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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 LT |
26 | #include "xfs_dir2.h" |
27 | #include "xfs_alloc.h" | |
28 | #include "xfs_dmapi.h" | |
29 | #include "xfs_quota.h" | |
30 | #include "xfs_mount.h" | |
1da177e4 | 31 | #include "xfs_bmap_btree.h" |
a844f451 | 32 | #include "xfs_alloc_btree.h" |
1da177e4 | 33 | #include "xfs_ialloc_btree.h" |
1da177e4 | 34 | #include "xfs_dir2_sf.h" |
a844f451 | 35 | #include "xfs_attr_sf.h" |
1da177e4 LT |
36 | #include "xfs_dinode.h" |
37 | #include "xfs_inode.h" | |
a844f451 NS |
38 | #include "xfs_btree.h" |
39 | #include "xfs_ialloc.h" | |
40 | #include "xfs_itable.h" | |
1da177e4 LT |
41 | #include "xfs_rtalloc.h" |
42 | #include "xfs_error.h" | |
a844f451 | 43 | #include "xfs_bmap.h" |
1da177e4 | 44 | #include "xfs_rw.h" |
1da177e4 LT |
45 | #include "xfs_attr.h" |
46 | #include "xfs_buf_item.h" | |
47 | #include "xfs_trans_space.h" | |
48 | #include "xfs_utils.h" | |
1da177e4 | 49 | #include "xfs_qm.h" |
0b1b213f | 50 | #include "xfs_trace.h" |
1da177e4 LT |
51 | |
52 | /* | |
53 | * The global quota manager. There is only one of these for the entire | |
54 | * system, _not_ one per file system. XQM keeps track of the overall | |
55 | * quota functionality, including maintaining the freelist and hash | |
56 | * tables of dquots. | |
57 | */ | |
a0b0b8a5 | 58 | struct mutex xfs_Gqm_lock; |
1da177e4 | 59 | struct xfs_qm *xfs_Gqm; |
6b3f6b5b | 60 | uint ndquot; |
1da177e4 LT |
61 | |
62 | kmem_zone_t *qm_dqzone; | |
63 | kmem_zone_t *qm_dqtrxzone; | |
1da177e4 | 64 | |
7989cb8e | 65 | static cred_t xfs_zerocr; |
dae81d47 | 66 | |
1da177e4 LT |
67 | STATIC void xfs_qm_list_init(xfs_dqlist_t *, char *, int); |
68 | STATIC void xfs_qm_list_destroy(xfs_dqlist_t *); | |
69 | ||
70 | STATIC int xfs_qm_init_quotainos(xfs_mount_t *); | |
ba0f32d4 | 71 | STATIC int xfs_qm_init_quotainfo(xfs_mount_t *); |
51bfb75b | 72 | STATIC int xfs_qm_shake(int, gfp_t); |
1da177e4 | 73 | |
8e1f936b RR |
74 | static struct shrinker xfs_qm_shaker = { |
75 | .shrink = xfs_qm_shake, | |
76 | .seeks = DEFAULT_SEEKS, | |
77 | }; | |
78 | ||
1da177e4 | 79 | #ifdef DEBUG |
a0b0b8a5 | 80 | extern struct mutex qcheck_lock; |
1da177e4 LT |
81 | #endif |
82 | ||
83 | #ifdef QUOTADEBUG | |
3a25404b DC |
84 | static void |
85 | xfs_qm_dquot_list_print( | |
86 | struct xfs_mount *mp) | |
87 | { | |
88 | xfs_dquot_t *dqp; | |
89 | int i = 0; | |
90 | ||
91 | list_for_each_entry(dqp, &mp->m_quotainfo->qi_dqlist_lock, qi_mplist) { | |
92 | cmn_err(CE_DEBUG, " %d. \"%d (%s)\" " | |
93 | "bcnt = %lld, icnt = %lld, refs = %d", | |
94 | i++, be32_to_cpu(dqp->q_core.d_id), | |
95 | DQFLAGTO_TYPESTR(dqp), | |
96 | (long long)be64_to_cpu(dqp->q_core.d_bcount), | |
97 | (long long)be64_to_cpu(dqp->q_core.d_icount), | |
98 | dqp->q_nrefs); | |
99 | } | |
1da177e4 LT |
100 | } |
101 | #else | |
3a25404b | 102 | static void xfs_qm_dquot_list_print(struct xfs_mount *mp) { } |
1da177e4 LT |
103 | #endif |
104 | ||
105 | /* | |
106 | * Initialize the XQM structure. | |
107 | * Note that there is not one quota manager per file system. | |
108 | */ | |
109 | STATIC struct xfs_qm * | |
110 | xfs_Gqm_init(void) | |
111 | { | |
6b3f6b5b NS |
112 | xfs_dqhash_t *udqhash, *gdqhash; |
113 | xfs_qm_t *xqm; | |
215101c3 NS |
114 | size_t hsize; |
115 | uint i; | |
1da177e4 LT |
116 | |
117 | /* | |
118 | * Initialize the dquot hash tables. | |
119 | */ | |
77e4635a | 120 | udqhash = kmem_zalloc_greedy(&hsize, |
5995cb7d | 121 | XFS_QM_HASHSIZE_LOW * sizeof(xfs_dqhash_t), |
bdfb0430 CH |
122 | XFS_QM_HASHSIZE_HIGH * sizeof(xfs_dqhash_t)); |
123 | if (!udqhash) | |
124 | goto out; | |
125 | ||
126 | gdqhash = kmem_zalloc_large(hsize); | |
d67b1b03 | 127 | if (!gdqhash) |
bdfb0430 CH |
128 | goto out_free_udqhash; |
129 | ||
77e4635a | 130 | hsize /= sizeof(xfs_dqhash_t); |
6b3f6b5b | 131 | ndquot = hsize << 8; |
1da177e4 | 132 | |
6b3f6b5b NS |
133 | xqm = kmem_zalloc(sizeof(xfs_qm_t), KM_SLEEP); |
134 | xqm->qm_dqhashmask = hsize - 1; | |
135 | xqm->qm_usr_dqhtable = udqhash; | |
136 | xqm->qm_grp_dqhtable = gdqhash; | |
1da177e4 LT |
137 | ASSERT(xqm->qm_usr_dqhtable != NULL); |
138 | ASSERT(xqm->qm_grp_dqhtable != NULL); | |
139 | ||
140 | for (i = 0; i < hsize; i++) { | |
141 | xfs_qm_list_init(&(xqm->qm_usr_dqhtable[i]), "uxdqh", i); | |
142 | xfs_qm_list_init(&(xqm->qm_grp_dqhtable[i]), "gxdqh", i); | |
143 | } | |
144 | ||
145 | /* | |
146 | * Freelist of all dquots of all file systems | |
147 | */ | |
3a8406f6 DC |
148 | INIT_LIST_HEAD(&xqm->qm_dqfrlist); |
149 | xqm->qm_dqfrlist_cnt = 0; | |
150 | mutex_init(&xqm->qm_dqfrlist_lock); | |
1da177e4 LT |
151 | |
152 | /* | |
153 | * dquot zone. we register our own low-memory callback. | |
154 | */ | |
155 | if (!qm_dqzone) { | |
156 | xqm->qm_dqzone = kmem_zone_init(sizeof(xfs_dquot_t), | |
157 | "xfs_dquots"); | |
158 | qm_dqzone = xqm->qm_dqzone; | |
159 | } else | |
160 | xqm->qm_dqzone = qm_dqzone; | |
161 | ||
8e1f936b | 162 | register_shrinker(&xfs_qm_shaker); |
1da177e4 LT |
163 | |
164 | /* | |
165 | * The t_dqinfo portion of transactions. | |
166 | */ | |
167 | if (!qm_dqtrxzone) { | |
168 | xqm->qm_dqtrxzone = kmem_zone_init(sizeof(xfs_dquot_acct_t), | |
169 | "xfs_dqtrx"); | |
170 | qm_dqtrxzone = xqm->qm_dqtrxzone; | |
171 | } else | |
172 | xqm->qm_dqtrxzone = qm_dqtrxzone; | |
173 | ||
174 | atomic_set(&xqm->qm_totaldquots, 0); | |
175 | xqm->qm_dqfree_ratio = XFS_QM_DQFREE_RATIO; | |
176 | xqm->qm_nrefs = 0; | |
177 | #ifdef DEBUG | |
c2e81432 | 178 | mutex_init(&qcheck_lock); |
1da177e4 LT |
179 | #endif |
180 | return xqm; | |
bdfb0430 CH |
181 | |
182 | out_free_udqhash: | |
183 | kmem_free_large(udqhash); | |
184 | out: | |
185 | return NULL; | |
1da177e4 LT |
186 | } |
187 | ||
188 | /* | |
189 | * Destroy the global quota manager when its reference count goes to zero. | |
190 | */ | |
ba0f32d4 | 191 | STATIC void |
1da177e4 LT |
192 | xfs_qm_destroy( |
193 | struct xfs_qm *xqm) | |
194 | { | |
3a8406f6 | 195 | struct xfs_dquot *dqp, *n; |
1da177e4 LT |
196 | int hsize, i; |
197 | ||
198 | ASSERT(xqm != NULL); | |
199 | ASSERT(xqm->qm_nrefs == 0); | |
8e1f936b | 200 | unregister_shrinker(&xfs_qm_shaker); |
1da177e4 LT |
201 | hsize = xqm->qm_dqhashmask + 1; |
202 | for (i = 0; i < hsize; i++) { | |
203 | xfs_qm_list_destroy(&(xqm->qm_usr_dqhtable[i])); | |
204 | xfs_qm_list_destroy(&(xqm->qm_grp_dqhtable[i])); | |
205 | } | |
bdfb0430 CH |
206 | kmem_free_large(xqm->qm_usr_dqhtable); |
207 | kmem_free_large(xqm->qm_grp_dqhtable); | |
1da177e4 LT |
208 | xqm->qm_usr_dqhtable = NULL; |
209 | xqm->qm_grp_dqhtable = NULL; | |
210 | xqm->qm_dqhashmask = 0; | |
3a8406f6 DC |
211 | |
212 | /* frlist cleanup */ | |
213 | mutex_lock(&xqm->qm_dqfrlist_lock); | |
214 | list_for_each_entry_safe(dqp, n, &xqm->qm_dqfrlist, q_freelist) { | |
215 | xfs_dqlock(dqp); | |
216 | #ifdef QUOTADEBUG | |
217 | cmn_err(CE_DEBUG, "FREELIST destroy 0x%p", dqp); | |
218 | #endif | |
219 | list_del_init(&dqp->q_freelist); | |
220 | xfs_Gqm->qm_dqfrlist_cnt--; | |
221 | xfs_dqunlock(dqp); | |
222 | xfs_qm_dqdestroy(dqp); | |
223 | } | |
224 | mutex_unlock(&xqm->qm_dqfrlist_lock); | |
225 | mutex_destroy(&xqm->qm_dqfrlist_lock); | |
1da177e4 LT |
226 | #ifdef DEBUG |
227 | mutex_destroy(&qcheck_lock); | |
228 | #endif | |
f0e2d93c | 229 | kmem_free(xqm); |
1da177e4 LT |
230 | } |
231 | ||
232 | /* | |
233 | * Called at mount time to let XQM know that another file system is | |
234 | * starting quotas. This isn't crucial information as the individual mount | |
235 | * structures are pretty independent, but it helps the XQM keep a | |
236 | * global view of what's going on. | |
237 | */ | |
238 | /* ARGSUSED */ | |
239 | STATIC int | |
240 | xfs_qm_hold_quotafs_ref( | |
241 | struct xfs_mount *mp) | |
242 | { | |
243 | /* | |
244 | * Need to lock the xfs_Gqm structure for things like this. For example, | |
245 | * the structure could disappear between the entry to this routine and | |
246 | * a HOLD operation if not locked. | |
247 | */ | |
e2494582 | 248 | mutex_lock(&xfs_Gqm_lock); |
1da177e4 | 249 | |
bdfb0430 | 250 | if (!xfs_Gqm) { |
1da177e4 | 251 | xfs_Gqm = xfs_Gqm_init(); |
bdfb0430 CH |
252 | if (!xfs_Gqm) |
253 | return ENOMEM; | |
254 | } | |
255 | ||
1da177e4 LT |
256 | /* |
257 | * We can keep a list of all filesystems with quotas mounted for | |
258 | * debugging and statistical purposes, but ... | |
259 | * Just take a reference and get out. | |
260 | */ | |
e2494582 CH |
261 | xfs_Gqm->qm_nrefs++; |
262 | mutex_unlock(&xfs_Gqm_lock); | |
1da177e4 LT |
263 | |
264 | return 0; | |
265 | } | |
266 | ||
267 | ||
268 | /* | |
269 | * Release the reference that a filesystem took at mount time, | |
270 | * so that we know when we need to destroy the entire quota manager. | |
271 | */ | |
272 | /* ARGSUSED */ | |
273 | STATIC void | |
274 | xfs_qm_rele_quotafs_ref( | |
275 | struct xfs_mount *mp) | |
276 | { | |
3a8406f6 | 277 | xfs_dquot_t *dqp, *n; |
1da177e4 LT |
278 | |
279 | ASSERT(xfs_Gqm); | |
280 | ASSERT(xfs_Gqm->qm_nrefs > 0); | |
281 | ||
282 | /* | |
283 | * Go thru the freelist and destroy all inactive dquots. | |
284 | */ | |
3a8406f6 | 285 | mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 | 286 | |
3a8406f6 | 287 | list_for_each_entry_safe(dqp, n, &xfs_Gqm->qm_dqfrlist, q_freelist) { |
1da177e4 | 288 | xfs_dqlock(dqp); |
1da177e4 LT |
289 | if (dqp->dq_flags & XFS_DQ_INACTIVE) { |
290 | ASSERT(dqp->q_mount == NULL); | |
291 | ASSERT(! XFS_DQ_IS_DIRTY(dqp)); | |
e6a81f13 | 292 | ASSERT(list_empty(&dqp->q_hashlist)); |
3a25404b | 293 | ASSERT(list_empty(&dqp->q_mplist)); |
3a8406f6 DC |
294 | list_del_init(&dqp->q_freelist); |
295 | xfs_Gqm->qm_dqfrlist_cnt--; | |
1da177e4 LT |
296 | xfs_dqunlock(dqp); |
297 | xfs_qm_dqdestroy(dqp); | |
298 | } else { | |
299 | xfs_dqunlock(dqp); | |
300 | } | |
1da177e4 | 301 | } |
3a8406f6 | 302 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 LT |
303 | |
304 | /* | |
305 | * Destroy the entire XQM. If somebody mounts with quotaon, this'll | |
306 | * be restarted. | |
307 | */ | |
e2494582 CH |
308 | mutex_lock(&xfs_Gqm_lock); |
309 | if (--xfs_Gqm->qm_nrefs == 0) { | |
1da177e4 LT |
310 | xfs_qm_destroy(xfs_Gqm); |
311 | xfs_Gqm = NULL; | |
312 | } | |
e2494582 | 313 | mutex_unlock(&xfs_Gqm_lock); |
1da177e4 LT |
314 | } |
315 | ||
1da177e4 LT |
316 | /* |
317 | * Just destroy the quotainfo structure. | |
318 | */ | |
319 | void | |
7d095257 CH |
320 | xfs_qm_unmount( |
321 | struct xfs_mount *mp) | |
1da177e4 | 322 | { |
7d095257 CH |
323 | if (mp->m_quotainfo) { |
324 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL | XFS_QMOPT_UMOUNTING); | |
1da177e4 | 325 | xfs_qm_destroy_quotainfo(mp); |
7d095257 | 326 | } |
1da177e4 LT |
327 | } |
328 | ||
329 | ||
330 | /* | |
331 | * This is called from xfs_mountfs to start quotas and initialize all | |
332 | * necessary data structures like quotainfo. This is also responsible for | |
333 | * running a quotacheck as necessary. We are guaranteed that the superblock | |
334 | * is consistently read in at this point. | |
53aa7915 DC |
335 | * |
336 | * If we fail here, the mount will continue with quota turned off. We don't | |
337 | * need to inidicate success or failure at all. | |
1da177e4 | 338 | */ |
53aa7915 | 339 | void |
1da177e4 | 340 | xfs_qm_mount_quotas( |
4249023a | 341 | xfs_mount_t *mp) |
1da177e4 | 342 | { |
1da177e4 LT |
343 | int error = 0; |
344 | uint sbf; | |
345 | ||
1da177e4 LT |
346 | /* |
347 | * If quotas on realtime volumes is not supported, we disable | |
348 | * quotas immediately. | |
349 | */ | |
350 | if (mp->m_sb.sb_rextents) { | |
351 | cmn_err(CE_NOTE, | |
352 | "Cannot turn on quotas for realtime filesystem %s", | |
353 | mp->m_fsname); | |
354 | mp->m_qflags = 0; | |
355 | goto write_changes; | |
356 | } | |
357 | ||
1da177e4 | 358 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
155ffd07 | 359 | |
1da177e4 LT |
360 | /* |
361 | * Allocate the quotainfo structure inside the mount struct, and | |
362 | * create quotainode(s), and change/rev superblock if necessary. | |
363 | */ | |
53aa7915 DC |
364 | error = xfs_qm_init_quotainfo(mp); |
365 | if (error) { | |
1da177e4 LT |
366 | /* |
367 | * We must turn off quotas. | |
368 | */ | |
369 | ASSERT(mp->m_quotainfo == NULL); | |
370 | mp->m_qflags = 0; | |
371 | goto write_changes; | |
372 | } | |
373 | /* | |
374 | * If any of the quotas are not consistent, do a quotacheck. | |
375 | */ | |
4249023a | 376 | if (XFS_QM_NEED_QUOTACHECK(mp)) { |
53aa7915 DC |
377 | error = xfs_qm_quotacheck(mp); |
378 | if (error) { | |
379 | /* Quotacheck failed and disabled quotas. */ | |
380 | return; | |
1da177e4 | 381 | } |
1da177e4 | 382 | } |
646d5bda DD |
383 | /* |
384 | * If one type of quotas is off, then it will lose its | |
385 | * quotachecked status, since we won't be doing accounting for | |
386 | * that type anymore. | |
387 | */ | |
53aa7915 | 388 | if (!XFS_IS_UQUOTA_ON(mp)) |
646d5bda | 389 | mp->m_qflags &= ~XFS_UQUOTA_CHKD; |
53aa7915 | 390 | if (!(XFS_IS_GQUOTA_ON(mp) || XFS_IS_PQUOTA_ON(mp))) |
646d5bda | 391 | mp->m_qflags &= ~XFS_OQUOTA_CHKD; |
155ffd07 | 392 | |
1da177e4 LT |
393 | write_changes: |
394 | /* | |
3685c2a1 | 395 | * We actually don't have to acquire the m_sb_lock at all. |
1da177e4 LT |
396 | * This can only be called from mount, and that's single threaded. XXX |
397 | */ | |
3685c2a1 | 398 | spin_lock(&mp->m_sb_lock); |
1da177e4 LT |
399 | sbf = mp->m_sb.sb_qflags; |
400 | mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL; | |
3685c2a1 | 401 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
402 | |
403 | if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { | |
404 | if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) { | |
405 | /* | |
406 | * We could only have been turning quotas off. | |
407 | * We aren't in very good shape actually because | |
408 | * the incore structures are convinced that quotas are | |
409 | * off, but the on disk superblock doesn't know that ! | |
410 | */ | |
411 | ASSERT(!(XFS_IS_QUOTA_RUNNING(mp))); | |
412 | xfs_fs_cmn_err(CE_ALERT, mp, | |
413 | "XFS mount_quotas: Superblock update failed!"); | |
414 | } | |
415 | } | |
416 | ||
417 | if (error) { | |
418 | xfs_fs_cmn_err(CE_WARN, mp, | |
419 | "Failed to initialize disk quotas."); | |
7d095257 | 420 | return; |
1da177e4 | 421 | } |
7d095257 CH |
422 | |
423 | #ifdef QUOTADEBUG | |
424 | if (XFS_IS_QUOTA_ON(mp)) | |
425 | xfs_qm_internalqcheck(mp); | |
426 | #endif | |
1da177e4 LT |
427 | } |
428 | ||
429 | /* | |
430 | * Called from the vfsops layer. | |
431 | */ | |
e57481dc | 432 | void |
1da177e4 LT |
433 | xfs_qm_unmount_quotas( |
434 | xfs_mount_t *mp) | |
435 | { | |
1da177e4 LT |
436 | /* |
437 | * Release the dquots that root inode, et al might be holding, | |
438 | * before we flush quotas and blow away the quotainfo structure. | |
439 | */ | |
440 | ASSERT(mp->m_rootip); | |
441 | xfs_qm_dqdetach(mp->m_rootip); | |
442 | if (mp->m_rbmip) | |
443 | xfs_qm_dqdetach(mp->m_rbmip); | |
444 | if (mp->m_rsumip) | |
445 | xfs_qm_dqdetach(mp->m_rsumip); | |
446 | ||
447 | /* | |
e57481dc | 448 | * Release the quota inodes. |
1da177e4 | 449 | */ |
1da177e4 | 450 | if (mp->m_quotainfo) { |
e57481dc CH |
451 | if (mp->m_quotainfo->qi_uquotaip) { |
452 | IRELE(mp->m_quotainfo->qi_uquotaip); | |
453 | mp->m_quotainfo->qi_uquotaip = NULL; | |
1da177e4 | 454 | } |
e57481dc CH |
455 | if (mp->m_quotainfo->qi_gquotaip) { |
456 | IRELE(mp->m_quotainfo->qi_gquotaip); | |
457 | mp->m_quotainfo->qi_gquotaip = NULL; | |
1da177e4 LT |
458 | } |
459 | } | |
1da177e4 LT |
460 | } |
461 | ||
462 | /* | |
463 | * Flush all dquots of the given file system to disk. The dquots are | |
464 | * _not_ purged from memory here, just their data written to disk. | |
465 | */ | |
ba0f32d4 | 466 | STATIC int |
1da177e4 | 467 | xfs_qm_dqflush_all( |
8a7b8a89 CH |
468 | struct xfs_mount *mp, |
469 | int sync_mode) | |
1da177e4 | 470 | { |
8a7b8a89 CH |
471 | struct xfs_quotainfo *q = mp->m_quotainfo; |
472 | int recl; | |
473 | struct xfs_dquot *dqp; | |
474 | int niters; | |
475 | int error; | |
1da177e4 | 476 | |
8a7b8a89 | 477 | if (!q) |
014c2544 | 478 | return 0; |
1da177e4 LT |
479 | niters = 0; |
480 | again: | |
8a7b8a89 CH |
481 | mutex_lock(&q->qi_dqlist_lock); |
482 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 LT |
483 | xfs_dqlock(dqp); |
484 | if (! XFS_DQ_IS_DIRTY(dqp)) { | |
485 | xfs_dqunlock(dqp); | |
486 | continue; | |
487 | } | |
0b1b213f | 488 | |
1da177e4 | 489 | /* XXX a sentinel would be better */ |
8a7b8a89 | 490 | recl = q->qi_dqreclaims; |
e1f49cf2 | 491 | if (!xfs_dqflock_nowait(dqp)) { |
1da177e4 LT |
492 | /* |
493 | * If we can't grab the flush lock then check | |
494 | * to see if the dquot has been flushed delayed | |
495 | * write. If so, grab its buffer and send it | |
496 | * out immediately. We'll be able to acquire | |
497 | * the flush lock when the I/O completes. | |
498 | */ | |
499 | xfs_qm_dqflock_pushbuf_wait(dqp); | |
500 | } | |
501 | /* | |
502 | * Let go of the mplist lock. We don't want to hold it | |
503 | * across a disk write. | |
504 | */ | |
8a7b8a89 | 505 | mutex_unlock(&q->qi_dqlist_lock); |
20026d92 | 506 | error = xfs_qm_dqflush(dqp, sync_mode); |
1da177e4 LT |
507 | xfs_dqunlock(dqp); |
508 | if (error) | |
014c2544 | 509 | return error; |
1da177e4 | 510 | |
8a7b8a89 CH |
511 | mutex_lock(&q->qi_dqlist_lock); |
512 | if (recl != q->qi_dqreclaims) { | |
513 | mutex_unlock(&q->qi_dqlist_lock); | |
1da177e4 LT |
514 | /* XXX restart limit */ |
515 | goto again; | |
516 | } | |
517 | } | |
518 | ||
8a7b8a89 | 519 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 | 520 | /* return ! busy */ |
014c2544 | 521 | return 0; |
1da177e4 LT |
522 | } |
523 | /* | |
524 | * Release the group dquot pointers the user dquots may be | |
525 | * carrying around as a hint. mplist is locked on entry and exit. | |
526 | */ | |
527 | STATIC void | |
528 | xfs_qm_detach_gdquots( | |
8a7b8a89 | 529 | struct xfs_mount *mp) |
1da177e4 | 530 | { |
8a7b8a89 CH |
531 | struct xfs_quotainfo *q = mp->m_quotainfo; |
532 | struct xfs_dquot *dqp, *gdqp; | |
533 | int nrecl; | |
1da177e4 LT |
534 | |
535 | again: | |
8a7b8a89 CH |
536 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
537 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 LT |
538 | xfs_dqlock(dqp); |
539 | if ((gdqp = dqp->q_gdquot)) { | |
540 | xfs_dqlock(gdqp); | |
541 | dqp->q_gdquot = NULL; | |
542 | } | |
543 | xfs_dqunlock(dqp); | |
544 | ||
545 | if (gdqp) { | |
546 | /* | |
547 | * Can't hold the mplist lock across a dqput. | |
548 | * XXXmust convert to marker based iterations here. | |
549 | */ | |
8a7b8a89 CH |
550 | nrecl = q->qi_dqreclaims; |
551 | mutex_unlock(&q->qi_dqlist_lock); | |
1da177e4 LT |
552 | xfs_qm_dqput(gdqp); |
553 | ||
8a7b8a89 CH |
554 | mutex_lock(&q->qi_dqlist_lock); |
555 | if (nrecl != q->qi_dqreclaims) | |
1da177e4 LT |
556 | goto again; |
557 | } | |
1da177e4 LT |
558 | } |
559 | } | |
560 | ||
561 | /* | |
562 | * Go through all the incore dquots of this file system and take them | |
563 | * off the mplist and hashlist, if the dquot type matches the dqtype | |
564 | * parameter. This is used when turning off quota accounting for | |
565 | * users and/or groups, as well as when the filesystem is unmounting. | |
566 | */ | |
567 | STATIC int | |
568 | xfs_qm_dqpurge_int( | |
8a7b8a89 CH |
569 | struct xfs_mount *mp, |
570 | uint flags) | |
1da177e4 | 571 | { |
8a7b8a89 CH |
572 | struct xfs_quotainfo *q = mp->m_quotainfo; |
573 | struct xfs_dquot *dqp, *n; | |
574 | uint dqtype; | |
575 | int nrecl; | |
576 | int nmisses; | |
1da177e4 | 577 | |
8a7b8a89 | 578 | if (!q) |
014c2544 | 579 | return 0; |
1da177e4 LT |
580 | |
581 | dqtype = (flags & XFS_QMOPT_UQUOTA) ? XFS_DQ_USER : 0; | |
c8ad20ff | 582 | dqtype |= (flags & XFS_QMOPT_PQUOTA) ? XFS_DQ_PROJ : 0; |
1da177e4 LT |
583 | dqtype |= (flags & XFS_QMOPT_GQUOTA) ? XFS_DQ_GROUP : 0; |
584 | ||
8a7b8a89 | 585 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
586 | |
587 | /* | |
588 | * In the first pass through all incore dquots of this filesystem, | |
589 | * we release the group dquot pointers the user dquots may be | |
590 | * carrying around as a hint. We need to do this irrespective of | |
591 | * what's being turned off. | |
592 | */ | |
593 | xfs_qm_detach_gdquots(mp); | |
594 | ||
595 | again: | |
596 | nmisses = 0; | |
8a7b8a89 | 597 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
1da177e4 LT |
598 | /* |
599 | * Try to get rid of all of the unwanted dquots. The idea is to | |
600 | * get them off mplist and hashlist, but leave them on freelist. | |
601 | */ | |
8a7b8a89 | 602 | list_for_each_entry_safe(dqp, n, &q->qi_dqlist, q_mplist) { |
1da177e4 LT |
603 | /* |
604 | * It's OK to look at the type without taking dqlock here. | |
605 | * We're holding the mplist lock here, and that's needed for | |
606 | * a dqreclaim. | |
607 | */ | |
3a25404b | 608 | if ((dqp->dq_flags & dqtype) == 0) |
1da177e4 | 609 | continue; |
1da177e4 | 610 | |
c9a192dc | 611 | if (!mutex_trylock(&dqp->q_hash->qh_lock)) { |
8a7b8a89 CH |
612 | nrecl = q->qi_dqreclaims; |
613 | mutex_unlock(&q->qi_dqlist_lock); | |
c9a192dc | 614 | mutex_lock(&dqp->q_hash->qh_lock); |
8a7b8a89 | 615 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
616 | |
617 | /* | |
618 | * XXXTheoretically, we can get into a very long | |
619 | * ping pong game here. | |
620 | * No one can be adding dquots to the mplist at | |
621 | * this point, but somebody might be taking things off. | |
622 | */ | |
8a7b8a89 | 623 | if (nrecl != q->qi_dqreclaims) { |
c9a192dc | 624 | mutex_unlock(&dqp->q_hash->qh_lock); |
1da177e4 LT |
625 | goto again; |
626 | } | |
627 | } | |
628 | ||
629 | /* | |
630 | * Take the dquot off the mplist and hashlist. It may remain on | |
631 | * freelist in INACTIVE state. | |
632 | */ | |
4f0e8a98 | 633 | nmisses += xfs_qm_dqpurge(dqp); |
1da177e4 | 634 | } |
8a7b8a89 | 635 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 LT |
636 | return nmisses; |
637 | } | |
638 | ||
639 | int | |
640 | xfs_qm_dqpurge_all( | |
641 | xfs_mount_t *mp, | |
642 | uint flags) | |
643 | { | |
644 | int ndquots; | |
645 | ||
646 | /* | |
647 | * Purge the dquot cache. | |
648 | * None of the dquots should really be busy at this point. | |
649 | */ | |
650 | if (mp->m_quotainfo) { | |
651 | while ((ndquots = xfs_qm_dqpurge_int(mp, flags))) { | |
652 | delay(ndquots * 10); | |
653 | } | |
654 | } | |
655 | return 0; | |
656 | } | |
657 | ||
658 | STATIC int | |
659 | xfs_qm_dqattach_one( | |
660 | xfs_inode_t *ip, | |
661 | xfs_dqid_t id, | |
662 | uint type, | |
663 | uint doalloc, | |
1da177e4 LT |
664 | xfs_dquot_t *udqhint, /* hint */ |
665 | xfs_dquot_t **IO_idqpp) | |
666 | { | |
667 | xfs_dquot_t *dqp; | |
668 | int error; | |
669 | ||
579aa9ca | 670 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 671 | error = 0; |
8e9b6e7f | 672 | |
1da177e4 LT |
673 | /* |
674 | * See if we already have it in the inode itself. IO_idqpp is | |
675 | * &i_udquot or &i_gdquot. This made the code look weird, but | |
676 | * made the logic a lot simpler. | |
677 | */ | |
8e9b6e7f CH |
678 | dqp = *IO_idqpp; |
679 | if (dqp) { | |
0b1b213f | 680 | trace_xfs_dqattach_found(dqp); |
8e9b6e7f | 681 | return 0; |
1da177e4 LT |
682 | } |
683 | ||
684 | /* | |
685 | * udqhint is the i_udquot field in inode, and is non-NULL only | |
c8ad20ff | 686 | * when the type arg is group/project. Its purpose is to save a |
1da177e4 LT |
687 | * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside |
688 | * the user dquot. | |
689 | */ | |
8e9b6e7f CH |
690 | if (udqhint) { |
691 | ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); | |
1da177e4 LT |
692 | xfs_dqlock(udqhint); |
693 | ||
8e9b6e7f CH |
694 | /* |
695 | * No need to take dqlock to look at the id. | |
696 | * | |
697 | * The ID can't change until it gets reclaimed, and it won't | |
698 | * be reclaimed as long as we have a ref from inode and we | |
699 | * hold the ilock. | |
700 | */ | |
701 | dqp = udqhint->q_gdquot; | |
702 | if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) { | |
703 | xfs_dqlock(dqp); | |
704 | XFS_DQHOLD(dqp); | |
705 | ASSERT(*IO_idqpp == NULL); | |
706 | *IO_idqpp = dqp; | |
707 | ||
1da177e4 LT |
708 | xfs_dqunlock(dqp); |
709 | xfs_dqunlock(udqhint); | |
8e9b6e7f | 710 | return 0; |
1da177e4 | 711 | } |
8e9b6e7f CH |
712 | |
713 | /* | |
714 | * We can't hold a dquot lock when we call the dqget code. | |
715 | * We'll deadlock in no time, because of (not conforming to) | |
716 | * lock ordering - the inodelock comes before any dquot lock, | |
717 | * and we may drop and reacquire the ilock in xfs_qm_dqget(). | |
718 | */ | |
1da177e4 | 719 | xfs_dqunlock(udqhint); |
8e9b6e7f CH |
720 | } |
721 | ||
1da177e4 LT |
722 | /* |
723 | * Find the dquot from somewhere. This bumps the | |
724 | * reference count of dquot and returns it locked. | |
725 | * This can return ENOENT if dquot didn't exist on | |
726 | * disk and we didn't ask it to allocate; | |
727 | * ESRCH if quotas got turned off suddenly. | |
728 | */ | |
8e9b6e7f CH |
729 | error = xfs_qm_dqget(ip->i_mount, ip, id, type, XFS_QMOPT_DOWARN, &dqp); |
730 | if (error) | |
731 | return error; | |
1da177e4 | 732 | |
0b1b213f | 733 | trace_xfs_dqattach_get(dqp); |
8e9b6e7f | 734 | |
1da177e4 LT |
735 | /* |
736 | * dqget may have dropped and re-acquired the ilock, but it guarantees | |
737 | * that the dquot returned is the one that should go in the inode. | |
738 | */ | |
739 | *IO_idqpp = dqp; | |
8e9b6e7f CH |
740 | xfs_dqunlock(dqp); |
741 | return 0; | |
1da177e4 LT |
742 | } |
743 | ||
744 | ||
745 | /* | |
746 | * Given a udquot and gdquot, attach a ptr to the group dquot in the | |
747 | * udquot as a hint for future lookups. The idea sounds simple, but the | |
748 | * execution isn't, because the udquot might have a group dquot attached | |
c41564b5 | 749 | * already and getting rid of that gets us into lock ordering constraints. |
1da177e4 LT |
750 | * The process is complicated more by the fact that the dquots may or may not |
751 | * be locked on entry. | |
752 | */ | |
753 | STATIC void | |
754 | xfs_qm_dqattach_grouphint( | |
755 | xfs_dquot_t *udq, | |
8e9b6e7f | 756 | xfs_dquot_t *gdq) |
1da177e4 LT |
757 | { |
758 | xfs_dquot_t *tmp; | |
759 | ||
8e9b6e7f | 760 | xfs_dqlock(udq); |
1da177e4 LT |
761 | |
762 | if ((tmp = udq->q_gdquot)) { | |
763 | if (tmp == gdq) { | |
8e9b6e7f | 764 | xfs_dqunlock(udq); |
1da177e4 LT |
765 | return; |
766 | } | |
767 | ||
768 | udq->q_gdquot = NULL; | |
769 | /* | |
770 | * We can't keep any dqlocks when calling dqrele, | |
771 | * because the freelist lock comes before dqlocks. | |
772 | */ | |
773 | xfs_dqunlock(udq); | |
1da177e4 LT |
774 | /* |
775 | * we took a hard reference once upon a time in dqget, | |
776 | * so give it back when the udquot no longer points at it | |
777 | * dqput() does the unlocking of the dquot. | |
778 | */ | |
779 | xfs_qm_dqrele(tmp); | |
780 | ||
781 | xfs_dqlock(udq); | |
782 | xfs_dqlock(gdq); | |
783 | ||
784 | } else { | |
785 | ASSERT(XFS_DQ_IS_LOCKED(udq)); | |
8e9b6e7f | 786 | xfs_dqlock(gdq); |
1da177e4 LT |
787 | } |
788 | ||
789 | ASSERT(XFS_DQ_IS_LOCKED(udq)); | |
790 | ASSERT(XFS_DQ_IS_LOCKED(gdq)); | |
791 | /* | |
792 | * Somebody could have attached a gdquot here, | |
793 | * when we dropped the uqlock. If so, just do nothing. | |
794 | */ | |
795 | if (udq->q_gdquot == NULL) { | |
796 | XFS_DQHOLD(gdq); | |
797 | udq->q_gdquot = gdq; | |
798 | } | |
8e9b6e7f CH |
799 | |
800 | xfs_dqunlock(gdq); | |
801 | xfs_dqunlock(udq); | |
1da177e4 LT |
802 | } |
803 | ||
804 | ||
805 | /* | |
c8ad20ff NS |
806 | * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON |
807 | * into account. | |
1da177e4 | 808 | * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. |
1da177e4 LT |
809 | * Inode may get unlocked and relocked in here, and the caller must deal with |
810 | * the consequences. | |
811 | */ | |
812 | int | |
7d095257 | 813 | xfs_qm_dqattach_locked( |
1da177e4 LT |
814 | xfs_inode_t *ip, |
815 | uint flags) | |
816 | { | |
817 | xfs_mount_t *mp = ip->i_mount; | |
818 | uint nquotas = 0; | |
819 | int error = 0; | |
820 | ||
7d095257 CH |
821 | if (!XFS_IS_QUOTA_RUNNING(mp) || |
822 | !XFS_IS_QUOTA_ON(mp) || | |
823 | !XFS_NOT_DQATTACHED(mp, ip) || | |
824 | ip->i_ino == mp->m_sb.sb_uquotino || | |
825 | ip->i_ino == mp->m_sb.sb_gquotino) | |
014c2544 | 826 | return 0; |
1da177e4 | 827 | |
7d095257 | 828 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
829 | |
830 | if (XFS_IS_UQUOTA_ON(mp)) { | |
831 | error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, | |
832 | flags & XFS_QMOPT_DQALLOC, | |
1da177e4 LT |
833 | NULL, &ip->i_udquot); |
834 | if (error) | |
835 | goto done; | |
836 | nquotas++; | |
837 | } | |
579aa9ca CH |
838 | |
839 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); | |
c8ad20ff NS |
840 | if (XFS_IS_OQUOTA_ON(mp)) { |
841 | error = XFS_IS_GQUOTA_ON(mp) ? | |
842 | xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, | |
843 | flags & XFS_QMOPT_DQALLOC, | |
c8ad20ff NS |
844 | ip->i_udquot, &ip->i_gdquot) : |
845 | xfs_qm_dqattach_one(ip, ip->i_d.di_projid, XFS_DQ_PROJ, | |
1da177e4 | 846 | flags & XFS_QMOPT_DQALLOC, |
1da177e4 LT |
847 | ip->i_udquot, &ip->i_gdquot); |
848 | /* | |
849 | * Don't worry about the udquot that we may have | |
850 | * attached above. It'll get detached, if not already. | |
851 | */ | |
852 | if (error) | |
853 | goto done; | |
854 | nquotas++; | |
855 | } | |
856 | ||
857 | /* | |
858 | * Attach this group quota to the user quota as a hint. | |
859 | * This WON'T, in general, result in a thrash. | |
860 | */ | |
861 | if (nquotas == 2) { | |
579aa9ca | 862 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
863 | ASSERT(ip->i_udquot); |
864 | ASSERT(ip->i_gdquot); | |
865 | ||
866 | /* | |
867 | * We may or may not have the i_udquot locked at this point, | |
868 | * but this check is OK since we don't depend on the i_gdquot to | |
869 | * be accurate 100% all the time. It is just a hint, and this | |
870 | * will succeed in general. | |
871 | */ | |
872 | if (ip->i_udquot->q_gdquot == ip->i_gdquot) | |
873 | goto done; | |
874 | /* | |
875 | * Attach i_gdquot to the gdquot hint inside the i_udquot. | |
876 | */ | |
8e9b6e7f | 877 | xfs_qm_dqattach_grouphint(ip->i_udquot, ip->i_gdquot); |
1da177e4 LT |
878 | } |
879 | ||
7d095257 | 880 | done: |
1da177e4 LT |
881 | #ifdef QUOTADEBUG |
882 | if (! error) { | |
1da177e4 LT |
883 | if (XFS_IS_UQUOTA_ON(mp)) |
884 | ASSERT(ip->i_udquot); | |
c8ad20ff | 885 | if (XFS_IS_OQUOTA_ON(mp)) |
1da177e4 LT |
886 | ASSERT(ip->i_gdquot); |
887 | } | |
7d095257 | 888 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 889 | #endif |
7d095257 CH |
890 | return error; |
891 | } | |
1da177e4 | 892 | |
7d095257 CH |
893 | int |
894 | xfs_qm_dqattach( | |
895 | struct xfs_inode *ip, | |
896 | uint flags) | |
897 | { | |
898 | int error; | |
899 | ||
900 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
901 | error = xfs_qm_dqattach_locked(ip, flags); | |
902 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1da177e4 | 903 | |
014c2544 | 904 | return error; |
1da177e4 LT |
905 | } |
906 | ||
907 | /* | |
908 | * Release dquots (and their references) if any. | |
909 | * The inode should be locked EXCL except when this's called by | |
910 | * xfs_ireclaim. | |
911 | */ | |
912 | void | |
913 | xfs_qm_dqdetach( | |
914 | xfs_inode_t *ip) | |
915 | { | |
916 | if (!(ip->i_udquot || ip->i_gdquot)) | |
917 | return; | |
918 | ||
0b1b213f CH |
919 | trace_xfs_dquot_dqdetach(ip); |
920 | ||
1da177e4 LT |
921 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_uquotino); |
922 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_gquotino); | |
1da177e4 LT |
923 | if (ip->i_udquot) { |
924 | xfs_qm_dqrele(ip->i_udquot); | |
925 | ip->i_udquot = NULL; | |
926 | } | |
927 | if (ip->i_gdquot) { | |
928 | xfs_qm_dqrele(ip->i_gdquot); | |
929 | ip->i_gdquot = NULL; | |
930 | } | |
931 | } | |
932 | ||
1da177e4 LT |
933 | int |
934 | xfs_qm_sync( | |
8a7b8a89 CH |
935 | struct xfs_mount *mp, |
936 | int flags) | |
1da177e4 | 937 | { |
8a7b8a89 CH |
938 | struct xfs_quotainfo *q = mp->m_quotainfo; |
939 | int recl, restarts; | |
940 | struct xfs_dquot *dqp; | |
941 | int error; | |
1da177e4 | 942 | |
7d095257 | 943 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
d757762b DD |
944 | return 0; |
945 | ||
1da177e4 | 946 | restarts = 0; |
1da177e4 LT |
947 | |
948 | again: | |
8a7b8a89 | 949 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
950 | /* |
951 | * dqpurge_all() also takes the mplist lock and iterate thru all dquots | |
952 | * in quotaoff. However, if the QUOTA_ACTIVE bits are not cleared | |
953 | * when we have the mplist lock, we know that dquots will be consistent | |
954 | * as long as we have it locked. | |
955 | */ | |
3a25404b | 956 | if (!XFS_IS_QUOTA_ON(mp)) { |
8a7b8a89 | 957 | mutex_unlock(&q->qi_dqlist_lock); |
014c2544 | 958 | return 0; |
1da177e4 | 959 | } |
8a7b8a89 CH |
960 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
961 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 LT |
962 | /* |
963 | * If this is vfs_sync calling, then skip the dquots that | |
964 | * don't 'seem' to be dirty. ie. don't acquire dqlock. | |
965 | * This is very similar to what xfs_sync does with inodes. | |
966 | */ | |
8b5403a6 CH |
967 | if (flags & SYNC_TRYLOCK) { |
968 | if (!XFS_DQ_IS_DIRTY(dqp)) | |
1da177e4 | 969 | continue; |
8b5403a6 | 970 | if (!xfs_qm_dqlock_nowait(dqp)) |
1da177e4 LT |
971 | continue; |
972 | } else { | |
973 | xfs_dqlock(dqp); | |
974 | } | |
975 | ||
976 | /* | |
977 | * Now, find out for sure if this dquot is dirty or not. | |
978 | */ | |
979 | if (! XFS_DQ_IS_DIRTY(dqp)) { | |
980 | xfs_dqunlock(dqp); | |
981 | continue; | |
982 | } | |
983 | ||
984 | /* XXX a sentinel would be better */ | |
8a7b8a89 | 985 | recl = q->qi_dqreclaims; |
e1f49cf2 | 986 | if (!xfs_dqflock_nowait(dqp)) { |
8b5403a6 | 987 | if (flags & SYNC_TRYLOCK) { |
1da177e4 LT |
988 | xfs_dqunlock(dqp); |
989 | continue; | |
990 | } | |
991 | /* | |
992 | * If we can't grab the flush lock then if the caller | |
c41564b5 | 993 | * really wanted us to give this our best shot, so |
1da177e4 LT |
994 | * see if we can give a push to the buffer before we wait |
995 | * on the flush lock. At this point, we know that | |
c41564b5 | 996 | * even though the dquot is being flushed, |
1da177e4 LT |
997 | * it has (new) dirty data. |
998 | */ | |
999 | xfs_qm_dqflock_pushbuf_wait(dqp); | |
1000 | } | |
1001 | /* | |
1002 | * Let go of the mplist lock. We don't want to hold it | |
1003 | * across a disk write | |
1004 | */ | |
8a7b8a89 | 1005 | mutex_unlock(&q->qi_dqlist_lock); |
20026d92 | 1006 | error = xfs_qm_dqflush(dqp, flags); |
1da177e4 LT |
1007 | xfs_dqunlock(dqp); |
1008 | if (error && XFS_FORCED_SHUTDOWN(mp)) | |
014c2544 | 1009 | return 0; /* Need to prevent umount failure */ |
1da177e4 | 1010 | else if (error) |
014c2544 | 1011 | return error; |
1da177e4 | 1012 | |
8a7b8a89 CH |
1013 | mutex_lock(&q->qi_dqlist_lock); |
1014 | if (recl != q->qi_dqreclaims) { | |
1da177e4 LT |
1015 | if (++restarts >= XFS_QM_SYNC_MAX_RESTARTS) |
1016 | break; | |
1017 | ||
8a7b8a89 | 1018 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 LT |
1019 | goto again; |
1020 | } | |
1021 | } | |
1022 | ||
8a7b8a89 | 1023 | mutex_unlock(&q->qi_dqlist_lock); |
014c2544 | 1024 | return 0; |
1da177e4 LT |
1025 | } |
1026 | ||
a4edd1da CH |
1027 | /* |
1028 | * The hash chains and the mplist use the same xfs_dqhash structure as | |
1029 | * their list head, but we can take the mplist qh_lock and one of the | |
1030 | * hash qh_locks at the same time without any problem as they aren't | |
1031 | * related. | |
1032 | */ | |
1033 | static struct lock_class_key xfs_quota_mplist_class; | |
1da177e4 LT |
1034 | |
1035 | /* | |
1036 | * This initializes all the quota information that's kept in the | |
1037 | * mount structure | |
1038 | */ | |
ba0f32d4 | 1039 | STATIC int |
1da177e4 LT |
1040 | xfs_qm_init_quotainfo( |
1041 | xfs_mount_t *mp) | |
1042 | { | |
1043 | xfs_quotainfo_t *qinf; | |
1044 | int error; | |
1045 | xfs_dquot_t *dqp; | |
1046 | ||
1047 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
1048 | ||
1049 | /* | |
1050 | * Tell XQM that we exist as soon as possible. | |
1051 | */ | |
1052 | if ((error = xfs_qm_hold_quotafs_ref(mp))) { | |
014c2544 | 1053 | return error; |
1da177e4 LT |
1054 | } |
1055 | ||
1056 | qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); | |
1057 | ||
1058 | /* | |
1059 | * See if quotainodes are setup, and if not, allocate them, | |
1060 | * and change the superblock accordingly. | |
1061 | */ | |
1062 | if ((error = xfs_qm_init_quotainos(mp))) { | |
f0e2d93c | 1063 | kmem_free(qinf); |
1da177e4 | 1064 | mp->m_quotainfo = NULL; |
014c2544 | 1065 | return error; |
1da177e4 LT |
1066 | } |
1067 | ||
3a25404b DC |
1068 | INIT_LIST_HEAD(&qinf->qi_dqlist); |
1069 | mutex_init(&qinf->qi_dqlist_lock); | |
1070 | lockdep_set_class(&qinf->qi_dqlist_lock, &xfs_quota_mplist_class); | |
a4edd1da | 1071 | |
1da177e4 LT |
1072 | qinf->qi_dqreclaims = 0; |
1073 | ||
1074 | /* mutex used to serialize quotaoffs */ | |
794ee1ba | 1075 | mutex_init(&qinf->qi_quotaofflock); |
1da177e4 LT |
1076 | |
1077 | /* Precalc some constants */ | |
1078 | qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
1079 | ASSERT(qinf->qi_dqchunklen); | |
1080 | qinf->qi_dqperchunk = BBTOB(qinf->qi_dqchunklen); | |
1081 | do_div(qinf->qi_dqperchunk, sizeof(xfs_dqblk_t)); | |
1082 | ||
1083 | mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); | |
1084 | ||
1085 | /* | |
1086 | * We try to get the limits from the superuser's limits fields. | |
1087 | * This is quite hacky, but it is standard quota practice. | |
1088 | * We look at the USR dquot with id == 0 first, but if user quotas | |
1089 | * are not enabled we goto the GRP dquot with id == 0. | |
1090 | * We don't really care to keep separate default limits for user | |
1091 | * and group quotas, at least not at this point. | |
1092 | */ | |
1093 | error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)0, | |
c8ad20ff NS |
1094 | XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : |
1095 | (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : | |
1096 | XFS_DQ_PROJ), | |
1da177e4 LT |
1097 | XFS_QMOPT_DQSUSER|XFS_QMOPT_DOWARN, |
1098 | &dqp); | |
1099 | if (! error) { | |
1100 | xfs_disk_dquot_t *ddqp = &dqp->q_core; | |
1101 | ||
1102 | /* | |
1103 | * The warnings and timers set the grace period given to | |
1104 | * a user or group before he or she can not perform any | |
1105 | * more writing. If it is zero, a default is used. | |
1106 | */ | |
1149d96a CH |
1107 | qinf->qi_btimelimit = ddqp->d_btimer ? |
1108 | be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; | |
1109 | qinf->qi_itimelimit = ddqp->d_itimer ? | |
1110 | be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; | |
1111 | qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? | |
1112 | be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; | |
1113 | qinf->qi_bwarnlimit = ddqp->d_bwarns ? | |
1114 | be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; | |
1115 | qinf->qi_iwarnlimit = ddqp->d_iwarns ? | |
1116 | be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; | |
1117 | qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? | |
1118 | be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; | |
1119 | qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); | |
1120 | qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); | |
1121 | qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); | |
1122 | qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); | |
1123 | qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); | |
1124 | qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); | |
1da177e4 LT |
1125 | |
1126 | /* | |
1127 | * We sent the XFS_QMOPT_DQSUSER flag to dqget because | |
1128 | * we don't want this dquot cached. We haven't done a | |
1129 | * quotacheck yet, and quotacheck doesn't like incore dquots. | |
1130 | */ | |
1131 | xfs_qm_dqdestroy(dqp); | |
1132 | } else { | |
1133 | qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; | |
1134 | qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; | |
1135 | qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; | |
1136 | qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; | |
1137 | qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; | |
06d10dd9 | 1138 | qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; |
1da177e4 LT |
1139 | } |
1140 | ||
014c2544 | 1141 | return 0; |
1da177e4 LT |
1142 | } |
1143 | ||
1144 | ||
1145 | /* | |
1146 | * Gets called when unmounting a filesystem or when all quotas get | |
1147 | * turned off. | |
1148 | * This purges the quota inodes, destroys locks and frees itself. | |
1149 | */ | |
1150 | void | |
1151 | xfs_qm_destroy_quotainfo( | |
1152 | xfs_mount_t *mp) | |
1153 | { | |
1154 | xfs_quotainfo_t *qi; | |
1155 | ||
1156 | qi = mp->m_quotainfo; | |
1157 | ASSERT(qi != NULL); | |
1158 | ASSERT(xfs_Gqm != NULL); | |
1159 | ||
1160 | /* | |
1161 | * Release the reference that XQM kept, so that we know | |
1162 | * when the XQM structure should be freed. We cannot assume | |
1163 | * that xfs_Gqm is non-null after this point. | |
1164 | */ | |
1165 | xfs_qm_rele_quotafs_ref(mp); | |
1166 | ||
3a25404b DC |
1167 | ASSERT(list_empty(&qi->qi_dqlist)); |
1168 | mutex_destroy(&qi->qi_dqlist_lock); | |
1da177e4 LT |
1169 | |
1170 | if (qi->qi_uquotaip) { | |
26cc0021 | 1171 | IRELE(qi->qi_uquotaip); |
1da177e4 LT |
1172 | qi->qi_uquotaip = NULL; /* paranoia */ |
1173 | } | |
1174 | if (qi->qi_gquotaip) { | |
26cc0021 | 1175 | IRELE(qi->qi_gquotaip); |
1da177e4 LT |
1176 | qi->qi_gquotaip = NULL; |
1177 | } | |
1178 | mutex_destroy(&qi->qi_quotaofflock); | |
f0e2d93c | 1179 | kmem_free(qi); |
1da177e4 LT |
1180 | mp->m_quotainfo = NULL; |
1181 | } | |
1182 | ||
1183 | ||
1184 | ||
1185 | /* ------------------- PRIVATE STATIC FUNCTIONS ----------------------- */ | |
1186 | ||
1187 | /* ARGSUSED */ | |
1188 | STATIC void | |
1189 | xfs_qm_list_init( | |
1190 | xfs_dqlist_t *list, | |
1191 | char *str, | |
1192 | int n) | |
1193 | { | |
794ee1ba | 1194 | mutex_init(&list->qh_lock); |
e6a81f13 | 1195 | INIT_LIST_HEAD(&list->qh_list); |
1da177e4 LT |
1196 | list->qh_version = 0; |
1197 | list->qh_nelems = 0; | |
1198 | } | |
1199 | ||
1200 | STATIC void | |
1201 | xfs_qm_list_destroy( | |
1202 | xfs_dqlist_t *list) | |
1203 | { | |
1204 | mutex_destroy(&(list->qh_lock)); | |
1205 | } | |
1206 | ||
1207 | ||
1208 | /* | |
1209 | * Stripped down version of dqattach. This doesn't attach, or even look at the | |
1210 | * dquots attached to the inode. The rationale is that there won't be any | |
1211 | * attached at the time this is called from quotacheck. | |
1212 | */ | |
1213 | STATIC int | |
1214 | xfs_qm_dqget_noattach( | |
1215 | xfs_inode_t *ip, | |
1216 | xfs_dquot_t **O_udqpp, | |
1217 | xfs_dquot_t **O_gdqpp) | |
1218 | { | |
1219 | int error; | |
1220 | xfs_mount_t *mp; | |
1221 | xfs_dquot_t *udqp, *gdqp; | |
1222 | ||
579aa9ca | 1223 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
1224 | mp = ip->i_mount; |
1225 | udqp = NULL; | |
1226 | gdqp = NULL; | |
1227 | ||
1228 | if (XFS_IS_UQUOTA_ON(mp)) { | |
1229 | ASSERT(ip->i_udquot == NULL); | |
1230 | /* | |
1231 | * We want the dquot allocated if it doesn't exist. | |
1232 | */ | |
1233 | if ((error = xfs_qm_dqget(mp, ip, ip->i_d.di_uid, XFS_DQ_USER, | |
1234 | XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, | |
1235 | &udqp))) { | |
1236 | /* | |
1237 | * Shouldn't be able to turn off quotas here. | |
1238 | */ | |
1239 | ASSERT(error != ESRCH); | |
1240 | ASSERT(error != ENOENT); | |
014c2544 | 1241 | return error; |
1da177e4 LT |
1242 | } |
1243 | ASSERT(udqp); | |
1244 | } | |
1245 | ||
c8ad20ff | 1246 | if (XFS_IS_OQUOTA_ON(mp)) { |
1da177e4 LT |
1247 | ASSERT(ip->i_gdquot == NULL); |
1248 | if (udqp) | |
1249 | xfs_dqunlock(udqp); | |
c8ad20ff NS |
1250 | error = XFS_IS_GQUOTA_ON(mp) ? |
1251 | xfs_qm_dqget(mp, ip, | |
1252 | ip->i_d.di_gid, XFS_DQ_GROUP, | |
1253 | XFS_QMOPT_DQALLOC|XFS_QMOPT_DOWARN, | |
1254 | &gdqp) : | |
1255 | xfs_qm_dqget(mp, ip, | |
1256 | ip->i_d.di_projid, XFS_DQ_PROJ, | |
1257 | XFS_QMOPT_DQALLOC|XFS_QMOPT_DOWARN, | |
1258 | &gdqp); | |
1259 | if (error) { | |
1da177e4 LT |
1260 | if (udqp) |
1261 | xfs_qm_dqrele(udqp); | |
1262 | ASSERT(error != ESRCH); | |
1263 | ASSERT(error != ENOENT); | |
014c2544 | 1264 | return error; |
1da177e4 LT |
1265 | } |
1266 | ASSERT(gdqp); | |
1267 | ||
1268 | /* Reacquire the locks in the right order */ | |
1269 | if (udqp) { | |
1270 | if (! xfs_qm_dqlock_nowait(udqp)) { | |
1271 | xfs_dqunlock(gdqp); | |
1272 | xfs_dqlock(udqp); | |
1273 | xfs_dqlock(gdqp); | |
1274 | } | |
1275 | } | |
1276 | } | |
1277 | ||
1278 | *O_udqpp = udqp; | |
1279 | *O_gdqpp = gdqp; | |
1280 | ||
1281 | #ifdef QUOTADEBUG | |
1282 | if (udqp) ASSERT(XFS_DQ_IS_LOCKED(udqp)); | |
1283 | if (gdqp) ASSERT(XFS_DQ_IS_LOCKED(gdqp)); | |
1284 | #endif | |
014c2544 | 1285 | return 0; |
1da177e4 LT |
1286 | } |
1287 | ||
1288 | /* | |
1289 | * Create an inode and return with a reference already taken, but unlocked | |
1290 | * This is how we create quota inodes | |
1291 | */ | |
1292 | STATIC int | |
1293 | xfs_qm_qino_alloc( | |
1294 | xfs_mount_t *mp, | |
1295 | xfs_inode_t **ip, | |
1296 | __int64_t sbfields, | |
1297 | uint flags) | |
1298 | { | |
1299 | xfs_trans_t *tp; | |
1300 | int error; | |
1da177e4 LT |
1301 | int committed; |
1302 | ||
061f7209 | 1303 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); |
1da177e4 LT |
1304 | if ((error = xfs_trans_reserve(tp, |
1305 | XFS_QM_QINOCREATE_SPACE_RES(mp), | |
1306 | XFS_CREATE_LOG_RES(mp), 0, | |
1307 | XFS_TRANS_PERM_LOG_RES, | |
1308 | XFS_CREATE_LOG_COUNT))) { | |
1309 | xfs_trans_cancel(tp, 0); | |
014c2544 | 1310 | return error; |
1da177e4 | 1311 | } |
1da177e4 | 1312 | |
b11f94d5 | 1313 | if ((error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, |
dae81d47 | 1314 | &xfs_zerocr, 0, 1, ip, &committed))) { |
1da177e4 LT |
1315 | xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | |
1316 | XFS_TRANS_ABORT); | |
014c2544 | 1317 | return error; |
1da177e4 LT |
1318 | } |
1319 | ||
1320 | /* | |
1321 | * Keep an extra reference to this quota inode. This inode is | |
1322 | * locked exclusively and joined to the transaction already. | |
1323 | */ | |
579aa9ca | 1324 | ASSERT(xfs_isilocked(*ip, XFS_ILOCK_EXCL)); |
26cc0021 | 1325 | IHOLD(*ip); |
1da177e4 LT |
1326 | |
1327 | /* | |
1328 | * Make the changes in the superblock, and log those too. | |
1329 | * sbfields arg may contain fields other than *QUOTINO; | |
1330 | * VERSIONNUM for example. | |
1331 | */ | |
3685c2a1 | 1332 | spin_lock(&mp->m_sb_lock); |
1da177e4 LT |
1333 | if (flags & XFS_QMOPT_SBVERSION) { |
1334 | #if defined(DEBUG) && defined(XFS_LOUD_RECOVERY) | |
1335 | unsigned oldv = mp->m_sb.sb_versionnum; | |
1336 | #endif | |
62118709 | 1337 | ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); |
1da177e4 LT |
1338 | ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
1339 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)) == | |
1340 | (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1341 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)); | |
1342 | ||
62118709 | 1343 | xfs_sb_version_addquota(&mp->m_sb); |
1da177e4 LT |
1344 | mp->m_sb.sb_uquotino = NULLFSINO; |
1345 | mp->m_sb.sb_gquotino = NULLFSINO; | |
1346 | ||
1347 | /* qflags will get updated _after_ quotacheck */ | |
1348 | mp->m_sb.sb_qflags = 0; | |
1349 | #if defined(DEBUG) && defined(XFS_LOUD_RECOVERY) | |
1350 | cmn_err(CE_NOTE, | |
1351 | "Old superblock version %x, converting to %x.", | |
1352 | oldv, mp->m_sb.sb_versionnum); | |
1353 | #endif | |
1354 | } | |
1355 | if (flags & XFS_QMOPT_UQUOTA) | |
1356 | mp->m_sb.sb_uquotino = (*ip)->i_ino; | |
1357 | else | |
1358 | mp->m_sb.sb_gquotino = (*ip)->i_ino; | |
3685c2a1 | 1359 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
1360 | xfs_mod_sb(tp, sbfields); |
1361 | ||
1c72bf90 | 1362 | if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { |
1da177e4 | 1363 | xfs_fs_cmn_err(CE_ALERT, mp, "XFS qino_alloc failed!"); |
014c2544 | 1364 | return error; |
1da177e4 | 1365 | } |
014c2544 | 1366 | return 0; |
1da177e4 LT |
1367 | } |
1368 | ||
1369 | ||
5b139738 | 1370 | STATIC void |
1da177e4 LT |
1371 | xfs_qm_reset_dqcounts( |
1372 | xfs_mount_t *mp, | |
1373 | xfs_buf_t *bp, | |
1374 | xfs_dqid_t id, | |
1375 | uint type) | |
1376 | { | |
1377 | xfs_disk_dquot_t *ddq; | |
1378 | int j; | |
1379 | ||
0b1b213f CH |
1380 | trace_xfs_reset_dqcounts(bp, _RET_IP_); |
1381 | ||
1da177e4 LT |
1382 | /* |
1383 | * Reset all counters and timers. They'll be | |
1384 | * started afresh by xfs_qm_quotacheck. | |
1385 | */ | |
1386 | #ifdef DEBUG | |
1387 | j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
1388 | do_div(j, sizeof(xfs_dqblk_t)); | |
8a7b8a89 | 1389 | ASSERT(mp->m_quotainfo->qi_dqperchunk == j); |
1da177e4 LT |
1390 | #endif |
1391 | ddq = (xfs_disk_dquot_t *)XFS_BUF_PTR(bp); | |
8a7b8a89 | 1392 | for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { |
1da177e4 LT |
1393 | /* |
1394 | * Do a sanity check, and if needed, repair the dqblk. Don't | |
1395 | * output any warnings because it's perfectly possible to | |
c41564b5 | 1396 | * find uninitialised dquot blks. See comment in xfs_qm_dqcheck. |
1da177e4 LT |
1397 | */ |
1398 | (void) xfs_qm_dqcheck(ddq, id+j, type, XFS_QMOPT_DQREPAIR, | |
1399 | "xfs_quotacheck"); | |
1149d96a CH |
1400 | ddq->d_bcount = 0; |
1401 | ddq->d_icount = 0; | |
1402 | ddq->d_rtbcount = 0; | |
1403 | ddq->d_btimer = 0; | |
1404 | ddq->d_itimer = 0; | |
1405 | ddq->d_rtbtimer = 0; | |
1406 | ddq->d_bwarns = 0; | |
1407 | ddq->d_iwarns = 0; | |
1408 | ddq->d_rtbwarns = 0; | |
1da177e4 LT |
1409 | ddq = (xfs_disk_dquot_t *) ((xfs_dqblk_t *)ddq + 1); |
1410 | } | |
1da177e4 LT |
1411 | } |
1412 | ||
1413 | STATIC int | |
1414 | xfs_qm_dqiter_bufs( | |
1415 | xfs_mount_t *mp, | |
1416 | xfs_dqid_t firstid, | |
1417 | xfs_fsblock_t bno, | |
1418 | xfs_filblks_t blkcnt, | |
1419 | uint flags) | |
1420 | { | |
1421 | xfs_buf_t *bp; | |
1422 | int error; | |
1423 | int notcommitted; | |
1424 | int incr; | |
c8ad20ff | 1425 | int type; |
1da177e4 LT |
1426 | |
1427 | ASSERT(blkcnt > 0); | |
1428 | notcommitted = 0; | |
1429 | incr = (blkcnt > XFS_QM_MAX_DQCLUSTER_LOGSZ) ? | |
1430 | XFS_QM_MAX_DQCLUSTER_LOGSZ : blkcnt; | |
c8ad20ff NS |
1431 | type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : |
1432 | (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); | |
1da177e4 LT |
1433 | error = 0; |
1434 | ||
1435 | /* | |
1436 | * Blkcnt arg can be a very big number, and might even be | |
1437 | * larger than the log itself. So, we have to break it up into | |
1438 | * manageable-sized transactions. | |
1439 | * Note that we don't start a permanent transaction here; we might | |
1440 | * not be able to get a log reservation for the whole thing up front, | |
1441 | * and we don't really care to either, because we just discard | |
1442 | * everything if we were to crash in the middle of this loop. | |
1443 | */ | |
1444 | while (blkcnt--) { | |
1445 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1446 | XFS_FSB_TO_DADDR(mp, bno), | |
8a7b8a89 | 1447 | mp->m_quotainfo->qi_dqchunklen, 0, &bp); |
1da177e4 LT |
1448 | if (error) |
1449 | break; | |
1450 | ||
5b139738 | 1451 | xfs_qm_reset_dqcounts(mp, bp, firstid, type); |
1da177e4 LT |
1452 | xfs_bdwrite(mp, bp); |
1453 | /* | |
1454 | * goto the next block. | |
1455 | */ | |
1456 | bno++; | |
8a7b8a89 | 1457 | firstid += mp->m_quotainfo->qi_dqperchunk; |
1da177e4 | 1458 | } |
014c2544 | 1459 | return error; |
1da177e4 LT |
1460 | } |
1461 | ||
1462 | /* | |
c8ad20ff | 1463 | * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a |
1da177e4 LT |
1464 | * caller supplied function for every chunk of dquots that we find. |
1465 | */ | |
1466 | STATIC int | |
1467 | xfs_qm_dqiterate( | |
1468 | xfs_mount_t *mp, | |
1469 | xfs_inode_t *qip, | |
1470 | uint flags) | |
1471 | { | |
1472 | xfs_bmbt_irec_t *map; | |
1473 | int i, nmaps; /* number of map entries */ | |
1474 | int error; /* return value */ | |
1475 | xfs_fileoff_t lblkno; | |
1476 | xfs_filblks_t maxlblkcnt; | |
1477 | xfs_dqid_t firstid; | |
1478 | xfs_fsblock_t rablkno; | |
1479 | xfs_filblks_t rablkcnt; | |
1480 | ||
1481 | error = 0; | |
1482 | /* | |
c41564b5 | 1483 | * This looks racy, but we can't keep an inode lock across a |
1da177e4 LT |
1484 | * trans_reserve. But, this gets called during quotacheck, and that |
1485 | * happens only at mount time which is single threaded. | |
1486 | */ | |
1487 | if (qip->i_d.di_nblocks == 0) | |
014c2544 | 1488 | return 0; |
1da177e4 LT |
1489 | |
1490 | map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); | |
1491 | ||
1492 | lblkno = 0; | |
1493 | maxlblkcnt = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp)); | |
1494 | do { | |
1495 | nmaps = XFS_DQITER_MAP_SIZE; | |
1496 | /* | |
1497 | * We aren't changing the inode itself. Just changing | |
1498 | * some of its data. No new blocks are added here, and | |
1499 | * the inode is never added to the transaction. | |
1500 | */ | |
1501 | xfs_ilock(qip, XFS_ILOCK_SHARED); | |
1502 | error = xfs_bmapi(NULL, qip, lblkno, | |
1503 | maxlblkcnt - lblkno, | |
1504 | XFS_BMAPI_METADATA, | |
1505 | NULL, | |
3e57ecf6 | 1506 | 0, map, &nmaps, NULL, NULL); |
1da177e4 LT |
1507 | xfs_iunlock(qip, XFS_ILOCK_SHARED); |
1508 | if (error) | |
1509 | break; | |
1510 | ||
1511 | ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); | |
1512 | for (i = 0; i < nmaps; i++) { | |
1513 | ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); | |
1514 | ASSERT(map[i].br_blockcount); | |
1515 | ||
1516 | ||
1517 | lblkno += map[i].br_blockcount; | |
1518 | ||
1519 | if (map[i].br_startblock == HOLESTARTBLOCK) | |
1520 | continue; | |
1521 | ||
1522 | firstid = (xfs_dqid_t) map[i].br_startoff * | |
8a7b8a89 | 1523 | mp->m_quotainfo->qi_dqperchunk; |
1da177e4 LT |
1524 | /* |
1525 | * Do a read-ahead on the next extent. | |
1526 | */ | |
1527 | if ((i+1 < nmaps) && | |
1528 | (map[i+1].br_startblock != HOLESTARTBLOCK)) { | |
1529 | rablkcnt = map[i+1].br_blockcount; | |
1530 | rablkno = map[i+1].br_startblock; | |
1531 | while (rablkcnt--) { | |
1532 | xfs_baread(mp->m_ddev_targp, | |
1533 | XFS_FSB_TO_DADDR(mp, rablkno), | |
8a7b8a89 | 1534 | mp->m_quotainfo->qi_dqchunklen); |
1da177e4 LT |
1535 | rablkno++; |
1536 | } | |
1537 | } | |
1538 | /* | |
1539 | * Iterate thru all the blks in the extent and | |
1540 | * reset the counters of all the dquots inside them. | |
1541 | */ | |
1542 | if ((error = xfs_qm_dqiter_bufs(mp, | |
1543 | firstid, | |
1544 | map[i].br_startblock, | |
1545 | map[i].br_blockcount, | |
1546 | flags))) { | |
1547 | break; | |
1548 | } | |
1549 | } | |
1550 | ||
1551 | if (error) | |
1552 | break; | |
1553 | } while (nmaps > 0); | |
1554 | ||
f0e2d93c | 1555 | kmem_free(map); |
1da177e4 | 1556 | |
014c2544 | 1557 | return error; |
1da177e4 LT |
1558 | } |
1559 | ||
1560 | /* | |
1561 | * Called by dqusage_adjust in doing a quotacheck. | |
1562 | * Given the inode, and a dquot (either USR or GRP, doesn't matter), | |
1563 | * this updates its incore copy as well as the buffer copy. This is | |
1564 | * so that once the quotacheck is done, we can just log all the buffers, | |
1565 | * as opposed to logging numerous updates to individual dquots. | |
1566 | */ | |
1567 | STATIC void | |
1568 | xfs_qm_quotacheck_dqadjust( | |
1569 | xfs_dquot_t *dqp, | |
1570 | xfs_qcnt_t nblks, | |
1571 | xfs_qcnt_t rtblks) | |
1572 | { | |
1573 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
0b1b213f CH |
1574 | |
1575 | trace_xfs_dqadjust(dqp); | |
1576 | ||
1da177e4 LT |
1577 | /* |
1578 | * Adjust the inode count and the block count to reflect this inode's | |
1579 | * resource usage. | |
1580 | */ | |
413d57c9 | 1581 | be64_add_cpu(&dqp->q_core.d_icount, 1); |
1da177e4 LT |
1582 | dqp->q_res_icount++; |
1583 | if (nblks) { | |
413d57c9 | 1584 | be64_add_cpu(&dqp->q_core.d_bcount, nblks); |
1da177e4 LT |
1585 | dqp->q_res_bcount += nblks; |
1586 | } | |
1587 | if (rtblks) { | |
413d57c9 | 1588 | be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); |
1da177e4 LT |
1589 | dqp->q_res_rtbcount += rtblks; |
1590 | } | |
1591 | ||
1592 | /* | |
1593 | * Set default limits, adjust timers (since we changed usages) | |
1594 | */ | |
1595 | if (! XFS_IS_SUSER_DQUOT(dqp)) { | |
1596 | xfs_qm_adjust_dqlimits(dqp->q_mount, &dqp->q_core); | |
1597 | xfs_qm_adjust_dqtimers(dqp->q_mount, &dqp->q_core); | |
1598 | } | |
1599 | ||
1600 | dqp->dq_flags |= XFS_DQ_DIRTY; | |
1601 | } | |
1602 | ||
1603 | STATIC int | |
1604 | xfs_qm_get_rtblks( | |
1605 | xfs_inode_t *ip, | |
1606 | xfs_qcnt_t *O_rtblks) | |
1607 | { | |
1608 | xfs_filblks_t rtblks; /* total rt blks */ | |
4eea22f0 | 1609 | xfs_extnum_t idx; /* extent record index */ |
1da177e4 LT |
1610 | xfs_ifork_t *ifp; /* inode fork pointer */ |
1611 | xfs_extnum_t nextents; /* number of extent entries */ | |
1da177e4 LT |
1612 | int error; |
1613 | ||
1614 | ASSERT(XFS_IS_REALTIME_INODE(ip)); | |
1615 | ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); | |
1616 | if (!(ifp->if_flags & XFS_IFEXTENTS)) { | |
1617 | if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) | |
014c2544 | 1618 | return error; |
1da177e4 LT |
1619 | } |
1620 | rtblks = 0; | |
4eea22f0 | 1621 | nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); |
a6f64d4a CH |
1622 | for (idx = 0; idx < nextents; idx++) |
1623 | rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); | |
1da177e4 | 1624 | *O_rtblks = (xfs_qcnt_t)rtblks; |
014c2544 | 1625 | return 0; |
1da177e4 LT |
1626 | } |
1627 | ||
1628 | /* | |
1629 | * callback routine supplied to bulkstat(). Given an inumber, find its | |
1630 | * dquots and update them to account for resources taken by that inode. | |
1631 | */ | |
1632 | /* ARGSUSED */ | |
1633 | STATIC int | |
1634 | xfs_qm_dqusage_adjust( | |
1635 | xfs_mount_t *mp, /* mount point for filesystem */ | |
1636 | xfs_ino_t ino, /* inode number to get data for */ | |
1637 | void __user *buffer, /* not used */ | |
1638 | int ubsize, /* not used */ | |
1639 | void *private_data, /* not used */ | |
1640 | xfs_daddr_t bno, /* starting block of inode cluster */ | |
1641 | int *ubused, /* not used */ | |
1642 | void *dip, /* on-disk inode pointer (not used) */ | |
1643 | int *res) /* result code value */ | |
1644 | { | |
1645 | xfs_inode_t *ip; | |
1646 | xfs_dquot_t *udqp, *gdqp; | |
1647 | xfs_qcnt_t nblks, rtblks; | |
1648 | int error; | |
1649 | ||
1650 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
1651 | ||
1652 | /* | |
1653 | * rootino must have its resources accounted for, not so with the quota | |
1654 | * inodes. | |
1655 | */ | |
1656 | if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) { | |
1657 | *res = BULKSTAT_RV_NOTHING; | |
1658 | return XFS_ERROR(EINVAL); | |
1659 | } | |
1660 | ||
1661 | /* | |
1662 | * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget | |
1663 | * interface expects the inode to be exclusively locked because that's | |
1664 | * the case in all other instances. It's OK that we do this because | |
1665 | * quotacheck is done only at mount time. | |
1666 | */ | |
1667 | if ((error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip, bno))) { | |
1668 | *res = BULKSTAT_RV_NOTHING; | |
014c2544 | 1669 | return error; |
1da177e4 LT |
1670 | } |
1671 | ||
1da177e4 LT |
1672 | /* |
1673 | * Obtain the locked dquots. In case of an error (eg. allocation | |
1674 | * fails for ENOSPC), we return the negative of the error number | |
1675 | * to bulkstat, so that it can get propagated to quotacheck() and | |
1676 | * making us disable quotas for the file system. | |
1677 | */ | |
1678 | if ((error = xfs_qm_dqget_noattach(ip, &udqp, &gdqp))) { | |
1679 | xfs_iput(ip, XFS_ILOCK_EXCL); | |
1680 | *res = BULKSTAT_RV_GIVEUP; | |
014c2544 | 1681 | return error; |
1da177e4 LT |
1682 | } |
1683 | ||
1684 | rtblks = 0; | |
1685 | if (! XFS_IS_REALTIME_INODE(ip)) { | |
1686 | nblks = (xfs_qcnt_t)ip->i_d.di_nblocks; | |
1687 | } else { | |
1688 | /* | |
1689 | * Walk thru the extent list and count the realtime blocks. | |
1690 | */ | |
1691 | if ((error = xfs_qm_get_rtblks(ip, &rtblks))) { | |
1692 | xfs_iput(ip, XFS_ILOCK_EXCL); | |
1693 | if (udqp) | |
1694 | xfs_qm_dqput(udqp); | |
1695 | if (gdqp) | |
1696 | xfs_qm_dqput(gdqp); | |
1697 | *res = BULKSTAT_RV_GIVEUP; | |
014c2544 | 1698 | return error; |
1da177e4 LT |
1699 | } |
1700 | nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; | |
1701 | } | |
1702 | ASSERT(ip->i_delayed_blks == 0); | |
1703 | ||
1704 | /* | |
1705 | * We can't release the inode while holding its dquot locks. | |
1706 | * The inode can go into inactive and might try to acquire the dquotlocks. | |
1707 | * So, just unlock here and do a vn_rele at the end. | |
1708 | */ | |
1709 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1710 | ||
1711 | /* | |
1712 | * Add the (disk blocks and inode) resources occupied by this | |
1713 | * inode to its dquots. We do this adjustment in the incore dquot, | |
1714 | * and also copy the changes to its buffer. | |
1715 | * We don't care about putting these changes in a transaction | |
1716 | * envelope because if we crash in the middle of a 'quotacheck' | |
1717 | * we have to start from the beginning anyway. | |
1718 | * Once we're done, we'll log all the dquot bufs. | |
1719 | * | |
c41564b5 | 1720 | * The *QUOTA_ON checks below may look pretty racy, but quotachecks |
1da177e4 LT |
1721 | * and quotaoffs don't race. (Quotachecks happen at mount time only). |
1722 | */ | |
1723 | if (XFS_IS_UQUOTA_ON(mp)) { | |
1724 | ASSERT(udqp); | |
1725 | xfs_qm_quotacheck_dqadjust(udqp, nblks, rtblks); | |
1726 | xfs_qm_dqput(udqp); | |
1727 | } | |
c8ad20ff | 1728 | if (XFS_IS_OQUOTA_ON(mp)) { |
1da177e4 LT |
1729 | ASSERT(gdqp); |
1730 | xfs_qm_quotacheck_dqadjust(gdqp, nblks, rtblks); | |
1731 | xfs_qm_dqput(gdqp); | |
1732 | } | |
1733 | /* | |
1734 | * Now release the inode. This will send it to 'inactive', and | |
1735 | * possibly even free blocks. | |
1736 | */ | |
43355099 | 1737 | IRELE(ip); |
1da177e4 LT |
1738 | |
1739 | /* | |
1740 | * Goto next inode. | |
1741 | */ | |
1742 | *res = BULKSTAT_RV_DIDONE; | |
014c2544 | 1743 | return 0; |
1da177e4 LT |
1744 | } |
1745 | ||
1746 | /* | |
1747 | * Walk thru all the filesystem inodes and construct a consistent view | |
1748 | * of the disk quota world. If the quotacheck fails, disable quotas. | |
1749 | */ | |
1750 | int | |
1751 | xfs_qm_quotacheck( | |
1752 | xfs_mount_t *mp) | |
1753 | { | |
1754 | int done, count, error; | |
1755 | xfs_ino_t lastino; | |
1756 | size_t structsz; | |
1757 | xfs_inode_t *uip, *gip; | |
1758 | uint flags; | |
1759 | ||
1760 | count = INT_MAX; | |
1761 | structsz = 1; | |
1762 | lastino = 0; | |
1763 | flags = 0; | |
1764 | ||
8a7b8a89 | 1765 | ASSERT(mp->m_quotainfo->qi_uquotaip || mp->m_quotainfo->qi_gquotaip); |
1da177e4 LT |
1766 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1767 | ||
1768 | /* | |
1769 | * There should be no cached dquots. The (simplistic) quotacheck | |
1770 | * algorithm doesn't like that. | |
1771 | */ | |
3a25404b | 1772 | ASSERT(list_empty(&mp->m_quotainfo->qi_dqlist)); |
1da177e4 LT |
1773 | |
1774 | cmn_err(CE_NOTE, "XFS quotacheck %s: Please wait.", mp->m_fsname); | |
1775 | ||
1776 | /* | |
c8ad20ff | 1777 | * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset |
1da177e4 LT |
1778 | * their counters to zero. We need a clean slate. |
1779 | * We don't log our changes till later. | |
1780 | */ | |
8a7b8a89 CH |
1781 | uip = mp->m_quotainfo->qi_uquotaip; |
1782 | if (uip) { | |
1783 | error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA); | |
1784 | if (error) | |
1da177e4 LT |
1785 | goto error_return; |
1786 | flags |= XFS_UQUOTA_CHKD; | |
1787 | } | |
1788 | ||
8a7b8a89 CH |
1789 | gip = mp->m_quotainfo->qi_gquotaip; |
1790 | if (gip) { | |
1791 | error = xfs_qm_dqiterate(mp, gip, XFS_IS_GQUOTA_ON(mp) ? | |
1792 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1793 | if (error) | |
1da177e4 | 1794 | goto error_return; |
c8ad20ff | 1795 | flags |= XFS_OQUOTA_CHKD; |
1da177e4 LT |
1796 | } |
1797 | ||
1798 | do { | |
1799 | /* | |
1800 | * Iterate thru all the inodes in the file system, | |
1801 | * adjusting the corresponding dquot counters in core. | |
1802 | */ | |
1803 | if ((error = xfs_bulkstat(mp, &lastino, &count, | |
1804 | xfs_qm_dqusage_adjust, NULL, | |
9c48876a | 1805 | structsz, NULL, BULKSTAT_FG_IGET, &done))) |
1da177e4 LT |
1806 | break; |
1807 | ||
1808 | } while (! done); | |
1809 | ||
4b8879df DC |
1810 | /* |
1811 | * We've made all the changes that we need to make incore. | |
1812 | * Flush them down to disk buffers if everything was updated | |
1813 | * successfully. | |
1814 | */ | |
1815 | if (!error) | |
20026d92 | 1816 | error = xfs_qm_dqflush_all(mp, 0); |
4b8879df | 1817 | |
1da177e4 LT |
1818 | /* |
1819 | * We can get this error if we couldn't do a dquot allocation inside | |
1820 | * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the | |
1821 | * dirty dquots that might be cached, we just want to get rid of them | |
1822 | * and turn quotaoff. The dquots won't be attached to any of the inodes | |
1823 | * at this point (because we intentionally didn't in dqget_noattach). | |
1824 | */ | |
1825 | if (error) { | |
ee2a4f7c | 1826 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL | XFS_QMOPT_QUOTAOFF); |
1da177e4 LT |
1827 | goto error_return; |
1828 | } | |
1da177e4 LT |
1829 | |
1830 | /* | |
1831 | * We didn't log anything, because if we crashed, we'll have to | |
1832 | * start the quotacheck from scratch anyway. However, we must make | |
1833 | * sure that our dquot changes are secure before we put the | |
1834 | * quotacheck'd stamp on the superblock. So, here we do a synchronous | |
1835 | * flush. | |
1836 | */ | |
1837 | XFS_bflush(mp->m_ddev_targp); | |
1838 | ||
1839 | /* | |
1840 | * If one type of quotas is off, then it will lose its | |
1841 | * quotachecked status, since we won't be doing accounting for | |
1842 | * that type anymore. | |
1843 | */ | |
c8ad20ff | 1844 | mp->m_qflags &= ~(XFS_OQUOTA_CHKD | XFS_UQUOTA_CHKD); |
1da177e4 LT |
1845 | mp->m_qflags |= flags; |
1846 | ||
3a25404b | 1847 | xfs_qm_dquot_list_print(mp); |
1da177e4 LT |
1848 | |
1849 | error_return: | |
1850 | if (error) { | |
1851 | cmn_err(CE_WARN, "XFS quotacheck %s: Unsuccessful (Error %d): " | |
1852 | "Disabling quotas.", | |
1853 | mp->m_fsname, error); | |
1854 | /* | |
1855 | * We must turn off quotas. | |
1856 | */ | |
1857 | ASSERT(mp->m_quotainfo != NULL); | |
1858 | ASSERT(xfs_Gqm != NULL); | |
1859 | xfs_qm_destroy_quotainfo(mp); | |
31d5577b DC |
1860 | if (xfs_mount_reset_sbqflags(mp)) { |
1861 | cmn_err(CE_WARN, "XFS quotacheck %s: " | |
1862 | "Failed to reset quota flags.", mp->m_fsname); | |
1863 | } | |
1da177e4 LT |
1864 | } else { |
1865 | cmn_err(CE_NOTE, "XFS quotacheck %s: Done.", mp->m_fsname); | |
1866 | } | |
1867 | return (error); | |
1868 | } | |
1869 | ||
1870 | /* | |
1871 | * This is called after the superblock has been read in and we're ready to | |
1872 | * iget the quota inodes. | |
1873 | */ | |
1874 | STATIC int | |
1875 | xfs_qm_init_quotainos( | |
1876 | xfs_mount_t *mp) | |
1877 | { | |
1878 | xfs_inode_t *uip, *gip; | |
1879 | int error; | |
1880 | __int64_t sbflags; | |
1881 | uint flags; | |
1882 | ||
1883 | ASSERT(mp->m_quotainfo); | |
1884 | uip = gip = NULL; | |
1885 | sbflags = 0; | |
1886 | flags = 0; | |
1887 | ||
1888 | /* | |
1889 | * Get the uquota and gquota inodes | |
1890 | */ | |
62118709 | 1891 | if (xfs_sb_version_hasquota(&mp->m_sb)) { |
1da177e4 LT |
1892 | if (XFS_IS_UQUOTA_ON(mp) && |
1893 | mp->m_sb.sb_uquotino != NULLFSINO) { | |
1894 | ASSERT(mp->m_sb.sb_uquotino > 0); | |
1895 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, | |
1896 | 0, 0, &uip, 0))) | |
1897 | return XFS_ERROR(error); | |
1898 | } | |
c8ad20ff | 1899 | if (XFS_IS_OQUOTA_ON(mp) && |
1da177e4 LT |
1900 | mp->m_sb.sb_gquotino != NULLFSINO) { |
1901 | ASSERT(mp->m_sb.sb_gquotino > 0); | |
1902 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, | |
1903 | 0, 0, &gip, 0))) { | |
1904 | if (uip) | |
43355099 | 1905 | IRELE(uip); |
1da177e4 LT |
1906 | return XFS_ERROR(error); |
1907 | } | |
1908 | } | |
1909 | } else { | |
1910 | flags |= XFS_QMOPT_SBVERSION; | |
1911 | sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1912 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS); | |
1913 | } | |
1914 | ||
1915 | /* | |
1916 | * Create the two inodes, if they don't exist already. The changes | |
1917 | * made above will get added to a transaction and logged in one of | |
1918 | * the qino_alloc calls below. If the device is readonly, | |
1919 | * temporarily switch to read-write to do this. | |
1920 | */ | |
1921 | if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { | |
1922 | if ((error = xfs_qm_qino_alloc(mp, &uip, | |
1923 | sbflags | XFS_SB_UQUOTINO, | |
1924 | flags | XFS_QMOPT_UQUOTA))) | |
1925 | return XFS_ERROR(error); | |
1926 | ||
1927 | flags &= ~XFS_QMOPT_SBVERSION; | |
1928 | } | |
c8ad20ff NS |
1929 | if (XFS_IS_OQUOTA_ON(mp) && gip == NULL) { |
1930 | flags |= (XFS_IS_GQUOTA_ON(mp) ? | |
1931 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1932 | error = xfs_qm_qino_alloc(mp, &gip, | |
1933 | sbflags | XFS_SB_GQUOTINO, flags); | |
1934 | if (error) { | |
1da177e4 | 1935 | if (uip) |
43355099 | 1936 | IRELE(uip); |
1da177e4 LT |
1937 | |
1938 | return XFS_ERROR(error); | |
1939 | } | |
1940 | } | |
1941 | ||
8a7b8a89 CH |
1942 | mp->m_quotainfo->qi_uquotaip = uip; |
1943 | mp->m_quotainfo->qi_gquotaip = gip; | |
1da177e4 | 1944 | |
014c2544 | 1945 | return 0; |
1da177e4 LT |
1946 | } |
1947 | ||
1948 | ||
368e1361 | 1949 | |
1da177e4 | 1950 | /* |
368e1361 DC |
1951 | * Just pop the least recently used dquot off the freelist and |
1952 | * recycle it. The returned dquot is locked. | |
1da177e4 | 1953 | */ |
368e1361 DC |
1954 | STATIC xfs_dquot_t * |
1955 | xfs_qm_dqreclaim_one(void) | |
1da177e4 | 1956 | { |
368e1361 DC |
1957 | xfs_dquot_t *dqpout; |
1958 | xfs_dquot_t *dqp; | |
1da177e4 | 1959 | int restarts; |
1da177e4 | 1960 | |
1da177e4 | 1961 | restarts = 0; |
368e1361 | 1962 | dqpout = NULL; |
1da177e4 | 1963 | |
368e1361 DC |
1964 | /* lockorder: hashchainlock, freelistlock, mplistlock, dqlock, dqflock */ |
1965 | startagain: | |
3a8406f6 | 1966 | mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 | 1967 | |
3a8406f6 | 1968 | list_for_each_entry(dqp, &xfs_Gqm->qm_dqfrlist, q_freelist) { |
3a25404b | 1969 | struct xfs_mount *mp = dqp->q_mount; |
1da177e4 LT |
1970 | xfs_dqlock(dqp); |
1971 | ||
1972 | /* | |
1973 | * We are racing with dqlookup here. Naturally we don't | |
368e1361 DC |
1974 | * want to reclaim a dquot that lookup wants. We release the |
1975 | * freelist lock and start over, so that lookup will grab | |
1976 | * both the dquot and the freelistlock. | |
1da177e4 LT |
1977 | */ |
1978 | if (dqp->dq_flags & XFS_DQ_WANT) { | |
368e1361 DC |
1979 | ASSERT(! (dqp->dq_flags & XFS_DQ_INACTIVE)); |
1980 | ||
1981 | trace_xfs_dqreclaim_want(dqp); | |
1982 | ||
1da177e4 | 1983 | xfs_dqunlock(dqp); |
3a8406f6 | 1984 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 | 1985 | if (++restarts >= XFS_QM_RECLAIM_MAX_RESTARTS) |
368e1361 | 1986 | return NULL; |
1da177e4 | 1987 | XQM_STATS_INC(xqmstats.xs_qm_dqwants); |
368e1361 | 1988 | goto startagain; |
1da177e4 LT |
1989 | } |
1990 | ||
1991 | /* | |
1992 | * If the dquot is inactive, we are assured that it is | |
1993 | * not on the mplist or the hashlist, and that makes our | |
1994 | * life easier. | |
1995 | */ | |
1996 | if (dqp->dq_flags & XFS_DQ_INACTIVE) { | |
3a25404b | 1997 | ASSERT(mp == NULL); |
1da177e4 | 1998 | ASSERT(! XFS_DQ_IS_DIRTY(dqp)); |
e6a81f13 | 1999 | ASSERT(list_empty(&dqp->q_hashlist)); |
3a25404b | 2000 | ASSERT(list_empty(&dqp->q_mplist)); |
3a8406f6 DC |
2001 | list_del_init(&dqp->q_freelist); |
2002 | xfs_Gqm->qm_dqfrlist_cnt--; | |
368e1361 DC |
2003 | xfs_dqunlock(dqp); |
2004 | dqpout = dqp; | |
1da177e4 | 2005 | XQM_STATS_INC(xqmstats.xs_qm_dqinact_reclaims); |
368e1361 | 2006 | break; |
1da177e4 LT |
2007 | } |
2008 | ||
368e1361 | 2009 | ASSERT(dqp->q_hash); |
3a25404b | 2010 | ASSERT(!list_empty(&dqp->q_mplist)); |
368e1361 | 2011 | |
1da177e4 LT |
2012 | /* |
2013 | * Try to grab the flush lock. If this dquot is in the process of | |
2014 | * getting flushed to disk, we don't want to reclaim it. | |
2015 | */ | |
e1f49cf2 | 2016 | if (!xfs_dqflock_nowait(dqp)) { |
1da177e4 | 2017 | xfs_dqunlock(dqp); |
1da177e4 LT |
2018 | continue; |
2019 | } | |
2020 | ||
2021 | /* | |
2022 | * We have the flush lock so we know that this is not in the | |
2023 | * process of being flushed. So, if this is dirty, flush it | |
2024 | * DELWRI so that we don't get a freelist infested with | |
2025 | * dirty dquots. | |
2026 | */ | |
2027 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
3c56836f | 2028 | int error; |
0b1b213f | 2029 | |
368e1361 | 2030 | trace_xfs_dqreclaim_dirty(dqp); |
0b1b213f | 2031 | |
1da177e4 LT |
2032 | /* |
2033 | * We flush it delayed write, so don't bother | |
368e1361 | 2034 | * releasing the freelist lock. |
1da177e4 | 2035 | */ |
20026d92 | 2036 | error = xfs_qm_dqflush(dqp, 0); |
3c56836f | 2037 | if (error) { |
3a25404b | 2038 | xfs_fs_cmn_err(CE_WARN, mp, |
368e1361 | 2039 | "xfs_qm_dqreclaim: dquot %p flush failed", dqp); |
3c56836f | 2040 | } |
1da177e4 | 2041 | xfs_dqunlock(dqp); /* dqflush unlocks dqflock */ |
1da177e4 LT |
2042 | continue; |
2043 | } | |
368e1361 | 2044 | |
1da177e4 LT |
2045 | /* |
2046 | * We're trying to get the hashlock out of order. This races | |
2047 | * with dqlookup; so, we giveup and goto the next dquot if | |
2048 | * we couldn't get the hashlock. This way, we won't starve | |
2049 | * a dqlookup process that holds the hashlock that is | |
2050 | * waiting for the freelist lock. | |
2051 | */ | |
c9a192dc | 2052 | if (!mutex_trylock(&dqp->q_hash->qh_lock)) { |
368e1361 DC |
2053 | restarts++; |
2054 | goto dqfunlock; | |
1da177e4 | 2055 | } |
368e1361 | 2056 | |
1da177e4 LT |
2057 | /* |
2058 | * This races with dquot allocation code as well as dqflush_all | |
2059 | * and reclaim code. So, if we failed to grab the mplist lock, | |
2060 | * giveup everything and start over. | |
2061 | */ | |
3a25404b | 2062 | if (!mutex_trylock(&mp->m_quotainfo->qi_dqlist_lock)) { |
368e1361 DC |
2063 | restarts++; |
2064 | mutex_unlock(&dqp->q_hash->qh_lock); | |
1da177e4 LT |
2065 | xfs_dqfunlock(dqp); |
2066 | xfs_dqunlock(dqp); | |
3a8406f6 | 2067 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
368e1361 DC |
2068 | if (restarts++ >= XFS_QM_RECLAIM_MAX_RESTARTS) |
2069 | return NULL; | |
2070 | goto startagain; | |
1da177e4 | 2071 | } |
0b1b213f | 2072 | |
1da177e4 | 2073 | ASSERT(dqp->q_nrefs == 0); |
3a25404b DC |
2074 | list_del_init(&dqp->q_mplist); |
2075 | mp->m_quotainfo->qi_dquots--; | |
2076 | mp->m_quotainfo->qi_dqreclaims++; | |
e6a81f13 DC |
2077 | list_del_init(&dqp->q_hashlist); |
2078 | dqp->q_hash->qh_version++; | |
3a8406f6 DC |
2079 | list_del_init(&dqp->q_freelist); |
2080 | xfs_Gqm->qm_dqfrlist_cnt--; | |
368e1361 DC |
2081 | dqpout = dqp; |
2082 | mutex_unlock(&mp->m_quotainfo->qi_dqlist_lock); | |
2083 | mutex_unlock(&dqp->q_hash->qh_lock); | |
2084 | dqfunlock: | |
2085 | xfs_dqfunlock(dqp); | |
1da177e4 | 2086 | xfs_dqunlock(dqp); |
368e1361 DC |
2087 | if (dqpout) |
2088 | break; | |
2089 | if (restarts >= XFS_QM_RECLAIM_MAX_RESTARTS) | |
2090 | return NULL; | |
1da177e4 | 2091 | } |
3a8406f6 | 2092 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
368e1361 | 2093 | return dqpout; |
1da177e4 LT |
2094 | } |
2095 | ||
368e1361 DC |
2096 | /* |
2097 | * Traverse the freelist of dquots and attempt to reclaim a maximum of | |
2098 | * 'howmany' dquots. This operation races with dqlookup(), and attempts to | |
2099 | * favor the lookup function ... | |
2100 | */ | |
2101 | STATIC int | |
2102 | xfs_qm_shake_freelist( | |
2103 | int howmany) | |
2104 | { | |
2105 | int nreclaimed = 0; | |
2106 | xfs_dquot_t *dqp; | |
2107 | ||
2108 | if (howmany <= 0) | |
2109 | return 0; | |
2110 | ||
2111 | while (nreclaimed < howmany) { | |
2112 | dqp = xfs_qm_dqreclaim_one(); | |
2113 | if (!dqp) | |
2114 | return nreclaimed; | |
2115 | xfs_qm_dqdestroy(dqp); | |
2116 | nreclaimed++; | |
2117 | } | |
2118 | return nreclaimed; | |
2119 | } | |
1da177e4 LT |
2120 | |
2121 | /* | |
2122 | * The kmem_shake interface is invoked when memory is running low. | |
2123 | */ | |
2124 | /* ARGSUSED */ | |
2125 | STATIC int | |
51bfb75b | 2126 | xfs_qm_shake(int nr_to_scan, gfp_t gfp_mask) |
1da177e4 LT |
2127 | { |
2128 | int ndqused, nfree, n; | |
2129 | ||
2130 | if (!kmem_shake_allow(gfp_mask)) | |
014c2544 | 2131 | return 0; |
1da177e4 | 2132 | if (!xfs_Gqm) |
014c2544 | 2133 | return 0; |
1da177e4 | 2134 | |
3a8406f6 | 2135 | nfree = xfs_Gqm->qm_dqfrlist_cnt; /* free dquots */ |
1da177e4 LT |
2136 | /* incore dquots in all f/s's */ |
2137 | ndqused = atomic_read(&xfs_Gqm->qm_totaldquots) - nfree; | |
2138 | ||
2139 | ASSERT(ndqused >= 0); | |
2140 | ||
2141 | if (nfree <= ndqused && nfree < ndquot) | |
014c2544 | 2142 | return 0; |
1da177e4 LT |
2143 | |
2144 | ndqused *= xfs_Gqm->qm_dqfree_ratio; /* target # of free dquots */ | |
2145 | n = nfree - ndqused - ndquot; /* # over target */ | |
2146 | ||
2147 | return xfs_qm_shake_freelist(MAX(nfree, n)); | |
2148 | } | |
2149 | ||
2150 | ||
1da177e4 LT |
2151 | /*------------------------------------------------------------------*/ |
2152 | ||
2153 | /* | |
2154 | * Return a new incore dquot. Depending on the number of | |
2155 | * dquots in the system, we either allocate a new one on the kernel heap, | |
2156 | * or reclaim a free one. | |
2157 | * Return value is B_TRUE if we allocated a new dquot, B_FALSE if we managed | |
2158 | * to reclaim an existing one from the freelist. | |
2159 | */ | |
2160 | boolean_t | |
2161 | xfs_qm_dqalloc_incore( | |
2162 | xfs_dquot_t **O_dqpp) | |
2163 | { | |
2164 | xfs_dquot_t *dqp; | |
2165 | ||
2166 | /* | |
2167 | * Check against high water mark to see if we want to pop | |
2168 | * a nincompoop dquot off the freelist. | |
2169 | */ | |
2170 | if (atomic_read(&xfs_Gqm->qm_totaldquots) >= ndquot) { | |
2171 | /* | |
2172 | * Try to recycle a dquot from the freelist. | |
2173 | */ | |
2174 | if ((dqp = xfs_qm_dqreclaim_one())) { | |
2175 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaims); | |
2176 | /* | |
2177 | * Just zero the core here. The rest will get | |
2178 | * reinitialized by caller. XXX we shouldn't even | |
2179 | * do this zero ... | |
2180 | */ | |
2181 | memset(&dqp->q_core, 0, sizeof(dqp->q_core)); | |
2182 | *O_dqpp = dqp; | |
014c2544 | 2183 | return B_FALSE; |
1da177e4 LT |
2184 | } |
2185 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaim_misses); | |
2186 | } | |
2187 | ||
2188 | /* | |
2189 | * Allocate a brand new dquot on the kernel heap and return it | |
2190 | * to the caller to initialize. | |
2191 | */ | |
2192 | ASSERT(xfs_Gqm->qm_dqzone != NULL); | |
2193 | *O_dqpp = kmem_zone_zalloc(xfs_Gqm->qm_dqzone, KM_SLEEP); | |
2194 | atomic_inc(&xfs_Gqm->qm_totaldquots); | |
2195 | ||
014c2544 | 2196 | return B_TRUE; |
1da177e4 LT |
2197 | } |
2198 | ||
2199 | ||
2200 | /* | |
2201 | * Start a transaction and write the incore superblock changes to | |
2202 | * disk. flags parameter indicates which fields have changed. | |
2203 | */ | |
2204 | int | |
2205 | xfs_qm_write_sb_changes( | |
2206 | xfs_mount_t *mp, | |
2207 | __int64_t flags) | |
2208 | { | |
2209 | xfs_trans_t *tp; | |
2210 | int error; | |
2211 | ||
2212 | #ifdef QUOTADEBUG | |
2213 | cmn_err(CE_NOTE, "Writing superblock quota changes :%s", mp->m_fsname); | |
2214 | #endif | |
2215 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); | |
2216 | if ((error = xfs_trans_reserve(tp, 0, | |
2217 | mp->m_sb.sb_sectsize + 128, 0, | |
2218 | 0, | |
2219 | XFS_DEFAULT_LOG_COUNT))) { | |
2220 | xfs_trans_cancel(tp, 0); | |
014c2544 | 2221 | return error; |
1da177e4 LT |
2222 | } |
2223 | ||
2224 | xfs_mod_sb(tp, flags); | |
e5720eec | 2225 | error = xfs_trans_commit(tp, 0); |
1da177e4 | 2226 | |
e5720eec | 2227 | return error; |
1da177e4 LT |
2228 | } |
2229 | ||
2230 | ||
2231 | /* --------------- utility functions for vnodeops ---------------- */ | |
2232 | ||
2233 | ||
2234 | /* | |
2235 | * Given an inode, a uid and gid (from cred_t) make sure that we have | |
2236 | * allocated relevant dquot(s) on disk, and that we won't exceed inode | |
2237 | * quotas by creating this file. | |
2238 | * This also attaches dquot(s) to the given inode after locking it, | |
2239 | * and returns the dquots corresponding to the uid and/or gid. | |
2240 | * | |
2241 | * in : inode (unlocked) | |
2242 | * out : udquot, gdquot with references taken and unlocked | |
2243 | */ | |
2244 | int | |
2245 | xfs_qm_vop_dqalloc( | |
7d095257 CH |
2246 | struct xfs_inode *ip, |
2247 | uid_t uid, | |
2248 | gid_t gid, | |
2249 | prid_t prid, | |
2250 | uint flags, | |
2251 | struct xfs_dquot **O_udqpp, | |
2252 | struct xfs_dquot **O_gdqpp) | |
1da177e4 | 2253 | { |
7d095257 CH |
2254 | struct xfs_mount *mp = ip->i_mount; |
2255 | struct xfs_dquot *uq, *gq; | |
2256 | int error; | |
2257 | uint lockflags; | |
1da177e4 | 2258 | |
7d095257 | 2259 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
1da177e4 LT |
2260 | return 0; |
2261 | ||
2262 | lockflags = XFS_ILOCK_EXCL; | |
2263 | xfs_ilock(ip, lockflags); | |
2264 | ||
bd186aa9 | 2265 | if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) |
1da177e4 LT |
2266 | gid = ip->i_d.di_gid; |
2267 | ||
2268 | /* | |
2269 | * Attach the dquot(s) to this inode, doing a dquot allocation | |
2270 | * if necessary. The dquot(s) will not be locked. | |
2271 | */ | |
2272 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
7d095257 CH |
2273 | error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); |
2274 | if (error) { | |
1da177e4 | 2275 | xfs_iunlock(ip, lockflags); |
014c2544 | 2276 | return error; |
1da177e4 LT |
2277 | } |
2278 | } | |
2279 | ||
2280 | uq = gq = NULL; | |
c8ad20ff | 2281 | if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { |
1da177e4 LT |
2282 | if (ip->i_d.di_uid != uid) { |
2283 | /* | |
2284 | * What we need is the dquot that has this uid, and | |
2285 | * if we send the inode to dqget, the uid of the inode | |
2286 | * takes priority over what's sent in the uid argument. | |
2287 | * We must unlock inode here before calling dqget if | |
2288 | * we're not sending the inode, because otherwise | |
2289 | * we'll deadlock by doing trans_reserve while | |
2290 | * holding ilock. | |
2291 | */ | |
2292 | xfs_iunlock(ip, lockflags); | |
2293 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t) uid, | |
2294 | XFS_DQ_USER, | |
2295 | XFS_QMOPT_DQALLOC | | |
2296 | XFS_QMOPT_DOWARN, | |
2297 | &uq))) { | |
2298 | ASSERT(error != ENOENT); | |
014c2544 | 2299 | return error; |
1da177e4 LT |
2300 | } |
2301 | /* | |
2302 | * Get the ilock in the right order. | |
2303 | */ | |
2304 | xfs_dqunlock(uq); | |
2305 | lockflags = XFS_ILOCK_SHARED; | |
2306 | xfs_ilock(ip, lockflags); | |
2307 | } else { | |
2308 | /* | |
2309 | * Take an extra reference, because we'll return | |
2310 | * this to caller | |
2311 | */ | |
2312 | ASSERT(ip->i_udquot); | |
2313 | uq = ip->i_udquot; | |
2314 | xfs_dqlock(uq); | |
2315 | XFS_DQHOLD(uq); | |
2316 | xfs_dqunlock(uq); | |
2317 | } | |
2318 | } | |
c8ad20ff | 2319 | if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { |
1da177e4 LT |
2320 | if (ip->i_d.di_gid != gid) { |
2321 | xfs_iunlock(ip, lockflags); | |
2322 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)gid, | |
2323 | XFS_DQ_GROUP, | |
2324 | XFS_QMOPT_DQALLOC | | |
2325 | XFS_QMOPT_DOWARN, | |
2326 | &gq))) { | |
2327 | if (uq) | |
2328 | xfs_qm_dqrele(uq); | |
2329 | ASSERT(error != ENOENT); | |
014c2544 | 2330 | return error; |
1da177e4 LT |
2331 | } |
2332 | xfs_dqunlock(gq); | |
2333 | lockflags = XFS_ILOCK_SHARED; | |
2334 | xfs_ilock(ip, lockflags); | |
2335 | } else { | |
2336 | ASSERT(ip->i_gdquot); | |
2337 | gq = ip->i_gdquot; | |
2338 | xfs_dqlock(gq); | |
2339 | XFS_DQHOLD(gq); | |
2340 | xfs_dqunlock(gq); | |
2341 | } | |
c8ad20ff NS |
2342 | } else if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { |
2343 | if (ip->i_d.di_projid != prid) { | |
2344 | xfs_iunlock(ip, lockflags); | |
2345 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, | |
2346 | XFS_DQ_PROJ, | |
2347 | XFS_QMOPT_DQALLOC | | |
2348 | XFS_QMOPT_DOWARN, | |
2349 | &gq))) { | |
2350 | if (uq) | |
2351 | xfs_qm_dqrele(uq); | |
2352 | ASSERT(error != ENOENT); | |
2353 | return (error); | |
2354 | } | |
2355 | xfs_dqunlock(gq); | |
2356 | lockflags = XFS_ILOCK_SHARED; | |
2357 | xfs_ilock(ip, lockflags); | |
2358 | } else { | |
2359 | ASSERT(ip->i_gdquot); | |
2360 | gq = ip->i_gdquot; | |
2361 | xfs_dqlock(gq); | |
2362 | XFS_DQHOLD(gq); | |
2363 | xfs_dqunlock(gq); | |
2364 | } | |
1da177e4 LT |
2365 | } |
2366 | if (uq) | |
0b1b213f | 2367 | trace_xfs_dquot_dqalloc(ip); |
1da177e4 LT |
2368 | |
2369 | xfs_iunlock(ip, lockflags); | |
2370 | if (O_udqpp) | |
2371 | *O_udqpp = uq; | |
2372 | else if (uq) | |
2373 | xfs_qm_dqrele(uq); | |
2374 | if (O_gdqpp) | |
2375 | *O_gdqpp = gq; | |
2376 | else if (gq) | |
2377 | xfs_qm_dqrele(gq); | |
014c2544 | 2378 | return 0; |
1da177e4 LT |
2379 | } |
2380 | ||
2381 | /* | |
2382 | * Actually transfer ownership, and do dquot modifications. | |
2383 | * These were already reserved. | |
2384 | */ | |
2385 | xfs_dquot_t * | |
2386 | xfs_qm_vop_chown( | |
2387 | xfs_trans_t *tp, | |
2388 | xfs_inode_t *ip, | |
2389 | xfs_dquot_t **IO_olddq, | |
2390 | xfs_dquot_t *newdq) | |
2391 | { | |
2392 | xfs_dquot_t *prevdq; | |
06d10dd9 NS |
2393 | uint bfield = XFS_IS_REALTIME_INODE(ip) ? |
2394 | XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; | |
2395 | ||
7d095257 | 2396 | |
579aa9ca | 2397 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
2398 | ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); |
2399 | ||
2400 | /* old dquot */ | |
2401 | prevdq = *IO_olddq; | |
2402 | ASSERT(prevdq); | |
2403 | ASSERT(prevdq != newdq); | |
2404 | ||
06d10dd9 NS |
2405 | xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); |
2406 | xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); | |
1da177e4 LT |
2407 | |
2408 | /* the sparkling new dquot */ | |
06d10dd9 NS |
2409 | xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); |
2410 | xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); | |
1da177e4 LT |
2411 | |
2412 | /* | |
2413 | * Take an extra reference, because the inode | |
2414 | * is going to keep this dquot pointer even | |
2415 | * after the trans_commit. | |
2416 | */ | |
2417 | xfs_dqlock(newdq); | |
2418 | XFS_DQHOLD(newdq); | |
2419 | xfs_dqunlock(newdq); | |
2420 | *IO_olddq = newdq; | |
2421 | ||
014c2544 | 2422 | return prevdq; |
1da177e4 LT |
2423 | } |
2424 | ||
2425 | /* | |
c8ad20ff | 2426 | * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). |
1da177e4 LT |
2427 | */ |
2428 | int | |
2429 | xfs_qm_vop_chown_reserve( | |
2430 | xfs_trans_t *tp, | |
2431 | xfs_inode_t *ip, | |
2432 | xfs_dquot_t *udqp, | |
2433 | xfs_dquot_t *gdqp, | |
2434 | uint flags) | |
2435 | { | |
7d095257 | 2436 | xfs_mount_t *mp = ip->i_mount; |
9a2a7de2 | 2437 | uint delblks, blkflags, prjflags = 0; |
1da177e4 | 2438 | xfs_dquot_t *unresudq, *unresgdq, *delblksudq, *delblksgdq; |
7d095257 CH |
2439 | int error; |
2440 | ||
1da177e4 | 2441 | |
579aa9ca | 2442 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); |
1da177e4 LT |
2443 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
2444 | ||
2445 | delblks = ip->i_delayed_blks; | |
2446 | delblksudq = delblksgdq = unresudq = unresgdq = NULL; | |
06d10dd9 NS |
2447 | blkflags = XFS_IS_REALTIME_INODE(ip) ? |
2448 | XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; | |
1da177e4 LT |
2449 | |
2450 | if (XFS_IS_UQUOTA_ON(mp) && udqp && | |
1149d96a | 2451 | ip->i_d.di_uid != (uid_t)be32_to_cpu(udqp->q_core.d_id)) { |
1da177e4 LT |
2452 | delblksudq = udqp; |
2453 | /* | |
2454 | * If there are delayed allocation blocks, then we have to | |
2455 | * unreserve those from the old dquot, and add them to the | |
2456 | * new dquot. | |
2457 | */ | |
2458 | if (delblks) { | |
2459 | ASSERT(ip->i_udquot); | |
2460 | unresudq = ip->i_udquot; | |
2461 | } | |
2462 | } | |
c8ad20ff | 2463 | if (XFS_IS_OQUOTA_ON(ip->i_mount) && gdqp) { |
9a2a7de2 NS |
2464 | if (XFS_IS_PQUOTA_ON(ip->i_mount) && |
2465 | ip->i_d.di_projid != be32_to_cpu(gdqp->q_core.d_id)) | |
2466 | prjflags = XFS_QMOPT_ENOSPC; | |
2467 | ||
2468 | if (prjflags || | |
2469 | (XFS_IS_GQUOTA_ON(ip->i_mount) && | |
2470 | ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id))) { | |
c8ad20ff NS |
2471 | delblksgdq = gdqp; |
2472 | if (delblks) { | |
2473 | ASSERT(ip->i_gdquot); | |
2474 | unresgdq = ip->i_gdquot; | |
2475 | } | |
1da177e4 LT |
2476 | } |
2477 | } | |
2478 | ||
2479 | if ((error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, | |
2480 | delblksudq, delblksgdq, ip->i_d.di_nblocks, 1, | |
9a2a7de2 | 2481 | flags | blkflags | prjflags))) |
1da177e4 LT |
2482 | return (error); |
2483 | ||
2484 | /* | |
2485 | * Do the delayed blks reservations/unreservations now. Since, these | |
2486 | * are done without the help of a transaction, if a reservation fails | |
2487 | * its previous reservations won't be automatically undone by trans | |
2488 | * code. So, we have to do it manually here. | |
2489 | */ | |
2490 | if (delblks) { | |
2491 | /* | |
2492 | * Do the reservations first. Unreservation can't fail. | |
2493 | */ | |
2494 | ASSERT(delblksudq || delblksgdq); | |
2495 | ASSERT(unresudq || unresgdq); | |
2496 | if ((error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
2497 | delblksudq, delblksgdq, (xfs_qcnt_t)delblks, 0, | |
9a2a7de2 | 2498 | flags | blkflags | prjflags))) |
1da177e4 LT |
2499 | return (error); |
2500 | xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
2501 | unresudq, unresgdq, -((xfs_qcnt_t)delblks), 0, | |
06d10dd9 | 2502 | blkflags); |
1da177e4 LT |
2503 | } |
2504 | ||
2505 | return (0); | |
2506 | } | |
2507 | ||
2508 | int | |
2509 | xfs_qm_vop_rename_dqattach( | |
7d095257 | 2510 | struct xfs_inode **i_tab) |
1da177e4 | 2511 | { |
7d095257 CH |
2512 | struct xfs_mount *mp = i_tab[0]->i_mount; |
2513 | int i; | |
1da177e4 | 2514 | |
7d095257 | 2515 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
014c2544 | 2516 | return 0; |
1da177e4 | 2517 | |
7d095257 CH |
2518 | for (i = 0; (i < 4 && i_tab[i]); i++) { |
2519 | struct xfs_inode *ip = i_tab[i]; | |
2520 | int error; | |
2521 | ||
1da177e4 LT |
2522 | /* |
2523 | * Watch out for duplicate entries in the table. | |
2524 | */ | |
7d095257 CH |
2525 | if (i == 0 || ip != i_tab[i-1]) { |
2526 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
1da177e4 LT |
2527 | error = xfs_qm_dqattach(ip, 0); |
2528 | if (error) | |
014c2544 | 2529 | return error; |
1da177e4 LT |
2530 | } |
2531 | } | |
2532 | } | |
014c2544 | 2533 | return 0; |
1da177e4 LT |
2534 | } |
2535 | ||
2536 | void | |
7d095257 CH |
2537 | xfs_qm_vop_create_dqattach( |
2538 | struct xfs_trans *tp, | |
2539 | struct xfs_inode *ip, | |
2540 | struct xfs_dquot *udqp, | |
2541 | struct xfs_dquot *gdqp) | |
1da177e4 | 2542 | { |
7d095257 CH |
2543 | struct xfs_mount *mp = tp->t_mountp; |
2544 | ||
2545 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) | |
1da177e4 LT |
2546 | return; |
2547 | ||
579aa9ca | 2548 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
7d095257 | 2549 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1da177e4 LT |
2550 | |
2551 | if (udqp) { | |
2552 | xfs_dqlock(udqp); | |
2553 | XFS_DQHOLD(udqp); | |
2554 | xfs_dqunlock(udqp); | |
2555 | ASSERT(ip->i_udquot == NULL); | |
2556 | ip->i_udquot = udqp; | |
7d095257 | 2557 | ASSERT(XFS_IS_UQUOTA_ON(mp)); |
1149d96a | 2558 | ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); |
1da177e4 LT |
2559 | xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); |
2560 | } | |
2561 | if (gdqp) { | |
2562 | xfs_dqlock(gdqp); | |
2563 | XFS_DQHOLD(gdqp); | |
2564 | xfs_dqunlock(gdqp); | |
2565 | ASSERT(ip->i_gdquot == NULL); | |
2566 | ip->i_gdquot = gdqp; | |
7d095257 CH |
2567 | ASSERT(XFS_IS_OQUOTA_ON(mp)); |
2568 | ASSERT((XFS_IS_GQUOTA_ON(mp) ? | |
ee2a4f7c NS |
2569 | ip->i_d.di_gid : ip->i_d.di_projid) == |
2570 | be32_to_cpu(gdqp->q_core.d_id)); | |
1da177e4 LT |
2571 | xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); |
2572 | } | |
2573 | } | |
2574 |