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 | 57 | |
7989cb8e | 58 | static cred_t xfs_zerocr; |
dae81d47 | 59 | |
1da177e4 LT |
60 | STATIC void xfs_qm_list_init(xfs_dqlist_t *, char *, int); |
61 | STATIC void xfs_qm_list_destroy(xfs_dqlist_t *); | |
62 | ||
63 | STATIC int xfs_qm_init_quotainos(xfs_mount_t *); | |
ba0f32d4 | 64 | STATIC int xfs_qm_init_quotainfo(xfs_mount_t *); |
7f8275d0 | 65 | STATIC int xfs_qm_shake(struct shrinker *, int, gfp_t); |
1da177e4 | 66 | |
8e1f936b RR |
67 | static struct shrinker xfs_qm_shaker = { |
68 | .shrink = xfs_qm_shake, | |
69 | .seeks = DEFAULT_SEEKS, | |
70 | }; | |
71 | ||
1da177e4 | 72 | #ifdef DEBUG |
a0b0b8a5 | 73 | extern struct mutex qcheck_lock; |
1da177e4 LT |
74 | #endif |
75 | ||
76 | #ifdef QUOTADEBUG | |
3a25404b DC |
77 | static void |
78 | xfs_qm_dquot_list_print( | |
79 | struct xfs_mount *mp) | |
80 | { | |
81 | xfs_dquot_t *dqp; | |
82 | int i = 0; | |
83 | ||
84 | list_for_each_entry(dqp, &mp->m_quotainfo->qi_dqlist_lock, qi_mplist) { | |
85 | cmn_err(CE_DEBUG, " %d. \"%d (%s)\" " | |
86 | "bcnt = %lld, icnt = %lld, refs = %d", | |
87 | i++, be32_to_cpu(dqp->q_core.d_id), | |
88 | DQFLAGTO_TYPESTR(dqp), | |
89 | (long long)be64_to_cpu(dqp->q_core.d_bcount), | |
90 | (long long)be64_to_cpu(dqp->q_core.d_icount), | |
91 | dqp->q_nrefs); | |
92 | } | |
1da177e4 LT |
93 | } |
94 | #else | |
3a25404b | 95 | static void xfs_qm_dquot_list_print(struct xfs_mount *mp) { } |
1da177e4 LT |
96 | #endif |
97 | ||
98 | /* | |
99 | * Initialize the XQM structure. | |
100 | * Note that there is not one quota manager per file system. | |
101 | */ | |
102 | STATIC struct xfs_qm * | |
103 | xfs_Gqm_init(void) | |
104 | { | |
6b3f6b5b NS |
105 | xfs_dqhash_t *udqhash, *gdqhash; |
106 | xfs_qm_t *xqm; | |
215101c3 NS |
107 | size_t hsize; |
108 | uint i; | |
1da177e4 LT |
109 | |
110 | /* | |
111 | * Initialize the dquot hash tables. | |
112 | */ | |
77e4635a | 113 | udqhash = kmem_zalloc_greedy(&hsize, |
5995cb7d | 114 | XFS_QM_HASHSIZE_LOW * sizeof(xfs_dqhash_t), |
bdfb0430 CH |
115 | XFS_QM_HASHSIZE_HIGH * sizeof(xfs_dqhash_t)); |
116 | if (!udqhash) | |
117 | goto out; | |
118 | ||
119 | gdqhash = kmem_zalloc_large(hsize); | |
d67b1b03 | 120 | if (!gdqhash) |
bdfb0430 CH |
121 | goto out_free_udqhash; |
122 | ||
77e4635a | 123 | hsize /= sizeof(xfs_dqhash_t); |
6b3f6b5b | 124 | ndquot = hsize << 8; |
1da177e4 | 125 | |
6b3f6b5b NS |
126 | xqm = kmem_zalloc(sizeof(xfs_qm_t), KM_SLEEP); |
127 | xqm->qm_dqhashmask = hsize - 1; | |
128 | xqm->qm_usr_dqhtable = udqhash; | |
129 | xqm->qm_grp_dqhtable = gdqhash; | |
1da177e4 LT |
130 | ASSERT(xqm->qm_usr_dqhtable != NULL); |
131 | ASSERT(xqm->qm_grp_dqhtable != NULL); | |
132 | ||
133 | for (i = 0; i < hsize; i++) { | |
134 | xfs_qm_list_init(&(xqm->qm_usr_dqhtable[i]), "uxdqh", i); | |
135 | xfs_qm_list_init(&(xqm->qm_grp_dqhtable[i]), "gxdqh", i); | |
136 | } | |
137 | ||
138 | /* | |
139 | * Freelist of all dquots of all file systems | |
140 | */ | |
3a8406f6 DC |
141 | INIT_LIST_HEAD(&xqm->qm_dqfrlist); |
142 | xqm->qm_dqfrlist_cnt = 0; | |
143 | mutex_init(&xqm->qm_dqfrlist_lock); | |
1da177e4 LT |
144 | |
145 | /* | |
146 | * dquot zone. we register our own low-memory callback. | |
147 | */ | |
148 | if (!qm_dqzone) { | |
149 | xqm->qm_dqzone = kmem_zone_init(sizeof(xfs_dquot_t), | |
150 | "xfs_dquots"); | |
151 | qm_dqzone = xqm->qm_dqzone; | |
152 | } else | |
153 | xqm->qm_dqzone = qm_dqzone; | |
154 | ||
8e1f936b | 155 | register_shrinker(&xfs_qm_shaker); |
1da177e4 LT |
156 | |
157 | /* | |
158 | * The t_dqinfo portion of transactions. | |
159 | */ | |
160 | if (!qm_dqtrxzone) { | |
161 | xqm->qm_dqtrxzone = kmem_zone_init(sizeof(xfs_dquot_acct_t), | |
162 | "xfs_dqtrx"); | |
163 | qm_dqtrxzone = xqm->qm_dqtrxzone; | |
164 | } else | |
165 | xqm->qm_dqtrxzone = qm_dqtrxzone; | |
166 | ||
167 | atomic_set(&xqm->qm_totaldquots, 0); | |
168 | xqm->qm_dqfree_ratio = XFS_QM_DQFREE_RATIO; | |
169 | xqm->qm_nrefs = 0; | |
170 | #ifdef DEBUG | |
c2e81432 | 171 | mutex_init(&qcheck_lock); |
1da177e4 LT |
172 | #endif |
173 | return xqm; | |
bdfb0430 CH |
174 | |
175 | out_free_udqhash: | |
176 | kmem_free_large(udqhash); | |
177 | out: | |
178 | return NULL; | |
1da177e4 LT |
179 | } |
180 | ||
181 | /* | |
182 | * Destroy the global quota manager when its reference count goes to zero. | |
183 | */ | |
ba0f32d4 | 184 | STATIC void |
1da177e4 LT |
185 | xfs_qm_destroy( |
186 | struct xfs_qm *xqm) | |
187 | { | |
3a8406f6 | 188 | struct xfs_dquot *dqp, *n; |
1da177e4 LT |
189 | int hsize, i; |
190 | ||
191 | ASSERT(xqm != NULL); | |
192 | ASSERT(xqm->qm_nrefs == 0); | |
8e1f936b | 193 | unregister_shrinker(&xfs_qm_shaker); |
1da177e4 LT |
194 | hsize = xqm->qm_dqhashmask + 1; |
195 | for (i = 0; i < hsize; i++) { | |
196 | xfs_qm_list_destroy(&(xqm->qm_usr_dqhtable[i])); | |
197 | xfs_qm_list_destroy(&(xqm->qm_grp_dqhtable[i])); | |
198 | } | |
bdfb0430 CH |
199 | kmem_free_large(xqm->qm_usr_dqhtable); |
200 | kmem_free_large(xqm->qm_grp_dqhtable); | |
1da177e4 LT |
201 | xqm->qm_usr_dqhtable = NULL; |
202 | xqm->qm_grp_dqhtable = NULL; | |
203 | xqm->qm_dqhashmask = 0; | |
3a8406f6 DC |
204 | |
205 | /* frlist cleanup */ | |
206 | mutex_lock(&xqm->qm_dqfrlist_lock); | |
207 | list_for_each_entry_safe(dqp, n, &xqm->qm_dqfrlist, q_freelist) { | |
208 | xfs_dqlock(dqp); | |
209 | #ifdef QUOTADEBUG | |
210 | cmn_err(CE_DEBUG, "FREELIST destroy 0x%p", dqp); | |
211 | #endif | |
212 | list_del_init(&dqp->q_freelist); | |
213 | xfs_Gqm->qm_dqfrlist_cnt--; | |
214 | xfs_dqunlock(dqp); | |
215 | xfs_qm_dqdestroy(dqp); | |
216 | } | |
217 | mutex_unlock(&xqm->qm_dqfrlist_lock); | |
218 | mutex_destroy(&xqm->qm_dqfrlist_lock); | |
1da177e4 LT |
219 | #ifdef DEBUG |
220 | mutex_destroy(&qcheck_lock); | |
221 | #endif | |
f0e2d93c | 222 | kmem_free(xqm); |
1da177e4 LT |
223 | } |
224 | ||
225 | /* | |
226 | * Called at mount time to let XQM know that another file system is | |
227 | * starting quotas. This isn't crucial information as the individual mount | |
228 | * structures are pretty independent, but it helps the XQM keep a | |
229 | * global view of what's going on. | |
230 | */ | |
231 | /* ARGSUSED */ | |
232 | STATIC int | |
233 | xfs_qm_hold_quotafs_ref( | |
234 | struct xfs_mount *mp) | |
235 | { | |
236 | /* | |
237 | * Need to lock the xfs_Gqm structure for things like this. For example, | |
238 | * the structure could disappear between the entry to this routine and | |
239 | * a HOLD operation if not locked. | |
240 | */ | |
e2494582 | 241 | mutex_lock(&xfs_Gqm_lock); |
1da177e4 | 242 | |
bdfb0430 | 243 | if (!xfs_Gqm) { |
1da177e4 | 244 | xfs_Gqm = xfs_Gqm_init(); |
38e712ab JL |
245 | if (!xfs_Gqm) { |
246 | mutex_unlock(&xfs_Gqm_lock); | |
bdfb0430 | 247 | return ENOMEM; |
38e712ab | 248 | } |
bdfb0430 CH |
249 | } |
250 | ||
1da177e4 LT |
251 | /* |
252 | * We can keep a list of all filesystems with quotas mounted for | |
253 | * debugging and statistical purposes, but ... | |
254 | * Just take a reference and get out. | |
255 | */ | |
e2494582 CH |
256 | xfs_Gqm->qm_nrefs++; |
257 | mutex_unlock(&xfs_Gqm_lock); | |
1da177e4 LT |
258 | |
259 | return 0; | |
260 | } | |
261 | ||
262 | ||
263 | /* | |
264 | * Release the reference that a filesystem took at mount time, | |
265 | * so that we know when we need to destroy the entire quota manager. | |
266 | */ | |
267 | /* ARGSUSED */ | |
268 | STATIC void | |
269 | xfs_qm_rele_quotafs_ref( | |
270 | struct xfs_mount *mp) | |
271 | { | |
3a8406f6 | 272 | xfs_dquot_t *dqp, *n; |
1da177e4 LT |
273 | |
274 | ASSERT(xfs_Gqm); | |
275 | ASSERT(xfs_Gqm->qm_nrefs > 0); | |
276 | ||
277 | /* | |
278 | * Go thru the freelist and destroy all inactive dquots. | |
279 | */ | |
3a8406f6 | 280 | mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 | 281 | |
3a8406f6 | 282 | list_for_each_entry_safe(dqp, n, &xfs_Gqm->qm_dqfrlist, q_freelist) { |
1da177e4 | 283 | xfs_dqlock(dqp); |
1da177e4 LT |
284 | if (dqp->dq_flags & XFS_DQ_INACTIVE) { |
285 | ASSERT(dqp->q_mount == NULL); | |
286 | ASSERT(! XFS_DQ_IS_DIRTY(dqp)); | |
e6a81f13 | 287 | ASSERT(list_empty(&dqp->q_hashlist)); |
3a25404b | 288 | ASSERT(list_empty(&dqp->q_mplist)); |
3a8406f6 DC |
289 | list_del_init(&dqp->q_freelist); |
290 | xfs_Gqm->qm_dqfrlist_cnt--; | |
1da177e4 LT |
291 | xfs_dqunlock(dqp); |
292 | xfs_qm_dqdestroy(dqp); | |
293 | } else { | |
294 | xfs_dqunlock(dqp); | |
295 | } | |
1da177e4 | 296 | } |
3a8406f6 | 297 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 LT |
298 | |
299 | /* | |
300 | * Destroy the entire XQM. If somebody mounts with quotaon, this'll | |
301 | * be restarted. | |
302 | */ | |
e2494582 CH |
303 | mutex_lock(&xfs_Gqm_lock); |
304 | if (--xfs_Gqm->qm_nrefs == 0) { | |
1da177e4 LT |
305 | xfs_qm_destroy(xfs_Gqm); |
306 | xfs_Gqm = NULL; | |
307 | } | |
e2494582 | 308 | mutex_unlock(&xfs_Gqm_lock); |
1da177e4 LT |
309 | } |
310 | ||
1da177e4 LT |
311 | /* |
312 | * Just destroy the quotainfo structure. | |
313 | */ | |
314 | void | |
7d095257 CH |
315 | xfs_qm_unmount( |
316 | struct xfs_mount *mp) | |
1da177e4 | 317 | { |
7d095257 | 318 | if (mp->m_quotainfo) { |
8112e9dc | 319 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 | 320 | xfs_qm_destroy_quotainfo(mp); |
7d095257 | 321 | } |
1da177e4 LT |
322 | } |
323 | ||
324 | ||
325 | /* | |
326 | * This is called from xfs_mountfs to start quotas and initialize all | |
327 | * necessary data structures like quotainfo. This is also responsible for | |
328 | * running a quotacheck as necessary. We are guaranteed that the superblock | |
329 | * is consistently read in at this point. | |
53aa7915 DC |
330 | * |
331 | * If we fail here, the mount will continue with quota turned off. We don't | |
332 | * need to inidicate success or failure at all. | |
1da177e4 | 333 | */ |
53aa7915 | 334 | void |
1da177e4 | 335 | xfs_qm_mount_quotas( |
4249023a | 336 | xfs_mount_t *mp) |
1da177e4 | 337 | { |
1da177e4 LT |
338 | int error = 0; |
339 | uint sbf; | |
340 | ||
1da177e4 LT |
341 | /* |
342 | * If quotas on realtime volumes is not supported, we disable | |
343 | * quotas immediately. | |
344 | */ | |
345 | if (mp->m_sb.sb_rextents) { | |
346 | cmn_err(CE_NOTE, | |
347 | "Cannot turn on quotas for realtime filesystem %s", | |
348 | mp->m_fsname); | |
349 | mp->m_qflags = 0; | |
350 | goto write_changes; | |
351 | } | |
352 | ||
1da177e4 | 353 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
155ffd07 | 354 | |
1da177e4 LT |
355 | /* |
356 | * Allocate the quotainfo structure inside the mount struct, and | |
357 | * create quotainode(s), and change/rev superblock if necessary. | |
358 | */ | |
53aa7915 DC |
359 | error = xfs_qm_init_quotainfo(mp); |
360 | if (error) { | |
1da177e4 LT |
361 | /* |
362 | * We must turn off quotas. | |
363 | */ | |
364 | ASSERT(mp->m_quotainfo == NULL); | |
365 | mp->m_qflags = 0; | |
366 | goto write_changes; | |
367 | } | |
368 | /* | |
369 | * If any of the quotas are not consistent, do a quotacheck. | |
370 | */ | |
4249023a | 371 | if (XFS_QM_NEED_QUOTACHECK(mp)) { |
53aa7915 DC |
372 | error = xfs_qm_quotacheck(mp); |
373 | if (error) { | |
374 | /* Quotacheck failed and disabled quotas. */ | |
375 | return; | |
1da177e4 | 376 | } |
1da177e4 | 377 | } |
646d5bda DD |
378 | /* |
379 | * If one type of quotas is off, then it will lose its | |
380 | * quotachecked status, since we won't be doing accounting for | |
381 | * that type anymore. | |
382 | */ | |
53aa7915 | 383 | if (!XFS_IS_UQUOTA_ON(mp)) |
646d5bda | 384 | mp->m_qflags &= ~XFS_UQUOTA_CHKD; |
53aa7915 | 385 | if (!(XFS_IS_GQUOTA_ON(mp) || XFS_IS_PQUOTA_ON(mp))) |
646d5bda | 386 | mp->m_qflags &= ~XFS_OQUOTA_CHKD; |
155ffd07 | 387 | |
1da177e4 LT |
388 | write_changes: |
389 | /* | |
3685c2a1 | 390 | * We actually don't have to acquire the m_sb_lock at all. |
1da177e4 LT |
391 | * This can only be called from mount, and that's single threaded. XXX |
392 | */ | |
3685c2a1 | 393 | spin_lock(&mp->m_sb_lock); |
1da177e4 LT |
394 | sbf = mp->m_sb.sb_qflags; |
395 | mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL; | |
3685c2a1 | 396 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
397 | |
398 | if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { | |
399 | if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) { | |
400 | /* | |
401 | * We could only have been turning quotas off. | |
402 | * We aren't in very good shape actually because | |
403 | * the incore structures are convinced that quotas are | |
404 | * off, but the on disk superblock doesn't know that ! | |
405 | */ | |
406 | ASSERT(!(XFS_IS_QUOTA_RUNNING(mp))); | |
407 | xfs_fs_cmn_err(CE_ALERT, mp, | |
408 | "XFS mount_quotas: Superblock update failed!"); | |
409 | } | |
410 | } | |
411 | ||
412 | if (error) { | |
413 | xfs_fs_cmn_err(CE_WARN, mp, | |
414 | "Failed to initialize disk quotas."); | |
7d095257 | 415 | return; |
1da177e4 | 416 | } |
7d095257 CH |
417 | |
418 | #ifdef QUOTADEBUG | |
419 | if (XFS_IS_QUOTA_ON(mp)) | |
420 | xfs_qm_internalqcheck(mp); | |
421 | #endif | |
1da177e4 LT |
422 | } |
423 | ||
424 | /* | |
425 | * Called from the vfsops layer. | |
426 | */ | |
e57481dc | 427 | void |
1da177e4 LT |
428 | xfs_qm_unmount_quotas( |
429 | xfs_mount_t *mp) | |
430 | { | |
1da177e4 LT |
431 | /* |
432 | * Release the dquots that root inode, et al might be holding, | |
433 | * before we flush quotas and blow away the quotainfo structure. | |
434 | */ | |
435 | ASSERT(mp->m_rootip); | |
436 | xfs_qm_dqdetach(mp->m_rootip); | |
437 | if (mp->m_rbmip) | |
438 | xfs_qm_dqdetach(mp->m_rbmip); | |
439 | if (mp->m_rsumip) | |
440 | xfs_qm_dqdetach(mp->m_rsumip); | |
441 | ||
442 | /* | |
e57481dc | 443 | * Release the quota inodes. |
1da177e4 | 444 | */ |
1da177e4 | 445 | if (mp->m_quotainfo) { |
e57481dc CH |
446 | if (mp->m_quotainfo->qi_uquotaip) { |
447 | IRELE(mp->m_quotainfo->qi_uquotaip); | |
448 | mp->m_quotainfo->qi_uquotaip = NULL; | |
1da177e4 | 449 | } |
e57481dc CH |
450 | if (mp->m_quotainfo->qi_gquotaip) { |
451 | IRELE(mp->m_quotainfo->qi_gquotaip); | |
452 | mp->m_quotainfo->qi_gquotaip = NULL; | |
1da177e4 LT |
453 | } |
454 | } | |
1da177e4 LT |
455 | } |
456 | ||
457 | /* | |
458 | * Flush all dquots of the given file system to disk. The dquots are | |
459 | * _not_ purged from memory here, just their data written to disk. | |
460 | */ | |
ba0f32d4 | 461 | STATIC int |
1da177e4 | 462 | xfs_qm_dqflush_all( |
8a7b8a89 CH |
463 | struct xfs_mount *mp, |
464 | int sync_mode) | |
1da177e4 | 465 | { |
8a7b8a89 CH |
466 | struct xfs_quotainfo *q = mp->m_quotainfo; |
467 | int recl; | |
468 | struct xfs_dquot *dqp; | |
469 | int niters; | |
470 | int error; | |
1da177e4 | 471 | |
8a7b8a89 | 472 | if (!q) |
014c2544 | 473 | return 0; |
1da177e4 LT |
474 | niters = 0; |
475 | again: | |
8a7b8a89 CH |
476 | mutex_lock(&q->qi_dqlist_lock); |
477 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 LT |
478 | xfs_dqlock(dqp); |
479 | if (! XFS_DQ_IS_DIRTY(dqp)) { | |
480 | xfs_dqunlock(dqp); | |
481 | continue; | |
482 | } | |
0b1b213f | 483 | |
1da177e4 | 484 | /* XXX a sentinel would be better */ |
8a7b8a89 | 485 | recl = q->qi_dqreclaims; |
e1f49cf2 | 486 | if (!xfs_dqflock_nowait(dqp)) { |
1da177e4 LT |
487 | /* |
488 | * If we can't grab the flush lock then check | |
489 | * to see if the dquot has been flushed delayed | |
490 | * write. If so, grab its buffer and send it | |
491 | * out immediately. We'll be able to acquire | |
492 | * the flush lock when the I/O completes. | |
493 | */ | |
494 | xfs_qm_dqflock_pushbuf_wait(dqp); | |
495 | } | |
496 | /* | |
497 | * Let go of the mplist lock. We don't want to hold it | |
498 | * across a disk write. | |
499 | */ | |
8a7b8a89 | 500 | mutex_unlock(&q->qi_dqlist_lock); |
20026d92 | 501 | error = xfs_qm_dqflush(dqp, sync_mode); |
1da177e4 LT |
502 | xfs_dqunlock(dqp); |
503 | if (error) | |
014c2544 | 504 | return error; |
1da177e4 | 505 | |
8a7b8a89 CH |
506 | mutex_lock(&q->qi_dqlist_lock); |
507 | if (recl != q->qi_dqreclaims) { | |
508 | mutex_unlock(&q->qi_dqlist_lock); | |
1da177e4 LT |
509 | /* XXX restart limit */ |
510 | goto again; | |
511 | } | |
512 | } | |
513 | ||
8a7b8a89 | 514 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 | 515 | /* return ! busy */ |
014c2544 | 516 | return 0; |
1da177e4 LT |
517 | } |
518 | /* | |
519 | * Release the group dquot pointers the user dquots may be | |
520 | * carrying around as a hint. mplist is locked on entry and exit. | |
521 | */ | |
522 | STATIC void | |
523 | xfs_qm_detach_gdquots( | |
8a7b8a89 | 524 | struct xfs_mount *mp) |
1da177e4 | 525 | { |
8a7b8a89 CH |
526 | struct xfs_quotainfo *q = mp->m_quotainfo; |
527 | struct xfs_dquot *dqp, *gdqp; | |
528 | int nrecl; | |
1da177e4 LT |
529 | |
530 | again: | |
8a7b8a89 CH |
531 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
532 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 LT |
533 | xfs_dqlock(dqp); |
534 | if ((gdqp = dqp->q_gdquot)) { | |
535 | xfs_dqlock(gdqp); | |
536 | dqp->q_gdquot = NULL; | |
537 | } | |
538 | xfs_dqunlock(dqp); | |
539 | ||
540 | if (gdqp) { | |
541 | /* | |
542 | * Can't hold the mplist lock across a dqput. | |
543 | * XXXmust convert to marker based iterations here. | |
544 | */ | |
8a7b8a89 CH |
545 | nrecl = q->qi_dqreclaims; |
546 | mutex_unlock(&q->qi_dqlist_lock); | |
1da177e4 LT |
547 | xfs_qm_dqput(gdqp); |
548 | ||
8a7b8a89 CH |
549 | mutex_lock(&q->qi_dqlist_lock); |
550 | if (nrecl != q->qi_dqreclaims) | |
1da177e4 LT |
551 | goto again; |
552 | } | |
1da177e4 LT |
553 | } |
554 | } | |
555 | ||
556 | /* | |
557 | * Go through all the incore dquots of this file system and take them | |
558 | * off the mplist and hashlist, if the dquot type matches the dqtype | |
559 | * parameter. This is used when turning off quota accounting for | |
560 | * users and/or groups, as well as when the filesystem is unmounting. | |
561 | */ | |
562 | STATIC int | |
563 | xfs_qm_dqpurge_int( | |
8a7b8a89 CH |
564 | struct xfs_mount *mp, |
565 | uint flags) | |
1da177e4 | 566 | { |
8a7b8a89 CH |
567 | struct xfs_quotainfo *q = mp->m_quotainfo; |
568 | struct xfs_dquot *dqp, *n; | |
569 | uint dqtype; | |
570 | int nrecl; | |
571 | int nmisses; | |
1da177e4 | 572 | |
8a7b8a89 | 573 | if (!q) |
014c2544 | 574 | return 0; |
1da177e4 LT |
575 | |
576 | dqtype = (flags & XFS_QMOPT_UQUOTA) ? XFS_DQ_USER : 0; | |
c8ad20ff | 577 | dqtype |= (flags & XFS_QMOPT_PQUOTA) ? XFS_DQ_PROJ : 0; |
1da177e4 LT |
578 | dqtype |= (flags & XFS_QMOPT_GQUOTA) ? XFS_DQ_GROUP : 0; |
579 | ||
8a7b8a89 | 580 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
581 | |
582 | /* | |
583 | * In the first pass through all incore dquots of this filesystem, | |
584 | * we release the group dquot pointers the user dquots may be | |
585 | * carrying around as a hint. We need to do this irrespective of | |
586 | * what's being turned off. | |
587 | */ | |
588 | xfs_qm_detach_gdquots(mp); | |
589 | ||
590 | again: | |
591 | nmisses = 0; | |
8a7b8a89 | 592 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
1da177e4 LT |
593 | /* |
594 | * Try to get rid of all of the unwanted dquots. The idea is to | |
595 | * get them off mplist and hashlist, but leave them on freelist. | |
596 | */ | |
8a7b8a89 | 597 | list_for_each_entry_safe(dqp, n, &q->qi_dqlist, q_mplist) { |
1da177e4 LT |
598 | /* |
599 | * It's OK to look at the type without taking dqlock here. | |
600 | * We're holding the mplist lock here, and that's needed for | |
601 | * a dqreclaim. | |
602 | */ | |
3a25404b | 603 | if ((dqp->dq_flags & dqtype) == 0) |
1da177e4 | 604 | continue; |
1da177e4 | 605 | |
c9a192dc | 606 | if (!mutex_trylock(&dqp->q_hash->qh_lock)) { |
8a7b8a89 CH |
607 | nrecl = q->qi_dqreclaims; |
608 | mutex_unlock(&q->qi_dqlist_lock); | |
c9a192dc | 609 | mutex_lock(&dqp->q_hash->qh_lock); |
8a7b8a89 | 610 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
611 | |
612 | /* | |
613 | * XXXTheoretically, we can get into a very long | |
614 | * ping pong game here. | |
615 | * No one can be adding dquots to the mplist at | |
616 | * this point, but somebody might be taking things off. | |
617 | */ | |
8a7b8a89 | 618 | if (nrecl != q->qi_dqreclaims) { |
c9a192dc | 619 | mutex_unlock(&dqp->q_hash->qh_lock); |
1da177e4 LT |
620 | goto again; |
621 | } | |
622 | } | |
623 | ||
624 | /* | |
625 | * Take the dquot off the mplist and hashlist. It may remain on | |
626 | * freelist in INACTIVE state. | |
627 | */ | |
4f0e8a98 | 628 | nmisses += xfs_qm_dqpurge(dqp); |
1da177e4 | 629 | } |
8a7b8a89 | 630 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 LT |
631 | return nmisses; |
632 | } | |
633 | ||
634 | int | |
635 | xfs_qm_dqpurge_all( | |
636 | xfs_mount_t *mp, | |
637 | uint flags) | |
638 | { | |
639 | int ndquots; | |
640 | ||
641 | /* | |
642 | * Purge the dquot cache. | |
643 | * None of the dquots should really be busy at this point. | |
644 | */ | |
645 | if (mp->m_quotainfo) { | |
646 | while ((ndquots = xfs_qm_dqpurge_int(mp, flags))) { | |
647 | delay(ndquots * 10); | |
648 | } | |
649 | } | |
650 | return 0; | |
651 | } | |
652 | ||
653 | STATIC int | |
654 | xfs_qm_dqattach_one( | |
655 | xfs_inode_t *ip, | |
656 | xfs_dqid_t id, | |
657 | uint type, | |
658 | uint doalloc, | |
1da177e4 LT |
659 | xfs_dquot_t *udqhint, /* hint */ |
660 | xfs_dquot_t **IO_idqpp) | |
661 | { | |
662 | xfs_dquot_t *dqp; | |
663 | int error; | |
664 | ||
579aa9ca | 665 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 666 | error = 0; |
8e9b6e7f | 667 | |
1da177e4 LT |
668 | /* |
669 | * See if we already have it in the inode itself. IO_idqpp is | |
670 | * &i_udquot or &i_gdquot. This made the code look weird, but | |
671 | * made the logic a lot simpler. | |
672 | */ | |
8e9b6e7f CH |
673 | dqp = *IO_idqpp; |
674 | if (dqp) { | |
0b1b213f | 675 | trace_xfs_dqattach_found(dqp); |
8e9b6e7f | 676 | return 0; |
1da177e4 LT |
677 | } |
678 | ||
679 | /* | |
680 | * udqhint is the i_udquot field in inode, and is non-NULL only | |
c8ad20ff | 681 | * when the type arg is group/project. Its purpose is to save a |
1da177e4 LT |
682 | * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside |
683 | * the user dquot. | |
684 | */ | |
8e9b6e7f CH |
685 | if (udqhint) { |
686 | ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); | |
1da177e4 LT |
687 | xfs_dqlock(udqhint); |
688 | ||
8e9b6e7f CH |
689 | /* |
690 | * No need to take dqlock to look at the id. | |
691 | * | |
692 | * The ID can't change until it gets reclaimed, and it won't | |
693 | * be reclaimed as long as we have a ref from inode and we | |
694 | * hold the ilock. | |
695 | */ | |
696 | dqp = udqhint->q_gdquot; | |
697 | if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) { | |
698 | xfs_dqlock(dqp); | |
699 | XFS_DQHOLD(dqp); | |
700 | ASSERT(*IO_idqpp == NULL); | |
701 | *IO_idqpp = dqp; | |
702 | ||
1da177e4 LT |
703 | xfs_dqunlock(dqp); |
704 | xfs_dqunlock(udqhint); | |
8e9b6e7f | 705 | return 0; |
1da177e4 | 706 | } |
8e9b6e7f CH |
707 | |
708 | /* | |
709 | * We can't hold a dquot lock when we call the dqget code. | |
710 | * We'll deadlock in no time, because of (not conforming to) | |
711 | * lock ordering - the inodelock comes before any dquot lock, | |
712 | * and we may drop and reacquire the ilock in xfs_qm_dqget(). | |
713 | */ | |
1da177e4 | 714 | xfs_dqunlock(udqhint); |
8e9b6e7f CH |
715 | } |
716 | ||
1da177e4 LT |
717 | /* |
718 | * Find the dquot from somewhere. This bumps the | |
719 | * reference count of dquot and returns it locked. | |
720 | * This can return ENOENT if dquot didn't exist on | |
721 | * disk and we didn't ask it to allocate; | |
722 | * ESRCH if quotas got turned off suddenly. | |
723 | */ | |
8e9b6e7f CH |
724 | error = xfs_qm_dqget(ip->i_mount, ip, id, type, XFS_QMOPT_DOWARN, &dqp); |
725 | if (error) | |
726 | return error; | |
1da177e4 | 727 | |
0b1b213f | 728 | trace_xfs_dqattach_get(dqp); |
8e9b6e7f | 729 | |
1da177e4 LT |
730 | /* |
731 | * dqget may have dropped and re-acquired the ilock, but it guarantees | |
732 | * that the dquot returned is the one that should go in the inode. | |
733 | */ | |
734 | *IO_idqpp = dqp; | |
8e9b6e7f CH |
735 | xfs_dqunlock(dqp); |
736 | return 0; | |
1da177e4 LT |
737 | } |
738 | ||
739 | ||
740 | /* | |
741 | * Given a udquot and gdquot, attach a ptr to the group dquot in the | |
742 | * udquot as a hint for future lookups. The idea sounds simple, but the | |
743 | * execution isn't, because the udquot might have a group dquot attached | |
c41564b5 | 744 | * already and getting rid of that gets us into lock ordering constraints. |
1da177e4 LT |
745 | * The process is complicated more by the fact that the dquots may or may not |
746 | * be locked on entry. | |
747 | */ | |
748 | STATIC void | |
749 | xfs_qm_dqattach_grouphint( | |
750 | xfs_dquot_t *udq, | |
8e9b6e7f | 751 | xfs_dquot_t *gdq) |
1da177e4 LT |
752 | { |
753 | xfs_dquot_t *tmp; | |
754 | ||
8e9b6e7f | 755 | xfs_dqlock(udq); |
1da177e4 LT |
756 | |
757 | if ((tmp = udq->q_gdquot)) { | |
758 | if (tmp == gdq) { | |
8e9b6e7f | 759 | xfs_dqunlock(udq); |
1da177e4 LT |
760 | return; |
761 | } | |
762 | ||
763 | udq->q_gdquot = NULL; | |
764 | /* | |
765 | * We can't keep any dqlocks when calling dqrele, | |
766 | * because the freelist lock comes before dqlocks. | |
767 | */ | |
768 | xfs_dqunlock(udq); | |
1da177e4 LT |
769 | /* |
770 | * we took a hard reference once upon a time in dqget, | |
771 | * so give it back when the udquot no longer points at it | |
772 | * dqput() does the unlocking of the dquot. | |
773 | */ | |
774 | xfs_qm_dqrele(tmp); | |
775 | ||
776 | xfs_dqlock(udq); | |
777 | xfs_dqlock(gdq); | |
778 | ||
779 | } else { | |
780 | ASSERT(XFS_DQ_IS_LOCKED(udq)); | |
8e9b6e7f | 781 | xfs_dqlock(gdq); |
1da177e4 LT |
782 | } |
783 | ||
784 | ASSERT(XFS_DQ_IS_LOCKED(udq)); | |
785 | ASSERT(XFS_DQ_IS_LOCKED(gdq)); | |
786 | /* | |
787 | * Somebody could have attached a gdquot here, | |
788 | * when we dropped the uqlock. If so, just do nothing. | |
789 | */ | |
790 | if (udq->q_gdquot == NULL) { | |
791 | XFS_DQHOLD(gdq); | |
792 | udq->q_gdquot = gdq; | |
793 | } | |
8e9b6e7f CH |
794 | |
795 | xfs_dqunlock(gdq); | |
796 | xfs_dqunlock(udq); | |
1da177e4 LT |
797 | } |
798 | ||
799 | ||
800 | /* | |
c8ad20ff NS |
801 | * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON |
802 | * into account. | |
1da177e4 | 803 | * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. |
1da177e4 LT |
804 | * Inode may get unlocked and relocked in here, and the caller must deal with |
805 | * the consequences. | |
806 | */ | |
807 | int | |
7d095257 | 808 | xfs_qm_dqattach_locked( |
1da177e4 LT |
809 | xfs_inode_t *ip, |
810 | uint flags) | |
811 | { | |
812 | xfs_mount_t *mp = ip->i_mount; | |
813 | uint nquotas = 0; | |
814 | int error = 0; | |
815 | ||
7d095257 CH |
816 | if (!XFS_IS_QUOTA_RUNNING(mp) || |
817 | !XFS_IS_QUOTA_ON(mp) || | |
818 | !XFS_NOT_DQATTACHED(mp, ip) || | |
819 | ip->i_ino == mp->m_sb.sb_uquotino || | |
820 | ip->i_ino == mp->m_sb.sb_gquotino) | |
014c2544 | 821 | return 0; |
1da177e4 | 822 | |
7d095257 | 823 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
824 | |
825 | if (XFS_IS_UQUOTA_ON(mp)) { | |
826 | error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, | |
827 | flags & XFS_QMOPT_DQALLOC, | |
1da177e4 LT |
828 | NULL, &ip->i_udquot); |
829 | if (error) | |
830 | goto done; | |
831 | nquotas++; | |
832 | } | |
579aa9ca CH |
833 | |
834 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); | |
c8ad20ff NS |
835 | if (XFS_IS_OQUOTA_ON(mp)) { |
836 | error = XFS_IS_GQUOTA_ON(mp) ? | |
837 | xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, | |
838 | flags & XFS_QMOPT_DQALLOC, | |
c8ad20ff NS |
839 | ip->i_udquot, &ip->i_gdquot) : |
840 | xfs_qm_dqattach_one(ip, ip->i_d.di_projid, XFS_DQ_PROJ, | |
1da177e4 | 841 | flags & XFS_QMOPT_DQALLOC, |
1da177e4 LT |
842 | ip->i_udquot, &ip->i_gdquot); |
843 | /* | |
844 | * Don't worry about the udquot that we may have | |
845 | * attached above. It'll get detached, if not already. | |
846 | */ | |
847 | if (error) | |
848 | goto done; | |
849 | nquotas++; | |
850 | } | |
851 | ||
852 | /* | |
853 | * Attach this group quota to the user quota as a hint. | |
854 | * This WON'T, in general, result in a thrash. | |
855 | */ | |
856 | if (nquotas == 2) { | |
579aa9ca | 857 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
858 | ASSERT(ip->i_udquot); |
859 | ASSERT(ip->i_gdquot); | |
860 | ||
861 | /* | |
862 | * We may or may not have the i_udquot locked at this point, | |
863 | * but this check is OK since we don't depend on the i_gdquot to | |
864 | * be accurate 100% all the time. It is just a hint, and this | |
865 | * will succeed in general. | |
866 | */ | |
867 | if (ip->i_udquot->q_gdquot == ip->i_gdquot) | |
868 | goto done; | |
869 | /* | |
870 | * Attach i_gdquot to the gdquot hint inside the i_udquot. | |
871 | */ | |
8e9b6e7f | 872 | xfs_qm_dqattach_grouphint(ip->i_udquot, ip->i_gdquot); |
1da177e4 LT |
873 | } |
874 | ||
7d095257 | 875 | done: |
1da177e4 LT |
876 | #ifdef QUOTADEBUG |
877 | if (! error) { | |
1da177e4 LT |
878 | if (XFS_IS_UQUOTA_ON(mp)) |
879 | ASSERT(ip->i_udquot); | |
c8ad20ff | 880 | if (XFS_IS_OQUOTA_ON(mp)) |
1da177e4 LT |
881 | ASSERT(ip->i_gdquot); |
882 | } | |
7d095257 | 883 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 884 | #endif |
7d095257 CH |
885 | return error; |
886 | } | |
1da177e4 | 887 | |
7d095257 CH |
888 | int |
889 | xfs_qm_dqattach( | |
890 | struct xfs_inode *ip, | |
891 | uint flags) | |
892 | { | |
893 | int error; | |
894 | ||
895 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
896 | error = xfs_qm_dqattach_locked(ip, flags); | |
897 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1da177e4 | 898 | |
014c2544 | 899 | return error; |
1da177e4 LT |
900 | } |
901 | ||
902 | /* | |
903 | * Release dquots (and their references) if any. | |
904 | * The inode should be locked EXCL except when this's called by | |
905 | * xfs_ireclaim. | |
906 | */ | |
907 | void | |
908 | xfs_qm_dqdetach( | |
909 | xfs_inode_t *ip) | |
910 | { | |
911 | if (!(ip->i_udquot || ip->i_gdquot)) | |
912 | return; | |
913 | ||
0b1b213f CH |
914 | trace_xfs_dquot_dqdetach(ip); |
915 | ||
1da177e4 LT |
916 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_uquotino); |
917 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_gquotino); | |
1da177e4 LT |
918 | if (ip->i_udquot) { |
919 | xfs_qm_dqrele(ip->i_udquot); | |
920 | ip->i_udquot = NULL; | |
921 | } | |
922 | if (ip->i_gdquot) { | |
923 | xfs_qm_dqrele(ip->i_gdquot); | |
924 | ip->i_gdquot = NULL; | |
925 | } | |
926 | } | |
927 | ||
1da177e4 LT |
928 | int |
929 | xfs_qm_sync( | |
8a7b8a89 CH |
930 | struct xfs_mount *mp, |
931 | int flags) | |
1da177e4 | 932 | { |
8a7b8a89 CH |
933 | struct xfs_quotainfo *q = mp->m_quotainfo; |
934 | int recl, restarts; | |
935 | struct xfs_dquot *dqp; | |
936 | int error; | |
1da177e4 | 937 | |
7d095257 | 938 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
d757762b DD |
939 | return 0; |
940 | ||
1da177e4 | 941 | restarts = 0; |
1da177e4 LT |
942 | |
943 | again: | |
8a7b8a89 | 944 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
945 | /* |
946 | * dqpurge_all() also takes the mplist lock and iterate thru all dquots | |
947 | * in quotaoff. However, if the QUOTA_ACTIVE bits are not cleared | |
948 | * when we have the mplist lock, we know that dquots will be consistent | |
949 | * as long as we have it locked. | |
950 | */ | |
3a25404b | 951 | if (!XFS_IS_QUOTA_ON(mp)) { |
8a7b8a89 | 952 | mutex_unlock(&q->qi_dqlist_lock); |
014c2544 | 953 | return 0; |
1da177e4 | 954 | } |
8a7b8a89 CH |
955 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
956 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 LT |
957 | /* |
958 | * If this is vfs_sync calling, then skip the dquots that | |
959 | * don't 'seem' to be dirty. ie. don't acquire dqlock. | |
960 | * This is very similar to what xfs_sync does with inodes. | |
961 | */ | |
8b5403a6 CH |
962 | if (flags & SYNC_TRYLOCK) { |
963 | if (!XFS_DQ_IS_DIRTY(dqp)) | |
1da177e4 | 964 | continue; |
8b5403a6 | 965 | if (!xfs_qm_dqlock_nowait(dqp)) |
1da177e4 LT |
966 | continue; |
967 | } else { | |
968 | xfs_dqlock(dqp); | |
969 | } | |
970 | ||
971 | /* | |
972 | * Now, find out for sure if this dquot is dirty or not. | |
973 | */ | |
974 | if (! XFS_DQ_IS_DIRTY(dqp)) { | |
975 | xfs_dqunlock(dqp); | |
976 | continue; | |
977 | } | |
978 | ||
979 | /* XXX a sentinel would be better */ | |
8a7b8a89 | 980 | recl = q->qi_dqreclaims; |
e1f49cf2 | 981 | if (!xfs_dqflock_nowait(dqp)) { |
8b5403a6 | 982 | if (flags & SYNC_TRYLOCK) { |
1da177e4 LT |
983 | xfs_dqunlock(dqp); |
984 | continue; | |
985 | } | |
986 | /* | |
987 | * If we can't grab the flush lock then if the caller | |
c41564b5 | 988 | * really wanted us to give this our best shot, so |
1da177e4 LT |
989 | * see if we can give a push to the buffer before we wait |
990 | * on the flush lock. At this point, we know that | |
c41564b5 | 991 | * even though the dquot is being flushed, |
1da177e4 LT |
992 | * it has (new) dirty data. |
993 | */ | |
994 | xfs_qm_dqflock_pushbuf_wait(dqp); | |
995 | } | |
996 | /* | |
997 | * Let go of the mplist lock. We don't want to hold it | |
998 | * across a disk write | |
999 | */ | |
8a7b8a89 | 1000 | mutex_unlock(&q->qi_dqlist_lock); |
20026d92 | 1001 | error = xfs_qm_dqflush(dqp, flags); |
1da177e4 LT |
1002 | xfs_dqunlock(dqp); |
1003 | if (error && XFS_FORCED_SHUTDOWN(mp)) | |
014c2544 | 1004 | return 0; /* Need to prevent umount failure */ |
1da177e4 | 1005 | else if (error) |
014c2544 | 1006 | return error; |
1da177e4 | 1007 | |
8a7b8a89 CH |
1008 | mutex_lock(&q->qi_dqlist_lock); |
1009 | if (recl != q->qi_dqreclaims) { | |
1da177e4 LT |
1010 | if (++restarts >= XFS_QM_SYNC_MAX_RESTARTS) |
1011 | break; | |
1012 | ||
8a7b8a89 | 1013 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 LT |
1014 | goto again; |
1015 | } | |
1016 | } | |
1017 | ||
8a7b8a89 | 1018 | mutex_unlock(&q->qi_dqlist_lock); |
014c2544 | 1019 | return 0; |
1da177e4 LT |
1020 | } |
1021 | ||
a4edd1da CH |
1022 | /* |
1023 | * The hash chains and the mplist use the same xfs_dqhash structure as | |
1024 | * their list head, but we can take the mplist qh_lock and one of the | |
1025 | * hash qh_locks at the same time without any problem as they aren't | |
1026 | * related. | |
1027 | */ | |
1028 | static struct lock_class_key xfs_quota_mplist_class; | |
1da177e4 LT |
1029 | |
1030 | /* | |
1031 | * This initializes all the quota information that's kept in the | |
1032 | * mount structure | |
1033 | */ | |
ba0f32d4 | 1034 | STATIC int |
1da177e4 LT |
1035 | xfs_qm_init_quotainfo( |
1036 | xfs_mount_t *mp) | |
1037 | { | |
1038 | xfs_quotainfo_t *qinf; | |
1039 | int error; | |
1040 | xfs_dquot_t *dqp; | |
1041 | ||
1042 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
1043 | ||
1044 | /* | |
1045 | * Tell XQM that we exist as soon as possible. | |
1046 | */ | |
1047 | if ((error = xfs_qm_hold_quotafs_ref(mp))) { | |
014c2544 | 1048 | return error; |
1da177e4 LT |
1049 | } |
1050 | ||
1051 | qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); | |
1052 | ||
1053 | /* | |
1054 | * See if quotainodes are setup, and if not, allocate them, | |
1055 | * and change the superblock accordingly. | |
1056 | */ | |
1057 | if ((error = xfs_qm_init_quotainos(mp))) { | |
f0e2d93c | 1058 | kmem_free(qinf); |
1da177e4 | 1059 | mp->m_quotainfo = NULL; |
014c2544 | 1060 | return error; |
1da177e4 LT |
1061 | } |
1062 | ||
3a25404b DC |
1063 | INIT_LIST_HEAD(&qinf->qi_dqlist); |
1064 | mutex_init(&qinf->qi_dqlist_lock); | |
1065 | lockdep_set_class(&qinf->qi_dqlist_lock, &xfs_quota_mplist_class); | |
a4edd1da | 1066 | |
1da177e4 LT |
1067 | qinf->qi_dqreclaims = 0; |
1068 | ||
1069 | /* mutex used to serialize quotaoffs */ | |
794ee1ba | 1070 | mutex_init(&qinf->qi_quotaofflock); |
1da177e4 LT |
1071 | |
1072 | /* Precalc some constants */ | |
1073 | qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
1074 | ASSERT(qinf->qi_dqchunklen); | |
1075 | qinf->qi_dqperchunk = BBTOB(qinf->qi_dqchunklen); | |
1076 | do_div(qinf->qi_dqperchunk, sizeof(xfs_dqblk_t)); | |
1077 | ||
1078 | mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); | |
1079 | ||
1080 | /* | |
1081 | * We try to get the limits from the superuser's limits fields. | |
1082 | * This is quite hacky, but it is standard quota practice. | |
1083 | * We look at the USR dquot with id == 0 first, but if user quotas | |
1084 | * are not enabled we goto the GRP dquot with id == 0. | |
1085 | * We don't really care to keep separate default limits for user | |
1086 | * and group quotas, at least not at this point. | |
1087 | */ | |
1088 | error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)0, | |
c8ad20ff NS |
1089 | XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : |
1090 | (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : | |
1091 | XFS_DQ_PROJ), | |
1da177e4 LT |
1092 | XFS_QMOPT_DQSUSER|XFS_QMOPT_DOWARN, |
1093 | &dqp); | |
1094 | if (! error) { | |
1095 | xfs_disk_dquot_t *ddqp = &dqp->q_core; | |
1096 | ||
1097 | /* | |
1098 | * The warnings and timers set the grace period given to | |
1099 | * a user or group before he or she can not perform any | |
1100 | * more writing. If it is zero, a default is used. | |
1101 | */ | |
1149d96a CH |
1102 | qinf->qi_btimelimit = ddqp->d_btimer ? |
1103 | be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; | |
1104 | qinf->qi_itimelimit = ddqp->d_itimer ? | |
1105 | be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; | |
1106 | qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? | |
1107 | be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; | |
1108 | qinf->qi_bwarnlimit = ddqp->d_bwarns ? | |
1109 | be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; | |
1110 | qinf->qi_iwarnlimit = ddqp->d_iwarns ? | |
1111 | be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; | |
1112 | qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? | |
1113 | be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; | |
1114 | qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); | |
1115 | qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); | |
1116 | qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); | |
1117 | qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); | |
1118 | qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); | |
1119 | qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); | |
1da177e4 LT |
1120 | |
1121 | /* | |
1122 | * We sent the XFS_QMOPT_DQSUSER flag to dqget because | |
1123 | * we don't want this dquot cached. We haven't done a | |
1124 | * quotacheck yet, and quotacheck doesn't like incore dquots. | |
1125 | */ | |
1126 | xfs_qm_dqdestroy(dqp); | |
1127 | } else { | |
1128 | qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; | |
1129 | qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; | |
1130 | qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; | |
1131 | qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; | |
1132 | qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; | |
06d10dd9 | 1133 | qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; |
1da177e4 LT |
1134 | } |
1135 | ||
014c2544 | 1136 | return 0; |
1da177e4 LT |
1137 | } |
1138 | ||
1139 | ||
1140 | /* | |
1141 | * Gets called when unmounting a filesystem or when all quotas get | |
1142 | * turned off. | |
1143 | * This purges the quota inodes, destroys locks and frees itself. | |
1144 | */ | |
1145 | void | |
1146 | xfs_qm_destroy_quotainfo( | |
1147 | xfs_mount_t *mp) | |
1148 | { | |
1149 | xfs_quotainfo_t *qi; | |
1150 | ||
1151 | qi = mp->m_quotainfo; | |
1152 | ASSERT(qi != NULL); | |
1153 | ASSERT(xfs_Gqm != NULL); | |
1154 | ||
1155 | /* | |
1156 | * Release the reference that XQM kept, so that we know | |
1157 | * when the XQM structure should be freed. We cannot assume | |
1158 | * that xfs_Gqm is non-null after this point. | |
1159 | */ | |
1160 | xfs_qm_rele_quotafs_ref(mp); | |
1161 | ||
3a25404b DC |
1162 | ASSERT(list_empty(&qi->qi_dqlist)); |
1163 | mutex_destroy(&qi->qi_dqlist_lock); | |
1da177e4 LT |
1164 | |
1165 | if (qi->qi_uquotaip) { | |
26cc0021 | 1166 | IRELE(qi->qi_uquotaip); |
1da177e4 LT |
1167 | qi->qi_uquotaip = NULL; /* paranoia */ |
1168 | } | |
1169 | if (qi->qi_gquotaip) { | |
26cc0021 | 1170 | IRELE(qi->qi_gquotaip); |
1da177e4 LT |
1171 | qi->qi_gquotaip = NULL; |
1172 | } | |
1173 | mutex_destroy(&qi->qi_quotaofflock); | |
f0e2d93c | 1174 | kmem_free(qi); |
1da177e4 LT |
1175 | mp->m_quotainfo = NULL; |
1176 | } | |
1177 | ||
1178 | ||
1179 | ||
1180 | /* ------------------- PRIVATE STATIC FUNCTIONS ----------------------- */ | |
1181 | ||
1182 | /* ARGSUSED */ | |
1183 | STATIC void | |
1184 | xfs_qm_list_init( | |
1185 | xfs_dqlist_t *list, | |
1186 | char *str, | |
1187 | int n) | |
1188 | { | |
794ee1ba | 1189 | mutex_init(&list->qh_lock); |
e6a81f13 | 1190 | INIT_LIST_HEAD(&list->qh_list); |
1da177e4 LT |
1191 | list->qh_version = 0; |
1192 | list->qh_nelems = 0; | |
1193 | } | |
1194 | ||
1195 | STATIC void | |
1196 | xfs_qm_list_destroy( | |
1197 | xfs_dqlist_t *list) | |
1198 | { | |
1199 | mutex_destroy(&(list->qh_lock)); | |
1200 | } | |
1201 | ||
1da177e4 LT |
1202 | /* |
1203 | * Create an inode and return with a reference already taken, but unlocked | |
1204 | * This is how we create quota inodes | |
1205 | */ | |
1206 | STATIC int | |
1207 | xfs_qm_qino_alloc( | |
1208 | xfs_mount_t *mp, | |
1209 | xfs_inode_t **ip, | |
1210 | __int64_t sbfields, | |
1211 | uint flags) | |
1212 | { | |
1213 | xfs_trans_t *tp; | |
1214 | int error; | |
1da177e4 LT |
1215 | int committed; |
1216 | ||
061f7209 | 1217 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); |
1da177e4 LT |
1218 | if ((error = xfs_trans_reserve(tp, |
1219 | XFS_QM_QINOCREATE_SPACE_RES(mp), | |
1220 | XFS_CREATE_LOG_RES(mp), 0, | |
1221 | XFS_TRANS_PERM_LOG_RES, | |
1222 | XFS_CREATE_LOG_COUNT))) { | |
1223 | xfs_trans_cancel(tp, 0); | |
014c2544 | 1224 | return error; |
1da177e4 | 1225 | } |
1da177e4 | 1226 | |
b11f94d5 | 1227 | if ((error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, |
dae81d47 | 1228 | &xfs_zerocr, 0, 1, ip, &committed))) { |
1da177e4 LT |
1229 | xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | |
1230 | XFS_TRANS_ABORT); | |
014c2544 | 1231 | return error; |
1da177e4 LT |
1232 | } |
1233 | ||
1234 | /* | |
1235 | * Keep an extra reference to this quota inode. This inode is | |
1236 | * locked exclusively and joined to the transaction already. | |
1237 | */ | |
579aa9ca | 1238 | ASSERT(xfs_isilocked(*ip, XFS_ILOCK_EXCL)); |
26cc0021 | 1239 | IHOLD(*ip); |
1da177e4 LT |
1240 | |
1241 | /* | |
1242 | * Make the changes in the superblock, and log those too. | |
1243 | * sbfields arg may contain fields other than *QUOTINO; | |
1244 | * VERSIONNUM for example. | |
1245 | */ | |
3685c2a1 | 1246 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 1247 | if (flags & XFS_QMOPT_SBVERSION) { |
62118709 | 1248 | ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); |
1da177e4 LT |
1249 | ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
1250 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)) == | |
1251 | (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1252 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)); | |
1253 | ||
62118709 | 1254 | xfs_sb_version_addquota(&mp->m_sb); |
1da177e4 LT |
1255 | mp->m_sb.sb_uquotino = NULLFSINO; |
1256 | mp->m_sb.sb_gquotino = NULLFSINO; | |
1257 | ||
1258 | /* qflags will get updated _after_ quotacheck */ | |
1259 | mp->m_sb.sb_qflags = 0; | |
1da177e4 LT |
1260 | } |
1261 | if (flags & XFS_QMOPT_UQUOTA) | |
1262 | mp->m_sb.sb_uquotino = (*ip)->i_ino; | |
1263 | else | |
1264 | mp->m_sb.sb_gquotino = (*ip)->i_ino; | |
3685c2a1 | 1265 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
1266 | xfs_mod_sb(tp, sbfields); |
1267 | ||
1c72bf90 | 1268 | if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { |
1da177e4 | 1269 | xfs_fs_cmn_err(CE_ALERT, mp, "XFS qino_alloc failed!"); |
014c2544 | 1270 | return error; |
1da177e4 | 1271 | } |
014c2544 | 1272 | return 0; |
1da177e4 LT |
1273 | } |
1274 | ||
1275 | ||
5b139738 | 1276 | STATIC void |
1da177e4 LT |
1277 | xfs_qm_reset_dqcounts( |
1278 | xfs_mount_t *mp, | |
1279 | xfs_buf_t *bp, | |
1280 | xfs_dqid_t id, | |
1281 | uint type) | |
1282 | { | |
1283 | xfs_disk_dquot_t *ddq; | |
1284 | int j; | |
1285 | ||
0b1b213f CH |
1286 | trace_xfs_reset_dqcounts(bp, _RET_IP_); |
1287 | ||
1da177e4 LT |
1288 | /* |
1289 | * Reset all counters and timers. They'll be | |
1290 | * started afresh by xfs_qm_quotacheck. | |
1291 | */ | |
1292 | #ifdef DEBUG | |
1293 | j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
1294 | do_div(j, sizeof(xfs_dqblk_t)); | |
8a7b8a89 | 1295 | ASSERT(mp->m_quotainfo->qi_dqperchunk == j); |
1da177e4 LT |
1296 | #endif |
1297 | ddq = (xfs_disk_dquot_t *)XFS_BUF_PTR(bp); | |
8a7b8a89 | 1298 | for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { |
1da177e4 LT |
1299 | /* |
1300 | * Do a sanity check, and if needed, repair the dqblk. Don't | |
1301 | * output any warnings because it's perfectly possible to | |
c41564b5 | 1302 | * find uninitialised dquot blks. See comment in xfs_qm_dqcheck. |
1da177e4 LT |
1303 | */ |
1304 | (void) xfs_qm_dqcheck(ddq, id+j, type, XFS_QMOPT_DQREPAIR, | |
1305 | "xfs_quotacheck"); | |
1149d96a CH |
1306 | ddq->d_bcount = 0; |
1307 | ddq->d_icount = 0; | |
1308 | ddq->d_rtbcount = 0; | |
1309 | ddq->d_btimer = 0; | |
1310 | ddq->d_itimer = 0; | |
1311 | ddq->d_rtbtimer = 0; | |
1312 | ddq->d_bwarns = 0; | |
1313 | ddq->d_iwarns = 0; | |
1314 | ddq->d_rtbwarns = 0; | |
1da177e4 LT |
1315 | ddq = (xfs_disk_dquot_t *) ((xfs_dqblk_t *)ddq + 1); |
1316 | } | |
1da177e4 LT |
1317 | } |
1318 | ||
1319 | STATIC int | |
1320 | xfs_qm_dqiter_bufs( | |
1321 | xfs_mount_t *mp, | |
1322 | xfs_dqid_t firstid, | |
1323 | xfs_fsblock_t bno, | |
1324 | xfs_filblks_t blkcnt, | |
1325 | uint flags) | |
1326 | { | |
1327 | xfs_buf_t *bp; | |
1328 | int error; | |
1329 | int notcommitted; | |
1330 | int incr; | |
c8ad20ff | 1331 | int type; |
1da177e4 LT |
1332 | |
1333 | ASSERT(blkcnt > 0); | |
1334 | notcommitted = 0; | |
1335 | incr = (blkcnt > XFS_QM_MAX_DQCLUSTER_LOGSZ) ? | |
1336 | XFS_QM_MAX_DQCLUSTER_LOGSZ : blkcnt; | |
c8ad20ff NS |
1337 | type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : |
1338 | (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); | |
1da177e4 LT |
1339 | error = 0; |
1340 | ||
1341 | /* | |
1342 | * Blkcnt arg can be a very big number, and might even be | |
1343 | * larger than the log itself. So, we have to break it up into | |
1344 | * manageable-sized transactions. | |
1345 | * Note that we don't start a permanent transaction here; we might | |
1346 | * not be able to get a log reservation for the whole thing up front, | |
1347 | * and we don't really care to either, because we just discard | |
1348 | * everything if we were to crash in the middle of this loop. | |
1349 | */ | |
1350 | while (blkcnt--) { | |
1351 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1352 | XFS_FSB_TO_DADDR(mp, bno), | |
8a7b8a89 | 1353 | mp->m_quotainfo->qi_dqchunklen, 0, &bp); |
1da177e4 LT |
1354 | if (error) |
1355 | break; | |
1356 | ||
5b139738 | 1357 | xfs_qm_reset_dqcounts(mp, bp, firstid, type); |
1da177e4 LT |
1358 | xfs_bdwrite(mp, bp); |
1359 | /* | |
1360 | * goto the next block. | |
1361 | */ | |
1362 | bno++; | |
8a7b8a89 | 1363 | firstid += mp->m_quotainfo->qi_dqperchunk; |
1da177e4 | 1364 | } |
014c2544 | 1365 | return error; |
1da177e4 LT |
1366 | } |
1367 | ||
1368 | /* | |
c8ad20ff | 1369 | * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a |
1da177e4 LT |
1370 | * caller supplied function for every chunk of dquots that we find. |
1371 | */ | |
1372 | STATIC int | |
1373 | xfs_qm_dqiterate( | |
1374 | xfs_mount_t *mp, | |
1375 | xfs_inode_t *qip, | |
1376 | uint flags) | |
1377 | { | |
1378 | xfs_bmbt_irec_t *map; | |
1379 | int i, nmaps; /* number of map entries */ | |
1380 | int error; /* return value */ | |
1381 | xfs_fileoff_t lblkno; | |
1382 | xfs_filblks_t maxlblkcnt; | |
1383 | xfs_dqid_t firstid; | |
1384 | xfs_fsblock_t rablkno; | |
1385 | xfs_filblks_t rablkcnt; | |
1386 | ||
1387 | error = 0; | |
1388 | /* | |
c41564b5 | 1389 | * This looks racy, but we can't keep an inode lock across a |
1da177e4 LT |
1390 | * trans_reserve. But, this gets called during quotacheck, and that |
1391 | * happens only at mount time which is single threaded. | |
1392 | */ | |
1393 | if (qip->i_d.di_nblocks == 0) | |
014c2544 | 1394 | return 0; |
1da177e4 LT |
1395 | |
1396 | map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); | |
1397 | ||
1398 | lblkno = 0; | |
1399 | maxlblkcnt = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp)); | |
1400 | do { | |
1401 | nmaps = XFS_DQITER_MAP_SIZE; | |
1402 | /* | |
1403 | * We aren't changing the inode itself. Just changing | |
1404 | * some of its data. No new blocks are added here, and | |
1405 | * the inode is never added to the transaction. | |
1406 | */ | |
1407 | xfs_ilock(qip, XFS_ILOCK_SHARED); | |
1408 | error = xfs_bmapi(NULL, qip, lblkno, | |
1409 | maxlblkcnt - lblkno, | |
1410 | XFS_BMAPI_METADATA, | |
1411 | NULL, | |
b4e9181e | 1412 | 0, map, &nmaps, NULL); |
1da177e4 LT |
1413 | xfs_iunlock(qip, XFS_ILOCK_SHARED); |
1414 | if (error) | |
1415 | break; | |
1416 | ||
1417 | ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); | |
1418 | for (i = 0; i < nmaps; i++) { | |
1419 | ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); | |
1420 | ASSERT(map[i].br_blockcount); | |
1421 | ||
1422 | ||
1423 | lblkno += map[i].br_blockcount; | |
1424 | ||
1425 | if (map[i].br_startblock == HOLESTARTBLOCK) | |
1426 | continue; | |
1427 | ||
1428 | firstid = (xfs_dqid_t) map[i].br_startoff * | |
8a7b8a89 | 1429 | mp->m_quotainfo->qi_dqperchunk; |
1da177e4 LT |
1430 | /* |
1431 | * Do a read-ahead on the next extent. | |
1432 | */ | |
1433 | if ((i+1 < nmaps) && | |
1434 | (map[i+1].br_startblock != HOLESTARTBLOCK)) { | |
1435 | rablkcnt = map[i+1].br_blockcount; | |
1436 | rablkno = map[i+1].br_startblock; | |
1437 | while (rablkcnt--) { | |
1438 | xfs_baread(mp->m_ddev_targp, | |
1439 | XFS_FSB_TO_DADDR(mp, rablkno), | |
8a7b8a89 | 1440 | mp->m_quotainfo->qi_dqchunklen); |
1da177e4 LT |
1441 | rablkno++; |
1442 | } | |
1443 | } | |
1444 | /* | |
1445 | * Iterate thru all the blks in the extent and | |
1446 | * reset the counters of all the dquots inside them. | |
1447 | */ | |
1448 | if ((error = xfs_qm_dqiter_bufs(mp, | |
1449 | firstid, | |
1450 | map[i].br_startblock, | |
1451 | map[i].br_blockcount, | |
1452 | flags))) { | |
1453 | break; | |
1454 | } | |
1455 | } | |
1456 | ||
1457 | if (error) | |
1458 | break; | |
1459 | } while (nmaps > 0); | |
1460 | ||
f0e2d93c | 1461 | kmem_free(map); |
1da177e4 | 1462 | |
014c2544 | 1463 | return error; |
1da177e4 LT |
1464 | } |
1465 | ||
1466 | /* | |
1467 | * Called by dqusage_adjust in doing a quotacheck. | |
52fda114 CH |
1468 | * |
1469 | * Given the inode, and a dquot id this updates both the incore dqout as well | |
1470 | * as the buffer copy. This is so that once the quotacheck is done, we can | |
1471 | * just log all the buffers, as opposed to logging numerous updates to | |
1472 | * individual dquots. | |
1da177e4 | 1473 | */ |
52fda114 | 1474 | STATIC int |
1da177e4 | 1475 | xfs_qm_quotacheck_dqadjust( |
52fda114 CH |
1476 | struct xfs_inode *ip, |
1477 | xfs_dqid_t id, | |
1478 | uint type, | |
1da177e4 LT |
1479 | xfs_qcnt_t nblks, |
1480 | xfs_qcnt_t rtblks) | |
1481 | { | |
52fda114 CH |
1482 | struct xfs_mount *mp = ip->i_mount; |
1483 | struct xfs_dquot *dqp; | |
1484 | int error; | |
1485 | ||
1486 | error = xfs_qm_dqget(mp, ip, id, type, | |
1487 | XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp); | |
1488 | if (error) { | |
1489 | /* | |
1490 | * Shouldn't be able to turn off quotas here. | |
1491 | */ | |
1492 | ASSERT(error != ESRCH); | |
1493 | ASSERT(error != ENOENT); | |
1494 | return error; | |
1495 | } | |
0b1b213f CH |
1496 | |
1497 | trace_xfs_dqadjust(dqp); | |
1498 | ||
1da177e4 LT |
1499 | /* |
1500 | * Adjust the inode count and the block count to reflect this inode's | |
1501 | * resource usage. | |
1502 | */ | |
413d57c9 | 1503 | be64_add_cpu(&dqp->q_core.d_icount, 1); |
1da177e4 LT |
1504 | dqp->q_res_icount++; |
1505 | if (nblks) { | |
413d57c9 | 1506 | be64_add_cpu(&dqp->q_core.d_bcount, nblks); |
1da177e4 LT |
1507 | dqp->q_res_bcount += nblks; |
1508 | } | |
1509 | if (rtblks) { | |
413d57c9 | 1510 | be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); |
1da177e4 LT |
1511 | dqp->q_res_rtbcount += rtblks; |
1512 | } | |
1513 | ||
1514 | /* | |
1515 | * Set default limits, adjust timers (since we changed usages) | |
191f8488 CH |
1516 | * |
1517 | * There are no timers for the default values set in the root dquot. | |
1da177e4 | 1518 | */ |
191f8488 | 1519 | if (dqp->q_core.d_id) { |
52fda114 CH |
1520 | xfs_qm_adjust_dqlimits(mp, &dqp->q_core); |
1521 | xfs_qm_adjust_dqtimers(mp, &dqp->q_core); | |
1da177e4 LT |
1522 | } |
1523 | ||
1524 | dqp->dq_flags |= XFS_DQ_DIRTY; | |
52fda114 CH |
1525 | xfs_qm_dqput(dqp); |
1526 | return 0; | |
1da177e4 LT |
1527 | } |
1528 | ||
1529 | STATIC int | |
1530 | xfs_qm_get_rtblks( | |
1531 | xfs_inode_t *ip, | |
1532 | xfs_qcnt_t *O_rtblks) | |
1533 | { | |
1534 | xfs_filblks_t rtblks; /* total rt blks */ | |
4eea22f0 | 1535 | xfs_extnum_t idx; /* extent record index */ |
1da177e4 LT |
1536 | xfs_ifork_t *ifp; /* inode fork pointer */ |
1537 | xfs_extnum_t nextents; /* number of extent entries */ | |
1da177e4 LT |
1538 | int error; |
1539 | ||
1540 | ASSERT(XFS_IS_REALTIME_INODE(ip)); | |
1541 | ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); | |
1542 | if (!(ifp->if_flags & XFS_IFEXTENTS)) { | |
1543 | if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) | |
014c2544 | 1544 | return error; |
1da177e4 LT |
1545 | } |
1546 | rtblks = 0; | |
4eea22f0 | 1547 | nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); |
a6f64d4a CH |
1548 | for (idx = 0; idx < nextents; idx++) |
1549 | rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); | |
1da177e4 | 1550 | *O_rtblks = (xfs_qcnt_t)rtblks; |
014c2544 | 1551 | return 0; |
1da177e4 LT |
1552 | } |
1553 | ||
1554 | /* | |
1555 | * callback routine supplied to bulkstat(). Given an inumber, find its | |
1556 | * dquots and update them to account for resources taken by that inode. | |
1557 | */ | |
1558 | /* ARGSUSED */ | |
1559 | STATIC int | |
1560 | xfs_qm_dqusage_adjust( | |
1561 | xfs_mount_t *mp, /* mount point for filesystem */ | |
1562 | xfs_ino_t ino, /* inode number to get data for */ | |
1563 | void __user *buffer, /* not used */ | |
1564 | int ubsize, /* not used */ | |
1da177e4 | 1565 | int *ubused, /* not used */ |
1da177e4 LT |
1566 | int *res) /* result code value */ |
1567 | { | |
1568 | xfs_inode_t *ip; | |
52fda114 | 1569 | xfs_qcnt_t nblks, rtblks = 0; |
1da177e4 LT |
1570 | int error; |
1571 | ||
1572 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
1573 | ||
1574 | /* | |
1575 | * rootino must have its resources accounted for, not so with the quota | |
1576 | * inodes. | |
1577 | */ | |
1578 | if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) { | |
1579 | *res = BULKSTAT_RV_NOTHING; | |
1580 | return XFS_ERROR(EINVAL); | |
1581 | } | |
1582 | ||
1583 | /* | |
1584 | * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget | |
1585 | * interface expects the inode to be exclusively locked because that's | |
1586 | * the case in all other instances. It's OK that we do this because | |
1587 | * quotacheck is done only at mount time. | |
1588 | */ | |
52fda114 CH |
1589 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip); |
1590 | if (error) { | |
1da177e4 | 1591 | *res = BULKSTAT_RV_NOTHING; |
014c2544 | 1592 | return error; |
1da177e4 LT |
1593 | } |
1594 | ||
52fda114 | 1595 | ASSERT(ip->i_delayed_blks == 0); |
1da177e4 | 1596 | |
52fda114 | 1597 | if (XFS_IS_REALTIME_INODE(ip)) { |
1da177e4 LT |
1598 | /* |
1599 | * Walk thru the extent list and count the realtime blocks. | |
1600 | */ | |
52fda114 CH |
1601 | error = xfs_qm_get_rtblks(ip, &rtblks); |
1602 | if (error) | |
1603 | goto error0; | |
1da177e4 | 1604 | } |
1da177e4 | 1605 | |
52fda114 | 1606 | nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; |
1da177e4 LT |
1607 | |
1608 | /* | |
1609 | * Add the (disk blocks and inode) resources occupied by this | |
1610 | * inode to its dquots. We do this adjustment in the incore dquot, | |
1611 | * and also copy the changes to its buffer. | |
1612 | * We don't care about putting these changes in a transaction | |
1613 | * envelope because if we crash in the middle of a 'quotacheck' | |
1614 | * we have to start from the beginning anyway. | |
1615 | * Once we're done, we'll log all the dquot bufs. | |
1616 | * | |
c41564b5 | 1617 | * The *QUOTA_ON checks below may look pretty racy, but quotachecks |
1da177e4 LT |
1618 | * and quotaoffs don't race. (Quotachecks happen at mount time only). |
1619 | */ | |
1620 | if (XFS_IS_UQUOTA_ON(mp)) { | |
52fda114 CH |
1621 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid, |
1622 | XFS_DQ_USER, nblks, rtblks); | |
1623 | if (error) | |
1624 | goto error0; | |
1da177e4 | 1625 | } |
52fda114 CH |
1626 | |
1627 | if (XFS_IS_GQUOTA_ON(mp)) { | |
1628 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid, | |
1629 | XFS_DQ_GROUP, nblks, rtblks); | |
1630 | if (error) | |
1631 | goto error0; | |
1da177e4 | 1632 | } |
1da177e4 | 1633 | |
52fda114 CH |
1634 | if (XFS_IS_PQUOTA_ON(mp)) { |
1635 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_projid, | |
1636 | XFS_DQ_PROJ, nblks, rtblks); | |
1637 | if (error) | |
1638 | goto error0; | |
1639 | } | |
1640 | ||
1641 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1642 | IRELE(ip); | |
1da177e4 | 1643 | *res = BULKSTAT_RV_DIDONE; |
014c2544 | 1644 | return 0; |
52fda114 CH |
1645 | |
1646 | error0: | |
1647 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1648 | IRELE(ip); | |
1649 | *res = BULKSTAT_RV_GIVEUP; | |
1650 | return error; | |
1da177e4 LT |
1651 | } |
1652 | ||
1653 | /* | |
1654 | * Walk thru all the filesystem inodes and construct a consistent view | |
1655 | * of the disk quota world. If the quotacheck fails, disable quotas. | |
1656 | */ | |
1657 | int | |
1658 | xfs_qm_quotacheck( | |
1659 | xfs_mount_t *mp) | |
1660 | { | |
1661 | int done, count, error; | |
1662 | xfs_ino_t lastino; | |
1663 | size_t structsz; | |
1664 | xfs_inode_t *uip, *gip; | |
1665 | uint flags; | |
1666 | ||
1667 | count = INT_MAX; | |
1668 | structsz = 1; | |
1669 | lastino = 0; | |
1670 | flags = 0; | |
1671 | ||
8a7b8a89 | 1672 | ASSERT(mp->m_quotainfo->qi_uquotaip || mp->m_quotainfo->qi_gquotaip); |
1da177e4 LT |
1673 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1674 | ||
1675 | /* | |
1676 | * There should be no cached dquots. The (simplistic) quotacheck | |
1677 | * algorithm doesn't like that. | |
1678 | */ | |
3a25404b | 1679 | ASSERT(list_empty(&mp->m_quotainfo->qi_dqlist)); |
1da177e4 LT |
1680 | |
1681 | cmn_err(CE_NOTE, "XFS quotacheck %s: Please wait.", mp->m_fsname); | |
1682 | ||
1683 | /* | |
c8ad20ff | 1684 | * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset |
1da177e4 LT |
1685 | * their counters to zero. We need a clean slate. |
1686 | * We don't log our changes till later. | |
1687 | */ | |
8a7b8a89 CH |
1688 | uip = mp->m_quotainfo->qi_uquotaip; |
1689 | if (uip) { | |
1690 | error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA); | |
1691 | if (error) | |
1da177e4 LT |
1692 | goto error_return; |
1693 | flags |= XFS_UQUOTA_CHKD; | |
1694 | } | |
1695 | ||
8a7b8a89 CH |
1696 | gip = mp->m_quotainfo->qi_gquotaip; |
1697 | if (gip) { | |
1698 | error = xfs_qm_dqiterate(mp, gip, XFS_IS_GQUOTA_ON(mp) ? | |
1699 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1700 | if (error) | |
1da177e4 | 1701 | goto error_return; |
c8ad20ff | 1702 | flags |= XFS_OQUOTA_CHKD; |
1da177e4 LT |
1703 | } |
1704 | ||
1705 | do { | |
1706 | /* | |
1707 | * Iterate thru all the inodes in the file system, | |
1708 | * adjusting the corresponding dquot counters in core. | |
1709 | */ | |
7dce11db CH |
1710 | error = xfs_bulkstat(mp, &lastino, &count, |
1711 | xfs_qm_dqusage_adjust, | |
1712 | structsz, NULL, &done); | |
1713 | if (error) | |
1da177e4 LT |
1714 | break; |
1715 | ||
7dce11db | 1716 | } while (!done); |
1da177e4 | 1717 | |
4b8879df DC |
1718 | /* |
1719 | * We've made all the changes that we need to make incore. | |
1720 | * Flush them down to disk buffers if everything was updated | |
1721 | * successfully. | |
1722 | */ | |
1723 | if (!error) | |
20026d92 | 1724 | error = xfs_qm_dqflush_all(mp, 0); |
4b8879df | 1725 | |
1da177e4 LT |
1726 | /* |
1727 | * We can get this error if we couldn't do a dquot allocation inside | |
1728 | * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the | |
1729 | * dirty dquots that might be cached, we just want to get rid of them | |
1730 | * and turn quotaoff. The dquots won't be attached to any of the inodes | |
1731 | * at this point (because we intentionally didn't in dqget_noattach). | |
1732 | */ | |
1733 | if (error) { | |
8112e9dc | 1734 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 LT |
1735 | goto error_return; |
1736 | } | |
1da177e4 LT |
1737 | |
1738 | /* | |
1739 | * We didn't log anything, because if we crashed, we'll have to | |
1740 | * start the quotacheck from scratch anyway. However, we must make | |
1741 | * sure that our dquot changes are secure before we put the | |
1742 | * quotacheck'd stamp on the superblock. So, here we do a synchronous | |
1743 | * flush. | |
1744 | */ | |
1745 | XFS_bflush(mp->m_ddev_targp); | |
1746 | ||
1747 | /* | |
1748 | * If one type of quotas is off, then it will lose its | |
1749 | * quotachecked status, since we won't be doing accounting for | |
1750 | * that type anymore. | |
1751 | */ | |
c8ad20ff | 1752 | mp->m_qflags &= ~(XFS_OQUOTA_CHKD | XFS_UQUOTA_CHKD); |
1da177e4 LT |
1753 | mp->m_qflags |= flags; |
1754 | ||
3a25404b | 1755 | xfs_qm_dquot_list_print(mp); |
1da177e4 LT |
1756 | |
1757 | error_return: | |
1758 | if (error) { | |
1759 | cmn_err(CE_WARN, "XFS quotacheck %s: Unsuccessful (Error %d): " | |
1760 | "Disabling quotas.", | |
1761 | mp->m_fsname, error); | |
1762 | /* | |
1763 | * We must turn off quotas. | |
1764 | */ | |
1765 | ASSERT(mp->m_quotainfo != NULL); | |
1766 | ASSERT(xfs_Gqm != NULL); | |
1767 | xfs_qm_destroy_quotainfo(mp); | |
31d5577b DC |
1768 | if (xfs_mount_reset_sbqflags(mp)) { |
1769 | cmn_err(CE_WARN, "XFS quotacheck %s: " | |
1770 | "Failed to reset quota flags.", mp->m_fsname); | |
1771 | } | |
1da177e4 LT |
1772 | } else { |
1773 | cmn_err(CE_NOTE, "XFS quotacheck %s: Done.", mp->m_fsname); | |
1774 | } | |
1775 | return (error); | |
1776 | } | |
1777 | ||
1778 | /* | |
1779 | * This is called after the superblock has been read in and we're ready to | |
1780 | * iget the quota inodes. | |
1781 | */ | |
1782 | STATIC int | |
1783 | xfs_qm_init_quotainos( | |
1784 | xfs_mount_t *mp) | |
1785 | { | |
1786 | xfs_inode_t *uip, *gip; | |
1787 | int error; | |
1788 | __int64_t sbflags; | |
1789 | uint flags; | |
1790 | ||
1791 | ASSERT(mp->m_quotainfo); | |
1792 | uip = gip = NULL; | |
1793 | sbflags = 0; | |
1794 | flags = 0; | |
1795 | ||
1796 | /* | |
1797 | * Get the uquota and gquota inodes | |
1798 | */ | |
62118709 | 1799 | if (xfs_sb_version_hasquota(&mp->m_sb)) { |
1da177e4 LT |
1800 | if (XFS_IS_UQUOTA_ON(mp) && |
1801 | mp->m_sb.sb_uquotino != NULLFSINO) { | |
1802 | ASSERT(mp->m_sb.sb_uquotino > 0); | |
1803 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, | |
7b6259e7 | 1804 | 0, 0, &uip))) |
1da177e4 LT |
1805 | return XFS_ERROR(error); |
1806 | } | |
c8ad20ff | 1807 | if (XFS_IS_OQUOTA_ON(mp) && |
1da177e4 LT |
1808 | mp->m_sb.sb_gquotino != NULLFSINO) { |
1809 | ASSERT(mp->m_sb.sb_gquotino > 0); | |
1810 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, | |
7b6259e7 | 1811 | 0, 0, &gip))) { |
1da177e4 | 1812 | if (uip) |
43355099 | 1813 | IRELE(uip); |
1da177e4 LT |
1814 | return XFS_ERROR(error); |
1815 | } | |
1816 | } | |
1817 | } else { | |
1818 | flags |= XFS_QMOPT_SBVERSION; | |
1819 | sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1820 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS); | |
1821 | } | |
1822 | ||
1823 | /* | |
1824 | * Create the two inodes, if they don't exist already. The changes | |
1825 | * made above will get added to a transaction and logged in one of | |
1826 | * the qino_alloc calls below. If the device is readonly, | |
1827 | * temporarily switch to read-write to do this. | |
1828 | */ | |
1829 | if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { | |
1830 | if ((error = xfs_qm_qino_alloc(mp, &uip, | |
1831 | sbflags | XFS_SB_UQUOTINO, | |
1832 | flags | XFS_QMOPT_UQUOTA))) | |
1833 | return XFS_ERROR(error); | |
1834 | ||
1835 | flags &= ~XFS_QMOPT_SBVERSION; | |
1836 | } | |
c8ad20ff NS |
1837 | if (XFS_IS_OQUOTA_ON(mp) && gip == NULL) { |
1838 | flags |= (XFS_IS_GQUOTA_ON(mp) ? | |
1839 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1840 | error = xfs_qm_qino_alloc(mp, &gip, | |
1841 | sbflags | XFS_SB_GQUOTINO, flags); | |
1842 | if (error) { | |
1da177e4 | 1843 | if (uip) |
43355099 | 1844 | IRELE(uip); |
1da177e4 LT |
1845 | |
1846 | return XFS_ERROR(error); | |
1847 | } | |
1848 | } | |
1849 | ||
8a7b8a89 CH |
1850 | mp->m_quotainfo->qi_uquotaip = uip; |
1851 | mp->m_quotainfo->qi_gquotaip = gip; | |
1da177e4 | 1852 | |
014c2544 | 1853 | return 0; |
1da177e4 LT |
1854 | } |
1855 | ||
1856 | ||
368e1361 | 1857 | |
1da177e4 | 1858 | /* |
368e1361 DC |
1859 | * Just pop the least recently used dquot off the freelist and |
1860 | * recycle it. The returned dquot is locked. | |
1da177e4 | 1861 | */ |
368e1361 DC |
1862 | STATIC xfs_dquot_t * |
1863 | xfs_qm_dqreclaim_one(void) | |
1da177e4 | 1864 | { |
368e1361 DC |
1865 | xfs_dquot_t *dqpout; |
1866 | xfs_dquot_t *dqp; | |
1da177e4 | 1867 | int restarts; |
1da177e4 | 1868 | |
1da177e4 | 1869 | restarts = 0; |
368e1361 | 1870 | dqpout = NULL; |
1da177e4 | 1871 | |
368e1361 DC |
1872 | /* lockorder: hashchainlock, freelistlock, mplistlock, dqlock, dqflock */ |
1873 | startagain: | |
3a8406f6 | 1874 | mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 | 1875 | |
3a8406f6 | 1876 | list_for_each_entry(dqp, &xfs_Gqm->qm_dqfrlist, q_freelist) { |
3a25404b | 1877 | struct xfs_mount *mp = dqp->q_mount; |
1da177e4 LT |
1878 | xfs_dqlock(dqp); |
1879 | ||
1880 | /* | |
1881 | * We are racing with dqlookup here. Naturally we don't | |
368e1361 DC |
1882 | * want to reclaim a dquot that lookup wants. We release the |
1883 | * freelist lock and start over, so that lookup will grab | |
1884 | * both the dquot and the freelistlock. | |
1da177e4 LT |
1885 | */ |
1886 | if (dqp->dq_flags & XFS_DQ_WANT) { | |
368e1361 DC |
1887 | ASSERT(! (dqp->dq_flags & XFS_DQ_INACTIVE)); |
1888 | ||
1889 | trace_xfs_dqreclaim_want(dqp); | |
1890 | ||
1da177e4 | 1891 | xfs_dqunlock(dqp); |
3a8406f6 | 1892 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 | 1893 | if (++restarts >= XFS_QM_RECLAIM_MAX_RESTARTS) |
368e1361 | 1894 | return NULL; |
1da177e4 | 1895 | XQM_STATS_INC(xqmstats.xs_qm_dqwants); |
368e1361 | 1896 | goto startagain; |
1da177e4 LT |
1897 | } |
1898 | ||
1899 | /* | |
1900 | * If the dquot is inactive, we are assured that it is | |
1901 | * not on the mplist or the hashlist, and that makes our | |
1902 | * life easier. | |
1903 | */ | |
1904 | if (dqp->dq_flags & XFS_DQ_INACTIVE) { | |
3a25404b | 1905 | ASSERT(mp == NULL); |
1da177e4 | 1906 | ASSERT(! XFS_DQ_IS_DIRTY(dqp)); |
e6a81f13 | 1907 | ASSERT(list_empty(&dqp->q_hashlist)); |
3a25404b | 1908 | ASSERT(list_empty(&dqp->q_mplist)); |
3a8406f6 DC |
1909 | list_del_init(&dqp->q_freelist); |
1910 | xfs_Gqm->qm_dqfrlist_cnt--; | |
368e1361 DC |
1911 | xfs_dqunlock(dqp); |
1912 | dqpout = dqp; | |
1da177e4 | 1913 | XQM_STATS_INC(xqmstats.xs_qm_dqinact_reclaims); |
368e1361 | 1914 | break; |
1da177e4 LT |
1915 | } |
1916 | ||
368e1361 | 1917 | ASSERT(dqp->q_hash); |
3a25404b | 1918 | ASSERT(!list_empty(&dqp->q_mplist)); |
368e1361 | 1919 | |
1da177e4 LT |
1920 | /* |
1921 | * Try to grab the flush lock. If this dquot is in the process of | |
1922 | * getting flushed to disk, we don't want to reclaim it. | |
1923 | */ | |
e1f49cf2 | 1924 | if (!xfs_dqflock_nowait(dqp)) { |
1da177e4 | 1925 | xfs_dqunlock(dqp); |
1da177e4 LT |
1926 | continue; |
1927 | } | |
1928 | ||
1929 | /* | |
1930 | * We have the flush lock so we know that this is not in the | |
1931 | * process of being flushed. So, if this is dirty, flush it | |
1932 | * DELWRI so that we don't get a freelist infested with | |
1933 | * dirty dquots. | |
1934 | */ | |
1935 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
3c56836f | 1936 | int error; |
0b1b213f | 1937 | |
368e1361 | 1938 | trace_xfs_dqreclaim_dirty(dqp); |
0b1b213f | 1939 | |
1da177e4 LT |
1940 | /* |
1941 | * We flush it delayed write, so don't bother | |
368e1361 | 1942 | * releasing the freelist lock. |
1da177e4 | 1943 | */ |
20026d92 | 1944 | error = xfs_qm_dqflush(dqp, 0); |
3c56836f | 1945 | if (error) { |
3a25404b | 1946 | xfs_fs_cmn_err(CE_WARN, mp, |
368e1361 | 1947 | "xfs_qm_dqreclaim: dquot %p flush failed", dqp); |
3c56836f | 1948 | } |
1da177e4 | 1949 | xfs_dqunlock(dqp); /* dqflush unlocks dqflock */ |
1da177e4 LT |
1950 | continue; |
1951 | } | |
368e1361 | 1952 | |
1da177e4 LT |
1953 | /* |
1954 | * We're trying to get the hashlock out of order. This races | |
1955 | * with dqlookup; so, we giveup and goto the next dquot if | |
1956 | * we couldn't get the hashlock. This way, we won't starve | |
1957 | * a dqlookup process that holds the hashlock that is | |
1958 | * waiting for the freelist lock. | |
1959 | */ | |
c9a192dc | 1960 | if (!mutex_trylock(&dqp->q_hash->qh_lock)) { |
368e1361 DC |
1961 | restarts++; |
1962 | goto dqfunlock; | |
1da177e4 | 1963 | } |
368e1361 | 1964 | |
1da177e4 LT |
1965 | /* |
1966 | * This races with dquot allocation code as well as dqflush_all | |
1967 | * and reclaim code. So, if we failed to grab the mplist lock, | |
1968 | * giveup everything and start over. | |
1969 | */ | |
3a25404b | 1970 | if (!mutex_trylock(&mp->m_quotainfo->qi_dqlist_lock)) { |
368e1361 DC |
1971 | restarts++; |
1972 | mutex_unlock(&dqp->q_hash->qh_lock); | |
1da177e4 LT |
1973 | xfs_dqfunlock(dqp); |
1974 | xfs_dqunlock(dqp); | |
3a8406f6 | 1975 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
368e1361 DC |
1976 | if (restarts++ >= XFS_QM_RECLAIM_MAX_RESTARTS) |
1977 | return NULL; | |
1978 | goto startagain; | |
1da177e4 | 1979 | } |
0b1b213f | 1980 | |
1da177e4 | 1981 | ASSERT(dqp->q_nrefs == 0); |
3a25404b DC |
1982 | list_del_init(&dqp->q_mplist); |
1983 | mp->m_quotainfo->qi_dquots--; | |
1984 | mp->m_quotainfo->qi_dqreclaims++; | |
e6a81f13 DC |
1985 | list_del_init(&dqp->q_hashlist); |
1986 | dqp->q_hash->qh_version++; | |
3a8406f6 DC |
1987 | list_del_init(&dqp->q_freelist); |
1988 | xfs_Gqm->qm_dqfrlist_cnt--; | |
368e1361 DC |
1989 | dqpout = dqp; |
1990 | mutex_unlock(&mp->m_quotainfo->qi_dqlist_lock); | |
1991 | mutex_unlock(&dqp->q_hash->qh_lock); | |
1992 | dqfunlock: | |
1993 | xfs_dqfunlock(dqp); | |
1da177e4 | 1994 | xfs_dqunlock(dqp); |
368e1361 DC |
1995 | if (dqpout) |
1996 | break; | |
1997 | if (restarts >= XFS_QM_RECLAIM_MAX_RESTARTS) | |
1998 | return NULL; | |
1da177e4 | 1999 | } |
3a8406f6 | 2000 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
368e1361 | 2001 | return dqpout; |
1da177e4 LT |
2002 | } |
2003 | ||
368e1361 DC |
2004 | /* |
2005 | * Traverse the freelist of dquots and attempt to reclaim a maximum of | |
2006 | * 'howmany' dquots. This operation races with dqlookup(), and attempts to | |
2007 | * favor the lookup function ... | |
2008 | */ | |
2009 | STATIC int | |
2010 | xfs_qm_shake_freelist( | |
2011 | int howmany) | |
2012 | { | |
2013 | int nreclaimed = 0; | |
2014 | xfs_dquot_t *dqp; | |
2015 | ||
2016 | if (howmany <= 0) | |
2017 | return 0; | |
2018 | ||
2019 | while (nreclaimed < howmany) { | |
2020 | dqp = xfs_qm_dqreclaim_one(); | |
2021 | if (!dqp) | |
2022 | return nreclaimed; | |
2023 | xfs_qm_dqdestroy(dqp); | |
2024 | nreclaimed++; | |
2025 | } | |
2026 | return nreclaimed; | |
2027 | } | |
1da177e4 LT |
2028 | |
2029 | /* | |
2030 | * The kmem_shake interface is invoked when memory is running low. | |
2031 | */ | |
2032 | /* ARGSUSED */ | |
2033 | STATIC int | |
7f8275d0 DC |
2034 | xfs_qm_shake( |
2035 | struct shrinker *shrink, | |
2036 | int nr_to_scan, | |
2037 | gfp_t gfp_mask) | |
1da177e4 LT |
2038 | { |
2039 | int ndqused, nfree, n; | |
2040 | ||
2041 | if (!kmem_shake_allow(gfp_mask)) | |
014c2544 | 2042 | return 0; |
1da177e4 | 2043 | if (!xfs_Gqm) |
014c2544 | 2044 | return 0; |
1da177e4 | 2045 | |
3a8406f6 | 2046 | nfree = xfs_Gqm->qm_dqfrlist_cnt; /* free dquots */ |
1da177e4 LT |
2047 | /* incore dquots in all f/s's */ |
2048 | ndqused = atomic_read(&xfs_Gqm->qm_totaldquots) - nfree; | |
2049 | ||
2050 | ASSERT(ndqused >= 0); | |
2051 | ||
2052 | if (nfree <= ndqused && nfree < ndquot) | |
014c2544 | 2053 | return 0; |
1da177e4 LT |
2054 | |
2055 | ndqused *= xfs_Gqm->qm_dqfree_ratio; /* target # of free dquots */ | |
2056 | n = nfree - ndqused - ndquot; /* # over target */ | |
2057 | ||
2058 | return xfs_qm_shake_freelist(MAX(nfree, n)); | |
2059 | } | |
2060 | ||
2061 | ||
1da177e4 LT |
2062 | /*------------------------------------------------------------------*/ |
2063 | ||
2064 | /* | |
2065 | * Return a new incore dquot. Depending on the number of | |
2066 | * dquots in the system, we either allocate a new one on the kernel heap, | |
2067 | * or reclaim a free one. | |
2068 | * Return value is B_TRUE if we allocated a new dquot, B_FALSE if we managed | |
2069 | * to reclaim an existing one from the freelist. | |
2070 | */ | |
2071 | boolean_t | |
2072 | xfs_qm_dqalloc_incore( | |
2073 | xfs_dquot_t **O_dqpp) | |
2074 | { | |
2075 | xfs_dquot_t *dqp; | |
2076 | ||
2077 | /* | |
2078 | * Check against high water mark to see if we want to pop | |
2079 | * a nincompoop dquot off the freelist. | |
2080 | */ | |
2081 | if (atomic_read(&xfs_Gqm->qm_totaldquots) >= ndquot) { | |
2082 | /* | |
2083 | * Try to recycle a dquot from the freelist. | |
2084 | */ | |
2085 | if ((dqp = xfs_qm_dqreclaim_one())) { | |
2086 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaims); | |
2087 | /* | |
2088 | * Just zero the core here. The rest will get | |
2089 | * reinitialized by caller. XXX we shouldn't even | |
2090 | * do this zero ... | |
2091 | */ | |
2092 | memset(&dqp->q_core, 0, sizeof(dqp->q_core)); | |
2093 | *O_dqpp = dqp; | |
014c2544 | 2094 | return B_FALSE; |
1da177e4 LT |
2095 | } |
2096 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaim_misses); | |
2097 | } | |
2098 | ||
2099 | /* | |
2100 | * Allocate a brand new dquot on the kernel heap and return it | |
2101 | * to the caller to initialize. | |
2102 | */ | |
2103 | ASSERT(xfs_Gqm->qm_dqzone != NULL); | |
2104 | *O_dqpp = kmem_zone_zalloc(xfs_Gqm->qm_dqzone, KM_SLEEP); | |
2105 | atomic_inc(&xfs_Gqm->qm_totaldquots); | |
2106 | ||
014c2544 | 2107 | return B_TRUE; |
1da177e4 LT |
2108 | } |
2109 | ||
2110 | ||
2111 | /* | |
2112 | * Start a transaction and write the incore superblock changes to | |
2113 | * disk. flags parameter indicates which fields have changed. | |
2114 | */ | |
2115 | int | |
2116 | xfs_qm_write_sb_changes( | |
2117 | xfs_mount_t *mp, | |
2118 | __int64_t flags) | |
2119 | { | |
2120 | xfs_trans_t *tp; | |
2121 | int error; | |
2122 | ||
2123 | #ifdef QUOTADEBUG | |
2124 | cmn_err(CE_NOTE, "Writing superblock quota changes :%s", mp->m_fsname); | |
2125 | #endif | |
2126 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); | |
2127 | if ((error = xfs_trans_reserve(tp, 0, | |
2128 | mp->m_sb.sb_sectsize + 128, 0, | |
2129 | 0, | |
2130 | XFS_DEFAULT_LOG_COUNT))) { | |
2131 | xfs_trans_cancel(tp, 0); | |
014c2544 | 2132 | return error; |
1da177e4 LT |
2133 | } |
2134 | ||
2135 | xfs_mod_sb(tp, flags); | |
e5720eec | 2136 | error = xfs_trans_commit(tp, 0); |
1da177e4 | 2137 | |
e5720eec | 2138 | return error; |
1da177e4 LT |
2139 | } |
2140 | ||
2141 | ||
2142 | /* --------------- utility functions for vnodeops ---------------- */ | |
2143 | ||
2144 | ||
2145 | /* | |
2146 | * Given an inode, a uid and gid (from cred_t) make sure that we have | |
2147 | * allocated relevant dquot(s) on disk, and that we won't exceed inode | |
2148 | * quotas by creating this file. | |
2149 | * This also attaches dquot(s) to the given inode after locking it, | |
2150 | * and returns the dquots corresponding to the uid and/or gid. | |
2151 | * | |
2152 | * in : inode (unlocked) | |
2153 | * out : udquot, gdquot with references taken and unlocked | |
2154 | */ | |
2155 | int | |
2156 | xfs_qm_vop_dqalloc( | |
7d095257 CH |
2157 | struct xfs_inode *ip, |
2158 | uid_t uid, | |
2159 | gid_t gid, | |
2160 | prid_t prid, | |
2161 | uint flags, | |
2162 | struct xfs_dquot **O_udqpp, | |
2163 | struct xfs_dquot **O_gdqpp) | |
1da177e4 | 2164 | { |
7d095257 CH |
2165 | struct xfs_mount *mp = ip->i_mount; |
2166 | struct xfs_dquot *uq, *gq; | |
2167 | int error; | |
2168 | uint lockflags; | |
1da177e4 | 2169 | |
7d095257 | 2170 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
1da177e4 LT |
2171 | return 0; |
2172 | ||
2173 | lockflags = XFS_ILOCK_EXCL; | |
2174 | xfs_ilock(ip, lockflags); | |
2175 | ||
bd186aa9 | 2176 | if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) |
1da177e4 LT |
2177 | gid = ip->i_d.di_gid; |
2178 | ||
2179 | /* | |
2180 | * Attach the dquot(s) to this inode, doing a dquot allocation | |
2181 | * if necessary. The dquot(s) will not be locked. | |
2182 | */ | |
2183 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
7d095257 CH |
2184 | error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); |
2185 | if (error) { | |
1da177e4 | 2186 | xfs_iunlock(ip, lockflags); |
014c2544 | 2187 | return error; |
1da177e4 LT |
2188 | } |
2189 | } | |
2190 | ||
2191 | uq = gq = NULL; | |
c8ad20ff | 2192 | if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { |
1da177e4 LT |
2193 | if (ip->i_d.di_uid != uid) { |
2194 | /* | |
2195 | * What we need is the dquot that has this uid, and | |
2196 | * if we send the inode to dqget, the uid of the inode | |
2197 | * takes priority over what's sent in the uid argument. | |
2198 | * We must unlock inode here before calling dqget if | |
2199 | * we're not sending the inode, because otherwise | |
2200 | * we'll deadlock by doing trans_reserve while | |
2201 | * holding ilock. | |
2202 | */ | |
2203 | xfs_iunlock(ip, lockflags); | |
2204 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t) uid, | |
2205 | XFS_DQ_USER, | |
2206 | XFS_QMOPT_DQALLOC | | |
2207 | XFS_QMOPT_DOWARN, | |
2208 | &uq))) { | |
2209 | ASSERT(error != ENOENT); | |
014c2544 | 2210 | return error; |
1da177e4 LT |
2211 | } |
2212 | /* | |
2213 | * Get the ilock in the right order. | |
2214 | */ | |
2215 | xfs_dqunlock(uq); | |
2216 | lockflags = XFS_ILOCK_SHARED; | |
2217 | xfs_ilock(ip, lockflags); | |
2218 | } else { | |
2219 | /* | |
2220 | * Take an extra reference, because we'll return | |
2221 | * this to caller | |
2222 | */ | |
2223 | ASSERT(ip->i_udquot); | |
2224 | uq = ip->i_udquot; | |
2225 | xfs_dqlock(uq); | |
2226 | XFS_DQHOLD(uq); | |
2227 | xfs_dqunlock(uq); | |
2228 | } | |
2229 | } | |
c8ad20ff | 2230 | if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { |
1da177e4 LT |
2231 | if (ip->i_d.di_gid != gid) { |
2232 | xfs_iunlock(ip, lockflags); | |
2233 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)gid, | |
2234 | XFS_DQ_GROUP, | |
2235 | XFS_QMOPT_DQALLOC | | |
2236 | XFS_QMOPT_DOWARN, | |
2237 | &gq))) { | |
2238 | if (uq) | |
2239 | xfs_qm_dqrele(uq); | |
2240 | ASSERT(error != ENOENT); | |
014c2544 | 2241 | return error; |
1da177e4 LT |
2242 | } |
2243 | xfs_dqunlock(gq); | |
2244 | lockflags = XFS_ILOCK_SHARED; | |
2245 | xfs_ilock(ip, lockflags); | |
2246 | } else { | |
2247 | ASSERT(ip->i_gdquot); | |
2248 | gq = ip->i_gdquot; | |
2249 | xfs_dqlock(gq); | |
2250 | XFS_DQHOLD(gq); | |
2251 | xfs_dqunlock(gq); | |
2252 | } | |
c8ad20ff NS |
2253 | } else if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { |
2254 | if (ip->i_d.di_projid != prid) { | |
2255 | xfs_iunlock(ip, lockflags); | |
2256 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, | |
2257 | XFS_DQ_PROJ, | |
2258 | XFS_QMOPT_DQALLOC | | |
2259 | XFS_QMOPT_DOWARN, | |
2260 | &gq))) { | |
2261 | if (uq) | |
2262 | xfs_qm_dqrele(uq); | |
2263 | ASSERT(error != ENOENT); | |
2264 | return (error); | |
2265 | } | |
2266 | xfs_dqunlock(gq); | |
2267 | lockflags = XFS_ILOCK_SHARED; | |
2268 | xfs_ilock(ip, lockflags); | |
2269 | } else { | |
2270 | ASSERT(ip->i_gdquot); | |
2271 | gq = ip->i_gdquot; | |
2272 | xfs_dqlock(gq); | |
2273 | XFS_DQHOLD(gq); | |
2274 | xfs_dqunlock(gq); | |
2275 | } | |
1da177e4 LT |
2276 | } |
2277 | if (uq) | |
0b1b213f | 2278 | trace_xfs_dquot_dqalloc(ip); |
1da177e4 LT |
2279 | |
2280 | xfs_iunlock(ip, lockflags); | |
2281 | if (O_udqpp) | |
2282 | *O_udqpp = uq; | |
2283 | else if (uq) | |
2284 | xfs_qm_dqrele(uq); | |
2285 | if (O_gdqpp) | |
2286 | *O_gdqpp = gq; | |
2287 | else if (gq) | |
2288 | xfs_qm_dqrele(gq); | |
014c2544 | 2289 | return 0; |
1da177e4 LT |
2290 | } |
2291 | ||
2292 | /* | |
2293 | * Actually transfer ownership, and do dquot modifications. | |
2294 | * These were already reserved. | |
2295 | */ | |
2296 | xfs_dquot_t * | |
2297 | xfs_qm_vop_chown( | |
2298 | xfs_trans_t *tp, | |
2299 | xfs_inode_t *ip, | |
2300 | xfs_dquot_t **IO_olddq, | |
2301 | xfs_dquot_t *newdq) | |
2302 | { | |
2303 | xfs_dquot_t *prevdq; | |
06d10dd9 NS |
2304 | uint bfield = XFS_IS_REALTIME_INODE(ip) ? |
2305 | XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; | |
2306 | ||
7d095257 | 2307 | |
579aa9ca | 2308 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
2309 | ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); |
2310 | ||
2311 | /* old dquot */ | |
2312 | prevdq = *IO_olddq; | |
2313 | ASSERT(prevdq); | |
2314 | ASSERT(prevdq != newdq); | |
2315 | ||
06d10dd9 NS |
2316 | xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); |
2317 | xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); | |
1da177e4 LT |
2318 | |
2319 | /* the sparkling new dquot */ | |
06d10dd9 NS |
2320 | xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); |
2321 | xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); | |
1da177e4 LT |
2322 | |
2323 | /* | |
2324 | * Take an extra reference, because the inode | |
2325 | * is going to keep this dquot pointer even | |
2326 | * after the trans_commit. | |
2327 | */ | |
2328 | xfs_dqlock(newdq); | |
2329 | XFS_DQHOLD(newdq); | |
2330 | xfs_dqunlock(newdq); | |
2331 | *IO_olddq = newdq; | |
2332 | ||
014c2544 | 2333 | return prevdq; |
1da177e4 LT |
2334 | } |
2335 | ||
2336 | /* | |
c8ad20ff | 2337 | * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). |
1da177e4 LT |
2338 | */ |
2339 | int | |
2340 | xfs_qm_vop_chown_reserve( | |
2341 | xfs_trans_t *tp, | |
2342 | xfs_inode_t *ip, | |
2343 | xfs_dquot_t *udqp, | |
2344 | xfs_dquot_t *gdqp, | |
2345 | uint flags) | |
2346 | { | |
7d095257 | 2347 | xfs_mount_t *mp = ip->i_mount; |
9a2a7de2 | 2348 | uint delblks, blkflags, prjflags = 0; |
1da177e4 | 2349 | xfs_dquot_t *unresudq, *unresgdq, *delblksudq, *delblksgdq; |
7d095257 CH |
2350 | int error; |
2351 | ||
1da177e4 | 2352 | |
579aa9ca | 2353 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); |
1da177e4 LT |
2354 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
2355 | ||
2356 | delblks = ip->i_delayed_blks; | |
2357 | delblksudq = delblksgdq = unresudq = unresgdq = NULL; | |
06d10dd9 NS |
2358 | blkflags = XFS_IS_REALTIME_INODE(ip) ? |
2359 | XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; | |
1da177e4 LT |
2360 | |
2361 | if (XFS_IS_UQUOTA_ON(mp) && udqp && | |
1149d96a | 2362 | ip->i_d.di_uid != (uid_t)be32_to_cpu(udqp->q_core.d_id)) { |
1da177e4 LT |
2363 | delblksudq = udqp; |
2364 | /* | |
2365 | * If there are delayed allocation blocks, then we have to | |
2366 | * unreserve those from the old dquot, and add them to the | |
2367 | * new dquot. | |
2368 | */ | |
2369 | if (delblks) { | |
2370 | ASSERT(ip->i_udquot); | |
2371 | unresudq = ip->i_udquot; | |
2372 | } | |
2373 | } | |
c8ad20ff | 2374 | if (XFS_IS_OQUOTA_ON(ip->i_mount) && gdqp) { |
9a2a7de2 NS |
2375 | if (XFS_IS_PQUOTA_ON(ip->i_mount) && |
2376 | ip->i_d.di_projid != be32_to_cpu(gdqp->q_core.d_id)) | |
2377 | prjflags = XFS_QMOPT_ENOSPC; | |
2378 | ||
2379 | if (prjflags || | |
2380 | (XFS_IS_GQUOTA_ON(ip->i_mount) && | |
2381 | ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id))) { | |
c8ad20ff NS |
2382 | delblksgdq = gdqp; |
2383 | if (delblks) { | |
2384 | ASSERT(ip->i_gdquot); | |
2385 | unresgdq = ip->i_gdquot; | |
2386 | } | |
1da177e4 LT |
2387 | } |
2388 | } | |
2389 | ||
2390 | if ((error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, | |
2391 | delblksudq, delblksgdq, ip->i_d.di_nblocks, 1, | |
9a2a7de2 | 2392 | flags | blkflags | prjflags))) |
1da177e4 LT |
2393 | return (error); |
2394 | ||
2395 | /* | |
2396 | * Do the delayed blks reservations/unreservations now. Since, these | |
2397 | * are done without the help of a transaction, if a reservation fails | |
2398 | * its previous reservations won't be automatically undone by trans | |
2399 | * code. So, we have to do it manually here. | |
2400 | */ | |
2401 | if (delblks) { | |
2402 | /* | |
2403 | * Do the reservations first. Unreservation can't fail. | |
2404 | */ | |
2405 | ASSERT(delblksudq || delblksgdq); | |
2406 | ASSERT(unresudq || unresgdq); | |
2407 | if ((error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
2408 | delblksudq, delblksgdq, (xfs_qcnt_t)delblks, 0, | |
9a2a7de2 | 2409 | flags | blkflags | prjflags))) |
1da177e4 LT |
2410 | return (error); |
2411 | xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
2412 | unresudq, unresgdq, -((xfs_qcnt_t)delblks), 0, | |
06d10dd9 | 2413 | blkflags); |
1da177e4 LT |
2414 | } |
2415 | ||
2416 | return (0); | |
2417 | } | |
2418 | ||
2419 | int | |
2420 | xfs_qm_vop_rename_dqattach( | |
7d095257 | 2421 | struct xfs_inode **i_tab) |
1da177e4 | 2422 | { |
7d095257 CH |
2423 | struct xfs_mount *mp = i_tab[0]->i_mount; |
2424 | int i; | |
1da177e4 | 2425 | |
7d095257 | 2426 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
014c2544 | 2427 | return 0; |
1da177e4 | 2428 | |
7d095257 CH |
2429 | for (i = 0; (i < 4 && i_tab[i]); i++) { |
2430 | struct xfs_inode *ip = i_tab[i]; | |
2431 | int error; | |
2432 | ||
1da177e4 LT |
2433 | /* |
2434 | * Watch out for duplicate entries in the table. | |
2435 | */ | |
7d095257 CH |
2436 | if (i == 0 || ip != i_tab[i-1]) { |
2437 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
1da177e4 LT |
2438 | error = xfs_qm_dqattach(ip, 0); |
2439 | if (error) | |
014c2544 | 2440 | return error; |
1da177e4 LT |
2441 | } |
2442 | } | |
2443 | } | |
014c2544 | 2444 | return 0; |
1da177e4 LT |
2445 | } |
2446 | ||
2447 | void | |
7d095257 CH |
2448 | xfs_qm_vop_create_dqattach( |
2449 | struct xfs_trans *tp, | |
2450 | struct xfs_inode *ip, | |
2451 | struct xfs_dquot *udqp, | |
2452 | struct xfs_dquot *gdqp) | |
1da177e4 | 2453 | { |
7d095257 CH |
2454 | struct xfs_mount *mp = tp->t_mountp; |
2455 | ||
2456 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) | |
1da177e4 LT |
2457 | return; |
2458 | ||
579aa9ca | 2459 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
7d095257 | 2460 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1da177e4 LT |
2461 | |
2462 | if (udqp) { | |
2463 | xfs_dqlock(udqp); | |
2464 | XFS_DQHOLD(udqp); | |
2465 | xfs_dqunlock(udqp); | |
2466 | ASSERT(ip->i_udquot == NULL); | |
2467 | ip->i_udquot = udqp; | |
7d095257 | 2468 | ASSERT(XFS_IS_UQUOTA_ON(mp)); |
1149d96a | 2469 | ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); |
1da177e4 LT |
2470 | xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); |
2471 | } | |
2472 | if (gdqp) { | |
2473 | xfs_dqlock(gdqp); | |
2474 | XFS_DQHOLD(gdqp); | |
2475 | xfs_dqunlock(gdqp); | |
2476 | ASSERT(ip->i_gdquot == NULL); | |
2477 | ip->i_gdquot = gdqp; | |
7d095257 CH |
2478 | ASSERT(XFS_IS_OQUOTA_ON(mp)); |
2479 | ASSERT((XFS_IS_GQUOTA_ON(mp) ? | |
ee2a4f7c NS |
2480 | ip->i_d.di_gid : ip->i_d.di_projid) == |
2481 | be32_to_cpu(gdqp->q_core.d_id)); | |
1da177e4 LT |
2482 | xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); |
2483 | } | |
2484 | } | |
2485 |