.timer; |
19dce7ea | 614 | if (dqp->q_rtb.timer) |
438769e3 | 615 | defq->rtb.time = dqp->q_rtb.timer; |
eac69e16 DW |
616 | |
617 | xfs_qm_dqdestroy(dqp); | |
be607946 CM |
618 | } |
619 | ||
1da177e4 LT |
620 | /* |
621 | * This initializes all the quota information that's kept in the | |
622 | * mount structure | |
623 | */ | |
ba0f32d4 | 624 | STATIC int |
1da177e4 | 625 | xfs_qm_init_quotainfo( |
114e73cc | 626 | struct xfs_mount *mp) |
1da177e4 | 627 | { |
114e73cc | 628 | struct xfs_quotainfo *qinf; |
114e73cc | 629 | int error; |
1da177e4 | 630 | |
149e53af | 631 | ASSERT(XFS_IS_QUOTA_ON(mp)); |
1da177e4 | 632 | |
c072fbef | 633 | qinf = mp->m_quotainfo = kmem_zalloc(sizeof(struct xfs_quotainfo), 0); |
1da177e4 | 634 | |
2451337d | 635 | error = list_lru_init(&qinf->qi_lru); |
ee4eec47 DC |
636 | if (error) |
637 | goto out_free_qinf; | |
5ca302c8 | 638 | |
1da177e4 LT |
639 | /* |
640 | * See if quotainodes are setup, and if not, allocate them, | |
641 | * and change the superblock accordingly. | |
642 | */ | |
ee4eec47 DC |
643 | error = xfs_qm_init_quotainos(mp); |
644 | if (error) | |
645 | goto out_free_lru; | |
1da177e4 | 646 | |
9f920f11 CH |
647 | INIT_RADIX_TREE(&qinf->qi_uquota_tree, GFP_NOFS); |
648 | INIT_RADIX_TREE(&qinf->qi_gquota_tree, GFP_NOFS); | |
92f8ff73 | 649 | INIT_RADIX_TREE(&qinf->qi_pquota_tree, GFP_NOFS); |
9f920f11 CH |
650 | mutex_init(&qinf->qi_tree_lock); |
651 | ||
1da177e4 | 652 | /* mutex used to serialize quotaoffs */ |
794ee1ba | 653 | mutex_init(&qinf->qi_quotaofflock); |
1da177e4 LT |
654 | |
655 | /* Precalc some constants */ | |
656 | qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
6ea94bb5 | 657 | qinf->qi_dqperchunk = xfs_calc_dquots_per_chunk(qinf->qi_dqchunklen); |
38c26bfd | 658 | if (xfs_has_bigtime(mp)) { |
4ea1ff3b DW |
659 | qinf->qi_expiry_min = |
660 | xfs_dq_bigtime_to_unix(XFS_DQ_BIGTIME_EXPIRY_MIN); | |
661 | qinf->qi_expiry_max = | |
662 | xfs_dq_bigtime_to_unix(XFS_DQ_BIGTIME_EXPIRY_MAX); | |
663 | } else { | |
664 | qinf->qi_expiry_min = XFS_DQ_LEGACY_EXPIRY_MIN; | |
665 | qinf->qi_expiry_max = XFS_DQ_LEGACY_EXPIRY_MAX; | |
666 | } | |
06dbf82b DW |
667 | trace_xfs_quota_expiry_range(mp, qinf->qi_expiry_min, |
668 | qinf->qi_expiry_max); | |
1da177e4 LT |
669 | |
670 | mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); | |
671 | ||
8cd4901d DW |
672 | xfs_qm_init_timelimits(mp, XFS_DQTYPE_USER); |
673 | xfs_qm_init_timelimits(mp, XFS_DQTYPE_GROUP); | |
674 | xfs_qm_init_timelimits(mp, XFS_DQTYPE_PROJ); | |
1da177e4 | 675 | |
149e53af | 676 | if (XFS_IS_UQUOTA_ON(mp)) |
8cd4901d | 677 | xfs_qm_set_defquota(mp, XFS_DQTYPE_USER, qinf); |
149e53af | 678 | if (XFS_IS_GQUOTA_ON(mp)) |
8cd4901d | 679 | xfs_qm_set_defquota(mp, XFS_DQTYPE_GROUP, qinf); |
149e53af | 680 | if (XFS_IS_PQUOTA_ON(mp)) |
8cd4901d | 681 | xfs_qm_set_defquota(mp, XFS_DQTYPE_PROJ, qinf); |
be607946 | 682 | |
cd56a39a DC |
683 | qinf->qi_shrinker.count_objects = xfs_qm_shrink_count; |
684 | qinf->qi_shrinker.scan_objects = xfs_qm_shrink_scan; | |
f8739c3c | 685 | qinf->qi_shrinker.seeks = DEFAULT_SEEKS; |
cd56a39a | 686 | qinf->qi_shrinker.flags = SHRINKER_NUMA_AWARE; |
3a3882ff | 687 | |
e33c267a RG |
688 | error = register_shrinker(&qinf->qi_shrinker, "xfs-qm:%s", |
689 | mp->m_super->s_id); | |
3a3882ff AK |
690 | if (error) |
691 | goto out_free_inos; | |
692 | ||
014c2544 | 693 | return 0; |
ee4eec47 | 694 | |
3a3882ff AK |
695 | out_free_inos: |
696 | mutex_destroy(&qinf->qi_quotaofflock); | |
697 | mutex_destroy(&qinf->qi_tree_lock); | |
698 | xfs_qm_destroy_quotainos(qinf); | |
ee4eec47 DC |
699 | out_free_lru: |
700 | list_lru_destroy(&qinf->qi_lru); | |
701 | out_free_qinf: | |
702 | kmem_free(qinf); | |
703 | mp->m_quotainfo = NULL; | |
704 | return error; | |
1da177e4 LT |
705 | } |
706 | ||
1da177e4 LT |
707 | /* |
708 | * Gets called when unmounting a filesystem or when all quotas get | |
709 | * turned off. | |
710 | * This purges the quota inodes, destroys locks and frees itself. | |
711 | */ | |
712 | void | |
713 | xfs_qm_destroy_quotainfo( | |
c072fbef | 714 | struct xfs_mount *mp) |
1da177e4 | 715 | { |
c072fbef | 716 | struct xfs_quotainfo *qi; |
1da177e4 LT |
717 | |
718 | qi = mp->m_quotainfo; | |
719 | ASSERT(qi != NULL); | |
1da177e4 | 720 | |
f8739c3c | 721 | unregister_shrinker(&qi->qi_shrinker); |
f5e1dd34 | 722 | list_lru_destroy(&qi->qi_lru); |
3a3882ff | 723 | xfs_qm_destroy_quotainos(qi); |
21968815 | 724 | mutex_destroy(&qi->qi_tree_lock); |
1da177e4 | 725 | mutex_destroy(&qi->qi_quotaofflock); |
f0e2d93c | 726 | kmem_free(qi); |
1da177e4 LT |
727 | mp->m_quotainfo = NULL; |
728 | } | |
729 | ||
1da177e4 LT |
730 | /* |
731 | * Create an inode and return with a reference already taken, but unlocked | |
732 | * This is how we create quota inodes | |
733 | */ | |
734 | STATIC int | |
735 | xfs_qm_qino_alloc( | |
1abcf261 DC |
736 | struct xfs_mount *mp, |
737 | struct xfs_inode **ipp, | |
738 | unsigned int flags) | |
1da177e4 | 739 | { |
1abcf261 DC |
740 | struct xfs_trans *tp; |
741 | int error; | |
742 | bool need_alloc = true; | |
1da177e4 | 743 | |
1abcf261 | 744 | *ipp = NULL; |
d892d586 CS |
745 | /* |
746 | * With superblock that doesn't have separate pquotino, we | |
747 | * share an inode between gquota and pquota. If the on-disk | |
748 | * superblock has GQUOTA and the filesystem is now mounted | |
749 | * with PQUOTA, just use sb_gquotino for sb_pquotino and | |
750 | * vice-versa. | |
751 | */ | |
38c26bfd | 752 | if (!xfs_has_pquotino(mp) && |
d892d586 CS |
753 | (flags & (XFS_QMOPT_PQUOTA|XFS_QMOPT_GQUOTA))) { |
754 | xfs_ino_t ino = NULLFSINO; | |
755 | ||
756 | if ((flags & XFS_QMOPT_PQUOTA) && | |
757 | (mp->m_sb.sb_gquotino != NULLFSINO)) { | |
758 | ino = mp->m_sb.sb_gquotino; | |
a71895c5 DW |
759 | if (XFS_IS_CORRUPT(mp, |
760 | mp->m_sb.sb_pquotino != NULLFSINO)) | |
a5155b87 | 761 | return -EFSCORRUPTED; |
d892d586 CS |
762 | } else if ((flags & XFS_QMOPT_GQUOTA) && |
763 | (mp->m_sb.sb_pquotino != NULLFSINO)) { | |
764 | ino = mp->m_sb.sb_pquotino; | |
a71895c5 DW |
765 | if (XFS_IS_CORRUPT(mp, |
766 | mp->m_sb.sb_gquotino != NULLFSINO)) | |
a5155b87 | 767 | return -EFSCORRUPTED; |
d892d586 CS |
768 | } |
769 | if (ino != NULLFSINO) { | |
1abcf261 | 770 | error = xfs_iget(mp, NULL, ino, 0, 0, ipp); |
d892d586 CS |
771 | if (error) |
772 | return error; | |
773 | mp->m_sb.sb_gquotino = NULLFSINO; | |
774 | mp->m_sb.sb_pquotino = NULLFSINO; | |
58c90473 | 775 | need_alloc = false; |
d892d586 CS |
776 | } |
777 | } | |
778 | ||
253f4911 | 779 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_create, |
fb353ff1 KX |
780 | need_alloc ? XFS_QM_QINOCREATE_SPACE_RES(mp) : 0, |
781 | 0, 0, &tp); | |
253f4911 | 782 | if (error) |
014c2544 | 783 | return error; |
1da177e4 | 784 | |
58c90473 | 785 | if (need_alloc) { |
b652afd9 DC |
786 | xfs_ino_t ino; |
787 | ||
788 | error = xfs_dialloc(&tp, 0, S_IFREG, &ino); | |
789 | if (!error) | |
f2d40141 | 790 | error = xfs_init_new_inode(&nop_mnt_idmap, tp, NULL, ino, |
b652afd9 | 791 | S_IFREG, 1, 0, 0, false, ipp); |
d892d586 | 792 | if (error) { |
4906e215 | 793 | xfs_trans_cancel(tp); |
d892d586 CS |
794 | return error; |
795 | } | |
1da177e4 LT |
796 | } |
797 | ||
1da177e4 LT |
798 | /* |
799 | * Make the changes in the superblock, and log those too. | |
800 | * sbfields arg may contain fields other than *QUOTINO; | |
801 | * VERSIONNUM for example. | |
802 | */ | |
3685c2a1 | 803 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 804 | if (flags & XFS_QMOPT_SBVERSION) { |
38c26bfd | 805 | ASSERT(!xfs_has_quota(mp)); |
1da177e4 | 806 | |
38c26bfd | 807 | xfs_add_quota(mp); |
1da177e4 LT |
808 | mp->m_sb.sb_uquotino = NULLFSINO; |
809 | mp->m_sb.sb_gquotino = NULLFSINO; | |
d892d586 | 810 | mp->m_sb.sb_pquotino = NULLFSINO; |
1da177e4 | 811 | |
d892d586 CS |
812 | /* qflags will get updated fully _after_ quotacheck */ |
813 | mp->m_sb.sb_qflags = mp->m_qflags & XFS_ALL_QUOTA_ACCT; | |
1da177e4 LT |
814 | } |
815 | if (flags & XFS_QMOPT_UQUOTA) | |
1abcf261 | 816 | mp->m_sb.sb_uquotino = (*ipp)->i_ino; |
d892d586 | 817 | else if (flags & XFS_QMOPT_GQUOTA) |
1abcf261 | 818 | mp->m_sb.sb_gquotino = (*ipp)->i_ino; |
d892d586 | 819 | else |
1abcf261 | 820 | mp->m_sb.sb_pquotino = (*ipp)->i_ino; |
3685c2a1 | 821 | spin_unlock(&mp->m_sb_lock); |
61e63ecb | 822 | xfs_log_sb(tp); |
1da177e4 | 823 | |
70393313 | 824 | error = xfs_trans_commit(tp); |
58c90473 | 825 | if (error) { |
75c8c50f | 826 | ASSERT(xfs_is_shutdown(mp)); |
53487786 | 827 | xfs_alert(mp, "%s failed (error %d)!", __func__, error); |
1da177e4 | 828 | } |
58c90473 | 829 | if (need_alloc) |
1abcf261 | 830 | xfs_finish_inode_setup(*ipp); |
58c90473 | 831 | return error; |
1da177e4 LT |
832 | } |
833 | ||
834 | ||
5b139738 | 835 | STATIC void |
1da177e4 | 836 | xfs_qm_reset_dqcounts( |
1a7ed271 DW |
837 | struct xfs_mount *mp, |
838 | struct xfs_buf *bp, | |
839 | xfs_dqid_t id, | |
840 | xfs_dqtype_t type) | |
1da177e4 | 841 | { |
6fcdc59d | 842 | struct xfs_dqblk *dqb; |
1da177e4 LT |
843 | int j; |
844 | ||
0b1b213f CH |
845 | trace_xfs_reset_dqcounts(bp, _RET_IP_); |
846 | ||
1da177e4 LT |
847 | /* |
848 | * Reset all counters and timers. They'll be | |
849 | * started afresh by xfs_qm_quotacheck. | |
850 | */ | |
851 | #ifdef DEBUG | |
90115407 | 852 | j = (int)XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB) / |
11a83f4c | 853 | sizeof(struct xfs_dqblk); |
8a7b8a89 | 854 | ASSERT(mp->m_quotainfo->qi_dqperchunk == j); |
1da177e4 | 855 | #endif |
6fcdc59d | 856 | dqb = bp->b_addr; |
8a7b8a89 | 857 | for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { |
6fcdc59d DC |
858 | struct xfs_disk_dquot *ddq; |
859 | ||
860 | ddq = (struct xfs_disk_dquot *)&dqb[j]; | |
861 | ||
1da177e4 LT |
862 | /* |
863 | * Do a sanity check, and if needed, repair the dqblk. Don't | |
864 | * output any warnings because it's perfectly possible to | |
eebf3cab DW |
865 | * find uninitialised dquot blks. See comment in |
866 | * xfs_dquot_verify. | |
1da177e4 | 867 | */ |
f9751c4a | 868 | if (xfs_dqblk_verify(mp, &dqb[j], id + j) || |
d8c1af0d | 869 | (dqb[j].dd_diskdq.d_type & XFS_DQTYPE_REC_MASK) != type) |
48fa1db8 | 870 | xfs_dqblk_repair(mp, &dqb[j], id + j, type); |
eeea7980 | 871 | |
dfcc70a8 JK |
872 | /* |
873 | * Reset type in case we are reusing group quota file for | |
874 | * project quotas or vice versa | |
875 | */ | |
d8c1af0d | 876 | ddq->d_type = type; |
1149d96a CH |
877 | ddq->d_bcount = 0; |
878 | ddq->d_icount = 0; | |
879 | ddq->d_rtbcount = 0; | |
5885539f DW |
880 | |
881 | /* | |
882 | * dquot id 0 stores the default grace period and the maximum | |
883 | * warning limit that were set by the administrator, so we | |
884 | * should not reset them. | |
885 | */ | |
886 | if (ddq->d_id != 0) { | |
887 | ddq->d_btimer = 0; | |
888 | ddq->d_itimer = 0; | |
889 | ddq->d_rtbtimer = 0; | |
890 | ddq->d_bwarns = 0; | |
891 | ddq->d_iwarns = 0; | |
892 | ddq->d_rtbwarns = 0; | |
38c26bfd | 893 | if (xfs_has_bigtime(mp)) |
4ea1ff3b | 894 | ddq->d_type |= XFS_DQTYPE_BIGTIME; |
5885539f | 895 | } |
6fcdc59d | 896 | |
38c26bfd | 897 | if (xfs_has_crc(mp)) { |
6fcdc59d DC |
898 | xfs_update_cksum((char *)&dqb[j], |
899 | sizeof(struct xfs_dqblk), | |
900 | XFS_DQUOT_CRC_OFF); | |
901 | } | |
1da177e4 | 902 | } |
1da177e4 LT |
903 | } |
904 | ||
905 | STATIC int | |
28b9060b | 906 | xfs_qm_reset_dqcounts_all( |
43ff2122 CH |
907 | struct xfs_mount *mp, |
908 | xfs_dqid_t firstid, | |
909 | xfs_fsblock_t bno, | |
910 | xfs_filblks_t blkcnt, | |
1a7ed271 | 911 | xfs_dqtype_t type, |
43ff2122 | 912 | struct list_head *buffer_list) |
1da177e4 | 913 | { |
43ff2122 | 914 | struct xfs_buf *bp; |
0dcc0728 | 915 | int error = 0; |
1da177e4 LT |
916 | |
917 | ASSERT(blkcnt > 0); | |
1da177e4 LT |
918 | |
919 | /* | |
920 | * Blkcnt arg can be a very big number, and might even be | |
921 | * larger than the log itself. So, we have to break it up into | |
922 | * manageable-sized transactions. | |
923 | * Note that we don't start a permanent transaction here; we might | |
924 | * not be able to get a log reservation for the whole thing up front, | |
925 | * and we don't really care to either, because we just discard | |
926 | * everything if we were to crash in the middle of this loop. | |
927 | */ | |
928 | while (blkcnt--) { | |
929 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
930 | XFS_FSB_TO_DADDR(mp, bno), | |
c6319198 | 931 | mp->m_quotainfo->qi_dqchunklen, 0, &bp, |
1813dd64 | 932 | &xfs_dquot_buf_ops); |
1da177e4 | 933 | |
3fe58f30 | 934 | /* |
6fcdc59d DC |
935 | * CRC and validation errors will return a EFSCORRUPTED here. If |
936 | * this occurs, re-read without CRC validation so that we can | |
937 | * repair the damage via xfs_qm_reset_dqcounts(). This process | |
938 | * will leave a trace in the log indicating corruption has | |
939 | * been detected. | |
3fe58f30 | 940 | */ |
2451337d | 941 | if (error == -EFSCORRUPTED) { |
6fcdc59d DC |
942 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, |
943 | XFS_FSB_TO_DADDR(mp, bno), | |
944 | mp->m_quotainfo->qi_dqchunklen, 0, &bp, | |
945 | NULL); | |
946 | } | |
947 | ||
948 | if (error) | |
949 | break; | |
950 | ||
5fd364fe DC |
951 | /* |
952 | * A corrupt buffer might not have a verifier attached, so | |
953 | * make sure we have the correct one attached before writeback | |
954 | * occurs. | |
955 | */ | |
956 | bp->b_ops = &xfs_dquot_buf_ops; | |
5b139738 | 957 | xfs_qm_reset_dqcounts(mp, bp, firstid, type); |
43ff2122 | 958 | xfs_buf_delwri_queue(bp, buffer_list); |
61551f1e | 959 | xfs_buf_relse(bp); |
6fcdc59d DC |
960 | |
961 | /* goto the next block. */ | |
1da177e4 | 962 | bno++; |
8a7b8a89 | 963 | firstid += mp->m_quotainfo->qi_dqperchunk; |
1da177e4 | 964 | } |
43ff2122 | 965 | |
014c2544 | 966 | return error; |
1da177e4 LT |
967 | } |
968 | ||
969 | /* | |
28b9060b DW |
970 | * Iterate over all allocated dquot blocks in this quota inode, zeroing all |
971 | * counters for every chunk of dquots that we find. | |
1da177e4 LT |
972 | */ |
973 | STATIC int | |
28b9060b | 974 | xfs_qm_reset_dqcounts_buf( |
43ff2122 CH |
975 | struct xfs_mount *mp, |
976 | struct xfs_inode *qip, | |
1a7ed271 | 977 | xfs_dqtype_t type, |
43ff2122 | 978 | struct list_head *buffer_list) |
1da177e4 | 979 | { |
43ff2122 | 980 | struct xfs_bmbt_irec *map; |
1da177e4 LT |
981 | int i, nmaps; /* number of map entries */ |
982 | int error; /* return value */ | |
983 | xfs_fileoff_t lblkno; | |
984 | xfs_filblks_t maxlblkcnt; | |
985 | xfs_dqid_t firstid; | |
986 | xfs_fsblock_t rablkno; | |
987 | xfs_filblks_t rablkcnt; | |
988 | ||
989 | error = 0; | |
990 | /* | |
c41564b5 | 991 | * This looks racy, but we can't keep an inode lock across a |
1da177e4 LT |
992 | * trans_reserve. But, this gets called during quotacheck, and that |
993 | * happens only at mount time which is single threaded. | |
994 | */ | |
6e73a545 | 995 | if (qip->i_nblocks == 0) |
014c2544 | 996 | return 0; |
1da177e4 | 997 | |
707e0dda | 998 | map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), 0); |
1da177e4 LT |
999 | |
1000 | lblkno = 0; | |
32972383 | 1001 | maxlblkcnt = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes); |
1da177e4 | 1002 | do { |
da51d32d CH |
1003 | uint lock_mode; |
1004 | ||
1da177e4 LT |
1005 | nmaps = XFS_DQITER_MAP_SIZE; |
1006 | /* | |
1007 | * We aren't changing the inode itself. Just changing | |
1008 | * some of its data. No new blocks are added here, and | |
1009 | * the inode is never added to the transaction. | |
1010 | */ | |
da51d32d | 1011 | lock_mode = xfs_ilock_data_map_shared(qip); |
5c8ed202 DC |
1012 | error = xfs_bmapi_read(qip, lblkno, maxlblkcnt - lblkno, |
1013 | map, &nmaps, 0); | |
da51d32d | 1014 | xfs_iunlock(qip, lock_mode); |
1da177e4 LT |
1015 | if (error) |
1016 | break; | |
1017 | ||
1018 | ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); | |
1019 | for (i = 0; i < nmaps; i++) { | |
1020 | ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); | |
1021 | ASSERT(map[i].br_blockcount); | |
1022 | ||
1023 | ||
1024 | lblkno += map[i].br_blockcount; | |
1025 | ||
1026 | if (map[i].br_startblock == HOLESTARTBLOCK) | |
1027 | continue; | |
1028 | ||
1029 | firstid = (xfs_dqid_t) map[i].br_startoff * | |
8a7b8a89 | 1030 | mp->m_quotainfo->qi_dqperchunk; |
1da177e4 LT |
1031 | /* |
1032 | * Do a read-ahead on the next extent. | |
1033 | */ | |
1034 | if ((i+1 < nmaps) && | |
1035 | (map[i+1].br_startblock != HOLESTARTBLOCK)) { | |
1036 | rablkcnt = map[i+1].br_blockcount; | |
1037 | rablkno = map[i+1].br_startblock; | |
1038 | while (rablkcnt--) { | |
1a1a3e97 | 1039 | xfs_buf_readahead(mp->m_ddev_targp, |
1da177e4 | 1040 | XFS_FSB_TO_DADDR(mp, rablkno), |
c3f8fc73 | 1041 | mp->m_quotainfo->qi_dqchunklen, |
5fd364fe | 1042 | &xfs_dquot_buf_ops); |
1da177e4 LT |
1043 | rablkno++; |
1044 | } | |
1045 | } | |
1046 | /* | |
1047 | * Iterate thru all the blks in the extent and | |
1048 | * reset the counters of all the dquots inside them. | |
1049 | */ | |
28b9060b | 1050 | error = xfs_qm_reset_dqcounts_all(mp, firstid, |
43ff2122 CH |
1051 | map[i].br_startblock, |
1052 | map[i].br_blockcount, | |
0dcc0728 | 1053 | type, buffer_list); |
43ff2122 CH |
1054 | if (error) |
1055 | goto out; | |
1da177e4 | 1056 | } |
1da177e4 LT |
1057 | } while (nmaps > 0); |
1058 | ||
43ff2122 | 1059 | out: |
f0e2d93c | 1060 | kmem_free(map); |
014c2544 | 1061 | return error; |
1da177e4 LT |
1062 | } |
1063 | ||
1064 | /* | |
1065 | * Called by dqusage_adjust in doing a quotacheck. | |
52fda114 CH |
1066 | * |
1067 | * Given the inode, and a dquot id this updates both the incore dqout as well | |
1068 | * as the buffer copy. This is so that once the quotacheck is done, we can | |
1069 | * just log all the buffers, as opposed to logging numerous updates to | |
1070 | * individual dquots. | |
1da177e4 | 1071 | */ |
52fda114 | 1072 | STATIC int |
1da177e4 | 1073 | xfs_qm_quotacheck_dqadjust( |
52fda114 | 1074 | struct xfs_inode *ip, |
1a7ed271 | 1075 | xfs_dqtype_t type, |
1da177e4 LT |
1076 | xfs_qcnt_t nblks, |
1077 | xfs_qcnt_t rtblks) | |
1078 | { | |
52fda114 CH |
1079 | struct xfs_mount *mp = ip->i_mount; |
1080 | struct xfs_dquot *dqp; | |
0fcef127 | 1081 | xfs_dqid_t id; |
52fda114 CH |
1082 | int error; |
1083 | ||
0fcef127 | 1084 | id = xfs_qm_id_for_quotatype(ip, type); |
30ab2dcf | 1085 | error = xfs_qm_dqget(mp, id, type, true, &dqp); |
52fda114 CH |
1086 | if (error) { |
1087 | /* | |
1088 | * Shouldn't be able to turn off quotas here. | |
1089 | */ | |
2451337d DC |
1090 | ASSERT(error != -ESRCH); |
1091 | ASSERT(error != -ENOENT); | |
52fda114 CH |
1092 | return error; |
1093 | } | |
0b1b213f CH |
1094 | |
1095 | trace_xfs_dqadjust(dqp); | |
1096 | ||
1da177e4 LT |
1097 | /* |
1098 | * Adjust the inode count and the block count to reflect this inode's | |
1099 | * resource usage. | |
1100 | */ | |
be37d40c | 1101 | dqp->q_ino.count++; |
784e80f5 | 1102 | dqp->q_ino.reserved++; |
1da177e4 | 1103 | if (nblks) { |
be37d40c | 1104 | dqp->q_blk.count += nblks; |
784e80f5 | 1105 | dqp->q_blk.reserved += nblks; |
1da177e4 LT |
1106 | } |
1107 | if (rtblks) { | |
be37d40c | 1108 | dqp->q_rtb.count += rtblks; |
784e80f5 | 1109 | dqp->q_rtb.reserved += rtblks; |
1da177e4 LT |
1110 | } |
1111 | ||
1112 | /* | |
1113 | * Set default limits, adjust timers (since we changed usages) | |
191f8488 CH |
1114 | * |
1115 | * There are no timers for the default values set in the root dquot. | |
1da177e4 | 1116 | */ |
c51df733 | 1117 | if (dqp->q_id) { |
c8c753e1 DW |
1118 | xfs_qm_adjust_dqlimits(dqp); |
1119 | xfs_qm_adjust_dqtimers(dqp); | |
1da177e4 LT |
1120 | } |
1121 | ||
985a78fd | 1122 | dqp->q_flags |= XFS_DQFLAG_DIRTY; |
52fda114 CH |
1123 | xfs_qm_dqput(dqp); |
1124 | return 0; | |
1da177e4 LT |
1125 | } |
1126 | ||
1da177e4 LT |
1127 | /* |
1128 | * callback routine supplied to bulkstat(). Given an inumber, find its | |
1129 | * dquots and update them to account for resources taken by that inode. | |
1130 | */ | |
1131 | /* ARGSUSED */ | |
1132 | STATIC int | |
1133 | xfs_qm_dqusage_adjust( | |
ebd126a6 DW |
1134 | struct xfs_mount *mp, |
1135 | struct xfs_trans *tp, | |
1136 | xfs_ino_t ino, | |
1137 | void *data) | |
1da177e4 | 1138 | { |
ebd126a6 DW |
1139 | struct xfs_inode *ip; |
1140 | xfs_qcnt_t nblks; | |
1141 | xfs_filblks_t rtblks = 0; /* total rt blks */ | |
1142 | int error; | |
1da177e4 | 1143 | |
149e53af | 1144 | ASSERT(XFS_IS_QUOTA_ON(mp)); |
1da177e4 LT |
1145 | |
1146 | /* | |
1147 | * rootino must have its resources accounted for, not so with the quota | |
1148 | * inodes. | |
1149 | */ | |
ebd126a6 DW |
1150 | if (xfs_is_quota_inode(&mp->m_sb, ino)) |
1151 | return 0; | |
1da177e4 LT |
1152 | |
1153 | /* | |
0fcef127 DW |
1154 | * We don't _need_ to take the ilock EXCL here because quotacheck runs |
1155 | * at mount time and therefore nobody will be racing chown/chproj. | |
1da177e4 | 1156 | */ |
ebd126a6 DW |
1157 | error = xfs_iget(mp, tp, ino, XFS_IGET_DONTCACHE, 0, &ip); |
1158 | if (error == -EINVAL || error == -ENOENT) | |
1159 | return 0; | |
1160 | if (error) | |
014c2544 | 1161 | return error; |
1da177e4 | 1162 | |
52fda114 | 1163 | ASSERT(ip->i_delayed_blks == 0); |
1da177e4 | 1164 | |
52fda114 | 1165 | if (XFS_IS_REALTIME_INODE(ip)) { |
732436ef | 1166 | struct xfs_ifork *ifp = xfs_ifork_ptr(ip, XFS_DATA_FORK); |
8bfadd8d | 1167 | |
862a804a CH |
1168 | error = xfs_iread_extents(tp, ip, XFS_DATA_FORK); |
1169 | if (error) | |
1170 | goto error0; | |
8bfadd8d CH |
1171 | |
1172 | xfs_bmap_count_leaves(ifp, &rtblks); | |
1da177e4 | 1173 | } |
1da177e4 | 1174 | |
6e73a545 | 1175 | nblks = (xfs_qcnt_t)ip->i_nblocks - rtblks; |
1da177e4 LT |
1176 | |
1177 | /* | |
1178 | * Add the (disk blocks and inode) resources occupied by this | |
1179 | * inode to its dquots. We do this adjustment in the incore dquot, | |
1180 | * and also copy the changes to its buffer. | |
1181 | * We don't care about putting these changes in a transaction | |
1182 | * envelope because if we crash in the middle of a 'quotacheck' | |
1183 | * we have to start from the beginning anyway. | |
1184 | * Once we're done, we'll log all the dquot bufs. | |
1185 | * | |
c41564b5 | 1186 | * The *QUOTA_ON checks below may look pretty racy, but quotachecks |
1da177e4 LT |
1187 | * and quotaoffs don't race. (Quotachecks happen at mount time only). |
1188 | */ | |
1189 | if (XFS_IS_UQUOTA_ON(mp)) { | |
8cd4901d | 1190 | error = xfs_qm_quotacheck_dqadjust(ip, XFS_DQTYPE_USER, nblks, |
0fcef127 | 1191 | rtblks); |
52fda114 CH |
1192 | if (error) |
1193 | goto error0; | |
1da177e4 | 1194 | } |
52fda114 CH |
1195 | |
1196 | if (XFS_IS_GQUOTA_ON(mp)) { | |
8cd4901d | 1197 | error = xfs_qm_quotacheck_dqadjust(ip, XFS_DQTYPE_GROUP, nblks, |
0fcef127 | 1198 | rtblks); |
52fda114 CH |
1199 | if (error) |
1200 | goto error0; | |
1da177e4 | 1201 | } |
1da177e4 | 1202 | |
52fda114 | 1203 | if (XFS_IS_PQUOTA_ON(mp)) { |
8cd4901d | 1204 | error = xfs_qm_quotacheck_dqadjust(ip, XFS_DQTYPE_PROJ, nblks, |
0fcef127 | 1205 | rtblks); |
52fda114 CH |
1206 | if (error) |
1207 | goto error0; | |
1208 | } | |
1209 | ||
52fda114 | 1210 | error0: |
44a8736b | 1211 | xfs_irele(ip); |
52fda114 | 1212 | return error; |
1da177e4 LT |
1213 | } |
1214 | ||
b84a3a96 CH |
1215 | STATIC int |
1216 | xfs_qm_flush_one( | |
43ff2122 CH |
1217 | struct xfs_dquot *dqp, |
1218 | void *data) | |
b84a3a96 | 1219 | { |
7912e7fe | 1220 | struct xfs_mount *mp = dqp->q_mount; |
43ff2122 | 1221 | struct list_head *buffer_list = data; |
fe7257fd | 1222 | struct xfs_buf *bp = NULL; |
b84a3a96 CH |
1223 | int error = 0; |
1224 | ||
1225 | xfs_dqlock(dqp); | |
985a78fd | 1226 | if (dqp->q_flags & XFS_DQFLAG_FREEING) |
b84a3a96 CH |
1227 | goto out_unlock; |
1228 | if (!XFS_DQ_IS_DIRTY(dqp)) | |
1229 | goto out_unlock; | |
1230 | ||
7912e7fe BF |
1231 | /* |
1232 | * The only way the dquot is already flush locked by the time quotacheck | |
1233 | * gets here is if reclaim flushed it before the dqadjust walk dirtied | |
1234 | * it for the final time. Quotacheck collects all dquot bufs in the | |
1235 | * local delwri queue before dquots are dirtied, so reclaim can't have | |
1236 | * possibly queued it for I/O. The only way out is to push the buffer to | |
1237 | * cycle the flush lock. | |
1238 | */ | |
1239 | if (!xfs_dqflock_nowait(dqp)) { | |
1240 | /* buf is pinned in-core by delwri list */ | |
85c73bf7 DC |
1241 | error = xfs_buf_incore(mp->m_ddev_targp, dqp->q_blkno, |
1242 | mp->m_quotainfo->qi_dqchunklen, 0, &bp); | |
1243 | if (error) | |
7912e7fe | 1244 | goto out_unlock; |
85c73bf7 | 1245 | |
f0c2d7d2 DW |
1246 | if (!(bp->b_flags & _XBF_DELWRI_Q)) { |
1247 | error = -EAGAIN; | |
1248 | xfs_buf_relse(bp); | |
1249 | goto out_unlock; | |
1250 | } | |
7912e7fe BF |
1251 | xfs_buf_unlock(bp); |
1252 | ||
1253 | xfs_buf_delwri_pushbuf(bp, buffer_list); | |
1254 | xfs_buf_rele(bp); | |
1255 | ||
1256 | error = -EAGAIN; | |
1257 | goto out_unlock; | |
1258 | } | |
1259 | ||
fe7257fd CH |
1260 | error = xfs_qm_dqflush(dqp, &bp); |
1261 | if (error) | |
1262 | goto out_unlock; | |
b84a3a96 | 1263 | |
43ff2122 | 1264 | xfs_buf_delwri_queue(bp, buffer_list); |
fe7257fd | 1265 | xfs_buf_relse(bp); |
b84a3a96 CH |
1266 | out_unlock: |
1267 | xfs_dqunlock(dqp); | |
1268 | return error; | |
1269 | } | |
1270 | ||
1da177e4 LT |
1271 | /* |
1272 | * Walk thru all the filesystem inodes and construct a consistent view | |
1273 | * of the disk quota world. If the quotacheck fails, disable quotas. | |
1274 | */ | |
eb866bbf | 1275 | STATIC int |
1da177e4 LT |
1276 | xfs_qm_quotacheck( |
1277 | xfs_mount_t *mp) | |
1278 | { | |
ebd126a6 | 1279 | int error, error2; |
113a5683 CS |
1280 | uint flags; |
1281 | LIST_HEAD (buffer_list); | |
1282 | struct xfs_inode *uip = mp->m_quotainfo->qi_uquotaip; | |
1283 | struct xfs_inode *gip = mp->m_quotainfo->qi_gquotaip; | |
92f8ff73 | 1284 | struct xfs_inode *pip = mp->m_quotainfo->qi_pquotaip; |
1da177e4 | 1285 | |
1da177e4 LT |
1286 | flags = 0; |
1287 | ||
92f8ff73 | 1288 | ASSERT(uip || gip || pip); |
149e53af | 1289 | ASSERT(XFS_IS_QUOTA_ON(mp)); |
1da177e4 | 1290 | |
0b932ccc | 1291 | xfs_notice(mp, "Quotacheck needed: Please wait."); |
1da177e4 LT |
1292 | |
1293 | /* | |
c8ad20ff | 1294 | * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset |
1da177e4 LT |
1295 | * their counters to zero. We need a clean slate. |
1296 | * We don't log our changes till later. | |
1297 | */ | |
8a7b8a89 | 1298 | if (uip) { |
8cd4901d | 1299 | error = xfs_qm_reset_dqcounts_buf(mp, uip, XFS_DQTYPE_USER, |
43ff2122 | 1300 | &buffer_list); |
8a7b8a89 | 1301 | if (error) |
1da177e4 LT |
1302 | goto error_return; |
1303 | flags |= XFS_UQUOTA_CHKD; | |
1304 | } | |
1305 | ||
8a7b8a89 | 1306 | if (gip) { |
8cd4901d | 1307 | error = xfs_qm_reset_dqcounts_buf(mp, gip, XFS_DQTYPE_GROUP, |
43ff2122 | 1308 | &buffer_list); |
8a7b8a89 | 1309 | if (error) |
1da177e4 | 1310 | goto error_return; |
92f8ff73 CS |
1311 | flags |= XFS_GQUOTA_CHKD; |
1312 | } | |
1313 | ||
1314 | if (pip) { | |
8cd4901d | 1315 | error = xfs_qm_reset_dqcounts_buf(mp, pip, XFS_DQTYPE_PROJ, |
92f8ff73 CS |
1316 | &buffer_list); |
1317 | if (error) | |
1318 | goto error_return; | |
1319 | flags |= XFS_PQUOTA_CHKD; | |
1da177e4 LT |
1320 | } |
1321 | ||
13d59a2a DW |
1322 | error = xfs_iwalk_threaded(mp, 0, 0, xfs_qm_dqusage_adjust, 0, true, |
1323 | NULL); | |
0c7273e4 DC |
1324 | |
1325 | /* | |
1326 | * On error, the inode walk may have partially populated the dquot | |
1327 | * caches. We must purge them before disabling quota and tearing down | |
1328 | * the quotainfo, or else the dquots will leak. | |
1329 | */ | |
1330 | if (error) | |
1331 | goto error_purge; | |
1da177e4 | 1332 | |
4b8879df | 1333 | /* |
b84a3a96 CH |
1334 | * We've made all the changes that we need to make incore. Flush them |
1335 | * down to disk buffers if everything was updated successfully. | |
4b8879df | 1336 | */ |
43ff2122 | 1337 | if (XFS_IS_UQUOTA_ON(mp)) { |
8cd4901d | 1338 | error = xfs_qm_dquot_walk(mp, XFS_DQTYPE_USER, xfs_qm_flush_one, |
43ff2122 CH |
1339 | &buffer_list); |
1340 | } | |
b84a3a96 | 1341 | if (XFS_IS_GQUOTA_ON(mp)) { |
8cd4901d | 1342 | error2 = xfs_qm_dquot_walk(mp, XFS_DQTYPE_GROUP, xfs_qm_flush_one, |
43ff2122 | 1343 | &buffer_list); |
b84a3a96 CH |
1344 | if (!error) |
1345 | error = error2; | |
1346 | } | |
1347 | if (XFS_IS_PQUOTA_ON(mp)) { | |
8cd4901d | 1348 | error2 = xfs_qm_dquot_walk(mp, XFS_DQTYPE_PROJ, xfs_qm_flush_one, |
43ff2122 | 1349 | &buffer_list); |
b84a3a96 CH |
1350 | if (!error) |
1351 | error = error2; | |
1352 | } | |
4b8879df | 1353 | |
43ff2122 CH |
1354 | error2 = xfs_buf_delwri_submit(&buffer_list); |
1355 | if (!error) | |
1356 | error = error2; | |
1357 | ||
1da177e4 LT |
1358 | /* |
1359 | * We can get this error if we couldn't do a dquot allocation inside | |
1360 | * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the | |
1361 | * dirty dquots that might be cached, we just want to get rid of them | |
1362 | * and turn quotaoff. The dquots won't be attached to any of the inodes | |
1363 | * at this point (because we intentionally didn't in dqget_noattach). | |
1364 | */ | |
0c7273e4 DC |
1365 | if (error) |
1366 | goto error_purge; | |
1da177e4 | 1367 | |
1da177e4 LT |
1368 | /* |
1369 | * If one type of quotas is off, then it will lose its | |
1370 | * quotachecked status, since we won't be doing accounting for | |
1371 | * that type anymore. | |
1372 | */ | |
4177af3a | 1373 | mp->m_qflags &= ~XFS_ALL_QUOTA_CHKD; |
1da177e4 LT |
1374 | mp->m_qflags |= flags; |
1375 | ||
0c7273e4 | 1376 | error_return: |
20e8a063 | 1377 | xfs_buf_delwri_cancel(&buffer_list); |
43ff2122 | 1378 | |
1da177e4 | 1379 | if (error) { |
0b932ccc DC |
1380 | xfs_warn(mp, |
1381 | "Quotacheck: Unsuccessful (Error %d): Disabling quotas.", | |
1382 | error); | |
1da177e4 LT |
1383 | /* |
1384 | * We must turn off quotas. | |
1385 | */ | |
1386 | ASSERT(mp->m_quotainfo != NULL); | |
1da177e4 | 1387 | xfs_qm_destroy_quotainfo(mp); |
31d5577b | 1388 | if (xfs_mount_reset_sbqflags(mp)) { |
0b932ccc DC |
1389 | xfs_warn(mp, |
1390 | "Quotacheck: Failed to reset quota flags."); | |
31d5577b | 1391 | } |
0b932ccc DC |
1392 | } else |
1393 | xfs_notice(mp, "Quotacheck: Done."); | |
d99831ff | 1394 | return error; |
0c7273e4 DC |
1395 | |
1396 | error_purge: | |
1397 | /* | |
1398 | * On error, we may have inodes queued for inactivation. This may try | |
1399 | * to attach dquots to the inode before running cleanup operations on | |
1400 | * the inode and this can race with the xfs_qm_destroy_quotainfo() call | |
1401 | * below that frees mp->m_quotainfo. To avoid this race, flush all the | |
1402 | * pending inodegc operations before we purge the dquots from memory, | |
1403 | * ensuring that background inactivation is idle whilst we turn off | |
1404 | * quotas. | |
1405 | */ | |
1406 | xfs_inodegc_flush(mp); | |
1407 | xfs_qm_dqpurge_all(mp); | |
1408 | goto error_return; | |
1409 | ||
1da177e4 LT |
1410 | } |
1411 | ||
eb866bbf JL |
1412 | /* |
1413 | * This is called from xfs_mountfs to start quotas and initialize all | |
1414 | * necessary data structures like quotainfo. This is also responsible for | |
1415 | * running a quotacheck as necessary. We are guaranteed that the superblock | |
1416 | * is consistently read in at this point. | |
1417 | * | |
1418 | * If we fail here, the mount will continue with quota turned off. We don't | |
1419 | * need to inidicate success or failure at all. | |
1420 | */ | |
1421 | void | |
1422 | xfs_qm_mount_quotas( | |
1423 | struct xfs_mount *mp) | |
1424 | { | |
1425 | int error = 0; | |
1426 | uint sbf; | |
1427 | ||
1428 | /* | |
1429 | * If quotas on realtime volumes is not supported, we disable | |
1430 | * quotas immediately. | |
1431 | */ | |
1432 | if (mp->m_sb.sb_rextents) { | |
1433 | xfs_notice(mp, "Cannot turn on quotas for realtime filesystem"); | |
1434 | mp->m_qflags = 0; | |
1435 | goto write_changes; | |
1436 | } | |
1437 | ||
149e53af | 1438 | ASSERT(XFS_IS_QUOTA_ON(mp)); |
eb866bbf JL |
1439 | |
1440 | /* | |
1441 | * Allocate the quotainfo structure inside the mount struct, and | |
1442 | * create quotainode(s), and change/rev superblock if necessary. | |
1443 | */ | |
1444 | error = xfs_qm_init_quotainfo(mp); | |
1445 | if (error) { | |
1446 | /* | |
1447 | * We must turn off quotas. | |
1448 | */ | |
1449 | ASSERT(mp->m_quotainfo == NULL); | |
1450 | mp->m_qflags = 0; | |
1451 | goto write_changes; | |
1452 | } | |
1453 | /* | |
1454 | * If any of the quotas are not consistent, do a quotacheck. | |
1455 | */ | |
1456 | if (XFS_QM_NEED_QUOTACHECK(mp)) { | |
1457 | error = xfs_qm_quotacheck(mp); | |
1458 | if (error) { | |
1459 | /* Quotacheck failed and disabled quotas. */ | |
1460 | return; | |
1461 | } | |
1462 | } | |
1463 | /* | |
1464 | * If one type of quotas is off, then it will lose its | |
1465 | * quotachecked status, since we won't be doing accounting for | |
1466 | * that type anymore. | |
1467 | */ | |
1468 | if (!XFS_IS_UQUOTA_ON(mp)) | |
1469 | mp->m_qflags &= ~XFS_UQUOTA_CHKD; | |
1470 | if (!XFS_IS_GQUOTA_ON(mp)) | |
1471 | mp->m_qflags &= ~XFS_GQUOTA_CHKD; | |
1472 | if (!XFS_IS_PQUOTA_ON(mp)) | |
1473 | mp->m_qflags &= ~XFS_PQUOTA_CHKD; | |
1474 | ||
1475 | write_changes: | |
1476 | /* | |
1477 | * We actually don't have to acquire the m_sb_lock at all. | |
1478 | * This can only be called from mount, and that's single threaded. XXX | |
1479 | */ | |
1480 | spin_lock(&mp->m_sb_lock); | |
1481 | sbf = mp->m_sb.sb_qflags; | |
1482 | mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL; | |
1483 | spin_unlock(&mp->m_sb_lock); | |
1484 | ||
1485 | if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { | |
61e63ecb | 1486 | if (xfs_sync_sb(mp, false)) { |
eb866bbf JL |
1487 | /* |
1488 | * We could only have been turning quotas off. | |
1489 | * We aren't in very good shape actually because | |
1490 | * the incore structures are convinced that quotas are | |
1491 | * off, but the on disk superblock doesn't know that ! | |
1492 | */ | |
149e53af | 1493 | ASSERT(!(XFS_IS_QUOTA_ON(mp))); |
eb866bbf JL |
1494 | xfs_alert(mp, "%s: Superblock update failed!", |
1495 | __func__); | |
1496 | } | |
1497 | } | |
1498 | ||
1499 | if (error) { | |
1500 | xfs_warn(mp, "Failed to initialize disk quotas."); | |
1501 | return; | |
1502 | } | |
1503 | } | |
1504 | ||
1da177e4 LT |
1505 | /* |
1506 | * This is called after the superblock has been read in and we're ready to | |
1507 | * iget the quota inodes. | |
1508 | */ | |
1509 | STATIC int | |
1510 | xfs_qm_init_quotainos( | |
1511 | xfs_mount_t *mp) | |
1512 | { | |
113a5683 CS |
1513 | struct xfs_inode *uip = NULL; |
1514 | struct xfs_inode *gip = NULL; | |
92f8ff73 | 1515 | struct xfs_inode *pip = NULL; |
113a5683 | 1516 | int error; |
113a5683 | 1517 | uint flags = 0; |
1da177e4 LT |
1518 | |
1519 | ASSERT(mp->m_quotainfo); | |
1da177e4 LT |
1520 | |
1521 | /* | |
1522 | * Get the uquota and gquota inodes | |
1523 | */ | |
38c26bfd | 1524 | if (xfs_has_quota(mp)) { |
1da177e4 LT |
1525 | if (XFS_IS_UQUOTA_ON(mp) && |
1526 | mp->m_sb.sb_uquotino != NULLFSINO) { | |
1527 | ASSERT(mp->m_sb.sb_uquotino > 0); | |
113a5683 CS |
1528 | error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, |
1529 | 0, 0, &uip); | |
1530 | if (error) | |
b474c7ae | 1531 | return error; |
1da177e4 | 1532 | } |
92f8ff73 | 1533 | if (XFS_IS_GQUOTA_ON(mp) && |
1da177e4 LT |
1534 | mp->m_sb.sb_gquotino != NULLFSINO) { |
1535 | ASSERT(mp->m_sb.sb_gquotino > 0); | |
113a5683 CS |
1536 | error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, |
1537 | 0, 0, &gip); | |
1538 | if (error) | |
1539 | goto error_rele; | |
1da177e4 | 1540 | } |
92f8ff73 | 1541 | if (XFS_IS_PQUOTA_ON(mp) && |
d892d586 CS |
1542 | mp->m_sb.sb_pquotino != NULLFSINO) { |
1543 | ASSERT(mp->m_sb.sb_pquotino > 0); | |
1544 | error = xfs_iget(mp, NULL, mp->m_sb.sb_pquotino, | |
92f8ff73 CS |
1545 | 0, 0, &pip); |
1546 | if (error) | |
1547 | goto error_rele; | |
1548 | } | |
1da177e4 LT |
1549 | } else { |
1550 | flags |= XFS_QMOPT_SBVERSION; | |
1da177e4 LT |
1551 | } |
1552 | ||
1553 | /* | |
92f8ff73 | 1554 | * Create the three inodes, if they don't exist already. The changes |
1da177e4 LT |
1555 | * made above will get added to a transaction and logged in one of |
1556 | * the qino_alloc calls below. If the device is readonly, | |
1557 | * temporarily switch to read-write to do this. | |
1558 | */ | |
1559 | if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { | |
113a5683 | 1560 | error = xfs_qm_qino_alloc(mp, &uip, |
113a5683 CS |
1561 | flags | XFS_QMOPT_UQUOTA); |
1562 | if (error) | |
1563 | goto error_rele; | |
1da177e4 LT |
1564 | |
1565 | flags &= ~XFS_QMOPT_SBVERSION; | |
1566 | } | |
92f8ff73 | 1567 | if (XFS_IS_GQUOTA_ON(mp) && gip == NULL) { |
c8ad20ff | 1568 | error = xfs_qm_qino_alloc(mp, &gip, |
92f8ff73 CS |
1569 | flags | XFS_QMOPT_GQUOTA); |
1570 | if (error) | |
1571 | goto error_rele; | |
1572 | ||
1573 | flags &= ~XFS_QMOPT_SBVERSION; | |
1574 | } | |
1575 | if (XFS_IS_PQUOTA_ON(mp) && pip == NULL) { | |
92f8ff73 | 1576 | error = xfs_qm_qino_alloc(mp, &pip, |
92f8ff73 | 1577 | flags | XFS_QMOPT_PQUOTA); |
113a5683 CS |
1578 | if (error) |
1579 | goto error_rele; | |
1da177e4 LT |
1580 | } |
1581 | ||
8a7b8a89 CH |
1582 | mp->m_quotainfo->qi_uquotaip = uip; |
1583 | mp->m_quotainfo->qi_gquotaip = gip; | |
92f8ff73 | 1584 | mp->m_quotainfo->qi_pquotaip = pip; |
1da177e4 | 1585 | |
014c2544 | 1586 | return 0; |
113a5683 CS |
1587 | |
1588 | error_rele: | |
1589 | if (uip) | |
44a8736b | 1590 | xfs_irele(uip); |
113a5683 | 1591 | if (gip) |
44a8736b | 1592 | xfs_irele(gip); |
92f8ff73 | 1593 | if (pip) |
44a8736b | 1594 | xfs_irele(pip); |
b474c7ae | 1595 | return error; |
1da177e4 LT |
1596 | } |
1597 | ||
3a3882ff AK |
1598 | STATIC void |
1599 | xfs_qm_destroy_quotainos( | |
c072fbef | 1600 | struct xfs_quotainfo *qi) |
3a3882ff AK |
1601 | { |
1602 | if (qi->qi_uquotaip) { | |
44a8736b | 1603 | xfs_irele(qi->qi_uquotaip); |
3a3882ff AK |
1604 | qi->qi_uquotaip = NULL; /* paranoia */ |
1605 | } | |
1606 | if (qi->qi_gquotaip) { | |
44a8736b | 1607 | xfs_irele(qi->qi_gquotaip); |
3a3882ff AK |
1608 | qi->qi_gquotaip = NULL; |
1609 | } | |
1610 | if (qi->qi_pquotaip) { | |
44a8736b | 1611 | xfs_irele(qi->qi_pquotaip); |
3a3882ff AK |
1612 | qi->qi_pquotaip = NULL; |
1613 | } | |
1614 | } | |
1615 | ||
92b2e5b3 CH |
1616 | STATIC void |
1617 | xfs_qm_dqfree_one( | |
1618 | struct xfs_dquot *dqp) | |
1619 | { | |
1620 | struct xfs_mount *mp = dqp->q_mount; | |
1621 | struct xfs_quotainfo *qi = mp->m_quotainfo; | |
1da177e4 | 1622 | |
9f920f11 | 1623 | mutex_lock(&qi->qi_tree_lock); |
51dbb1be | 1624 | radix_tree_delete(xfs_dquot_tree(qi, xfs_dquot_type(dqp)), dqp->q_id); |
368e1361 | 1625 | |
92b2e5b3 | 1626 | qi->qi_dquots--; |
b84a3a96 | 1627 | mutex_unlock(&qi->qi_tree_lock); |
92b2e5b3 CH |
1628 | |
1629 | xfs_qm_dqdestroy(dqp); | |
1630 | } | |
1631 | ||
1da177e4 LT |
1632 | /* --------------- utility functions for vnodeops ---------------- */ |
1633 | ||
1634 | ||
1635 | /* | |
6c77b0ea | 1636 | * Given an inode, a uid, gid and prid make sure that we have |
1da177e4 LT |
1637 | * allocated relevant dquot(s) on disk, and that we won't exceed inode |
1638 | * quotas by creating this file. | |
1639 | * This also attaches dquot(s) to the given inode after locking it, | |
1640 | * and returns the dquots corresponding to the uid and/or gid. | |
1641 | * | |
1642 | * in : inode (unlocked) | |
1643 | * out : udquot, gdquot with references taken and unlocked | |
1644 | */ | |
1645 | int | |
1646 | xfs_qm_vop_dqalloc( | |
7d095257 | 1647 | struct xfs_inode *ip, |
54295159 CH |
1648 | kuid_t uid, |
1649 | kgid_t gid, | |
7d095257 CH |
1650 | prid_t prid, |
1651 | uint flags, | |
1652 | struct xfs_dquot **O_udqpp, | |
92f8ff73 CS |
1653 | struct xfs_dquot **O_gdqpp, |
1654 | struct xfs_dquot **O_pdqpp) | |
1da177e4 | 1655 | { |
7d095257 | 1656 | struct xfs_mount *mp = ip->i_mount; |
54295159 | 1657 | struct inode *inode = VFS_I(ip); |
ba8adad5 | 1658 | struct user_namespace *user_ns = inode->i_sb->s_user_ns; |
113a5683 CS |
1659 | struct xfs_dquot *uq = NULL; |
1660 | struct xfs_dquot *gq = NULL; | |
92f8ff73 | 1661 | struct xfs_dquot *pq = NULL; |
7d095257 CH |
1662 | int error; |
1663 | uint lockflags; | |
1da177e4 | 1664 | |
149e53af | 1665 | if (!XFS_IS_QUOTA_ON(mp)) |
1da177e4 LT |
1666 | return 0; |
1667 | ||
1668 | lockflags = XFS_ILOCK_EXCL; | |
1669 | xfs_ilock(ip, lockflags); | |
1670 | ||
bd186aa9 | 1671 | if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) |
54295159 | 1672 | gid = inode->i_gid; |
1da177e4 LT |
1673 | |
1674 | /* | |
1675 | * Attach the dquot(s) to this inode, doing a dquot allocation | |
1676 | * if necessary. The dquot(s) will not be locked. | |
1677 | */ | |
1678 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
4882c19d | 1679 | error = xfs_qm_dqattach_locked(ip, true); |
7d095257 | 1680 | if (error) { |
1da177e4 | 1681 | xfs_iunlock(ip, lockflags); |
014c2544 | 1682 | return error; |
1da177e4 LT |
1683 | } |
1684 | } | |
1685 | ||
c8ad20ff | 1686 | if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { |
97611f93 | 1687 | ASSERT(O_udqpp); |
54295159 | 1688 | if (!uid_eq(inode->i_uid, uid)) { |
1da177e4 LT |
1689 | /* |
1690 | * What we need is the dquot that has this uid, and | |
1691 | * if we send the inode to dqget, the uid of the inode | |
1692 | * takes priority over what's sent in the uid argument. | |
1693 | * We must unlock inode here before calling dqget if | |
1694 | * we're not sending the inode, because otherwise | |
1695 | * we'll deadlock by doing trans_reserve while | |
1696 | * holding ilock. | |
1697 | */ | |
1698 | xfs_iunlock(ip, lockflags); | |
ba8adad5 | 1699 | error = xfs_qm_dqget(mp, from_kuid(user_ns, uid), |
8cd4901d | 1700 | XFS_DQTYPE_USER, true, &uq); |
113a5683 | 1701 | if (error) { |
2451337d | 1702 | ASSERT(error != -ENOENT); |
014c2544 | 1703 | return error; |
1da177e4 LT |
1704 | } |
1705 | /* | |
1706 | * Get the ilock in the right order. | |
1707 | */ | |
1708 | xfs_dqunlock(uq); | |
1709 | lockflags = XFS_ILOCK_SHARED; | |
1710 | xfs_ilock(ip, lockflags); | |
1711 | } else { | |
1712 | /* | |
1713 | * Take an extra reference, because we'll return | |
1714 | * this to caller | |
1715 | */ | |
1716 | ASSERT(ip->i_udquot); | |
78e55892 | 1717 | uq = xfs_qm_dqhold(ip->i_udquot); |
1da177e4 LT |
1718 | } |
1719 | } | |
c8ad20ff | 1720 | if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { |
97611f93 | 1721 | ASSERT(O_gdqpp); |
54295159 | 1722 | if (!gid_eq(inode->i_gid, gid)) { |
1da177e4 | 1723 | xfs_iunlock(ip, lockflags); |
ba8adad5 | 1724 | error = xfs_qm_dqget(mp, from_kgid(user_ns, gid), |
8cd4901d | 1725 | XFS_DQTYPE_GROUP, true, &gq); |
113a5683 | 1726 | if (error) { |
2451337d | 1727 | ASSERT(error != -ENOENT); |
113a5683 | 1728 | goto error_rele; |
1da177e4 LT |
1729 | } |
1730 | xfs_dqunlock(gq); | |
1731 | lockflags = XFS_ILOCK_SHARED; | |
1732 | xfs_ilock(ip, lockflags); | |
1733 | } else { | |
1734 | ASSERT(ip->i_gdquot); | |
78e55892 | 1735 | gq = xfs_qm_dqhold(ip->i_gdquot); |
1da177e4 | 1736 | } |
92f8ff73 CS |
1737 | } |
1738 | if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { | |
97611f93 | 1739 | ASSERT(O_pdqpp); |
ceaf603c | 1740 | if (ip->i_projid != prid) { |
c8ad20ff | 1741 | xfs_iunlock(ip, lockflags); |
5aff6750 | 1742 | error = xfs_qm_dqget(mp, prid, |
8cd4901d | 1743 | XFS_DQTYPE_PROJ, true, &pq); |
113a5683 | 1744 | if (error) { |
2451337d | 1745 | ASSERT(error != -ENOENT); |
113a5683 | 1746 | goto error_rele; |
c8ad20ff | 1747 | } |
92f8ff73 | 1748 | xfs_dqunlock(pq); |
c8ad20ff NS |
1749 | lockflags = XFS_ILOCK_SHARED; |
1750 | xfs_ilock(ip, lockflags); | |
1751 | } else { | |
92f8ff73 CS |
1752 | ASSERT(ip->i_pdquot); |
1753 | pq = xfs_qm_dqhold(ip->i_pdquot); | |
c8ad20ff | 1754 | } |
1da177e4 | 1755 | } |
c140735b | 1756 | trace_xfs_dquot_dqalloc(ip); |
1da177e4 LT |
1757 | |
1758 | xfs_iunlock(ip, lockflags); | |
1759 | if (O_udqpp) | |
1760 | *O_udqpp = uq; | |
d2a5e3c6 | 1761 | else |
1da177e4 LT |
1762 | xfs_qm_dqrele(uq); |
1763 | if (O_gdqpp) | |
1764 | *O_gdqpp = gq; | |
d2a5e3c6 | 1765 | else |
1da177e4 | 1766 | xfs_qm_dqrele(gq); |
92f8ff73 CS |
1767 | if (O_pdqpp) |
1768 | *O_pdqpp = pq; | |
d2a5e3c6 | 1769 | else |
92f8ff73 | 1770 | xfs_qm_dqrele(pq); |
014c2544 | 1771 | return 0; |
113a5683 CS |
1772 | |
1773 | error_rele: | |
d2a5e3c6 ME |
1774 | xfs_qm_dqrele(gq); |
1775 | xfs_qm_dqrele(uq); | |
113a5683 | 1776 | return error; |
1da177e4 LT |
1777 | } |
1778 | ||
1779 | /* | |
1780 | * Actually transfer ownership, and do dquot modifications. | |
1781 | * These were already reserved. | |
1782 | */ | |
aefe69a4 | 1783 | struct xfs_dquot * |
1da177e4 | 1784 | xfs_qm_vop_chown( |
aefe69a4 PR |
1785 | struct xfs_trans *tp, |
1786 | struct xfs_inode *ip, | |
1787 | struct xfs_dquot **IO_olddq, | |
1788 | struct xfs_dquot *newdq) | |
1da177e4 | 1789 | { |
aefe69a4 | 1790 | struct xfs_dquot *prevdq; |
06d10dd9 NS |
1791 | uint bfield = XFS_IS_REALTIME_INODE(ip) ? |
1792 | XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; | |
1793 | ||
7d095257 | 1794 | |
579aa9ca | 1795 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
149e53af | 1796 | ASSERT(XFS_IS_QUOTA_ON(ip->i_mount)); |
1da177e4 LT |
1797 | |
1798 | /* old dquot */ | |
1799 | prevdq = *IO_olddq; | |
1800 | ASSERT(prevdq); | |
1801 | ASSERT(prevdq != newdq); | |
1802 | ||
6e73a545 | 1803 | xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_nblocks)); |
06d10dd9 | 1804 | xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); |
1da177e4 LT |
1805 | |
1806 | /* the sparkling new dquot */ | |
6e73a545 | 1807 | xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_nblocks); |
06d10dd9 | 1808 | xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); |
1da177e4 | 1809 | |
1aecf373 DW |
1810 | /* |
1811 | * Back when we made quota reservations for the chown, we reserved the | |
1812 | * ondisk blocks + delalloc blocks with the new dquot. Now that we've | |
1813 | * switched the dquots, decrease the new dquot's block reservation | |
1814 | * (having already bumped up the real counter) so that we don't have | |
1815 | * any reservation to give back when we commit. | |
1816 | */ | |
1817 | xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_RES_BLKS, | |
1818 | -ip->i_delayed_blks); | |
1819 | ||
1820 | /* | |
1821 | * Give the incore reservation for delalloc blocks back to the old | |
1822 | * dquot. We don't normally handle delalloc quota reservations | |
1823 | * transactionally, so just lock the dquot and subtract from the | |
1824 | * reservation. Dirty the transaction because it's too late to turn | |
1825 | * back now. | |
1826 | */ | |
1827 | tp->t_flags |= XFS_TRANS_DIRTY; | |
1828 | xfs_dqlock(prevdq); | |
1829 | ASSERT(prevdq->q_blk.reserved >= ip->i_delayed_blks); | |
1830 | prevdq->q_blk.reserved -= ip->i_delayed_blks; | |
1831 | xfs_dqunlock(prevdq); | |
1832 | ||
1da177e4 | 1833 | /* |
78e55892 CH |
1834 | * Take an extra reference, because the inode is going to keep |
1835 | * this dquot pointer even after the trans_commit. | |
1da177e4 | 1836 | */ |
78e55892 | 1837 | *IO_olddq = xfs_qm_dqhold(newdq); |
1da177e4 | 1838 | |
014c2544 | 1839 | return prevdq; |
1da177e4 LT |
1840 | } |
1841 | ||
1da177e4 LT |
1842 | int |
1843 | xfs_qm_vop_rename_dqattach( | |
7d095257 | 1844 | struct xfs_inode **i_tab) |
1da177e4 | 1845 | { |
7d095257 CH |
1846 | struct xfs_mount *mp = i_tab[0]->i_mount; |
1847 | int i; | |
1da177e4 | 1848 | |
149e53af | 1849 | if (!XFS_IS_QUOTA_ON(mp)) |
014c2544 | 1850 | return 0; |
1da177e4 | 1851 | |
7d095257 CH |
1852 | for (i = 0; (i < 4 && i_tab[i]); i++) { |
1853 | struct xfs_inode *ip = i_tab[i]; | |
1854 | int error; | |
1855 | ||
1da177e4 LT |
1856 | /* |
1857 | * Watch out for duplicate entries in the table. | |
1858 | */ | |
7d095257 CH |
1859 | if (i == 0 || ip != i_tab[i-1]) { |
1860 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
c14cfcca | 1861 | error = xfs_qm_dqattach(ip); |
1da177e4 | 1862 | if (error) |
014c2544 | 1863 | return error; |
1da177e4 LT |
1864 | } |
1865 | } | |
1866 | } | |
014c2544 | 1867 | return 0; |
1da177e4 LT |
1868 | } |
1869 | ||
1870 | void | |
7d095257 CH |
1871 | xfs_qm_vop_create_dqattach( |
1872 | struct xfs_trans *tp, | |
1873 | struct xfs_inode *ip, | |
1874 | struct xfs_dquot *udqp, | |
92f8ff73 CS |
1875 | struct xfs_dquot *gdqp, |
1876 | struct xfs_dquot *pdqp) | |
1da177e4 | 1877 | { |
7d095257 CH |
1878 | struct xfs_mount *mp = tp->t_mountp; |
1879 | ||
149e53af | 1880 | if (!XFS_IS_QUOTA_ON(mp)) |
1da177e4 LT |
1881 | return; |
1882 | ||
579aa9ca | 1883 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 1884 | |
37eb9706 | 1885 | if (udqp && XFS_IS_UQUOTA_ON(mp)) { |
1da177e4 | 1886 | ASSERT(ip->i_udquot == NULL); |
c51df733 | 1887 | ASSERT(i_uid_read(VFS_I(ip)) == udqp->q_id); |
78e55892 CH |
1888 | |
1889 | ip->i_udquot = xfs_qm_dqhold(udqp); | |
1da177e4 LT |
1890 | xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); |
1891 | } | |
37eb9706 | 1892 | if (gdqp && XFS_IS_GQUOTA_ON(mp)) { |
1da177e4 | 1893 | ASSERT(ip->i_gdquot == NULL); |
c51df733 | 1894 | ASSERT(i_gid_read(VFS_I(ip)) == gdqp->q_id); |
54295159 | 1895 | |
78e55892 | 1896 | ip->i_gdquot = xfs_qm_dqhold(gdqp); |
1da177e4 LT |
1897 | xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); |
1898 | } | |
37eb9706 | 1899 | if (pdqp && XFS_IS_PQUOTA_ON(mp)) { |
92f8ff73 | 1900 | ASSERT(ip->i_pdquot == NULL); |
ceaf603c | 1901 | ASSERT(ip->i_projid == pdqp->q_id); |
92f8ff73 CS |
1902 | |
1903 | ip->i_pdquot = xfs_qm_dqhold(pdqp); | |
1904 | xfs_trans_mod_dquot(tp, pdqp, XFS_TRANS_DQ_ICOUNT, 1); | |
1905 | } | |
1da177e4 LT |
1906 | } |
1907 | ||
108523b8 DW |
1908 | /* Decide if this inode's dquot is near an enforcement boundary. */ |
1909 | bool | |
1910 | xfs_inode_near_dquot_enforcement( | |
1911 | struct xfs_inode *ip, | |
1912 | xfs_dqtype_t type) | |
1913 | { | |
1914 | struct xfs_dquot *dqp; | |
1915 | int64_t freesp; | |
1916 | ||
1917 | /* We only care for quotas that are enabled and enforced. */ | |
1918 | dqp = xfs_inode_dquot(ip, type); | |
1919 | if (!dqp || !xfs_dquot_is_enforced(dqp)) | |
1920 | return false; | |
1921 | ||
1922 | if (xfs_dquot_res_over_limits(&dqp->q_ino) || | |
1923 | xfs_dquot_res_over_limits(&dqp->q_rtb)) | |
1924 | return true; | |
1925 | ||
1926 | /* For space on the data device, check the various thresholds. */ | |
1927 | if (!dqp->q_prealloc_hi_wmark) | |
1928 | return false; | |
1929 | ||
1930 | if (dqp->q_blk.reserved < dqp->q_prealloc_lo_wmark) | |
1931 | return false; | |
1932 | ||
1933 | if (dqp->q_blk.reserved >= dqp->q_prealloc_hi_wmark) | |
1934 | return true; | |
1935 | ||
1936 | freesp = dqp->q_prealloc_hi_wmark - dqp->q_blk.reserved; | |
1937 | if (freesp < dqp->q_low_space[XFS_QLOWSP_5_PCNT]) | |
1938 | return true; | |
1939 | ||
1940 | return false; | |
1941 | } |