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 *); |
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 | 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) { | |
0b932ccc | 83 | xfs_debug(mp, " %d. \"%d (%s)\" " |
3a25404b DC |
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 | |
0b932ccc | 208 | xfs_debug(dqp->q_mount, "FREELIST destroy 0x%p", dqp); |
3a8406f6 DC |
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) { | |
0b932ccc | 344 | xfs_notice(mp, "Cannot turn on quotas for realtime filesystem"); |
1da177e4 LT |
345 | mp->m_qflags = 0; |
346 | goto write_changes; | |
347 | } | |
348 | ||
1da177e4 | 349 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
155ffd07 | 350 | |
1da177e4 LT |
351 | /* |
352 | * Allocate the quotainfo structure inside the mount struct, and | |
353 | * create quotainode(s), and change/rev superblock if necessary. | |
354 | */ | |
53aa7915 DC |
355 | error = xfs_qm_init_quotainfo(mp); |
356 | if (error) { | |
1da177e4 LT |
357 | /* |
358 | * We must turn off quotas. | |
359 | */ | |
360 | ASSERT(mp->m_quotainfo == NULL); | |
361 | mp->m_qflags = 0; | |
362 | goto write_changes; | |
363 | } | |
364 | /* | |
365 | * If any of the quotas are not consistent, do a quotacheck. | |
366 | */ | |
4249023a | 367 | if (XFS_QM_NEED_QUOTACHECK(mp)) { |
53aa7915 DC |
368 | error = xfs_qm_quotacheck(mp); |
369 | if (error) { | |
370 | /* Quotacheck failed and disabled quotas. */ | |
371 | return; | |
1da177e4 | 372 | } |
1da177e4 | 373 | } |
646d5bda DD |
374 | /* |
375 | * If one type of quotas is off, then it will lose its | |
376 | * quotachecked status, since we won't be doing accounting for | |
377 | * that type anymore. | |
378 | */ | |
53aa7915 | 379 | if (!XFS_IS_UQUOTA_ON(mp)) |
646d5bda | 380 | mp->m_qflags &= ~XFS_UQUOTA_CHKD; |
53aa7915 | 381 | if (!(XFS_IS_GQUOTA_ON(mp) || XFS_IS_PQUOTA_ON(mp))) |
646d5bda | 382 | mp->m_qflags &= ~XFS_OQUOTA_CHKD; |
155ffd07 | 383 | |
1da177e4 LT |
384 | write_changes: |
385 | /* | |
3685c2a1 | 386 | * We actually don't have to acquire the m_sb_lock at all. |
1da177e4 LT |
387 | * This can only be called from mount, and that's single threaded. XXX |
388 | */ | |
3685c2a1 | 389 | spin_lock(&mp->m_sb_lock); |
1da177e4 LT |
390 | sbf = mp->m_sb.sb_qflags; |
391 | mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL; | |
3685c2a1 | 392 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
393 | |
394 | if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { | |
395 | if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) { | |
396 | /* | |
397 | * We could only have been turning quotas off. | |
398 | * We aren't in very good shape actually because | |
399 | * the incore structures are convinced that quotas are | |
400 | * off, but the on disk superblock doesn't know that ! | |
401 | */ | |
402 | ASSERT(!(XFS_IS_QUOTA_RUNNING(mp))); | |
53487786 DC |
403 | xfs_alert(mp, "%s: Superblock update failed!", |
404 | __func__); | |
1da177e4 LT |
405 | } |
406 | } | |
407 | ||
408 | if (error) { | |
53487786 | 409 | xfs_warn(mp, "Failed to initialize disk quotas."); |
7d095257 | 410 | return; |
1da177e4 | 411 | } |
7d095257 CH |
412 | |
413 | #ifdef QUOTADEBUG | |
414 | if (XFS_IS_QUOTA_ON(mp)) | |
415 | xfs_qm_internalqcheck(mp); | |
416 | #endif | |
1da177e4 LT |
417 | } |
418 | ||
419 | /* | |
420 | * Called from the vfsops layer. | |
421 | */ | |
e57481dc | 422 | void |
1da177e4 LT |
423 | xfs_qm_unmount_quotas( |
424 | xfs_mount_t *mp) | |
425 | { | |
1da177e4 LT |
426 | /* |
427 | * Release the dquots that root inode, et al might be holding, | |
428 | * before we flush quotas and blow away the quotainfo structure. | |
429 | */ | |
430 | ASSERT(mp->m_rootip); | |
431 | xfs_qm_dqdetach(mp->m_rootip); | |
432 | if (mp->m_rbmip) | |
433 | xfs_qm_dqdetach(mp->m_rbmip); | |
434 | if (mp->m_rsumip) | |
435 | xfs_qm_dqdetach(mp->m_rsumip); | |
436 | ||
437 | /* | |
e57481dc | 438 | * Release the quota inodes. |
1da177e4 | 439 | */ |
1da177e4 | 440 | if (mp->m_quotainfo) { |
e57481dc CH |
441 | if (mp->m_quotainfo->qi_uquotaip) { |
442 | IRELE(mp->m_quotainfo->qi_uquotaip); | |
443 | mp->m_quotainfo->qi_uquotaip = NULL; | |
1da177e4 | 444 | } |
e57481dc CH |
445 | if (mp->m_quotainfo->qi_gquotaip) { |
446 | IRELE(mp->m_quotainfo->qi_gquotaip); | |
447 | mp->m_quotainfo->qi_gquotaip = NULL; | |
1da177e4 LT |
448 | } |
449 | } | |
1da177e4 LT |
450 | } |
451 | ||
452 | /* | |
453 | * Flush all dquots of the given file system to disk. The dquots are | |
454 | * _not_ purged from memory here, just their data written to disk. | |
455 | */ | |
ba0f32d4 | 456 | STATIC int |
1da177e4 | 457 | xfs_qm_dqflush_all( |
8a7b8a89 CH |
458 | struct xfs_mount *mp, |
459 | int sync_mode) | |
1da177e4 | 460 | { |
8a7b8a89 CH |
461 | struct xfs_quotainfo *q = mp->m_quotainfo; |
462 | int recl; | |
463 | struct xfs_dquot *dqp; | |
8a7b8a89 | 464 | int error; |
1da177e4 | 465 | |
8a7b8a89 | 466 | if (!q) |
014c2544 | 467 | return 0; |
1da177e4 | 468 | again: |
8a7b8a89 CH |
469 | mutex_lock(&q->qi_dqlist_lock); |
470 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 LT |
471 | xfs_dqlock(dqp); |
472 | if (! XFS_DQ_IS_DIRTY(dqp)) { | |
473 | xfs_dqunlock(dqp); | |
474 | continue; | |
475 | } | |
0b1b213f | 476 | |
1da177e4 | 477 | /* XXX a sentinel would be better */ |
8a7b8a89 | 478 | recl = q->qi_dqreclaims; |
e1f49cf2 | 479 | if (!xfs_dqflock_nowait(dqp)) { |
1da177e4 LT |
480 | /* |
481 | * If we can't grab the flush lock then check | |
482 | * to see if the dquot has been flushed delayed | |
483 | * write. If so, grab its buffer and send it | |
484 | * out immediately. We'll be able to acquire | |
485 | * the flush lock when the I/O completes. | |
486 | */ | |
487 | xfs_qm_dqflock_pushbuf_wait(dqp); | |
488 | } | |
489 | /* | |
490 | * Let go of the mplist lock. We don't want to hold it | |
491 | * across a disk write. | |
492 | */ | |
8a7b8a89 | 493 | mutex_unlock(&q->qi_dqlist_lock); |
20026d92 | 494 | error = xfs_qm_dqflush(dqp, sync_mode); |
1da177e4 LT |
495 | xfs_dqunlock(dqp); |
496 | if (error) | |
014c2544 | 497 | return error; |
1da177e4 | 498 | |
8a7b8a89 CH |
499 | mutex_lock(&q->qi_dqlist_lock); |
500 | if (recl != q->qi_dqreclaims) { | |
501 | mutex_unlock(&q->qi_dqlist_lock); | |
1da177e4 LT |
502 | /* XXX restart limit */ |
503 | goto again; | |
504 | } | |
505 | } | |
506 | ||
8a7b8a89 | 507 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 | 508 | /* return ! busy */ |
014c2544 | 509 | return 0; |
1da177e4 LT |
510 | } |
511 | /* | |
512 | * Release the group dquot pointers the user dquots may be | |
513 | * carrying around as a hint. mplist is locked on entry and exit. | |
514 | */ | |
515 | STATIC void | |
516 | xfs_qm_detach_gdquots( | |
8a7b8a89 | 517 | struct xfs_mount *mp) |
1da177e4 | 518 | { |
8a7b8a89 CH |
519 | struct xfs_quotainfo *q = mp->m_quotainfo; |
520 | struct xfs_dquot *dqp, *gdqp; | |
521 | int nrecl; | |
1da177e4 LT |
522 | |
523 | again: | |
8a7b8a89 CH |
524 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
525 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 LT |
526 | xfs_dqlock(dqp); |
527 | if ((gdqp = dqp->q_gdquot)) { | |
528 | xfs_dqlock(gdqp); | |
529 | dqp->q_gdquot = NULL; | |
530 | } | |
531 | xfs_dqunlock(dqp); | |
532 | ||
533 | if (gdqp) { | |
534 | /* | |
535 | * Can't hold the mplist lock across a dqput. | |
536 | * XXXmust convert to marker based iterations here. | |
537 | */ | |
8a7b8a89 CH |
538 | nrecl = q->qi_dqreclaims; |
539 | mutex_unlock(&q->qi_dqlist_lock); | |
1da177e4 LT |
540 | xfs_qm_dqput(gdqp); |
541 | ||
8a7b8a89 CH |
542 | mutex_lock(&q->qi_dqlist_lock); |
543 | if (nrecl != q->qi_dqreclaims) | |
1da177e4 LT |
544 | goto again; |
545 | } | |
1da177e4 LT |
546 | } |
547 | } | |
548 | ||
549 | /* | |
550 | * Go through all the incore dquots of this file system and take them | |
551 | * off the mplist and hashlist, if the dquot type matches the dqtype | |
552 | * parameter. This is used when turning off quota accounting for | |
553 | * users and/or groups, as well as when the filesystem is unmounting. | |
554 | */ | |
555 | STATIC int | |
556 | xfs_qm_dqpurge_int( | |
8a7b8a89 CH |
557 | struct xfs_mount *mp, |
558 | uint flags) | |
1da177e4 | 559 | { |
8a7b8a89 CH |
560 | struct xfs_quotainfo *q = mp->m_quotainfo; |
561 | struct xfs_dquot *dqp, *n; | |
562 | uint dqtype; | |
563 | int nrecl; | |
564 | int nmisses; | |
1da177e4 | 565 | |
8a7b8a89 | 566 | if (!q) |
014c2544 | 567 | return 0; |
1da177e4 LT |
568 | |
569 | dqtype = (flags & XFS_QMOPT_UQUOTA) ? XFS_DQ_USER : 0; | |
c8ad20ff | 570 | dqtype |= (flags & XFS_QMOPT_PQUOTA) ? XFS_DQ_PROJ : 0; |
1da177e4 LT |
571 | dqtype |= (flags & XFS_QMOPT_GQUOTA) ? XFS_DQ_GROUP : 0; |
572 | ||
8a7b8a89 | 573 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
574 | |
575 | /* | |
576 | * In the first pass through all incore dquots of this filesystem, | |
577 | * we release the group dquot pointers the user dquots may be | |
578 | * carrying around as a hint. We need to do this irrespective of | |
579 | * what's being turned off. | |
580 | */ | |
581 | xfs_qm_detach_gdquots(mp); | |
582 | ||
583 | again: | |
584 | nmisses = 0; | |
8a7b8a89 | 585 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
1da177e4 LT |
586 | /* |
587 | * Try to get rid of all of the unwanted dquots. The idea is to | |
588 | * get them off mplist and hashlist, but leave them on freelist. | |
589 | */ | |
8a7b8a89 | 590 | list_for_each_entry_safe(dqp, n, &q->qi_dqlist, q_mplist) { |
1da177e4 LT |
591 | /* |
592 | * It's OK to look at the type without taking dqlock here. | |
593 | * We're holding the mplist lock here, and that's needed for | |
594 | * a dqreclaim. | |
595 | */ | |
3a25404b | 596 | if ((dqp->dq_flags & dqtype) == 0) |
1da177e4 | 597 | continue; |
1da177e4 | 598 | |
c9a192dc | 599 | if (!mutex_trylock(&dqp->q_hash->qh_lock)) { |
8a7b8a89 CH |
600 | nrecl = q->qi_dqreclaims; |
601 | mutex_unlock(&q->qi_dqlist_lock); | |
c9a192dc | 602 | mutex_lock(&dqp->q_hash->qh_lock); |
8a7b8a89 | 603 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
604 | |
605 | /* | |
606 | * XXXTheoretically, we can get into a very long | |
607 | * ping pong game here. | |
608 | * No one can be adding dquots to the mplist at | |
609 | * this point, but somebody might be taking things off. | |
610 | */ | |
8a7b8a89 | 611 | if (nrecl != q->qi_dqreclaims) { |
c9a192dc | 612 | mutex_unlock(&dqp->q_hash->qh_lock); |
1da177e4 LT |
613 | goto again; |
614 | } | |
615 | } | |
616 | ||
617 | /* | |
618 | * Take the dquot off the mplist and hashlist. It may remain on | |
619 | * freelist in INACTIVE state. | |
620 | */ | |
4f0e8a98 | 621 | nmisses += xfs_qm_dqpurge(dqp); |
1da177e4 | 622 | } |
8a7b8a89 | 623 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 LT |
624 | return nmisses; |
625 | } | |
626 | ||
627 | int | |
628 | xfs_qm_dqpurge_all( | |
629 | xfs_mount_t *mp, | |
630 | uint flags) | |
631 | { | |
632 | int ndquots; | |
633 | ||
634 | /* | |
635 | * Purge the dquot cache. | |
636 | * None of the dquots should really be busy at this point. | |
637 | */ | |
638 | if (mp->m_quotainfo) { | |
639 | while ((ndquots = xfs_qm_dqpurge_int(mp, flags))) { | |
640 | delay(ndquots * 10); | |
641 | } | |
642 | } | |
643 | return 0; | |
644 | } | |
645 | ||
646 | STATIC int | |
647 | xfs_qm_dqattach_one( | |
648 | xfs_inode_t *ip, | |
649 | xfs_dqid_t id, | |
650 | uint type, | |
651 | uint doalloc, | |
1da177e4 LT |
652 | xfs_dquot_t *udqhint, /* hint */ |
653 | xfs_dquot_t **IO_idqpp) | |
654 | { | |
655 | xfs_dquot_t *dqp; | |
656 | int error; | |
657 | ||
579aa9ca | 658 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 659 | error = 0; |
8e9b6e7f | 660 | |
1da177e4 LT |
661 | /* |
662 | * See if we already have it in the inode itself. IO_idqpp is | |
663 | * &i_udquot or &i_gdquot. This made the code look weird, but | |
664 | * made the logic a lot simpler. | |
665 | */ | |
8e9b6e7f CH |
666 | dqp = *IO_idqpp; |
667 | if (dqp) { | |
0b1b213f | 668 | trace_xfs_dqattach_found(dqp); |
8e9b6e7f | 669 | return 0; |
1da177e4 LT |
670 | } |
671 | ||
672 | /* | |
673 | * udqhint is the i_udquot field in inode, and is non-NULL only | |
c8ad20ff | 674 | * when the type arg is group/project. Its purpose is to save a |
1da177e4 LT |
675 | * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside |
676 | * the user dquot. | |
677 | */ | |
8e9b6e7f CH |
678 | if (udqhint) { |
679 | ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); | |
1da177e4 LT |
680 | xfs_dqlock(udqhint); |
681 | ||
8e9b6e7f CH |
682 | /* |
683 | * No need to take dqlock to look at the id. | |
684 | * | |
685 | * The ID can't change until it gets reclaimed, and it won't | |
686 | * be reclaimed as long as we have a ref from inode and we | |
687 | * hold the ilock. | |
688 | */ | |
689 | dqp = udqhint->q_gdquot; | |
690 | if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) { | |
691 | xfs_dqlock(dqp); | |
692 | XFS_DQHOLD(dqp); | |
693 | ASSERT(*IO_idqpp == NULL); | |
694 | *IO_idqpp = dqp; | |
695 | ||
1da177e4 LT |
696 | xfs_dqunlock(dqp); |
697 | xfs_dqunlock(udqhint); | |
8e9b6e7f | 698 | return 0; |
1da177e4 | 699 | } |
8e9b6e7f CH |
700 | |
701 | /* | |
702 | * We can't hold a dquot lock when we call the dqget code. | |
703 | * We'll deadlock in no time, because of (not conforming to) | |
704 | * lock ordering - the inodelock comes before any dquot lock, | |
705 | * and we may drop and reacquire the ilock in xfs_qm_dqget(). | |
706 | */ | |
1da177e4 | 707 | xfs_dqunlock(udqhint); |
8e9b6e7f CH |
708 | } |
709 | ||
1da177e4 LT |
710 | /* |
711 | * Find the dquot from somewhere. This bumps the | |
712 | * reference count of dquot and returns it locked. | |
713 | * This can return ENOENT if dquot didn't exist on | |
714 | * disk and we didn't ask it to allocate; | |
715 | * ESRCH if quotas got turned off suddenly. | |
716 | */ | |
8e9b6e7f CH |
717 | error = xfs_qm_dqget(ip->i_mount, ip, id, type, XFS_QMOPT_DOWARN, &dqp); |
718 | if (error) | |
719 | return error; | |
1da177e4 | 720 | |
0b1b213f | 721 | trace_xfs_dqattach_get(dqp); |
8e9b6e7f | 722 | |
1da177e4 LT |
723 | /* |
724 | * dqget may have dropped and re-acquired the ilock, but it guarantees | |
725 | * that the dquot returned is the one that should go in the inode. | |
726 | */ | |
727 | *IO_idqpp = dqp; | |
8e9b6e7f CH |
728 | xfs_dqunlock(dqp); |
729 | return 0; | |
1da177e4 LT |
730 | } |
731 | ||
732 | ||
733 | /* | |
734 | * Given a udquot and gdquot, attach a ptr to the group dquot in the | |
735 | * udquot as a hint for future lookups. The idea sounds simple, but the | |
736 | * execution isn't, because the udquot might have a group dquot attached | |
c41564b5 | 737 | * already and getting rid of that gets us into lock ordering constraints. |
1da177e4 LT |
738 | * The process is complicated more by the fact that the dquots may or may not |
739 | * be locked on entry. | |
740 | */ | |
741 | STATIC void | |
742 | xfs_qm_dqattach_grouphint( | |
743 | xfs_dquot_t *udq, | |
8e9b6e7f | 744 | xfs_dquot_t *gdq) |
1da177e4 LT |
745 | { |
746 | xfs_dquot_t *tmp; | |
747 | ||
8e9b6e7f | 748 | xfs_dqlock(udq); |
1da177e4 LT |
749 | |
750 | if ((tmp = udq->q_gdquot)) { | |
751 | if (tmp == gdq) { | |
8e9b6e7f | 752 | xfs_dqunlock(udq); |
1da177e4 LT |
753 | return; |
754 | } | |
755 | ||
756 | udq->q_gdquot = NULL; | |
757 | /* | |
758 | * We can't keep any dqlocks when calling dqrele, | |
759 | * because the freelist lock comes before dqlocks. | |
760 | */ | |
761 | xfs_dqunlock(udq); | |
1da177e4 LT |
762 | /* |
763 | * we took a hard reference once upon a time in dqget, | |
764 | * so give it back when the udquot no longer points at it | |
765 | * dqput() does the unlocking of the dquot. | |
766 | */ | |
767 | xfs_qm_dqrele(tmp); | |
768 | ||
769 | xfs_dqlock(udq); | |
770 | xfs_dqlock(gdq); | |
771 | ||
772 | } else { | |
773 | ASSERT(XFS_DQ_IS_LOCKED(udq)); | |
8e9b6e7f | 774 | xfs_dqlock(gdq); |
1da177e4 LT |
775 | } |
776 | ||
777 | ASSERT(XFS_DQ_IS_LOCKED(udq)); | |
778 | ASSERT(XFS_DQ_IS_LOCKED(gdq)); | |
779 | /* | |
780 | * Somebody could have attached a gdquot here, | |
781 | * when we dropped the uqlock. If so, just do nothing. | |
782 | */ | |
783 | if (udq->q_gdquot == NULL) { | |
784 | XFS_DQHOLD(gdq); | |
785 | udq->q_gdquot = gdq; | |
786 | } | |
8e9b6e7f CH |
787 | |
788 | xfs_dqunlock(gdq); | |
789 | xfs_dqunlock(udq); | |
1da177e4 LT |
790 | } |
791 | ||
792 | ||
793 | /* | |
c8ad20ff NS |
794 | * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON |
795 | * into account. | |
1da177e4 | 796 | * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. |
1da177e4 LT |
797 | * Inode may get unlocked and relocked in here, and the caller must deal with |
798 | * the consequences. | |
799 | */ | |
800 | int | |
7d095257 | 801 | xfs_qm_dqattach_locked( |
1da177e4 LT |
802 | xfs_inode_t *ip, |
803 | uint flags) | |
804 | { | |
805 | xfs_mount_t *mp = ip->i_mount; | |
806 | uint nquotas = 0; | |
807 | int error = 0; | |
808 | ||
7d095257 CH |
809 | if (!XFS_IS_QUOTA_RUNNING(mp) || |
810 | !XFS_IS_QUOTA_ON(mp) || | |
811 | !XFS_NOT_DQATTACHED(mp, ip) || | |
812 | ip->i_ino == mp->m_sb.sb_uquotino || | |
813 | ip->i_ino == mp->m_sb.sb_gquotino) | |
014c2544 | 814 | return 0; |
1da177e4 | 815 | |
7d095257 | 816 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
817 | |
818 | if (XFS_IS_UQUOTA_ON(mp)) { | |
819 | error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, | |
820 | flags & XFS_QMOPT_DQALLOC, | |
1da177e4 LT |
821 | NULL, &ip->i_udquot); |
822 | if (error) | |
823 | goto done; | |
824 | nquotas++; | |
825 | } | |
579aa9ca CH |
826 | |
827 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); | |
c8ad20ff NS |
828 | if (XFS_IS_OQUOTA_ON(mp)) { |
829 | error = XFS_IS_GQUOTA_ON(mp) ? | |
830 | xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, | |
831 | flags & XFS_QMOPT_DQALLOC, | |
c8ad20ff | 832 | ip->i_udquot, &ip->i_gdquot) : |
6743099c | 833 | xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ, |
1da177e4 | 834 | flags & XFS_QMOPT_DQALLOC, |
1da177e4 LT |
835 | ip->i_udquot, &ip->i_gdquot); |
836 | /* | |
837 | * Don't worry about the udquot that we may have | |
838 | * attached above. It'll get detached, if not already. | |
839 | */ | |
840 | if (error) | |
841 | goto done; | |
842 | nquotas++; | |
843 | } | |
844 | ||
845 | /* | |
846 | * Attach this group quota to the user quota as a hint. | |
847 | * This WON'T, in general, result in a thrash. | |
848 | */ | |
849 | if (nquotas == 2) { | |
579aa9ca | 850 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
851 | ASSERT(ip->i_udquot); |
852 | ASSERT(ip->i_gdquot); | |
853 | ||
854 | /* | |
855 | * We may or may not have the i_udquot locked at this point, | |
856 | * but this check is OK since we don't depend on the i_gdquot to | |
857 | * be accurate 100% all the time. It is just a hint, and this | |
858 | * will succeed in general. | |
859 | */ | |
860 | if (ip->i_udquot->q_gdquot == ip->i_gdquot) | |
861 | goto done; | |
862 | /* | |
863 | * Attach i_gdquot to the gdquot hint inside the i_udquot. | |
864 | */ | |
8e9b6e7f | 865 | xfs_qm_dqattach_grouphint(ip->i_udquot, ip->i_gdquot); |
1da177e4 LT |
866 | } |
867 | ||
7d095257 | 868 | done: |
1da177e4 LT |
869 | #ifdef QUOTADEBUG |
870 | if (! error) { | |
1da177e4 LT |
871 | if (XFS_IS_UQUOTA_ON(mp)) |
872 | ASSERT(ip->i_udquot); | |
c8ad20ff | 873 | if (XFS_IS_OQUOTA_ON(mp)) |
1da177e4 LT |
874 | ASSERT(ip->i_gdquot); |
875 | } | |
7d095257 | 876 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 877 | #endif |
7d095257 CH |
878 | return error; |
879 | } | |
1da177e4 | 880 | |
7d095257 CH |
881 | int |
882 | xfs_qm_dqattach( | |
883 | struct xfs_inode *ip, | |
884 | uint flags) | |
885 | { | |
886 | int error; | |
887 | ||
888 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
889 | error = xfs_qm_dqattach_locked(ip, flags); | |
890 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1da177e4 | 891 | |
014c2544 | 892 | return error; |
1da177e4 LT |
893 | } |
894 | ||
895 | /* | |
896 | * Release dquots (and their references) if any. | |
897 | * The inode should be locked EXCL except when this's called by | |
898 | * xfs_ireclaim. | |
899 | */ | |
900 | void | |
901 | xfs_qm_dqdetach( | |
902 | xfs_inode_t *ip) | |
903 | { | |
904 | if (!(ip->i_udquot || ip->i_gdquot)) | |
905 | return; | |
906 | ||
0b1b213f CH |
907 | trace_xfs_dquot_dqdetach(ip); |
908 | ||
1da177e4 LT |
909 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_uquotino); |
910 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_gquotino); | |
1da177e4 LT |
911 | if (ip->i_udquot) { |
912 | xfs_qm_dqrele(ip->i_udquot); | |
913 | ip->i_udquot = NULL; | |
914 | } | |
915 | if (ip->i_gdquot) { | |
916 | xfs_qm_dqrele(ip->i_gdquot); | |
917 | ip->i_gdquot = NULL; | |
918 | } | |
919 | } | |
920 | ||
1da177e4 LT |
921 | int |
922 | xfs_qm_sync( | |
8a7b8a89 CH |
923 | struct xfs_mount *mp, |
924 | int flags) | |
1da177e4 | 925 | { |
8a7b8a89 CH |
926 | struct xfs_quotainfo *q = mp->m_quotainfo; |
927 | int recl, restarts; | |
928 | struct xfs_dquot *dqp; | |
929 | int error; | |
1da177e4 | 930 | |
7d095257 | 931 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
d757762b DD |
932 | return 0; |
933 | ||
1da177e4 | 934 | restarts = 0; |
1da177e4 LT |
935 | |
936 | again: | |
8a7b8a89 | 937 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
938 | /* |
939 | * dqpurge_all() also takes the mplist lock and iterate thru all dquots | |
940 | * in quotaoff. However, if the QUOTA_ACTIVE bits are not cleared | |
941 | * when we have the mplist lock, we know that dquots will be consistent | |
942 | * as long as we have it locked. | |
943 | */ | |
3a25404b | 944 | if (!XFS_IS_QUOTA_ON(mp)) { |
8a7b8a89 | 945 | mutex_unlock(&q->qi_dqlist_lock); |
014c2544 | 946 | return 0; |
1da177e4 | 947 | } |
8a7b8a89 CH |
948 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
949 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 LT |
950 | /* |
951 | * If this is vfs_sync calling, then skip the dquots that | |
952 | * don't 'seem' to be dirty. ie. don't acquire dqlock. | |
953 | * This is very similar to what xfs_sync does with inodes. | |
954 | */ | |
8b5403a6 CH |
955 | if (flags & SYNC_TRYLOCK) { |
956 | if (!XFS_DQ_IS_DIRTY(dqp)) | |
1da177e4 | 957 | continue; |
8b5403a6 | 958 | if (!xfs_qm_dqlock_nowait(dqp)) |
1da177e4 LT |
959 | continue; |
960 | } else { | |
961 | xfs_dqlock(dqp); | |
962 | } | |
963 | ||
964 | /* | |
965 | * Now, find out for sure if this dquot is dirty or not. | |
966 | */ | |
967 | if (! XFS_DQ_IS_DIRTY(dqp)) { | |
968 | xfs_dqunlock(dqp); | |
969 | continue; | |
970 | } | |
971 | ||
972 | /* XXX a sentinel would be better */ | |
8a7b8a89 | 973 | recl = q->qi_dqreclaims; |
e1f49cf2 | 974 | if (!xfs_dqflock_nowait(dqp)) { |
8b5403a6 | 975 | if (flags & SYNC_TRYLOCK) { |
1da177e4 LT |
976 | xfs_dqunlock(dqp); |
977 | continue; | |
978 | } | |
979 | /* | |
980 | * If we can't grab the flush lock then if the caller | |
c41564b5 | 981 | * really wanted us to give this our best shot, so |
1da177e4 LT |
982 | * see if we can give a push to the buffer before we wait |
983 | * on the flush lock. At this point, we know that | |
c41564b5 | 984 | * even though the dquot is being flushed, |
1da177e4 LT |
985 | * it has (new) dirty data. |
986 | */ | |
987 | xfs_qm_dqflock_pushbuf_wait(dqp); | |
988 | } | |
989 | /* | |
990 | * Let go of the mplist lock. We don't want to hold it | |
991 | * across a disk write | |
992 | */ | |
8a7b8a89 | 993 | mutex_unlock(&q->qi_dqlist_lock); |
20026d92 | 994 | error = xfs_qm_dqflush(dqp, flags); |
1da177e4 LT |
995 | xfs_dqunlock(dqp); |
996 | if (error && XFS_FORCED_SHUTDOWN(mp)) | |
014c2544 | 997 | return 0; /* Need to prevent umount failure */ |
1da177e4 | 998 | else if (error) |
014c2544 | 999 | return error; |
1da177e4 | 1000 | |
8a7b8a89 CH |
1001 | mutex_lock(&q->qi_dqlist_lock); |
1002 | if (recl != q->qi_dqreclaims) { | |
1da177e4 LT |
1003 | if (++restarts >= XFS_QM_SYNC_MAX_RESTARTS) |
1004 | break; | |
1005 | ||
8a7b8a89 | 1006 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 LT |
1007 | goto again; |
1008 | } | |
1009 | } | |
1010 | ||
8a7b8a89 | 1011 | mutex_unlock(&q->qi_dqlist_lock); |
014c2544 | 1012 | return 0; |
1da177e4 LT |
1013 | } |
1014 | ||
a4edd1da CH |
1015 | /* |
1016 | * The hash chains and the mplist use the same xfs_dqhash structure as | |
1017 | * their list head, but we can take the mplist qh_lock and one of the | |
1018 | * hash qh_locks at the same time without any problem as they aren't | |
1019 | * related. | |
1020 | */ | |
1021 | static struct lock_class_key xfs_quota_mplist_class; | |
1da177e4 LT |
1022 | |
1023 | /* | |
1024 | * This initializes all the quota information that's kept in the | |
1025 | * mount structure | |
1026 | */ | |
ba0f32d4 | 1027 | STATIC int |
1da177e4 LT |
1028 | xfs_qm_init_quotainfo( |
1029 | xfs_mount_t *mp) | |
1030 | { | |
1031 | xfs_quotainfo_t *qinf; | |
1032 | int error; | |
1033 | xfs_dquot_t *dqp; | |
1034 | ||
1035 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
1036 | ||
1037 | /* | |
1038 | * Tell XQM that we exist as soon as possible. | |
1039 | */ | |
1040 | if ((error = xfs_qm_hold_quotafs_ref(mp))) { | |
014c2544 | 1041 | return error; |
1da177e4 LT |
1042 | } |
1043 | ||
1044 | qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); | |
1045 | ||
1046 | /* | |
1047 | * See if quotainodes are setup, and if not, allocate them, | |
1048 | * and change the superblock accordingly. | |
1049 | */ | |
1050 | if ((error = xfs_qm_init_quotainos(mp))) { | |
f0e2d93c | 1051 | kmem_free(qinf); |
1da177e4 | 1052 | mp->m_quotainfo = NULL; |
014c2544 | 1053 | return error; |
1da177e4 LT |
1054 | } |
1055 | ||
3a25404b DC |
1056 | INIT_LIST_HEAD(&qinf->qi_dqlist); |
1057 | mutex_init(&qinf->qi_dqlist_lock); | |
1058 | lockdep_set_class(&qinf->qi_dqlist_lock, &xfs_quota_mplist_class); | |
a4edd1da | 1059 | |
1da177e4 LT |
1060 | qinf->qi_dqreclaims = 0; |
1061 | ||
1062 | /* mutex used to serialize quotaoffs */ | |
794ee1ba | 1063 | mutex_init(&qinf->qi_quotaofflock); |
1da177e4 LT |
1064 | |
1065 | /* Precalc some constants */ | |
1066 | qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
1067 | ASSERT(qinf->qi_dqchunklen); | |
1068 | qinf->qi_dqperchunk = BBTOB(qinf->qi_dqchunklen); | |
1069 | do_div(qinf->qi_dqperchunk, sizeof(xfs_dqblk_t)); | |
1070 | ||
1071 | mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); | |
1072 | ||
1073 | /* | |
1074 | * We try to get the limits from the superuser's limits fields. | |
1075 | * This is quite hacky, but it is standard quota practice. | |
1076 | * We look at the USR dquot with id == 0 first, but if user quotas | |
1077 | * are not enabled we goto the GRP dquot with id == 0. | |
1078 | * We don't really care to keep separate default limits for user | |
1079 | * and group quotas, at least not at this point. | |
1080 | */ | |
1081 | error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)0, | |
c8ad20ff NS |
1082 | XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : |
1083 | (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : | |
1084 | XFS_DQ_PROJ), | |
1da177e4 LT |
1085 | XFS_QMOPT_DQSUSER|XFS_QMOPT_DOWARN, |
1086 | &dqp); | |
1087 | if (! error) { | |
1088 | xfs_disk_dquot_t *ddqp = &dqp->q_core; | |
1089 | ||
1090 | /* | |
1091 | * The warnings and timers set the grace period given to | |
1092 | * a user or group before he or she can not perform any | |
1093 | * more writing. If it is zero, a default is used. | |
1094 | */ | |
1149d96a CH |
1095 | qinf->qi_btimelimit = ddqp->d_btimer ? |
1096 | be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; | |
1097 | qinf->qi_itimelimit = ddqp->d_itimer ? | |
1098 | be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; | |
1099 | qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? | |
1100 | be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; | |
1101 | qinf->qi_bwarnlimit = ddqp->d_bwarns ? | |
1102 | be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; | |
1103 | qinf->qi_iwarnlimit = ddqp->d_iwarns ? | |
1104 | be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; | |
1105 | qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? | |
1106 | be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; | |
1107 | qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); | |
1108 | qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); | |
1109 | qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); | |
1110 | qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); | |
1111 | qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); | |
1112 | qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); | |
1da177e4 LT |
1113 | |
1114 | /* | |
1115 | * We sent the XFS_QMOPT_DQSUSER flag to dqget because | |
1116 | * we don't want this dquot cached. We haven't done a | |
1117 | * quotacheck yet, and quotacheck doesn't like incore dquots. | |
1118 | */ | |
1119 | xfs_qm_dqdestroy(dqp); | |
1120 | } else { | |
1121 | qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; | |
1122 | qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; | |
1123 | qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; | |
1124 | qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; | |
1125 | qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; | |
06d10dd9 | 1126 | qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; |
1da177e4 LT |
1127 | } |
1128 | ||
014c2544 | 1129 | return 0; |
1da177e4 LT |
1130 | } |
1131 | ||
1132 | ||
1133 | /* | |
1134 | * Gets called when unmounting a filesystem or when all quotas get | |
1135 | * turned off. | |
1136 | * This purges the quota inodes, destroys locks and frees itself. | |
1137 | */ | |
1138 | void | |
1139 | xfs_qm_destroy_quotainfo( | |
1140 | xfs_mount_t *mp) | |
1141 | { | |
1142 | xfs_quotainfo_t *qi; | |
1143 | ||
1144 | qi = mp->m_quotainfo; | |
1145 | ASSERT(qi != NULL); | |
1146 | ASSERT(xfs_Gqm != NULL); | |
1147 | ||
1148 | /* | |
1149 | * Release the reference that XQM kept, so that we know | |
1150 | * when the XQM structure should be freed. We cannot assume | |
1151 | * that xfs_Gqm is non-null after this point. | |
1152 | */ | |
1153 | xfs_qm_rele_quotafs_ref(mp); | |
1154 | ||
3a25404b DC |
1155 | ASSERT(list_empty(&qi->qi_dqlist)); |
1156 | mutex_destroy(&qi->qi_dqlist_lock); | |
1da177e4 LT |
1157 | |
1158 | if (qi->qi_uquotaip) { | |
26cc0021 | 1159 | IRELE(qi->qi_uquotaip); |
1da177e4 LT |
1160 | qi->qi_uquotaip = NULL; /* paranoia */ |
1161 | } | |
1162 | if (qi->qi_gquotaip) { | |
26cc0021 | 1163 | IRELE(qi->qi_gquotaip); |
1da177e4 LT |
1164 | qi->qi_gquotaip = NULL; |
1165 | } | |
1166 | mutex_destroy(&qi->qi_quotaofflock); | |
f0e2d93c | 1167 | kmem_free(qi); |
1da177e4 LT |
1168 | mp->m_quotainfo = NULL; |
1169 | } | |
1170 | ||
1171 | ||
1172 | ||
1173 | /* ------------------- PRIVATE STATIC FUNCTIONS ----------------------- */ | |
1174 | ||
1175 | /* ARGSUSED */ | |
1176 | STATIC void | |
1177 | xfs_qm_list_init( | |
1178 | xfs_dqlist_t *list, | |
1179 | char *str, | |
1180 | int n) | |
1181 | { | |
794ee1ba | 1182 | mutex_init(&list->qh_lock); |
e6a81f13 | 1183 | INIT_LIST_HEAD(&list->qh_list); |
1da177e4 LT |
1184 | list->qh_version = 0; |
1185 | list->qh_nelems = 0; | |
1186 | } | |
1187 | ||
1188 | STATIC void | |
1189 | xfs_qm_list_destroy( | |
1190 | xfs_dqlist_t *list) | |
1191 | { | |
1192 | mutex_destroy(&(list->qh_lock)); | |
1193 | } | |
1194 | ||
1da177e4 LT |
1195 | /* |
1196 | * Create an inode and return with a reference already taken, but unlocked | |
1197 | * This is how we create quota inodes | |
1198 | */ | |
1199 | STATIC int | |
1200 | xfs_qm_qino_alloc( | |
1201 | xfs_mount_t *mp, | |
1202 | xfs_inode_t **ip, | |
1203 | __int64_t sbfields, | |
1204 | uint flags) | |
1205 | { | |
1206 | xfs_trans_t *tp; | |
1207 | int error; | |
1da177e4 LT |
1208 | int committed; |
1209 | ||
061f7209 | 1210 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); |
1da177e4 LT |
1211 | if ((error = xfs_trans_reserve(tp, |
1212 | XFS_QM_QINOCREATE_SPACE_RES(mp), | |
1213 | XFS_CREATE_LOG_RES(mp), 0, | |
1214 | XFS_TRANS_PERM_LOG_RES, | |
1215 | XFS_CREATE_LOG_COUNT))) { | |
1216 | xfs_trans_cancel(tp, 0); | |
014c2544 | 1217 | return error; |
1da177e4 | 1218 | } |
1da177e4 | 1219 | |
6c77b0ea CH |
1220 | error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip, &committed); |
1221 | if (error) { | |
1da177e4 LT |
1222 | xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | |
1223 | XFS_TRANS_ABORT); | |
014c2544 | 1224 | return error; |
1da177e4 LT |
1225 | } |
1226 | ||
1da177e4 LT |
1227 | /* |
1228 | * Make the changes in the superblock, and log those too. | |
1229 | * sbfields arg may contain fields other than *QUOTINO; | |
1230 | * VERSIONNUM for example. | |
1231 | */ | |
3685c2a1 | 1232 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 1233 | if (flags & XFS_QMOPT_SBVERSION) { |
62118709 | 1234 | ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); |
1da177e4 LT |
1235 | ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
1236 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)) == | |
1237 | (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1238 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)); | |
1239 | ||
62118709 | 1240 | xfs_sb_version_addquota(&mp->m_sb); |
1da177e4 LT |
1241 | mp->m_sb.sb_uquotino = NULLFSINO; |
1242 | mp->m_sb.sb_gquotino = NULLFSINO; | |
1243 | ||
1244 | /* qflags will get updated _after_ quotacheck */ | |
1245 | mp->m_sb.sb_qflags = 0; | |
1da177e4 LT |
1246 | } |
1247 | if (flags & XFS_QMOPT_UQUOTA) | |
1248 | mp->m_sb.sb_uquotino = (*ip)->i_ino; | |
1249 | else | |
1250 | mp->m_sb.sb_gquotino = (*ip)->i_ino; | |
3685c2a1 | 1251 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
1252 | xfs_mod_sb(tp, sbfields); |
1253 | ||
1c72bf90 | 1254 | if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { |
53487786 | 1255 | xfs_alert(mp, "%s failed (error %d)!", __func__, error); |
014c2544 | 1256 | return error; |
1da177e4 | 1257 | } |
014c2544 | 1258 | return 0; |
1da177e4 LT |
1259 | } |
1260 | ||
1261 | ||
5b139738 | 1262 | STATIC void |
1da177e4 LT |
1263 | xfs_qm_reset_dqcounts( |
1264 | xfs_mount_t *mp, | |
1265 | xfs_buf_t *bp, | |
1266 | xfs_dqid_t id, | |
1267 | uint type) | |
1268 | { | |
1269 | xfs_disk_dquot_t *ddq; | |
1270 | int j; | |
1271 | ||
0b1b213f CH |
1272 | trace_xfs_reset_dqcounts(bp, _RET_IP_); |
1273 | ||
1da177e4 LT |
1274 | /* |
1275 | * Reset all counters and timers. They'll be | |
1276 | * started afresh by xfs_qm_quotacheck. | |
1277 | */ | |
1278 | #ifdef DEBUG | |
1279 | j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
1280 | do_div(j, sizeof(xfs_dqblk_t)); | |
8a7b8a89 | 1281 | ASSERT(mp->m_quotainfo->qi_dqperchunk == j); |
1da177e4 LT |
1282 | #endif |
1283 | ddq = (xfs_disk_dquot_t *)XFS_BUF_PTR(bp); | |
8a7b8a89 | 1284 | for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { |
1da177e4 LT |
1285 | /* |
1286 | * Do a sanity check, and if needed, repair the dqblk. Don't | |
1287 | * output any warnings because it's perfectly possible to | |
c41564b5 | 1288 | * find uninitialised dquot blks. See comment in xfs_qm_dqcheck. |
1da177e4 | 1289 | */ |
a0fa2b67 | 1290 | (void) xfs_qm_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR, |
1da177e4 | 1291 | "xfs_quotacheck"); |
1149d96a CH |
1292 | ddq->d_bcount = 0; |
1293 | ddq->d_icount = 0; | |
1294 | ddq->d_rtbcount = 0; | |
1295 | ddq->d_btimer = 0; | |
1296 | ddq->d_itimer = 0; | |
1297 | ddq->d_rtbtimer = 0; | |
1298 | ddq->d_bwarns = 0; | |
1299 | ddq->d_iwarns = 0; | |
1300 | ddq->d_rtbwarns = 0; | |
1da177e4 LT |
1301 | ddq = (xfs_disk_dquot_t *) ((xfs_dqblk_t *)ddq + 1); |
1302 | } | |
1da177e4 LT |
1303 | } |
1304 | ||
1305 | STATIC int | |
1306 | xfs_qm_dqiter_bufs( | |
1307 | xfs_mount_t *mp, | |
1308 | xfs_dqid_t firstid, | |
1309 | xfs_fsblock_t bno, | |
1310 | xfs_filblks_t blkcnt, | |
1311 | uint flags) | |
1312 | { | |
1313 | xfs_buf_t *bp; | |
1314 | int error; | |
c8ad20ff | 1315 | int type; |
1da177e4 LT |
1316 | |
1317 | ASSERT(blkcnt > 0); | |
c8ad20ff NS |
1318 | type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : |
1319 | (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); | |
1da177e4 LT |
1320 | error = 0; |
1321 | ||
1322 | /* | |
1323 | * Blkcnt arg can be a very big number, and might even be | |
1324 | * larger than the log itself. So, we have to break it up into | |
1325 | * manageable-sized transactions. | |
1326 | * Note that we don't start a permanent transaction here; we might | |
1327 | * not be able to get a log reservation for the whole thing up front, | |
1328 | * and we don't really care to either, because we just discard | |
1329 | * everything if we were to crash in the middle of this loop. | |
1330 | */ | |
1331 | while (blkcnt--) { | |
1332 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1333 | XFS_FSB_TO_DADDR(mp, bno), | |
8a7b8a89 | 1334 | mp->m_quotainfo->qi_dqchunklen, 0, &bp); |
1da177e4 LT |
1335 | if (error) |
1336 | break; | |
1337 | ||
5b139738 | 1338 | xfs_qm_reset_dqcounts(mp, bp, firstid, type); |
1da177e4 LT |
1339 | xfs_bdwrite(mp, bp); |
1340 | /* | |
1341 | * goto the next block. | |
1342 | */ | |
1343 | bno++; | |
8a7b8a89 | 1344 | firstid += mp->m_quotainfo->qi_dqperchunk; |
1da177e4 | 1345 | } |
014c2544 | 1346 | return error; |
1da177e4 LT |
1347 | } |
1348 | ||
1349 | /* | |
c8ad20ff | 1350 | * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a |
1da177e4 LT |
1351 | * caller supplied function for every chunk of dquots that we find. |
1352 | */ | |
1353 | STATIC int | |
1354 | xfs_qm_dqiterate( | |
1355 | xfs_mount_t *mp, | |
1356 | xfs_inode_t *qip, | |
1357 | uint flags) | |
1358 | { | |
1359 | xfs_bmbt_irec_t *map; | |
1360 | int i, nmaps; /* number of map entries */ | |
1361 | int error; /* return value */ | |
1362 | xfs_fileoff_t lblkno; | |
1363 | xfs_filblks_t maxlblkcnt; | |
1364 | xfs_dqid_t firstid; | |
1365 | xfs_fsblock_t rablkno; | |
1366 | xfs_filblks_t rablkcnt; | |
1367 | ||
1368 | error = 0; | |
1369 | /* | |
c41564b5 | 1370 | * This looks racy, but we can't keep an inode lock across a |
1da177e4 LT |
1371 | * trans_reserve. But, this gets called during quotacheck, and that |
1372 | * happens only at mount time which is single threaded. | |
1373 | */ | |
1374 | if (qip->i_d.di_nblocks == 0) | |
014c2544 | 1375 | return 0; |
1da177e4 LT |
1376 | |
1377 | map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); | |
1378 | ||
1379 | lblkno = 0; | |
1380 | maxlblkcnt = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp)); | |
1381 | do { | |
1382 | nmaps = XFS_DQITER_MAP_SIZE; | |
1383 | /* | |
1384 | * We aren't changing the inode itself. Just changing | |
1385 | * some of its data. No new blocks are added here, and | |
1386 | * the inode is never added to the transaction. | |
1387 | */ | |
1388 | xfs_ilock(qip, XFS_ILOCK_SHARED); | |
1389 | error = xfs_bmapi(NULL, qip, lblkno, | |
1390 | maxlblkcnt - lblkno, | |
1391 | XFS_BMAPI_METADATA, | |
1392 | NULL, | |
b4e9181e | 1393 | 0, map, &nmaps, NULL); |
1da177e4 LT |
1394 | xfs_iunlock(qip, XFS_ILOCK_SHARED); |
1395 | if (error) | |
1396 | break; | |
1397 | ||
1398 | ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); | |
1399 | for (i = 0; i < nmaps; i++) { | |
1400 | ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); | |
1401 | ASSERT(map[i].br_blockcount); | |
1402 | ||
1403 | ||
1404 | lblkno += map[i].br_blockcount; | |
1405 | ||
1406 | if (map[i].br_startblock == HOLESTARTBLOCK) | |
1407 | continue; | |
1408 | ||
1409 | firstid = (xfs_dqid_t) map[i].br_startoff * | |
8a7b8a89 | 1410 | mp->m_quotainfo->qi_dqperchunk; |
1da177e4 LT |
1411 | /* |
1412 | * Do a read-ahead on the next extent. | |
1413 | */ | |
1414 | if ((i+1 < nmaps) && | |
1415 | (map[i+1].br_startblock != HOLESTARTBLOCK)) { | |
1416 | rablkcnt = map[i+1].br_blockcount; | |
1417 | rablkno = map[i+1].br_startblock; | |
1418 | while (rablkcnt--) { | |
1a1a3e97 | 1419 | xfs_buf_readahead(mp->m_ddev_targp, |
1da177e4 | 1420 | XFS_FSB_TO_DADDR(mp, rablkno), |
8a7b8a89 | 1421 | mp->m_quotainfo->qi_dqchunklen); |
1da177e4 LT |
1422 | rablkno++; |
1423 | } | |
1424 | } | |
1425 | /* | |
1426 | * Iterate thru all the blks in the extent and | |
1427 | * reset the counters of all the dquots inside them. | |
1428 | */ | |
1429 | if ((error = xfs_qm_dqiter_bufs(mp, | |
1430 | firstid, | |
1431 | map[i].br_startblock, | |
1432 | map[i].br_blockcount, | |
1433 | flags))) { | |
1434 | break; | |
1435 | } | |
1436 | } | |
1437 | ||
1438 | if (error) | |
1439 | break; | |
1440 | } while (nmaps > 0); | |
1441 | ||
f0e2d93c | 1442 | kmem_free(map); |
1da177e4 | 1443 | |
014c2544 | 1444 | return error; |
1da177e4 LT |
1445 | } |
1446 | ||
1447 | /* | |
1448 | * Called by dqusage_adjust in doing a quotacheck. | |
52fda114 CH |
1449 | * |
1450 | * Given the inode, and a dquot id this updates both the incore dqout as well | |
1451 | * as the buffer copy. This is so that once the quotacheck is done, we can | |
1452 | * just log all the buffers, as opposed to logging numerous updates to | |
1453 | * individual dquots. | |
1da177e4 | 1454 | */ |
52fda114 | 1455 | STATIC int |
1da177e4 | 1456 | xfs_qm_quotacheck_dqadjust( |
52fda114 CH |
1457 | struct xfs_inode *ip, |
1458 | xfs_dqid_t id, | |
1459 | uint type, | |
1da177e4 LT |
1460 | xfs_qcnt_t nblks, |
1461 | xfs_qcnt_t rtblks) | |
1462 | { | |
52fda114 CH |
1463 | struct xfs_mount *mp = ip->i_mount; |
1464 | struct xfs_dquot *dqp; | |
1465 | int error; | |
1466 | ||
1467 | error = xfs_qm_dqget(mp, ip, id, type, | |
1468 | XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp); | |
1469 | if (error) { | |
1470 | /* | |
1471 | * Shouldn't be able to turn off quotas here. | |
1472 | */ | |
1473 | ASSERT(error != ESRCH); | |
1474 | ASSERT(error != ENOENT); | |
1475 | return error; | |
1476 | } | |
0b1b213f CH |
1477 | |
1478 | trace_xfs_dqadjust(dqp); | |
1479 | ||
1da177e4 LT |
1480 | /* |
1481 | * Adjust the inode count and the block count to reflect this inode's | |
1482 | * resource usage. | |
1483 | */ | |
413d57c9 | 1484 | be64_add_cpu(&dqp->q_core.d_icount, 1); |
1da177e4 LT |
1485 | dqp->q_res_icount++; |
1486 | if (nblks) { | |
413d57c9 | 1487 | be64_add_cpu(&dqp->q_core.d_bcount, nblks); |
1da177e4 LT |
1488 | dqp->q_res_bcount += nblks; |
1489 | } | |
1490 | if (rtblks) { | |
413d57c9 | 1491 | be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); |
1da177e4 LT |
1492 | dqp->q_res_rtbcount += rtblks; |
1493 | } | |
1494 | ||
1495 | /* | |
1496 | * Set default limits, adjust timers (since we changed usages) | |
191f8488 CH |
1497 | * |
1498 | * There are no timers for the default values set in the root dquot. | |
1da177e4 | 1499 | */ |
191f8488 | 1500 | if (dqp->q_core.d_id) { |
52fda114 CH |
1501 | xfs_qm_adjust_dqlimits(mp, &dqp->q_core); |
1502 | xfs_qm_adjust_dqtimers(mp, &dqp->q_core); | |
1da177e4 LT |
1503 | } |
1504 | ||
1505 | dqp->dq_flags |= XFS_DQ_DIRTY; | |
52fda114 CH |
1506 | xfs_qm_dqput(dqp); |
1507 | return 0; | |
1da177e4 LT |
1508 | } |
1509 | ||
1510 | STATIC int | |
1511 | xfs_qm_get_rtblks( | |
1512 | xfs_inode_t *ip, | |
1513 | xfs_qcnt_t *O_rtblks) | |
1514 | { | |
1515 | xfs_filblks_t rtblks; /* total rt blks */ | |
4eea22f0 | 1516 | xfs_extnum_t idx; /* extent record index */ |
1da177e4 LT |
1517 | xfs_ifork_t *ifp; /* inode fork pointer */ |
1518 | xfs_extnum_t nextents; /* number of extent entries */ | |
1da177e4 LT |
1519 | int error; |
1520 | ||
1521 | ASSERT(XFS_IS_REALTIME_INODE(ip)); | |
1522 | ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); | |
1523 | if (!(ifp->if_flags & XFS_IFEXTENTS)) { | |
1524 | if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) | |
014c2544 | 1525 | return error; |
1da177e4 LT |
1526 | } |
1527 | rtblks = 0; | |
4eea22f0 | 1528 | nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); |
a6f64d4a CH |
1529 | for (idx = 0; idx < nextents; idx++) |
1530 | rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); | |
1da177e4 | 1531 | *O_rtblks = (xfs_qcnt_t)rtblks; |
014c2544 | 1532 | return 0; |
1da177e4 LT |
1533 | } |
1534 | ||
1535 | /* | |
1536 | * callback routine supplied to bulkstat(). Given an inumber, find its | |
1537 | * dquots and update them to account for resources taken by that inode. | |
1538 | */ | |
1539 | /* ARGSUSED */ | |
1540 | STATIC int | |
1541 | xfs_qm_dqusage_adjust( | |
1542 | xfs_mount_t *mp, /* mount point for filesystem */ | |
1543 | xfs_ino_t ino, /* inode number to get data for */ | |
1544 | void __user *buffer, /* not used */ | |
1545 | int ubsize, /* not used */ | |
1da177e4 | 1546 | int *ubused, /* not used */ |
1da177e4 LT |
1547 | int *res) /* result code value */ |
1548 | { | |
1549 | xfs_inode_t *ip; | |
52fda114 | 1550 | xfs_qcnt_t nblks, rtblks = 0; |
1da177e4 LT |
1551 | int error; |
1552 | ||
1553 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
1554 | ||
1555 | /* | |
1556 | * rootino must have its resources accounted for, not so with the quota | |
1557 | * inodes. | |
1558 | */ | |
1559 | if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) { | |
1560 | *res = BULKSTAT_RV_NOTHING; | |
1561 | return XFS_ERROR(EINVAL); | |
1562 | } | |
1563 | ||
1564 | /* | |
1565 | * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget | |
1566 | * interface expects the inode to be exclusively locked because that's | |
1567 | * the case in all other instances. It's OK that we do this because | |
1568 | * quotacheck is done only at mount time. | |
1569 | */ | |
52fda114 CH |
1570 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip); |
1571 | if (error) { | |
1da177e4 | 1572 | *res = BULKSTAT_RV_NOTHING; |
014c2544 | 1573 | return error; |
1da177e4 LT |
1574 | } |
1575 | ||
52fda114 | 1576 | ASSERT(ip->i_delayed_blks == 0); |
1da177e4 | 1577 | |
52fda114 | 1578 | if (XFS_IS_REALTIME_INODE(ip)) { |
1da177e4 LT |
1579 | /* |
1580 | * Walk thru the extent list and count the realtime blocks. | |
1581 | */ | |
52fda114 CH |
1582 | error = xfs_qm_get_rtblks(ip, &rtblks); |
1583 | if (error) | |
1584 | goto error0; | |
1da177e4 | 1585 | } |
1da177e4 | 1586 | |
52fda114 | 1587 | nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; |
1da177e4 LT |
1588 | |
1589 | /* | |
1590 | * Add the (disk blocks and inode) resources occupied by this | |
1591 | * inode to its dquots. We do this adjustment in the incore dquot, | |
1592 | * and also copy the changes to its buffer. | |
1593 | * We don't care about putting these changes in a transaction | |
1594 | * envelope because if we crash in the middle of a 'quotacheck' | |
1595 | * we have to start from the beginning anyway. | |
1596 | * Once we're done, we'll log all the dquot bufs. | |
1597 | * | |
c41564b5 | 1598 | * The *QUOTA_ON checks below may look pretty racy, but quotachecks |
1da177e4 LT |
1599 | * and quotaoffs don't race. (Quotachecks happen at mount time only). |
1600 | */ | |
1601 | if (XFS_IS_UQUOTA_ON(mp)) { | |
52fda114 CH |
1602 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid, |
1603 | XFS_DQ_USER, nblks, rtblks); | |
1604 | if (error) | |
1605 | goto error0; | |
1da177e4 | 1606 | } |
52fda114 CH |
1607 | |
1608 | if (XFS_IS_GQUOTA_ON(mp)) { | |
1609 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid, | |
1610 | XFS_DQ_GROUP, nblks, rtblks); | |
1611 | if (error) | |
1612 | goto error0; | |
1da177e4 | 1613 | } |
1da177e4 | 1614 | |
52fda114 | 1615 | if (XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 1616 | error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip), |
52fda114 CH |
1617 | XFS_DQ_PROJ, nblks, rtblks); |
1618 | if (error) | |
1619 | goto error0; | |
1620 | } | |
1621 | ||
1622 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1623 | IRELE(ip); | |
1da177e4 | 1624 | *res = BULKSTAT_RV_DIDONE; |
014c2544 | 1625 | return 0; |
52fda114 CH |
1626 | |
1627 | error0: | |
1628 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1629 | IRELE(ip); | |
1630 | *res = BULKSTAT_RV_GIVEUP; | |
1631 | return error; | |
1da177e4 LT |
1632 | } |
1633 | ||
1634 | /* | |
1635 | * Walk thru all the filesystem inodes and construct a consistent view | |
1636 | * of the disk quota world. If the quotacheck fails, disable quotas. | |
1637 | */ | |
1638 | int | |
1639 | xfs_qm_quotacheck( | |
1640 | xfs_mount_t *mp) | |
1641 | { | |
1642 | int done, count, error; | |
1643 | xfs_ino_t lastino; | |
1644 | size_t structsz; | |
1645 | xfs_inode_t *uip, *gip; | |
1646 | uint flags; | |
1647 | ||
1648 | count = INT_MAX; | |
1649 | structsz = 1; | |
1650 | lastino = 0; | |
1651 | flags = 0; | |
1652 | ||
8a7b8a89 | 1653 | ASSERT(mp->m_quotainfo->qi_uquotaip || mp->m_quotainfo->qi_gquotaip); |
1da177e4 LT |
1654 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1655 | ||
1656 | /* | |
1657 | * There should be no cached dquots. The (simplistic) quotacheck | |
1658 | * algorithm doesn't like that. | |
1659 | */ | |
3a25404b | 1660 | ASSERT(list_empty(&mp->m_quotainfo->qi_dqlist)); |
1da177e4 | 1661 | |
0b932ccc | 1662 | xfs_notice(mp, "Quotacheck needed: Please wait."); |
1da177e4 LT |
1663 | |
1664 | /* | |
c8ad20ff | 1665 | * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset |
1da177e4 LT |
1666 | * their counters to zero. We need a clean slate. |
1667 | * We don't log our changes till later. | |
1668 | */ | |
8a7b8a89 CH |
1669 | uip = mp->m_quotainfo->qi_uquotaip; |
1670 | if (uip) { | |
1671 | error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA); | |
1672 | if (error) | |
1da177e4 LT |
1673 | goto error_return; |
1674 | flags |= XFS_UQUOTA_CHKD; | |
1675 | } | |
1676 | ||
8a7b8a89 CH |
1677 | gip = mp->m_quotainfo->qi_gquotaip; |
1678 | if (gip) { | |
1679 | error = xfs_qm_dqiterate(mp, gip, XFS_IS_GQUOTA_ON(mp) ? | |
1680 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1681 | if (error) | |
1da177e4 | 1682 | goto error_return; |
c8ad20ff | 1683 | flags |= XFS_OQUOTA_CHKD; |
1da177e4 LT |
1684 | } |
1685 | ||
1686 | do { | |
1687 | /* | |
1688 | * Iterate thru all the inodes in the file system, | |
1689 | * adjusting the corresponding dquot counters in core. | |
1690 | */ | |
7dce11db CH |
1691 | error = xfs_bulkstat(mp, &lastino, &count, |
1692 | xfs_qm_dqusage_adjust, | |
1693 | structsz, NULL, &done); | |
1694 | if (error) | |
1da177e4 LT |
1695 | break; |
1696 | ||
7dce11db | 1697 | } while (!done); |
1da177e4 | 1698 | |
4b8879df DC |
1699 | /* |
1700 | * We've made all the changes that we need to make incore. | |
1701 | * Flush them down to disk buffers if everything was updated | |
1702 | * successfully. | |
1703 | */ | |
1704 | if (!error) | |
20026d92 | 1705 | error = xfs_qm_dqflush_all(mp, 0); |
4b8879df | 1706 | |
1da177e4 LT |
1707 | /* |
1708 | * We can get this error if we couldn't do a dquot allocation inside | |
1709 | * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the | |
1710 | * dirty dquots that might be cached, we just want to get rid of them | |
1711 | * and turn quotaoff. The dquots won't be attached to any of the inodes | |
1712 | * at this point (because we intentionally didn't in dqget_noattach). | |
1713 | */ | |
1714 | if (error) { | |
8112e9dc | 1715 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 LT |
1716 | goto error_return; |
1717 | } | |
1da177e4 LT |
1718 | |
1719 | /* | |
1720 | * We didn't log anything, because if we crashed, we'll have to | |
1721 | * start the quotacheck from scratch anyway. However, we must make | |
1722 | * sure that our dquot changes are secure before we put the | |
1723 | * quotacheck'd stamp on the superblock. So, here we do a synchronous | |
1724 | * flush. | |
1725 | */ | |
1726 | XFS_bflush(mp->m_ddev_targp); | |
1727 | ||
1728 | /* | |
1729 | * If one type of quotas is off, then it will lose its | |
1730 | * quotachecked status, since we won't be doing accounting for | |
1731 | * that type anymore. | |
1732 | */ | |
c8ad20ff | 1733 | mp->m_qflags &= ~(XFS_OQUOTA_CHKD | XFS_UQUOTA_CHKD); |
1da177e4 LT |
1734 | mp->m_qflags |= flags; |
1735 | ||
3a25404b | 1736 | xfs_qm_dquot_list_print(mp); |
1da177e4 LT |
1737 | |
1738 | error_return: | |
1739 | if (error) { | |
0b932ccc DC |
1740 | xfs_warn(mp, |
1741 | "Quotacheck: Unsuccessful (Error %d): Disabling quotas.", | |
1742 | error); | |
1da177e4 LT |
1743 | /* |
1744 | * We must turn off quotas. | |
1745 | */ | |
1746 | ASSERT(mp->m_quotainfo != NULL); | |
1747 | ASSERT(xfs_Gqm != NULL); | |
1748 | xfs_qm_destroy_quotainfo(mp); | |
31d5577b | 1749 | if (xfs_mount_reset_sbqflags(mp)) { |
0b932ccc DC |
1750 | xfs_warn(mp, |
1751 | "Quotacheck: Failed to reset quota flags."); | |
31d5577b | 1752 | } |
0b932ccc DC |
1753 | } else |
1754 | xfs_notice(mp, "Quotacheck: Done."); | |
1da177e4 LT |
1755 | return (error); |
1756 | } | |
1757 | ||
1758 | /* | |
1759 | * This is called after the superblock has been read in and we're ready to | |
1760 | * iget the quota inodes. | |
1761 | */ | |
1762 | STATIC int | |
1763 | xfs_qm_init_quotainos( | |
1764 | xfs_mount_t *mp) | |
1765 | { | |
1766 | xfs_inode_t *uip, *gip; | |
1767 | int error; | |
1768 | __int64_t sbflags; | |
1769 | uint flags; | |
1770 | ||
1771 | ASSERT(mp->m_quotainfo); | |
1772 | uip = gip = NULL; | |
1773 | sbflags = 0; | |
1774 | flags = 0; | |
1775 | ||
1776 | /* | |
1777 | * Get the uquota and gquota inodes | |
1778 | */ | |
62118709 | 1779 | if (xfs_sb_version_hasquota(&mp->m_sb)) { |
1da177e4 LT |
1780 | if (XFS_IS_UQUOTA_ON(mp) && |
1781 | mp->m_sb.sb_uquotino != NULLFSINO) { | |
1782 | ASSERT(mp->m_sb.sb_uquotino > 0); | |
1783 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, | |
7b6259e7 | 1784 | 0, 0, &uip))) |
1da177e4 LT |
1785 | return XFS_ERROR(error); |
1786 | } | |
c8ad20ff | 1787 | if (XFS_IS_OQUOTA_ON(mp) && |
1da177e4 LT |
1788 | mp->m_sb.sb_gquotino != NULLFSINO) { |
1789 | ASSERT(mp->m_sb.sb_gquotino > 0); | |
1790 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, | |
7b6259e7 | 1791 | 0, 0, &gip))) { |
1da177e4 | 1792 | if (uip) |
43355099 | 1793 | IRELE(uip); |
1da177e4 LT |
1794 | return XFS_ERROR(error); |
1795 | } | |
1796 | } | |
1797 | } else { | |
1798 | flags |= XFS_QMOPT_SBVERSION; | |
1799 | sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1800 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS); | |
1801 | } | |
1802 | ||
1803 | /* | |
1804 | * Create the two inodes, if they don't exist already. The changes | |
1805 | * made above will get added to a transaction and logged in one of | |
1806 | * the qino_alloc calls below. If the device is readonly, | |
1807 | * temporarily switch to read-write to do this. | |
1808 | */ | |
1809 | if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { | |
1810 | if ((error = xfs_qm_qino_alloc(mp, &uip, | |
1811 | sbflags | XFS_SB_UQUOTINO, | |
1812 | flags | XFS_QMOPT_UQUOTA))) | |
1813 | return XFS_ERROR(error); | |
1814 | ||
1815 | flags &= ~XFS_QMOPT_SBVERSION; | |
1816 | } | |
c8ad20ff NS |
1817 | if (XFS_IS_OQUOTA_ON(mp) && gip == NULL) { |
1818 | flags |= (XFS_IS_GQUOTA_ON(mp) ? | |
1819 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1820 | error = xfs_qm_qino_alloc(mp, &gip, | |
1821 | sbflags | XFS_SB_GQUOTINO, flags); | |
1822 | if (error) { | |
1da177e4 | 1823 | if (uip) |
43355099 | 1824 | IRELE(uip); |
1da177e4 LT |
1825 | |
1826 | return XFS_ERROR(error); | |
1827 | } | |
1828 | } | |
1829 | ||
8a7b8a89 CH |
1830 | mp->m_quotainfo->qi_uquotaip = uip; |
1831 | mp->m_quotainfo->qi_gquotaip = gip; | |
1da177e4 | 1832 | |
014c2544 | 1833 | return 0; |
1da177e4 LT |
1834 | } |
1835 | ||
1836 | ||
368e1361 | 1837 | |
1da177e4 | 1838 | /* |
368e1361 DC |
1839 | * Just pop the least recently used dquot off the freelist and |
1840 | * recycle it. The returned dquot is locked. | |
1da177e4 | 1841 | */ |
368e1361 DC |
1842 | STATIC xfs_dquot_t * |
1843 | xfs_qm_dqreclaim_one(void) | |
1da177e4 | 1844 | { |
368e1361 DC |
1845 | xfs_dquot_t *dqpout; |
1846 | xfs_dquot_t *dqp; | |
1da177e4 | 1847 | int restarts; |
0fbca4d1 | 1848 | int startagain; |
1da177e4 | 1849 | |
1da177e4 | 1850 | restarts = 0; |
368e1361 | 1851 | dqpout = NULL; |
1da177e4 | 1852 | |
368e1361 | 1853 | /* lockorder: hashchainlock, freelistlock, mplistlock, dqlock, dqflock */ |
0fbca4d1 DC |
1854 | again: |
1855 | startagain = 0; | |
3a8406f6 | 1856 | mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 | 1857 | |
3a8406f6 | 1858 | list_for_each_entry(dqp, &xfs_Gqm->qm_dqfrlist, q_freelist) { |
3a25404b | 1859 | struct xfs_mount *mp = dqp->q_mount; |
1da177e4 LT |
1860 | xfs_dqlock(dqp); |
1861 | ||
1862 | /* | |
1863 | * We are racing with dqlookup here. Naturally we don't | |
368e1361 DC |
1864 | * want to reclaim a dquot that lookup wants. We release the |
1865 | * freelist lock and start over, so that lookup will grab | |
1866 | * both the dquot and the freelistlock. | |
1da177e4 LT |
1867 | */ |
1868 | if (dqp->dq_flags & XFS_DQ_WANT) { | |
368e1361 DC |
1869 | ASSERT(! (dqp->dq_flags & XFS_DQ_INACTIVE)); |
1870 | ||
1871 | trace_xfs_dqreclaim_want(dqp); | |
1da177e4 | 1872 | XQM_STATS_INC(xqmstats.xs_qm_dqwants); |
0fbca4d1 DC |
1873 | restarts++; |
1874 | startagain = 1; | |
1875 | goto dqunlock; | |
1da177e4 LT |
1876 | } |
1877 | ||
1878 | /* | |
1879 | * If the dquot is inactive, we are assured that it is | |
1880 | * not on the mplist or the hashlist, and that makes our | |
1881 | * life easier. | |
1882 | */ | |
1883 | if (dqp->dq_flags & XFS_DQ_INACTIVE) { | |
3a25404b | 1884 | ASSERT(mp == NULL); |
1da177e4 | 1885 | ASSERT(! XFS_DQ_IS_DIRTY(dqp)); |
e6a81f13 | 1886 | ASSERT(list_empty(&dqp->q_hashlist)); |
3a25404b | 1887 | ASSERT(list_empty(&dqp->q_mplist)); |
3a8406f6 DC |
1888 | list_del_init(&dqp->q_freelist); |
1889 | xfs_Gqm->qm_dqfrlist_cnt--; | |
368e1361 | 1890 | dqpout = dqp; |
1da177e4 | 1891 | XQM_STATS_INC(xqmstats.xs_qm_dqinact_reclaims); |
0fbca4d1 | 1892 | goto dqunlock; |
1da177e4 LT |
1893 | } |
1894 | ||
368e1361 | 1895 | ASSERT(dqp->q_hash); |
3a25404b | 1896 | ASSERT(!list_empty(&dqp->q_mplist)); |
368e1361 | 1897 | |
1da177e4 | 1898 | /* |
0fbca4d1 DC |
1899 | * Try to grab the flush lock. If this dquot is in the process |
1900 | * of getting flushed to disk, we don't want to reclaim it. | |
1da177e4 | 1901 | */ |
0fbca4d1 DC |
1902 | if (!xfs_dqflock_nowait(dqp)) |
1903 | goto dqunlock; | |
1da177e4 LT |
1904 | |
1905 | /* | |
1906 | * We have the flush lock so we know that this is not in the | |
1907 | * process of being flushed. So, if this is dirty, flush it | |
1908 | * DELWRI so that we don't get a freelist infested with | |
1909 | * dirty dquots. | |
1910 | */ | |
1911 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
3c56836f | 1912 | int error; |
0b1b213f | 1913 | |
368e1361 | 1914 | trace_xfs_dqreclaim_dirty(dqp); |
0b1b213f | 1915 | |
1da177e4 LT |
1916 | /* |
1917 | * We flush it delayed write, so don't bother | |
368e1361 | 1918 | * releasing the freelist lock. |
1da177e4 | 1919 | */ |
20026d92 | 1920 | error = xfs_qm_dqflush(dqp, 0); |
3c56836f | 1921 | if (error) { |
53487786 DC |
1922 | xfs_warn(mp, "%s: dquot %p flush failed", |
1923 | __func__, dqp); | |
3c56836f | 1924 | } |
0fbca4d1 | 1925 | goto dqunlock; |
1da177e4 | 1926 | } |
368e1361 | 1927 | |
1da177e4 LT |
1928 | /* |
1929 | * We're trying to get the hashlock out of order. This races | |
1930 | * with dqlookup; so, we giveup and goto the next dquot if | |
1931 | * we couldn't get the hashlock. This way, we won't starve | |
1932 | * a dqlookup process that holds the hashlock that is | |
1933 | * waiting for the freelist lock. | |
1934 | */ | |
c9a192dc | 1935 | if (!mutex_trylock(&dqp->q_hash->qh_lock)) { |
368e1361 DC |
1936 | restarts++; |
1937 | goto dqfunlock; | |
1da177e4 | 1938 | } |
368e1361 | 1939 | |
1da177e4 LT |
1940 | /* |
1941 | * This races with dquot allocation code as well as dqflush_all | |
1942 | * and reclaim code. So, if we failed to grab the mplist lock, | |
1943 | * giveup everything and start over. | |
1944 | */ | |
3a25404b | 1945 | if (!mutex_trylock(&mp->m_quotainfo->qi_dqlist_lock)) { |
368e1361 | 1946 | restarts++; |
0fbca4d1 DC |
1947 | startagain = 1; |
1948 | goto qhunlock; | |
1da177e4 | 1949 | } |
0b1b213f | 1950 | |
1da177e4 | 1951 | ASSERT(dqp->q_nrefs == 0); |
3a25404b DC |
1952 | list_del_init(&dqp->q_mplist); |
1953 | mp->m_quotainfo->qi_dquots--; | |
1954 | mp->m_quotainfo->qi_dqreclaims++; | |
e6a81f13 DC |
1955 | list_del_init(&dqp->q_hashlist); |
1956 | dqp->q_hash->qh_version++; | |
3a8406f6 DC |
1957 | list_del_init(&dqp->q_freelist); |
1958 | xfs_Gqm->qm_dqfrlist_cnt--; | |
368e1361 DC |
1959 | dqpout = dqp; |
1960 | mutex_unlock(&mp->m_quotainfo->qi_dqlist_lock); | |
0fbca4d1 | 1961 | qhunlock: |
368e1361 DC |
1962 | mutex_unlock(&dqp->q_hash->qh_lock); |
1963 | dqfunlock: | |
1964 | xfs_dqfunlock(dqp); | |
0fbca4d1 | 1965 | dqunlock: |
1da177e4 | 1966 | xfs_dqunlock(dqp); |
368e1361 DC |
1967 | if (dqpout) |
1968 | break; | |
1969 | if (restarts >= XFS_QM_RECLAIM_MAX_RESTARTS) | |
0fbca4d1 DC |
1970 | break; |
1971 | if (startagain) { | |
1972 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); | |
1973 | goto again; | |
1974 | } | |
1da177e4 | 1975 | } |
3a8406f6 | 1976 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
368e1361 | 1977 | return dqpout; |
1da177e4 LT |
1978 | } |
1979 | ||
368e1361 DC |
1980 | /* |
1981 | * Traverse the freelist of dquots and attempt to reclaim a maximum of | |
1982 | * 'howmany' dquots. This operation races with dqlookup(), and attempts to | |
1983 | * favor the lookup function ... | |
1984 | */ | |
1985 | STATIC int | |
1986 | xfs_qm_shake_freelist( | |
1987 | int howmany) | |
1988 | { | |
1989 | int nreclaimed = 0; | |
1990 | xfs_dquot_t *dqp; | |
1991 | ||
1992 | if (howmany <= 0) | |
1993 | return 0; | |
1994 | ||
1995 | while (nreclaimed < howmany) { | |
1996 | dqp = xfs_qm_dqreclaim_one(); | |
1997 | if (!dqp) | |
1998 | return nreclaimed; | |
1999 | xfs_qm_dqdestroy(dqp); | |
2000 | nreclaimed++; | |
2001 | } | |
2002 | return nreclaimed; | |
2003 | } | |
1da177e4 LT |
2004 | |
2005 | /* | |
2006 | * The kmem_shake interface is invoked when memory is running low. | |
2007 | */ | |
2008 | /* ARGSUSED */ | |
2009 | STATIC int | |
7f8275d0 DC |
2010 | xfs_qm_shake( |
2011 | struct shrinker *shrink, | |
1495f230 | 2012 | struct shrink_control *sc) |
1da177e4 LT |
2013 | { |
2014 | int ndqused, nfree, n; | |
1495f230 | 2015 | gfp_t gfp_mask = sc->gfp_mask; |
1da177e4 LT |
2016 | |
2017 | if (!kmem_shake_allow(gfp_mask)) | |
014c2544 | 2018 | return 0; |
1da177e4 | 2019 | if (!xfs_Gqm) |
014c2544 | 2020 | return 0; |
1da177e4 | 2021 | |
3a8406f6 | 2022 | nfree = xfs_Gqm->qm_dqfrlist_cnt; /* free dquots */ |
1da177e4 LT |
2023 | /* incore dquots in all f/s's */ |
2024 | ndqused = atomic_read(&xfs_Gqm->qm_totaldquots) - nfree; | |
2025 | ||
2026 | ASSERT(ndqused >= 0); | |
2027 | ||
2028 | if (nfree <= ndqused && nfree < ndquot) | |
014c2544 | 2029 | return 0; |
1da177e4 LT |
2030 | |
2031 | ndqused *= xfs_Gqm->qm_dqfree_ratio; /* target # of free dquots */ | |
2032 | n = nfree - ndqused - ndquot; /* # over target */ | |
2033 | ||
2034 | return xfs_qm_shake_freelist(MAX(nfree, n)); | |
2035 | } | |
2036 | ||
2037 | ||
1da177e4 LT |
2038 | /*------------------------------------------------------------------*/ |
2039 | ||
2040 | /* | |
2041 | * Return a new incore dquot. Depending on the number of | |
2042 | * dquots in the system, we either allocate a new one on the kernel heap, | |
2043 | * or reclaim a free one. | |
2044 | * Return value is B_TRUE if we allocated a new dquot, B_FALSE if we managed | |
2045 | * to reclaim an existing one from the freelist. | |
2046 | */ | |
2047 | boolean_t | |
2048 | xfs_qm_dqalloc_incore( | |
2049 | xfs_dquot_t **O_dqpp) | |
2050 | { | |
2051 | xfs_dquot_t *dqp; | |
2052 | ||
2053 | /* | |
2054 | * Check against high water mark to see if we want to pop | |
2055 | * a nincompoop dquot off the freelist. | |
2056 | */ | |
2057 | if (atomic_read(&xfs_Gqm->qm_totaldquots) >= ndquot) { | |
2058 | /* | |
2059 | * Try to recycle a dquot from the freelist. | |
2060 | */ | |
2061 | if ((dqp = xfs_qm_dqreclaim_one())) { | |
2062 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaims); | |
2063 | /* | |
2064 | * Just zero the core here. The rest will get | |
2065 | * reinitialized by caller. XXX we shouldn't even | |
2066 | * do this zero ... | |
2067 | */ | |
2068 | memset(&dqp->q_core, 0, sizeof(dqp->q_core)); | |
2069 | *O_dqpp = dqp; | |
014c2544 | 2070 | return B_FALSE; |
1da177e4 LT |
2071 | } |
2072 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaim_misses); | |
2073 | } | |
2074 | ||
2075 | /* | |
2076 | * Allocate a brand new dquot on the kernel heap and return it | |
2077 | * to the caller to initialize. | |
2078 | */ | |
2079 | ASSERT(xfs_Gqm->qm_dqzone != NULL); | |
2080 | *O_dqpp = kmem_zone_zalloc(xfs_Gqm->qm_dqzone, KM_SLEEP); | |
2081 | atomic_inc(&xfs_Gqm->qm_totaldquots); | |
2082 | ||
014c2544 | 2083 | return B_TRUE; |
1da177e4 LT |
2084 | } |
2085 | ||
2086 | ||
2087 | /* | |
2088 | * Start a transaction and write the incore superblock changes to | |
2089 | * disk. flags parameter indicates which fields have changed. | |
2090 | */ | |
2091 | int | |
2092 | xfs_qm_write_sb_changes( | |
2093 | xfs_mount_t *mp, | |
2094 | __int64_t flags) | |
2095 | { | |
2096 | xfs_trans_t *tp; | |
2097 | int error; | |
2098 | ||
2099 | #ifdef QUOTADEBUG | |
0b932ccc | 2100 | xfs_notice(mp, "Writing superblock quota changes"); |
1da177e4 LT |
2101 | #endif |
2102 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); | |
2103 | if ((error = xfs_trans_reserve(tp, 0, | |
2104 | mp->m_sb.sb_sectsize + 128, 0, | |
2105 | 0, | |
2106 | XFS_DEFAULT_LOG_COUNT))) { | |
2107 | xfs_trans_cancel(tp, 0); | |
014c2544 | 2108 | return error; |
1da177e4 LT |
2109 | } |
2110 | ||
2111 | xfs_mod_sb(tp, flags); | |
e5720eec | 2112 | error = xfs_trans_commit(tp, 0); |
1da177e4 | 2113 | |
e5720eec | 2114 | return error; |
1da177e4 LT |
2115 | } |
2116 | ||
2117 | ||
2118 | /* --------------- utility functions for vnodeops ---------------- */ | |
2119 | ||
2120 | ||
2121 | /* | |
6c77b0ea | 2122 | * Given an inode, a uid, gid and prid make sure that we have |
1da177e4 LT |
2123 | * allocated relevant dquot(s) on disk, and that we won't exceed inode |
2124 | * quotas by creating this file. | |
2125 | * This also attaches dquot(s) to the given inode after locking it, | |
2126 | * and returns the dquots corresponding to the uid and/or gid. | |
2127 | * | |
2128 | * in : inode (unlocked) | |
2129 | * out : udquot, gdquot with references taken and unlocked | |
2130 | */ | |
2131 | int | |
2132 | xfs_qm_vop_dqalloc( | |
7d095257 CH |
2133 | struct xfs_inode *ip, |
2134 | uid_t uid, | |
2135 | gid_t gid, | |
2136 | prid_t prid, | |
2137 | uint flags, | |
2138 | struct xfs_dquot **O_udqpp, | |
2139 | struct xfs_dquot **O_gdqpp) | |
1da177e4 | 2140 | { |
7d095257 CH |
2141 | struct xfs_mount *mp = ip->i_mount; |
2142 | struct xfs_dquot *uq, *gq; | |
2143 | int error; | |
2144 | uint lockflags; | |
1da177e4 | 2145 | |
7d095257 | 2146 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
1da177e4 LT |
2147 | return 0; |
2148 | ||
2149 | lockflags = XFS_ILOCK_EXCL; | |
2150 | xfs_ilock(ip, lockflags); | |
2151 | ||
bd186aa9 | 2152 | if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) |
1da177e4 LT |
2153 | gid = ip->i_d.di_gid; |
2154 | ||
2155 | /* | |
2156 | * Attach the dquot(s) to this inode, doing a dquot allocation | |
2157 | * if necessary. The dquot(s) will not be locked. | |
2158 | */ | |
2159 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
7d095257 CH |
2160 | error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); |
2161 | if (error) { | |
1da177e4 | 2162 | xfs_iunlock(ip, lockflags); |
014c2544 | 2163 | return error; |
1da177e4 LT |
2164 | } |
2165 | } | |
2166 | ||
2167 | uq = gq = NULL; | |
c8ad20ff | 2168 | if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { |
1da177e4 LT |
2169 | if (ip->i_d.di_uid != uid) { |
2170 | /* | |
2171 | * What we need is the dquot that has this uid, and | |
2172 | * if we send the inode to dqget, the uid of the inode | |
2173 | * takes priority over what's sent in the uid argument. | |
2174 | * We must unlock inode here before calling dqget if | |
2175 | * we're not sending the inode, because otherwise | |
2176 | * we'll deadlock by doing trans_reserve while | |
2177 | * holding ilock. | |
2178 | */ | |
2179 | xfs_iunlock(ip, lockflags); | |
2180 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t) uid, | |
2181 | XFS_DQ_USER, | |
2182 | XFS_QMOPT_DQALLOC | | |
2183 | XFS_QMOPT_DOWARN, | |
2184 | &uq))) { | |
2185 | ASSERT(error != ENOENT); | |
014c2544 | 2186 | return error; |
1da177e4 LT |
2187 | } |
2188 | /* | |
2189 | * Get the ilock in the right order. | |
2190 | */ | |
2191 | xfs_dqunlock(uq); | |
2192 | lockflags = XFS_ILOCK_SHARED; | |
2193 | xfs_ilock(ip, lockflags); | |
2194 | } else { | |
2195 | /* | |
2196 | * Take an extra reference, because we'll return | |
2197 | * this to caller | |
2198 | */ | |
2199 | ASSERT(ip->i_udquot); | |
2200 | uq = ip->i_udquot; | |
2201 | xfs_dqlock(uq); | |
2202 | XFS_DQHOLD(uq); | |
2203 | xfs_dqunlock(uq); | |
2204 | } | |
2205 | } | |
c8ad20ff | 2206 | if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { |
1da177e4 LT |
2207 | if (ip->i_d.di_gid != gid) { |
2208 | xfs_iunlock(ip, lockflags); | |
2209 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)gid, | |
2210 | XFS_DQ_GROUP, | |
2211 | XFS_QMOPT_DQALLOC | | |
2212 | XFS_QMOPT_DOWARN, | |
2213 | &gq))) { | |
2214 | if (uq) | |
2215 | xfs_qm_dqrele(uq); | |
2216 | ASSERT(error != ENOENT); | |
014c2544 | 2217 | return error; |
1da177e4 LT |
2218 | } |
2219 | xfs_dqunlock(gq); | |
2220 | lockflags = XFS_ILOCK_SHARED; | |
2221 | xfs_ilock(ip, lockflags); | |
2222 | } else { | |
2223 | ASSERT(ip->i_gdquot); | |
2224 | gq = ip->i_gdquot; | |
2225 | xfs_dqlock(gq); | |
2226 | XFS_DQHOLD(gq); | |
2227 | xfs_dqunlock(gq); | |
2228 | } | |
c8ad20ff | 2229 | } else if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 2230 | if (xfs_get_projid(ip) != prid) { |
c8ad20ff NS |
2231 | xfs_iunlock(ip, lockflags); |
2232 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, | |
2233 | XFS_DQ_PROJ, | |
2234 | XFS_QMOPT_DQALLOC | | |
2235 | XFS_QMOPT_DOWARN, | |
2236 | &gq))) { | |
2237 | if (uq) | |
2238 | xfs_qm_dqrele(uq); | |
2239 | ASSERT(error != ENOENT); | |
2240 | return (error); | |
2241 | } | |
2242 | xfs_dqunlock(gq); | |
2243 | lockflags = XFS_ILOCK_SHARED; | |
2244 | xfs_ilock(ip, lockflags); | |
2245 | } else { | |
2246 | ASSERT(ip->i_gdquot); | |
2247 | gq = ip->i_gdquot; | |
2248 | xfs_dqlock(gq); | |
2249 | XFS_DQHOLD(gq); | |
2250 | xfs_dqunlock(gq); | |
2251 | } | |
1da177e4 LT |
2252 | } |
2253 | if (uq) | |
0b1b213f | 2254 | trace_xfs_dquot_dqalloc(ip); |
1da177e4 LT |
2255 | |
2256 | xfs_iunlock(ip, lockflags); | |
2257 | if (O_udqpp) | |
2258 | *O_udqpp = uq; | |
2259 | else if (uq) | |
2260 | xfs_qm_dqrele(uq); | |
2261 | if (O_gdqpp) | |
2262 | *O_gdqpp = gq; | |
2263 | else if (gq) | |
2264 | xfs_qm_dqrele(gq); | |
014c2544 | 2265 | return 0; |
1da177e4 LT |
2266 | } |
2267 | ||
2268 | /* | |
2269 | * Actually transfer ownership, and do dquot modifications. | |
2270 | * These were already reserved. | |
2271 | */ | |
2272 | xfs_dquot_t * | |
2273 | xfs_qm_vop_chown( | |
2274 | xfs_trans_t *tp, | |
2275 | xfs_inode_t *ip, | |
2276 | xfs_dquot_t **IO_olddq, | |
2277 | xfs_dquot_t *newdq) | |
2278 | { | |
2279 | xfs_dquot_t *prevdq; | |
06d10dd9 NS |
2280 | uint bfield = XFS_IS_REALTIME_INODE(ip) ? |
2281 | XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; | |
2282 | ||
7d095257 | 2283 | |
579aa9ca | 2284 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
2285 | ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); |
2286 | ||
2287 | /* old dquot */ | |
2288 | prevdq = *IO_olddq; | |
2289 | ASSERT(prevdq); | |
2290 | ASSERT(prevdq != newdq); | |
2291 | ||
06d10dd9 NS |
2292 | xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); |
2293 | xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); | |
1da177e4 LT |
2294 | |
2295 | /* the sparkling new dquot */ | |
06d10dd9 NS |
2296 | xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); |
2297 | xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); | |
1da177e4 LT |
2298 | |
2299 | /* | |
2300 | * Take an extra reference, because the inode | |
2301 | * is going to keep this dquot pointer even | |
2302 | * after the trans_commit. | |
2303 | */ | |
2304 | xfs_dqlock(newdq); | |
2305 | XFS_DQHOLD(newdq); | |
2306 | xfs_dqunlock(newdq); | |
2307 | *IO_olddq = newdq; | |
2308 | ||
014c2544 | 2309 | return prevdq; |
1da177e4 LT |
2310 | } |
2311 | ||
2312 | /* | |
c8ad20ff | 2313 | * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). |
1da177e4 LT |
2314 | */ |
2315 | int | |
2316 | xfs_qm_vop_chown_reserve( | |
2317 | xfs_trans_t *tp, | |
2318 | xfs_inode_t *ip, | |
2319 | xfs_dquot_t *udqp, | |
2320 | xfs_dquot_t *gdqp, | |
2321 | uint flags) | |
2322 | { | |
7d095257 | 2323 | xfs_mount_t *mp = ip->i_mount; |
9a2a7de2 | 2324 | uint delblks, blkflags, prjflags = 0; |
1da177e4 | 2325 | xfs_dquot_t *unresudq, *unresgdq, *delblksudq, *delblksgdq; |
7d095257 CH |
2326 | int error; |
2327 | ||
1da177e4 | 2328 | |
579aa9ca | 2329 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); |
1da177e4 LT |
2330 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
2331 | ||
2332 | delblks = ip->i_delayed_blks; | |
2333 | delblksudq = delblksgdq = unresudq = unresgdq = NULL; | |
06d10dd9 NS |
2334 | blkflags = XFS_IS_REALTIME_INODE(ip) ? |
2335 | XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; | |
1da177e4 LT |
2336 | |
2337 | if (XFS_IS_UQUOTA_ON(mp) && udqp && | |
1149d96a | 2338 | ip->i_d.di_uid != (uid_t)be32_to_cpu(udqp->q_core.d_id)) { |
1da177e4 LT |
2339 | delblksudq = udqp; |
2340 | /* | |
2341 | * If there are delayed allocation blocks, then we have to | |
2342 | * unreserve those from the old dquot, and add them to the | |
2343 | * new dquot. | |
2344 | */ | |
2345 | if (delblks) { | |
2346 | ASSERT(ip->i_udquot); | |
2347 | unresudq = ip->i_udquot; | |
2348 | } | |
2349 | } | |
c8ad20ff | 2350 | if (XFS_IS_OQUOTA_ON(ip->i_mount) && gdqp) { |
9a2a7de2 | 2351 | if (XFS_IS_PQUOTA_ON(ip->i_mount) && |
6743099c | 2352 | xfs_get_projid(ip) != be32_to_cpu(gdqp->q_core.d_id)) |
9a2a7de2 NS |
2353 | prjflags = XFS_QMOPT_ENOSPC; |
2354 | ||
2355 | if (prjflags || | |
2356 | (XFS_IS_GQUOTA_ON(ip->i_mount) && | |
2357 | ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id))) { | |
c8ad20ff NS |
2358 | delblksgdq = gdqp; |
2359 | if (delblks) { | |
2360 | ASSERT(ip->i_gdquot); | |
2361 | unresgdq = ip->i_gdquot; | |
2362 | } | |
1da177e4 LT |
2363 | } |
2364 | } | |
2365 | ||
2366 | if ((error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, | |
2367 | delblksudq, delblksgdq, ip->i_d.di_nblocks, 1, | |
9a2a7de2 | 2368 | flags | blkflags | prjflags))) |
1da177e4 LT |
2369 | return (error); |
2370 | ||
2371 | /* | |
2372 | * Do the delayed blks reservations/unreservations now. Since, these | |
2373 | * are done without the help of a transaction, if a reservation fails | |
2374 | * its previous reservations won't be automatically undone by trans | |
2375 | * code. So, we have to do it manually here. | |
2376 | */ | |
2377 | if (delblks) { | |
2378 | /* | |
2379 | * Do the reservations first. Unreservation can't fail. | |
2380 | */ | |
2381 | ASSERT(delblksudq || delblksgdq); | |
2382 | ASSERT(unresudq || unresgdq); | |
2383 | if ((error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
2384 | delblksudq, delblksgdq, (xfs_qcnt_t)delblks, 0, | |
9a2a7de2 | 2385 | flags | blkflags | prjflags))) |
1da177e4 LT |
2386 | return (error); |
2387 | xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
2388 | unresudq, unresgdq, -((xfs_qcnt_t)delblks), 0, | |
06d10dd9 | 2389 | blkflags); |
1da177e4 LT |
2390 | } |
2391 | ||
2392 | return (0); | |
2393 | } | |
2394 | ||
2395 | int | |
2396 | xfs_qm_vop_rename_dqattach( | |
7d095257 | 2397 | struct xfs_inode **i_tab) |
1da177e4 | 2398 | { |
7d095257 CH |
2399 | struct xfs_mount *mp = i_tab[0]->i_mount; |
2400 | int i; | |
1da177e4 | 2401 | |
7d095257 | 2402 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
014c2544 | 2403 | return 0; |
1da177e4 | 2404 | |
7d095257 CH |
2405 | for (i = 0; (i < 4 && i_tab[i]); i++) { |
2406 | struct xfs_inode *ip = i_tab[i]; | |
2407 | int error; | |
2408 | ||
1da177e4 LT |
2409 | /* |
2410 | * Watch out for duplicate entries in the table. | |
2411 | */ | |
7d095257 CH |
2412 | if (i == 0 || ip != i_tab[i-1]) { |
2413 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
1da177e4 LT |
2414 | error = xfs_qm_dqattach(ip, 0); |
2415 | if (error) | |
014c2544 | 2416 | return error; |
1da177e4 LT |
2417 | } |
2418 | } | |
2419 | } | |
014c2544 | 2420 | return 0; |
1da177e4 LT |
2421 | } |
2422 | ||
2423 | void | |
7d095257 CH |
2424 | xfs_qm_vop_create_dqattach( |
2425 | struct xfs_trans *tp, | |
2426 | struct xfs_inode *ip, | |
2427 | struct xfs_dquot *udqp, | |
2428 | struct xfs_dquot *gdqp) | |
1da177e4 | 2429 | { |
7d095257 CH |
2430 | struct xfs_mount *mp = tp->t_mountp; |
2431 | ||
2432 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) | |
1da177e4 LT |
2433 | return; |
2434 | ||
579aa9ca | 2435 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
7d095257 | 2436 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1da177e4 LT |
2437 | |
2438 | if (udqp) { | |
2439 | xfs_dqlock(udqp); | |
2440 | XFS_DQHOLD(udqp); | |
2441 | xfs_dqunlock(udqp); | |
2442 | ASSERT(ip->i_udquot == NULL); | |
2443 | ip->i_udquot = udqp; | |
7d095257 | 2444 | ASSERT(XFS_IS_UQUOTA_ON(mp)); |
1149d96a | 2445 | ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); |
1da177e4 LT |
2446 | xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); |
2447 | } | |
2448 | if (gdqp) { | |
2449 | xfs_dqlock(gdqp); | |
2450 | XFS_DQHOLD(gdqp); | |
2451 | xfs_dqunlock(gdqp); | |
2452 | ASSERT(ip->i_gdquot == NULL); | |
2453 | ip->i_gdquot = gdqp; | |
7d095257 CH |
2454 | ASSERT(XFS_IS_OQUOTA_ON(mp)); |
2455 | ASSERT((XFS_IS_GQUOTA_ON(mp) ? | |
6743099c | 2456 | ip->i_d.di_gid : xfs_get_projid(ip)) == |
ee2a4f7c | 2457 | be32_to_cpu(gdqp->q_core.d_id)); |
1da177e4 LT |
2458 | xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); |
2459 | } | |
2460 | } | |
2461 |