Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
4ce3121f NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
4ce3121f NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
4ce3121f NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
4ce3121f NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 LT |
18 | #include "xfs.h" |
19 | #include "xfs_fs.h" | |
a844f451 | 20 | #include "xfs_bit.h" |
1da177e4 | 21 | #include "xfs_log.h" |
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 *); |
7f8275d0 | 63 | STATIC int xfs_qm_shake(struct shrinker *, int, gfp_t); |
1da177e4 | 64 | |
8e1f936b RR |
65 | static struct shrinker xfs_qm_shaker = { |
66 | .shrink = xfs_qm_shake, | |
67 | .seeks = DEFAULT_SEEKS, | |
68 | }; | |
69 | ||
1da177e4 | 70 | #ifdef DEBUG |
a0b0b8a5 | 71 | extern struct mutex qcheck_lock; |
1da177e4 LT |
72 | #endif |
73 | ||
74 | #ifdef QUOTADEBUG | |
3a25404b DC |
75 | static void |
76 | xfs_qm_dquot_list_print( | |
77 | struct xfs_mount *mp) | |
78 | { | |
79 | xfs_dquot_t *dqp; | |
80 | int i = 0; | |
81 | ||
82 | list_for_each_entry(dqp, &mp->m_quotainfo->qi_dqlist_lock, qi_mplist) { | |
83 | cmn_err(CE_DEBUG, " %d. \"%d (%s)\" " | |
84 | "bcnt = %lld, icnt = %lld, refs = %d", | |
85 | i++, be32_to_cpu(dqp->q_core.d_id), | |
86 | DQFLAGTO_TYPESTR(dqp), | |
87 | (long long)be64_to_cpu(dqp->q_core.d_bcount), | |
88 | (long long)be64_to_cpu(dqp->q_core.d_icount), | |
89 | dqp->q_nrefs); | |
90 | } | |
1da177e4 LT |
91 | } |
92 | #else | |
3a25404b | 93 | static void xfs_qm_dquot_list_print(struct xfs_mount *mp) { } |
1da177e4 LT |
94 | #endif |
95 | ||
96 | /* | |
97 | * Initialize the XQM structure. | |
98 | * Note that there is not one quota manager per file system. | |
99 | */ | |
100 | STATIC struct xfs_qm * | |
101 | xfs_Gqm_init(void) | |
102 | { | |
6b3f6b5b NS |
103 | xfs_dqhash_t *udqhash, *gdqhash; |
104 | xfs_qm_t *xqm; | |
215101c3 NS |
105 | size_t hsize; |
106 | uint i; | |
1da177e4 LT |
107 | |
108 | /* | |
109 | * Initialize the dquot hash tables. | |
110 | */ | |
77e4635a | 111 | udqhash = kmem_zalloc_greedy(&hsize, |
5995cb7d | 112 | XFS_QM_HASHSIZE_LOW * sizeof(xfs_dqhash_t), |
bdfb0430 CH |
113 | XFS_QM_HASHSIZE_HIGH * sizeof(xfs_dqhash_t)); |
114 | if (!udqhash) | |
115 | goto out; | |
116 | ||
117 | gdqhash = kmem_zalloc_large(hsize); | |
d67b1b03 | 118 | if (!gdqhash) |
bdfb0430 CH |
119 | goto out_free_udqhash; |
120 | ||
77e4635a | 121 | hsize /= sizeof(xfs_dqhash_t); |
6b3f6b5b | 122 | ndquot = hsize << 8; |
1da177e4 | 123 | |
6b3f6b5b NS |
124 | xqm = kmem_zalloc(sizeof(xfs_qm_t), KM_SLEEP); |
125 | xqm->qm_dqhashmask = hsize - 1; | |
126 | xqm->qm_usr_dqhtable = udqhash; | |
127 | xqm->qm_grp_dqhtable = gdqhash; | |
1da177e4 LT |
128 | ASSERT(xqm->qm_usr_dqhtable != NULL); |
129 | ASSERT(xqm->qm_grp_dqhtable != NULL); | |
130 | ||
131 | for (i = 0; i < hsize; i++) { | |
132 | xfs_qm_list_init(&(xqm->qm_usr_dqhtable[i]), "uxdqh", i); | |
133 | xfs_qm_list_init(&(xqm->qm_grp_dqhtable[i]), "gxdqh", i); | |
134 | } | |
135 | ||
136 | /* | |
137 | * Freelist of all dquots of all file systems | |
138 | */ | |
3a8406f6 DC |
139 | INIT_LIST_HEAD(&xqm->qm_dqfrlist); |
140 | xqm->qm_dqfrlist_cnt = 0; | |
141 | mutex_init(&xqm->qm_dqfrlist_lock); | |
1da177e4 LT |
142 | |
143 | /* | |
144 | * dquot zone. we register our own low-memory callback. | |
145 | */ | |
146 | if (!qm_dqzone) { | |
147 | xqm->qm_dqzone = kmem_zone_init(sizeof(xfs_dquot_t), | |
148 | "xfs_dquots"); | |
149 | qm_dqzone = xqm->qm_dqzone; | |
150 | } else | |
151 | xqm->qm_dqzone = qm_dqzone; | |
152 | ||
8e1f936b | 153 | register_shrinker(&xfs_qm_shaker); |
1da177e4 LT |
154 | |
155 | /* | |
156 | * The t_dqinfo portion of transactions. | |
157 | */ | |
158 | if (!qm_dqtrxzone) { | |
159 | xqm->qm_dqtrxzone = kmem_zone_init(sizeof(xfs_dquot_acct_t), | |
160 | "xfs_dqtrx"); | |
161 | qm_dqtrxzone = xqm->qm_dqtrxzone; | |
162 | } else | |
163 | xqm->qm_dqtrxzone = qm_dqtrxzone; | |
164 | ||
165 | atomic_set(&xqm->qm_totaldquots, 0); | |
166 | xqm->qm_dqfree_ratio = XFS_QM_DQFREE_RATIO; | |
167 | xqm->qm_nrefs = 0; | |
168 | #ifdef DEBUG | |
c2e81432 | 169 | mutex_init(&qcheck_lock); |
1da177e4 LT |
170 | #endif |
171 | return xqm; | |
bdfb0430 CH |
172 | |
173 | out_free_udqhash: | |
174 | kmem_free_large(udqhash); | |
175 | out: | |
176 | return NULL; | |
1da177e4 LT |
177 | } |
178 | ||
179 | /* | |
180 | * Destroy the global quota manager when its reference count goes to zero. | |
181 | */ | |
ba0f32d4 | 182 | STATIC void |
1da177e4 LT |
183 | xfs_qm_destroy( |
184 | struct xfs_qm *xqm) | |
185 | { | |
3a8406f6 | 186 | struct xfs_dquot *dqp, *n; |
1da177e4 LT |
187 | int hsize, i; |
188 | ||
189 | ASSERT(xqm != NULL); | |
190 | ASSERT(xqm->qm_nrefs == 0); | |
8e1f936b | 191 | unregister_shrinker(&xfs_qm_shaker); |
1da177e4 LT |
192 | hsize = xqm->qm_dqhashmask + 1; |
193 | for (i = 0; i < hsize; i++) { | |
194 | xfs_qm_list_destroy(&(xqm->qm_usr_dqhtable[i])); | |
195 | xfs_qm_list_destroy(&(xqm->qm_grp_dqhtable[i])); | |
196 | } | |
bdfb0430 CH |
197 | kmem_free_large(xqm->qm_usr_dqhtable); |
198 | kmem_free_large(xqm->qm_grp_dqhtable); | |
1da177e4 LT |
199 | xqm->qm_usr_dqhtable = NULL; |
200 | xqm->qm_grp_dqhtable = NULL; | |
201 | xqm->qm_dqhashmask = 0; | |
3a8406f6 DC |
202 | |
203 | /* frlist cleanup */ | |
204 | mutex_lock(&xqm->qm_dqfrlist_lock); | |
205 | list_for_each_entry_safe(dqp, n, &xqm->qm_dqfrlist, q_freelist) { | |
206 | xfs_dqlock(dqp); | |
207 | #ifdef QUOTADEBUG | |
208 | cmn_err(CE_DEBUG, "FREELIST destroy 0x%p", dqp); | |
209 | #endif | |
210 | list_del_init(&dqp->q_freelist); | |
211 | xfs_Gqm->qm_dqfrlist_cnt--; | |
212 | xfs_dqunlock(dqp); | |
213 | xfs_qm_dqdestroy(dqp); | |
214 | } | |
215 | mutex_unlock(&xqm->qm_dqfrlist_lock); | |
216 | mutex_destroy(&xqm->qm_dqfrlist_lock); | |
1da177e4 LT |
217 | #ifdef DEBUG |
218 | mutex_destroy(&qcheck_lock); | |
219 | #endif | |
f0e2d93c | 220 | kmem_free(xqm); |
1da177e4 LT |
221 | } |
222 | ||
223 | /* | |
224 | * Called at mount time to let XQM know that another file system is | |
225 | * starting quotas. This isn't crucial information as the individual mount | |
226 | * structures are pretty independent, but it helps the XQM keep a | |
227 | * global view of what's going on. | |
228 | */ | |
229 | /* ARGSUSED */ | |
230 | STATIC int | |
231 | xfs_qm_hold_quotafs_ref( | |
232 | struct xfs_mount *mp) | |
233 | { | |
234 | /* | |
235 | * Need to lock the xfs_Gqm structure for things like this. For example, | |
236 | * the structure could disappear between the entry to this routine and | |
237 | * a HOLD operation if not locked. | |
238 | */ | |
e2494582 | 239 | mutex_lock(&xfs_Gqm_lock); |
1da177e4 | 240 | |
bdfb0430 | 241 | if (!xfs_Gqm) { |
1da177e4 | 242 | xfs_Gqm = xfs_Gqm_init(); |
38e712ab JL |
243 | if (!xfs_Gqm) { |
244 | mutex_unlock(&xfs_Gqm_lock); | |
bdfb0430 | 245 | return ENOMEM; |
38e712ab | 246 | } |
bdfb0430 CH |
247 | } |
248 | ||
1da177e4 LT |
249 | /* |
250 | * We can keep a list of all filesystems with quotas mounted for | |
251 | * debugging and statistical purposes, but ... | |
252 | * Just take a reference and get out. | |
253 | */ | |
e2494582 CH |
254 | xfs_Gqm->qm_nrefs++; |
255 | mutex_unlock(&xfs_Gqm_lock); | |
1da177e4 LT |
256 | |
257 | return 0; | |
258 | } | |
259 | ||
260 | ||
261 | /* | |
262 | * Release the reference that a filesystem took at mount time, | |
263 | * so that we know when we need to destroy the entire quota manager. | |
264 | */ | |
265 | /* ARGSUSED */ | |
266 | STATIC void | |
267 | xfs_qm_rele_quotafs_ref( | |
268 | struct xfs_mount *mp) | |
269 | { | |
3a8406f6 | 270 | xfs_dquot_t *dqp, *n; |
1da177e4 LT |
271 | |
272 | ASSERT(xfs_Gqm); | |
273 | ASSERT(xfs_Gqm->qm_nrefs > 0); | |
274 | ||
275 | /* | |
276 | * Go thru the freelist and destroy all inactive dquots. | |
277 | */ | |
3a8406f6 | 278 | mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 | 279 | |
3a8406f6 | 280 | list_for_each_entry_safe(dqp, n, &xfs_Gqm->qm_dqfrlist, q_freelist) { |
1da177e4 | 281 | xfs_dqlock(dqp); |
1da177e4 LT |
282 | if (dqp->dq_flags & XFS_DQ_INACTIVE) { |
283 | ASSERT(dqp->q_mount == NULL); | |
284 | ASSERT(! XFS_DQ_IS_DIRTY(dqp)); | |
e6a81f13 | 285 | ASSERT(list_empty(&dqp->q_hashlist)); |
3a25404b | 286 | ASSERT(list_empty(&dqp->q_mplist)); |
3a8406f6 DC |
287 | list_del_init(&dqp->q_freelist); |
288 | xfs_Gqm->qm_dqfrlist_cnt--; | |
1da177e4 LT |
289 | xfs_dqunlock(dqp); |
290 | xfs_qm_dqdestroy(dqp); | |
291 | } else { | |
292 | xfs_dqunlock(dqp); | |
293 | } | |
1da177e4 | 294 | } |
3a8406f6 | 295 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 LT |
296 | |
297 | /* | |
298 | * Destroy the entire XQM. If somebody mounts with quotaon, this'll | |
299 | * be restarted. | |
300 | */ | |
e2494582 CH |
301 | mutex_lock(&xfs_Gqm_lock); |
302 | if (--xfs_Gqm->qm_nrefs == 0) { | |
1da177e4 LT |
303 | xfs_qm_destroy(xfs_Gqm); |
304 | xfs_Gqm = NULL; | |
305 | } | |
e2494582 | 306 | mutex_unlock(&xfs_Gqm_lock); |
1da177e4 LT |
307 | } |
308 | ||
1da177e4 LT |
309 | /* |
310 | * Just destroy the quotainfo structure. | |
311 | */ | |
312 | void | |
7d095257 CH |
313 | xfs_qm_unmount( |
314 | struct xfs_mount *mp) | |
1da177e4 | 315 | { |
7d095257 | 316 | if (mp->m_quotainfo) { |
8112e9dc | 317 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 | 318 | xfs_qm_destroy_quotainfo(mp); |
7d095257 | 319 | } |
1da177e4 LT |
320 | } |
321 | ||
322 | ||
323 | /* | |
324 | * This is called from xfs_mountfs to start quotas and initialize all | |
325 | * necessary data structures like quotainfo. This is also responsible for | |
326 | * running a quotacheck as necessary. We are guaranteed that the superblock | |
327 | * is consistently read in at this point. | |
53aa7915 DC |
328 | * |
329 | * If we fail here, the mount will continue with quota turned off. We don't | |
330 | * need to inidicate success or failure at all. | |
1da177e4 | 331 | */ |
53aa7915 | 332 | void |
1da177e4 | 333 | xfs_qm_mount_quotas( |
4249023a | 334 | xfs_mount_t *mp) |
1da177e4 | 335 | { |
1da177e4 LT |
336 | int error = 0; |
337 | uint sbf; | |
338 | ||
1da177e4 LT |
339 | /* |
340 | * If quotas on realtime volumes is not supported, we disable | |
341 | * quotas immediately. | |
342 | */ | |
343 | if (mp->m_sb.sb_rextents) { | |
344 | cmn_err(CE_NOTE, | |
345 | "Cannot turn on quotas for realtime filesystem %s", | |
346 | mp->m_fsname); | |
347 | mp->m_qflags = 0; | |
348 | goto write_changes; | |
349 | } | |
350 | ||
1da177e4 | 351 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
155ffd07 | 352 | |
1da177e4 LT |
353 | /* |
354 | * Allocate the quotainfo structure inside the mount struct, and | |
355 | * create quotainode(s), and change/rev superblock if necessary. | |
356 | */ | |
53aa7915 DC |
357 | error = xfs_qm_init_quotainfo(mp); |
358 | if (error) { | |
1da177e4 LT |
359 | /* |
360 | * We must turn off quotas. | |
361 | */ | |
362 | ASSERT(mp->m_quotainfo == NULL); | |
363 | mp->m_qflags = 0; | |
364 | goto write_changes; | |
365 | } | |
366 | /* | |
367 | * If any of the quotas are not consistent, do a quotacheck. | |
368 | */ | |
4249023a | 369 | if (XFS_QM_NEED_QUOTACHECK(mp)) { |
53aa7915 DC |
370 | error = xfs_qm_quotacheck(mp); |
371 | if (error) { | |
372 | /* Quotacheck failed and disabled quotas. */ | |
373 | return; | |
1da177e4 | 374 | } |
1da177e4 | 375 | } |
646d5bda DD |
376 | /* |
377 | * If one type of quotas is off, then it will lose its | |
378 | * quotachecked status, since we won't be doing accounting for | |
379 | * that type anymore. | |
380 | */ | |
53aa7915 | 381 | if (!XFS_IS_UQUOTA_ON(mp)) |
646d5bda | 382 | mp->m_qflags &= ~XFS_UQUOTA_CHKD; |
53aa7915 | 383 | if (!(XFS_IS_GQUOTA_ON(mp) || XFS_IS_PQUOTA_ON(mp))) |
646d5bda | 384 | mp->m_qflags &= ~XFS_OQUOTA_CHKD; |
155ffd07 | 385 | |
1da177e4 LT |
386 | write_changes: |
387 | /* | |
3685c2a1 | 388 | * We actually don't have to acquire the m_sb_lock at all. |
1da177e4 LT |
389 | * This can only be called from mount, and that's single threaded. XXX |
390 | */ | |
3685c2a1 | 391 | spin_lock(&mp->m_sb_lock); |
1da177e4 LT |
392 | sbf = mp->m_sb.sb_qflags; |
393 | mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL; | |
3685c2a1 | 394 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
395 | |
396 | if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { | |
397 | if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) { | |
398 | /* | |
399 | * We could only have been turning quotas off. | |
400 | * We aren't in very good shape actually because | |
401 | * the incore structures are convinced that quotas are | |
402 | * off, but the on disk superblock doesn't know that ! | |
403 | */ | |
404 | ASSERT(!(XFS_IS_QUOTA_RUNNING(mp))); | |
405 | xfs_fs_cmn_err(CE_ALERT, mp, | |
406 | "XFS mount_quotas: Superblock update failed!"); | |
407 | } | |
408 | } | |
409 | ||
410 | if (error) { | |
411 | xfs_fs_cmn_err(CE_WARN, mp, | |
412 | "Failed to initialize disk quotas."); | |
7d095257 | 413 | return; |
1da177e4 | 414 | } |
7d095257 CH |
415 | |
416 | #ifdef QUOTADEBUG | |
417 | if (XFS_IS_QUOTA_ON(mp)) | |
418 | xfs_qm_internalqcheck(mp); | |
419 | #endif | |
1da177e4 LT |
420 | } |
421 | ||
422 | /* | |
423 | * Called from the vfsops layer. | |
424 | */ | |
e57481dc | 425 | void |
1da177e4 LT |
426 | xfs_qm_unmount_quotas( |
427 | xfs_mount_t *mp) | |
428 | { | |
1da177e4 LT |
429 | /* |
430 | * Release the dquots that root inode, et al might be holding, | |
431 | * before we flush quotas and blow away the quotainfo structure. | |
432 | */ | |
433 | ASSERT(mp->m_rootip); | |
434 | xfs_qm_dqdetach(mp->m_rootip); | |
435 | if (mp->m_rbmip) | |
436 | xfs_qm_dqdetach(mp->m_rbmip); | |
437 | if (mp->m_rsumip) | |
438 | xfs_qm_dqdetach(mp->m_rsumip); | |
439 | ||
440 | /* | |
e57481dc | 441 | * Release the quota inodes. |
1da177e4 | 442 | */ |
1da177e4 | 443 | if (mp->m_quotainfo) { |
e57481dc CH |
444 | if (mp->m_quotainfo->qi_uquotaip) { |
445 | IRELE(mp->m_quotainfo->qi_uquotaip); | |
446 | mp->m_quotainfo->qi_uquotaip = NULL; | |
1da177e4 | 447 | } |
e57481dc CH |
448 | if (mp->m_quotainfo->qi_gquotaip) { |
449 | IRELE(mp->m_quotainfo->qi_gquotaip); | |
450 | mp->m_quotainfo->qi_gquotaip = NULL; | |
1da177e4 LT |
451 | } |
452 | } | |
1da177e4 LT |
453 | } |
454 | ||
455 | /* | |
456 | * Flush all dquots of the given file system to disk. The dquots are | |
457 | * _not_ purged from memory here, just their data written to disk. | |
458 | */ | |
ba0f32d4 | 459 | STATIC int |
1da177e4 | 460 | xfs_qm_dqflush_all( |
8a7b8a89 CH |
461 | struct xfs_mount *mp, |
462 | int sync_mode) | |
1da177e4 | 463 | { |
8a7b8a89 CH |
464 | struct xfs_quotainfo *q = mp->m_quotainfo; |
465 | int recl; | |
466 | struct xfs_dquot *dqp; | |
467 | int niters; | |
468 | int error; | |
1da177e4 | 469 | |
8a7b8a89 | 470 | if (!q) |
014c2544 | 471 | return 0; |
1da177e4 LT |
472 | niters = 0; |
473 | again: | |
8a7b8a89 CH |
474 | mutex_lock(&q->qi_dqlist_lock); |
475 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 LT |
476 | xfs_dqlock(dqp); |
477 | if (! XFS_DQ_IS_DIRTY(dqp)) { | |
478 | xfs_dqunlock(dqp); | |
479 | continue; | |
480 | } | |
0b1b213f | 481 | |
1da177e4 | 482 | /* XXX a sentinel would be better */ |
8a7b8a89 | 483 | recl = q->qi_dqreclaims; |
e1f49cf2 | 484 | if (!xfs_dqflock_nowait(dqp)) { |
1da177e4 LT |
485 | /* |
486 | * If we can't grab the flush lock then check | |
487 | * to see if the dquot has been flushed delayed | |
488 | * write. If so, grab its buffer and send it | |
489 | * out immediately. We'll be able to acquire | |
490 | * the flush lock when the I/O completes. | |
491 | */ | |
492 | xfs_qm_dqflock_pushbuf_wait(dqp); | |
493 | } | |
494 | /* | |
495 | * Let go of the mplist lock. We don't want to hold it | |
496 | * across a disk write. | |
497 | */ | |
8a7b8a89 | 498 | mutex_unlock(&q->qi_dqlist_lock); |
20026d92 | 499 | error = xfs_qm_dqflush(dqp, sync_mode); |
1da177e4 LT |
500 | xfs_dqunlock(dqp); |
501 | if (error) | |
014c2544 | 502 | return error; |
1da177e4 | 503 | |
8a7b8a89 CH |
504 | mutex_lock(&q->qi_dqlist_lock); |
505 | if (recl != q->qi_dqreclaims) { | |
506 | mutex_unlock(&q->qi_dqlist_lock); | |
1da177e4 LT |
507 | /* XXX restart limit */ |
508 | goto again; | |
509 | } | |
510 | } | |
511 | ||
8a7b8a89 | 512 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 | 513 | /* return ! busy */ |
014c2544 | 514 | return 0; |
1da177e4 LT |
515 | } |
516 | /* | |
517 | * Release the group dquot pointers the user dquots may be | |
518 | * carrying around as a hint. mplist is locked on entry and exit. | |
519 | */ | |
520 | STATIC void | |
521 | xfs_qm_detach_gdquots( | |
8a7b8a89 | 522 | struct xfs_mount *mp) |
1da177e4 | 523 | { |
8a7b8a89 CH |
524 | struct xfs_quotainfo *q = mp->m_quotainfo; |
525 | struct xfs_dquot *dqp, *gdqp; | |
526 | int nrecl; | |
1da177e4 LT |
527 | |
528 | again: | |
8a7b8a89 CH |
529 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
530 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 LT |
531 | xfs_dqlock(dqp); |
532 | if ((gdqp = dqp->q_gdquot)) { | |
533 | xfs_dqlock(gdqp); | |
534 | dqp->q_gdquot = NULL; | |
535 | } | |
536 | xfs_dqunlock(dqp); | |
537 | ||
538 | if (gdqp) { | |
539 | /* | |
540 | * Can't hold the mplist lock across a dqput. | |
541 | * XXXmust convert to marker based iterations here. | |
542 | */ | |
8a7b8a89 CH |
543 | nrecl = q->qi_dqreclaims; |
544 | mutex_unlock(&q->qi_dqlist_lock); | |
1da177e4 LT |
545 | xfs_qm_dqput(gdqp); |
546 | ||
8a7b8a89 CH |
547 | mutex_lock(&q->qi_dqlist_lock); |
548 | if (nrecl != q->qi_dqreclaims) | |
1da177e4 LT |
549 | goto again; |
550 | } | |
1da177e4 LT |
551 | } |
552 | } | |
553 | ||
554 | /* | |
555 | * Go through all the incore dquots of this file system and take them | |
556 | * off the mplist and hashlist, if the dquot type matches the dqtype | |
557 | * parameter. This is used when turning off quota accounting for | |
558 | * users and/or groups, as well as when the filesystem is unmounting. | |
559 | */ | |
560 | STATIC int | |
561 | xfs_qm_dqpurge_int( | |
8a7b8a89 CH |
562 | struct xfs_mount *mp, |
563 | uint flags) | |
1da177e4 | 564 | { |
8a7b8a89 CH |
565 | struct xfs_quotainfo *q = mp->m_quotainfo; |
566 | struct xfs_dquot *dqp, *n; | |
567 | uint dqtype; | |
568 | int nrecl; | |
569 | int nmisses; | |
1da177e4 | 570 | |
8a7b8a89 | 571 | if (!q) |
014c2544 | 572 | return 0; |
1da177e4 LT |
573 | |
574 | dqtype = (flags & XFS_QMOPT_UQUOTA) ? XFS_DQ_USER : 0; | |
c8ad20ff | 575 | dqtype |= (flags & XFS_QMOPT_PQUOTA) ? XFS_DQ_PROJ : 0; |
1da177e4 LT |
576 | dqtype |= (flags & XFS_QMOPT_GQUOTA) ? XFS_DQ_GROUP : 0; |
577 | ||
8a7b8a89 | 578 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
579 | |
580 | /* | |
581 | * In the first pass through all incore dquots of this filesystem, | |
582 | * we release the group dquot pointers the user dquots may be | |
583 | * carrying around as a hint. We need to do this irrespective of | |
584 | * what's being turned off. | |
585 | */ | |
586 | xfs_qm_detach_gdquots(mp); | |
587 | ||
588 | again: | |
589 | nmisses = 0; | |
8a7b8a89 | 590 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
1da177e4 LT |
591 | /* |
592 | * Try to get rid of all of the unwanted dquots. The idea is to | |
593 | * get them off mplist and hashlist, but leave them on freelist. | |
594 | */ | |
8a7b8a89 | 595 | list_for_each_entry_safe(dqp, n, &q->qi_dqlist, q_mplist) { |
1da177e4 LT |
596 | /* |
597 | * It's OK to look at the type without taking dqlock here. | |
598 | * We're holding the mplist lock here, and that's needed for | |
599 | * a dqreclaim. | |
600 | */ | |
3a25404b | 601 | if ((dqp->dq_flags & dqtype) == 0) |
1da177e4 | 602 | continue; |
1da177e4 | 603 | |
c9a192dc | 604 | if (!mutex_trylock(&dqp->q_hash->qh_lock)) { |
8a7b8a89 CH |
605 | nrecl = q->qi_dqreclaims; |
606 | mutex_unlock(&q->qi_dqlist_lock); | |
c9a192dc | 607 | mutex_lock(&dqp->q_hash->qh_lock); |
8a7b8a89 | 608 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
609 | |
610 | /* | |
611 | * XXXTheoretically, we can get into a very long | |
612 | * ping pong game here. | |
613 | * No one can be adding dquots to the mplist at | |
614 | * this point, but somebody might be taking things off. | |
615 | */ | |
8a7b8a89 | 616 | if (nrecl != q->qi_dqreclaims) { |
c9a192dc | 617 | mutex_unlock(&dqp->q_hash->qh_lock); |
1da177e4 LT |
618 | goto again; |
619 | } | |
620 | } | |
621 | ||
622 | /* | |
623 | * Take the dquot off the mplist and hashlist. It may remain on | |
624 | * freelist in INACTIVE state. | |
625 | */ | |
4f0e8a98 | 626 | nmisses += xfs_qm_dqpurge(dqp); |
1da177e4 | 627 | } |
8a7b8a89 | 628 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 LT |
629 | return nmisses; |
630 | } | |
631 | ||
632 | int | |
633 | xfs_qm_dqpurge_all( | |
634 | xfs_mount_t *mp, | |
635 | uint flags) | |
636 | { | |
637 | int ndquots; | |
638 | ||
639 | /* | |
640 | * Purge the dquot cache. | |
641 | * None of the dquots should really be busy at this point. | |
642 | */ | |
643 | if (mp->m_quotainfo) { | |
644 | while ((ndquots = xfs_qm_dqpurge_int(mp, flags))) { | |
645 | delay(ndquots * 10); | |
646 | } | |
647 | } | |
648 | return 0; | |
649 | } | |
650 | ||
651 | STATIC int | |
652 | xfs_qm_dqattach_one( | |
653 | xfs_inode_t *ip, | |
654 | xfs_dqid_t id, | |
655 | uint type, | |
656 | uint doalloc, | |
1da177e4 LT |
657 | xfs_dquot_t *udqhint, /* hint */ |
658 | xfs_dquot_t **IO_idqpp) | |
659 | { | |
660 | xfs_dquot_t *dqp; | |
661 | int error; | |
662 | ||
579aa9ca | 663 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 664 | error = 0; |
8e9b6e7f | 665 | |
1da177e4 LT |
666 | /* |
667 | * See if we already have it in the inode itself. IO_idqpp is | |
668 | * &i_udquot or &i_gdquot. This made the code look weird, but | |
669 | * made the logic a lot simpler. | |
670 | */ | |
8e9b6e7f CH |
671 | dqp = *IO_idqpp; |
672 | if (dqp) { | |
0b1b213f | 673 | trace_xfs_dqattach_found(dqp); |
8e9b6e7f | 674 | return 0; |
1da177e4 LT |
675 | } |
676 | ||
677 | /* | |
678 | * udqhint is the i_udquot field in inode, and is non-NULL only | |
c8ad20ff | 679 | * when the type arg is group/project. Its purpose is to save a |
1da177e4 LT |
680 | * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside |
681 | * the user dquot. | |
682 | */ | |
8e9b6e7f CH |
683 | if (udqhint) { |
684 | ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); | |
1da177e4 LT |
685 | xfs_dqlock(udqhint); |
686 | ||
8e9b6e7f CH |
687 | /* |
688 | * No need to take dqlock to look at the id. | |
689 | * | |
690 | * The ID can't change until it gets reclaimed, and it won't | |
691 | * be reclaimed as long as we have a ref from inode and we | |
692 | * hold the ilock. | |
693 | */ | |
694 | dqp = udqhint->q_gdquot; | |
695 | if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) { | |
696 | xfs_dqlock(dqp); | |
697 | XFS_DQHOLD(dqp); | |
698 | ASSERT(*IO_idqpp == NULL); | |
699 | *IO_idqpp = dqp; | |
700 | ||
1da177e4 LT |
701 | xfs_dqunlock(dqp); |
702 | xfs_dqunlock(udqhint); | |
8e9b6e7f | 703 | return 0; |
1da177e4 | 704 | } |
8e9b6e7f CH |
705 | |
706 | /* | |
707 | * We can't hold a dquot lock when we call the dqget code. | |
708 | * We'll deadlock in no time, because of (not conforming to) | |
709 | * lock ordering - the inodelock comes before any dquot lock, | |
710 | * and we may drop and reacquire the ilock in xfs_qm_dqget(). | |
711 | */ | |
1da177e4 | 712 | xfs_dqunlock(udqhint); |
8e9b6e7f CH |
713 | } |
714 | ||
1da177e4 LT |
715 | /* |
716 | * Find the dquot from somewhere. This bumps the | |
717 | * reference count of dquot and returns it locked. | |
718 | * This can return ENOENT if dquot didn't exist on | |
719 | * disk and we didn't ask it to allocate; | |
720 | * ESRCH if quotas got turned off suddenly. | |
721 | */ | |
8e9b6e7f CH |
722 | error = xfs_qm_dqget(ip->i_mount, ip, id, type, XFS_QMOPT_DOWARN, &dqp); |
723 | if (error) | |
724 | return error; | |
1da177e4 | 725 | |
0b1b213f | 726 | trace_xfs_dqattach_get(dqp); |
8e9b6e7f | 727 | |
1da177e4 LT |
728 | /* |
729 | * dqget may have dropped and re-acquired the ilock, but it guarantees | |
730 | * that the dquot returned is the one that should go in the inode. | |
731 | */ | |
732 | *IO_idqpp = dqp; | |
8e9b6e7f CH |
733 | xfs_dqunlock(dqp); |
734 | return 0; | |
1da177e4 LT |
735 | } |
736 | ||
737 | ||
738 | /* | |
739 | * Given a udquot and gdquot, attach a ptr to the group dquot in the | |
740 | * udquot as a hint for future lookups. The idea sounds simple, but the | |
741 | * execution isn't, because the udquot might have a group dquot attached | |
c41564b5 | 742 | * already and getting rid of that gets us into lock ordering constraints. |
1da177e4 LT |
743 | * The process is complicated more by the fact that the dquots may or may not |
744 | * be locked on entry. | |
745 | */ | |
746 | STATIC void | |
747 | xfs_qm_dqattach_grouphint( | |
748 | xfs_dquot_t *udq, | |
8e9b6e7f | 749 | xfs_dquot_t *gdq) |
1da177e4 LT |
750 | { |
751 | xfs_dquot_t *tmp; | |
752 | ||
8e9b6e7f | 753 | xfs_dqlock(udq); |
1da177e4 LT |
754 | |
755 | if ((tmp = udq->q_gdquot)) { | |
756 | if (tmp == gdq) { | |
8e9b6e7f | 757 | xfs_dqunlock(udq); |
1da177e4 LT |
758 | return; |
759 | } | |
760 | ||
761 | udq->q_gdquot = NULL; | |
762 | /* | |
763 | * We can't keep any dqlocks when calling dqrele, | |
764 | * because the freelist lock comes before dqlocks. | |
765 | */ | |
766 | xfs_dqunlock(udq); | |
1da177e4 LT |
767 | /* |
768 | * we took a hard reference once upon a time in dqget, | |
769 | * so give it back when the udquot no longer points at it | |
770 | * dqput() does the unlocking of the dquot. | |
771 | */ | |
772 | xfs_qm_dqrele(tmp); | |
773 | ||
774 | xfs_dqlock(udq); | |
775 | xfs_dqlock(gdq); | |
776 | ||
777 | } else { | |
778 | ASSERT(XFS_DQ_IS_LOCKED(udq)); | |
8e9b6e7f | 779 | xfs_dqlock(gdq); |
1da177e4 LT |
780 | } |
781 | ||
782 | ASSERT(XFS_DQ_IS_LOCKED(udq)); | |
783 | ASSERT(XFS_DQ_IS_LOCKED(gdq)); | |
784 | /* | |
785 | * Somebody could have attached a gdquot here, | |
786 | * when we dropped the uqlock. If so, just do nothing. | |
787 | */ | |
788 | if (udq->q_gdquot == NULL) { | |
789 | XFS_DQHOLD(gdq); | |
790 | udq->q_gdquot = gdq; | |
791 | } | |
8e9b6e7f CH |
792 | |
793 | xfs_dqunlock(gdq); | |
794 | xfs_dqunlock(udq); | |
1da177e4 LT |
795 | } |
796 | ||
797 | ||
798 | /* | |
c8ad20ff NS |
799 | * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON |
800 | * into account. | |
1da177e4 | 801 | * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. |
1da177e4 LT |
802 | * Inode may get unlocked and relocked in here, and the caller must deal with |
803 | * the consequences. | |
804 | */ | |
805 | int | |
7d095257 | 806 | xfs_qm_dqattach_locked( |
1da177e4 LT |
807 | xfs_inode_t *ip, |
808 | uint flags) | |
809 | { | |
810 | xfs_mount_t *mp = ip->i_mount; | |
811 | uint nquotas = 0; | |
812 | int error = 0; | |
813 | ||
7d095257 CH |
814 | if (!XFS_IS_QUOTA_RUNNING(mp) || |
815 | !XFS_IS_QUOTA_ON(mp) || | |
816 | !XFS_NOT_DQATTACHED(mp, ip) || | |
817 | ip->i_ino == mp->m_sb.sb_uquotino || | |
818 | ip->i_ino == mp->m_sb.sb_gquotino) | |
014c2544 | 819 | return 0; |
1da177e4 | 820 | |
7d095257 | 821 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
822 | |
823 | if (XFS_IS_UQUOTA_ON(mp)) { | |
824 | error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, | |
825 | flags & XFS_QMOPT_DQALLOC, | |
1da177e4 LT |
826 | NULL, &ip->i_udquot); |
827 | if (error) | |
828 | goto done; | |
829 | nquotas++; | |
830 | } | |
579aa9ca CH |
831 | |
832 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); | |
c8ad20ff NS |
833 | if (XFS_IS_OQUOTA_ON(mp)) { |
834 | error = XFS_IS_GQUOTA_ON(mp) ? | |
835 | xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, | |
836 | flags & XFS_QMOPT_DQALLOC, | |
c8ad20ff NS |
837 | ip->i_udquot, &ip->i_gdquot) : |
838 | xfs_qm_dqattach_one(ip, ip->i_d.di_projid, XFS_DQ_PROJ, | |
1da177e4 | 839 | flags & XFS_QMOPT_DQALLOC, |
1da177e4 LT |
840 | ip->i_udquot, &ip->i_gdquot); |
841 | /* | |
842 | * Don't worry about the udquot that we may have | |
843 | * attached above. It'll get detached, if not already. | |
844 | */ | |
845 | if (error) | |
846 | goto done; | |
847 | nquotas++; | |
848 | } | |
849 | ||
850 | /* | |
851 | * Attach this group quota to the user quota as a hint. | |
852 | * This WON'T, in general, result in a thrash. | |
853 | */ | |
854 | if (nquotas == 2) { | |
579aa9ca | 855 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
856 | ASSERT(ip->i_udquot); |
857 | ASSERT(ip->i_gdquot); | |
858 | ||
859 | /* | |
860 | * We may or may not have the i_udquot locked at this point, | |
861 | * but this check is OK since we don't depend on the i_gdquot to | |
862 | * be accurate 100% all the time. It is just a hint, and this | |
863 | * will succeed in general. | |
864 | */ | |
865 | if (ip->i_udquot->q_gdquot == ip->i_gdquot) | |
866 | goto done; | |
867 | /* | |
868 | * Attach i_gdquot to the gdquot hint inside the i_udquot. | |
869 | */ | |
8e9b6e7f | 870 | xfs_qm_dqattach_grouphint(ip->i_udquot, ip->i_gdquot); |
1da177e4 LT |
871 | } |
872 | ||
7d095257 | 873 | done: |
1da177e4 LT |
874 | #ifdef QUOTADEBUG |
875 | if (! error) { | |
1da177e4 LT |
876 | if (XFS_IS_UQUOTA_ON(mp)) |
877 | ASSERT(ip->i_udquot); | |
c8ad20ff | 878 | if (XFS_IS_OQUOTA_ON(mp)) |
1da177e4 LT |
879 | ASSERT(ip->i_gdquot); |
880 | } | |
7d095257 | 881 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 882 | #endif |
7d095257 CH |
883 | return error; |
884 | } | |
1da177e4 | 885 | |
7d095257 CH |
886 | int |
887 | xfs_qm_dqattach( | |
888 | struct xfs_inode *ip, | |
889 | uint flags) | |
890 | { | |
891 | int error; | |
892 | ||
893 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
894 | error = xfs_qm_dqattach_locked(ip, flags); | |
895 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1da177e4 | 896 | |
014c2544 | 897 | return error; |
1da177e4 LT |
898 | } |
899 | ||
900 | /* | |
901 | * Release dquots (and their references) if any. | |
902 | * The inode should be locked EXCL except when this's called by | |
903 | * xfs_ireclaim. | |
904 | */ | |
905 | void | |
906 | xfs_qm_dqdetach( | |
907 | xfs_inode_t *ip) | |
908 | { | |
909 | if (!(ip->i_udquot || ip->i_gdquot)) | |
910 | return; | |
911 | ||
0b1b213f CH |
912 | trace_xfs_dquot_dqdetach(ip); |
913 | ||
1da177e4 LT |
914 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_uquotino); |
915 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_gquotino); | |
1da177e4 LT |
916 | if (ip->i_udquot) { |
917 | xfs_qm_dqrele(ip->i_udquot); | |
918 | ip->i_udquot = NULL; | |
919 | } | |
920 | if (ip->i_gdquot) { | |
921 | xfs_qm_dqrele(ip->i_gdquot); | |
922 | ip->i_gdquot = NULL; | |
923 | } | |
924 | } | |
925 | ||
1da177e4 LT |
926 | int |
927 | xfs_qm_sync( | |
8a7b8a89 CH |
928 | struct xfs_mount *mp, |
929 | int flags) | |
1da177e4 | 930 | { |
8a7b8a89 CH |
931 | struct xfs_quotainfo *q = mp->m_quotainfo; |
932 | int recl, restarts; | |
933 | struct xfs_dquot *dqp; | |
934 | int error; | |
1da177e4 | 935 | |
7d095257 | 936 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
d757762b DD |
937 | return 0; |
938 | ||
1da177e4 | 939 | restarts = 0; |
1da177e4 LT |
940 | |
941 | again: | |
8a7b8a89 | 942 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
943 | /* |
944 | * dqpurge_all() also takes the mplist lock and iterate thru all dquots | |
945 | * in quotaoff. However, if the QUOTA_ACTIVE bits are not cleared | |
946 | * when we have the mplist lock, we know that dquots will be consistent | |
947 | * as long as we have it locked. | |
948 | */ | |
3a25404b | 949 | if (!XFS_IS_QUOTA_ON(mp)) { |
8a7b8a89 | 950 | mutex_unlock(&q->qi_dqlist_lock); |
014c2544 | 951 | return 0; |
1da177e4 | 952 | } |
8a7b8a89 CH |
953 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
954 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 LT |
955 | /* |
956 | * If this is vfs_sync calling, then skip the dquots that | |
957 | * don't 'seem' to be dirty. ie. don't acquire dqlock. | |
958 | * This is very similar to what xfs_sync does with inodes. | |
959 | */ | |
8b5403a6 CH |
960 | if (flags & SYNC_TRYLOCK) { |
961 | if (!XFS_DQ_IS_DIRTY(dqp)) | |
1da177e4 | 962 | continue; |
8b5403a6 | 963 | if (!xfs_qm_dqlock_nowait(dqp)) |
1da177e4 LT |
964 | continue; |
965 | } else { | |
966 | xfs_dqlock(dqp); | |
967 | } | |
968 | ||
969 | /* | |
970 | * Now, find out for sure if this dquot is dirty or not. | |
971 | */ | |
972 | if (! XFS_DQ_IS_DIRTY(dqp)) { | |
973 | xfs_dqunlock(dqp); | |
974 | continue; | |
975 | } | |
976 | ||
977 | /* XXX a sentinel would be better */ | |
8a7b8a89 | 978 | recl = q->qi_dqreclaims; |
e1f49cf2 | 979 | if (!xfs_dqflock_nowait(dqp)) { |
8b5403a6 | 980 | if (flags & SYNC_TRYLOCK) { |
1da177e4 LT |
981 | xfs_dqunlock(dqp); |
982 | continue; | |
983 | } | |
984 | /* | |
985 | * If we can't grab the flush lock then if the caller | |
c41564b5 | 986 | * really wanted us to give this our best shot, so |
1da177e4 LT |
987 | * see if we can give a push to the buffer before we wait |
988 | * on the flush lock. At this point, we know that | |
c41564b5 | 989 | * even though the dquot is being flushed, |
1da177e4 LT |
990 | * it has (new) dirty data. |
991 | */ | |
992 | xfs_qm_dqflock_pushbuf_wait(dqp); | |
993 | } | |
994 | /* | |
995 | * Let go of the mplist lock. We don't want to hold it | |
996 | * across a disk write | |
997 | */ | |
8a7b8a89 | 998 | mutex_unlock(&q->qi_dqlist_lock); |
20026d92 | 999 | error = xfs_qm_dqflush(dqp, flags); |
1da177e4 LT |
1000 | xfs_dqunlock(dqp); |
1001 | if (error && XFS_FORCED_SHUTDOWN(mp)) | |
014c2544 | 1002 | return 0; /* Need to prevent umount failure */ |
1da177e4 | 1003 | else if (error) |
014c2544 | 1004 | return error; |
1da177e4 | 1005 | |
8a7b8a89 CH |
1006 | mutex_lock(&q->qi_dqlist_lock); |
1007 | if (recl != q->qi_dqreclaims) { | |
1da177e4 LT |
1008 | if (++restarts >= XFS_QM_SYNC_MAX_RESTARTS) |
1009 | break; | |
1010 | ||
8a7b8a89 | 1011 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 LT |
1012 | goto again; |
1013 | } | |
1014 | } | |
1015 | ||
8a7b8a89 | 1016 | mutex_unlock(&q->qi_dqlist_lock); |
014c2544 | 1017 | return 0; |
1da177e4 LT |
1018 | } |
1019 | ||
a4edd1da CH |
1020 | /* |
1021 | * The hash chains and the mplist use the same xfs_dqhash structure as | |
1022 | * their list head, but we can take the mplist qh_lock and one of the | |
1023 | * hash qh_locks at the same time without any problem as they aren't | |
1024 | * related. | |
1025 | */ | |
1026 | static struct lock_class_key xfs_quota_mplist_class; | |
1da177e4 LT |
1027 | |
1028 | /* | |
1029 | * This initializes all the quota information that's kept in the | |
1030 | * mount structure | |
1031 | */ | |
ba0f32d4 | 1032 | STATIC int |
1da177e4 LT |
1033 | xfs_qm_init_quotainfo( |
1034 | xfs_mount_t *mp) | |
1035 | { | |
1036 | xfs_quotainfo_t *qinf; | |
1037 | int error; | |
1038 | xfs_dquot_t *dqp; | |
1039 | ||
1040 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
1041 | ||
1042 | /* | |
1043 | * Tell XQM that we exist as soon as possible. | |
1044 | */ | |
1045 | if ((error = xfs_qm_hold_quotafs_ref(mp))) { | |
014c2544 | 1046 | return error; |
1da177e4 LT |
1047 | } |
1048 | ||
1049 | qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); | |
1050 | ||
1051 | /* | |
1052 | * See if quotainodes are setup, and if not, allocate them, | |
1053 | * and change the superblock accordingly. | |
1054 | */ | |
1055 | if ((error = xfs_qm_init_quotainos(mp))) { | |
f0e2d93c | 1056 | kmem_free(qinf); |
1da177e4 | 1057 | mp->m_quotainfo = NULL; |
014c2544 | 1058 | return error; |
1da177e4 LT |
1059 | } |
1060 | ||
3a25404b DC |
1061 | INIT_LIST_HEAD(&qinf->qi_dqlist); |
1062 | mutex_init(&qinf->qi_dqlist_lock); | |
1063 | lockdep_set_class(&qinf->qi_dqlist_lock, &xfs_quota_mplist_class); | |
a4edd1da | 1064 | |
1da177e4 LT |
1065 | qinf->qi_dqreclaims = 0; |
1066 | ||
1067 | /* mutex used to serialize quotaoffs */ | |
794ee1ba | 1068 | mutex_init(&qinf->qi_quotaofflock); |
1da177e4 LT |
1069 | |
1070 | /* Precalc some constants */ | |
1071 | qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
1072 | ASSERT(qinf->qi_dqchunklen); | |
1073 | qinf->qi_dqperchunk = BBTOB(qinf->qi_dqchunklen); | |
1074 | do_div(qinf->qi_dqperchunk, sizeof(xfs_dqblk_t)); | |
1075 | ||
1076 | mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); | |
1077 | ||
1078 | /* | |
1079 | * We try to get the limits from the superuser's limits fields. | |
1080 | * This is quite hacky, but it is standard quota practice. | |
1081 | * We look at the USR dquot with id == 0 first, but if user quotas | |
1082 | * are not enabled we goto the GRP dquot with id == 0. | |
1083 | * We don't really care to keep separate default limits for user | |
1084 | * and group quotas, at least not at this point. | |
1085 | */ | |
1086 | error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)0, | |
c8ad20ff NS |
1087 | XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : |
1088 | (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : | |
1089 | XFS_DQ_PROJ), | |
1da177e4 LT |
1090 | XFS_QMOPT_DQSUSER|XFS_QMOPT_DOWARN, |
1091 | &dqp); | |
1092 | if (! error) { | |
1093 | xfs_disk_dquot_t *ddqp = &dqp->q_core; | |
1094 | ||
1095 | /* | |
1096 | * The warnings and timers set the grace period given to | |
1097 | * a user or group before he or she can not perform any | |
1098 | * more writing. If it is zero, a default is used. | |
1099 | */ | |
1149d96a CH |
1100 | qinf->qi_btimelimit = ddqp->d_btimer ? |
1101 | be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; | |
1102 | qinf->qi_itimelimit = ddqp->d_itimer ? | |
1103 | be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; | |
1104 | qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? | |
1105 | be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; | |
1106 | qinf->qi_bwarnlimit = ddqp->d_bwarns ? | |
1107 | be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; | |
1108 | qinf->qi_iwarnlimit = ddqp->d_iwarns ? | |
1109 | be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; | |
1110 | qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? | |
1111 | be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; | |
1112 | qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); | |
1113 | qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); | |
1114 | qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); | |
1115 | qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); | |
1116 | qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); | |
1117 | qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); | |
1da177e4 LT |
1118 | |
1119 | /* | |
1120 | * We sent the XFS_QMOPT_DQSUSER flag to dqget because | |
1121 | * we don't want this dquot cached. We haven't done a | |
1122 | * quotacheck yet, and quotacheck doesn't like incore dquots. | |
1123 | */ | |
1124 | xfs_qm_dqdestroy(dqp); | |
1125 | } else { | |
1126 | qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; | |
1127 | qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; | |
1128 | qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; | |
1129 | qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; | |
1130 | qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; | |
06d10dd9 | 1131 | qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; |
1da177e4 LT |
1132 | } |
1133 | ||
014c2544 | 1134 | return 0; |
1da177e4 LT |
1135 | } |
1136 | ||
1137 | ||
1138 | /* | |
1139 | * Gets called when unmounting a filesystem or when all quotas get | |
1140 | * turned off. | |
1141 | * This purges the quota inodes, destroys locks and frees itself. | |
1142 | */ | |
1143 | void | |
1144 | xfs_qm_destroy_quotainfo( | |
1145 | xfs_mount_t *mp) | |
1146 | { | |
1147 | xfs_quotainfo_t *qi; | |
1148 | ||
1149 | qi = mp->m_quotainfo; | |
1150 | ASSERT(qi != NULL); | |
1151 | ASSERT(xfs_Gqm != NULL); | |
1152 | ||
1153 | /* | |
1154 | * Release the reference that XQM kept, so that we know | |
1155 | * when the XQM structure should be freed. We cannot assume | |
1156 | * that xfs_Gqm is non-null after this point. | |
1157 | */ | |
1158 | xfs_qm_rele_quotafs_ref(mp); | |
1159 | ||
3a25404b DC |
1160 | ASSERT(list_empty(&qi->qi_dqlist)); |
1161 | mutex_destroy(&qi->qi_dqlist_lock); | |
1da177e4 LT |
1162 | |
1163 | if (qi->qi_uquotaip) { | |
26cc0021 | 1164 | IRELE(qi->qi_uquotaip); |
1da177e4 LT |
1165 | qi->qi_uquotaip = NULL; /* paranoia */ |
1166 | } | |
1167 | if (qi->qi_gquotaip) { | |
26cc0021 | 1168 | IRELE(qi->qi_gquotaip); |
1da177e4 LT |
1169 | qi->qi_gquotaip = NULL; |
1170 | } | |
1171 | mutex_destroy(&qi->qi_quotaofflock); | |
f0e2d93c | 1172 | kmem_free(qi); |
1da177e4 LT |
1173 | mp->m_quotainfo = NULL; |
1174 | } | |
1175 | ||
1176 | ||
1177 | ||
1178 | /* ------------------- PRIVATE STATIC FUNCTIONS ----------------------- */ | |
1179 | ||
1180 | /* ARGSUSED */ | |
1181 | STATIC void | |
1182 | xfs_qm_list_init( | |
1183 | xfs_dqlist_t *list, | |
1184 | char *str, | |
1185 | int n) | |
1186 | { | |
794ee1ba | 1187 | mutex_init(&list->qh_lock); |
e6a81f13 | 1188 | INIT_LIST_HEAD(&list->qh_list); |
1da177e4 LT |
1189 | list->qh_version = 0; |
1190 | list->qh_nelems = 0; | |
1191 | } | |
1192 | ||
1193 | STATIC void | |
1194 | xfs_qm_list_destroy( | |
1195 | xfs_dqlist_t *list) | |
1196 | { | |
1197 | mutex_destroy(&(list->qh_lock)); | |
1198 | } | |
1199 | ||
1da177e4 LT |
1200 | /* |
1201 | * Create an inode and return with a reference already taken, but unlocked | |
1202 | * This is how we create quota inodes | |
1203 | */ | |
1204 | STATIC int | |
1205 | xfs_qm_qino_alloc( | |
1206 | xfs_mount_t *mp, | |
1207 | xfs_inode_t **ip, | |
1208 | __int64_t sbfields, | |
1209 | uint flags) | |
1210 | { | |
1211 | xfs_trans_t *tp; | |
1212 | int error; | |
1da177e4 LT |
1213 | int committed; |
1214 | ||
061f7209 | 1215 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); |
1da177e4 LT |
1216 | if ((error = xfs_trans_reserve(tp, |
1217 | XFS_QM_QINOCREATE_SPACE_RES(mp), | |
1218 | XFS_CREATE_LOG_RES(mp), 0, | |
1219 | XFS_TRANS_PERM_LOG_RES, | |
1220 | XFS_CREATE_LOG_COUNT))) { | |
1221 | xfs_trans_cancel(tp, 0); | |
014c2544 | 1222 | return error; |
1da177e4 | 1223 | } |
1da177e4 | 1224 | |
6c77b0ea CH |
1225 | error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip, &committed); |
1226 | if (error) { | |
1da177e4 LT |
1227 | xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | |
1228 | XFS_TRANS_ABORT); | |
014c2544 | 1229 | return error; |
1da177e4 LT |
1230 | } |
1231 | ||
1232 | /* | |
1233 | * Keep an extra reference to this quota inode. This inode is | |
1234 | * locked exclusively and joined to the transaction already. | |
1235 | */ | |
579aa9ca | 1236 | ASSERT(xfs_isilocked(*ip, XFS_ILOCK_EXCL)); |
26cc0021 | 1237 | IHOLD(*ip); |
1da177e4 LT |
1238 | |
1239 | /* | |
1240 | * Make the changes in the superblock, and log those too. | |
1241 | * sbfields arg may contain fields other than *QUOTINO; | |
1242 | * VERSIONNUM for example. | |
1243 | */ | |
3685c2a1 | 1244 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 1245 | if (flags & XFS_QMOPT_SBVERSION) { |
62118709 | 1246 | ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); |
1da177e4 LT |
1247 | ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
1248 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)) == | |
1249 | (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1250 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)); | |
1251 | ||
62118709 | 1252 | xfs_sb_version_addquota(&mp->m_sb); |
1da177e4 LT |
1253 | mp->m_sb.sb_uquotino = NULLFSINO; |
1254 | mp->m_sb.sb_gquotino = NULLFSINO; | |
1255 | ||
1256 | /* qflags will get updated _after_ quotacheck */ | |
1257 | mp->m_sb.sb_qflags = 0; | |
1da177e4 LT |
1258 | } |
1259 | if (flags & XFS_QMOPT_UQUOTA) | |
1260 | mp->m_sb.sb_uquotino = (*ip)->i_ino; | |
1261 | else | |
1262 | mp->m_sb.sb_gquotino = (*ip)->i_ino; | |
3685c2a1 | 1263 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
1264 | xfs_mod_sb(tp, sbfields); |
1265 | ||
1c72bf90 | 1266 | if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { |
1da177e4 | 1267 | xfs_fs_cmn_err(CE_ALERT, mp, "XFS qino_alloc failed!"); |
014c2544 | 1268 | return error; |
1da177e4 | 1269 | } |
014c2544 | 1270 | return 0; |
1da177e4 LT |
1271 | } |
1272 | ||
1273 | ||
5b139738 | 1274 | STATIC void |
1da177e4 LT |
1275 | xfs_qm_reset_dqcounts( |
1276 | xfs_mount_t *mp, | |
1277 | xfs_buf_t *bp, | |
1278 | xfs_dqid_t id, | |
1279 | uint type) | |
1280 | { | |
1281 | xfs_disk_dquot_t *ddq; | |
1282 | int j; | |
1283 | ||
0b1b213f CH |
1284 | trace_xfs_reset_dqcounts(bp, _RET_IP_); |
1285 | ||
1da177e4 LT |
1286 | /* |
1287 | * Reset all counters and timers. They'll be | |
1288 | * started afresh by xfs_qm_quotacheck. | |
1289 | */ | |
1290 | #ifdef DEBUG | |
1291 | j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
1292 | do_div(j, sizeof(xfs_dqblk_t)); | |
8a7b8a89 | 1293 | ASSERT(mp->m_quotainfo->qi_dqperchunk == j); |
1da177e4 LT |
1294 | #endif |
1295 | ddq = (xfs_disk_dquot_t *)XFS_BUF_PTR(bp); | |
8a7b8a89 | 1296 | for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { |
1da177e4 LT |
1297 | /* |
1298 | * Do a sanity check, and if needed, repair the dqblk. Don't | |
1299 | * output any warnings because it's perfectly possible to | |
c41564b5 | 1300 | * find uninitialised dquot blks. See comment in xfs_qm_dqcheck. |
1da177e4 LT |
1301 | */ |
1302 | (void) xfs_qm_dqcheck(ddq, id+j, type, XFS_QMOPT_DQREPAIR, | |
1303 | "xfs_quotacheck"); | |
1149d96a CH |
1304 | ddq->d_bcount = 0; |
1305 | ddq->d_icount = 0; | |
1306 | ddq->d_rtbcount = 0; | |
1307 | ddq->d_btimer = 0; | |
1308 | ddq->d_itimer = 0; | |
1309 | ddq->d_rtbtimer = 0; | |
1310 | ddq->d_bwarns = 0; | |
1311 | ddq->d_iwarns = 0; | |
1312 | ddq->d_rtbwarns = 0; | |
1da177e4 LT |
1313 | ddq = (xfs_disk_dquot_t *) ((xfs_dqblk_t *)ddq + 1); |
1314 | } | |
1da177e4 LT |
1315 | } |
1316 | ||
1317 | STATIC int | |
1318 | xfs_qm_dqiter_bufs( | |
1319 | xfs_mount_t *mp, | |
1320 | xfs_dqid_t firstid, | |
1321 | xfs_fsblock_t bno, | |
1322 | xfs_filblks_t blkcnt, | |
1323 | uint flags) | |
1324 | { | |
1325 | xfs_buf_t *bp; | |
1326 | int error; | |
1327 | int notcommitted; | |
1328 | int incr; | |
c8ad20ff | 1329 | int type; |
1da177e4 LT |
1330 | |
1331 | ASSERT(blkcnt > 0); | |
1332 | notcommitted = 0; | |
1333 | incr = (blkcnt > XFS_QM_MAX_DQCLUSTER_LOGSZ) ? | |
1334 | XFS_QM_MAX_DQCLUSTER_LOGSZ : blkcnt; | |
c8ad20ff NS |
1335 | type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : |
1336 | (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); | |
1da177e4 LT |
1337 | error = 0; |
1338 | ||
1339 | /* | |
1340 | * Blkcnt arg can be a very big number, and might even be | |
1341 | * larger than the log itself. So, we have to break it up into | |
1342 | * manageable-sized transactions. | |
1343 | * Note that we don't start a permanent transaction here; we might | |
1344 | * not be able to get a log reservation for the whole thing up front, | |
1345 | * and we don't really care to either, because we just discard | |
1346 | * everything if we were to crash in the middle of this loop. | |
1347 | */ | |
1348 | while (blkcnt--) { | |
1349 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1350 | XFS_FSB_TO_DADDR(mp, bno), | |
8a7b8a89 | 1351 | mp->m_quotainfo->qi_dqchunklen, 0, &bp); |
1da177e4 LT |
1352 | if (error) |
1353 | break; | |
1354 | ||
5b139738 | 1355 | xfs_qm_reset_dqcounts(mp, bp, firstid, type); |
1da177e4 LT |
1356 | xfs_bdwrite(mp, bp); |
1357 | /* | |
1358 | * goto the next block. | |
1359 | */ | |
1360 | bno++; | |
8a7b8a89 | 1361 | firstid += mp->m_quotainfo->qi_dqperchunk; |
1da177e4 | 1362 | } |
014c2544 | 1363 | return error; |
1da177e4 LT |
1364 | } |
1365 | ||
1366 | /* | |
c8ad20ff | 1367 | * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a |
1da177e4 LT |
1368 | * caller supplied function for every chunk of dquots that we find. |
1369 | */ | |
1370 | STATIC int | |
1371 | xfs_qm_dqiterate( | |
1372 | xfs_mount_t *mp, | |
1373 | xfs_inode_t *qip, | |
1374 | uint flags) | |
1375 | { | |
1376 | xfs_bmbt_irec_t *map; | |
1377 | int i, nmaps; /* number of map entries */ | |
1378 | int error; /* return value */ | |
1379 | xfs_fileoff_t lblkno; | |
1380 | xfs_filblks_t maxlblkcnt; | |
1381 | xfs_dqid_t firstid; | |
1382 | xfs_fsblock_t rablkno; | |
1383 | xfs_filblks_t rablkcnt; | |
1384 | ||
1385 | error = 0; | |
1386 | /* | |
c41564b5 | 1387 | * This looks racy, but we can't keep an inode lock across a |
1da177e4 LT |
1388 | * trans_reserve. But, this gets called during quotacheck, and that |
1389 | * happens only at mount time which is single threaded. | |
1390 | */ | |
1391 | if (qip->i_d.di_nblocks == 0) | |
014c2544 | 1392 | return 0; |
1da177e4 LT |
1393 | |
1394 | map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); | |
1395 | ||
1396 | lblkno = 0; | |
1397 | maxlblkcnt = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp)); | |
1398 | do { | |
1399 | nmaps = XFS_DQITER_MAP_SIZE; | |
1400 | /* | |
1401 | * We aren't changing the inode itself. Just changing | |
1402 | * some of its data. No new blocks are added here, and | |
1403 | * the inode is never added to the transaction. | |
1404 | */ | |
1405 | xfs_ilock(qip, XFS_ILOCK_SHARED); | |
1406 | error = xfs_bmapi(NULL, qip, lblkno, | |
1407 | maxlblkcnt - lblkno, | |
1408 | XFS_BMAPI_METADATA, | |
1409 | NULL, | |
b4e9181e | 1410 | 0, map, &nmaps, NULL); |
1da177e4 LT |
1411 | xfs_iunlock(qip, XFS_ILOCK_SHARED); |
1412 | if (error) | |
1413 | break; | |
1414 | ||
1415 | ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); | |
1416 | for (i = 0; i < nmaps; i++) { | |
1417 | ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); | |
1418 | ASSERT(map[i].br_blockcount); | |
1419 | ||
1420 | ||
1421 | lblkno += map[i].br_blockcount; | |
1422 | ||
1423 | if (map[i].br_startblock == HOLESTARTBLOCK) | |
1424 | continue; | |
1425 | ||
1426 | firstid = (xfs_dqid_t) map[i].br_startoff * | |
8a7b8a89 | 1427 | mp->m_quotainfo->qi_dqperchunk; |
1da177e4 LT |
1428 | /* |
1429 | * Do a read-ahead on the next extent. | |
1430 | */ | |
1431 | if ((i+1 < nmaps) && | |
1432 | (map[i+1].br_startblock != HOLESTARTBLOCK)) { | |
1433 | rablkcnt = map[i+1].br_blockcount; | |
1434 | rablkno = map[i+1].br_startblock; | |
1435 | while (rablkcnt--) { | |
1436 | xfs_baread(mp->m_ddev_targp, | |
1437 | XFS_FSB_TO_DADDR(mp, rablkno), | |
8a7b8a89 | 1438 | mp->m_quotainfo->qi_dqchunklen); |
1da177e4 LT |
1439 | rablkno++; |
1440 | } | |
1441 | } | |
1442 | /* | |
1443 | * Iterate thru all the blks in the extent and | |
1444 | * reset the counters of all the dquots inside them. | |
1445 | */ | |
1446 | if ((error = xfs_qm_dqiter_bufs(mp, | |
1447 | firstid, | |
1448 | map[i].br_startblock, | |
1449 | map[i].br_blockcount, | |
1450 | flags))) { | |
1451 | break; | |
1452 | } | |
1453 | } | |
1454 | ||
1455 | if (error) | |
1456 | break; | |
1457 | } while (nmaps > 0); | |
1458 | ||
f0e2d93c | 1459 | kmem_free(map); |
1da177e4 | 1460 | |
014c2544 | 1461 | return error; |
1da177e4 LT |
1462 | } |
1463 | ||
1464 | /* | |
1465 | * Called by dqusage_adjust in doing a quotacheck. | |
52fda114 CH |
1466 | * |
1467 | * Given the inode, and a dquot id this updates both the incore dqout as well | |
1468 | * as the buffer copy. This is so that once the quotacheck is done, we can | |
1469 | * just log all the buffers, as opposed to logging numerous updates to | |
1470 | * individual dquots. | |
1da177e4 | 1471 | */ |
52fda114 | 1472 | STATIC int |
1da177e4 | 1473 | xfs_qm_quotacheck_dqadjust( |
52fda114 CH |
1474 | struct xfs_inode *ip, |
1475 | xfs_dqid_t id, | |
1476 | uint type, | |
1da177e4 LT |
1477 | xfs_qcnt_t nblks, |
1478 | xfs_qcnt_t rtblks) | |
1479 | { | |
52fda114 CH |
1480 | struct xfs_mount *mp = ip->i_mount; |
1481 | struct xfs_dquot *dqp; | |
1482 | int error; | |
1483 | ||
1484 | error = xfs_qm_dqget(mp, ip, id, type, | |
1485 | XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp); | |
1486 | if (error) { | |
1487 | /* | |
1488 | * Shouldn't be able to turn off quotas here. | |
1489 | */ | |
1490 | ASSERT(error != ESRCH); | |
1491 | ASSERT(error != ENOENT); | |
1492 | return error; | |
1493 | } | |
0b1b213f CH |
1494 | |
1495 | trace_xfs_dqadjust(dqp); | |
1496 | ||
1da177e4 LT |
1497 | /* |
1498 | * Adjust the inode count and the block count to reflect this inode's | |
1499 | * resource usage. | |
1500 | */ | |
413d57c9 | 1501 | be64_add_cpu(&dqp->q_core.d_icount, 1); |
1da177e4 LT |
1502 | dqp->q_res_icount++; |
1503 | if (nblks) { | |
413d57c9 | 1504 | be64_add_cpu(&dqp->q_core.d_bcount, nblks); |
1da177e4 LT |
1505 | dqp->q_res_bcount += nblks; |
1506 | } | |
1507 | if (rtblks) { | |
413d57c9 | 1508 | be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); |
1da177e4 LT |
1509 | dqp->q_res_rtbcount += rtblks; |
1510 | } | |
1511 | ||
1512 | /* | |
1513 | * Set default limits, adjust timers (since we changed usages) | |
191f8488 CH |
1514 | * |
1515 | * There are no timers for the default values set in the root dquot. | |
1da177e4 | 1516 | */ |
191f8488 | 1517 | if (dqp->q_core.d_id) { |
52fda114 CH |
1518 | xfs_qm_adjust_dqlimits(mp, &dqp->q_core); |
1519 | xfs_qm_adjust_dqtimers(mp, &dqp->q_core); | |
1da177e4 LT |
1520 | } |
1521 | ||
1522 | dqp->dq_flags |= XFS_DQ_DIRTY; | |
52fda114 CH |
1523 | xfs_qm_dqput(dqp); |
1524 | return 0; | |
1da177e4 LT |
1525 | } |
1526 | ||
1527 | STATIC int | |
1528 | xfs_qm_get_rtblks( | |
1529 | xfs_inode_t *ip, | |
1530 | xfs_qcnt_t *O_rtblks) | |
1531 | { | |
1532 | xfs_filblks_t rtblks; /* total rt blks */ | |
4eea22f0 | 1533 | xfs_extnum_t idx; /* extent record index */ |
1da177e4 LT |
1534 | xfs_ifork_t *ifp; /* inode fork pointer */ |
1535 | xfs_extnum_t nextents; /* number of extent entries */ | |
1da177e4 LT |
1536 | int error; |
1537 | ||
1538 | ASSERT(XFS_IS_REALTIME_INODE(ip)); | |
1539 | ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); | |
1540 | if (!(ifp->if_flags & XFS_IFEXTENTS)) { | |
1541 | if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) | |
014c2544 | 1542 | return error; |
1da177e4 LT |
1543 | } |
1544 | rtblks = 0; | |
4eea22f0 | 1545 | nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); |
a6f64d4a CH |
1546 | for (idx = 0; idx < nextents; idx++) |
1547 | rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); | |
1da177e4 | 1548 | *O_rtblks = (xfs_qcnt_t)rtblks; |
014c2544 | 1549 | return 0; |
1da177e4 LT |
1550 | } |
1551 | ||
1552 | /* | |
1553 | * callback routine supplied to bulkstat(). Given an inumber, find its | |
1554 | * dquots and update them to account for resources taken by that inode. | |
1555 | */ | |
1556 | /* ARGSUSED */ | |
1557 | STATIC int | |
1558 | xfs_qm_dqusage_adjust( | |
1559 | xfs_mount_t *mp, /* mount point for filesystem */ | |
1560 | xfs_ino_t ino, /* inode number to get data for */ | |
1561 | void __user *buffer, /* not used */ | |
1562 | int ubsize, /* not used */ | |
1da177e4 | 1563 | int *ubused, /* not used */ |
1da177e4 LT |
1564 | int *res) /* result code value */ |
1565 | { | |
1566 | xfs_inode_t *ip; | |
52fda114 | 1567 | xfs_qcnt_t nblks, rtblks = 0; |
1da177e4 LT |
1568 | int error; |
1569 | ||
1570 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
1571 | ||
1572 | /* | |
1573 | * rootino must have its resources accounted for, not so with the quota | |
1574 | * inodes. | |
1575 | */ | |
1576 | if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) { | |
1577 | *res = BULKSTAT_RV_NOTHING; | |
1578 | return XFS_ERROR(EINVAL); | |
1579 | } | |
1580 | ||
1581 | /* | |
1582 | * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget | |
1583 | * interface expects the inode to be exclusively locked because that's | |
1584 | * the case in all other instances. It's OK that we do this because | |
1585 | * quotacheck is done only at mount time. | |
1586 | */ | |
52fda114 CH |
1587 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip); |
1588 | if (error) { | |
1da177e4 | 1589 | *res = BULKSTAT_RV_NOTHING; |
014c2544 | 1590 | return error; |
1da177e4 LT |
1591 | } |
1592 | ||
52fda114 | 1593 | ASSERT(ip->i_delayed_blks == 0); |
1da177e4 | 1594 | |
52fda114 | 1595 | if (XFS_IS_REALTIME_INODE(ip)) { |
1da177e4 LT |
1596 | /* |
1597 | * Walk thru the extent list and count the realtime blocks. | |
1598 | */ | |
52fda114 CH |
1599 | error = xfs_qm_get_rtblks(ip, &rtblks); |
1600 | if (error) | |
1601 | goto error0; | |
1da177e4 | 1602 | } |
1da177e4 | 1603 | |
52fda114 | 1604 | nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; |
1da177e4 LT |
1605 | |
1606 | /* | |
1607 | * Add the (disk blocks and inode) resources occupied by this | |
1608 | * inode to its dquots. We do this adjustment in the incore dquot, | |
1609 | * and also copy the changes to its buffer. | |
1610 | * We don't care about putting these changes in a transaction | |
1611 | * envelope because if we crash in the middle of a 'quotacheck' | |
1612 | * we have to start from the beginning anyway. | |
1613 | * Once we're done, we'll log all the dquot bufs. | |
1614 | * | |
c41564b5 | 1615 | * The *QUOTA_ON checks below may look pretty racy, but quotachecks |
1da177e4 LT |
1616 | * and quotaoffs don't race. (Quotachecks happen at mount time only). |
1617 | */ | |
1618 | if (XFS_IS_UQUOTA_ON(mp)) { | |
52fda114 CH |
1619 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid, |
1620 | XFS_DQ_USER, nblks, rtblks); | |
1621 | if (error) | |
1622 | goto error0; | |
1da177e4 | 1623 | } |
52fda114 CH |
1624 | |
1625 | if (XFS_IS_GQUOTA_ON(mp)) { | |
1626 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid, | |
1627 | XFS_DQ_GROUP, nblks, rtblks); | |
1628 | if (error) | |
1629 | goto error0; | |
1da177e4 | 1630 | } |
1da177e4 | 1631 | |
52fda114 CH |
1632 | if (XFS_IS_PQUOTA_ON(mp)) { |
1633 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_projid, | |
1634 | XFS_DQ_PROJ, nblks, rtblks); | |
1635 | if (error) | |
1636 | goto error0; | |
1637 | } | |
1638 | ||
1639 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1640 | IRELE(ip); | |
1da177e4 | 1641 | *res = BULKSTAT_RV_DIDONE; |
014c2544 | 1642 | return 0; |
52fda114 CH |
1643 | |
1644 | error0: | |
1645 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1646 | IRELE(ip); | |
1647 | *res = BULKSTAT_RV_GIVEUP; | |
1648 | return error; | |
1da177e4 LT |
1649 | } |
1650 | ||
1651 | /* | |
1652 | * Walk thru all the filesystem inodes and construct a consistent view | |
1653 | * of the disk quota world. If the quotacheck fails, disable quotas. | |
1654 | */ | |
1655 | int | |
1656 | xfs_qm_quotacheck( | |
1657 | xfs_mount_t *mp) | |
1658 | { | |
1659 | int done, count, error; | |
1660 | xfs_ino_t lastino; | |
1661 | size_t structsz; | |
1662 | xfs_inode_t *uip, *gip; | |
1663 | uint flags; | |
1664 | ||
1665 | count = INT_MAX; | |
1666 | structsz = 1; | |
1667 | lastino = 0; | |
1668 | flags = 0; | |
1669 | ||
8a7b8a89 | 1670 | ASSERT(mp->m_quotainfo->qi_uquotaip || mp->m_quotainfo->qi_gquotaip); |
1da177e4 LT |
1671 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1672 | ||
1673 | /* | |
1674 | * There should be no cached dquots. The (simplistic) quotacheck | |
1675 | * algorithm doesn't like that. | |
1676 | */ | |
3a25404b | 1677 | ASSERT(list_empty(&mp->m_quotainfo->qi_dqlist)); |
1da177e4 LT |
1678 | |
1679 | cmn_err(CE_NOTE, "XFS quotacheck %s: Please wait.", mp->m_fsname); | |
1680 | ||
1681 | /* | |
c8ad20ff | 1682 | * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset |
1da177e4 LT |
1683 | * their counters to zero. We need a clean slate. |
1684 | * We don't log our changes till later. | |
1685 | */ | |
8a7b8a89 CH |
1686 | uip = mp->m_quotainfo->qi_uquotaip; |
1687 | if (uip) { | |
1688 | error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA); | |
1689 | if (error) | |
1da177e4 LT |
1690 | goto error_return; |
1691 | flags |= XFS_UQUOTA_CHKD; | |
1692 | } | |
1693 | ||
8a7b8a89 CH |
1694 | gip = mp->m_quotainfo->qi_gquotaip; |
1695 | if (gip) { | |
1696 | error = xfs_qm_dqiterate(mp, gip, XFS_IS_GQUOTA_ON(mp) ? | |
1697 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1698 | if (error) | |
1da177e4 | 1699 | goto error_return; |
c8ad20ff | 1700 | flags |= XFS_OQUOTA_CHKD; |
1da177e4 LT |
1701 | } |
1702 | ||
1703 | do { | |
1704 | /* | |
1705 | * Iterate thru all the inodes in the file system, | |
1706 | * adjusting the corresponding dquot counters in core. | |
1707 | */ | |
7dce11db CH |
1708 | error = xfs_bulkstat(mp, &lastino, &count, |
1709 | xfs_qm_dqusage_adjust, | |
1710 | structsz, NULL, &done); | |
1711 | if (error) | |
1da177e4 LT |
1712 | break; |
1713 | ||
7dce11db | 1714 | } while (!done); |
1da177e4 | 1715 | |
4b8879df DC |
1716 | /* |
1717 | * We've made all the changes that we need to make incore. | |
1718 | * Flush them down to disk buffers if everything was updated | |
1719 | * successfully. | |
1720 | */ | |
1721 | if (!error) | |
20026d92 | 1722 | error = xfs_qm_dqflush_all(mp, 0); |
4b8879df | 1723 | |
1da177e4 LT |
1724 | /* |
1725 | * We can get this error if we couldn't do a dquot allocation inside | |
1726 | * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the | |
1727 | * dirty dquots that might be cached, we just want to get rid of them | |
1728 | * and turn quotaoff. The dquots won't be attached to any of the inodes | |
1729 | * at this point (because we intentionally didn't in dqget_noattach). | |
1730 | */ | |
1731 | if (error) { | |
8112e9dc | 1732 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 LT |
1733 | goto error_return; |
1734 | } | |
1da177e4 LT |
1735 | |
1736 | /* | |
1737 | * We didn't log anything, because if we crashed, we'll have to | |
1738 | * start the quotacheck from scratch anyway. However, we must make | |
1739 | * sure that our dquot changes are secure before we put the | |
1740 | * quotacheck'd stamp on the superblock. So, here we do a synchronous | |
1741 | * flush. | |
1742 | */ | |
1743 | XFS_bflush(mp->m_ddev_targp); | |
1744 | ||
1745 | /* | |
1746 | * If one type of quotas is off, then it will lose its | |
1747 | * quotachecked status, since we won't be doing accounting for | |
1748 | * that type anymore. | |
1749 | */ | |
c8ad20ff | 1750 | mp->m_qflags &= ~(XFS_OQUOTA_CHKD | XFS_UQUOTA_CHKD); |
1da177e4 LT |
1751 | mp->m_qflags |= flags; |
1752 | ||
3a25404b | 1753 | xfs_qm_dquot_list_print(mp); |
1da177e4 LT |
1754 | |
1755 | error_return: | |
1756 | if (error) { | |
1757 | cmn_err(CE_WARN, "XFS quotacheck %s: Unsuccessful (Error %d): " | |
1758 | "Disabling quotas.", | |
1759 | mp->m_fsname, error); | |
1760 | /* | |
1761 | * We must turn off quotas. | |
1762 | */ | |
1763 | ASSERT(mp->m_quotainfo != NULL); | |
1764 | ASSERT(xfs_Gqm != NULL); | |
1765 | xfs_qm_destroy_quotainfo(mp); | |
31d5577b DC |
1766 | if (xfs_mount_reset_sbqflags(mp)) { |
1767 | cmn_err(CE_WARN, "XFS quotacheck %s: " | |
1768 | "Failed to reset quota flags.", mp->m_fsname); | |
1769 | } | |
1da177e4 LT |
1770 | } else { |
1771 | cmn_err(CE_NOTE, "XFS quotacheck %s: Done.", mp->m_fsname); | |
1772 | } | |
1773 | return (error); | |
1774 | } | |
1775 | ||
1776 | /* | |
1777 | * This is called after the superblock has been read in and we're ready to | |
1778 | * iget the quota inodes. | |
1779 | */ | |
1780 | STATIC int | |
1781 | xfs_qm_init_quotainos( | |
1782 | xfs_mount_t *mp) | |
1783 | { | |
1784 | xfs_inode_t *uip, *gip; | |
1785 | int error; | |
1786 | __int64_t sbflags; | |
1787 | uint flags; | |
1788 | ||
1789 | ASSERT(mp->m_quotainfo); | |
1790 | uip = gip = NULL; | |
1791 | sbflags = 0; | |
1792 | flags = 0; | |
1793 | ||
1794 | /* | |
1795 | * Get the uquota and gquota inodes | |
1796 | */ | |
62118709 | 1797 | if (xfs_sb_version_hasquota(&mp->m_sb)) { |
1da177e4 LT |
1798 | if (XFS_IS_UQUOTA_ON(mp) && |
1799 | mp->m_sb.sb_uquotino != NULLFSINO) { | |
1800 | ASSERT(mp->m_sb.sb_uquotino > 0); | |
1801 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, | |
7b6259e7 | 1802 | 0, 0, &uip))) |
1da177e4 LT |
1803 | return XFS_ERROR(error); |
1804 | } | |
c8ad20ff | 1805 | if (XFS_IS_OQUOTA_ON(mp) && |
1da177e4 LT |
1806 | mp->m_sb.sb_gquotino != NULLFSINO) { |
1807 | ASSERT(mp->m_sb.sb_gquotino > 0); | |
1808 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, | |
7b6259e7 | 1809 | 0, 0, &gip))) { |
1da177e4 | 1810 | if (uip) |
43355099 | 1811 | IRELE(uip); |
1da177e4 LT |
1812 | return XFS_ERROR(error); |
1813 | } | |
1814 | } | |
1815 | } else { | |
1816 | flags |= XFS_QMOPT_SBVERSION; | |
1817 | sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1818 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS); | |
1819 | } | |
1820 | ||
1821 | /* | |
1822 | * Create the two inodes, if they don't exist already. The changes | |
1823 | * made above will get added to a transaction and logged in one of | |
1824 | * the qino_alloc calls below. If the device is readonly, | |
1825 | * temporarily switch to read-write to do this. | |
1826 | */ | |
1827 | if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { | |
1828 | if ((error = xfs_qm_qino_alloc(mp, &uip, | |
1829 | sbflags | XFS_SB_UQUOTINO, | |
1830 | flags | XFS_QMOPT_UQUOTA))) | |
1831 | return XFS_ERROR(error); | |
1832 | ||
1833 | flags &= ~XFS_QMOPT_SBVERSION; | |
1834 | } | |
c8ad20ff NS |
1835 | if (XFS_IS_OQUOTA_ON(mp) && gip == NULL) { |
1836 | flags |= (XFS_IS_GQUOTA_ON(mp) ? | |
1837 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1838 | error = xfs_qm_qino_alloc(mp, &gip, | |
1839 | sbflags | XFS_SB_GQUOTINO, flags); | |
1840 | if (error) { | |
1da177e4 | 1841 | if (uip) |
43355099 | 1842 | IRELE(uip); |
1da177e4 LT |
1843 | |
1844 | return XFS_ERROR(error); | |
1845 | } | |
1846 | } | |
1847 | ||
8a7b8a89 CH |
1848 | mp->m_quotainfo->qi_uquotaip = uip; |
1849 | mp->m_quotainfo->qi_gquotaip = gip; | |
1da177e4 | 1850 | |
014c2544 | 1851 | return 0; |
1da177e4 LT |
1852 | } |
1853 | ||
1854 | ||
368e1361 | 1855 | |
1da177e4 | 1856 | /* |
368e1361 DC |
1857 | * Just pop the least recently used dquot off the freelist and |
1858 | * recycle it. The returned dquot is locked. | |
1da177e4 | 1859 | */ |
368e1361 DC |
1860 | STATIC xfs_dquot_t * |
1861 | xfs_qm_dqreclaim_one(void) | |
1da177e4 | 1862 | { |
368e1361 DC |
1863 | xfs_dquot_t *dqpout; |
1864 | xfs_dquot_t *dqp; | |
1da177e4 | 1865 | int restarts; |
1da177e4 | 1866 | |
1da177e4 | 1867 | restarts = 0; |
368e1361 | 1868 | dqpout = NULL; |
1da177e4 | 1869 | |
368e1361 DC |
1870 | /* lockorder: hashchainlock, freelistlock, mplistlock, dqlock, dqflock */ |
1871 | startagain: | |
3a8406f6 | 1872 | mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 | 1873 | |
3a8406f6 | 1874 | list_for_each_entry(dqp, &xfs_Gqm->qm_dqfrlist, q_freelist) { |
3a25404b | 1875 | struct xfs_mount *mp = dqp->q_mount; |
1da177e4 LT |
1876 | xfs_dqlock(dqp); |
1877 | ||
1878 | /* | |
1879 | * We are racing with dqlookup here. Naturally we don't | |
368e1361 DC |
1880 | * want to reclaim a dquot that lookup wants. We release the |
1881 | * freelist lock and start over, so that lookup will grab | |
1882 | * both the dquot and the freelistlock. | |
1da177e4 LT |
1883 | */ |
1884 | if (dqp->dq_flags & XFS_DQ_WANT) { | |
368e1361 DC |
1885 | ASSERT(! (dqp->dq_flags & XFS_DQ_INACTIVE)); |
1886 | ||
1887 | trace_xfs_dqreclaim_want(dqp); | |
1888 | ||
1da177e4 | 1889 | xfs_dqunlock(dqp); |
3a8406f6 | 1890 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 | 1891 | if (++restarts >= XFS_QM_RECLAIM_MAX_RESTARTS) |
368e1361 | 1892 | return NULL; |
1da177e4 | 1893 | XQM_STATS_INC(xqmstats.xs_qm_dqwants); |
368e1361 | 1894 | goto startagain; |
1da177e4 LT |
1895 | } |
1896 | ||
1897 | /* | |
1898 | * If the dquot is inactive, we are assured that it is | |
1899 | * not on the mplist or the hashlist, and that makes our | |
1900 | * life easier. | |
1901 | */ | |
1902 | if (dqp->dq_flags & XFS_DQ_INACTIVE) { | |
3a25404b | 1903 | ASSERT(mp == NULL); |
1da177e4 | 1904 | ASSERT(! XFS_DQ_IS_DIRTY(dqp)); |
e6a81f13 | 1905 | ASSERT(list_empty(&dqp->q_hashlist)); |
3a25404b | 1906 | ASSERT(list_empty(&dqp->q_mplist)); |
3a8406f6 DC |
1907 | list_del_init(&dqp->q_freelist); |
1908 | xfs_Gqm->qm_dqfrlist_cnt--; | |
368e1361 DC |
1909 | xfs_dqunlock(dqp); |
1910 | dqpout = dqp; | |
1da177e4 | 1911 | XQM_STATS_INC(xqmstats.xs_qm_dqinact_reclaims); |
368e1361 | 1912 | break; |
1da177e4 LT |
1913 | } |
1914 | ||
368e1361 | 1915 | ASSERT(dqp->q_hash); |
3a25404b | 1916 | ASSERT(!list_empty(&dqp->q_mplist)); |
368e1361 | 1917 | |
1da177e4 LT |
1918 | /* |
1919 | * Try to grab the flush lock. If this dquot is in the process of | |
1920 | * getting flushed to disk, we don't want to reclaim it. | |
1921 | */ | |
e1f49cf2 | 1922 | if (!xfs_dqflock_nowait(dqp)) { |
1da177e4 | 1923 | xfs_dqunlock(dqp); |
1da177e4 LT |
1924 | continue; |
1925 | } | |
1926 | ||
1927 | /* | |
1928 | * We have the flush lock so we know that this is not in the | |
1929 | * process of being flushed. So, if this is dirty, flush it | |
1930 | * DELWRI so that we don't get a freelist infested with | |
1931 | * dirty dquots. | |
1932 | */ | |
1933 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
3c56836f | 1934 | int error; |
0b1b213f | 1935 | |
368e1361 | 1936 | trace_xfs_dqreclaim_dirty(dqp); |
0b1b213f | 1937 | |
1da177e4 LT |
1938 | /* |
1939 | * We flush it delayed write, so don't bother | |
368e1361 | 1940 | * releasing the freelist lock. |
1da177e4 | 1941 | */ |
20026d92 | 1942 | error = xfs_qm_dqflush(dqp, 0); |
3c56836f | 1943 | if (error) { |
3a25404b | 1944 | xfs_fs_cmn_err(CE_WARN, mp, |
368e1361 | 1945 | "xfs_qm_dqreclaim: dquot %p flush failed", dqp); |
3c56836f | 1946 | } |
1da177e4 | 1947 | xfs_dqunlock(dqp); /* dqflush unlocks dqflock */ |
1da177e4 LT |
1948 | continue; |
1949 | } | |
368e1361 | 1950 | |
1da177e4 LT |
1951 | /* |
1952 | * We're trying to get the hashlock out of order. This races | |
1953 | * with dqlookup; so, we giveup and goto the next dquot if | |
1954 | * we couldn't get the hashlock. This way, we won't starve | |
1955 | * a dqlookup process that holds the hashlock that is | |
1956 | * waiting for the freelist lock. | |
1957 | */ | |
c9a192dc | 1958 | if (!mutex_trylock(&dqp->q_hash->qh_lock)) { |
368e1361 DC |
1959 | restarts++; |
1960 | goto dqfunlock; | |
1da177e4 | 1961 | } |
368e1361 | 1962 | |
1da177e4 LT |
1963 | /* |
1964 | * This races with dquot allocation code as well as dqflush_all | |
1965 | * and reclaim code. So, if we failed to grab the mplist lock, | |
1966 | * giveup everything and start over. | |
1967 | */ | |
3a25404b | 1968 | if (!mutex_trylock(&mp->m_quotainfo->qi_dqlist_lock)) { |
368e1361 DC |
1969 | restarts++; |
1970 | mutex_unlock(&dqp->q_hash->qh_lock); | |
1da177e4 LT |
1971 | xfs_dqfunlock(dqp); |
1972 | xfs_dqunlock(dqp); | |
3a8406f6 | 1973 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
368e1361 DC |
1974 | if (restarts++ >= XFS_QM_RECLAIM_MAX_RESTARTS) |
1975 | return NULL; | |
1976 | goto startagain; | |
1da177e4 | 1977 | } |
0b1b213f | 1978 | |
1da177e4 | 1979 | ASSERT(dqp->q_nrefs == 0); |
3a25404b DC |
1980 | list_del_init(&dqp->q_mplist); |
1981 | mp->m_quotainfo->qi_dquots--; | |
1982 | mp->m_quotainfo->qi_dqreclaims++; | |
e6a81f13 DC |
1983 | list_del_init(&dqp->q_hashlist); |
1984 | dqp->q_hash->qh_version++; | |
3a8406f6 DC |
1985 | list_del_init(&dqp->q_freelist); |
1986 | xfs_Gqm->qm_dqfrlist_cnt--; | |
368e1361 DC |
1987 | dqpout = dqp; |
1988 | mutex_unlock(&mp->m_quotainfo->qi_dqlist_lock); | |
1989 | mutex_unlock(&dqp->q_hash->qh_lock); | |
1990 | dqfunlock: | |
1991 | xfs_dqfunlock(dqp); | |
1da177e4 | 1992 | xfs_dqunlock(dqp); |
368e1361 DC |
1993 | if (dqpout) |
1994 | break; | |
1995 | if (restarts >= XFS_QM_RECLAIM_MAX_RESTARTS) | |
1996 | return NULL; | |
1da177e4 | 1997 | } |
3a8406f6 | 1998 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
368e1361 | 1999 | return dqpout; |
1da177e4 LT |
2000 | } |
2001 | ||
368e1361 DC |
2002 | /* |
2003 | * Traverse the freelist of dquots and attempt to reclaim a maximum of | |
2004 | * 'howmany' dquots. This operation races with dqlookup(), and attempts to | |
2005 | * favor the lookup function ... | |
2006 | */ | |
2007 | STATIC int | |
2008 | xfs_qm_shake_freelist( | |
2009 | int howmany) | |
2010 | { | |
2011 | int nreclaimed = 0; | |
2012 | xfs_dquot_t *dqp; | |
2013 | ||
2014 | if (howmany <= 0) | |
2015 | return 0; | |
2016 | ||
2017 | while (nreclaimed < howmany) { | |
2018 | dqp = xfs_qm_dqreclaim_one(); | |
2019 | if (!dqp) | |
2020 | return nreclaimed; | |
2021 | xfs_qm_dqdestroy(dqp); | |
2022 | nreclaimed++; | |
2023 | } | |
2024 | return nreclaimed; | |
2025 | } | |
1da177e4 LT |
2026 | |
2027 | /* | |
2028 | * The kmem_shake interface is invoked when memory is running low. | |
2029 | */ | |
2030 | /* ARGSUSED */ | |
2031 | STATIC int | |
7f8275d0 DC |
2032 | xfs_qm_shake( |
2033 | struct shrinker *shrink, | |
2034 | int nr_to_scan, | |
2035 | gfp_t gfp_mask) | |
1da177e4 LT |
2036 | { |
2037 | int ndqused, nfree, n; | |
2038 | ||
2039 | if (!kmem_shake_allow(gfp_mask)) | |
014c2544 | 2040 | return 0; |
1da177e4 | 2041 | if (!xfs_Gqm) |
014c2544 | 2042 | return 0; |
1da177e4 | 2043 | |
3a8406f6 | 2044 | nfree = xfs_Gqm->qm_dqfrlist_cnt; /* free dquots */ |
1da177e4 LT |
2045 | /* incore dquots in all f/s's */ |
2046 | ndqused = atomic_read(&xfs_Gqm->qm_totaldquots) - nfree; | |
2047 | ||
2048 | ASSERT(ndqused >= 0); | |
2049 | ||
2050 | if (nfree <= ndqused && nfree < ndquot) | |
014c2544 | 2051 | return 0; |
1da177e4 LT |
2052 | |
2053 | ndqused *= xfs_Gqm->qm_dqfree_ratio; /* target # of free dquots */ | |
2054 | n = nfree - ndqused - ndquot; /* # over target */ | |
2055 | ||
2056 | return xfs_qm_shake_freelist(MAX(nfree, n)); | |
2057 | } | |
2058 | ||
2059 | ||
1da177e4 LT |
2060 | /*------------------------------------------------------------------*/ |
2061 | ||
2062 | /* | |
2063 | * Return a new incore dquot. Depending on the number of | |
2064 | * dquots in the system, we either allocate a new one on the kernel heap, | |
2065 | * or reclaim a free one. | |
2066 | * Return value is B_TRUE if we allocated a new dquot, B_FALSE if we managed | |
2067 | * to reclaim an existing one from the freelist. | |
2068 | */ | |
2069 | boolean_t | |
2070 | xfs_qm_dqalloc_incore( | |
2071 | xfs_dquot_t **O_dqpp) | |
2072 | { | |
2073 | xfs_dquot_t *dqp; | |
2074 | ||
2075 | /* | |
2076 | * Check against high water mark to see if we want to pop | |
2077 | * a nincompoop dquot off the freelist. | |
2078 | */ | |
2079 | if (atomic_read(&xfs_Gqm->qm_totaldquots) >= ndquot) { | |
2080 | /* | |
2081 | * Try to recycle a dquot from the freelist. | |
2082 | */ | |
2083 | if ((dqp = xfs_qm_dqreclaim_one())) { | |
2084 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaims); | |
2085 | /* | |
2086 | * Just zero the core here. The rest will get | |
2087 | * reinitialized by caller. XXX we shouldn't even | |
2088 | * do this zero ... | |
2089 | */ | |
2090 | memset(&dqp->q_core, 0, sizeof(dqp->q_core)); | |
2091 | *O_dqpp = dqp; | |
014c2544 | 2092 | return B_FALSE; |
1da177e4 LT |
2093 | } |
2094 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaim_misses); | |
2095 | } | |
2096 | ||
2097 | /* | |
2098 | * Allocate a brand new dquot on the kernel heap and return it | |
2099 | * to the caller to initialize. | |
2100 | */ | |
2101 | ASSERT(xfs_Gqm->qm_dqzone != NULL); | |
2102 | *O_dqpp = kmem_zone_zalloc(xfs_Gqm->qm_dqzone, KM_SLEEP); | |
2103 | atomic_inc(&xfs_Gqm->qm_totaldquots); | |
2104 | ||
014c2544 | 2105 | return B_TRUE; |
1da177e4 LT |
2106 | } |
2107 | ||
2108 | ||
2109 | /* | |
2110 | * Start a transaction and write the incore superblock changes to | |
2111 | * disk. flags parameter indicates which fields have changed. | |
2112 | */ | |
2113 | int | |
2114 | xfs_qm_write_sb_changes( | |
2115 | xfs_mount_t *mp, | |
2116 | __int64_t flags) | |
2117 | { | |
2118 | xfs_trans_t *tp; | |
2119 | int error; | |
2120 | ||
2121 | #ifdef QUOTADEBUG | |
2122 | cmn_err(CE_NOTE, "Writing superblock quota changes :%s", mp->m_fsname); | |
2123 | #endif | |
2124 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); | |
2125 | if ((error = xfs_trans_reserve(tp, 0, | |
2126 | mp->m_sb.sb_sectsize + 128, 0, | |
2127 | 0, | |
2128 | XFS_DEFAULT_LOG_COUNT))) { | |
2129 | xfs_trans_cancel(tp, 0); | |
014c2544 | 2130 | return error; |
1da177e4 LT |
2131 | } |
2132 | ||
2133 | xfs_mod_sb(tp, flags); | |
e5720eec | 2134 | error = xfs_trans_commit(tp, 0); |
1da177e4 | 2135 | |
e5720eec | 2136 | return error; |
1da177e4 LT |
2137 | } |
2138 | ||
2139 | ||
2140 | /* --------------- utility functions for vnodeops ---------------- */ | |
2141 | ||
2142 | ||
2143 | /* | |
6c77b0ea | 2144 | * Given an inode, a uid, gid and prid make sure that we have |
1da177e4 LT |
2145 | * allocated relevant dquot(s) on disk, and that we won't exceed inode |
2146 | * quotas by creating this file. | |
2147 | * This also attaches dquot(s) to the given inode after locking it, | |
2148 | * and returns the dquots corresponding to the uid and/or gid. | |
2149 | * | |
2150 | * in : inode (unlocked) | |
2151 | * out : udquot, gdquot with references taken and unlocked | |
2152 | */ | |
2153 | int | |
2154 | xfs_qm_vop_dqalloc( | |
7d095257 CH |
2155 | struct xfs_inode *ip, |
2156 | uid_t uid, | |
2157 | gid_t gid, | |
2158 | prid_t prid, | |
2159 | uint flags, | |
2160 | struct xfs_dquot **O_udqpp, | |
2161 | struct xfs_dquot **O_gdqpp) | |
1da177e4 | 2162 | { |
7d095257 CH |
2163 | struct xfs_mount *mp = ip->i_mount; |
2164 | struct xfs_dquot *uq, *gq; | |
2165 | int error; | |
2166 | uint lockflags; | |
1da177e4 | 2167 | |
7d095257 | 2168 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
1da177e4 LT |
2169 | return 0; |
2170 | ||
2171 | lockflags = XFS_ILOCK_EXCL; | |
2172 | xfs_ilock(ip, lockflags); | |
2173 | ||
bd186aa9 | 2174 | if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) |
1da177e4 LT |
2175 | gid = ip->i_d.di_gid; |
2176 | ||
2177 | /* | |
2178 | * Attach the dquot(s) to this inode, doing a dquot allocation | |
2179 | * if necessary. The dquot(s) will not be locked. | |
2180 | */ | |
2181 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
7d095257 CH |
2182 | error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); |
2183 | if (error) { | |
1da177e4 | 2184 | xfs_iunlock(ip, lockflags); |
014c2544 | 2185 | return error; |
1da177e4 LT |
2186 | } |
2187 | } | |
2188 | ||
2189 | uq = gq = NULL; | |
c8ad20ff | 2190 | if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { |
1da177e4 LT |
2191 | if (ip->i_d.di_uid != uid) { |
2192 | /* | |
2193 | * What we need is the dquot that has this uid, and | |
2194 | * if we send the inode to dqget, the uid of the inode | |
2195 | * takes priority over what's sent in the uid argument. | |
2196 | * We must unlock inode here before calling dqget if | |
2197 | * we're not sending the inode, because otherwise | |
2198 | * we'll deadlock by doing trans_reserve while | |
2199 | * holding ilock. | |
2200 | */ | |
2201 | xfs_iunlock(ip, lockflags); | |
2202 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t) uid, | |
2203 | XFS_DQ_USER, | |
2204 | XFS_QMOPT_DQALLOC | | |
2205 | XFS_QMOPT_DOWARN, | |
2206 | &uq))) { | |
2207 | ASSERT(error != ENOENT); | |
014c2544 | 2208 | return error; |
1da177e4 LT |
2209 | } |
2210 | /* | |
2211 | * Get the ilock in the right order. | |
2212 | */ | |
2213 | xfs_dqunlock(uq); | |
2214 | lockflags = XFS_ILOCK_SHARED; | |
2215 | xfs_ilock(ip, lockflags); | |
2216 | } else { | |
2217 | /* | |
2218 | * Take an extra reference, because we'll return | |
2219 | * this to caller | |
2220 | */ | |
2221 | ASSERT(ip->i_udquot); | |
2222 | uq = ip->i_udquot; | |
2223 | xfs_dqlock(uq); | |
2224 | XFS_DQHOLD(uq); | |
2225 | xfs_dqunlock(uq); | |
2226 | } | |
2227 | } | |
c8ad20ff | 2228 | if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { |
1da177e4 LT |
2229 | if (ip->i_d.di_gid != gid) { |
2230 | xfs_iunlock(ip, lockflags); | |
2231 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)gid, | |
2232 | XFS_DQ_GROUP, | |
2233 | XFS_QMOPT_DQALLOC | | |
2234 | XFS_QMOPT_DOWARN, | |
2235 | &gq))) { | |
2236 | if (uq) | |
2237 | xfs_qm_dqrele(uq); | |
2238 | ASSERT(error != ENOENT); | |
014c2544 | 2239 | return error; |
1da177e4 LT |
2240 | } |
2241 | xfs_dqunlock(gq); | |
2242 | lockflags = XFS_ILOCK_SHARED; | |
2243 | xfs_ilock(ip, lockflags); | |
2244 | } else { | |
2245 | ASSERT(ip->i_gdquot); | |
2246 | gq = ip->i_gdquot; | |
2247 | xfs_dqlock(gq); | |
2248 | XFS_DQHOLD(gq); | |
2249 | xfs_dqunlock(gq); | |
2250 | } | |
c8ad20ff NS |
2251 | } else if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { |
2252 | if (ip->i_d.di_projid != prid) { | |
2253 | xfs_iunlock(ip, lockflags); | |
2254 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, | |
2255 | XFS_DQ_PROJ, | |
2256 | XFS_QMOPT_DQALLOC | | |
2257 | XFS_QMOPT_DOWARN, | |
2258 | &gq))) { | |
2259 | if (uq) | |
2260 | xfs_qm_dqrele(uq); | |
2261 | ASSERT(error != ENOENT); | |
2262 | return (error); | |
2263 | } | |
2264 | xfs_dqunlock(gq); | |
2265 | lockflags = XFS_ILOCK_SHARED; | |
2266 | xfs_ilock(ip, lockflags); | |
2267 | } else { | |
2268 | ASSERT(ip->i_gdquot); | |
2269 | gq = ip->i_gdquot; | |
2270 | xfs_dqlock(gq); | |
2271 | XFS_DQHOLD(gq); | |
2272 | xfs_dqunlock(gq); | |
2273 | } | |
1da177e4 LT |
2274 | } |
2275 | if (uq) | |
0b1b213f | 2276 | trace_xfs_dquot_dqalloc(ip); |
1da177e4 LT |
2277 | |
2278 | xfs_iunlock(ip, lockflags); | |
2279 | if (O_udqpp) | |
2280 | *O_udqpp = uq; | |
2281 | else if (uq) | |
2282 | xfs_qm_dqrele(uq); | |
2283 | if (O_gdqpp) | |
2284 | *O_gdqpp = gq; | |
2285 | else if (gq) | |
2286 | xfs_qm_dqrele(gq); | |
014c2544 | 2287 | return 0; |
1da177e4 LT |
2288 | } |
2289 | ||
2290 | /* | |
2291 | * Actually transfer ownership, and do dquot modifications. | |
2292 | * These were already reserved. | |
2293 | */ | |
2294 | xfs_dquot_t * | |
2295 | xfs_qm_vop_chown( | |
2296 | xfs_trans_t *tp, | |
2297 | xfs_inode_t *ip, | |
2298 | xfs_dquot_t **IO_olddq, | |
2299 | xfs_dquot_t *newdq) | |
2300 | { | |
2301 | xfs_dquot_t *prevdq; | |
06d10dd9 NS |
2302 | uint bfield = XFS_IS_REALTIME_INODE(ip) ? |
2303 | XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; | |
2304 | ||
7d095257 | 2305 | |
579aa9ca | 2306 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
2307 | ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); |
2308 | ||
2309 | /* old dquot */ | |
2310 | prevdq = *IO_olddq; | |
2311 | ASSERT(prevdq); | |
2312 | ASSERT(prevdq != newdq); | |
2313 | ||
06d10dd9 NS |
2314 | xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); |
2315 | xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); | |
1da177e4 LT |
2316 | |
2317 | /* the sparkling new dquot */ | |
06d10dd9 NS |
2318 | xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); |
2319 | xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); | |
1da177e4 LT |
2320 | |
2321 | /* | |
2322 | * Take an extra reference, because the inode | |
2323 | * is going to keep this dquot pointer even | |
2324 | * after the trans_commit. | |
2325 | */ | |
2326 | xfs_dqlock(newdq); | |
2327 | XFS_DQHOLD(newdq); | |
2328 | xfs_dqunlock(newdq); | |
2329 | *IO_olddq = newdq; | |
2330 | ||
014c2544 | 2331 | return prevdq; |
1da177e4 LT |
2332 | } |
2333 | ||
2334 | /* | |
c8ad20ff | 2335 | * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). |
1da177e4 LT |
2336 | */ |
2337 | int | |
2338 | xfs_qm_vop_chown_reserve( | |
2339 | xfs_trans_t *tp, | |
2340 | xfs_inode_t *ip, | |
2341 | xfs_dquot_t *udqp, | |
2342 | xfs_dquot_t *gdqp, | |
2343 | uint flags) | |
2344 | { | |
7d095257 | 2345 | xfs_mount_t *mp = ip->i_mount; |
9a2a7de2 | 2346 | uint delblks, blkflags, prjflags = 0; |
1da177e4 | 2347 | xfs_dquot_t *unresudq, *unresgdq, *delblksudq, *delblksgdq; |
7d095257 CH |
2348 | int error; |
2349 | ||
1da177e4 | 2350 | |
579aa9ca | 2351 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); |
1da177e4 LT |
2352 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
2353 | ||
2354 | delblks = ip->i_delayed_blks; | |
2355 | delblksudq = delblksgdq = unresudq = unresgdq = NULL; | |
06d10dd9 NS |
2356 | blkflags = XFS_IS_REALTIME_INODE(ip) ? |
2357 | XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; | |
1da177e4 LT |
2358 | |
2359 | if (XFS_IS_UQUOTA_ON(mp) && udqp && | |
1149d96a | 2360 | ip->i_d.di_uid != (uid_t)be32_to_cpu(udqp->q_core.d_id)) { |
1da177e4 LT |
2361 | delblksudq = udqp; |
2362 | /* | |
2363 | * If there are delayed allocation blocks, then we have to | |
2364 | * unreserve those from the old dquot, and add them to the | |
2365 | * new dquot. | |
2366 | */ | |
2367 | if (delblks) { | |
2368 | ASSERT(ip->i_udquot); | |
2369 | unresudq = ip->i_udquot; | |
2370 | } | |
2371 | } | |
c8ad20ff | 2372 | if (XFS_IS_OQUOTA_ON(ip->i_mount) && gdqp) { |
9a2a7de2 NS |
2373 | if (XFS_IS_PQUOTA_ON(ip->i_mount) && |
2374 | ip->i_d.di_projid != be32_to_cpu(gdqp->q_core.d_id)) | |
2375 | prjflags = XFS_QMOPT_ENOSPC; | |
2376 | ||
2377 | if (prjflags || | |
2378 | (XFS_IS_GQUOTA_ON(ip->i_mount) && | |
2379 | ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id))) { | |
c8ad20ff NS |
2380 | delblksgdq = gdqp; |
2381 | if (delblks) { | |
2382 | ASSERT(ip->i_gdquot); | |
2383 | unresgdq = ip->i_gdquot; | |
2384 | } | |
1da177e4 LT |
2385 | } |
2386 | } | |
2387 | ||
2388 | if ((error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, | |
2389 | delblksudq, delblksgdq, ip->i_d.di_nblocks, 1, | |
9a2a7de2 | 2390 | flags | blkflags | prjflags))) |
1da177e4 LT |
2391 | return (error); |
2392 | ||
2393 | /* | |
2394 | * Do the delayed blks reservations/unreservations now. Since, these | |
2395 | * are done without the help of a transaction, if a reservation fails | |
2396 | * its previous reservations won't be automatically undone by trans | |
2397 | * code. So, we have to do it manually here. | |
2398 | */ | |
2399 | if (delblks) { | |
2400 | /* | |
2401 | * Do the reservations first. Unreservation can't fail. | |
2402 | */ | |
2403 | ASSERT(delblksudq || delblksgdq); | |
2404 | ASSERT(unresudq || unresgdq); | |
2405 | if ((error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
2406 | delblksudq, delblksgdq, (xfs_qcnt_t)delblks, 0, | |
9a2a7de2 | 2407 | flags | blkflags | prjflags))) |
1da177e4 LT |
2408 | return (error); |
2409 | xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
2410 | unresudq, unresgdq, -((xfs_qcnt_t)delblks), 0, | |
06d10dd9 | 2411 | blkflags); |
1da177e4 LT |
2412 | } |
2413 | ||
2414 | return (0); | |
2415 | } | |
2416 | ||
2417 | int | |
2418 | xfs_qm_vop_rename_dqattach( | |
7d095257 | 2419 | struct xfs_inode **i_tab) |
1da177e4 | 2420 | { |
7d095257 CH |
2421 | struct xfs_mount *mp = i_tab[0]->i_mount; |
2422 | int i; | |
1da177e4 | 2423 | |
7d095257 | 2424 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
014c2544 | 2425 | return 0; |
1da177e4 | 2426 | |
7d095257 CH |
2427 | for (i = 0; (i < 4 && i_tab[i]); i++) { |
2428 | struct xfs_inode *ip = i_tab[i]; | |
2429 | int error; | |
2430 | ||
1da177e4 LT |
2431 | /* |
2432 | * Watch out for duplicate entries in the table. | |
2433 | */ | |
7d095257 CH |
2434 | if (i == 0 || ip != i_tab[i-1]) { |
2435 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
1da177e4 LT |
2436 | error = xfs_qm_dqattach(ip, 0); |
2437 | if (error) | |
014c2544 | 2438 | return error; |
1da177e4 LT |
2439 | } |
2440 | } | |
2441 | } | |
014c2544 | 2442 | return 0; |
1da177e4 LT |
2443 | } |
2444 | ||
2445 | void | |
7d095257 CH |
2446 | xfs_qm_vop_create_dqattach( |
2447 | struct xfs_trans *tp, | |
2448 | struct xfs_inode *ip, | |
2449 | struct xfs_dquot *udqp, | |
2450 | struct xfs_dquot *gdqp) | |
1da177e4 | 2451 | { |
7d095257 CH |
2452 | struct xfs_mount *mp = tp->t_mountp; |
2453 | ||
2454 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) | |
1da177e4 LT |
2455 | return; |
2456 | ||
579aa9ca | 2457 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
7d095257 | 2458 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1da177e4 LT |
2459 | |
2460 | if (udqp) { | |
2461 | xfs_dqlock(udqp); | |
2462 | XFS_DQHOLD(udqp); | |
2463 | xfs_dqunlock(udqp); | |
2464 | ASSERT(ip->i_udquot == NULL); | |
2465 | ip->i_udquot = udqp; | |
7d095257 | 2466 | ASSERT(XFS_IS_UQUOTA_ON(mp)); |
1149d96a | 2467 | ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); |
1da177e4 LT |
2468 | xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); |
2469 | } | |
2470 | if (gdqp) { | |
2471 | xfs_dqlock(gdqp); | |
2472 | XFS_DQHOLD(gdqp); | |
2473 | xfs_dqunlock(gdqp); | |
2474 | ASSERT(ip->i_gdquot == NULL); | |
2475 | ip->i_gdquot = gdqp; | |
7d095257 CH |
2476 | ASSERT(XFS_IS_OQUOTA_ON(mp)); |
2477 | ASSERT((XFS_IS_GQUOTA_ON(mp) ? | |
ee2a4f7c NS |
2478 | ip->i_d.di_gid : ip->i_d.di_projid) == |
2479 | be32_to_cpu(gdqp->q_core.d_id)); | |
1da177e4 LT |
2480 | xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); |
2481 | } | |
2482 | } | |
2483 |