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Commit | Line | Data |
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1da177e4 | 1 | /* |
4ce3121f NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
4ce3121f NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
4ce3121f NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
4ce3121f NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 LT |
18 | #include "xfs.h" |
19 | #include "xfs_fs.h" | |
a844f451 | 20 | #include "xfs_bit.h" |
1da177e4 | 21 | #include "xfs_log.h" |
a844f451 | 22 | #include "xfs_inum.h" |
1da177e4 LT |
23 | #include "xfs_trans.h" |
24 | #include "xfs_sb.h" | |
25 | #include "xfs_ag.h" | |
1da177e4 | 26 | #include "xfs_alloc.h" |
1da177e4 LT |
27 | #include "xfs_quota.h" |
28 | #include "xfs_mount.h" | |
1da177e4 LT |
29 | #include "xfs_bmap_btree.h" |
30 | #include "xfs_ialloc_btree.h" | |
1da177e4 LT |
31 | #include "xfs_dinode.h" |
32 | #include "xfs_inode.h" | |
a844f451 NS |
33 | #include "xfs_ialloc.h" |
34 | #include "xfs_itable.h" | |
1da177e4 LT |
35 | #include "xfs_rtalloc.h" |
36 | #include "xfs_error.h" | |
a844f451 | 37 | #include "xfs_bmap.h" |
1da177e4 LT |
38 | #include "xfs_attr.h" |
39 | #include "xfs_buf_item.h" | |
40 | #include "xfs_trans_space.h" | |
41 | #include "xfs_utils.h" | |
1da177e4 | 42 | #include "xfs_qm.h" |
0b1b213f | 43 | #include "xfs_trace.h" |
1da177e4 LT |
44 | |
45 | /* | |
46 | * The global quota manager. There is only one of these for the entire | |
47 | * system, _not_ one per file system. XQM keeps track of the overall | |
48 | * quota functionality, including maintaining the freelist and hash | |
49 | * tables of dquots. | |
50 | */ | |
a0b0b8a5 | 51 | struct mutex xfs_Gqm_lock; |
1da177e4 | 52 | struct xfs_qm *xfs_Gqm; |
6b3f6b5b | 53 | uint ndquot; |
1da177e4 LT |
54 | |
55 | kmem_zone_t *qm_dqzone; | |
56 | kmem_zone_t *qm_dqtrxzone; | |
1da177e4 LT |
57 | |
58 | STATIC void xfs_qm_list_init(xfs_dqlist_t *, char *, int); | |
59 | STATIC void xfs_qm_list_destroy(xfs_dqlist_t *); | |
60 | ||
61 | STATIC int xfs_qm_init_quotainos(xfs_mount_t *); | |
ba0f32d4 | 62 | STATIC int xfs_qm_init_quotainfo(xfs_mount_t *); |
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) { | |
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; | |
464 | int niters; | |
465 | int error; | |
1da177e4 | 466 | |
8a7b8a89 | 467 | if (!q) |
014c2544 | 468 | return 0; |
1da177e4 LT |
469 | niters = 0; |
470 | again: | |
8a7b8a89 CH |
471 | mutex_lock(&q->qi_dqlist_lock); |
472 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 LT |
473 | xfs_dqlock(dqp); |
474 | if (! XFS_DQ_IS_DIRTY(dqp)) { | |
475 | xfs_dqunlock(dqp); | |
476 | continue; | |
477 | } | |
0b1b213f | 478 | |
1da177e4 | 479 | /* XXX a sentinel would be better */ |
8a7b8a89 | 480 | recl = q->qi_dqreclaims; |
e1f49cf2 | 481 | if (!xfs_dqflock_nowait(dqp)) { |
1da177e4 LT |
482 | /* |
483 | * If we can't grab the flush lock then check | |
484 | * to see if the dquot has been flushed delayed | |
485 | * write. If so, grab its buffer and send it | |
486 | * out immediately. We'll be able to acquire | |
487 | * the flush lock when the I/O completes. | |
488 | */ | |
489 | xfs_qm_dqflock_pushbuf_wait(dqp); | |
490 | } | |
491 | /* | |
492 | * Let go of the mplist lock. We don't want to hold it | |
493 | * across a disk write. | |
494 | */ | |
8a7b8a89 | 495 | mutex_unlock(&q->qi_dqlist_lock); |
20026d92 | 496 | error = xfs_qm_dqflush(dqp, sync_mode); |
1da177e4 LT |
497 | xfs_dqunlock(dqp); |
498 | if (error) | |
014c2544 | 499 | return error; |
1da177e4 | 500 | |
8a7b8a89 CH |
501 | mutex_lock(&q->qi_dqlist_lock); |
502 | if (recl != q->qi_dqreclaims) { | |
503 | mutex_unlock(&q->qi_dqlist_lock); | |
1da177e4 LT |
504 | /* XXX restart limit */ |
505 | goto again; | |
506 | } | |
507 | } | |
508 | ||
8a7b8a89 | 509 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 | 510 | /* return ! busy */ |
014c2544 | 511 | return 0; |
1da177e4 LT |
512 | } |
513 | /* | |
514 | * Release the group dquot pointers the user dquots may be | |
515 | * carrying around as a hint. mplist is locked on entry and exit. | |
516 | */ | |
517 | STATIC void | |
518 | xfs_qm_detach_gdquots( | |
8a7b8a89 | 519 | struct xfs_mount *mp) |
1da177e4 | 520 | { |
8a7b8a89 CH |
521 | struct xfs_quotainfo *q = mp->m_quotainfo; |
522 | struct xfs_dquot *dqp, *gdqp; | |
523 | int nrecl; | |
1da177e4 LT |
524 | |
525 | again: | |
8a7b8a89 CH |
526 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
527 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 LT |
528 | xfs_dqlock(dqp); |
529 | if ((gdqp = dqp->q_gdquot)) { | |
530 | xfs_dqlock(gdqp); | |
531 | dqp->q_gdquot = NULL; | |
532 | } | |
533 | xfs_dqunlock(dqp); | |
534 | ||
535 | if (gdqp) { | |
536 | /* | |
537 | * Can't hold the mplist lock across a dqput. | |
538 | * XXXmust convert to marker based iterations here. | |
539 | */ | |
8a7b8a89 CH |
540 | nrecl = q->qi_dqreclaims; |
541 | mutex_unlock(&q->qi_dqlist_lock); | |
1da177e4 LT |
542 | xfs_qm_dqput(gdqp); |
543 | ||
8a7b8a89 CH |
544 | mutex_lock(&q->qi_dqlist_lock); |
545 | if (nrecl != q->qi_dqreclaims) | |
1da177e4 LT |
546 | goto again; |
547 | } | |
1da177e4 LT |
548 | } |
549 | } | |
550 | ||
551 | /* | |
552 | * Go through all the incore dquots of this file system and take them | |
553 | * off the mplist and hashlist, if the dquot type matches the dqtype | |
554 | * parameter. This is used when turning off quota accounting for | |
555 | * users and/or groups, as well as when the filesystem is unmounting. | |
556 | */ | |
557 | STATIC int | |
558 | xfs_qm_dqpurge_int( | |
8a7b8a89 CH |
559 | struct xfs_mount *mp, |
560 | uint flags) | |
1da177e4 | 561 | { |
8a7b8a89 CH |
562 | struct xfs_quotainfo *q = mp->m_quotainfo; |
563 | struct xfs_dquot *dqp, *n; | |
564 | uint dqtype; | |
565 | int nrecl; | |
566 | int nmisses; | |
1da177e4 | 567 | |
8a7b8a89 | 568 | if (!q) |
014c2544 | 569 | return 0; |
1da177e4 LT |
570 | |
571 | dqtype = (flags & XFS_QMOPT_UQUOTA) ? XFS_DQ_USER : 0; | |
c8ad20ff | 572 | dqtype |= (flags & XFS_QMOPT_PQUOTA) ? XFS_DQ_PROJ : 0; |
1da177e4 LT |
573 | dqtype |= (flags & XFS_QMOPT_GQUOTA) ? XFS_DQ_GROUP : 0; |
574 | ||
8a7b8a89 | 575 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
576 | |
577 | /* | |
578 | * In the first pass through all incore dquots of this filesystem, | |
579 | * we release the group dquot pointers the user dquots may be | |
580 | * carrying around as a hint. We need to do this irrespective of | |
581 | * what's being turned off. | |
582 | */ | |
583 | xfs_qm_detach_gdquots(mp); | |
584 | ||
585 | again: | |
586 | nmisses = 0; | |
8a7b8a89 | 587 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
1da177e4 LT |
588 | /* |
589 | * Try to get rid of all of the unwanted dquots. The idea is to | |
590 | * get them off mplist and hashlist, but leave them on freelist. | |
591 | */ | |
8a7b8a89 | 592 | list_for_each_entry_safe(dqp, n, &q->qi_dqlist, q_mplist) { |
1da177e4 LT |
593 | /* |
594 | * It's OK to look at the type without taking dqlock here. | |
595 | * We're holding the mplist lock here, and that's needed for | |
596 | * a dqreclaim. | |
597 | */ | |
3a25404b | 598 | if ((dqp->dq_flags & dqtype) == 0) |
1da177e4 | 599 | continue; |
1da177e4 | 600 | |
c9a192dc | 601 | if (!mutex_trylock(&dqp->q_hash->qh_lock)) { |
8a7b8a89 CH |
602 | nrecl = q->qi_dqreclaims; |
603 | mutex_unlock(&q->qi_dqlist_lock); | |
c9a192dc | 604 | mutex_lock(&dqp->q_hash->qh_lock); |
8a7b8a89 | 605 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
606 | |
607 | /* | |
608 | * XXXTheoretically, we can get into a very long | |
609 | * ping pong game here. | |
610 | * No one can be adding dquots to the mplist at | |
611 | * this point, but somebody might be taking things off. | |
612 | */ | |
8a7b8a89 | 613 | if (nrecl != q->qi_dqreclaims) { |
c9a192dc | 614 | mutex_unlock(&dqp->q_hash->qh_lock); |
1da177e4 LT |
615 | goto again; |
616 | } | |
617 | } | |
618 | ||
619 | /* | |
620 | * Take the dquot off the mplist and hashlist. It may remain on | |
621 | * freelist in INACTIVE state. | |
622 | */ | |
4f0e8a98 | 623 | nmisses += xfs_qm_dqpurge(dqp); |
1da177e4 | 624 | } |
8a7b8a89 | 625 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 LT |
626 | return nmisses; |
627 | } | |
628 | ||
629 | int | |
630 | xfs_qm_dqpurge_all( | |
631 | xfs_mount_t *mp, | |
632 | uint flags) | |
633 | { | |
634 | int ndquots; | |
635 | ||
636 | /* | |
637 | * Purge the dquot cache. | |
638 | * None of the dquots should really be busy at this point. | |
639 | */ | |
640 | if (mp->m_quotainfo) { | |
641 | while ((ndquots = xfs_qm_dqpurge_int(mp, flags))) { | |
642 | delay(ndquots * 10); | |
643 | } | |
644 | } | |
645 | return 0; | |
646 | } | |
647 | ||
648 | STATIC int | |
649 | xfs_qm_dqattach_one( | |
650 | xfs_inode_t *ip, | |
651 | xfs_dqid_t id, | |
652 | uint type, | |
653 | uint doalloc, | |
1da177e4 LT |
654 | xfs_dquot_t *udqhint, /* hint */ |
655 | xfs_dquot_t **IO_idqpp) | |
656 | { | |
657 | xfs_dquot_t *dqp; | |
658 | int error; | |
659 | ||
579aa9ca | 660 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 661 | error = 0; |
8e9b6e7f | 662 | |
1da177e4 LT |
663 | /* |
664 | * See if we already have it in the inode itself. IO_idqpp is | |
665 | * &i_udquot or &i_gdquot. This made the code look weird, but | |
666 | * made the logic a lot simpler. | |
667 | */ | |
8e9b6e7f CH |
668 | dqp = *IO_idqpp; |
669 | if (dqp) { | |
0b1b213f | 670 | trace_xfs_dqattach_found(dqp); |
8e9b6e7f | 671 | return 0; |
1da177e4 LT |
672 | } |
673 | ||
674 | /* | |
675 | * udqhint is the i_udquot field in inode, and is non-NULL only | |
c8ad20ff | 676 | * when the type arg is group/project. Its purpose is to save a |
1da177e4 LT |
677 | * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside |
678 | * the user dquot. | |
679 | */ | |
8e9b6e7f CH |
680 | if (udqhint) { |
681 | ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); | |
1da177e4 LT |
682 | xfs_dqlock(udqhint); |
683 | ||
8e9b6e7f CH |
684 | /* |
685 | * No need to take dqlock to look at the id. | |
686 | * | |
687 | * The ID can't change until it gets reclaimed, and it won't | |
688 | * be reclaimed as long as we have a ref from inode and we | |
689 | * hold the ilock. | |
690 | */ | |
691 | dqp = udqhint->q_gdquot; | |
692 | if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) { | |
693 | xfs_dqlock(dqp); | |
694 | XFS_DQHOLD(dqp); | |
695 | ASSERT(*IO_idqpp == NULL); | |
696 | *IO_idqpp = dqp; | |
697 | ||
1da177e4 LT |
698 | xfs_dqunlock(dqp); |
699 | xfs_dqunlock(udqhint); | |
8e9b6e7f | 700 | return 0; |
1da177e4 | 701 | } |
8e9b6e7f CH |
702 | |
703 | /* | |
704 | * We can't hold a dquot lock when we call the dqget code. | |
705 | * We'll deadlock in no time, because of (not conforming to) | |
706 | * lock ordering - the inodelock comes before any dquot lock, | |
707 | * and we may drop and reacquire the ilock in xfs_qm_dqget(). | |
708 | */ | |
1da177e4 | 709 | xfs_dqunlock(udqhint); |
8e9b6e7f CH |
710 | } |
711 | ||
1da177e4 LT |
712 | /* |
713 | * Find the dquot from somewhere. This bumps the | |
714 | * reference count of dquot and returns it locked. | |
715 | * This can return ENOENT if dquot didn't exist on | |
716 | * disk and we didn't ask it to allocate; | |
717 | * ESRCH if quotas got turned off suddenly. | |
718 | */ | |
8e9b6e7f CH |
719 | error = xfs_qm_dqget(ip->i_mount, ip, id, type, XFS_QMOPT_DOWARN, &dqp); |
720 | if (error) | |
721 | return error; | |
1da177e4 | 722 | |
0b1b213f | 723 | trace_xfs_dqattach_get(dqp); |
8e9b6e7f | 724 | |
1da177e4 LT |
725 | /* |
726 | * dqget may have dropped and re-acquired the ilock, but it guarantees | |
727 | * that the dquot returned is the one that should go in the inode. | |
728 | */ | |
729 | *IO_idqpp = dqp; | |
8e9b6e7f CH |
730 | xfs_dqunlock(dqp); |
731 | return 0; | |
1da177e4 LT |
732 | } |
733 | ||
734 | ||
735 | /* | |
736 | * Given a udquot and gdquot, attach a ptr to the group dquot in the | |
737 | * udquot as a hint for future lookups. The idea sounds simple, but the | |
738 | * execution isn't, because the udquot might have a group dquot attached | |
c41564b5 | 739 | * already and getting rid of that gets us into lock ordering constraints. |
1da177e4 LT |
740 | * The process is complicated more by the fact that the dquots may or may not |
741 | * be locked on entry. | |
742 | */ | |
743 | STATIC void | |
744 | xfs_qm_dqattach_grouphint( | |
745 | xfs_dquot_t *udq, | |
8e9b6e7f | 746 | xfs_dquot_t *gdq) |
1da177e4 LT |
747 | { |
748 | xfs_dquot_t *tmp; | |
749 | ||
8e9b6e7f | 750 | xfs_dqlock(udq); |
1da177e4 LT |
751 | |
752 | if ((tmp = udq->q_gdquot)) { | |
753 | if (tmp == gdq) { | |
8e9b6e7f | 754 | xfs_dqunlock(udq); |
1da177e4 LT |
755 | return; |
756 | } | |
757 | ||
758 | udq->q_gdquot = NULL; | |
759 | /* | |
760 | * We can't keep any dqlocks when calling dqrele, | |
761 | * because the freelist lock comes before dqlocks. | |
762 | */ | |
763 | xfs_dqunlock(udq); | |
1da177e4 LT |
764 | /* |
765 | * we took a hard reference once upon a time in dqget, | |
766 | * so give it back when the udquot no longer points at it | |
767 | * dqput() does the unlocking of the dquot. | |
768 | */ | |
769 | xfs_qm_dqrele(tmp); | |
770 | ||
771 | xfs_dqlock(udq); | |
772 | xfs_dqlock(gdq); | |
773 | ||
774 | } else { | |
775 | ASSERT(XFS_DQ_IS_LOCKED(udq)); | |
8e9b6e7f | 776 | xfs_dqlock(gdq); |
1da177e4 LT |
777 | } |
778 | ||
779 | ASSERT(XFS_DQ_IS_LOCKED(udq)); | |
780 | ASSERT(XFS_DQ_IS_LOCKED(gdq)); | |
781 | /* | |
782 | * Somebody could have attached a gdquot here, | |
783 | * when we dropped the uqlock. If so, just do nothing. | |
784 | */ | |
785 | if (udq->q_gdquot == NULL) { | |
786 | XFS_DQHOLD(gdq); | |
787 | udq->q_gdquot = gdq; | |
788 | } | |
8e9b6e7f CH |
789 | |
790 | xfs_dqunlock(gdq); | |
791 | xfs_dqunlock(udq); | |
1da177e4 LT |
792 | } |
793 | ||
794 | ||
795 | /* | |
c8ad20ff NS |
796 | * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON |
797 | * into account. | |
1da177e4 | 798 | * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. |
1da177e4 LT |
799 | * Inode may get unlocked and relocked in here, and the caller must deal with |
800 | * the consequences. | |
801 | */ | |
802 | int | |
7d095257 | 803 | xfs_qm_dqattach_locked( |
1da177e4 LT |
804 | xfs_inode_t *ip, |
805 | uint flags) | |
806 | { | |
807 | xfs_mount_t *mp = ip->i_mount; | |
808 | uint nquotas = 0; | |
809 | int error = 0; | |
810 | ||
7d095257 CH |
811 | if (!XFS_IS_QUOTA_RUNNING(mp) || |
812 | !XFS_IS_QUOTA_ON(mp) || | |
813 | !XFS_NOT_DQATTACHED(mp, ip) || | |
814 | ip->i_ino == mp->m_sb.sb_uquotino || | |
815 | ip->i_ino == mp->m_sb.sb_gquotino) | |
014c2544 | 816 | return 0; |
1da177e4 | 817 | |
7d095257 | 818 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
819 | |
820 | if (XFS_IS_UQUOTA_ON(mp)) { | |
821 | error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, | |
822 | flags & XFS_QMOPT_DQALLOC, | |
1da177e4 LT |
823 | NULL, &ip->i_udquot); |
824 | if (error) | |
825 | goto done; | |
826 | nquotas++; | |
827 | } | |
579aa9ca CH |
828 | |
829 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); | |
c8ad20ff NS |
830 | if (XFS_IS_OQUOTA_ON(mp)) { |
831 | error = XFS_IS_GQUOTA_ON(mp) ? | |
832 | xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, | |
833 | flags & XFS_QMOPT_DQALLOC, | |
c8ad20ff | 834 | ip->i_udquot, &ip->i_gdquot) : |
6743099c | 835 | xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ, |
1da177e4 | 836 | flags & XFS_QMOPT_DQALLOC, |
1da177e4 LT |
837 | ip->i_udquot, &ip->i_gdquot); |
838 | /* | |
839 | * Don't worry about the udquot that we may have | |
840 | * attached above. It'll get detached, if not already. | |
841 | */ | |
842 | if (error) | |
843 | goto done; | |
844 | nquotas++; | |
845 | } | |
846 | ||
847 | /* | |
848 | * Attach this group quota to the user quota as a hint. | |
849 | * This WON'T, in general, result in a thrash. | |
850 | */ | |
851 | if (nquotas == 2) { | |
579aa9ca | 852 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
853 | ASSERT(ip->i_udquot); |
854 | ASSERT(ip->i_gdquot); | |
855 | ||
856 | /* | |
857 | * We may or may not have the i_udquot locked at this point, | |
858 | * but this check is OK since we don't depend on the i_gdquot to | |
859 | * be accurate 100% all the time. It is just a hint, and this | |
860 | * will succeed in general. | |
861 | */ | |
862 | if (ip->i_udquot->q_gdquot == ip->i_gdquot) | |
863 | goto done; | |
864 | /* | |
865 | * Attach i_gdquot to the gdquot hint inside the i_udquot. | |
866 | */ | |
8e9b6e7f | 867 | xfs_qm_dqattach_grouphint(ip->i_udquot, ip->i_gdquot); |
1da177e4 LT |
868 | } |
869 | ||
7d095257 | 870 | done: |
1da177e4 LT |
871 | #ifdef QUOTADEBUG |
872 | if (! error) { | |
1da177e4 LT |
873 | if (XFS_IS_UQUOTA_ON(mp)) |
874 | ASSERT(ip->i_udquot); | |
c8ad20ff | 875 | if (XFS_IS_OQUOTA_ON(mp)) |
1da177e4 LT |
876 | ASSERT(ip->i_gdquot); |
877 | } | |
7d095257 | 878 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 879 | #endif |
7d095257 CH |
880 | return error; |
881 | } | |
1da177e4 | 882 | |
7d095257 CH |
883 | int |
884 | xfs_qm_dqattach( | |
885 | struct xfs_inode *ip, | |
886 | uint flags) | |
887 | { | |
888 | int error; | |
889 | ||
890 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
891 | error = xfs_qm_dqattach_locked(ip, flags); | |
892 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1da177e4 | 893 | |
014c2544 | 894 | return error; |
1da177e4 LT |
895 | } |
896 | ||
897 | /* | |
898 | * Release dquots (and their references) if any. | |
899 | * The inode should be locked EXCL except when this's called by | |
900 | * xfs_ireclaim. | |
901 | */ | |
902 | void | |
903 | xfs_qm_dqdetach( | |
904 | xfs_inode_t *ip) | |
905 | { | |
906 | if (!(ip->i_udquot || ip->i_gdquot)) | |
907 | return; | |
908 | ||
0b1b213f CH |
909 | trace_xfs_dquot_dqdetach(ip); |
910 | ||
1da177e4 LT |
911 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_uquotino); |
912 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_gquotino); | |
1da177e4 LT |
913 | if (ip->i_udquot) { |
914 | xfs_qm_dqrele(ip->i_udquot); | |
915 | ip->i_udquot = NULL; | |
916 | } | |
917 | if (ip->i_gdquot) { | |
918 | xfs_qm_dqrele(ip->i_gdquot); | |
919 | ip->i_gdquot = NULL; | |
920 | } | |
921 | } | |
922 | ||
1da177e4 LT |
923 | int |
924 | xfs_qm_sync( | |
8a7b8a89 CH |
925 | struct xfs_mount *mp, |
926 | int flags) | |
1da177e4 | 927 | { |
8a7b8a89 CH |
928 | struct xfs_quotainfo *q = mp->m_quotainfo; |
929 | int recl, restarts; | |
930 | struct xfs_dquot *dqp; | |
931 | int error; | |
1da177e4 | 932 | |
7d095257 | 933 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
d757762b DD |
934 | return 0; |
935 | ||
1da177e4 | 936 | restarts = 0; |
1da177e4 LT |
937 | |
938 | again: | |
8a7b8a89 | 939 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
940 | /* |
941 | * dqpurge_all() also takes the mplist lock and iterate thru all dquots | |
942 | * in quotaoff. However, if the QUOTA_ACTIVE bits are not cleared | |
943 | * when we have the mplist lock, we know that dquots will be consistent | |
944 | * as long as we have it locked. | |
945 | */ | |
3a25404b | 946 | if (!XFS_IS_QUOTA_ON(mp)) { |
8a7b8a89 | 947 | mutex_unlock(&q->qi_dqlist_lock); |
014c2544 | 948 | return 0; |
1da177e4 | 949 | } |
8a7b8a89 CH |
950 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
951 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 LT |
952 | /* |
953 | * If this is vfs_sync calling, then skip the dquots that | |
954 | * don't 'seem' to be dirty. ie. don't acquire dqlock. | |
955 | * This is very similar to what xfs_sync does with inodes. | |
956 | */ | |
8b5403a6 CH |
957 | if (flags & SYNC_TRYLOCK) { |
958 | if (!XFS_DQ_IS_DIRTY(dqp)) | |
1da177e4 | 959 | continue; |
8b5403a6 | 960 | if (!xfs_qm_dqlock_nowait(dqp)) |
1da177e4 LT |
961 | continue; |
962 | } else { | |
963 | xfs_dqlock(dqp); | |
964 | } | |
965 | ||
966 | /* | |
967 | * Now, find out for sure if this dquot is dirty or not. | |
968 | */ | |
969 | if (! XFS_DQ_IS_DIRTY(dqp)) { | |
970 | xfs_dqunlock(dqp); | |
971 | continue; | |
972 | } | |
973 | ||
974 | /* XXX a sentinel would be better */ | |
8a7b8a89 | 975 | recl = q->qi_dqreclaims; |
e1f49cf2 | 976 | if (!xfs_dqflock_nowait(dqp)) { |
8b5403a6 | 977 | if (flags & SYNC_TRYLOCK) { |
1da177e4 LT |
978 | xfs_dqunlock(dqp); |
979 | continue; | |
980 | } | |
981 | /* | |
982 | * If we can't grab the flush lock then if the caller | |
c41564b5 | 983 | * really wanted us to give this our best shot, so |
1da177e4 LT |
984 | * see if we can give a push to the buffer before we wait |
985 | * on the flush lock. At this point, we know that | |
c41564b5 | 986 | * even though the dquot is being flushed, |
1da177e4 LT |
987 | * it has (new) dirty data. |
988 | */ | |
989 | xfs_qm_dqflock_pushbuf_wait(dqp); | |
990 | } | |
991 | /* | |
992 | * Let go of the mplist lock. We don't want to hold it | |
993 | * across a disk write | |
994 | */ | |
8a7b8a89 | 995 | mutex_unlock(&q->qi_dqlist_lock); |
20026d92 | 996 | error = xfs_qm_dqflush(dqp, flags); |
1da177e4 LT |
997 | xfs_dqunlock(dqp); |
998 | if (error && XFS_FORCED_SHUTDOWN(mp)) | |
014c2544 | 999 | return 0; /* Need to prevent umount failure */ |
1da177e4 | 1000 | else if (error) |
014c2544 | 1001 | return error; |
1da177e4 | 1002 | |
8a7b8a89 CH |
1003 | mutex_lock(&q->qi_dqlist_lock); |
1004 | if (recl != q->qi_dqreclaims) { | |
1da177e4 LT |
1005 | if (++restarts >= XFS_QM_SYNC_MAX_RESTARTS) |
1006 | break; | |
1007 | ||
8a7b8a89 | 1008 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 LT |
1009 | goto again; |
1010 | } | |
1011 | } | |
1012 | ||
8a7b8a89 | 1013 | mutex_unlock(&q->qi_dqlist_lock); |
014c2544 | 1014 | return 0; |
1da177e4 LT |
1015 | } |
1016 | ||
a4edd1da CH |
1017 | /* |
1018 | * The hash chains and the mplist use the same xfs_dqhash structure as | |
1019 | * their list head, but we can take the mplist qh_lock and one of the | |
1020 | * hash qh_locks at the same time without any problem as they aren't | |
1021 | * related. | |
1022 | */ | |
1023 | static struct lock_class_key xfs_quota_mplist_class; | |
1da177e4 LT |
1024 | |
1025 | /* | |
1026 | * This initializes all the quota information that's kept in the | |
1027 | * mount structure | |
1028 | */ | |
ba0f32d4 | 1029 | STATIC int |
1da177e4 LT |
1030 | xfs_qm_init_quotainfo( |
1031 | xfs_mount_t *mp) | |
1032 | { | |
1033 | xfs_quotainfo_t *qinf; | |
1034 | int error; | |
1035 | xfs_dquot_t *dqp; | |
1036 | ||
1037 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
1038 | ||
1039 | /* | |
1040 | * Tell XQM that we exist as soon as possible. | |
1041 | */ | |
1042 | if ((error = xfs_qm_hold_quotafs_ref(mp))) { | |
014c2544 | 1043 | return error; |
1da177e4 LT |
1044 | } |
1045 | ||
1046 | qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); | |
1047 | ||
1048 | /* | |
1049 | * See if quotainodes are setup, and if not, allocate them, | |
1050 | * and change the superblock accordingly. | |
1051 | */ | |
1052 | if ((error = xfs_qm_init_quotainos(mp))) { | |
f0e2d93c | 1053 | kmem_free(qinf); |
1da177e4 | 1054 | mp->m_quotainfo = NULL; |
014c2544 | 1055 | return error; |
1da177e4 LT |
1056 | } |
1057 | ||
3a25404b DC |
1058 | INIT_LIST_HEAD(&qinf->qi_dqlist); |
1059 | mutex_init(&qinf->qi_dqlist_lock); | |
1060 | lockdep_set_class(&qinf->qi_dqlist_lock, &xfs_quota_mplist_class); | |
a4edd1da | 1061 | |
1da177e4 LT |
1062 | qinf->qi_dqreclaims = 0; |
1063 | ||
1064 | /* mutex used to serialize quotaoffs */ | |
794ee1ba | 1065 | mutex_init(&qinf->qi_quotaofflock); |
1da177e4 LT |
1066 | |
1067 | /* Precalc some constants */ | |
1068 | qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
1069 | ASSERT(qinf->qi_dqchunklen); | |
1070 | qinf->qi_dqperchunk = BBTOB(qinf->qi_dqchunklen); | |
1071 | do_div(qinf->qi_dqperchunk, sizeof(xfs_dqblk_t)); | |
1072 | ||
1073 | mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); | |
1074 | ||
1075 | /* | |
1076 | * We try to get the limits from the superuser's limits fields. | |
1077 | * This is quite hacky, but it is standard quota practice. | |
1078 | * We look at the USR dquot with id == 0 first, but if user quotas | |
1079 | * are not enabled we goto the GRP dquot with id == 0. | |
1080 | * We don't really care to keep separate default limits for user | |
1081 | * and group quotas, at least not at this point. | |
1082 | */ | |
1083 | error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)0, | |
c8ad20ff NS |
1084 | XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : |
1085 | (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : | |
1086 | XFS_DQ_PROJ), | |
1da177e4 LT |
1087 | XFS_QMOPT_DQSUSER|XFS_QMOPT_DOWARN, |
1088 | &dqp); | |
1089 | if (! error) { | |
1090 | xfs_disk_dquot_t *ddqp = &dqp->q_core; | |
1091 | ||
1092 | /* | |
1093 | * The warnings and timers set the grace period given to | |
1094 | * a user or group before he or she can not perform any | |
1095 | * more writing. If it is zero, a default is used. | |
1096 | */ | |
1149d96a CH |
1097 | qinf->qi_btimelimit = ddqp->d_btimer ? |
1098 | be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; | |
1099 | qinf->qi_itimelimit = ddqp->d_itimer ? | |
1100 | be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; | |
1101 | qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? | |
1102 | be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; | |
1103 | qinf->qi_bwarnlimit = ddqp->d_bwarns ? | |
1104 | be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; | |
1105 | qinf->qi_iwarnlimit = ddqp->d_iwarns ? | |
1106 | be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; | |
1107 | qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? | |
1108 | be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; | |
1109 | qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); | |
1110 | qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); | |
1111 | qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); | |
1112 | qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); | |
1113 | qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); | |
1114 | qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); | |
1da177e4 LT |
1115 | |
1116 | /* | |
1117 | * We sent the XFS_QMOPT_DQSUSER flag to dqget because | |
1118 | * we don't want this dquot cached. We haven't done a | |
1119 | * quotacheck yet, and quotacheck doesn't like incore dquots. | |
1120 | */ | |
1121 | xfs_qm_dqdestroy(dqp); | |
1122 | } else { | |
1123 | qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; | |
1124 | qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; | |
1125 | qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; | |
1126 | qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; | |
1127 | qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; | |
06d10dd9 | 1128 | qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; |
1da177e4 LT |
1129 | } |
1130 | ||
014c2544 | 1131 | return 0; |
1da177e4 LT |
1132 | } |
1133 | ||
1134 | ||
1135 | /* | |
1136 | * Gets called when unmounting a filesystem or when all quotas get | |
1137 | * turned off. | |
1138 | * This purges the quota inodes, destroys locks and frees itself. | |
1139 | */ | |
1140 | void | |
1141 | xfs_qm_destroy_quotainfo( | |
1142 | xfs_mount_t *mp) | |
1143 | { | |
1144 | xfs_quotainfo_t *qi; | |
1145 | ||
1146 | qi = mp->m_quotainfo; | |
1147 | ASSERT(qi != NULL); | |
1148 | ASSERT(xfs_Gqm != NULL); | |
1149 | ||
1150 | /* | |
1151 | * Release the reference that XQM kept, so that we know | |
1152 | * when the XQM structure should be freed. We cannot assume | |
1153 | * that xfs_Gqm is non-null after this point. | |
1154 | */ | |
1155 | xfs_qm_rele_quotafs_ref(mp); | |
1156 | ||
3a25404b DC |
1157 | ASSERT(list_empty(&qi->qi_dqlist)); |
1158 | mutex_destroy(&qi->qi_dqlist_lock); | |
1da177e4 LT |
1159 | |
1160 | if (qi->qi_uquotaip) { | |
26cc0021 | 1161 | IRELE(qi->qi_uquotaip); |
1da177e4 LT |
1162 | qi->qi_uquotaip = NULL; /* paranoia */ |
1163 | } | |
1164 | if (qi->qi_gquotaip) { | |
26cc0021 | 1165 | IRELE(qi->qi_gquotaip); |
1da177e4 LT |
1166 | qi->qi_gquotaip = NULL; |
1167 | } | |
1168 | mutex_destroy(&qi->qi_quotaofflock); | |
f0e2d93c | 1169 | kmem_free(qi); |
1da177e4 LT |
1170 | mp->m_quotainfo = NULL; |
1171 | } | |
1172 | ||
1173 | ||
1174 | ||
1175 | /* ------------------- PRIVATE STATIC FUNCTIONS ----------------------- */ | |
1176 | ||
1177 | /* ARGSUSED */ | |
1178 | STATIC void | |
1179 | xfs_qm_list_init( | |
1180 | xfs_dqlist_t *list, | |
1181 | char *str, | |
1182 | int n) | |
1183 | { | |
794ee1ba | 1184 | mutex_init(&list->qh_lock); |
e6a81f13 | 1185 | INIT_LIST_HEAD(&list->qh_list); |
1da177e4 LT |
1186 | list->qh_version = 0; |
1187 | list->qh_nelems = 0; | |
1188 | } | |
1189 | ||
1190 | STATIC void | |
1191 | xfs_qm_list_destroy( | |
1192 | xfs_dqlist_t *list) | |
1193 | { | |
1194 | mutex_destroy(&(list->qh_lock)); | |
1195 | } | |
1196 | ||
1da177e4 LT |
1197 | /* |
1198 | * Create an inode and return with a reference already taken, but unlocked | |
1199 | * This is how we create quota inodes | |
1200 | */ | |
1201 | STATIC int | |
1202 | xfs_qm_qino_alloc( | |
1203 | xfs_mount_t *mp, | |
1204 | xfs_inode_t **ip, | |
1205 | __int64_t sbfields, | |
1206 | uint flags) | |
1207 | { | |
1208 | xfs_trans_t *tp; | |
1209 | int error; | |
1da177e4 LT |
1210 | int committed; |
1211 | ||
061f7209 | 1212 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); |
1da177e4 LT |
1213 | if ((error = xfs_trans_reserve(tp, |
1214 | XFS_QM_QINOCREATE_SPACE_RES(mp), | |
1215 | XFS_CREATE_LOG_RES(mp), 0, | |
1216 | XFS_TRANS_PERM_LOG_RES, | |
1217 | XFS_CREATE_LOG_COUNT))) { | |
1218 | xfs_trans_cancel(tp, 0); | |
014c2544 | 1219 | return error; |
1da177e4 | 1220 | } |
1da177e4 | 1221 | |
6c77b0ea CH |
1222 | error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip, &committed); |
1223 | if (error) { | |
1da177e4 LT |
1224 | xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | |
1225 | XFS_TRANS_ABORT); | |
014c2544 | 1226 | return error; |
1da177e4 LT |
1227 | } |
1228 | ||
1da177e4 LT |
1229 | /* |
1230 | * Make the changes in the superblock, and log those too. | |
1231 | * sbfields arg may contain fields other than *QUOTINO; | |
1232 | * VERSIONNUM for example. | |
1233 | */ | |
3685c2a1 | 1234 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 1235 | if (flags & XFS_QMOPT_SBVERSION) { |
62118709 | 1236 | ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); |
1da177e4 LT |
1237 | ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
1238 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)) == | |
1239 | (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1240 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)); | |
1241 | ||
62118709 | 1242 | xfs_sb_version_addquota(&mp->m_sb); |
1da177e4 LT |
1243 | mp->m_sb.sb_uquotino = NULLFSINO; |
1244 | mp->m_sb.sb_gquotino = NULLFSINO; | |
1245 | ||
1246 | /* qflags will get updated _after_ quotacheck */ | |
1247 | mp->m_sb.sb_qflags = 0; | |
1da177e4 LT |
1248 | } |
1249 | if (flags & XFS_QMOPT_UQUOTA) | |
1250 | mp->m_sb.sb_uquotino = (*ip)->i_ino; | |
1251 | else | |
1252 | mp->m_sb.sb_gquotino = (*ip)->i_ino; | |
3685c2a1 | 1253 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
1254 | xfs_mod_sb(tp, sbfields); |
1255 | ||
1c72bf90 | 1256 | if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { |
53487786 | 1257 | xfs_alert(mp, "%s failed (error %d)!", __func__, error); |
014c2544 | 1258 | return error; |
1da177e4 | 1259 | } |
014c2544 | 1260 | return 0; |
1da177e4 LT |
1261 | } |
1262 | ||
1263 | ||
5b139738 | 1264 | STATIC void |
1da177e4 LT |
1265 | xfs_qm_reset_dqcounts( |
1266 | xfs_mount_t *mp, | |
1267 | xfs_buf_t *bp, | |
1268 | xfs_dqid_t id, | |
1269 | uint type) | |
1270 | { | |
1271 | xfs_disk_dquot_t *ddq; | |
1272 | int j; | |
1273 | ||
0b1b213f CH |
1274 | trace_xfs_reset_dqcounts(bp, _RET_IP_); |
1275 | ||
1da177e4 LT |
1276 | /* |
1277 | * Reset all counters and timers. They'll be | |
1278 | * started afresh by xfs_qm_quotacheck. | |
1279 | */ | |
1280 | #ifdef DEBUG | |
1281 | j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
1282 | do_div(j, sizeof(xfs_dqblk_t)); | |
8a7b8a89 | 1283 | ASSERT(mp->m_quotainfo->qi_dqperchunk == j); |
1da177e4 LT |
1284 | #endif |
1285 | ddq = (xfs_disk_dquot_t *)XFS_BUF_PTR(bp); | |
8a7b8a89 | 1286 | for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { |
1da177e4 LT |
1287 | /* |
1288 | * Do a sanity check, and if needed, repair the dqblk. Don't | |
1289 | * output any warnings because it's perfectly possible to | |
c41564b5 | 1290 | * find uninitialised dquot blks. See comment in xfs_qm_dqcheck. |
1da177e4 | 1291 | */ |
a0fa2b67 | 1292 | (void) xfs_qm_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR, |
1da177e4 | 1293 | "xfs_quotacheck"); |
1149d96a CH |
1294 | ddq->d_bcount = 0; |
1295 | ddq->d_icount = 0; | |
1296 | ddq->d_rtbcount = 0; | |
1297 | ddq->d_btimer = 0; | |
1298 | ddq->d_itimer = 0; | |
1299 | ddq->d_rtbtimer = 0; | |
1300 | ddq->d_bwarns = 0; | |
1301 | ddq->d_iwarns = 0; | |
1302 | ddq->d_rtbwarns = 0; | |
1da177e4 LT |
1303 | ddq = (xfs_disk_dquot_t *) ((xfs_dqblk_t *)ddq + 1); |
1304 | } | |
1da177e4 LT |
1305 | } |
1306 | ||
1307 | STATIC int | |
1308 | xfs_qm_dqiter_bufs( | |
1309 | xfs_mount_t *mp, | |
1310 | xfs_dqid_t firstid, | |
1311 | xfs_fsblock_t bno, | |
1312 | xfs_filblks_t blkcnt, | |
1313 | uint flags) | |
1314 | { | |
1315 | xfs_buf_t *bp; | |
1316 | int error; | |
1317 | int notcommitted; | |
1318 | int incr; | |
c8ad20ff | 1319 | int type; |
1da177e4 LT |
1320 | |
1321 | ASSERT(blkcnt > 0); | |
1322 | notcommitted = 0; | |
1323 | incr = (blkcnt > XFS_QM_MAX_DQCLUSTER_LOGSZ) ? | |
1324 | XFS_QM_MAX_DQCLUSTER_LOGSZ : blkcnt; | |
c8ad20ff NS |
1325 | type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : |
1326 | (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); | |
1da177e4 LT |
1327 | error = 0; |
1328 | ||
1329 | /* | |
1330 | * Blkcnt arg can be a very big number, and might even be | |
1331 | * larger than the log itself. So, we have to break it up into | |
1332 | * manageable-sized transactions. | |
1333 | * Note that we don't start a permanent transaction here; we might | |
1334 | * not be able to get a log reservation for the whole thing up front, | |
1335 | * and we don't really care to either, because we just discard | |
1336 | * everything if we were to crash in the middle of this loop. | |
1337 | */ | |
1338 | while (blkcnt--) { | |
1339 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1340 | XFS_FSB_TO_DADDR(mp, bno), | |
8a7b8a89 | 1341 | mp->m_quotainfo->qi_dqchunklen, 0, &bp); |
1da177e4 LT |
1342 | if (error) |
1343 | break; | |
1344 | ||
5b139738 | 1345 | xfs_qm_reset_dqcounts(mp, bp, firstid, type); |
1da177e4 LT |
1346 | xfs_bdwrite(mp, bp); |
1347 | /* | |
1348 | * goto the next block. | |
1349 | */ | |
1350 | bno++; | |
8a7b8a89 | 1351 | firstid += mp->m_quotainfo->qi_dqperchunk; |
1da177e4 | 1352 | } |
014c2544 | 1353 | return error; |
1da177e4 LT |
1354 | } |
1355 | ||
1356 | /* | |
c8ad20ff | 1357 | * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a |
1da177e4 LT |
1358 | * caller supplied function for every chunk of dquots that we find. |
1359 | */ | |
1360 | STATIC int | |
1361 | xfs_qm_dqiterate( | |
1362 | xfs_mount_t *mp, | |
1363 | xfs_inode_t *qip, | |
1364 | uint flags) | |
1365 | { | |
1366 | xfs_bmbt_irec_t *map; | |
1367 | int i, nmaps; /* number of map entries */ | |
1368 | int error; /* return value */ | |
1369 | xfs_fileoff_t lblkno; | |
1370 | xfs_filblks_t maxlblkcnt; | |
1371 | xfs_dqid_t firstid; | |
1372 | xfs_fsblock_t rablkno; | |
1373 | xfs_filblks_t rablkcnt; | |
1374 | ||
1375 | error = 0; | |
1376 | /* | |
c41564b5 | 1377 | * This looks racy, but we can't keep an inode lock across a |
1da177e4 LT |
1378 | * trans_reserve. But, this gets called during quotacheck, and that |
1379 | * happens only at mount time which is single threaded. | |
1380 | */ | |
1381 | if (qip->i_d.di_nblocks == 0) | |
014c2544 | 1382 | return 0; |
1da177e4 LT |
1383 | |
1384 | map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); | |
1385 | ||
1386 | lblkno = 0; | |
1387 | maxlblkcnt = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp)); | |
1388 | do { | |
1389 | nmaps = XFS_DQITER_MAP_SIZE; | |
1390 | /* | |
1391 | * We aren't changing the inode itself. Just changing | |
1392 | * some of its data. No new blocks are added here, and | |
1393 | * the inode is never added to the transaction. | |
1394 | */ | |
1395 | xfs_ilock(qip, XFS_ILOCK_SHARED); | |
1396 | error = xfs_bmapi(NULL, qip, lblkno, | |
1397 | maxlblkcnt - lblkno, | |
1398 | XFS_BMAPI_METADATA, | |
1399 | NULL, | |
b4e9181e | 1400 | 0, map, &nmaps, NULL); |
1da177e4 LT |
1401 | xfs_iunlock(qip, XFS_ILOCK_SHARED); |
1402 | if (error) | |
1403 | break; | |
1404 | ||
1405 | ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); | |
1406 | for (i = 0; i < nmaps; i++) { | |
1407 | ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); | |
1408 | ASSERT(map[i].br_blockcount); | |
1409 | ||
1410 | ||
1411 | lblkno += map[i].br_blockcount; | |
1412 | ||
1413 | if (map[i].br_startblock == HOLESTARTBLOCK) | |
1414 | continue; | |
1415 | ||
1416 | firstid = (xfs_dqid_t) map[i].br_startoff * | |
8a7b8a89 | 1417 | mp->m_quotainfo->qi_dqperchunk; |
1da177e4 LT |
1418 | /* |
1419 | * Do a read-ahead on the next extent. | |
1420 | */ | |
1421 | if ((i+1 < nmaps) && | |
1422 | (map[i+1].br_startblock != HOLESTARTBLOCK)) { | |
1423 | rablkcnt = map[i+1].br_blockcount; | |
1424 | rablkno = map[i+1].br_startblock; | |
1425 | while (rablkcnt--) { | |
1a1a3e97 | 1426 | xfs_buf_readahead(mp->m_ddev_targp, |
1da177e4 | 1427 | XFS_FSB_TO_DADDR(mp, rablkno), |
8a7b8a89 | 1428 | mp->m_quotainfo->qi_dqchunklen); |
1da177e4 LT |
1429 | rablkno++; |
1430 | } | |
1431 | } | |
1432 | /* | |
1433 | * Iterate thru all the blks in the extent and | |
1434 | * reset the counters of all the dquots inside them. | |
1435 | */ | |
1436 | if ((error = xfs_qm_dqiter_bufs(mp, | |
1437 | firstid, | |
1438 | map[i].br_startblock, | |
1439 | map[i].br_blockcount, | |
1440 | flags))) { | |
1441 | break; | |
1442 | } | |
1443 | } | |
1444 | ||
1445 | if (error) | |
1446 | break; | |
1447 | } while (nmaps > 0); | |
1448 | ||
f0e2d93c | 1449 | kmem_free(map); |
1da177e4 | 1450 | |
014c2544 | 1451 | return error; |
1da177e4 LT |
1452 | } |
1453 | ||
1454 | /* | |
1455 | * Called by dqusage_adjust in doing a quotacheck. | |
52fda114 CH |
1456 | * |
1457 | * Given the inode, and a dquot id this updates both the incore dqout as well | |
1458 | * as the buffer copy. This is so that once the quotacheck is done, we can | |
1459 | * just log all the buffers, as opposed to logging numerous updates to | |
1460 | * individual dquots. | |
1da177e4 | 1461 | */ |
52fda114 | 1462 | STATIC int |
1da177e4 | 1463 | xfs_qm_quotacheck_dqadjust( |
52fda114 CH |
1464 | struct xfs_inode *ip, |
1465 | xfs_dqid_t id, | |
1466 | uint type, | |
1da177e4 LT |
1467 | xfs_qcnt_t nblks, |
1468 | xfs_qcnt_t rtblks) | |
1469 | { | |
52fda114 CH |
1470 | struct xfs_mount *mp = ip->i_mount; |
1471 | struct xfs_dquot *dqp; | |
1472 | int error; | |
1473 | ||
1474 | error = xfs_qm_dqget(mp, ip, id, type, | |
1475 | XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp); | |
1476 | if (error) { | |
1477 | /* | |
1478 | * Shouldn't be able to turn off quotas here. | |
1479 | */ | |
1480 | ASSERT(error != ESRCH); | |
1481 | ASSERT(error != ENOENT); | |
1482 | return error; | |
1483 | } | |
0b1b213f CH |
1484 | |
1485 | trace_xfs_dqadjust(dqp); | |
1486 | ||
1da177e4 LT |
1487 | /* |
1488 | * Adjust the inode count and the block count to reflect this inode's | |
1489 | * resource usage. | |
1490 | */ | |
413d57c9 | 1491 | be64_add_cpu(&dqp->q_core.d_icount, 1); |
1da177e4 LT |
1492 | dqp->q_res_icount++; |
1493 | if (nblks) { | |
413d57c9 | 1494 | be64_add_cpu(&dqp->q_core.d_bcount, nblks); |
1da177e4 LT |
1495 | dqp->q_res_bcount += nblks; |
1496 | } | |
1497 | if (rtblks) { | |
413d57c9 | 1498 | be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); |
1da177e4 LT |
1499 | dqp->q_res_rtbcount += rtblks; |
1500 | } | |
1501 | ||
1502 | /* | |
1503 | * Set default limits, adjust timers (since we changed usages) | |
191f8488 CH |
1504 | * |
1505 | * There are no timers for the default values set in the root dquot. | |
1da177e4 | 1506 | */ |
191f8488 | 1507 | if (dqp->q_core.d_id) { |
52fda114 CH |
1508 | xfs_qm_adjust_dqlimits(mp, &dqp->q_core); |
1509 | xfs_qm_adjust_dqtimers(mp, &dqp->q_core); | |
1da177e4 LT |
1510 | } |
1511 | ||
1512 | dqp->dq_flags |= XFS_DQ_DIRTY; | |
52fda114 CH |
1513 | xfs_qm_dqput(dqp); |
1514 | return 0; | |
1da177e4 LT |
1515 | } |
1516 | ||
1517 | STATIC int | |
1518 | xfs_qm_get_rtblks( | |
1519 | xfs_inode_t *ip, | |
1520 | xfs_qcnt_t *O_rtblks) | |
1521 | { | |
1522 | xfs_filblks_t rtblks; /* total rt blks */ | |
4eea22f0 | 1523 | xfs_extnum_t idx; /* extent record index */ |
1da177e4 LT |
1524 | xfs_ifork_t *ifp; /* inode fork pointer */ |
1525 | xfs_extnum_t nextents; /* number of extent entries */ | |
1da177e4 LT |
1526 | int error; |
1527 | ||
1528 | ASSERT(XFS_IS_REALTIME_INODE(ip)); | |
1529 | ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); | |
1530 | if (!(ifp->if_flags & XFS_IFEXTENTS)) { | |
1531 | if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) | |
014c2544 | 1532 | return error; |
1da177e4 LT |
1533 | } |
1534 | rtblks = 0; | |
4eea22f0 | 1535 | nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); |
a6f64d4a CH |
1536 | for (idx = 0; idx < nextents; idx++) |
1537 | rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); | |
1da177e4 | 1538 | *O_rtblks = (xfs_qcnt_t)rtblks; |
014c2544 | 1539 | return 0; |
1da177e4 LT |
1540 | } |
1541 | ||
1542 | /* | |
1543 | * callback routine supplied to bulkstat(). Given an inumber, find its | |
1544 | * dquots and update them to account for resources taken by that inode. | |
1545 | */ | |
1546 | /* ARGSUSED */ | |
1547 | STATIC int | |
1548 | xfs_qm_dqusage_adjust( | |
1549 | xfs_mount_t *mp, /* mount point for filesystem */ | |
1550 | xfs_ino_t ino, /* inode number to get data for */ | |
1551 | void __user *buffer, /* not used */ | |
1552 | int ubsize, /* not used */ | |
1da177e4 | 1553 | int *ubused, /* not used */ |
1da177e4 LT |
1554 | int *res) /* result code value */ |
1555 | { | |
1556 | xfs_inode_t *ip; | |
52fda114 | 1557 | xfs_qcnt_t nblks, rtblks = 0; |
1da177e4 LT |
1558 | int error; |
1559 | ||
1560 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
1561 | ||
1562 | /* | |
1563 | * rootino must have its resources accounted for, not so with the quota | |
1564 | * inodes. | |
1565 | */ | |
1566 | if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) { | |
1567 | *res = BULKSTAT_RV_NOTHING; | |
1568 | return XFS_ERROR(EINVAL); | |
1569 | } | |
1570 | ||
1571 | /* | |
1572 | * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget | |
1573 | * interface expects the inode to be exclusively locked because that's | |
1574 | * the case in all other instances. It's OK that we do this because | |
1575 | * quotacheck is done only at mount time. | |
1576 | */ | |
52fda114 CH |
1577 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip); |
1578 | if (error) { | |
1da177e4 | 1579 | *res = BULKSTAT_RV_NOTHING; |
014c2544 | 1580 | return error; |
1da177e4 LT |
1581 | } |
1582 | ||
52fda114 | 1583 | ASSERT(ip->i_delayed_blks == 0); |
1da177e4 | 1584 | |
52fda114 | 1585 | if (XFS_IS_REALTIME_INODE(ip)) { |
1da177e4 LT |
1586 | /* |
1587 | * Walk thru the extent list and count the realtime blocks. | |
1588 | */ | |
52fda114 CH |
1589 | error = xfs_qm_get_rtblks(ip, &rtblks); |
1590 | if (error) | |
1591 | goto error0; | |
1da177e4 | 1592 | } |
1da177e4 | 1593 | |
52fda114 | 1594 | nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; |
1da177e4 LT |
1595 | |
1596 | /* | |
1597 | * Add the (disk blocks and inode) resources occupied by this | |
1598 | * inode to its dquots. We do this adjustment in the incore dquot, | |
1599 | * and also copy the changes to its buffer. | |
1600 | * We don't care about putting these changes in a transaction | |
1601 | * envelope because if we crash in the middle of a 'quotacheck' | |
1602 | * we have to start from the beginning anyway. | |
1603 | * Once we're done, we'll log all the dquot bufs. | |
1604 | * | |
c41564b5 | 1605 | * The *QUOTA_ON checks below may look pretty racy, but quotachecks |
1da177e4 LT |
1606 | * and quotaoffs don't race. (Quotachecks happen at mount time only). |
1607 | */ | |
1608 | if (XFS_IS_UQUOTA_ON(mp)) { | |
52fda114 CH |
1609 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid, |
1610 | XFS_DQ_USER, nblks, rtblks); | |
1611 | if (error) | |
1612 | goto error0; | |
1da177e4 | 1613 | } |
52fda114 CH |
1614 | |
1615 | if (XFS_IS_GQUOTA_ON(mp)) { | |
1616 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid, | |
1617 | XFS_DQ_GROUP, nblks, rtblks); | |
1618 | if (error) | |
1619 | goto error0; | |
1da177e4 | 1620 | } |
1da177e4 | 1621 | |
52fda114 | 1622 | if (XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 1623 | error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip), |
52fda114 CH |
1624 | XFS_DQ_PROJ, nblks, rtblks); |
1625 | if (error) | |
1626 | goto error0; | |
1627 | } | |
1628 | ||
1629 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1630 | IRELE(ip); | |
1da177e4 | 1631 | *res = BULKSTAT_RV_DIDONE; |
014c2544 | 1632 | return 0; |
52fda114 CH |
1633 | |
1634 | error0: | |
1635 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1636 | IRELE(ip); | |
1637 | *res = BULKSTAT_RV_GIVEUP; | |
1638 | return error; | |
1da177e4 LT |
1639 | } |
1640 | ||
1641 | /* | |
1642 | * Walk thru all the filesystem inodes and construct a consistent view | |
1643 | * of the disk quota world. If the quotacheck fails, disable quotas. | |
1644 | */ | |
1645 | int | |
1646 | xfs_qm_quotacheck( | |
1647 | xfs_mount_t *mp) | |
1648 | { | |
1649 | int done, count, error; | |
1650 | xfs_ino_t lastino; | |
1651 | size_t structsz; | |
1652 | xfs_inode_t *uip, *gip; | |
1653 | uint flags; | |
1654 | ||
1655 | count = INT_MAX; | |
1656 | structsz = 1; | |
1657 | lastino = 0; | |
1658 | flags = 0; | |
1659 | ||
8a7b8a89 | 1660 | ASSERT(mp->m_quotainfo->qi_uquotaip || mp->m_quotainfo->qi_gquotaip); |
1da177e4 LT |
1661 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1662 | ||
1663 | /* | |
1664 | * There should be no cached dquots. The (simplistic) quotacheck | |
1665 | * algorithm doesn't like that. | |
1666 | */ | |
3a25404b | 1667 | ASSERT(list_empty(&mp->m_quotainfo->qi_dqlist)); |
1da177e4 | 1668 | |
0b932ccc | 1669 | xfs_notice(mp, "Quotacheck needed: Please wait."); |
1da177e4 LT |
1670 | |
1671 | /* | |
c8ad20ff | 1672 | * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset |
1da177e4 LT |
1673 | * their counters to zero. We need a clean slate. |
1674 | * We don't log our changes till later. | |
1675 | */ | |
8a7b8a89 CH |
1676 | uip = mp->m_quotainfo->qi_uquotaip; |
1677 | if (uip) { | |
1678 | error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA); | |
1679 | if (error) | |
1da177e4 LT |
1680 | goto error_return; |
1681 | flags |= XFS_UQUOTA_CHKD; | |
1682 | } | |
1683 | ||
8a7b8a89 CH |
1684 | gip = mp->m_quotainfo->qi_gquotaip; |
1685 | if (gip) { | |
1686 | error = xfs_qm_dqiterate(mp, gip, XFS_IS_GQUOTA_ON(mp) ? | |
1687 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1688 | if (error) | |
1da177e4 | 1689 | goto error_return; |
c8ad20ff | 1690 | flags |= XFS_OQUOTA_CHKD; |
1da177e4 LT |
1691 | } |
1692 | ||
1693 | do { | |
1694 | /* | |
1695 | * Iterate thru all the inodes in the file system, | |
1696 | * adjusting the corresponding dquot counters in core. | |
1697 | */ | |
7dce11db CH |
1698 | error = xfs_bulkstat(mp, &lastino, &count, |
1699 | xfs_qm_dqusage_adjust, | |
1700 | structsz, NULL, &done); | |
1701 | if (error) | |
1da177e4 LT |
1702 | break; |
1703 | ||
7dce11db | 1704 | } while (!done); |
1da177e4 | 1705 | |
4b8879df DC |
1706 | /* |
1707 | * We've made all the changes that we need to make incore. | |
1708 | * Flush them down to disk buffers if everything was updated | |
1709 | * successfully. | |
1710 | */ | |
1711 | if (!error) | |
20026d92 | 1712 | error = xfs_qm_dqflush_all(mp, 0); |
4b8879df | 1713 | |
1da177e4 LT |
1714 | /* |
1715 | * We can get this error if we couldn't do a dquot allocation inside | |
1716 | * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the | |
1717 | * dirty dquots that might be cached, we just want to get rid of them | |
1718 | * and turn quotaoff. The dquots won't be attached to any of the inodes | |
1719 | * at this point (because we intentionally didn't in dqget_noattach). | |
1720 | */ | |
1721 | if (error) { | |
8112e9dc | 1722 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 LT |
1723 | goto error_return; |
1724 | } | |
1da177e4 LT |
1725 | |
1726 | /* | |
1727 | * We didn't log anything, because if we crashed, we'll have to | |
1728 | * start the quotacheck from scratch anyway. However, we must make | |
1729 | * sure that our dquot changes are secure before we put the | |
1730 | * quotacheck'd stamp on the superblock. So, here we do a synchronous | |
1731 | * flush. | |
1732 | */ | |
1733 | XFS_bflush(mp->m_ddev_targp); | |
1734 | ||
1735 | /* | |
1736 | * If one type of quotas is off, then it will lose its | |
1737 | * quotachecked status, since we won't be doing accounting for | |
1738 | * that type anymore. | |
1739 | */ | |
c8ad20ff | 1740 | mp->m_qflags &= ~(XFS_OQUOTA_CHKD | XFS_UQUOTA_CHKD); |
1da177e4 LT |
1741 | mp->m_qflags |= flags; |
1742 | ||
3a25404b | 1743 | xfs_qm_dquot_list_print(mp); |
1da177e4 LT |
1744 | |
1745 | error_return: | |
1746 | if (error) { | |
0b932ccc DC |
1747 | xfs_warn(mp, |
1748 | "Quotacheck: Unsuccessful (Error %d): Disabling quotas.", | |
1749 | error); | |
1da177e4 LT |
1750 | /* |
1751 | * We must turn off quotas. | |
1752 | */ | |
1753 | ASSERT(mp->m_quotainfo != NULL); | |
1754 | ASSERT(xfs_Gqm != NULL); | |
1755 | xfs_qm_destroy_quotainfo(mp); | |
31d5577b | 1756 | if (xfs_mount_reset_sbqflags(mp)) { |
0b932ccc DC |
1757 | xfs_warn(mp, |
1758 | "Quotacheck: Failed to reset quota flags."); | |
31d5577b | 1759 | } |
0b932ccc DC |
1760 | } else |
1761 | xfs_notice(mp, "Quotacheck: Done."); | |
1da177e4 LT |
1762 | return (error); |
1763 | } | |
1764 | ||
1765 | /* | |
1766 | * This is called after the superblock has been read in and we're ready to | |
1767 | * iget the quota inodes. | |
1768 | */ | |
1769 | STATIC int | |
1770 | xfs_qm_init_quotainos( | |
1771 | xfs_mount_t *mp) | |
1772 | { | |
1773 | xfs_inode_t *uip, *gip; | |
1774 | int error; | |
1775 | __int64_t sbflags; | |
1776 | uint flags; | |
1777 | ||
1778 | ASSERT(mp->m_quotainfo); | |
1779 | uip = gip = NULL; | |
1780 | sbflags = 0; | |
1781 | flags = 0; | |
1782 | ||
1783 | /* | |
1784 | * Get the uquota and gquota inodes | |
1785 | */ | |
62118709 | 1786 | if (xfs_sb_version_hasquota(&mp->m_sb)) { |
1da177e4 LT |
1787 | if (XFS_IS_UQUOTA_ON(mp) && |
1788 | mp->m_sb.sb_uquotino != NULLFSINO) { | |
1789 | ASSERT(mp->m_sb.sb_uquotino > 0); | |
1790 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, | |
7b6259e7 | 1791 | 0, 0, &uip))) |
1da177e4 LT |
1792 | return XFS_ERROR(error); |
1793 | } | |
c8ad20ff | 1794 | if (XFS_IS_OQUOTA_ON(mp) && |
1da177e4 LT |
1795 | mp->m_sb.sb_gquotino != NULLFSINO) { |
1796 | ASSERT(mp->m_sb.sb_gquotino > 0); | |
1797 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, | |
7b6259e7 | 1798 | 0, 0, &gip))) { |
1da177e4 | 1799 | if (uip) |
43355099 | 1800 | IRELE(uip); |
1da177e4 LT |
1801 | return XFS_ERROR(error); |
1802 | } | |
1803 | } | |
1804 | } else { | |
1805 | flags |= XFS_QMOPT_SBVERSION; | |
1806 | sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1807 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS); | |
1808 | } | |
1809 | ||
1810 | /* | |
1811 | * Create the two inodes, if they don't exist already. The changes | |
1812 | * made above will get added to a transaction and logged in one of | |
1813 | * the qino_alloc calls below. If the device is readonly, | |
1814 | * temporarily switch to read-write to do this. | |
1815 | */ | |
1816 | if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { | |
1817 | if ((error = xfs_qm_qino_alloc(mp, &uip, | |
1818 | sbflags | XFS_SB_UQUOTINO, | |
1819 | flags | XFS_QMOPT_UQUOTA))) | |
1820 | return XFS_ERROR(error); | |
1821 | ||
1822 | flags &= ~XFS_QMOPT_SBVERSION; | |
1823 | } | |
c8ad20ff NS |
1824 | if (XFS_IS_OQUOTA_ON(mp) && gip == NULL) { |
1825 | flags |= (XFS_IS_GQUOTA_ON(mp) ? | |
1826 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1827 | error = xfs_qm_qino_alloc(mp, &gip, | |
1828 | sbflags | XFS_SB_GQUOTINO, flags); | |
1829 | if (error) { | |
1da177e4 | 1830 | if (uip) |
43355099 | 1831 | IRELE(uip); |
1da177e4 LT |
1832 | |
1833 | return XFS_ERROR(error); | |
1834 | } | |
1835 | } | |
1836 | ||
8a7b8a89 CH |
1837 | mp->m_quotainfo->qi_uquotaip = uip; |
1838 | mp->m_quotainfo->qi_gquotaip = gip; | |
1da177e4 | 1839 | |
014c2544 | 1840 | return 0; |
1da177e4 LT |
1841 | } |
1842 | ||
1843 | ||
368e1361 | 1844 | |
1da177e4 | 1845 | /* |
368e1361 DC |
1846 | * Just pop the least recently used dquot off the freelist and |
1847 | * recycle it. The returned dquot is locked. | |
1da177e4 | 1848 | */ |
368e1361 DC |
1849 | STATIC xfs_dquot_t * |
1850 | xfs_qm_dqreclaim_one(void) | |
1da177e4 | 1851 | { |
368e1361 DC |
1852 | xfs_dquot_t *dqpout; |
1853 | xfs_dquot_t *dqp; | |
1da177e4 | 1854 | int restarts; |
0fbca4d1 | 1855 | int startagain; |
1da177e4 | 1856 | |
1da177e4 | 1857 | restarts = 0; |
368e1361 | 1858 | dqpout = NULL; |
1da177e4 | 1859 | |
368e1361 | 1860 | /* lockorder: hashchainlock, freelistlock, mplistlock, dqlock, dqflock */ |
0fbca4d1 DC |
1861 | again: |
1862 | startagain = 0; | |
3a8406f6 | 1863 | mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 | 1864 | |
3a8406f6 | 1865 | list_for_each_entry(dqp, &xfs_Gqm->qm_dqfrlist, q_freelist) { |
3a25404b | 1866 | struct xfs_mount *mp = dqp->q_mount; |
1da177e4 LT |
1867 | xfs_dqlock(dqp); |
1868 | ||
1869 | /* | |
1870 | * We are racing with dqlookup here. Naturally we don't | |
368e1361 DC |
1871 | * want to reclaim a dquot that lookup wants. We release the |
1872 | * freelist lock and start over, so that lookup will grab | |
1873 | * both the dquot and the freelistlock. | |
1da177e4 LT |
1874 | */ |
1875 | if (dqp->dq_flags & XFS_DQ_WANT) { | |
368e1361 DC |
1876 | ASSERT(! (dqp->dq_flags & XFS_DQ_INACTIVE)); |
1877 | ||
1878 | trace_xfs_dqreclaim_want(dqp); | |
1da177e4 | 1879 | XQM_STATS_INC(xqmstats.xs_qm_dqwants); |
0fbca4d1 DC |
1880 | restarts++; |
1881 | startagain = 1; | |
1882 | goto dqunlock; | |
1da177e4 LT |
1883 | } |
1884 | ||
1885 | /* | |
1886 | * If the dquot is inactive, we are assured that it is | |
1887 | * not on the mplist or the hashlist, and that makes our | |
1888 | * life easier. | |
1889 | */ | |
1890 | if (dqp->dq_flags & XFS_DQ_INACTIVE) { | |
3a25404b | 1891 | ASSERT(mp == NULL); |
1da177e4 | 1892 | ASSERT(! XFS_DQ_IS_DIRTY(dqp)); |
e6a81f13 | 1893 | ASSERT(list_empty(&dqp->q_hashlist)); |
3a25404b | 1894 | ASSERT(list_empty(&dqp->q_mplist)); |
3a8406f6 DC |
1895 | list_del_init(&dqp->q_freelist); |
1896 | xfs_Gqm->qm_dqfrlist_cnt--; | |
368e1361 | 1897 | dqpout = dqp; |
1da177e4 | 1898 | XQM_STATS_INC(xqmstats.xs_qm_dqinact_reclaims); |
0fbca4d1 | 1899 | goto dqunlock; |
1da177e4 LT |
1900 | } |
1901 | ||
368e1361 | 1902 | ASSERT(dqp->q_hash); |
3a25404b | 1903 | ASSERT(!list_empty(&dqp->q_mplist)); |
368e1361 | 1904 | |
1da177e4 | 1905 | /* |
0fbca4d1 DC |
1906 | * Try to grab the flush lock. If this dquot is in the process |
1907 | * of getting flushed to disk, we don't want to reclaim it. | |
1da177e4 | 1908 | */ |
0fbca4d1 DC |
1909 | if (!xfs_dqflock_nowait(dqp)) |
1910 | goto dqunlock; | |
1da177e4 LT |
1911 | |
1912 | /* | |
1913 | * We have the flush lock so we know that this is not in the | |
1914 | * process of being flushed. So, if this is dirty, flush it | |
1915 | * DELWRI so that we don't get a freelist infested with | |
1916 | * dirty dquots. | |
1917 | */ | |
1918 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
3c56836f | 1919 | int error; |
0b1b213f | 1920 | |
368e1361 | 1921 | trace_xfs_dqreclaim_dirty(dqp); |
0b1b213f | 1922 | |
1da177e4 LT |
1923 | /* |
1924 | * We flush it delayed write, so don't bother | |
368e1361 | 1925 | * releasing the freelist lock. |
1da177e4 | 1926 | */ |
20026d92 | 1927 | error = xfs_qm_dqflush(dqp, 0); |
3c56836f | 1928 | if (error) { |
53487786 DC |
1929 | xfs_warn(mp, "%s: dquot %p flush failed", |
1930 | __func__, dqp); | |
3c56836f | 1931 | } |
0fbca4d1 | 1932 | goto dqunlock; |
1da177e4 | 1933 | } |
368e1361 | 1934 | |
1da177e4 LT |
1935 | /* |
1936 | * We're trying to get the hashlock out of order. This races | |
1937 | * with dqlookup; so, we giveup and goto the next dquot if | |
1938 | * we couldn't get the hashlock. This way, we won't starve | |
1939 | * a dqlookup process that holds the hashlock that is | |
1940 | * waiting for the freelist lock. | |
1941 | */ | |
c9a192dc | 1942 | if (!mutex_trylock(&dqp->q_hash->qh_lock)) { |
368e1361 DC |
1943 | restarts++; |
1944 | goto dqfunlock; | |
1da177e4 | 1945 | } |
368e1361 | 1946 | |
1da177e4 LT |
1947 | /* |
1948 | * This races with dquot allocation code as well as dqflush_all | |
1949 | * and reclaim code. So, if we failed to grab the mplist lock, | |
1950 | * giveup everything and start over. | |
1951 | */ | |
3a25404b | 1952 | if (!mutex_trylock(&mp->m_quotainfo->qi_dqlist_lock)) { |
368e1361 | 1953 | restarts++; |
0fbca4d1 DC |
1954 | startagain = 1; |
1955 | goto qhunlock; | |
1da177e4 | 1956 | } |
0b1b213f | 1957 | |
1da177e4 | 1958 | ASSERT(dqp->q_nrefs == 0); |
3a25404b DC |
1959 | list_del_init(&dqp->q_mplist); |
1960 | mp->m_quotainfo->qi_dquots--; | |
1961 | mp->m_quotainfo->qi_dqreclaims++; | |
e6a81f13 DC |
1962 | list_del_init(&dqp->q_hashlist); |
1963 | dqp->q_hash->qh_version++; | |
3a8406f6 DC |
1964 | list_del_init(&dqp->q_freelist); |
1965 | xfs_Gqm->qm_dqfrlist_cnt--; | |
368e1361 DC |
1966 | dqpout = dqp; |
1967 | mutex_unlock(&mp->m_quotainfo->qi_dqlist_lock); | |
0fbca4d1 | 1968 | qhunlock: |
368e1361 DC |
1969 | mutex_unlock(&dqp->q_hash->qh_lock); |
1970 | dqfunlock: | |
1971 | xfs_dqfunlock(dqp); | |
0fbca4d1 | 1972 | dqunlock: |
1da177e4 | 1973 | xfs_dqunlock(dqp); |
368e1361 DC |
1974 | if (dqpout) |
1975 | break; | |
1976 | if (restarts >= XFS_QM_RECLAIM_MAX_RESTARTS) | |
0fbca4d1 DC |
1977 | break; |
1978 | if (startagain) { | |
1979 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); | |
1980 | goto again; | |
1981 | } | |
1da177e4 | 1982 | } |
3a8406f6 | 1983 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
368e1361 | 1984 | return dqpout; |
1da177e4 LT |
1985 | } |
1986 | ||
368e1361 DC |
1987 | /* |
1988 | * Traverse the freelist of dquots and attempt to reclaim a maximum of | |
1989 | * 'howmany' dquots. This operation races with dqlookup(), and attempts to | |
1990 | * favor the lookup function ... | |
1991 | */ | |
1992 | STATIC int | |
1993 | xfs_qm_shake_freelist( | |
1994 | int howmany) | |
1995 | { | |
1996 | int nreclaimed = 0; | |
1997 | xfs_dquot_t *dqp; | |
1998 | ||
1999 | if (howmany <= 0) | |
2000 | return 0; | |
2001 | ||
2002 | while (nreclaimed < howmany) { | |
2003 | dqp = xfs_qm_dqreclaim_one(); | |
2004 | if (!dqp) | |
2005 | return nreclaimed; | |
2006 | xfs_qm_dqdestroy(dqp); | |
2007 | nreclaimed++; | |
2008 | } | |
2009 | return nreclaimed; | |
2010 | } | |
1da177e4 LT |
2011 | |
2012 | /* | |
2013 | * The kmem_shake interface is invoked when memory is running low. | |
2014 | */ | |
2015 | /* ARGSUSED */ | |
2016 | STATIC int | |
7f8275d0 DC |
2017 | xfs_qm_shake( |
2018 | struct shrinker *shrink, | |
2019 | int nr_to_scan, | |
2020 | gfp_t gfp_mask) | |
1da177e4 LT |
2021 | { |
2022 | int ndqused, nfree, n; | |
2023 | ||
2024 | if (!kmem_shake_allow(gfp_mask)) | |
014c2544 | 2025 | return 0; |
1da177e4 | 2026 | if (!xfs_Gqm) |
014c2544 | 2027 | return 0; |
1da177e4 | 2028 | |
3a8406f6 | 2029 | nfree = xfs_Gqm->qm_dqfrlist_cnt; /* free dquots */ |
1da177e4 LT |
2030 | /* incore dquots in all f/s's */ |
2031 | ndqused = atomic_read(&xfs_Gqm->qm_totaldquots) - nfree; | |
2032 | ||
2033 | ASSERT(ndqused >= 0); | |
2034 | ||
2035 | if (nfree <= ndqused && nfree < ndquot) | |
014c2544 | 2036 | return 0; |
1da177e4 LT |
2037 | |
2038 | ndqused *= xfs_Gqm->qm_dqfree_ratio; /* target # of free dquots */ | |
2039 | n = nfree - ndqused - ndquot; /* # over target */ | |
2040 | ||
2041 | return xfs_qm_shake_freelist(MAX(nfree, n)); | |
2042 | } | |
2043 | ||
2044 | ||
1da177e4 LT |
2045 | /*------------------------------------------------------------------*/ |
2046 | ||
2047 | /* | |
2048 | * Return a new incore dquot. Depending on the number of | |
2049 | * dquots in the system, we either allocate a new one on the kernel heap, | |
2050 | * or reclaim a free one. | |
2051 | * Return value is B_TRUE if we allocated a new dquot, B_FALSE if we managed | |
2052 | * to reclaim an existing one from the freelist. | |
2053 | */ | |
2054 | boolean_t | |
2055 | xfs_qm_dqalloc_incore( | |
2056 | xfs_dquot_t **O_dqpp) | |
2057 | { | |
2058 | xfs_dquot_t *dqp; | |
2059 | ||
2060 | /* | |
2061 | * Check against high water mark to see if we want to pop | |
2062 | * a nincompoop dquot off the freelist. | |
2063 | */ | |
2064 | if (atomic_read(&xfs_Gqm->qm_totaldquots) >= ndquot) { | |
2065 | /* | |
2066 | * Try to recycle a dquot from the freelist. | |
2067 | */ | |
2068 | if ((dqp = xfs_qm_dqreclaim_one())) { | |
2069 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaims); | |
2070 | /* | |
2071 | * Just zero the core here. The rest will get | |
2072 | * reinitialized by caller. XXX we shouldn't even | |
2073 | * do this zero ... | |
2074 | */ | |
2075 | memset(&dqp->q_core, 0, sizeof(dqp->q_core)); | |
2076 | *O_dqpp = dqp; | |
014c2544 | 2077 | return B_FALSE; |
1da177e4 LT |
2078 | } |
2079 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaim_misses); | |
2080 | } | |
2081 | ||
2082 | /* | |
2083 | * Allocate a brand new dquot on the kernel heap and return it | |
2084 | * to the caller to initialize. | |
2085 | */ | |
2086 | ASSERT(xfs_Gqm->qm_dqzone != NULL); | |
2087 | *O_dqpp = kmem_zone_zalloc(xfs_Gqm->qm_dqzone, KM_SLEEP); | |
2088 | atomic_inc(&xfs_Gqm->qm_totaldquots); | |
2089 | ||
014c2544 | 2090 | return B_TRUE; |
1da177e4 LT |
2091 | } |
2092 | ||
2093 | ||
2094 | /* | |
2095 | * Start a transaction and write the incore superblock changes to | |
2096 | * disk. flags parameter indicates which fields have changed. | |
2097 | */ | |
2098 | int | |
2099 | xfs_qm_write_sb_changes( | |
2100 | xfs_mount_t *mp, | |
2101 | __int64_t flags) | |
2102 | { | |
2103 | xfs_trans_t *tp; | |
2104 | int error; | |
2105 | ||
2106 | #ifdef QUOTADEBUG | |
0b932ccc | 2107 | xfs_notice(mp, "Writing superblock quota changes"); |
1da177e4 LT |
2108 | #endif |
2109 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); | |
2110 | if ((error = xfs_trans_reserve(tp, 0, | |
2111 | mp->m_sb.sb_sectsize + 128, 0, | |
2112 | 0, | |
2113 | XFS_DEFAULT_LOG_COUNT))) { | |
2114 | xfs_trans_cancel(tp, 0); | |
014c2544 | 2115 | return error; |
1da177e4 LT |
2116 | } |
2117 | ||
2118 | xfs_mod_sb(tp, flags); | |
e5720eec | 2119 | error = xfs_trans_commit(tp, 0); |
1da177e4 | 2120 | |
e5720eec | 2121 | return error; |
1da177e4 LT |
2122 | } |
2123 | ||
2124 | ||
2125 | /* --------------- utility functions for vnodeops ---------------- */ | |
2126 | ||
2127 | ||
2128 | /* | |
6c77b0ea | 2129 | * Given an inode, a uid, gid and prid make sure that we have |
1da177e4 LT |
2130 | * allocated relevant dquot(s) on disk, and that we won't exceed inode |
2131 | * quotas by creating this file. | |
2132 | * This also attaches dquot(s) to the given inode after locking it, | |
2133 | * and returns the dquots corresponding to the uid and/or gid. | |
2134 | * | |
2135 | * in : inode (unlocked) | |
2136 | * out : udquot, gdquot with references taken and unlocked | |
2137 | */ | |
2138 | int | |
2139 | xfs_qm_vop_dqalloc( | |
7d095257 CH |
2140 | struct xfs_inode *ip, |
2141 | uid_t uid, | |
2142 | gid_t gid, | |
2143 | prid_t prid, | |
2144 | uint flags, | |
2145 | struct xfs_dquot **O_udqpp, | |
2146 | struct xfs_dquot **O_gdqpp) | |
1da177e4 | 2147 | { |
7d095257 CH |
2148 | struct xfs_mount *mp = ip->i_mount; |
2149 | struct xfs_dquot *uq, *gq; | |
2150 | int error; | |
2151 | uint lockflags; | |
1da177e4 | 2152 | |
7d095257 | 2153 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
1da177e4 LT |
2154 | return 0; |
2155 | ||
2156 | lockflags = XFS_ILOCK_EXCL; | |
2157 | xfs_ilock(ip, lockflags); | |
2158 | ||
bd186aa9 | 2159 | if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) |
1da177e4 LT |
2160 | gid = ip->i_d.di_gid; |
2161 | ||
2162 | /* | |
2163 | * Attach the dquot(s) to this inode, doing a dquot allocation | |
2164 | * if necessary. The dquot(s) will not be locked. | |
2165 | */ | |
2166 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
7d095257 CH |
2167 | error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); |
2168 | if (error) { | |
1da177e4 | 2169 | xfs_iunlock(ip, lockflags); |
014c2544 | 2170 | return error; |
1da177e4 LT |
2171 | } |
2172 | } | |
2173 | ||
2174 | uq = gq = NULL; | |
c8ad20ff | 2175 | if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { |
1da177e4 LT |
2176 | if (ip->i_d.di_uid != uid) { |
2177 | /* | |
2178 | * What we need is the dquot that has this uid, and | |
2179 | * if we send the inode to dqget, the uid of the inode | |
2180 | * takes priority over what's sent in the uid argument. | |
2181 | * We must unlock inode here before calling dqget if | |
2182 | * we're not sending the inode, because otherwise | |
2183 | * we'll deadlock by doing trans_reserve while | |
2184 | * holding ilock. | |
2185 | */ | |
2186 | xfs_iunlock(ip, lockflags); | |
2187 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t) uid, | |
2188 | XFS_DQ_USER, | |
2189 | XFS_QMOPT_DQALLOC | | |
2190 | XFS_QMOPT_DOWARN, | |
2191 | &uq))) { | |
2192 | ASSERT(error != ENOENT); | |
014c2544 | 2193 | return error; |
1da177e4 LT |
2194 | } |
2195 | /* | |
2196 | * Get the ilock in the right order. | |
2197 | */ | |
2198 | xfs_dqunlock(uq); | |
2199 | lockflags = XFS_ILOCK_SHARED; | |
2200 | xfs_ilock(ip, lockflags); | |
2201 | } else { | |
2202 | /* | |
2203 | * Take an extra reference, because we'll return | |
2204 | * this to caller | |
2205 | */ | |
2206 | ASSERT(ip->i_udquot); | |
2207 | uq = ip->i_udquot; | |
2208 | xfs_dqlock(uq); | |
2209 | XFS_DQHOLD(uq); | |
2210 | xfs_dqunlock(uq); | |
2211 | } | |
2212 | } | |
c8ad20ff | 2213 | if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { |
1da177e4 LT |
2214 | if (ip->i_d.di_gid != gid) { |
2215 | xfs_iunlock(ip, lockflags); | |
2216 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)gid, | |
2217 | XFS_DQ_GROUP, | |
2218 | XFS_QMOPT_DQALLOC | | |
2219 | XFS_QMOPT_DOWARN, | |
2220 | &gq))) { | |
2221 | if (uq) | |
2222 | xfs_qm_dqrele(uq); | |
2223 | ASSERT(error != ENOENT); | |
014c2544 | 2224 | return error; |
1da177e4 LT |
2225 | } |
2226 | xfs_dqunlock(gq); | |
2227 | lockflags = XFS_ILOCK_SHARED; | |
2228 | xfs_ilock(ip, lockflags); | |
2229 | } else { | |
2230 | ASSERT(ip->i_gdquot); | |
2231 | gq = ip->i_gdquot; | |
2232 | xfs_dqlock(gq); | |
2233 | XFS_DQHOLD(gq); | |
2234 | xfs_dqunlock(gq); | |
2235 | } | |
c8ad20ff | 2236 | } else if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 2237 | if (xfs_get_projid(ip) != prid) { |
c8ad20ff NS |
2238 | xfs_iunlock(ip, lockflags); |
2239 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, | |
2240 | XFS_DQ_PROJ, | |
2241 | XFS_QMOPT_DQALLOC | | |
2242 | XFS_QMOPT_DOWARN, | |
2243 | &gq))) { | |
2244 | if (uq) | |
2245 | xfs_qm_dqrele(uq); | |
2246 | ASSERT(error != ENOENT); | |
2247 | return (error); | |
2248 | } | |
2249 | xfs_dqunlock(gq); | |
2250 | lockflags = XFS_ILOCK_SHARED; | |
2251 | xfs_ilock(ip, lockflags); | |
2252 | } else { | |
2253 | ASSERT(ip->i_gdquot); | |
2254 | gq = ip->i_gdquot; | |
2255 | xfs_dqlock(gq); | |
2256 | XFS_DQHOLD(gq); | |
2257 | xfs_dqunlock(gq); | |
2258 | } | |
1da177e4 LT |
2259 | } |
2260 | if (uq) | |
0b1b213f | 2261 | trace_xfs_dquot_dqalloc(ip); |
1da177e4 LT |
2262 | |
2263 | xfs_iunlock(ip, lockflags); | |
2264 | if (O_udqpp) | |
2265 | *O_udqpp = uq; | |
2266 | else if (uq) | |
2267 | xfs_qm_dqrele(uq); | |
2268 | if (O_gdqpp) | |
2269 | *O_gdqpp = gq; | |
2270 | else if (gq) | |
2271 | xfs_qm_dqrele(gq); | |
014c2544 | 2272 | return 0; |
1da177e4 LT |
2273 | } |
2274 | ||
2275 | /* | |
2276 | * Actually transfer ownership, and do dquot modifications. | |
2277 | * These were already reserved. | |
2278 | */ | |
2279 | xfs_dquot_t * | |
2280 | xfs_qm_vop_chown( | |
2281 | xfs_trans_t *tp, | |
2282 | xfs_inode_t *ip, | |
2283 | xfs_dquot_t **IO_olddq, | |
2284 | xfs_dquot_t *newdq) | |
2285 | { | |
2286 | xfs_dquot_t *prevdq; | |
06d10dd9 NS |
2287 | uint bfield = XFS_IS_REALTIME_INODE(ip) ? |
2288 | XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; | |
2289 | ||
7d095257 | 2290 | |
579aa9ca | 2291 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
2292 | ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); |
2293 | ||
2294 | /* old dquot */ | |
2295 | prevdq = *IO_olddq; | |
2296 | ASSERT(prevdq); | |
2297 | ASSERT(prevdq != newdq); | |
2298 | ||
06d10dd9 NS |
2299 | xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); |
2300 | xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); | |
1da177e4 LT |
2301 | |
2302 | /* the sparkling new dquot */ | |
06d10dd9 NS |
2303 | xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); |
2304 | xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); | |
1da177e4 LT |
2305 | |
2306 | /* | |
2307 | * Take an extra reference, because the inode | |
2308 | * is going to keep this dquot pointer even | |
2309 | * after the trans_commit. | |
2310 | */ | |
2311 | xfs_dqlock(newdq); | |
2312 | XFS_DQHOLD(newdq); | |
2313 | xfs_dqunlock(newdq); | |
2314 | *IO_olddq = newdq; | |
2315 | ||
014c2544 | 2316 | return prevdq; |
1da177e4 LT |
2317 | } |
2318 | ||
2319 | /* | |
c8ad20ff | 2320 | * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). |
1da177e4 LT |
2321 | */ |
2322 | int | |
2323 | xfs_qm_vop_chown_reserve( | |
2324 | xfs_trans_t *tp, | |
2325 | xfs_inode_t *ip, | |
2326 | xfs_dquot_t *udqp, | |
2327 | xfs_dquot_t *gdqp, | |
2328 | uint flags) | |
2329 | { | |
7d095257 | 2330 | xfs_mount_t *mp = ip->i_mount; |
9a2a7de2 | 2331 | uint delblks, blkflags, prjflags = 0; |
1da177e4 | 2332 | xfs_dquot_t *unresudq, *unresgdq, *delblksudq, *delblksgdq; |
7d095257 CH |
2333 | int error; |
2334 | ||
1da177e4 | 2335 | |
579aa9ca | 2336 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); |
1da177e4 LT |
2337 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
2338 | ||
2339 | delblks = ip->i_delayed_blks; | |
2340 | delblksudq = delblksgdq = unresudq = unresgdq = NULL; | |
06d10dd9 NS |
2341 | blkflags = XFS_IS_REALTIME_INODE(ip) ? |
2342 | XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; | |
1da177e4 LT |
2343 | |
2344 | if (XFS_IS_UQUOTA_ON(mp) && udqp && | |
1149d96a | 2345 | ip->i_d.di_uid != (uid_t)be32_to_cpu(udqp->q_core.d_id)) { |
1da177e4 LT |
2346 | delblksudq = udqp; |
2347 | /* | |
2348 | * If there are delayed allocation blocks, then we have to | |
2349 | * unreserve those from the old dquot, and add them to the | |
2350 | * new dquot. | |
2351 | */ | |
2352 | if (delblks) { | |
2353 | ASSERT(ip->i_udquot); | |
2354 | unresudq = ip->i_udquot; | |
2355 | } | |
2356 | } | |
c8ad20ff | 2357 | if (XFS_IS_OQUOTA_ON(ip->i_mount) && gdqp) { |
9a2a7de2 | 2358 | if (XFS_IS_PQUOTA_ON(ip->i_mount) && |
6743099c | 2359 | xfs_get_projid(ip) != be32_to_cpu(gdqp->q_core.d_id)) |
9a2a7de2 NS |
2360 | prjflags = XFS_QMOPT_ENOSPC; |
2361 | ||
2362 | if (prjflags || | |
2363 | (XFS_IS_GQUOTA_ON(ip->i_mount) && | |
2364 | ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id))) { | |
c8ad20ff NS |
2365 | delblksgdq = gdqp; |
2366 | if (delblks) { | |
2367 | ASSERT(ip->i_gdquot); | |
2368 | unresgdq = ip->i_gdquot; | |
2369 | } | |
1da177e4 LT |
2370 | } |
2371 | } | |
2372 | ||
2373 | if ((error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, | |
2374 | delblksudq, delblksgdq, ip->i_d.di_nblocks, 1, | |
9a2a7de2 | 2375 | flags | blkflags | prjflags))) |
1da177e4 LT |
2376 | return (error); |
2377 | ||
2378 | /* | |
2379 | * Do the delayed blks reservations/unreservations now. Since, these | |
2380 | * are done without the help of a transaction, if a reservation fails | |
2381 | * its previous reservations won't be automatically undone by trans | |
2382 | * code. So, we have to do it manually here. | |
2383 | */ | |
2384 | if (delblks) { | |
2385 | /* | |
2386 | * Do the reservations first. Unreservation can't fail. | |
2387 | */ | |
2388 | ASSERT(delblksudq || delblksgdq); | |
2389 | ASSERT(unresudq || unresgdq); | |
2390 | if ((error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
2391 | delblksudq, delblksgdq, (xfs_qcnt_t)delblks, 0, | |
9a2a7de2 | 2392 | flags | blkflags | prjflags))) |
1da177e4 LT |
2393 | return (error); |
2394 | xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
2395 | unresudq, unresgdq, -((xfs_qcnt_t)delblks), 0, | |
06d10dd9 | 2396 | blkflags); |
1da177e4 LT |
2397 | } |
2398 | ||
2399 | return (0); | |
2400 | } | |
2401 | ||
2402 | int | |
2403 | xfs_qm_vop_rename_dqattach( | |
7d095257 | 2404 | struct xfs_inode **i_tab) |
1da177e4 | 2405 | { |
7d095257 CH |
2406 | struct xfs_mount *mp = i_tab[0]->i_mount; |
2407 | int i; | |
1da177e4 | 2408 | |
7d095257 | 2409 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
014c2544 | 2410 | return 0; |
1da177e4 | 2411 | |
7d095257 CH |
2412 | for (i = 0; (i < 4 && i_tab[i]); i++) { |
2413 | struct xfs_inode *ip = i_tab[i]; | |
2414 | int error; | |
2415 | ||
1da177e4 LT |
2416 | /* |
2417 | * Watch out for duplicate entries in the table. | |
2418 | */ | |
7d095257 CH |
2419 | if (i == 0 || ip != i_tab[i-1]) { |
2420 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
1da177e4 LT |
2421 | error = xfs_qm_dqattach(ip, 0); |
2422 | if (error) | |
014c2544 | 2423 | return error; |
1da177e4 LT |
2424 | } |
2425 | } | |
2426 | } | |
014c2544 | 2427 | return 0; |
1da177e4 LT |
2428 | } |
2429 | ||
2430 | void | |
7d095257 CH |
2431 | xfs_qm_vop_create_dqattach( |
2432 | struct xfs_trans *tp, | |
2433 | struct xfs_inode *ip, | |
2434 | struct xfs_dquot *udqp, | |
2435 | struct xfs_dquot *gdqp) | |
1da177e4 | 2436 | { |
7d095257 CH |
2437 | struct xfs_mount *mp = tp->t_mountp; |
2438 | ||
2439 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) | |
1da177e4 LT |
2440 | return; |
2441 | ||
579aa9ca | 2442 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
7d095257 | 2443 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1da177e4 LT |
2444 | |
2445 | if (udqp) { | |
2446 | xfs_dqlock(udqp); | |
2447 | XFS_DQHOLD(udqp); | |
2448 | xfs_dqunlock(udqp); | |
2449 | ASSERT(ip->i_udquot == NULL); | |
2450 | ip->i_udquot = udqp; | |
7d095257 | 2451 | ASSERT(XFS_IS_UQUOTA_ON(mp)); |
1149d96a | 2452 | ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); |
1da177e4 LT |
2453 | xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); |
2454 | } | |
2455 | if (gdqp) { | |
2456 | xfs_dqlock(gdqp); | |
2457 | XFS_DQHOLD(gdqp); | |
2458 | xfs_dqunlock(gdqp); | |
2459 | ASSERT(ip->i_gdquot == NULL); | |
2460 | ip->i_gdquot = gdqp; | |
7d095257 CH |
2461 | ASSERT(XFS_IS_OQUOTA_ON(mp)); |
2462 | ASSERT((XFS_IS_GQUOTA_ON(mp) ? | |
6743099c | 2463 | ip->i_d.di_gid : xfs_get_projid(ip)) == |
ee2a4f7c | 2464 | be32_to_cpu(gdqp->q_core.d_id)); |
1da177e4 LT |
2465 | xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); |
2466 | } | |
2467 | } | |
2468 |