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Commit | Line | Data |
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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" |
a844f451 | 22 | #include "xfs_inum.h" |
1da177e4 LT |
23 | #include "xfs_trans.h" |
24 | #include "xfs_sb.h" | |
25 | #include "xfs_ag.h" | |
1da177e4 | 26 | #include "xfs_alloc.h" |
1da177e4 LT |
27 | #include "xfs_quota.h" |
28 | #include "xfs_mount.h" | |
1da177e4 LT |
29 | #include "xfs_bmap_btree.h" |
30 | #include "xfs_ialloc_btree.h" | |
1da177e4 LT |
31 | #include "xfs_dinode.h" |
32 | #include "xfs_inode.h" | |
a844f451 NS |
33 | #include "xfs_ialloc.h" |
34 | #include "xfs_itable.h" | |
1da177e4 LT |
35 | #include "xfs_rtalloc.h" |
36 | #include "xfs_error.h" | |
a844f451 | 37 | #include "xfs_bmap.h" |
1da177e4 LT |
38 | #include "xfs_attr.h" |
39 | #include "xfs_buf_item.h" | |
40 | #include "xfs_trans_space.h" | |
41 | #include "xfs_utils.h" | |
1da177e4 | 42 | #include "xfs_qm.h" |
0b1b213f | 43 | #include "xfs_trace.h" |
1da177e4 LT |
44 | |
45 | /* | |
46 | * The global quota manager. There is only one of these for the entire | |
47 | * system, _not_ one per file system. XQM keeps track of the overall | |
48 | * quota functionality, including maintaining the freelist and hash | |
49 | * tables of dquots. | |
50 | */ | |
a0b0b8a5 | 51 | struct mutex xfs_Gqm_lock; |
1da177e4 | 52 | struct xfs_qm *xfs_Gqm; |
6b3f6b5b | 53 | uint ndquot; |
1da177e4 LT |
54 | |
55 | kmem_zone_t *qm_dqzone; | |
56 | kmem_zone_t *qm_dqtrxzone; | |
1da177e4 LT |
57 | |
58 | STATIC void xfs_qm_list_init(xfs_dqlist_t *, char *, int); | |
59 | STATIC void xfs_qm_list_destroy(xfs_dqlist_t *); | |
60 | ||
61 | STATIC int xfs_qm_init_quotainos(xfs_mount_t *); | |
ba0f32d4 | 62 | STATIC int xfs_qm_init_quotainfo(xfs_mount_t *); |
1495f230 | 63 | STATIC int xfs_qm_shake(struct shrinker *, struct shrink_control *); |
1da177e4 | 64 | |
8e1f936b RR |
65 | static struct shrinker xfs_qm_shaker = { |
66 | .shrink = xfs_qm_shake, | |
67 | .seeks = DEFAULT_SEEKS, | |
68 | }; | |
69 | ||
1da177e4 LT |
70 | /* |
71 | * Initialize the XQM structure. | |
72 | * Note that there is not one quota manager per file system. | |
73 | */ | |
74 | STATIC struct xfs_qm * | |
75 | xfs_Gqm_init(void) | |
76 | { | |
6b3f6b5b NS |
77 | xfs_dqhash_t *udqhash, *gdqhash; |
78 | xfs_qm_t *xqm; | |
215101c3 NS |
79 | size_t hsize; |
80 | uint i; | |
1da177e4 LT |
81 | |
82 | /* | |
83 | * Initialize the dquot hash tables. | |
84 | */ | |
77e4635a | 85 | udqhash = kmem_zalloc_greedy(&hsize, |
5995cb7d | 86 | XFS_QM_HASHSIZE_LOW * sizeof(xfs_dqhash_t), |
bdfb0430 CH |
87 | XFS_QM_HASHSIZE_HIGH * sizeof(xfs_dqhash_t)); |
88 | if (!udqhash) | |
89 | goto out; | |
90 | ||
91 | gdqhash = kmem_zalloc_large(hsize); | |
d67b1b03 | 92 | if (!gdqhash) |
bdfb0430 CH |
93 | goto out_free_udqhash; |
94 | ||
77e4635a | 95 | hsize /= sizeof(xfs_dqhash_t); |
6b3f6b5b | 96 | ndquot = hsize << 8; |
1da177e4 | 97 | |
6b3f6b5b NS |
98 | xqm = kmem_zalloc(sizeof(xfs_qm_t), KM_SLEEP); |
99 | xqm->qm_dqhashmask = hsize - 1; | |
100 | xqm->qm_usr_dqhtable = udqhash; | |
101 | xqm->qm_grp_dqhtable = gdqhash; | |
1da177e4 LT |
102 | ASSERT(xqm->qm_usr_dqhtable != NULL); |
103 | ASSERT(xqm->qm_grp_dqhtable != NULL); | |
104 | ||
105 | for (i = 0; i < hsize; i++) { | |
106 | xfs_qm_list_init(&(xqm->qm_usr_dqhtable[i]), "uxdqh", i); | |
107 | xfs_qm_list_init(&(xqm->qm_grp_dqhtable[i]), "gxdqh", i); | |
108 | } | |
109 | ||
110 | /* | |
111 | * Freelist of all dquots of all file systems | |
112 | */ | |
3a8406f6 DC |
113 | INIT_LIST_HEAD(&xqm->qm_dqfrlist); |
114 | xqm->qm_dqfrlist_cnt = 0; | |
115 | mutex_init(&xqm->qm_dqfrlist_lock); | |
1da177e4 LT |
116 | |
117 | /* | |
118 | * dquot zone. we register our own low-memory callback. | |
119 | */ | |
120 | if (!qm_dqzone) { | |
121 | xqm->qm_dqzone = kmem_zone_init(sizeof(xfs_dquot_t), | |
122 | "xfs_dquots"); | |
123 | qm_dqzone = xqm->qm_dqzone; | |
124 | } else | |
125 | xqm->qm_dqzone = qm_dqzone; | |
126 | ||
8e1f936b | 127 | register_shrinker(&xfs_qm_shaker); |
1da177e4 LT |
128 | |
129 | /* | |
130 | * The t_dqinfo portion of transactions. | |
131 | */ | |
132 | if (!qm_dqtrxzone) { | |
133 | xqm->qm_dqtrxzone = kmem_zone_init(sizeof(xfs_dquot_acct_t), | |
134 | "xfs_dqtrx"); | |
135 | qm_dqtrxzone = xqm->qm_dqtrxzone; | |
136 | } else | |
137 | xqm->qm_dqtrxzone = qm_dqtrxzone; | |
138 | ||
139 | atomic_set(&xqm->qm_totaldquots, 0); | |
140 | xqm->qm_dqfree_ratio = XFS_QM_DQFREE_RATIO; | |
141 | xqm->qm_nrefs = 0; | |
1da177e4 | 142 | return xqm; |
bdfb0430 CH |
143 | |
144 | out_free_udqhash: | |
145 | kmem_free_large(udqhash); | |
146 | out: | |
147 | return NULL; | |
1da177e4 LT |
148 | } |
149 | ||
150 | /* | |
151 | * Destroy the global quota manager when its reference count goes to zero. | |
152 | */ | |
ba0f32d4 | 153 | STATIC void |
1da177e4 LT |
154 | xfs_qm_destroy( |
155 | struct xfs_qm *xqm) | |
156 | { | |
3a8406f6 | 157 | struct xfs_dquot *dqp, *n; |
1da177e4 LT |
158 | int hsize, i; |
159 | ||
160 | ASSERT(xqm != NULL); | |
161 | ASSERT(xqm->qm_nrefs == 0); | |
8e1f936b | 162 | unregister_shrinker(&xfs_qm_shaker); |
1da177e4 LT |
163 | hsize = xqm->qm_dqhashmask + 1; |
164 | for (i = 0; i < hsize; i++) { | |
165 | xfs_qm_list_destroy(&(xqm->qm_usr_dqhtable[i])); | |
166 | xfs_qm_list_destroy(&(xqm->qm_grp_dqhtable[i])); | |
167 | } | |
bdfb0430 CH |
168 | kmem_free_large(xqm->qm_usr_dqhtable); |
169 | kmem_free_large(xqm->qm_grp_dqhtable); | |
1da177e4 LT |
170 | xqm->qm_usr_dqhtable = NULL; |
171 | xqm->qm_grp_dqhtable = NULL; | |
172 | xqm->qm_dqhashmask = 0; | |
3a8406f6 DC |
173 | |
174 | /* frlist cleanup */ | |
175 | mutex_lock(&xqm->qm_dqfrlist_lock); | |
176 | list_for_each_entry_safe(dqp, n, &xqm->qm_dqfrlist, q_freelist) { | |
177 | xfs_dqlock(dqp); | |
3a8406f6 DC |
178 | list_del_init(&dqp->q_freelist); |
179 | xfs_Gqm->qm_dqfrlist_cnt--; | |
180 | xfs_dqunlock(dqp); | |
181 | xfs_qm_dqdestroy(dqp); | |
182 | } | |
183 | mutex_unlock(&xqm->qm_dqfrlist_lock); | |
184 | mutex_destroy(&xqm->qm_dqfrlist_lock); | |
f0e2d93c | 185 | kmem_free(xqm); |
1da177e4 LT |
186 | } |
187 | ||
188 | /* | |
189 | * Called at mount time to let XQM know that another file system is | |
190 | * starting quotas. This isn't crucial information as the individual mount | |
191 | * structures are pretty independent, but it helps the XQM keep a | |
192 | * global view of what's going on. | |
193 | */ | |
194 | /* ARGSUSED */ | |
195 | STATIC int | |
196 | xfs_qm_hold_quotafs_ref( | |
197 | struct xfs_mount *mp) | |
198 | { | |
199 | /* | |
200 | * Need to lock the xfs_Gqm structure for things like this. For example, | |
201 | * the structure could disappear between the entry to this routine and | |
202 | * a HOLD operation if not locked. | |
203 | */ | |
e2494582 | 204 | mutex_lock(&xfs_Gqm_lock); |
1da177e4 | 205 | |
bdfb0430 | 206 | if (!xfs_Gqm) { |
1da177e4 | 207 | xfs_Gqm = xfs_Gqm_init(); |
38e712ab JL |
208 | if (!xfs_Gqm) { |
209 | mutex_unlock(&xfs_Gqm_lock); | |
bdfb0430 | 210 | return ENOMEM; |
38e712ab | 211 | } |
bdfb0430 CH |
212 | } |
213 | ||
1da177e4 LT |
214 | /* |
215 | * We can keep a list of all filesystems with quotas mounted for | |
216 | * debugging and statistical purposes, but ... | |
217 | * Just take a reference and get out. | |
218 | */ | |
e2494582 CH |
219 | xfs_Gqm->qm_nrefs++; |
220 | mutex_unlock(&xfs_Gqm_lock); | |
1da177e4 LT |
221 | |
222 | return 0; | |
223 | } | |
224 | ||
225 | ||
226 | /* | |
227 | * Release the reference that a filesystem took at mount time, | |
228 | * so that we know when we need to destroy the entire quota manager. | |
229 | */ | |
230 | /* ARGSUSED */ | |
231 | STATIC void | |
232 | xfs_qm_rele_quotafs_ref( | |
233 | struct xfs_mount *mp) | |
234 | { | |
3a8406f6 | 235 | xfs_dquot_t *dqp, *n; |
1da177e4 LT |
236 | |
237 | ASSERT(xfs_Gqm); | |
238 | ASSERT(xfs_Gqm->qm_nrefs > 0); | |
239 | ||
240 | /* | |
241 | * Go thru the freelist and destroy all inactive dquots. | |
242 | */ | |
3a8406f6 | 243 | mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 | 244 | |
3a8406f6 | 245 | list_for_each_entry_safe(dqp, n, &xfs_Gqm->qm_dqfrlist, q_freelist) { |
1da177e4 | 246 | xfs_dqlock(dqp); |
1da177e4 LT |
247 | if (dqp->dq_flags & XFS_DQ_INACTIVE) { |
248 | ASSERT(dqp->q_mount == NULL); | |
249 | ASSERT(! XFS_DQ_IS_DIRTY(dqp)); | |
e6a81f13 | 250 | ASSERT(list_empty(&dqp->q_hashlist)); |
3a25404b | 251 | ASSERT(list_empty(&dqp->q_mplist)); |
3a8406f6 DC |
252 | list_del_init(&dqp->q_freelist); |
253 | xfs_Gqm->qm_dqfrlist_cnt--; | |
1da177e4 LT |
254 | xfs_dqunlock(dqp); |
255 | xfs_qm_dqdestroy(dqp); | |
256 | } else { | |
257 | xfs_dqunlock(dqp); | |
258 | } | |
1da177e4 | 259 | } |
3a8406f6 | 260 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 LT |
261 | |
262 | /* | |
263 | * Destroy the entire XQM. If somebody mounts with quotaon, this'll | |
264 | * be restarted. | |
265 | */ | |
e2494582 CH |
266 | mutex_lock(&xfs_Gqm_lock); |
267 | if (--xfs_Gqm->qm_nrefs == 0) { | |
1da177e4 LT |
268 | xfs_qm_destroy(xfs_Gqm); |
269 | xfs_Gqm = NULL; | |
270 | } | |
e2494582 | 271 | mutex_unlock(&xfs_Gqm_lock); |
1da177e4 LT |
272 | } |
273 | ||
1da177e4 LT |
274 | /* |
275 | * Just destroy the quotainfo structure. | |
276 | */ | |
277 | void | |
7d095257 CH |
278 | xfs_qm_unmount( |
279 | struct xfs_mount *mp) | |
1da177e4 | 280 | { |
7d095257 | 281 | if (mp->m_quotainfo) { |
8112e9dc | 282 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 | 283 | xfs_qm_destroy_quotainfo(mp); |
7d095257 | 284 | } |
1da177e4 LT |
285 | } |
286 | ||
287 | ||
288 | /* | |
289 | * This is called from xfs_mountfs to start quotas and initialize all | |
290 | * necessary data structures like quotainfo. This is also responsible for | |
291 | * running a quotacheck as necessary. We are guaranteed that the superblock | |
292 | * is consistently read in at this point. | |
53aa7915 DC |
293 | * |
294 | * If we fail here, the mount will continue with quota turned off. We don't | |
295 | * need to inidicate success or failure at all. | |
1da177e4 | 296 | */ |
53aa7915 | 297 | void |
1da177e4 | 298 | xfs_qm_mount_quotas( |
4249023a | 299 | xfs_mount_t *mp) |
1da177e4 | 300 | { |
1da177e4 LT |
301 | int error = 0; |
302 | uint sbf; | |
303 | ||
1da177e4 LT |
304 | /* |
305 | * If quotas on realtime volumes is not supported, we disable | |
306 | * quotas immediately. | |
307 | */ | |
308 | if (mp->m_sb.sb_rextents) { | |
0b932ccc | 309 | xfs_notice(mp, "Cannot turn on quotas for realtime filesystem"); |
1da177e4 LT |
310 | mp->m_qflags = 0; |
311 | goto write_changes; | |
312 | } | |
313 | ||
1da177e4 | 314 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
155ffd07 | 315 | |
1da177e4 LT |
316 | /* |
317 | * Allocate the quotainfo structure inside the mount struct, and | |
318 | * create quotainode(s), and change/rev superblock if necessary. | |
319 | */ | |
53aa7915 DC |
320 | error = xfs_qm_init_quotainfo(mp); |
321 | if (error) { | |
1da177e4 LT |
322 | /* |
323 | * We must turn off quotas. | |
324 | */ | |
325 | ASSERT(mp->m_quotainfo == NULL); | |
326 | mp->m_qflags = 0; | |
327 | goto write_changes; | |
328 | } | |
329 | /* | |
330 | * If any of the quotas are not consistent, do a quotacheck. | |
331 | */ | |
4249023a | 332 | if (XFS_QM_NEED_QUOTACHECK(mp)) { |
53aa7915 DC |
333 | error = xfs_qm_quotacheck(mp); |
334 | if (error) { | |
335 | /* Quotacheck failed and disabled quotas. */ | |
336 | return; | |
1da177e4 | 337 | } |
1da177e4 | 338 | } |
646d5bda DD |
339 | /* |
340 | * If one type of quotas is off, then it will lose its | |
341 | * quotachecked status, since we won't be doing accounting for | |
342 | * that type anymore. | |
343 | */ | |
53aa7915 | 344 | if (!XFS_IS_UQUOTA_ON(mp)) |
646d5bda | 345 | mp->m_qflags &= ~XFS_UQUOTA_CHKD; |
53aa7915 | 346 | if (!(XFS_IS_GQUOTA_ON(mp) || XFS_IS_PQUOTA_ON(mp))) |
646d5bda | 347 | mp->m_qflags &= ~XFS_OQUOTA_CHKD; |
155ffd07 | 348 | |
1da177e4 LT |
349 | write_changes: |
350 | /* | |
3685c2a1 | 351 | * We actually don't have to acquire the m_sb_lock at all. |
1da177e4 LT |
352 | * This can only be called from mount, and that's single threaded. XXX |
353 | */ | |
3685c2a1 | 354 | spin_lock(&mp->m_sb_lock); |
1da177e4 LT |
355 | sbf = mp->m_sb.sb_qflags; |
356 | mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL; | |
3685c2a1 | 357 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
358 | |
359 | if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { | |
360 | if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) { | |
361 | /* | |
362 | * We could only have been turning quotas off. | |
363 | * We aren't in very good shape actually because | |
364 | * the incore structures are convinced that quotas are | |
365 | * off, but the on disk superblock doesn't know that ! | |
366 | */ | |
367 | ASSERT(!(XFS_IS_QUOTA_RUNNING(mp))); | |
53487786 DC |
368 | xfs_alert(mp, "%s: Superblock update failed!", |
369 | __func__); | |
1da177e4 LT |
370 | } |
371 | } | |
372 | ||
373 | if (error) { | |
53487786 | 374 | xfs_warn(mp, "Failed to initialize disk quotas."); |
7d095257 | 375 | return; |
1da177e4 | 376 | } |
1da177e4 LT |
377 | } |
378 | ||
379 | /* | |
380 | * Called from the vfsops layer. | |
381 | */ | |
e57481dc | 382 | void |
1da177e4 LT |
383 | xfs_qm_unmount_quotas( |
384 | xfs_mount_t *mp) | |
385 | { | |
1da177e4 LT |
386 | /* |
387 | * Release the dquots that root inode, et al might be holding, | |
388 | * before we flush quotas and blow away the quotainfo structure. | |
389 | */ | |
390 | ASSERT(mp->m_rootip); | |
391 | xfs_qm_dqdetach(mp->m_rootip); | |
392 | if (mp->m_rbmip) | |
393 | xfs_qm_dqdetach(mp->m_rbmip); | |
394 | if (mp->m_rsumip) | |
395 | xfs_qm_dqdetach(mp->m_rsumip); | |
396 | ||
397 | /* | |
e57481dc | 398 | * Release the quota inodes. |
1da177e4 | 399 | */ |
1da177e4 | 400 | if (mp->m_quotainfo) { |
e57481dc CH |
401 | if (mp->m_quotainfo->qi_uquotaip) { |
402 | IRELE(mp->m_quotainfo->qi_uquotaip); | |
403 | mp->m_quotainfo->qi_uquotaip = NULL; | |
1da177e4 | 404 | } |
e57481dc CH |
405 | if (mp->m_quotainfo->qi_gquotaip) { |
406 | IRELE(mp->m_quotainfo->qi_gquotaip); | |
407 | mp->m_quotainfo->qi_gquotaip = NULL; | |
1da177e4 LT |
408 | } |
409 | } | |
1da177e4 LT |
410 | } |
411 | ||
412 | /* | |
413 | * Flush all dquots of the given file system to disk. The dquots are | |
414 | * _not_ purged from memory here, just their data written to disk. | |
415 | */ | |
ba0f32d4 | 416 | STATIC int |
1da177e4 | 417 | xfs_qm_dqflush_all( |
8a7b8a89 CH |
418 | struct xfs_mount *mp, |
419 | int sync_mode) | |
1da177e4 | 420 | { |
8a7b8a89 CH |
421 | struct xfs_quotainfo *q = mp->m_quotainfo; |
422 | int recl; | |
423 | struct xfs_dquot *dqp; | |
8a7b8a89 | 424 | int error; |
1da177e4 | 425 | |
8a7b8a89 | 426 | if (!q) |
014c2544 | 427 | return 0; |
1da177e4 | 428 | again: |
8a7b8a89 CH |
429 | mutex_lock(&q->qi_dqlist_lock); |
430 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 LT |
431 | xfs_dqlock(dqp); |
432 | if (! XFS_DQ_IS_DIRTY(dqp)) { | |
433 | xfs_dqunlock(dqp); | |
434 | continue; | |
435 | } | |
0b1b213f | 436 | |
1da177e4 | 437 | /* XXX a sentinel would be better */ |
8a7b8a89 | 438 | recl = q->qi_dqreclaims; |
e1f49cf2 | 439 | if (!xfs_dqflock_nowait(dqp)) { |
1da177e4 LT |
440 | /* |
441 | * If we can't grab the flush lock then check | |
442 | * to see if the dquot has been flushed delayed | |
443 | * write. If so, grab its buffer and send it | |
444 | * out immediately. We'll be able to acquire | |
445 | * the flush lock when the I/O completes. | |
446 | */ | |
447 | xfs_qm_dqflock_pushbuf_wait(dqp); | |
448 | } | |
449 | /* | |
450 | * Let go of the mplist lock. We don't want to hold it | |
451 | * across a disk write. | |
452 | */ | |
8a7b8a89 | 453 | mutex_unlock(&q->qi_dqlist_lock); |
20026d92 | 454 | error = xfs_qm_dqflush(dqp, sync_mode); |
1da177e4 LT |
455 | xfs_dqunlock(dqp); |
456 | if (error) | |
014c2544 | 457 | return error; |
1da177e4 | 458 | |
8a7b8a89 CH |
459 | mutex_lock(&q->qi_dqlist_lock); |
460 | if (recl != q->qi_dqreclaims) { | |
461 | mutex_unlock(&q->qi_dqlist_lock); | |
1da177e4 LT |
462 | /* XXX restart limit */ |
463 | goto again; | |
464 | } | |
465 | } | |
466 | ||
8a7b8a89 | 467 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 | 468 | /* return ! busy */ |
014c2544 | 469 | return 0; |
1da177e4 LT |
470 | } |
471 | /* | |
472 | * Release the group dquot pointers the user dquots may be | |
473 | * carrying around as a hint. mplist is locked on entry and exit. | |
474 | */ | |
475 | STATIC void | |
476 | xfs_qm_detach_gdquots( | |
8a7b8a89 | 477 | struct xfs_mount *mp) |
1da177e4 | 478 | { |
8a7b8a89 CH |
479 | struct xfs_quotainfo *q = mp->m_quotainfo; |
480 | struct xfs_dquot *dqp, *gdqp; | |
481 | int nrecl; | |
1da177e4 LT |
482 | |
483 | again: | |
8a7b8a89 CH |
484 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
485 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 LT |
486 | xfs_dqlock(dqp); |
487 | if ((gdqp = dqp->q_gdquot)) { | |
488 | xfs_dqlock(gdqp); | |
489 | dqp->q_gdquot = NULL; | |
490 | } | |
491 | xfs_dqunlock(dqp); | |
492 | ||
493 | if (gdqp) { | |
494 | /* | |
495 | * Can't hold the mplist lock across a dqput. | |
496 | * XXXmust convert to marker based iterations here. | |
497 | */ | |
8a7b8a89 CH |
498 | nrecl = q->qi_dqreclaims; |
499 | mutex_unlock(&q->qi_dqlist_lock); | |
1da177e4 LT |
500 | xfs_qm_dqput(gdqp); |
501 | ||
8a7b8a89 CH |
502 | mutex_lock(&q->qi_dqlist_lock); |
503 | if (nrecl != q->qi_dqreclaims) | |
1da177e4 LT |
504 | goto again; |
505 | } | |
1da177e4 LT |
506 | } |
507 | } | |
508 | ||
509 | /* | |
510 | * Go through all the incore dquots of this file system and take them | |
511 | * off the mplist and hashlist, if the dquot type matches the dqtype | |
512 | * parameter. This is used when turning off quota accounting for | |
513 | * users and/or groups, as well as when the filesystem is unmounting. | |
514 | */ | |
515 | STATIC int | |
516 | xfs_qm_dqpurge_int( | |
8a7b8a89 CH |
517 | struct xfs_mount *mp, |
518 | uint flags) | |
1da177e4 | 519 | { |
8a7b8a89 CH |
520 | struct xfs_quotainfo *q = mp->m_quotainfo; |
521 | struct xfs_dquot *dqp, *n; | |
522 | uint dqtype; | |
523 | int nrecl; | |
524 | int nmisses; | |
1da177e4 | 525 | |
8a7b8a89 | 526 | if (!q) |
014c2544 | 527 | return 0; |
1da177e4 LT |
528 | |
529 | dqtype = (flags & XFS_QMOPT_UQUOTA) ? XFS_DQ_USER : 0; | |
c8ad20ff | 530 | dqtype |= (flags & XFS_QMOPT_PQUOTA) ? XFS_DQ_PROJ : 0; |
1da177e4 LT |
531 | dqtype |= (flags & XFS_QMOPT_GQUOTA) ? XFS_DQ_GROUP : 0; |
532 | ||
8a7b8a89 | 533 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
534 | |
535 | /* | |
536 | * In the first pass through all incore dquots of this filesystem, | |
537 | * we release the group dquot pointers the user dquots may be | |
538 | * carrying around as a hint. We need to do this irrespective of | |
539 | * what's being turned off. | |
540 | */ | |
541 | xfs_qm_detach_gdquots(mp); | |
542 | ||
543 | again: | |
544 | nmisses = 0; | |
8a7b8a89 | 545 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
1da177e4 LT |
546 | /* |
547 | * Try to get rid of all of the unwanted dquots. The idea is to | |
548 | * get them off mplist and hashlist, but leave them on freelist. | |
549 | */ | |
8a7b8a89 | 550 | list_for_each_entry_safe(dqp, n, &q->qi_dqlist, q_mplist) { |
1da177e4 LT |
551 | /* |
552 | * It's OK to look at the type without taking dqlock here. | |
553 | * We're holding the mplist lock here, and that's needed for | |
554 | * a dqreclaim. | |
555 | */ | |
3a25404b | 556 | if ((dqp->dq_flags & dqtype) == 0) |
1da177e4 | 557 | continue; |
1da177e4 | 558 | |
c9a192dc | 559 | if (!mutex_trylock(&dqp->q_hash->qh_lock)) { |
8a7b8a89 CH |
560 | nrecl = q->qi_dqreclaims; |
561 | mutex_unlock(&q->qi_dqlist_lock); | |
c9a192dc | 562 | mutex_lock(&dqp->q_hash->qh_lock); |
8a7b8a89 | 563 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
564 | |
565 | /* | |
566 | * XXXTheoretically, we can get into a very long | |
567 | * ping pong game here. | |
568 | * No one can be adding dquots to the mplist at | |
569 | * this point, but somebody might be taking things off. | |
570 | */ | |
8a7b8a89 | 571 | if (nrecl != q->qi_dqreclaims) { |
c9a192dc | 572 | mutex_unlock(&dqp->q_hash->qh_lock); |
1da177e4 LT |
573 | goto again; |
574 | } | |
575 | } | |
576 | ||
577 | /* | |
578 | * Take the dquot off the mplist and hashlist. It may remain on | |
579 | * freelist in INACTIVE state. | |
580 | */ | |
4f0e8a98 | 581 | nmisses += xfs_qm_dqpurge(dqp); |
1da177e4 | 582 | } |
8a7b8a89 | 583 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 LT |
584 | return nmisses; |
585 | } | |
586 | ||
587 | int | |
588 | xfs_qm_dqpurge_all( | |
589 | xfs_mount_t *mp, | |
590 | uint flags) | |
591 | { | |
592 | int ndquots; | |
593 | ||
594 | /* | |
595 | * Purge the dquot cache. | |
596 | * None of the dquots should really be busy at this point. | |
597 | */ | |
598 | if (mp->m_quotainfo) { | |
599 | while ((ndquots = xfs_qm_dqpurge_int(mp, flags))) { | |
600 | delay(ndquots * 10); | |
601 | } | |
602 | } | |
603 | return 0; | |
604 | } | |
605 | ||
606 | STATIC int | |
607 | xfs_qm_dqattach_one( | |
608 | xfs_inode_t *ip, | |
609 | xfs_dqid_t id, | |
610 | uint type, | |
611 | uint doalloc, | |
1da177e4 LT |
612 | xfs_dquot_t *udqhint, /* hint */ |
613 | xfs_dquot_t **IO_idqpp) | |
614 | { | |
615 | xfs_dquot_t *dqp; | |
616 | int error; | |
617 | ||
579aa9ca | 618 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 619 | error = 0; |
8e9b6e7f | 620 | |
1da177e4 LT |
621 | /* |
622 | * See if we already have it in the inode itself. IO_idqpp is | |
623 | * &i_udquot or &i_gdquot. This made the code look weird, but | |
624 | * made the logic a lot simpler. | |
625 | */ | |
8e9b6e7f CH |
626 | dqp = *IO_idqpp; |
627 | if (dqp) { | |
0b1b213f | 628 | trace_xfs_dqattach_found(dqp); |
8e9b6e7f | 629 | return 0; |
1da177e4 LT |
630 | } |
631 | ||
632 | /* | |
633 | * udqhint is the i_udquot field in inode, and is non-NULL only | |
c8ad20ff | 634 | * when the type arg is group/project. Its purpose is to save a |
1da177e4 LT |
635 | * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside |
636 | * the user dquot. | |
637 | */ | |
8e9b6e7f CH |
638 | if (udqhint) { |
639 | ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); | |
1da177e4 LT |
640 | xfs_dqlock(udqhint); |
641 | ||
8e9b6e7f CH |
642 | /* |
643 | * No need to take dqlock to look at the id. | |
644 | * | |
645 | * The ID can't change until it gets reclaimed, and it won't | |
646 | * be reclaimed as long as we have a ref from inode and we | |
647 | * hold the ilock. | |
648 | */ | |
649 | dqp = udqhint->q_gdquot; | |
650 | if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) { | |
651 | xfs_dqlock(dqp); | |
652 | XFS_DQHOLD(dqp); | |
653 | ASSERT(*IO_idqpp == NULL); | |
654 | *IO_idqpp = dqp; | |
655 | ||
1da177e4 LT |
656 | xfs_dqunlock(dqp); |
657 | xfs_dqunlock(udqhint); | |
8e9b6e7f | 658 | return 0; |
1da177e4 | 659 | } |
8e9b6e7f CH |
660 | |
661 | /* | |
662 | * We can't hold a dquot lock when we call the dqget code. | |
663 | * We'll deadlock in no time, because of (not conforming to) | |
664 | * lock ordering - the inodelock comes before any dquot lock, | |
665 | * and we may drop and reacquire the ilock in xfs_qm_dqget(). | |
666 | */ | |
1da177e4 | 667 | xfs_dqunlock(udqhint); |
8e9b6e7f CH |
668 | } |
669 | ||
1da177e4 LT |
670 | /* |
671 | * Find the dquot from somewhere. This bumps the | |
672 | * reference count of dquot and returns it locked. | |
673 | * This can return ENOENT if dquot didn't exist on | |
674 | * disk and we didn't ask it to allocate; | |
675 | * ESRCH if quotas got turned off suddenly. | |
676 | */ | |
8e9b6e7f CH |
677 | error = xfs_qm_dqget(ip->i_mount, ip, id, type, XFS_QMOPT_DOWARN, &dqp); |
678 | if (error) | |
679 | return error; | |
1da177e4 | 680 | |
0b1b213f | 681 | trace_xfs_dqattach_get(dqp); |
8e9b6e7f | 682 | |
1da177e4 LT |
683 | /* |
684 | * dqget may have dropped and re-acquired the ilock, but it guarantees | |
685 | * that the dquot returned is the one that should go in the inode. | |
686 | */ | |
687 | *IO_idqpp = dqp; | |
8e9b6e7f CH |
688 | xfs_dqunlock(dqp); |
689 | return 0; | |
1da177e4 LT |
690 | } |
691 | ||
692 | ||
693 | /* | |
694 | * Given a udquot and gdquot, attach a ptr to the group dquot in the | |
695 | * udquot as a hint for future lookups. The idea sounds simple, but the | |
696 | * execution isn't, because the udquot might have a group dquot attached | |
c41564b5 | 697 | * already and getting rid of that gets us into lock ordering constraints. |
1da177e4 LT |
698 | * The process is complicated more by the fact that the dquots may or may not |
699 | * be locked on entry. | |
700 | */ | |
701 | STATIC void | |
702 | xfs_qm_dqattach_grouphint( | |
703 | xfs_dquot_t *udq, | |
8e9b6e7f | 704 | xfs_dquot_t *gdq) |
1da177e4 LT |
705 | { |
706 | xfs_dquot_t *tmp; | |
707 | ||
8e9b6e7f | 708 | xfs_dqlock(udq); |
1da177e4 LT |
709 | |
710 | if ((tmp = udq->q_gdquot)) { | |
711 | if (tmp == gdq) { | |
8e9b6e7f | 712 | xfs_dqunlock(udq); |
1da177e4 LT |
713 | return; |
714 | } | |
715 | ||
716 | udq->q_gdquot = NULL; | |
717 | /* | |
718 | * We can't keep any dqlocks when calling dqrele, | |
719 | * because the freelist lock comes before dqlocks. | |
720 | */ | |
721 | xfs_dqunlock(udq); | |
1da177e4 LT |
722 | /* |
723 | * we took a hard reference once upon a time in dqget, | |
724 | * so give it back when the udquot no longer points at it | |
725 | * dqput() does the unlocking of the dquot. | |
726 | */ | |
727 | xfs_qm_dqrele(tmp); | |
728 | ||
729 | xfs_dqlock(udq); | |
730 | xfs_dqlock(gdq); | |
731 | ||
732 | } else { | |
733 | ASSERT(XFS_DQ_IS_LOCKED(udq)); | |
8e9b6e7f | 734 | xfs_dqlock(gdq); |
1da177e4 LT |
735 | } |
736 | ||
737 | ASSERT(XFS_DQ_IS_LOCKED(udq)); | |
738 | ASSERT(XFS_DQ_IS_LOCKED(gdq)); | |
739 | /* | |
740 | * Somebody could have attached a gdquot here, | |
741 | * when we dropped the uqlock. If so, just do nothing. | |
742 | */ | |
743 | if (udq->q_gdquot == NULL) { | |
744 | XFS_DQHOLD(gdq); | |
745 | udq->q_gdquot = gdq; | |
746 | } | |
8e9b6e7f CH |
747 | |
748 | xfs_dqunlock(gdq); | |
749 | xfs_dqunlock(udq); | |
1da177e4 LT |
750 | } |
751 | ||
752 | ||
753 | /* | |
c8ad20ff NS |
754 | * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON |
755 | * into account. | |
1da177e4 | 756 | * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. |
1da177e4 LT |
757 | * Inode may get unlocked and relocked in here, and the caller must deal with |
758 | * the consequences. | |
759 | */ | |
760 | int | |
7d095257 | 761 | xfs_qm_dqattach_locked( |
1da177e4 LT |
762 | xfs_inode_t *ip, |
763 | uint flags) | |
764 | { | |
765 | xfs_mount_t *mp = ip->i_mount; | |
766 | uint nquotas = 0; | |
767 | int error = 0; | |
768 | ||
7d095257 CH |
769 | if (!XFS_IS_QUOTA_RUNNING(mp) || |
770 | !XFS_IS_QUOTA_ON(mp) || | |
771 | !XFS_NOT_DQATTACHED(mp, ip) || | |
772 | ip->i_ino == mp->m_sb.sb_uquotino || | |
773 | ip->i_ino == mp->m_sb.sb_gquotino) | |
014c2544 | 774 | return 0; |
1da177e4 | 775 | |
7d095257 | 776 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
777 | |
778 | if (XFS_IS_UQUOTA_ON(mp)) { | |
779 | error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, | |
780 | flags & XFS_QMOPT_DQALLOC, | |
1da177e4 LT |
781 | NULL, &ip->i_udquot); |
782 | if (error) | |
783 | goto done; | |
784 | nquotas++; | |
785 | } | |
579aa9ca CH |
786 | |
787 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); | |
c8ad20ff NS |
788 | if (XFS_IS_OQUOTA_ON(mp)) { |
789 | error = XFS_IS_GQUOTA_ON(mp) ? | |
790 | xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, | |
791 | flags & XFS_QMOPT_DQALLOC, | |
c8ad20ff | 792 | ip->i_udquot, &ip->i_gdquot) : |
6743099c | 793 | xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ, |
1da177e4 | 794 | flags & XFS_QMOPT_DQALLOC, |
1da177e4 LT |
795 | ip->i_udquot, &ip->i_gdquot); |
796 | /* | |
797 | * Don't worry about the udquot that we may have | |
798 | * attached above. It'll get detached, if not already. | |
799 | */ | |
800 | if (error) | |
801 | goto done; | |
802 | nquotas++; | |
803 | } | |
804 | ||
805 | /* | |
806 | * Attach this group quota to the user quota as a hint. | |
807 | * This WON'T, in general, result in a thrash. | |
808 | */ | |
809 | if (nquotas == 2) { | |
579aa9ca | 810 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
811 | ASSERT(ip->i_udquot); |
812 | ASSERT(ip->i_gdquot); | |
813 | ||
814 | /* | |
815 | * We may or may not have the i_udquot locked at this point, | |
816 | * but this check is OK since we don't depend on the i_gdquot to | |
817 | * be accurate 100% all the time. It is just a hint, and this | |
818 | * will succeed in general. | |
819 | */ | |
820 | if (ip->i_udquot->q_gdquot == ip->i_gdquot) | |
821 | goto done; | |
822 | /* | |
823 | * Attach i_gdquot to the gdquot hint inside the i_udquot. | |
824 | */ | |
8e9b6e7f | 825 | xfs_qm_dqattach_grouphint(ip->i_udquot, ip->i_gdquot); |
1da177e4 LT |
826 | } |
827 | ||
7d095257 | 828 | done: |
ea15ab3c CH |
829 | #ifdef DEBUG |
830 | if (!error) { | |
1da177e4 LT |
831 | if (XFS_IS_UQUOTA_ON(mp)) |
832 | ASSERT(ip->i_udquot); | |
c8ad20ff | 833 | if (XFS_IS_OQUOTA_ON(mp)) |
1da177e4 LT |
834 | ASSERT(ip->i_gdquot); |
835 | } | |
7d095257 | 836 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 837 | #endif |
7d095257 CH |
838 | return error; |
839 | } | |
1da177e4 | 840 | |
7d095257 CH |
841 | int |
842 | xfs_qm_dqattach( | |
843 | struct xfs_inode *ip, | |
844 | uint flags) | |
845 | { | |
846 | int error; | |
847 | ||
848 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
849 | error = xfs_qm_dqattach_locked(ip, flags); | |
850 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1da177e4 | 851 | |
014c2544 | 852 | return error; |
1da177e4 LT |
853 | } |
854 | ||
855 | /* | |
856 | * Release dquots (and their references) if any. | |
857 | * The inode should be locked EXCL except when this's called by | |
858 | * xfs_ireclaim. | |
859 | */ | |
860 | void | |
861 | xfs_qm_dqdetach( | |
862 | xfs_inode_t *ip) | |
863 | { | |
864 | if (!(ip->i_udquot || ip->i_gdquot)) | |
865 | return; | |
866 | ||
0b1b213f CH |
867 | trace_xfs_dquot_dqdetach(ip); |
868 | ||
1da177e4 LT |
869 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_uquotino); |
870 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_gquotino); | |
1da177e4 LT |
871 | if (ip->i_udquot) { |
872 | xfs_qm_dqrele(ip->i_udquot); | |
873 | ip->i_udquot = NULL; | |
874 | } | |
875 | if (ip->i_gdquot) { | |
876 | xfs_qm_dqrele(ip->i_gdquot); | |
877 | ip->i_gdquot = NULL; | |
878 | } | |
879 | } | |
880 | ||
1da177e4 LT |
881 | int |
882 | xfs_qm_sync( | |
8a7b8a89 CH |
883 | struct xfs_mount *mp, |
884 | int flags) | |
1da177e4 | 885 | { |
8a7b8a89 CH |
886 | struct xfs_quotainfo *q = mp->m_quotainfo; |
887 | int recl, restarts; | |
888 | struct xfs_dquot *dqp; | |
889 | int error; | |
1da177e4 | 890 | |
7d095257 | 891 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
d757762b DD |
892 | return 0; |
893 | ||
1da177e4 | 894 | restarts = 0; |
1da177e4 LT |
895 | |
896 | again: | |
8a7b8a89 | 897 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
898 | /* |
899 | * dqpurge_all() also takes the mplist lock and iterate thru all dquots | |
900 | * in quotaoff. However, if the QUOTA_ACTIVE bits are not cleared | |
901 | * when we have the mplist lock, we know that dquots will be consistent | |
902 | * as long as we have it locked. | |
903 | */ | |
3a25404b | 904 | if (!XFS_IS_QUOTA_ON(mp)) { |
8a7b8a89 | 905 | mutex_unlock(&q->qi_dqlist_lock); |
014c2544 | 906 | return 0; |
1da177e4 | 907 | } |
8a7b8a89 CH |
908 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
909 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 LT |
910 | /* |
911 | * If this is vfs_sync calling, then skip the dquots that | |
912 | * don't 'seem' to be dirty. ie. don't acquire dqlock. | |
913 | * This is very similar to what xfs_sync does with inodes. | |
914 | */ | |
8b5403a6 CH |
915 | if (flags & SYNC_TRYLOCK) { |
916 | if (!XFS_DQ_IS_DIRTY(dqp)) | |
1da177e4 | 917 | continue; |
8b5403a6 | 918 | if (!xfs_qm_dqlock_nowait(dqp)) |
1da177e4 LT |
919 | continue; |
920 | } else { | |
921 | xfs_dqlock(dqp); | |
922 | } | |
923 | ||
924 | /* | |
925 | * Now, find out for sure if this dquot is dirty or not. | |
926 | */ | |
927 | if (! XFS_DQ_IS_DIRTY(dqp)) { | |
928 | xfs_dqunlock(dqp); | |
929 | continue; | |
930 | } | |
931 | ||
932 | /* XXX a sentinel would be better */ | |
8a7b8a89 | 933 | recl = q->qi_dqreclaims; |
e1f49cf2 | 934 | if (!xfs_dqflock_nowait(dqp)) { |
8b5403a6 | 935 | if (flags & SYNC_TRYLOCK) { |
1da177e4 LT |
936 | xfs_dqunlock(dqp); |
937 | continue; | |
938 | } | |
939 | /* | |
940 | * If we can't grab the flush lock then if the caller | |
c41564b5 | 941 | * really wanted us to give this our best shot, so |
1da177e4 LT |
942 | * see if we can give a push to the buffer before we wait |
943 | * on the flush lock. At this point, we know that | |
c41564b5 | 944 | * even though the dquot is being flushed, |
1da177e4 LT |
945 | * it has (new) dirty data. |
946 | */ | |
947 | xfs_qm_dqflock_pushbuf_wait(dqp); | |
948 | } | |
949 | /* | |
950 | * Let go of the mplist lock. We don't want to hold it | |
951 | * across a disk write | |
952 | */ | |
8a7b8a89 | 953 | mutex_unlock(&q->qi_dqlist_lock); |
20026d92 | 954 | error = xfs_qm_dqflush(dqp, flags); |
1da177e4 LT |
955 | xfs_dqunlock(dqp); |
956 | if (error && XFS_FORCED_SHUTDOWN(mp)) | |
014c2544 | 957 | return 0; /* Need to prevent umount failure */ |
1da177e4 | 958 | else if (error) |
014c2544 | 959 | return error; |
1da177e4 | 960 | |
8a7b8a89 CH |
961 | mutex_lock(&q->qi_dqlist_lock); |
962 | if (recl != q->qi_dqreclaims) { | |
1da177e4 LT |
963 | if (++restarts >= XFS_QM_SYNC_MAX_RESTARTS) |
964 | break; | |
965 | ||
8a7b8a89 | 966 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 LT |
967 | goto again; |
968 | } | |
969 | } | |
970 | ||
8a7b8a89 | 971 | mutex_unlock(&q->qi_dqlist_lock); |
014c2544 | 972 | return 0; |
1da177e4 LT |
973 | } |
974 | ||
a4edd1da CH |
975 | /* |
976 | * The hash chains and the mplist use the same xfs_dqhash structure as | |
977 | * their list head, but we can take the mplist qh_lock and one of the | |
978 | * hash qh_locks at the same time without any problem as they aren't | |
979 | * related. | |
980 | */ | |
981 | static struct lock_class_key xfs_quota_mplist_class; | |
1da177e4 LT |
982 | |
983 | /* | |
984 | * This initializes all the quota information that's kept in the | |
985 | * mount structure | |
986 | */ | |
ba0f32d4 | 987 | STATIC int |
1da177e4 LT |
988 | xfs_qm_init_quotainfo( |
989 | xfs_mount_t *mp) | |
990 | { | |
991 | xfs_quotainfo_t *qinf; | |
992 | int error; | |
993 | xfs_dquot_t *dqp; | |
994 | ||
995 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
996 | ||
997 | /* | |
998 | * Tell XQM that we exist as soon as possible. | |
999 | */ | |
1000 | if ((error = xfs_qm_hold_quotafs_ref(mp))) { | |
014c2544 | 1001 | return error; |
1da177e4 LT |
1002 | } |
1003 | ||
1004 | qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); | |
1005 | ||
1006 | /* | |
1007 | * See if quotainodes are setup, and if not, allocate them, | |
1008 | * and change the superblock accordingly. | |
1009 | */ | |
1010 | if ((error = xfs_qm_init_quotainos(mp))) { | |
f0e2d93c | 1011 | kmem_free(qinf); |
1da177e4 | 1012 | mp->m_quotainfo = NULL; |
014c2544 | 1013 | return error; |
1da177e4 LT |
1014 | } |
1015 | ||
3a25404b DC |
1016 | INIT_LIST_HEAD(&qinf->qi_dqlist); |
1017 | mutex_init(&qinf->qi_dqlist_lock); | |
1018 | lockdep_set_class(&qinf->qi_dqlist_lock, &xfs_quota_mplist_class); | |
a4edd1da | 1019 | |
1da177e4 LT |
1020 | qinf->qi_dqreclaims = 0; |
1021 | ||
1022 | /* mutex used to serialize quotaoffs */ | |
794ee1ba | 1023 | mutex_init(&qinf->qi_quotaofflock); |
1da177e4 LT |
1024 | |
1025 | /* Precalc some constants */ | |
1026 | qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
1027 | ASSERT(qinf->qi_dqchunklen); | |
1028 | qinf->qi_dqperchunk = BBTOB(qinf->qi_dqchunklen); | |
1029 | do_div(qinf->qi_dqperchunk, sizeof(xfs_dqblk_t)); | |
1030 | ||
1031 | mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); | |
1032 | ||
1033 | /* | |
1034 | * We try to get the limits from the superuser's limits fields. | |
1035 | * This is quite hacky, but it is standard quota practice. | |
1036 | * We look at the USR dquot with id == 0 first, but if user quotas | |
1037 | * are not enabled we goto the GRP dquot with id == 0. | |
1038 | * We don't really care to keep separate default limits for user | |
1039 | * and group quotas, at least not at this point. | |
1040 | */ | |
1041 | error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)0, | |
c8ad20ff NS |
1042 | XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : |
1043 | (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : | |
1044 | XFS_DQ_PROJ), | |
1da177e4 LT |
1045 | XFS_QMOPT_DQSUSER|XFS_QMOPT_DOWARN, |
1046 | &dqp); | |
1047 | if (! error) { | |
1048 | xfs_disk_dquot_t *ddqp = &dqp->q_core; | |
1049 | ||
1050 | /* | |
1051 | * The warnings and timers set the grace period given to | |
1052 | * a user or group before he or she can not perform any | |
1053 | * more writing. If it is zero, a default is used. | |
1054 | */ | |
1149d96a CH |
1055 | qinf->qi_btimelimit = ddqp->d_btimer ? |
1056 | be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; | |
1057 | qinf->qi_itimelimit = ddqp->d_itimer ? | |
1058 | be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; | |
1059 | qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? | |
1060 | be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; | |
1061 | qinf->qi_bwarnlimit = ddqp->d_bwarns ? | |
1062 | be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; | |
1063 | qinf->qi_iwarnlimit = ddqp->d_iwarns ? | |
1064 | be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; | |
1065 | qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? | |
1066 | be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; | |
1067 | qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); | |
1068 | qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); | |
1069 | qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); | |
1070 | qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); | |
1071 | qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); | |
1072 | qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); | |
1da177e4 LT |
1073 | |
1074 | /* | |
1075 | * We sent the XFS_QMOPT_DQSUSER flag to dqget because | |
1076 | * we don't want this dquot cached. We haven't done a | |
1077 | * quotacheck yet, and quotacheck doesn't like incore dquots. | |
1078 | */ | |
1079 | xfs_qm_dqdestroy(dqp); | |
1080 | } else { | |
1081 | qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; | |
1082 | qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; | |
1083 | qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; | |
1084 | qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; | |
1085 | qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; | |
06d10dd9 | 1086 | qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; |
1da177e4 LT |
1087 | } |
1088 | ||
014c2544 | 1089 | return 0; |
1da177e4 LT |
1090 | } |
1091 | ||
1092 | ||
1093 | /* | |
1094 | * Gets called when unmounting a filesystem or when all quotas get | |
1095 | * turned off. | |
1096 | * This purges the quota inodes, destroys locks and frees itself. | |
1097 | */ | |
1098 | void | |
1099 | xfs_qm_destroy_quotainfo( | |
1100 | xfs_mount_t *mp) | |
1101 | { | |
1102 | xfs_quotainfo_t *qi; | |
1103 | ||
1104 | qi = mp->m_quotainfo; | |
1105 | ASSERT(qi != NULL); | |
1106 | ASSERT(xfs_Gqm != NULL); | |
1107 | ||
1108 | /* | |
1109 | * Release the reference that XQM kept, so that we know | |
1110 | * when the XQM structure should be freed. We cannot assume | |
1111 | * that xfs_Gqm is non-null after this point. | |
1112 | */ | |
1113 | xfs_qm_rele_quotafs_ref(mp); | |
1114 | ||
3a25404b DC |
1115 | ASSERT(list_empty(&qi->qi_dqlist)); |
1116 | mutex_destroy(&qi->qi_dqlist_lock); | |
1da177e4 LT |
1117 | |
1118 | if (qi->qi_uquotaip) { | |
26cc0021 | 1119 | IRELE(qi->qi_uquotaip); |
1da177e4 LT |
1120 | qi->qi_uquotaip = NULL; /* paranoia */ |
1121 | } | |
1122 | if (qi->qi_gquotaip) { | |
26cc0021 | 1123 | IRELE(qi->qi_gquotaip); |
1da177e4 LT |
1124 | qi->qi_gquotaip = NULL; |
1125 | } | |
1126 | mutex_destroy(&qi->qi_quotaofflock); | |
f0e2d93c | 1127 | kmem_free(qi); |
1da177e4 LT |
1128 | mp->m_quotainfo = NULL; |
1129 | } | |
1130 | ||
1131 | ||
1132 | ||
1133 | /* ------------------- PRIVATE STATIC FUNCTIONS ----------------------- */ | |
1134 | ||
1135 | /* ARGSUSED */ | |
1136 | STATIC void | |
1137 | xfs_qm_list_init( | |
1138 | xfs_dqlist_t *list, | |
1139 | char *str, | |
1140 | int n) | |
1141 | { | |
794ee1ba | 1142 | mutex_init(&list->qh_lock); |
e6a81f13 | 1143 | INIT_LIST_HEAD(&list->qh_list); |
1da177e4 LT |
1144 | list->qh_version = 0; |
1145 | list->qh_nelems = 0; | |
1146 | } | |
1147 | ||
1148 | STATIC void | |
1149 | xfs_qm_list_destroy( | |
1150 | xfs_dqlist_t *list) | |
1151 | { | |
1152 | mutex_destroy(&(list->qh_lock)); | |
1153 | } | |
1154 | ||
1da177e4 LT |
1155 | /* |
1156 | * Create an inode and return with a reference already taken, but unlocked | |
1157 | * This is how we create quota inodes | |
1158 | */ | |
1159 | STATIC int | |
1160 | xfs_qm_qino_alloc( | |
1161 | xfs_mount_t *mp, | |
1162 | xfs_inode_t **ip, | |
1163 | __int64_t sbfields, | |
1164 | uint flags) | |
1165 | { | |
1166 | xfs_trans_t *tp; | |
1167 | int error; | |
1da177e4 LT |
1168 | int committed; |
1169 | ||
061f7209 | 1170 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); |
1da177e4 LT |
1171 | if ((error = xfs_trans_reserve(tp, |
1172 | XFS_QM_QINOCREATE_SPACE_RES(mp), | |
1173 | XFS_CREATE_LOG_RES(mp), 0, | |
1174 | XFS_TRANS_PERM_LOG_RES, | |
1175 | XFS_CREATE_LOG_COUNT))) { | |
1176 | xfs_trans_cancel(tp, 0); | |
014c2544 | 1177 | return error; |
1da177e4 | 1178 | } |
1da177e4 | 1179 | |
6c77b0ea CH |
1180 | error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip, &committed); |
1181 | if (error) { | |
1da177e4 LT |
1182 | xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | |
1183 | XFS_TRANS_ABORT); | |
014c2544 | 1184 | return error; |
1da177e4 LT |
1185 | } |
1186 | ||
1da177e4 LT |
1187 | /* |
1188 | * Make the changes in the superblock, and log those too. | |
1189 | * sbfields arg may contain fields other than *QUOTINO; | |
1190 | * VERSIONNUM for example. | |
1191 | */ | |
3685c2a1 | 1192 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 1193 | if (flags & XFS_QMOPT_SBVERSION) { |
62118709 | 1194 | ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); |
1da177e4 LT |
1195 | ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
1196 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)) == | |
1197 | (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1198 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)); | |
1199 | ||
62118709 | 1200 | xfs_sb_version_addquota(&mp->m_sb); |
1da177e4 LT |
1201 | mp->m_sb.sb_uquotino = NULLFSINO; |
1202 | mp->m_sb.sb_gquotino = NULLFSINO; | |
1203 | ||
1204 | /* qflags will get updated _after_ quotacheck */ | |
1205 | mp->m_sb.sb_qflags = 0; | |
1da177e4 LT |
1206 | } |
1207 | if (flags & XFS_QMOPT_UQUOTA) | |
1208 | mp->m_sb.sb_uquotino = (*ip)->i_ino; | |
1209 | else | |
1210 | mp->m_sb.sb_gquotino = (*ip)->i_ino; | |
3685c2a1 | 1211 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
1212 | xfs_mod_sb(tp, sbfields); |
1213 | ||
1c72bf90 | 1214 | if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { |
53487786 | 1215 | xfs_alert(mp, "%s failed (error %d)!", __func__, error); |
014c2544 | 1216 | return error; |
1da177e4 | 1217 | } |
014c2544 | 1218 | return 0; |
1da177e4 LT |
1219 | } |
1220 | ||
1221 | ||
5b139738 | 1222 | STATIC void |
1da177e4 LT |
1223 | xfs_qm_reset_dqcounts( |
1224 | xfs_mount_t *mp, | |
1225 | xfs_buf_t *bp, | |
1226 | xfs_dqid_t id, | |
1227 | uint type) | |
1228 | { | |
1229 | xfs_disk_dquot_t *ddq; | |
1230 | int j; | |
1231 | ||
0b1b213f CH |
1232 | trace_xfs_reset_dqcounts(bp, _RET_IP_); |
1233 | ||
1da177e4 LT |
1234 | /* |
1235 | * Reset all counters and timers. They'll be | |
1236 | * started afresh by xfs_qm_quotacheck. | |
1237 | */ | |
1238 | #ifdef DEBUG | |
1239 | j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
1240 | do_div(j, sizeof(xfs_dqblk_t)); | |
8a7b8a89 | 1241 | ASSERT(mp->m_quotainfo->qi_dqperchunk == j); |
1da177e4 | 1242 | #endif |
62926044 | 1243 | ddq = bp->b_addr; |
8a7b8a89 | 1244 | for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { |
1da177e4 LT |
1245 | /* |
1246 | * Do a sanity check, and if needed, repair the dqblk. Don't | |
1247 | * output any warnings because it's perfectly possible to | |
c41564b5 | 1248 | * find uninitialised dquot blks. See comment in xfs_qm_dqcheck. |
1da177e4 | 1249 | */ |
a0fa2b67 | 1250 | (void) xfs_qm_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR, |
1da177e4 | 1251 | "xfs_quotacheck"); |
1149d96a CH |
1252 | ddq->d_bcount = 0; |
1253 | ddq->d_icount = 0; | |
1254 | ddq->d_rtbcount = 0; | |
1255 | ddq->d_btimer = 0; | |
1256 | ddq->d_itimer = 0; | |
1257 | ddq->d_rtbtimer = 0; | |
1258 | ddq->d_bwarns = 0; | |
1259 | ddq->d_iwarns = 0; | |
1260 | ddq->d_rtbwarns = 0; | |
1da177e4 LT |
1261 | ddq = (xfs_disk_dquot_t *) ((xfs_dqblk_t *)ddq + 1); |
1262 | } | |
1da177e4 LT |
1263 | } |
1264 | ||
1265 | STATIC int | |
1266 | xfs_qm_dqiter_bufs( | |
1267 | xfs_mount_t *mp, | |
1268 | xfs_dqid_t firstid, | |
1269 | xfs_fsblock_t bno, | |
1270 | xfs_filblks_t blkcnt, | |
1271 | uint flags) | |
1272 | { | |
1273 | xfs_buf_t *bp; | |
1274 | int error; | |
c8ad20ff | 1275 | int type; |
1da177e4 LT |
1276 | |
1277 | ASSERT(blkcnt > 0); | |
c8ad20ff NS |
1278 | type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : |
1279 | (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); | |
1da177e4 LT |
1280 | error = 0; |
1281 | ||
1282 | /* | |
1283 | * Blkcnt arg can be a very big number, and might even be | |
1284 | * larger than the log itself. So, we have to break it up into | |
1285 | * manageable-sized transactions. | |
1286 | * Note that we don't start a permanent transaction here; we might | |
1287 | * not be able to get a log reservation for the whole thing up front, | |
1288 | * and we don't really care to either, because we just discard | |
1289 | * everything if we were to crash in the middle of this loop. | |
1290 | */ | |
1291 | while (blkcnt--) { | |
1292 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1293 | XFS_FSB_TO_DADDR(mp, bno), | |
8a7b8a89 | 1294 | mp->m_quotainfo->qi_dqchunklen, 0, &bp); |
1da177e4 LT |
1295 | if (error) |
1296 | break; | |
1297 | ||
5b139738 | 1298 | xfs_qm_reset_dqcounts(mp, bp, firstid, type); |
1da177e4 LT |
1299 | xfs_bdwrite(mp, bp); |
1300 | /* | |
1301 | * goto the next block. | |
1302 | */ | |
1303 | bno++; | |
8a7b8a89 | 1304 | firstid += mp->m_quotainfo->qi_dqperchunk; |
1da177e4 | 1305 | } |
014c2544 | 1306 | return error; |
1da177e4 LT |
1307 | } |
1308 | ||
1309 | /* | |
c8ad20ff | 1310 | * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a |
1da177e4 LT |
1311 | * caller supplied function for every chunk of dquots that we find. |
1312 | */ | |
1313 | STATIC int | |
1314 | xfs_qm_dqiterate( | |
1315 | xfs_mount_t *mp, | |
1316 | xfs_inode_t *qip, | |
1317 | uint flags) | |
1318 | { | |
1319 | xfs_bmbt_irec_t *map; | |
1320 | int i, nmaps; /* number of map entries */ | |
1321 | int error; /* return value */ | |
1322 | xfs_fileoff_t lblkno; | |
1323 | xfs_filblks_t maxlblkcnt; | |
1324 | xfs_dqid_t firstid; | |
1325 | xfs_fsblock_t rablkno; | |
1326 | xfs_filblks_t rablkcnt; | |
1327 | ||
1328 | error = 0; | |
1329 | /* | |
c41564b5 | 1330 | * This looks racy, but we can't keep an inode lock across a |
1da177e4 LT |
1331 | * trans_reserve. But, this gets called during quotacheck, and that |
1332 | * happens only at mount time which is single threaded. | |
1333 | */ | |
1334 | if (qip->i_d.di_nblocks == 0) | |
014c2544 | 1335 | return 0; |
1da177e4 LT |
1336 | |
1337 | map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); | |
1338 | ||
1339 | lblkno = 0; | |
1340 | maxlblkcnt = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp)); | |
1341 | do { | |
1342 | nmaps = XFS_DQITER_MAP_SIZE; | |
1343 | /* | |
1344 | * We aren't changing the inode itself. Just changing | |
1345 | * some of its data. No new blocks are added here, and | |
1346 | * the inode is never added to the transaction. | |
1347 | */ | |
1348 | xfs_ilock(qip, XFS_ILOCK_SHARED); | |
1349 | error = xfs_bmapi(NULL, qip, lblkno, | |
1350 | maxlblkcnt - lblkno, | |
1351 | XFS_BMAPI_METADATA, | |
1352 | NULL, | |
b4e9181e | 1353 | 0, map, &nmaps, NULL); |
1da177e4 LT |
1354 | xfs_iunlock(qip, XFS_ILOCK_SHARED); |
1355 | if (error) | |
1356 | break; | |
1357 | ||
1358 | ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); | |
1359 | for (i = 0; i < nmaps; i++) { | |
1360 | ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); | |
1361 | ASSERT(map[i].br_blockcount); | |
1362 | ||
1363 | ||
1364 | lblkno += map[i].br_blockcount; | |
1365 | ||
1366 | if (map[i].br_startblock == HOLESTARTBLOCK) | |
1367 | continue; | |
1368 | ||
1369 | firstid = (xfs_dqid_t) map[i].br_startoff * | |
8a7b8a89 | 1370 | mp->m_quotainfo->qi_dqperchunk; |
1da177e4 LT |
1371 | /* |
1372 | * Do a read-ahead on the next extent. | |
1373 | */ | |
1374 | if ((i+1 < nmaps) && | |
1375 | (map[i+1].br_startblock != HOLESTARTBLOCK)) { | |
1376 | rablkcnt = map[i+1].br_blockcount; | |
1377 | rablkno = map[i+1].br_startblock; | |
1378 | while (rablkcnt--) { | |
1a1a3e97 | 1379 | xfs_buf_readahead(mp->m_ddev_targp, |
1da177e4 | 1380 | XFS_FSB_TO_DADDR(mp, rablkno), |
8a7b8a89 | 1381 | mp->m_quotainfo->qi_dqchunklen); |
1da177e4 LT |
1382 | rablkno++; |
1383 | } | |
1384 | } | |
1385 | /* | |
1386 | * Iterate thru all the blks in the extent and | |
1387 | * reset the counters of all the dquots inside them. | |
1388 | */ | |
1389 | if ((error = xfs_qm_dqiter_bufs(mp, | |
1390 | firstid, | |
1391 | map[i].br_startblock, | |
1392 | map[i].br_blockcount, | |
1393 | flags))) { | |
1394 | break; | |
1395 | } | |
1396 | } | |
1397 | ||
1398 | if (error) | |
1399 | break; | |
1400 | } while (nmaps > 0); | |
1401 | ||
f0e2d93c | 1402 | kmem_free(map); |
1da177e4 | 1403 | |
014c2544 | 1404 | return error; |
1da177e4 LT |
1405 | } |
1406 | ||
1407 | /* | |
1408 | * Called by dqusage_adjust in doing a quotacheck. | |
52fda114 CH |
1409 | * |
1410 | * Given the inode, and a dquot id this updates both the incore dqout as well | |
1411 | * as the buffer copy. This is so that once the quotacheck is done, we can | |
1412 | * just log all the buffers, as opposed to logging numerous updates to | |
1413 | * individual dquots. | |
1da177e4 | 1414 | */ |
52fda114 | 1415 | STATIC int |
1da177e4 | 1416 | xfs_qm_quotacheck_dqadjust( |
52fda114 CH |
1417 | struct xfs_inode *ip, |
1418 | xfs_dqid_t id, | |
1419 | uint type, | |
1da177e4 LT |
1420 | xfs_qcnt_t nblks, |
1421 | xfs_qcnt_t rtblks) | |
1422 | { | |
52fda114 CH |
1423 | struct xfs_mount *mp = ip->i_mount; |
1424 | struct xfs_dquot *dqp; | |
1425 | int error; | |
1426 | ||
1427 | error = xfs_qm_dqget(mp, ip, id, type, | |
1428 | XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp); | |
1429 | if (error) { | |
1430 | /* | |
1431 | * Shouldn't be able to turn off quotas here. | |
1432 | */ | |
1433 | ASSERT(error != ESRCH); | |
1434 | ASSERT(error != ENOENT); | |
1435 | return error; | |
1436 | } | |
0b1b213f CH |
1437 | |
1438 | trace_xfs_dqadjust(dqp); | |
1439 | ||
1da177e4 LT |
1440 | /* |
1441 | * Adjust the inode count and the block count to reflect this inode's | |
1442 | * resource usage. | |
1443 | */ | |
413d57c9 | 1444 | be64_add_cpu(&dqp->q_core.d_icount, 1); |
1da177e4 LT |
1445 | dqp->q_res_icount++; |
1446 | if (nblks) { | |
413d57c9 | 1447 | be64_add_cpu(&dqp->q_core.d_bcount, nblks); |
1da177e4 LT |
1448 | dqp->q_res_bcount += nblks; |
1449 | } | |
1450 | if (rtblks) { | |
413d57c9 | 1451 | be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); |
1da177e4 LT |
1452 | dqp->q_res_rtbcount += rtblks; |
1453 | } | |
1454 | ||
1455 | /* | |
1456 | * Set default limits, adjust timers (since we changed usages) | |
191f8488 CH |
1457 | * |
1458 | * There are no timers for the default values set in the root dquot. | |
1da177e4 | 1459 | */ |
191f8488 | 1460 | if (dqp->q_core.d_id) { |
52fda114 CH |
1461 | xfs_qm_adjust_dqlimits(mp, &dqp->q_core); |
1462 | xfs_qm_adjust_dqtimers(mp, &dqp->q_core); | |
1da177e4 LT |
1463 | } |
1464 | ||
1465 | dqp->dq_flags |= XFS_DQ_DIRTY; | |
52fda114 CH |
1466 | xfs_qm_dqput(dqp); |
1467 | return 0; | |
1da177e4 LT |
1468 | } |
1469 | ||
1470 | STATIC int | |
1471 | xfs_qm_get_rtblks( | |
1472 | xfs_inode_t *ip, | |
1473 | xfs_qcnt_t *O_rtblks) | |
1474 | { | |
1475 | xfs_filblks_t rtblks; /* total rt blks */ | |
4eea22f0 | 1476 | xfs_extnum_t idx; /* extent record index */ |
1da177e4 LT |
1477 | xfs_ifork_t *ifp; /* inode fork pointer */ |
1478 | xfs_extnum_t nextents; /* number of extent entries */ | |
1da177e4 LT |
1479 | int error; |
1480 | ||
1481 | ASSERT(XFS_IS_REALTIME_INODE(ip)); | |
1482 | ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); | |
1483 | if (!(ifp->if_flags & XFS_IFEXTENTS)) { | |
1484 | if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) | |
014c2544 | 1485 | return error; |
1da177e4 LT |
1486 | } |
1487 | rtblks = 0; | |
4eea22f0 | 1488 | nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); |
a6f64d4a CH |
1489 | for (idx = 0; idx < nextents; idx++) |
1490 | rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); | |
1da177e4 | 1491 | *O_rtblks = (xfs_qcnt_t)rtblks; |
014c2544 | 1492 | return 0; |
1da177e4 LT |
1493 | } |
1494 | ||
1495 | /* | |
1496 | * callback routine supplied to bulkstat(). Given an inumber, find its | |
1497 | * dquots and update them to account for resources taken by that inode. | |
1498 | */ | |
1499 | /* ARGSUSED */ | |
1500 | STATIC int | |
1501 | xfs_qm_dqusage_adjust( | |
1502 | xfs_mount_t *mp, /* mount point for filesystem */ | |
1503 | xfs_ino_t ino, /* inode number to get data for */ | |
1504 | void __user *buffer, /* not used */ | |
1505 | int ubsize, /* not used */ | |
1da177e4 | 1506 | int *ubused, /* not used */ |
1da177e4 LT |
1507 | int *res) /* result code value */ |
1508 | { | |
1509 | xfs_inode_t *ip; | |
52fda114 | 1510 | xfs_qcnt_t nblks, rtblks = 0; |
1da177e4 LT |
1511 | int error; |
1512 | ||
1513 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
1514 | ||
1515 | /* | |
1516 | * rootino must have its resources accounted for, not so with the quota | |
1517 | * inodes. | |
1518 | */ | |
1519 | if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) { | |
1520 | *res = BULKSTAT_RV_NOTHING; | |
1521 | return XFS_ERROR(EINVAL); | |
1522 | } | |
1523 | ||
1524 | /* | |
1525 | * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget | |
1526 | * interface expects the inode to be exclusively locked because that's | |
1527 | * the case in all other instances. It's OK that we do this because | |
1528 | * quotacheck is done only at mount time. | |
1529 | */ | |
52fda114 CH |
1530 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip); |
1531 | if (error) { | |
1da177e4 | 1532 | *res = BULKSTAT_RV_NOTHING; |
014c2544 | 1533 | return error; |
1da177e4 LT |
1534 | } |
1535 | ||
52fda114 | 1536 | ASSERT(ip->i_delayed_blks == 0); |
1da177e4 | 1537 | |
52fda114 | 1538 | if (XFS_IS_REALTIME_INODE(ip)) { |
1da177e4 LT |
1539 | /* |
1540 | * Walk thru the extent list and count the realtime blocks. | |
1541 | */ | |
52fda114 CH |
1542 | error = xfs_qm_get_rtblks(ip, &rtblks); |
1543 | if (error) | |
1544 | goto error0; | |
1da177e4 | 1545 | } |
1da177e4 | 1546 | |
52fda114 | 1547 | nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; |
1da177e4 LT |
1548 | |
1549 | /* | |
1550 | * Add the (disk blocks and inode) resources occupied by this | |
1551 | * inode to its dquots. We do this adjustment in the incore dquot, | |
1552 | * and also copy the changes to its buffer. | |
1553 | * We don't care about putting these changes in a transaction | |
1554 | * envelope because if we crash in the middle of a 'quotacheck' | |
1555 | * we have to start from the beginning anyway. | |
1556 | * Once we're done, we'll log all the dquot bufs. | |
1557 | * | |
c41564b5 | 1558 | * The *QUOTA_ON checks below may look pretty racy, but quotachecks |
1da177e4 LT |
1559 | * and quotaoffs don't race. (Quotachecks happen at mount time only). |
1560 | */ | |
1561 | if (XFS_IS_UQUOTA_ON(mp)) { | |
52fda114 CH |
1562 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid, |
1563 | XFS_DQ_USER, nblks, rtblks); | |
1564 | if (error) | |
1565 | goto error0; | |
1da177e4 | 1566 | } |
52fda114 CH |
1567 | |
1568 | if (XFS_IS_GQUOTA_ON(mp)) { | |
1569 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid, | |
1570 | XFS_DQ_GROUP, nblks, rtblks); | |
1571 | if (error) | |
1572 | goto error0; | |
1da177e4 | 1573 | } |
1da177e4 | 1574 | |
52fda114 | 1575 | if (XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 1576 | error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip), |
52fda114 CH |
1577 | XFS_DQ_PROJ, nblks, rtblks); |
1578 | if (error) | |
1579 | goto error0; | |
1580 | } | |
1581 | ||
1582 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1583 | IRELE(ip); | |
1da177e4 | 1584 | *res = BULKSTAT_RV_DIDONE; |
014c2544 | 1585 | return 0; |
52fda114 CH |
1586 | |
1587 | error0: | |
1588 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1589 | IRELE(ip); | |
1590 | *res = BULKSTAT_RV_GIVEUP; | |
1591 | return error; | |
1da177e4 LT |
1592 | } |
1593 | ||
1594 | /* | |
1595 | * Walk thru all the filesystem inodes and construct a consistent view | |
1596 | * of the disk quota world. If the quotacheck fails, disable quotas. | |
1597 | */ | |
1598 | int | |
1599 | xfs_qm_quotacheck( | |
1600 | xfs_mount_t *mp) | |
1601 | { | |
1602 | int done, count, error; | |
1603 | xfs_ino_t lastino; | |
1604 | size_t structsz; | |
1605 | xfs_inode_t *uip, *gip; | |
1606 | uint flags; | |
1607 | ||
1608 | count = INT_MAX; | |
1609 | structsz = 1; | |
1610 | lastino = 0; | |
1611 | flags = 0; | |
1612 | ||
8a7b8a89 | 1613 | ASSERT(mp->m_quotainfo->qi_uquotaip || mp->m_quotainfo->qi_gquotaip); |
1da177e4 LT |
1614 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1615 | ||
1616 | /* | |
1617 | * There should be no cached dquots. The (simplistic) quotacheck | |
1618 | * algorithm doesn't like that. | |
1619 | */ | |
3a25404b | 1620 | ASSERT(list_empty(&mp->m_quotainfo->qi_dqlist)); |
1da177e4 | 1621 | |
0b932ccc | 1622 | xfs_notice(mp, "Quotacheck needed: Please wait."); |
1da177e4 LT |
1623 | |
1624 | /* | |
c8ad20ff | 1625 | * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset |
1da177e4 LT |
1626 | * their counters to zero. We need a clean slate. |
1627 | * We don't log our changes till later. | |
1628 | */ | |
8a7b8a89 CH |
1629 | uip = mp->m_quotainfo->qi_uquotaip; |
1630 | if (uip) { | |
1631 | error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA); | |
1632 | if (error) | |
1da177e4 LT |
1633 | goto error_return; |
1634 | flags |= XFS_UQUOTA_CHKD; | |
1635 | } | |
1636 | ||
8a7b8a89 CH |
1637 | gip = mp->m_quotainfo->qi_gquotaip; |
1638 | if (gip) { | |
1639 | error = xfs_qm_dqiterate(mp, gip, XFS_IS_GQUOTA_ON(mp) ? | |
1640 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1641 | if (error) | |
1da177e4 | 1642 | goto error_return; |
c8ad20ff | 1643 | flags |= XFS_OQUOTA_CHKD; |
1da177e4 LT |
1644 | } |
1645 | ||
1646 | do { | |
1647 | /* | |
1648 | * Iterate thru all the inodes in the file system, | |
1649 | * adjusting the corresponding dquot counters in core. | |
1650 | */ | |
7dce11db CH |
1651 | error = xfs_bulkstat(mp, &lastino, &count, |
1652 | xfs_qm_dqusage_adjust, | |
1653 | structsz, NULL, &done); | |
1654 | if (error) | |
1da177e4 LT |
1655 | break; |
1656 | ||
7dce11db | 1657 | } while (!done); |
1da177e4 | 1658 | |
4b8879df DC |
1659 | /* |
1660 | * We've made all the changes that we need to make incore. | |
1661 | * Flush them down to disk buffers if everything was updated | |
1662 | * successfully. | |
1663 | */ | |
1664 | if (!error) | |
20026d92 | 1665 | error = xfs_qm_dqflush_all(mp, 0); |
4b8879df | 1666 | |
1da177e4 LT |
1667 | /* |
1668 | * We can get this error if we couldn't do a dquot allocation inside | |
1669 | * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the | |
1670 | * dirty dquots that might be cached, we just want to get rid of them | |
1671 | * and turn quotaoff. The dquots won't be attached to any of the inodes | |
1672 | * at this point (because we intentionally didn't in dqget_noattach). | |
1673 | */ | |
1674 | if (error) { | |
8112e9dc | 1675 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 LT |
1676 | goto error_return; |
1677 | } | |
1da177e4 LT |
1678 | |
1679 | /* | |
1680 | * We didn't log anything, because if we crashed, we'll have to | |
1681 | * start the quotacheck from scratch anyway. However, we must make | |
1682 | * sure that our dquot changes are secure before we put the | |
1683 | * quotacheck'd stamp on the superblock. So, here we do a synchronous | |
1684 | * flush. | |
1685 | */ | |
1686 | XFS_bflush(mp->m_ddev_targp); | |
1687 | ||
1688 | /* | |
1689 | * If one type of quotas is off, then it will lose its | |
1690 | * quotachecked status, since we won't be doing accounting for | |
1691 | * that type anymore. | |
1692 | */ | |
c8ad20ff | 1693 | mp->m_qflags &= ~(XFS_OQUOTA_CHKD | XFS_UQUOTA_CHKD); |
1da177e4 LT |
1694 | mp->m_qflags |= flags; |
1695 | ||
1da177e4 LT |
1696 | error_return: |
1697 | if (error) { | |
0b932ccc DC |
1698 | xfs_warn(mp, |
1699 | "Quotacheck: Unsuccessful (Error %d): Disabling quotas.", | |
1700 | error); | |
1da177e4 LT |
1701 | /* |
1702 | * We must turn off quotas. | |
1703 | */ | |
1704 | ASSERT(mp->m_quotainfo != NULL); | |
1705 | ASSERT(xfs_Gqm != NULL); | |
1706 | xfs_qm_destroy_quotainfo(mp); | |
31d5577b | 1707 | if (xfs_mount_reset_sbqflags(mp)) { |
0b932ccc DC |
1708 | xfs_warn(mp, |
1709 | "Quotacheck: Failed to reset quota flags."); | |
31d5577b | 1710 | } |
0b932ccc DC |
1711 | } else |
1712 | xfs_notice(mp, "Quotacheck: Done."); | |
1da177e4 LT |
1713 | return (error); |
1714 | } | |
1715 | ||
1716 | /* | |
1717 | * This is called after the superblock has been read in and we're ready to | |
1718 | * iget the quota inodes. | |
1719 | */ | |
1720 | STATIC int | |
1721 | xfs_qm_init_quotainos( | |
1722 | xfs_mount_t *mp) | |
1723 | { | |
1724 | xfs_inode_t *uip, *gip; | |
1725 | int error; | |
1726 | __int64_t sbflags; | |
1727 | uint flags; | |
1728 | ||
1729 | ASSERT(mp->m_quotainfo); | |
1730 | uip = gip = NULL; | |
1731 | sbflags = 0; | |
1732 | flags = 0; | |
1733 | ||
1734 | /* | |
1735 | * Get the uquota and gquota inodes | |
1736 | */ | |
62118709 | 1737 | if (xfs_sb_version_hasquota(&mp->m_sb)) { |
1da177e4 LT |
1738 | if (XFS_IS_UQUOTA_ON(mp) && |
1739 | mp->m_sb.sb_uquotino != NULLFSINO) { | |
1740 | ASSERT(mp->m_sb.sb_uquotino > 0); | |
1741 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, | |
7b6259e7 | 1742 | 0, 0, &uip))) |
1da177e4 LT |
1743 | return XFS_ERROR(error); |
1744 | } | |
c8ad20ff | 1745 | if (XFS_IS_OQUOTA_ON(mp) && |
1da177e4 LT |
1746 | mp->m_sb.sb_gquotino != NULLFSINO) { |
1747 | ASSERT(mp->m_sb.sb_gquotino > 0); | |
1748 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, | |
7b6259e7 | 1749 | 0, 0, &gip))) { |
1da177e4 | 1750 | if (uip) |
43355099 | 1751 | IRELE(uip); |
1da177e4 LT |
1752 | return XFS_ERROR(error); |
1753 | } | |
1754 | } | |
1755 | } else { | |
1756 | flags |= XFS_QMOPT_SBVERSION; | |
1757 | sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1758 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS); | |
1759 | } | |
1760 | ||
1761 | /* | |
1762 | * Create the two inodes, if they don't exist already. The changes | |
1763 | * made above will get added to a transaction and logged in one of | |
1764 | * the qino_alloc calls below. If the device is readonly, | |
1765 | * temporarily switch to read-write to do this. | |
1766 | */ | |
1767 | if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { | |
1768 | if ((error = xfs_qm_qino_alloc(mp, &uip, | |
1769 | sbflags | XFS_SB_UQUOTINO, | |
1770 | flags | XFS_QMOPT_UQUOTA))) | |
1771 | return XFS_ERROR(error); | |
1772 | ||
1773 | flags &= ~XFS_QMOPT_SBVERSION; | |
1774 | } | |
c8ad20ff NS |
1775 | if (XFS_IS_OQUOTA_ON(mp) && gip == NULL) { |
1776 | flags |= (XFS_IS_GQUOTA_ON(mp) ? | |
1777 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1778 | error = xfs_qm_qino_alloc(mp, &gip, | |
1779 | sbflags | XFS_SB_GQUOTINO, flags); | |
1780 | if (error) { | |
1da177e4 | 1781 | if (uip) |
43355099 | 1782 | IRELE(uip); |
1da177e4 LT |
1783 | |
1784 | return XFS_ERROR(error); | |
1785 | } | |
1786 | } | |
1787 | ||
8a7b8a89 CH |
1788 | mp->m_quotainfo->qi_uquotaip = uip; |
1789 | mp->m_quotainfo->qi_gquotaip = gip; | |
1da177e4 | 1790 | |
014c2544 | 1791 | return 0; |
1da177e4 LT |
1792 | } |
1793 | ||
1794 | ||
368e1361 | 1795 | |
1da177e4 | 1796 | /* |
368e1361 DC |
1797 | * Just pop the least recently used dquot off the freelist and |
1798 | * recycle it. The returned dquot is locked. | |
1da177e4 | 1799 | */ |
368e1361 DC |
1800 | STATIC xfs_dquot_t * |
1801 | xfs_qm_dqreclaim_one(void) | |
1da177e4 | 1802 | { |
368e1361 DC |
1803 | xfs_dquot_t *dqpout; |
1804 | xfs_dquot_t *dqp; | |
1da177e4 | 1805 | int restarts; |
0fbca4d1 | 1806 | int startagain; |
1da177e4 | 1807 | |
1da177e4 | 1808 | restarts = 0; |
368e1361 | 1809 | dqpout = NULL; |
1da177e4 | 1810 | |
368e1361 | 1811 | /* lockorder: hashchainlock, freelistlock, mplistlock, dqlock, dqflock */ |
0fbca4d1 DC |
1812 | again: |
1813 | startagain = 0; | |
3a8406f6 | 1814 | mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 | 1815 | |
3a8406f6 | 1816 | list_for_each_entry(dqp, &xfs_Gqm->qm_dqfrlist, q_freelist) { |
3a25404b | 1817 | struct xfs_mount *mp = dqp->q_mount; |
1da177e4 LT |
1818 | xfs_dqlock(dqp); |
1819 | ||
1820 | /* | |
1821 | * We are racing with dqlookup here. Naturally we don't | |
368e1361 DC |
1822 | * want to reclaim a dquot that lookup wants. We release the |
1823 | * freelist lock and start over, so that lookup will grab | |
1824 | * both the dquot and the freelistlock. | |
1da177e4 LT |
1825 | */ |
1826 | if (dqp->dq_flags & XFS_DQ_WANT) { | |
368e1361 DC |
1827 | ASSERT(! (dqp->dq_flags & XFS_DQ_INACTIVE)); |
1828 | ||
1829 | trace_xfs_dqreclaim_want(dqp); | |
1da177e4 | 1830 | XQM_STATS_INC(xqmstats.xs_qm_dqwants); |
0fbca4d1 DC |
1831 | restarts++; |
1832 | startagain = 1; | |
1833 | goto dqunlock; | |
1da177e4 LT |
1834 | } |
1835 | ||
1836 | /* | |
1837 | * If the dquot is inactive, we are assured that it is | |
1838 | * not on the mplist or the hashlist, and that makes our | |
1839 | * life easier. | |
1840 | */ | |
1841 | if (dqp->dq_flags & XFS_DQ_INACTIVE) { | |
3a25404b | 1842 | ASSERT(mp == NULL); |
1da177e4 | 1843 | ASSERT(! XFS_DQ_IS_DIRTY(dqp)); |
e6a81f13 | 1844 | ASSERT(list_empty(&dqp->q_hashlist)); |
3a25404b | 1845 | ASSERT(list_empty(&dqp->q_mplist)); |
3a8406f6 DC |
1846 | list_del_init(&dqp->q_freelist); |
1847 | xfs_Gqm->qm_dqfrlist_cnt--; | |
368e1361 | 1848 | dqpout = dqp; |
1da177e4 | 1849 | XQM_STATS_INC(xqmstats.xs_qm_dqinact_reclaims); |
0fbca4d1 | 1850 | goto dqunlock; |
1da177e4 LT |
1851 | } |
1852 | ||
368e1361 | 1853 | ASSERT(dqp->q_hash); |
3a25404b | 1854 | ASSERT(!list_empty(&dqp->q_mplist)); |
368e1361 | 1855 | |
1da177e4 | 1856 | /* |
0fbca4d1 DC |
1857 | * Try to grab the flush lock. If this dquot is in the process |
1858 | * of getting flushed to disk, we don't want to reclaim it. | |
1da177e4 | 1859 | */ |
0fbca4d1 DC |
1860 | if (!xfs_dqflock_nowait(dqp)) |
1861 | goto dqunlock; | |
1da177e4 LT |
1862 | |
1863 | /* | |
1864 | * We have the flush lock so we know that this is not in the | |
1865 | * process of being flushed. So, if this is dirty, flush it | |
1866 | * DELWRI so that we don't get a freelist infested with | |
1867 | * dirty dquots. | |
1868 | */ | |
1869 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
3c56836f | 1870 | int error; |
0b1b213f | 1871 | |
368e1361 | 1872 | trace_xfs_dqreclaim_dirty(dqp); |
0b1b213f | 1873 | |
1da177e4 LT |
1874 | /* |
1875 | * We flush it delayed write, so don't bother | |
368e1361 | 1876 | * releasing the freelist lock. |
1da177e4 | 1877 | */ |
20026d92 | 1878 | error = xfs_qm_dqflush(dqp, 0); |
3c56836f | 1879 | if (error) { |
53487786 DC |
1880 | xfs_warn(mp, "%s: dquot %p flush failed", |
1881 | __func__, dqp); | |
3c56836f | 1882 | } |
0fbca4d1 | 1883 | goto dqunlock; |
1da177e4 | 1884 | } |
368e1361 | 1885 | |
1da177e4 LT |
1886 | /* |
1887 | * We're trying to get the hashlock out of order. This races | |
1888 | * with dqlookup; so, we giveup and goto the next dquot if | |
1889 | * we couldn't get the hashlock. This way, we won't starve | |
1890 | * a dqlookup process that holds the hashlock that is | |
1891 | * waiting for the freelist lock. | |
1892 | */ | |
c9a192dc | 1893 | if (!mutex_trylock(&dqp->q_hash->qh_lock)) { |
368e1361 DC |
1894 | restarts++; |
1895 | goto dqfunlock; | |
1da177e4 | 1896 | } |
368e1361 | 1897 | |
1da177e4 LT |
1898 | /* |
1899 | * This races with dquot allocation code as well as dqflush_all | |
1900 | * and reclaim code. So, if we failed to grab the mplist lock, | |
1901 | * giveup everything and start over. | |
1902 | */ | |
3a25404b | 1903 | if (!mutex_trylock(&mp->m_quotainfo->qi_dqlist_lock)) { |
368e1361 | 1904 | restarts++; |
0fbca4d1 DC |
1905 | startagain = 1; |
1906 | goto qhunlock; | |
1da177e4 | 1907 | } |
0b1b213f | 1908 | |
1da177e4 | 1909 | ASSERT(dqp->q_nrefs == 0); |
3a25404b DC |
1910 | list_del_init(&dqp->q_mplist); |
1911 | mp->m_quotainfo->qi_dquots--; | |
1912 | mp->m_quotainfo->qi_dqreclaims++; | |
e6a81f13 DC |
1913 | list_del_init(&dqp->q_hashlist); |
1914 | dqp->q_hash->qh_version++; | |
3a8406f6 DC |
1915 | list_del_init(&dqp->q_freelist); |
1916 | xfs_Gqm->qm_dqfrlist_cnt--; | |
368e1361 DC |
1917 | dqpout = dqp; |
1918 | mutex_unlock(&mp->m_quotainfo->qi_dqlist_lock); | |
0fbca4d1 | 1919 | qhunlock: |
368e1361 DC |
1920 | mutex_unlock(&dqp->q_hash->qh_lock); |
1921 | dqfunlock: | |
1922 | xfs_dqfunlock(dqp); | |
0fbca4d1 | 1923 | dqunlock: |
1da177e4 | 1924 | xfs_dqunlock(dqp); |
368e1361 DC |
1925 | if (dqpout) |
1926 | break; | |
1927 | if (restarts >= XFS_QM_RECLAIM_MAX_RESTARTS) | |
0fbca4d1 DC |
1928 | break; |
1929 | if (startagain) { | |
1930 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); | |
1931 | goto again; | |
1932 | } | |
1da177e4 | 1933 | } |
3a8406f6 | 1934 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
368e1361 | 1935 | return dqpout; |
1da177e4 LT |
1936 | } |
1937 | ||
368e1361 DC |
1938 | /* |
1939 | * Traverse the freelist of dquots and attempt to reclaim a maximum of | |
1940 | * 'howmany' dquots. This operation races with dqlookup(), and attempts to | |
1941 | * favor the lookup function ... | |
1942 | */ | |
1943 | STATIC int | |
1944 | xfs_qm_shake_freelist( | |
1945 | int howmany) | |
1946 | { | |
1947 | int nreclaimed = 0; | |
1948 | xfs_dquot_t *dqp; | |
1949 | ||
1950 | if (howmany <= 0) | |
1951 | return 0; | |
1952 | ||
1953 | while (nreclaimed < howmany) { | |
1954 | dqp = xfs_qm_dqreclaim_one(); | |
1955 | if (!dqp) | |
1956 | return nreclaimed; | |
1957 | xfs_qm_dqdestroy(dqp); | |
1958 | nreclaimed++; | |
1959 | } | |
1960 | return nreclaimed; | |
1961 | } | |
1da177e4 LT |
1962 | |
1963 | /* | |
1964 | * The kmem_shake interface is invoked when memory is running low. | |
1965 | */ | |
1966 | /* ARGSUSED */ | |
1967 | STATIC int | |
7f8275d0 DC |
1968 | xfs_qm_shake( |
1969 | struct shrinker *shrink, | |
1495f230 | 1970 | struct shrink_control *sc) |
1da177e4 LT |
1971 | { |
1972 | int ndqused, nfree, n; | |
1495f230 | 1973 | gfp_t gfp_mask = sc->gfp_mask; |
1da177e4 LT |
1974 | |
1975 | if (!kmem_shake_allow(gfp_mask)) | |
014c2544 | 1976 | return 0; |
1da177e4 | 1977 | if (!xfs_Gqm) |
014c2544 | 1978 | return 0; |
1da177e4 | 1979 | |
3a8406f6 | 1980 | nfree = xfs_Gqm->qm_dqfrlist_cnt; /* free dquots */ |
1da177e4 LT |
1981 | /* incore dquots in all f/s's */ |
1982 | ndqused = atomic_read(&xfs_Gqm->qm_totaldquots) - nfree; | |
1983 | ||
1984 | ASSERT(ndqused >= 0); | |
1985 | ||
1986 | if (nfree <= ndqused && nfree < ndquot) | |
014c2544 | 1987 | return 0; |
1da177e4 LT |
1988 | |
1989 | ndqused *= xfs_Gqm->qm_dqfree_ratio; /* target # of free dquots */ | |
1990 | n = nfree - ndqused - ndquot; /* # over target */ | |
1991 | ||
1992 | return xfs_qm_shake_freelist(MAX(nfree, n)); | |
1993 | } | |
1994 | ||
1995 | ||
1da177e4 LT |
1996 | /*------------------------------------------------------------------*/ |
1997 | ||
1998 | /* | |
1999 | * Return a new incore dquot. Depending on the number of | |
2000 | * dquots in the system, we either allocate a new one on the kernel heap, | |
2001 | * or reclaim a free one. | |
2002 | * Return value is B_TRUE if we allocated a new dquot, B_FALSE if we managed | |
2003 | * to reclaim an existing one from the freelist. | |
2004 | */ | |
2005 | boolean_t | |
2006 | xfs_qm_dqalloc_incore( | |
2007 | xfs_dquot_t **O_dqpp) | |
2008 | { | |
2009 | xfs_dquot_t *dqp; | |
2010 | ||
2011 | /* | |
2012 | * Check against high water mark to see if we want to pop | |
2013 | * a nincompoop dquot off the freelist. | |
2014 | */ | |
2015 | if (atomic_read(&xfs_Gqm->qm_totaldquots) >= ndquot) { | |
2016 | /* | |
2017 | * Try to recycle a dquot from the freelist. | |
2018 | */ | |
2019 | if ((dqp = xfs_qm_dqreclaim_one())) { | |
2020 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaims); | |
2021 | /* | |
2022 | * Just zero the core here. The rest will get | |
2023 | * reinitialized by caller. XXX we shouldn't even | |
2024 | * do this zero ... | |
2025 | */ | |
2026 | memset(&dqp->q_core, 0, sizeof(dqp->q_core)); | |
2027 | *O_dqpp = dqp; | |
014c2544 | 2028 | return B_FALSE; |
1da177e4 LT |
2029 | } |
2030 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaim_misses); | |
2031 | } | |
2032 | ||
2033 | /* | |
2034 | * Allocate a brand new dquot on the kernel heap and return it | |
2035 | * to the caller to initialize. | |
2036 | */ | |
2037 | ASSERT(xfs_Gqm->qm_dqzone != NULL); | |
2038 | *O_dqpp = kmem_zone_zalloc(xfs_Gqm->qm_dqzone, KM_SLEEP); | |
2039 | atomic_inc(&xfs_Gqm->qm_totaldquots); | |
2040 | ||
014c2544 | 2041 | return B_TRUE; |
1da177e4 LT |
2042 | } |
2043 | ||
2044 | ||
2045 | /* | |
2046 | * Start a transaction and write the incore superblock changes to | |
2047 | * disk. flags parameter indicates which fields have changed. | |
2048 | */ | |
2049 | int | |
2050 | xfs_qm_write_sb_changes( | |
2051 | xfs_mount_t *mp, | |
2052 | __int64_t flags) | |
2053 | { | |
2054 | xfs_trans_t *tp; | |
2055 | int error; | |
2056 | ||
1da177e4 LT |
2057 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); |
2058 | if ((error = xfs_trans_reserve(tp, 0, | |
2059 | mp->m_sb.sb_sectsize + 128, 0, | |
2060 | 0, | |
2061 | XFS_DEFAULT_LOG_COUNT))) { | |
2062 | xfs_trans_cancel(tp, 0); | |
014c2544 | 2063 | return error; |
1da177e4 LT |
2064 | } |
2065 | ||
2066 | xfs_mod_sb(tp, flags); | |
e5720eec | 2067 | error = xfs_trans_commit(tp, 0); |
1da177e4 | 2068 | |
e5720eec | 2069 | return error; |
1da177e4 LT |
2070 | } |
2071 | ||
2072 | ||
2073 | /* --------------- utility functions for vnodeops ---------------- */ | |
2074 | ||
2075 | ||
2076 | /* | |
6c77b0ea | 2077 | * Given an inode, a uid, gid and prid make sure that we have |
1da177e4 LT |
2078 | * allocated relevant dquot(s) on disk, and that we won't exceed inode |
2079 | * quotas by creating this file. | |
2080 | * This also attaches dquot(s) to the given inode after locking it, | |
2081 | * and returns the dquots corresponding to the uid and/or gid. | |
2082 | * | |
2083 | * in : inode (unlocked) | |
2084 | * out : udquot, gdquot with references taken and unlocked | |
2085 | */ | |
2086 | int | |
2087 | xfs_qm_vop_dqalloc( | |
7d095257 CH |
2088 | struct xfs_inode *ip, |
2089 | uid_t uid, | |
2090 | gid_t gid, | |
2091 | prid_t prid, | |
2092 | uint flags, | |
2093 | struct xfs_dquot **O_udqpp, | |
2094 | struct xfs_dquot **O_gdqpp) | |
1da177e4 | 2095 | { |
7d095257 CH |
2096 | struct xfs_mount *mp = ip->i_mount; |
2097 | struct xfs_dquot *uq, *gq; | |
2098 | int error; | |
2099 | uint lockflags; | |
1da177e4 | 2100 | |
7d095257 | 2101 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
1da177e4 LT |
2102 | return 0; |
2103 | ||
2104 | lockflags = XFS_ILOCK_EXCL; | |
2105 | xfs_ilock(ip, lockflags); | |
2106 | ||
bd186aa9 | 2107 | if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) |
1da177e4 LT |
2108 | gid = ip->i_d.di_gid; |
2109 | ||
2110 | /* | |
2111 | * Attach the dquot(s) to this inode, doing a dquot allocation | |
2112 | * if necessary. The dquot(s) will not be locked. | |
2113 | */ | |
2114 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
7d095257 CH |
2115 | error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); |
2116 | if (error) { | |
1da177e4 | 2117 | xfs_iunlock(ip, lockflags); |
014c2544 | 2118 | return error; |
1da177e4 LT |
2119 | } |
2120 | } | |
2121 | ||
2122 | uq = gq = NULL; | |
c8ad20ff | 2123 | if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { |
1da177e4 LT |
2124 | if (ip->i_d.di_uid != uid) { |
2125 | /* | |
2126 | * What we need is the dquot that has this uid, and | |
2127 | * if we send the inode to dqget, the uid of the inode | |
2128 | * takes priority over what's sent in the uid argument. | |
2129 | * We must unlock inode here before calling dqget if | |
2130 | * we're not sending the inode, because otherwise | |
2131 | * we'll deadlock by doing trans_reserve while | |
2132 | * holding ilock. | |
2133 | */ | |
2134 | xfs_iunlock(ip, lockflags); | |
2135 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t) uid, | |
2136 | XFS_DQ_USER, | |
2137 | XFS_QMOPT_DQALLOC | | |
2138 | XFS_QMOPT_DOWARN, | |
2139 | &uq))) { | |
2140 | ASSERT(error != ENOENT); | |
014c2544 | 2141 | return error; |
1da177e4 LT |
2142 | } |
2143 | /* | |
2144 | * Get the ilock in the right order. | |
2145 | */ | |
2146 | xfs_dqunlock(uq); | |
2147 | lockflags = XFS_ILOCK_SHARED; | |
2148 | xfs_ilock(ip, lockflags); | |
2149 | } else { | |
2150 | /* | |
2151 | * Take an extra reference, because we'll return | |
2152 | * this to caller | |
2153 | */ | |
2154 | ASSERT(ip->i_udquot); | |
2155 | uq = ip->i_udquot; | |
2156 | xfs_dqlock(uq); | |
2157 | XFS_DQHOLD(uq); | |
2158 | xfs_dqunlock(uq); | |
2159 | } | |
2160 | } | |
c8ad20ff | 2161 | if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { |
1da177e4 LT |
2162 | if (ip->i_d.di_gid != gid) { |
2163 | xfs_iunlock(ip, lockflags); | |
2164 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)gid, | |
2165 | XFS_DQ_GROUP, | |
2166 | XFS_QMOPT_DQALLOC | | |
2167 | XFS_QMOPT_DOWARN, | |
2168 | &gq))) { | |
2169 | if (uq) | |
2170 | xfs_qm_dqrele(uq); | |
2171 | ASSERT(error != ENOENT); | |
014c2544 | 2172 | return error; |
1da177e4 LT |
2173 | } |
2174 | xfs_dqunlock(gq); | |
2175 | lockflags = XFS_ILOCK_SHARED; | |
2176 | xfs_ilock(ip, lockflags); | |
2177 | } else { | |
2178 | ASSERT(ip->i_gdquot); | |
2179 | gq = ip->i_gdquot; | |
2180 | xfs_dqlock(gq); | |
2181 | XFS_DQHOLD(gq); | |
2182 | xfs_dqunlock(gq); | |
2183 | } | |
c8ad20ff | 2184 | } else if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 2185 | if (xfs_get_projid(ip) != prid) { |
c8ad20ff NS |
2186 | xfs_iunlock(ip, lockflags); |
2187 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, | |
2188 | XFS_DQ_PROJ, | |
2189 | XFS_QMOPT_DQALLOC | | |
2190 | XFS_QMOPT_DOWARN, | |
2191 | &gq))) { | |
2192 | if (uq) | |
2193 | xfs_qm_dqrele(uq); | |
2194 | ASSERT(error != ENOENT); | |
2195 | return (error); | |
2196 | } | |
2197 | xfs_dqunlock(gq); | |
2198 | lockflags = XFS_ILOCK_SHARED; | |
2199 | xfs_ilock(ip, lockflags); | |
2200 | } else { | |
2201 | ASSERT(ip->i_gdquot); | |
2202 | gq = ip->i_gdquot; | |
2203 | xfs_dqlock(gq); | |
2204 | XFS_DQHOLD(gq); | |
2205 | xfs_dqunlock(gq); | |
2206 | } | |
1da177e4 LT |
2207 | } |
2208 | if (uq) | |
0b1b213f | 2209 | trace_xfs_dquot_dqalloc(ip); |
1da177e4 LT |
2210 | |
2211 | xfs_iunlock(ip, lockflags); | |
2212 | if (O_udqpp) | |
2213 | *O_udqpp = uq; | |
2214 | else if (uq) | |
2215 | xfs_qm_dqrele(uq); | |
2216 | if (O_gdqpp) | |
2217 | *O_gdqpp = gq; | |
2218 | else if (gq) | |
2219 | xfs_qm_dqrele(gq); | |
014c2544 | 2220 | return 0; |
1da177e4 LT |
2221 | } |
2222 | ||
2223 | /* | |
2224 | * Actually transfer ownership, and do dquot modifications. | |
2225 | * These were already reserved. | |
2226 | */ | |
2227 | xfs_dquot_t * | |
2228 | xfs_qm_vop_chown( | |
2229 | xfs_trans_t *tp, | |
2230 | xfs_inode_t *ip, | |
2231 | xfs_dquot_t **IO_olddq, | |
2232 | xfs_dquot_t *newdq) | |
2233 | { | |
2234 | xfs_dquot_t *prevdq; | |
06d10dd9 NS |
2235 | uint bfield = XFS_IS_REALTIME_INODE(ip) ? |
2236 | XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; | |
2237 | ||
7d095257 | 2238 | |
579aa9ca | 2239 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
2240 | ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); |
2241 | ||
2242 | /* old dquot */ | |
2243 | prevdq = *IO_olddq; | |
2244 | ASSERT(prevdq); | |
2245 | ASSERT(prevdq != newdq); | |
2246 | ||
06d10dd9 NS |
2247 | xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); |
2248 | xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); | |
1da177e4 LT |
2249 | |
2250 | /* the sparkling new dquot */ | |
06d10dd9 NS |
2251 | xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); |
2252 | xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); | |
1da177e4 LT |
2253 | |
2254 | /* | |
2255 | * Take an extra reference, because the inode | |
2256 | * is going to keep this dquot pointer even | |
2257 | * after the trans_commit. | |
2258 | */ | |
2259 | xfs_dqlock(newdq); | |
2260 | XFS_DQHOLD(newdq); | |
2261 | xfs_dqunlock(newdq); | |
2262 | *IO_olddq = newdq; | |
2263 | ||
014c2544 | 2264 | return prevdq; |
1da177e4 LT |
2265 | } |
2266 | ||
2267 | /* | |
c8ad20ff | 2268 | * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). |
1da177e4 LT |
2269 | */ |
2270 | int | |
2271 | xfs_qm_vop_chown_reserve( | |
2272 | xfs_trans_t *tp, | |
2273 | xfs_inode_t *ip, | |
2274 | xfs_dquot_t *udqp, | |
2275 | xfs_dquot_t *gdqp, | |
2276 | uint flags) | |
2277 | { | |
7d095257 | 2278 | xfs_mount_t *mp = ip->i_mount; |
9a2a7de2 | 2279 | uint delblks, blkflags, prjflags = 0; |
1da177e4 | 2280 | xfs_dquot_t *unresudq, *unresgdq, *delblksudq, *delblksgdq; |
7d095257 CH |
2281 | int error; |
2282 | ||
1da177e4 | 2283 | |
579aa9ca | 2284 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); |
1da177e4 LT |
2285 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
2286 | ||
2287 | delblks = ip->i_delayed_blks; | |
2288 | delblksudq = delblksgdq = unresudq = unresgdq = NULL; | |
06d10dd9 NS |
2289 | blkflags = XFS_IS_REALTIME_INODE(ip) ? |
2290 | XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; | |
1da177e4 LT |
2291 | |
2292 | if (XFS_IS_UQUOTA_ON(mp) && udqp && | |
1149d96a | 2293 | ip->i_d.di_uid != (uid_t)be32_to_cpu(udqp->q_core.d_id)) { |
1da177e4 LT |
2294 | delblksudq = udqp; |
2295 | /* | |
2296 | * If there are delayed allocation blocks, then we have to | |
2297 | * unreserve those from the old dquot, and add them to the | |
2298 | * new dquot. | |
2299 | */ | |
2300 | if (delblks) { | |
2301 | ASSERT(ip->i_udquot); | |
2302 | unresudq = ip->i_udquot; | |
2303 | } | |
2304 | } | |
c8ad20ff | 2305 | if (XFS_IS_OQUOTA_ON(ip->i_mount) && gdqp) { |
9a2a7de2 | 2306 | if (XFS_IS_PQUOTA_ON(ip->i_mount) && |
6743099c | 2307 | xfs_get_projid(ip) != be32_to_cpu(gdqp->q_core.d_id)) |
9a2a7de2 NS |
2308 | prjflags = XFS_QMOPT_ENOSPC; |
2309 | ||
2310 | if (prjflags || | |
2311 | (XFS_IS_GQUOTA_ON(ip->i_mount) && | |
2312 | ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id))) { | |
c8ad20ff NS |
2313 | delblksgdq = gdqp; |
2314 | if (delblks) { | |
2315 | ASSERT(ip->i_gdquot); | |
2316 | unresgdq = ip->i_gdquot; | |
2317 | } | |
1da177e4 LT |
2318 | } |
2319 | } | |
2320 | ||
2321 | if ((error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, | |
2322 | delblksudq, delblksgdq, ip->i_d.di_nblocks, 1, | |
9a2a7de2 | 2323 | flags | blkflags | prjflags))) |
1da177e4 LT |
2324 | return (error); |
2325 | ||
2326 | /* | |
2327 | * Do the delayed blks reservations/unreservations now. Since, these | |
2328 | * are done without the help of a transaction, if a reservation fails | |
2329 | * its previous reservations won't be automatically undone by trans | |
2330 | * code. So, we have to do it manually here. | |
2331 | */ | |
2332 | if (delblks) { | |
2333 | /* | |
2334 | * Do the reservations first. Unreservation can't fail. | |
2335 | */ | |
2336 | ASSERT(delblksudq || delblksgdq); | |
2337 | ASSERT(unresudq || unresgdq); | |
2338 | if ((error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
2339 | delblksudq, delblksgdq, (xfs_qcnt_t)delblks, 0, | |
9a2a7de2 | 2340 | flags | blkflags | prjflags))) |
1da177e4 LT |
2341 | return (error); |
2342 | xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
2343 | unresudq, unresgdq, -((xfs_qcnt_t)delblks), 0, | |
06d10dd9 | 2344 | blkflags); |
1da177e4 LT |
2345 | } |
2346 | ||
2347 | return (0); | |
2348 | } | |
2349 | ||
2350 | int | |
2351 | xfs_qm_vop_rename_dqattach( | |
7d095257 | 2352 | struct xfs_inode **i_tab) |
1da177e4 | 2353 | { |
7d095257 CH |
2354 | struct xfs_mount *mp = i_tab[0]->i_mount; |
2355 | int i; | |
1da177e4 | 2356 | |
7d095257 | 2357 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
014c2544 | 2358 | return 0; |
1da177e4 | 2359 | |
7d095257 CH |
2360 | for (i = 0; (i < 4 && i_tab[i]); i++) { |
2361 | struct xfs_inode *ip = i_tab[i]; | |
2362 | int error; | |
2363 | ||
1da177e4 LT |
2364 | /* |
2365 | * Watch out for duplicate entries in the table. | |
2366 | */ | |
7d095257 CH |
2367 | if (i == 0 || ip != i_tab[i-1]) { |
2368 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
1da177e4 LT |
2369 | error = xfs_qm_dqattach(ip, 0); |
2370 | if (error) | |
014c2544 | 2371 | return error; |
1da177e4 LT |
2372 | } |
2373 | } | |
2374 | } | |
014c2544 | 2375 | return 0; |
1da177e4 LT |
2376 | } |
2377 | ||
2378 | void | |
7d095257 CH |
2379 | xfs_qm_vop_create_dqattach( |
2380 | struct xfs_trans *tp, | |
2381 | struct xfs_inode *ip, | |
2382 | struct xfs_dquot *udqp, | |
2383 | struct xfs_dquot *gdqp) | |
1da177e4 | 2384 | { |
7d095257 CH |
2385 | struct xfs_mount *mp = tp->t_mountp; |
2386 | ||
2387 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) | |
1da177e4 LT |
2388 | return; |
2389 | ||
579aa9ca | 2390 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
7d095257 | 2391 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1da177e4 LT |
2392 | |
2393 | if (udqp) { | |
2394 | xfs_dqlock(udqp); | |
2395 | XFS_DQHOLD(udqp); | |
2396 | xfs_dqunlock(udqp); | |
2397 | ASSERT(ip->i_udquot == NULL); | |
2398 | ip->i_udquot = udqp; | |
7d095257 | 2399 | ASSERT(XFS_IS_UQUOTA_ON(mp)); |
1149d96a | 2400 | ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); |
1da177e4 LT |
2401 | xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); |
2402 | } | |
2403 | if (gdqp) { | |
2404 | xfs_dqlock(gdqp); | |
2405 | XFS_DQHOLD(gdqp); | |
2406 | xfs_dqunlock(gdqp); | |
2407 | ASSERT(ip->i_gdquot == NULL); | |
2408 | ip->i_gdquot = gdqp; | |
7d095257 CH |
2409 | ASSERT(XFS_IS_OQUOTA_ON(mp)); |
2410 | ASSERT((XFS_IS_GQUOTA_ON(mp) ? | |
6743099c | 2411 | ip->i_d.di_gid : xfs_get_projid(ip)) == |
ee2a4f7c | 2412 | be32_to_cpu(gdqp->q_core.d_id)); |
1da177e4 LT |
2413 | xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); |
2414 | } | |
2415 | } | |
2416 |