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Commit | Line | Data |
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1da177e4 | 1 | /* |
4ce3121f NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
4ce3121f NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
4ce3121f NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
4ce3121f NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 LT |
18 | #include "xfs.h" |
19 | #include "xfs_fs.h" | |
a844f451 | 20 | #include "xfs_bit.h" |
1da177e4 | 21 | #include "xfs_log.h" |
a844f451 | 22 | #include "xfs_inum.h" |
1da177e4 LT |
23 | #include "xfs_trans.h" |
24 | #include "xfs_sb.h" | |
25 | #include "xfs_ag.h" | |
1da177e4 | 26 | #include "xfs_alloc.h" |
1da177e4 LT |
27 | #include "xfs_quota.h" |
28 | #include "xfs_mount.h" | |
1da177e4 LT |
29 | #include "xfs_bmap_btree.h" |
30 | #include "xfs_ialloc_btree.h" | |
1da177e4 LT |
31 | #include "xfs_dinode.h" |
32 | #include "xfs_inode.h" | |
a844f451 NS |
33 | #include "xfs_ialloc.h" |
34 | #include "xfs_itable.h" | |
1da177e4 LT |
35 | #include "xfs_rtalloc.h" |
36 | #include "xfs_error.h" | |
a844f451 | 37 | #include "xfs_bmap.h" |
1da177e4 LT |
38 | #include "xfs_attr.h" |
39 | #include "xfs_buf_item.h" | |
40 | #include "xfs_trans_space.h" | |
41 | #include "xfs_utils.h" | |
1da177e4 | 42 | #include "xfs_qm.h" |
0b1b213f | 43 | #include "xfs_trace.h" |
1da177e4 LT |
44 | |
45 | /* | |
46 | * The global quota manager. There is only one of these for the entire | |
47 | * system, _not_ one per file system. XQM keeps track of the overall | |
48 | * quota functionality, including maintaining the freelist and hash | |
49 | * tables of dquots. | |
50 | */ | |
a0b0b8a5 | 51 | struct mutex xfs_Gqm_lock; |
1da177e4 LT |
52 | struct xfs_qm *xfs_Gqm; |
53 | ||
54 | kmem_zone_t *qm_dqzone; | |
55 | kmem_zone_t *qm_dqtrxzone; | |
1da177e4 | 56 | |
1da177e4 | 57 | STATIC int xfs_qm_init_quotainos(xfs_mount_t *); |
ba0f32d4 | 58 | STATIC int xfs_qm_init_quotainfo(xfs_mount_t *); |
1495f230 | 59 | STATIC int xfs_qm_shake(struct shrinker *, struct shrink_control *); |
1da177e4 | 60 | |
1da177e4 LT |
61 | /* |
62 | * Initialize the XQM structure. | |
63 | * Note that there is not one quota manager per file system. | |
64 | */ | |
65 | STATIC struct xfs_qm * | |
66 | xfs_Gqm_init(void) | |
67 | { | |
6b3f6b5b | 68 | xfs_qm_t *xqm; |
1da177e4 | 69 | |
6b3f6b5b | 70 | xqm = kmem_zalloc(sizeof(xfs_qm_t), KM_SLEEP); |
1da177e4 | 71 | |
1da177e4 LT |
72 | /* |
73 | * dquot zone. we register our own low-memory callback. | |
74 | */ | |
75 | if (!qm_dqzone) { | |
76 | xqm->qm_dqzone = kmem_zone_init(sizeof(xfs_dquot_t), | |
77 | "xfs_dquots"); | |
78 | qm_dqzone = xqm->qm_dqzone; | |
79 | } else | |
80 | xqm->qm_dqzone = qm_dqzone; | |
81 | ||
1da177e4 LT |
82 | /* |
83 | * The t_dqinfo portion of transactions. | |
84 | */ | |
85 | if (!qm_dqtrxzone) { | |
86 | xqm->qm_dqtrxzone = kmem_zone_init(sizeof(xfs_dquot_acct_t), | |
87 | "xfs_dqtrx"); | |
88 | qm_dqtrxzone = xqm->qm_dqtrxzone; | |
89 | } else | |
90 | xqm->qm_dqtrxzone = qm_dqtrxzone; | |
91 | ||
1da177e4 | 92 | xqm->qm_nrefs = 0; |
1da177e4 LT |
93 | return xqm; |
94 | } | |
95 | ||
96 | /* | |
97 | * Destroy the global quota manager when its reference count goes to zero. | |
98 | */ | |
ba0f32d4 | 99 | STATIC void |
1da177e4 LT |
100 | xfs_qm_destroy( |
101 | struct xfs_qm *xqm) | |
102 | { | |
1da177e4 LT |
103 | ASSERT(xqm != NULL); |
104 | ASSERT(xqm->qm_nrefs == 0); | |
80a376bf | 105 | |
f0e2d93c | 106 | kmem_free(xqm); |
1da177e4 LT |
107 | } |
108 | ||
109 | /* | |
110 | * Called at mount time to let XQM know that another file system is | |
111 | * starting quotas. This isn't crucial information as the individual mount | |
112 | * structures are pretty independent, but it helps the XQM keep a | |
113 | * global view of what's going on. | |
114 | */ | |
115 | /* ARGSUSED */ | |
116 | STATIC int | |
117 | xfs_qm_hold_quotafs_ref( | |
118 | struct xfs_mount *mp) | |
119 | { | |
120 | /* | |
121 | * Need to lock the xfs_Gqm structure for things like this. For example, | |
122 | * the structure could disappear between the entry to this routine and | |
123 | * a HOLD operation if not locked. | |
124 | */ | |
e2494582 | 125 | mutex_lock(&xfs_Gqm_lock); |
1da177e4 | 126 | |
bdfb0430 | 127 | if (!xfs_Gqm) { |
1da177e4 | 128 | xfs_Gqm = xfs_Gqm_init(); |
38e712ab JL |
129 | if (!xfs_Gqm) { |
130 | mutex_unlock(&xfs_Gqm_lock); | |
bdfb0430 | 131 | return ENOMEM; |
38e712ab | 132 | } |
bdfb0430 CH |
133 | } |
134 | ||
1da177e4 LT |
135 | /* |
136 | * We can keep a list of all filesystems with quotas mounted for | |
137 | * debugging and statistical purposes, but ... | |
138 | * Just take a reference and get out. | |
139 | */ | |
e2494582 CH |
140 | xfs_Gqm->qm_nrefs++; |
141 | mutex_unlock(&xfs_Gqm_lock); | |
1da177e4 LT |
142 | |
143 | return 0; | |
144 | } | |
145 | ||
146 | ||
147 | /* | |
148 | * Release the reference that a filesystem took at mount time, | |
149 | * so that we know when we need to destroy the entire quota manager. | |
150 | */ | |
151 | /* ARGSUSED */ | |
152 | STATIC void | |
153 | xfs_qm_rele_quotafs_ref( | |
154 | struct xfs_mount *mp) | |
155 | { | |
1da177e4 LT |
156 | ASSERT(xfs_Gqm); |
157 | ASSERT(xfs_Gqm->qm_nrefs > 0); | |
158 | ||
1da177e4 LT |
159 | /* |
160 | * Destroy the entire XQM. If somebody mounts with quotaon, this'll | |
161 | * be restarted. | |
162 | */ | |
e2494582 CH |
163 | mutex_lock(&xfs_Gqm_lock); |
164 | if (--xfs_Gqm->qm_nrefs == 0) { | |
1da177e4 LT |
165 | xfs_qm_destroy(xfs_Gqm); |
166 | xfs_Gqm = NULL; | |
167 | } | |
e2494582 | 168 | mutex_unlock(&xfs_Gqm_lock); |
1da177e4 LT |
169 | } |
170 | ||
1da177e4 LT |
171 | /* |
172 | * Just destroy the quotainfo structure. | |
173 | */ | |
174 | void | |
7d095257 CH |
175 | xfs_qm_unmount( |
176 | struct xfs_mount *mp) | |
1da177e4 | 177 | { |
7d095257 | 178 | if (mp->m_quotainfo) { |
8112e9dc | 179 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 | 180 | xfs_qm_destroy_quotainfo(mp); |
7d095257 | 181 | } |
1da177e4 LT |
182 | } |
183 | ||
184 | ||
185 | /* | |
186 | * This is called from xfs_mountfs to start quotas and initialize all | |
187 | * necessary data structures like quotainfo. This is also responsible for | |
188 | * running a quotacheck as necessary. We are guaranteed that the superblock | |
189 | * is consistently read in at this point. | |
53aa7915 DC |
190 | * |
191 | * If we fail here, the mount will continue with quota turned off. We don't | |
192 | * need to inidicate success or failure at all. | |
1da177e4 | 193 | */ |
53aa7915 | 194 | void |
1da177e4 | 195 | xfs_qm_mount_quotas( |
4249023a | 196 | xfs_mount_t *mp) |
1da177e4 | 197 | { |
1da177e4 LT |
198 | int error = 0; |
199 | uint sbf; | |
200 | ||
1da177e4 LT |
201 | /* |
202 | * If quotas on realtime volumes is not supported, we disable | |
203 | * quotas immediately. | |
204 | */ | |
205 | if (mp->m_sb.sb_rextents) { | |
0b932ccc | 206 | xfs_notice(mp, "Cannot turn on quotas for realtime filesystem"); |
1da177e4 LT |
207 | mp->m_qflags = 0; |
208 | goto write_changes; | |
209 | } | |
210 | ||
1da177e4 | 211 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
155ffd07 | 212 | |
1da177e4 LT |
213 | /* |
214 | * Allocate the quotainfo structure inside the mount struct, and | |
215 | * create quotainode(s), and change/rev superblock if necessary. | |
216 | */ | |
53aa7915 DC |
217 | error = xfs_qm_init_quotainfo(mp); |
218 | if (error) { | |
1da177e4 LT |
219 | /* |
220 | * We must turn off quotas. | |
221 | */ | |
222 | ASSERT(mp->m_quotainfo == NULL); | |
223 | mp->m_qflags = 0; | |
224 | goto write_changes; | |
225 | } | |
226 | /* | |
227 | * If any of the quotas are not consistent, do a quotacheck. | |
228 | */ | |
4249023a | 229 | if (XFS_QM_NEED_QUOTACHECK(mp)) { |
53aa7915 DC |
230 | error = xfs_qm_quotacheck(mp); |
231 | if (error) { | |
232 | /* Quotacheck failed and disabled quotas. */ | |
233 | return; | |
1da177e4 | 234 | } |
1da177e4 | 235 | } |
646d5bda DD |
236 | /* |
237 | * If one type of quotas is off, then it will lose its | |
238 | * quotachecked status, since we won't be doing accounting for | |
239 | * that type anymore. | |
240 | */ | |
53aa7915 | 241 | if (!XFS_IS_UQUOTA_ON(mp)) |
646d5bda | 242 | mp->m_qflags &= ~XFS_UQUOTA_CHKD; |
53aa7915 | 243 | if (!(XFS_IS_GQUOTA_ON(mp) || XFS_IS_PQUOTA_ON(mp))) |
646d5bda | 244 | mp->m_qflags &= ~XFS_OQUOTA_CHKD; |
155ffd07 | 245 | |
1da177e4 LT |
246 | write_changes: |
247 | /* | |
3685c2a1 | 248 | * We actually don't have to acquire the m_sb_lock at all. |
1da177e4 LT |
249 | * This can only be called from mount, and that's single threaded. XXX |
250 | */ | |
3685c2a1 | 251 | spin_lock(&mp->m_sb_lock); |
1da177e4 LT |
252 | sbf = mp->m_sb.sb_qflags; |
253 | mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL; | |
3685c2a1 | 254 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
255 | |
256 | if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { | |
257 | if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) { | |
258 | /* | |
259 | * We could only have been turning quotas off. | |
260 | * We aren't in very good shape actually because | |
261 | * the incore structures are convinced that quotas are | |
262 | * off, but the on disk superblock doesn't know that ! | |
263 | */ | |
264 | ASSERT(!(XFS_IS_QUOTA_RUNNING(mp))); | |
53487786 DC |
265 | xfs_alert(mp, "%s: Superblock update failed!", |
266 | __func__); | |
1da177e4 LT |
267 | } |
268 | } | |
269 | ||
270 | if (error) { | |
53487786 | 271 | xfs_warn(mp, "Failed to initialize disk quotas."); |
7d095257 | 272 | return; |
1da177e4 | 273 | } |
1da177e4 LT |
274 | } |
275 | ||
276 | /* | |
277 | * Called from the vfsops layer. | |
278 | */ | |
e57481dc | 279 | void |
1da177e4 LT |
280 | xfs_qm_unmount_quotas( |
281 | xfs_mount_t *mp) | |
282 | { | |
1da177e4 LT |
283 | /* |
284 | * Release the dquots that root inode, et al might be holding, | |
285 | * before we flush quotas and blow away the quotainfo structure. | |
286 | */ | |
287 | ASSERT(mp->m_rootip); | |
288 | xfs_qm_dqdetach(mp->m_rootip); | |
289 | if (mp->m_rbmip) | |
290 | xfs_qm_dqdetach(mp->m_rbmip); | |
291 | if (mp->m_rsumip) | |
292 | xfs_qm_dqdetach(mp->m_rsumip); | |
293 | ||
294 | /* | |
e57481dc | 295 | * Release the quota inodes. |
1da177e4 | 296 | */ |
1da177e4 | 297 | if (mp->m_quotainfo) { |
e57481dc CH |
298 | if (mp->m_quotainfo->qi_uquotaip) { |
299 | IRELE(mp->m_quotainfo->qi_uquotaip); | |
300 | mp->m_quotainfo->qi_uquotaip = NULL; | |
1da177e4 | 301 | } |
e57481dc CH |
302 | if (mp->m_quotainfo->qi_gquotaip) { |
303 | IRELE(mp->m_quotainfo->qi_gquotaip); | |
304 | mp->m_quotainfo->qi_gquotaip = NULL; | |
1da177e4 LT |
305 | } |
306 | } | |
1da177e4 LT |
307 | } |
308 | ||
309 | /* | |
310 | * Flush all dquots of the given file system to disk. The dquots are | |
311 | * _not_ purged from memory here, just their data written to disk. | |
312 | */ | |
ba0f32d4 | 313 | STATIC int |
1da177e4 | 314 | xfs_qm_dqflush_all( |
a7ef9bd7 | 315 | struct xfs_mount *mp) |
1da177e4 | 316 | { |
8a7b8a89 CH |
317 | struct xfs_quotainfo *q = mp->m_quotainfo; |
318 | int recl; | |
319 | struct xfs_dquot *dqp; | |
8a7b8a89 | 320 | int error; |
1da177e4 | 321 | |
8a7b8a89 | 322 | if (!q) |
014c2544 | 323 | return 0; |
1da177e4 | 324 | again: |
8a7b8a89 CH |
325 | mutex_lock(&q->qi_dqlist_lock); |
326 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 | 327 | xfs_dqlock(dqp); |
92678554 CH |
328 | if ((dqp->dq_flags & XFS_DQ_FREEING) || |
329 | !XFS_DQ_IS_DIRTY(dqp)) { | |
1da177e4 LT |
330 | xfs_dqunlock(dqp); |
331 | continue; | |
332 | } | |
0b1b213f | 333 | |
1da177e4 | 334 | /* XXX a sentinel would be better */ |
8a7b8a89 | 335 | recl = q->qi_dqreclaims; |
e1f49cf2 | 336 | if (!xfs_dqflock_nowait(dqp)) { |
1da177e4 LT |
337 | /* |
338 | * If we can't grab the flush lock then check | |
339 | * to see if the dquot has been flushed delayed | |
340 | * write. If so, grab its buffer and send it | |
341 | * out immediately. We'll be able to acquire | |
342 | * the flush lock when the I/O completes. | |
343 | */ | |
800b484e | 344 | xfs_dqflock_pushbuf_wait(dqp); |
1da177e4 LT |
345 | } |
346 | /* | |
347 | * Let go of the mplist lock. We don't want to hold it | |
348 | * across a disk write. | |
349 | */ | |
8a7b8a89 | 350 | mutex_unlock(&q->qi_dqlist_lock); |
a7ef9bd7 | 351 | error = xfs_qm_dqflush(dqp, 0); |
1da177e4 LT |
352 | xfs_dqunlock(dqp); |
353 | if (error) | |
014c2544 | 354 | return error; |
1da177e4 | 355 | |
8a7b8a89 CH |
356 | mutex_lock(&q->qi_dqlist_lock); |
357 | if (recl != q->qi_dqreclaims) { | |
358 | mutex_unlock(&q->qi_dqlist_lock); | |
1da177e4 LT |
359 | /* XXX restart limit */ |
360 | goto again; | |
361 | } | |
362 | } | |
363 | ||
8a7b8a89 | 364 | mutex_unlock(&q->qi_dqlist_lock); |
1da177e4 | 365 | /* return ! busy */ |
014c2544 | 366 | return 0; |
1da177e4 | 367 | } |
92678554 | 368 | |
1da177e4 LT |
369 | /* |
370 | * Release the group dquot pointers the user dquots may be | |
371 | * carrying around as a hint. mplist is locked on entry and exit. | |
372 | */ | |
373 | STATIC void | |
374 | xfs_qm_detach_gdquots( | |
8a7b8a89 | 375 | struct xfs_mount *mp) |
1da177e4 | 376 | { |
8a7b8a89 CH |
377 | struct xfs_quotainfo *q = mp->m_quotainfo; |
378 | struct xfs_dquot *dqp, *gdqp; | |
1da177e4 LT |
379 | |
380 | again: | |
8a7b8a89 CH |
381 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
382 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { | |
1da177e4 | 383 | xfs_dqlock(dqp); |
92678554 CH |
384 | if (dqp->dq_flags & XFS_DQ_FREEING) { |
385 | xfs_dqunlock(dqp); | |
386 | mutex_unlock(&q->qi_dqlist_lock); | |
387 | delay(1); | |
388 | mutex_lock(&q->qi_dqlist_lock); | |
389 | goto again; | |
390 | } | |
28fb588c CH |
391 | |
392 | gdqp = dqp->q_gdquot; | |
393 | if (gdqp) | |
1da177e4 | 394 | dqp->q_gdquot = NULL; |
1da177e4 LT |
395 | xfs_dqunlock(dqp); |
396 | ||
28fb588c CH |
397 | if (gdqp) |
398 | xfs_qm_dqrele(gdqp); | |
1da177e4 LT |
399 | } |
400 | } | |
401 | ||
402 | /* | |
403 | * Go through all the incore dquots of this file system and take them | |
404 | * off the mplist and hashlist, if the dquot type matches the dqtype | |
405 | * parameter. This is used when turning off quota accounting for | |
406 | * users and/or groups, as well as when the filesystem is unmounting. | |
407 | */ | |
408 | STATIC int | |
409 | xfs_qm_dqpurge_int( | |
8a7b8a89 CH |
410 | struct xfs_mount *mp, |
411 | uint flags) | |
1da177e4 | 412 | { |
8a7b8a89 CH |
413 | struct xfs_quotainfo *q = mp->m_quotainfo; |
414 | struct xfs_dquot *dqp, *n; | |
415 | uint dqtype; | |
92678554 CH |
416 | int nmisses = 0; |
417 | LIST_HEAD (dispose_list); | |
1da177e4 | 418 | |
8a7b8a89 | 419 | if (!q) |
014c2544 | 420 | return 0; |
1da177e4 LT |
421 | |
422 | dqtype = (flags & XFS_QMOPT_UQUOTA) ? XFS_DQ_USER : 0; | |
c8ad20ff | 423 | dqtype |= (flags & XFS_QMOPT_PQUOTA) ? XFS_DQ_PROJ : 0; |
1da177e4 LT |
424 | dqtype |= (flags & XFS_QMOPT_GQUOTA) ? XFS_DQ_GROUP : 0; |
425 | ||
8a7b8a89 | 426 | mutex_lock(&q->qi_dqlist_lock); |
1da177e4 LT |
427 | |
428 | /* | |
429 | * In the first pass through all incore dquots of this filesystem, | |
430 | * we release the group dquot pointers the user dquots may be | |
431 | * carrying around as a hint. We need to do this irrespective of | |
432 | * what's being turned off. | |
433 | */ | |
434 | xfs_qm_detach_gdquots(mp); | |
435 | ||
1da177e4 | 436 | /* |
92678554 | 437 | * Try to get rid of all of the unwanted dquots. |
1da177e4 | 438 | */ |
8a7b8a89 | 439 | list_for_each_entry_safe(dqp, n, &q->qi_dqlist, q_mplist) { |
be7ffc38 | 440 | xfs_dqlock(dqp); |
92678554 CH |
441 | if ((dqp->dq_flags & dqtype) != 0 && |
442 | !(dqp->dq_flags & XFS_DQ_FREEING)) { | |
443 | if (dqp->q_nrefs == 0) { | |
444 | dqp->dq_flags |= XFS_DQ_FREEING; | |
445 | list_move_tail(&dqp->q_mplist, &dispose_list); | |
446 | } else | |
447 | nmisses++; | |
be7ffc38 CH |
448 | } |
449 | xfs_dqunlock(dqp); | |
1da177e4 | 450 | } |
8a7b8a89 | 451 | mutex_unlock(&q->qi_dqlist_lock); |
92678554 CH |
452 | |
453 | list_for_each_entry_safe(dqp, n, &dispose_list, q_mplist) | |
454 | xfs_qm_dqpurge(dqp); | |
455 | ||
1da177e4 LT |
456 | return nmisses; |
457 | } | |
458 | ||
459 | int | |
460 | xfs_qm_dqpurge_all( | |
461 | xfs_mount_t *mp, | |
462 | uint flags) | |
463 | { | |
464 | int ndquots; | |
465 | ||
466 | /* | |
467 | * Purge the dquot cache. | |
468 | * None of the dquots should really be busy at this point. | |
469 | */ | |
470 | if (mp->m_quotainfo) { | |
471 | while ((ndquots = xfs_qm_dqpurge_int(mp, flags))) { | |
472 | delay(ndquots * 10); | |
473 | } | |
474 | } | |
475 | return 0; | |
476 | } | |
477 | ||
478 | STATIC int | |
479 | xfs_qm_dqattach_one( | |
480 | xfs_inode_t *ip, | |
481 | xfs_dqid_t id, | |
482 | uint type, | |
483 | uint doalloc, | |
1da177e4 LT |
484 | xfs_dquot_t *udqhint, /* hint */ |
485 | xfs_dquot_t **IO_idqpp) | |
486 | { | |
487 | xfs_dquot_t *dqp; | |
488 | int error; | |
489 | ||
579aa9ca | 490 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 491 | error = 0; |
8e9b6e7f | 492 | |
1da177e4 LT |
493 | /* |
494 | * See if we already have it in the inode itself. IO_idqpp is | |
495 | * &i_udquot or &i_gdquot. This made the code look weird, but | |
496 | * made the logic a lot simpler. | |
497 | */ | |
8e9b6e7f CH |
498 | dqp = *IO_idqpp; |
499 | if (dqp) { | |
0b1b213f | 500 | trace_xfs_dqattach_found(dqp); |
8e9b6e7f | 501 | return 0; |
1da177e4 LT |
502 | } |
503 | ||
504 | /* | |
505 | * udqhint is the i_udquot field in inode, and is non-NULL only | |
c8ad20ff | 506 | * when the type arg is group/project. Its purpose is to save a |
1da177e4 LT |
507 | * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside |
508 | * the user dquot. | |
509 | */ | |
8e9b6e7f CH |
510 | if (udqhint) { |
511 | ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); | |
1da177e4 LT |
512 | xfs_dqlock(udqhint); |
513 | ||
8e9b6e7f CH |
514 | /* |
515 | * No need to take dqlock to look at the id. | |
516 | * | |
517 | * The ID can't change until it gets reclaimed, and it won't | |
518 | * be reclaimed as long as we have a ref from inode and we | |
519 | * hold the ilock. | |
520 | */ | |
521 | dqp = udqhint->q_gdquot; | |
522 | if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) { | |
8e9b6e7f | 523 | ASSERT(*IO_idqpp == NULL); |
8e9b6e7f | 524 | |
78e55892 | 525 | *IO_idqpp = xfs_qm_dqhold(dqp); |
1da177e4 | 526 | xfs_dqunlock(udqhint); |
8e9b6e7f | 527 | return 0; |
1da177e4 | 528 | } |
8e9b6e7f CH |
529 | |
530 | /* | |
531 | * We can't hold a dquot lock when we call the dqget code. | |
532 | * We'll deadlock in no time, because of (not conforming to) | |
533 | * lock ordering - the inodelock comes before any dquot lock, | |
534 | * and we may drop and reacquire the ilock in xfs_qm_dqget(). | |
535 | */ | |
1da177e4 | 536 | xfs_dqunlock(udqhint); |
8e9b6e7f CH |
537 | } |
538 | ||
1da177e4 LT |
539 | /* |
540 | * Find the dquot from somewhere. This bumps the | |
541 | * reference count of dquot and returns it locked. | |
542 | * This can return ENOENT if dquot didn't exist on | |
543 | * disk and we didn't ask it to allocate; | |
544 | * ESRCH if quotas got turned off suddenly. | |
545 | */ | |
db3e74b5 MH |
546 | error = xfs_qm_dqget(ip->i_mount, ip, id, type, |
547 | doalloc | XFS_QMOPT_DOWARN, &dqp); | |
8e9b6e7f CH |
548 | if (error) |
549 | return error; | |
1da177e4 | 550 | |
0b1b213f | 551 | trace_xfs_dqattach_get(dqp); |
8e9b6e7f | 552 | |
1da177e4 LT |
553 | /* |
554 | * dqget may have dropped and re-acquired the ilock, but it guarantees | |
555 | * that the dquot returned is the one that should go in the inode. | |
556 | */ | |
557 | *IO_idqpp = dqp; | |
8e9b6e7f CH |
558 | xfs_dqunlock(dqp); |
559 | return 0; | |
1da177e4 LT |
560 | } |
561 | ||
562 | ||
563 | /* | |
564 | * Given a udquot and gdquot, attach a ptr to the group dquot in the | |
ab680bb7 | 565 | * udquot as a hint for future lookups. |
1da177e4 LT |
566 | */ |
567 | STATIC void | |
568 | xfs_qm_dqattach_grouphint( | |
569 | xfs_dquot_t *udq, | |
8e9b6e7f | 570 | xfs_dquot_t *gdq) |
1da177e4 LT |
571 | { |
572 | xfs_dquot_t *tmp; | |
573 | ||
8e9b6e7f | 574 | xfs_dqlock(udq); |
1da177e4 | 575 | |
ab680bb7 CH |
576 | tmp = udq->q_gdquot; |
577 | if (tmp) { | |
578 | if (tmp == gdq) | |
579 | goto done; | |
1da177e4 LT |
580 | |
581 | udq->q_gdquot = NULL; | |
1da177e4 | 582 | xfs_qm_dqrele(tmp); |
1da177e4 | 583 | } |
8e9b6e7f | 584 | |
78e55892 | 585 | udq->q_gdquot = xfs_qm_dqhold(gdq); |
ab680bb7 | 586 | done: |
8e9b6e7f | 587 | xfs_dqunlock(udq); |
1da177e4 LT |
588 | } |
589 | ||
590 | ||
591 | /* | |
c8ad20ff NS |
592 | * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON |
593 | * into account. | |
1da177e4 | 594 | * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. |
1da177e4 LT |
595 | * Inode may get unlocked and relocked in here, and the caller must deal with |
596 | * the consequences. | |
597 | */ | |
598 | int | |
7d095257 | 599 | xfs_qm_dqattach_locked( |
1da177e4 LT |
600 | xfs_inode_t *ip, |
601 | uint flags) | |
602 | { | |
603 | xfs_mount_t *mp = ip->i_mount; | |
604 | uint nquotas = 0; | |
605 | int error = 0; | |
606 | ||
7d095257 CH |
607 | if (!XFS_IS_QUOTA_RUNNING(mp) || |
608 | !XFS_IS_QUOTA_ON(mp) || | |
609 | !XFS_NOT_DQATTACHED(mp, ip) || | |
610 | ip->i_ino == mp->m_sb.sb_uquotino || | |
611 | ip->i_ino == mp->m_sb.sb_gquotino) | |
014c2544 | 612 | return 0; |
1da177e4 | 613 | |
7d095257 | 614 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
615 | |
616 | if (XFS_IS_UQUOTA_ON(mp)) { | |
617 | error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, | |
618 | flags & XFS_QMOPT_DQALLOC, | |
1da177e4 LT |
619 | NULL, &ip->i_udquot); |
620 | if (error) | |
621 | goto done; | |
622 | nquotas++; | |
623 | } | |
579aa9ca CH |
624 | |
625 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); | |
c8ad20ff NS |
626 | if (XFS_IS_OQUOTA_ON(mp)) { |
627 | error = XFS_IS_GQUOTA_ON(mp) ? | |
628 | xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, | |
629 | flags & XFS_QMOPT_DQALLOC, | |
c8ad20ff | 630 | ip->i_udquot, &ip->i_gdquot) : |
6743099c | 631 | xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ, |
1da177e4 | 632 | flags & XFS_QMOPT_DQALLOC, |
1da177e4 LT |
633 | ip->i_udquot, &ip->i_gdquot); |
634 | /* | |
635 | * Don't worry about the udquot that we may have | |
636 | * attached above. It'll get detached, if not already. | |
637 | */ | |
638 | if (error) | |
639 | goto done; | |
640 | nquotas++; | |
641 | } | |
642 | ||
643 | /* | |
644 | * Attach this group quota to the user quota as a hint. | |
645 | * This WON'T, in general, result in a thrash. | |
646 | */ | |
647 | if (nquotas == 2) { | |
579aa9ca | 648 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
649 | ASSERT(ip->i_udquot); |
650 | ASSERT(ip->i_gdquot); | |
651 | ||
652 | /* | |
ab680bb7 CH |
653 | * We do not have i_udquot locked at this point, but this check |
654 | * is OK since we don't depend on the i_gdquot to be accurate | |
655 | * 100% all the time. It is just a hint, and this will | |
656 | * succeed in general. | |
1da177e4 | 657 | */ |
ab680bb7 CH |
658 | if (ip->i_udquot->q_gdquot != ip->i_gdquot) |
659 | xfs_qm_dqattach_grouphint(ip->i_udquot, ip->i_gdquot); | |
1da177e4 LT |
660 | } |
661 | ||
7d095257 | 662 | done: |
ea15ab3c CH |
663 | #ifdef DEBUG |
664 | if (!error) { | |
1da177e4 LT |
665 | if (XFS_IS_UQUOTA_ON(mp)) |
666 | ASSERT(ip->i_udquot); | |
c8ad20ff | 667 | if (XFS_IS_OQUOTA_ON(mp)) |
1da177e4 LT |
668 | ASSERT(ip->i_gdquot); |
669 | } | |
7d095257 | 670 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 671 | #endif |
7d095257 CH |
672 | return error; |
673 | } | |
1da177e4 | 674 | |
7d095257 CH |
675 | int |
676 | xfs_qm_dqattach( | |
677 | struct xfs_inode *ip, | |
678 | uint flags) | |
679 | { | |
680 | int error; | |
681 | ||
682 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
683 | error = xfs_qm_dqattach_locked(ip, flags); | |
684 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1da177e4 | 685 | |
014c2544 | 686 | return error; |
1da177e4 LT |
687 | } |
688 | ||
689 | /* | |
690 | * Release dquots (and their references) if any. | |
691 | * The inode should be locked EXCL except when this's called by | |
692 | * xfs_ireclaim. | |
693 | */ | |
694 | void | |
695 | xfs_qm_dqdetach( | |
696 | xfs_inode_t *ip) | |
697 | { | |
698 | if (!(ip->i_udquot || ip->i_gdquot)) | |
699 | return; | |
700 | ||
0b1b213f CH |
701 | trace_xfs_dquot_dqdetach(ip); |
702 | ||
1da177e4 LT |
703 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_uquotino); |
704 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_gquotino); | |
1da177e4 LT |
705 | if (ip->i_udquot) { |
706 | xfs_qm_dqrele(ip->i_udquot); | |
707 | ip->i_udquot = NULL; | |
708 | } | |
709 | if (ip->i_gdquot) { | |
710 | xfs_qm_dqrele(ip->i_gdquot); | |
711 | ip->i_gdquot = NULL; | |
712 | } | |
713 | } | |
714 | ||
1da177e4 LT |
715 | /* |
716 | * This initializes all the quota information that's kept in the | |
717 | * mount structure | |
718 | */ | |
ba0f32d4 | 719 | STATIC int |
1da177e4 LT |
720 | xfs_qm_init_quotainfo( |
721 | xfs_mount_t *mp) | |
722 | { | |
723 | xfs_quotainfo_t *qinf; | |
724 | int error; | |
725 | xfs_dquot_t *dqp; | |
726 | ||
727 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
728 | ||
729 | /* | |
730 | * Tell XQM that we exist as soon as possible. | |
731 | */ | |
732 | if ((error = xfs_qm_hold_quotafs_ref(mp))) { | |
014c2544 | 733 | return error; |
1da177e4 LT |
734 | } |
735 | ||
736 | qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); | |
737 | ||
738 | /* | |
739 | * See if quotainodes are setup, and if not, allocate them, | |
740 | * and change the superblock accordingly. | |
741 | */ | |
742 | if ((error = xfs_qm_init_quotainos(mp))) { | |
f0e2d93c | 743 | kmem_free(qinf); |
1da177e4 | 744 | mp->m_quotainfo = NULL; |
014c2544 | 745 | return error; |
1da177e4 LT |
746 | } |
747 | ||
9f920f11 CH |
748 | INIT_RADIX_TREE(&qinf->qi_uquota_tree, GFP_NOFS); |
749 | INIT_RADIX_TREE(&qinf->qi_gquota_tree, GFP_NOFS); | |
750 | mutex_init(&qinf->qi_tree_lock); | |
751 | ||
3a25404b DC |
752 | INIT_LIST_HEAD(&qinf->qi_dqlist); |
753 | mutex_init(&qinf->qi_dqlist_lock); | |
a4edd1da | 754 | |
f8739c3c CH |
755 | INIT_LIST_HEAD(&qinf->qi_lru_list); |
756 | qinf->qi_lru_count = 0; | |
757 | mutex_init(&qinf->qi_lru_lock); | |
758 | ||
1da177e4 LT |
759 | qinf->qi_dqreclaims = 0; |
760 | ||
761 | /* mutex used to serialize quotaoffs */ | |
794ee1ba | 762 | mutex_init(&qinf->qi_quotaofflock); |
1da177e4 LT |
763 | |
764 | /* Precalc some constants */ | |
765 | qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
766 | ASSERT(qinf->qi_dqchunklen); | |
767 | qinf->qi_dqperchunk = BBTOB(qinf->qi_dqchunklen); | |
768 | do_div(qinf->qi_dqperchunk, sizeof(xfs_dqblk_t)); | |
769 | ||
770 | mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); | |
771 | ||
772 | /* | |
773 | * We try to get the limits from the superuser's limits fields. | |
774 | * This is quite hacky, but it is standard quota practice. | |
7ae44407 | 775 | * |
1da177e4 LT |
776 | * We look at the USR dquot with id == 0 first, but if user quotas |
777 | * are not enabled we goto the GRP dquot with id == 0. | |
778 | * We don't really care to keep separate default limits for user | |
779 | * and group quotas, at least not at this point. | |
7ae44407 CH |
780 | * |
781 | * Since we may not have done a quotacheck by this point, just read | |
782 | * the dquot without attaching it to any hashtables or lists. | |
1da177e4 | 783 | */ |
7ae44407 CH |
784 | error = xfs_qm_dqread(mp, 0, |
785 | XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : | |
786 | (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : | |
787 | XFS_DQ_PROJ), | |
788 | XFS_QMOPT_DOWARN, &dqp); | |
789 | if (!error) { | |
1da177e4 LT |
790 | xfs_disk_dquot_t *ddqp = &dqp->q_core; |
791 | ||
792 | /* | |
793 | * The warnings and timers set the grace period given to | |
794 | * a user or group before he or she can not perform any | |
795 | * more writing. If it is zero, a default is used. | |
796 | */ | |
1149d96a CH |
797 | qinf->qi_btimelimit = ddqp->d_btimer ? |
798 | be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; | |
799 | qinf->qi_itimelimit = ddqp->d_itimer ? | |
800 | be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; | |
801 | qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? | |
802 | be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; | |
803 | qinf->qi_bwarnlimit = ddqp->d_bwarns ? | |
804 | be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; | |
805 | qinf->qi_iwarnlimit = ddqp->d_iwarns ? | |
806 | be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; | |
807 | qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? | |
808 | be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; | |
809 | qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); | |
810 | qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); | |
811 | qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); | |
812 | qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); | |
813 | qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); | |
814 | qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); | |
1da177e4 | 815 | |
1da177e4 LT |
816 | xfs_qm_dqdestroy(dqp); |
817 | } else { | |
818 | qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; | |
819 | qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; | |
820 | qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; | |
821 | qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; | |
822 | qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; | |
06d10dd9 | 823 | qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; |
1da177e4 LT |
824 | } |
825 | ||
f8739c3c CH |
826 | qinf->qi_shrinker.shrink = xfs_qm_shake; |
827 | qinf->qi_shrinker.seeks = DEFAULT_SEEKS; | |
828 | register_shrinker(&qinf->qi_shrinker); | |
014c2544 | 829 | return 0; |
1da177e4 LT |
830 | } |
831 | ||
832 | ||
833 | /* | |
834 | * Gets called when unmounting a filesystem or when all quotas get | |
835 | * turned off. | |
836 | * This purges the quota inodes, destroys locks and frees itself. | |
837 | */ | |
838 | void | |
839 | xfs_qm_destroy_quotainfo( | |
840 | xfs_mount_t *mp) | |
841 | { | |
842 | xfs_quotainfo_t *qi; | |
843 | ||
844 | qi = mp->m_quotainfo; | |
845 | ASSERT(qi != NULL); | |
846 | ASSERT(xfs_Gqm != NULL); | |
847 | ||
f8739c3c CH |
848 | unregister_shrinker(&qi->qi_shrinker); |
849 | ||
1da177e4 LT |
850 | /* |
851 | * Release the reference that XQM kept, so that we know | |
852 | * when the XQM structure should be freed. We cannot assume | |
853 | * that xfs_Gqm is non-null after this point. | |
854 | */ | |
855 | xfs_qm_rele_quotafs_ref(mp); | |
856 | ||
3a25404b DC |
857 | ASSERT(list_empty(&qi->qi_dqlist)); |
858 | mutex_destroy(&qi->qi_dqlist_lock); | |
1da177e4 LT |
859 | |
860 | if (qi->qi_uquotaip) { | |
26cc0021 | 861 | IRELE(qi->qi_uquotaip); |
1da177e4 LT |
862 | qi->qi_uquotaip = NULL; /* paranoia */ |
863 | } | |
864 | if (qi->qi_gquotaip) { | |
26cc0021 | 865 | IRELE(qi->qi_gquotaip); |
1da177e4 LT |
866 | qi->qi_gquotaip = NULL; |
867 | } | |
868 | mutex_destroy(&qi->qi_quotaofflock); | |
f0e2d93c | 869 | kmem_free(qi); |
1da177e4 LT |
870 | mp->m_quotainfo = NULL; |
871 | } | |
872 | ||
1da177e4 LT |
873 | /* |
874 | * Create an inode and return with a reference already taken, but unlocked | |
875 | * This is how we create quota inodes | |
876 | */ | |
877 | STATIC int | |
878 | xfs_qm_qino_alloc( | |
879 | xfs_mount_t *mp, | |
880 | xfs_inode_t **ip, | |
881 | __int64_t sbfields, | |
882 | uint flags) | |
883 | { | |
884 | xfs_trans_t *tp; | |
885 | int error; | |
1da177e4 LT |
886 | int committed; |
887 | ||
061f7209 | 888 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); |
1da177e4 LT |
889 | if ((error = xfs_trans_reserve(tp, |
890 | XFS_QM_QINOCREATE_SPACE_RES(mp), | |
891 | XFS_CREATE_LOG_RES(mp), 0, | |
892 | XFS_TRANS_PERM_LOG_RES, | |
893 | XFS_CREATE_LOG_COUNT))) { | |
894 | xfs_trans_cancel(tp, 0); | |
014c2544 | 895 | return error; |
1da177e4 | 896 | } |
1da177e4 | 897 | |
6c77b0ea CH |
898 | error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip, &committed); |
899 | if (error) { | |
1da177e4 LT |
900 | xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | |
901 | XFS_TRANS_ABORT); | |
014c2544 | 902 | return error; |
1da177e4 LT |
903 | } |
904 | ||
1da177e4 LT |
905 | /* |
906 | * Make the changes in the superblock, and log those too. | |
907 | * sbfields arg may contain fields other than *QUOTINO; | |
908 | * VERSIONNUM for example. | |
909 | */ | |
3685c2a1 | 910 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 911 | if (flags & XFS_QMOPT_SBVERSION) { |
62118709 | 912 | ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); |
1da177e4 LT |
913 | ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
914 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)) == | |
915 | (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
916 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)); | |
917 | ||
62118709 | 918 | xfs_sb_version_addquota(&mp->m_sb); |
1da177e4 LT |
919 | mp->m_sb.sb_uquotino = NULLFSINO; |
920 | mp->m_sb.sb_gquotino = NULLFSINO; | |
921 | ||
922 | /* qflags will get updated _after_ quotacheck */ | |
923 | mp->m_sb.sb_qflags = 0; | |
1da177e4 LT |
924 | } |
925 | if (flags & XFS_QMOPT_UQUOTA) | |
926 | mp->m_sb.sb_uquotino = (*ip)->i_ino; | |
927 | else | |
928 | mp->m_sb.sb_gquotino = (*ip)->i_ino; | |
3685c2a1 | 929 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
930 | xfs_mod_sb(tp, sbfields); |
931 | ||
1c72bf90 | 932 | if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { |
53487786 | 933 | xfs_alert(mp, "%s failed (error %d)!", __func__, error); |
014c2544 | 934 | return error; |
1da177e4 | 935 | } |
014c2544 | 936 | return 0; |
1da177e4 LT |
937 | } |
938 | ||
939 | ||
5b139738 | 940 | STATIC void |
1da177e4 LT |
941 | xfs_qm_reset_dqcounts( |
942 | xfs_mount_t *mp, | |
943 | xfs_buf_t *bp, | |
944 | xfs_dqid_t id, | |
945 | uint type) | |
946 | { | |
947 | xfs_disk_dquot_t *ddq; | |
948 | int j; | |
949 | ||
0b1b213f CH |
950 | trace_xfs_reset_dqcounts(bp, _RET_IP_); |
951 | ||
1da177e4 LT |
952 | /* |
953 | * Reset all counters and timers. They'll be | |
954 | * started afresh by xfs_qm_quotacheck. | |
955 | */ | |
956 | #ifdef DEBUG | |
957 | j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); | |
958 | do_div(j, sizeof(xfs_dqblk_t)); | |
8a7b8a89 | 959 | ASSERT(mp->m_quotainfo->qi_dqperchunk == j); |
1da177e4 | 960 | #endif |
62926044 | 961 | ddq = bp->b_addr; |
8a7b8a89 | 962 | for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { |
1da177e4 LT |
963 | /* |
964 | * Do a sanity check, and if needed, repair the dqblk. Don't | |
965 | * output any warnings because it's perfectly possible to | |
c41564b5 | 966 | * find uninitialised dquot blks. See comment in xfs_qm_dqcheck. |
1da177e4 | 967 | */ |
a0fa2b67 | 968 | (void) xfs_qm_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR, |
1da177e4 | 969 | "xfs_quotacheck"); |
1149d96a CH |
970 | ddq->d_bcount = 0; |
971 | ddq->d_icount = 0; | |
972 | ddq->d_rtbcount = 0; | |
973 | ddq->d_btimer = 0; | |
974 | ddq->d_itimer = 0; | |
975 | ddq->d_rtbtimer = 0; | |
976 | ddq->d_bwarns = 0; | |
977 | ddq->d_iwarns = 0; | |
978 | ddq->d_rtbwarns = 0; | |
1da177e4 LT |
979 | ddq = (xfs_disk_dquot_t *) ((xfs_dqblk_t *)ddq + 1); |
980 | } | |
1da177e4 LT |
981 | } |
982 | ||
983 | STATIC int | |
984 | xfs_qm_dqiter_bufs( | |
985 | xfs_mount_t *mp, | |
986 | xfs_dqid_t firstid, | |
987 | xfs_fsblock_t bno, | |
988 | xfs_filblks_t blkcnt, | |
989 | uint flags) | |
990 | { | |
991 | xfs_buf_t *bp; | |
992 | int error; | |
c8ad20ff | 993 | int type; |
1da177e4 LT |
994 | |
995 | ASSERT(blkcnt > 0); | |
c8ad20ff NS |
996 | type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : |
997 | (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); | |
1da177e4 LT |
998 | error = 0; |
999 | ||
1000 | /* | |
1001 | * Blkcnt arg can be a very big number, and might even be | |
1002 | * larger than the log itself. So, we have to break it up into | |
1003 | * manageable-sized transactions. | |
1004 | * Note that we don't start a permanent transaction here; we might | |
1005 | * not be able to get a log reservation for the whole thing up front, | |
1006 | * and we don't really care to either, because we just discard | |
1007 | * everything if we were to crash in the middle of this loop. | |
1008 | */ | |
1009 | while (blkcnt--) { | |
1010 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1011 | XFS_FSB_TO_DADDR(mp, bno), | |
8a7b8a89 | 1012 | mp->m_quotainfo->qi_dqchunklen, 0, &bp); |
1da177e4 LT |
1013 | if (error) |
1014 | break; | |
1015 | ||
5b139738 | 1016 | xfs_qm_reset_dqcounts(mp, bp, firstid, type); |
61551f1e CH |
1017 | xfs_buf_delwri_queue(bp); |
1018 | xfs_buf_relse(bp); | |
1da177e4 LT |
1019 | /* |
1020 | * goto the next block. | |
1021 | */ | |
1022 | bno++; | |
8a7b8a89 | 1023 | firstid += mp->m_quotainfo->qi_dqperchunk; |
1da177e4 | 1024 | } |
014c2544 | 1025 | return error; |
1da177e4 LT |
1026 | } |
1027 | ||
1028 | /* | |
c8ad20ff | 1029 | * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a |
1da177e4 LT |
1030 | * caller supplied function for every chunk of dquots that we find. |
1031 | */ | |
1032 | STATIC int | |
1033 | xfs_qm_dqiterate( | |
1034 | xfs_mount_t *mp, | |
1035 | xfs_inode_t *qip, | |
1036 | uint flags) | |
1037 | { | |
1038 | xfs_bmbt_irec_t *map; | |
1039 | int i, nmaps; /* number of map entries */ | |
1040 | int error; /* return value */ | |
1041 | xfs_fileoff_t lblkno; | |
1042 | xfs_filblks_t maxlblkcnt; | |
1043 | xfs_dqid_t firstid; | |
1044 | xfs_fsblock_t rablkno; | |
1045 | xfs_filblks_t rablkcnt; | |
1046 | ||
1047 | error = 0; | |
1048 | /* | |
c41564b5 | 1049 | * This looks racy, but we can't keep an inode lock across a |
1da177e4 LT |
1050 | * trans_reserve. But, this gets called during quotacheck, and that |
1051 | * happens only at mount time which is single threaded. | |
1052 | */ | |
1053 | if (qip->i_d.di_nblocks == 0) | |
014c2544 | 1054 | return 0; |
1da177e4 LT |
1055 | |
1056 | map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); | |
1057 | ||
1058 | lblkno = 0; | |
1059 | maxlblkcnt = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp)); | |
1060 | do { | |
1061 | nmaps = XFS_DQITER_MAP_SIZE; | |
1062 | /* | |
1063 | * We aren't changing the inode itself. Just changing | |
1064 | * some of its data. No new blocks are added here, and | |
1065 | * the inode is never added to the transaction. | |
1066 | */ | |
1067 | xfs_ilock(qip, XFS_ILOCK_SHARED); | |
5c8ed202 DC |
1068 | error = xfs_bmapi_read(qip, lblkno, maxlblkcnt - lblkno, |
1069 | map, &nmaps, 0); | |
1da177e4 LT |
1070 | xfs_iunlock(qip, XFS_ILOCK_SHARED); |
1071 | if (error) | |
1072 | break; | |
1073 | ||
1074 | ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); | |
1075 | for (i = 0; i < nmaps; i++) { | |
1076 | ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); | |
1077 | ASSERT(map[i].br_blockcount); | |
1078 | ||
1079 | ||
1080 | lblkno += map[i].br_blockcount; | |
1081 | ||
1082 | if (map[i].br_startblock == HOLESTARTBLOCK) | |
1083 | continue; | |
1084 | ||
1085 | firstid = (xfs_dqid_t) map[i].br_startoff * | |
8a7b8a89 | 1086 | mp->m_quotainfo->qi_dqperchunk; |
1da177e4 LT |
1087 | /* |
1088 | * Do a read-ahead on the next extent. | |
1089 | */ | |
1090 | if ((i+1 < nmaps) && | |
1091 | (map[i+1].br_startblock != HOLESTARTBLOCK)) { | |
1092 | rablkcnt = map[i+1].br_blockcount; | |
1093 | rablkno = map[i+1].br_startblock; | |
1094 | while (rablkcnt--) { | |
1a1a3e97 | 1095 | xfs_buf_readahead(mp->m_ddev_targp, |
1da177e4 | 1096 | XFS_FSB_TO_DADDR(mp, rablkno), |
8a7b8a89 | 1097 | mp->m_quotainfo->qi_dqchunklen); |
1da177e4 LT |
1098 | rablkno++; |
1099 | } | |
1100 | } | |
1101 | /* | |
1102 | * Iterate thru all the blks in the extent and | |
1103 | * reset the counters of all the dquots inside them. | |
1104 | */ | |
1105 | if ((error = xfs_qm_dqiter_bufs(mp, | |
1106 | firstid, | |
1107 | map[i].br_startblock, | |
1108 | map[i].br_blockcount, | |
1109 | flags))) { | |
1110 | break; | |
1111 | } | |
1112 | } | |
1113 | ||
1114 | if (error) | |
1115 | break; | |
1116 | } while (nmaps > 0); | |
1117 | ||
f0e2d93c | 1118 | kmem_free(map); |
1da177e4 | 1119 | |
014c2544 | 1120 | return error; |
1da177e4 LT |
1121 | } |
1122 | ||
1123 | /* | |
1124 | * Called by dqusage_adjust in doing a quotacheck. | |
52fda114 CH |
1125 | * |
1126 | * Given the inode, and a dquot id this updates both the incore dqout as well | |
1127 | * as the buffer copy. This is so that once the quotacheck is done, we can | |
1128 | * just log all the buffers, as opposed to logging numerous updates to | |
1129 | * individual dquots. | |
1da177e4 | 1130 | */ |
52fda114 | 1131 | STATIC int |
1da177e4 | 1132 | xfs_qm_quotacheck_dqadjust( |
52fda114 CH |
1133 | struct xfs_inode *ip, |
1134 | xfs_dqid_t id, | |
1135 | uint type, | |
1da177e4 LT |
1136 | xfs_qcnt_t nblks, |
1137 | xfs_qcnt_t rtblks) | |
1138 | { | |
52fda114 CH |
1139 | struct xfs_mount *mp = ip->i_mount; |
1140 | struct xfs_dquot *dqp; | |
1141 | int error; | |
1142 | ||
1143 | error = xfs_qm_dqget(mp, ip, id, type, | |
1144 | XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp); | |
1145 | if (error) { | |
1146 | /* | |
1147 | * Shouldn't be able to turn off quotas here. | |
1148 | */ | |
1149 | ASSERT(error != ESRCH); | |
1150 | ASSERT(error != ENOENT); | |
1151 | return error; | |
1152 | } | |
0b1b213f CH |
1153 | |
1154 | trace_xfs_dqadjust(dqp); | |
1155 | ||
1da177e4 LT |
1156 | /* |
1157 | * Adjust the inode count and the block count to reflect this inode's | |
1158 | * resource usage. | |
1159 | */ | |
413d57c9 | 1160 | be64_add_cpu(&dqp->q_core.d_icount, 1); |
1da177e4 LT |
1161 | dqp->q_res_icount++; |
1162 | if (nblks) { | |
413d57c9 | 1163 | be64_add_cpu(&dqp->q_core.d_bcount, nblks); |
1da177e4 LT |
1164 | dqp->q_res_bcount += nblks; |
1165 | } | |
1166 | if (rtblks) { | |
413d57c9 | 1167 | be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); |
1da177e4 LT |
1168 | dqp->q_res_rtbcount += rtblks; |
1169 | } | |
1170 | ||
1171 | /* | |
1172 | * Set default limits, adjust timers (since we changed usages) | |
191f8488 CH |
1173 | * |
1174 | * There are no timers for the default values set in the root dquot. | |
1da177e4 | 1175 | */ |
191f8488 | 1176 | if (dqp->q_core.d_id) { |
52fda114 CH |
1177 | xfs_qm_adjust_dqlimits(mp, &dqp->q_core); |
1178 | xfs_qm_adjust_dqtimers(mp, &dqp->q_core); | |
1da177e4 LT |
1179 | } |
1180 | ||
1181 | dqp->dq_flags |= XFS_DQ_DIRTY; | |
52fda114 CH |
1182 | xfs_qm_dqput(dqp); |
1183 | return 0; | |
1da177e4 LT |
1184 | } |
1185 | ||
1186 | STATIC int | |
1187 | xfs_qm_get_rtblks( | |
1188 | xfs_inode_t *ip, | |
1189 | xfs_qcnt_t *O_rtblks) | |
1190 | { | |
1191 | xfs_filblks_t rtblks; /* total rt blks */ | |
4eea22f0 | 1192 | xfs_extnum_t idx; /* extent record index */ |
1da177e4 LT |
1193 | xfs_ifork_t *ifp; /* inode fork pointer */ |
1194 | xfs_extnum_t nextents; /* number of extent entries */ | |
1da177e4 LT |
1195 | int error; |
1196 | ||
1197 | ASSERT(XFS_IS_REALTIME_INODE(ip)); | |
1198 | ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); | |
1199 | if (!(ifp->if_flags & XFS_IFEXTENTS)) { | |
1200 | if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) | |
014c2544 | 1201 | return error; |
1da177e4 LT |
1202 | } |
1203 | rtblks = 0; | |
4eea22f0 | 1204 | nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); |
a6f64d4a CH |
1205 | for (idx = 0; idx < nextents; idx++) |
1206 | rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); | |
1da177e4 | 1207 | *O_rtblks = (xfs_qcnt_t)rtblks; |
014c2544 | 1208 | return 0; |
1da177e4 LT |
1209 | } |
1210 | ||
1211 | /* | |
1212 | * callback routine supplied to bulkstat(). Given an inumber, find its | |
1213 | * dquots and update them to account for resources taken by that inode. | |
1214 | */ | |
1215 | /* ARGSUSED */ | |
1216 | STATIC int | |
1217 | xfs_qm_dqusage_adjust( | |
1218 | xfs_mount_t *mp, /* mount point for filesystem */ | |
1219 | xfs_ino_t ino, /* inode number to get data for */ | |
1220 | void __user *buffer, /* not used */ | |
1221 | int ubsize, /* not used */ | |
1da177e4 | 1222 | int *ubused, /* not used */ |
1da177e4 LT |
1223 | int *res) /* result code value */ |
1224 | { | |
1225 | xfs_inode_t *ip; | |
52fda114 | 1226 | xfs_qcnt_t nblks, rtblks = 0; |
1da177e4 LT |
1227 | int error; |
1228 | ||
1229 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
1230 | ||
1231 | /* | |
1232 | * rootino must have its resources accounted for, not so with the quota | |
1233 | * inodes. | |
1234 | */ | |
1235 | if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) { | |
1236 | *res = BULKSTAT_RV_NOTHING; | |
1237 | return XFS_ERROR(EINVAL); | |
1238 | } | |
1239 | ||
1240 | /* | |
1241 | * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget | |
1242 | * interface expects the inode to be exclusively locked because that's | |
1243 | * the case in all other instances. It's OK that we do this because | |
1244 | * quotacheck is done only at mount time. | |
1245 | */ | |
52fda114 CH |
1246 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip); |
1247 | if (error) { | |
1da177e4 | 1248 | *res = BULKSTAT_RV_NOTHING; |
014c2544 | 1249 | return error; |
1da177e4 LT |
1250 | } |
1251 | ||
52fda114 | 1252 | ASSERT(ip->i_delayed_blks == 0); |
1da177e4 | 1253 | |
52fda114 | 1254 | if (XFS_IS_REALTIME_INODE(ip)) { |
1da177e4 LT |
1255 | /* |
1256 | * Walk thru the extent list and count the realtime blocks. | |
1257 | */ | |
52fda114 CH |
1258 | error = xfs_qm_get_rtblks(ip, &rtblks); |
1259 | if (error) | |
1260 | goto error0; | |
1da177e4 | 1261 | } |
1da177e4 | 1262 | |
52fda114 | 1263 | nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; |
1da177e4 LT |
1264 | |
1265 | /* | |
1266 | * Add the (disk blocks and inode) resources occupied by this | |
1267 | * inode to its dquots. We do this adjustment in the incore dquot, | |
1268 | * and also copy the changes to its buffer. | |
1269 | * We don't care about putting these changes in a transaction | |
1270 | * envelope because if we crash in the middle of a 'quotacheck' | |
1271 | * we have to start from the beginning anyway. | |
1272 | * Once we're done, we'll log all the dquot bufs. | |
1273 | * | |
c41564b5 | 1274 | * The *QUOTA_ON checks below may look pretty racy, but quotachecks |
1da177e4 LT |
1275 | * and quotaoffs don't race. (Quotachecks happen at mount time only). |
1276 | */ | |
1277 | if (XFS_IS_UQUOTA_ON(mp)) { | |
52fda114 CH |
1278 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid, |
1279 | XFS_DQ_USER, nblks, rtblks); | |
1280 | if (error) | |
1281 | goto error0; | |
1da177e4 | 1282 | } |
52fda114 CH |
1283 | |
1284 | if (XFS_IS_GQUOTA_ON(mp)) { | |
1285 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid, | |
1286 | XFS_DQ_GROUP, nblks, rtblks); | |
1287 | if (error) | |
1288 | goto error0; | |
1da177e4 | 1289 | } |
1da177e4 | 1290 | |
52fda114 | 1291 | if (XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 1292 | error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip), |
52fda114 CH |
1293 | XFS_DQ_PROJ, nblks, rtblks); |
1294 | if (error) | |
1295 | goto error0; | |
1296 | } | |
1297 | ||
1298 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1299 | IRELE(ip); | |
1da177e4 | 1300 | *res = BULKSTAT_RV_DIDONE; |
014c2544 | 1301 | return 0; |
52fda114 CH |
1302 | |
1303 | error0: | |
1304 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1305 | IRELE(ip); | |
1306 | *res = BULKSTAT_RV_GIVEUP; | |
1307 | return error; | |
1da177e4 LT |
1308 | } |
1309 | ||
1310 | /* | |
1311 | * Walk thru all the filesystem inodes and construct a consistent view | |
1312 | * of the disk quota world. If the quotacheck fails, disable quotas. | |
1313 | */ | |
1314 | int | |
1315 | xfs_qm_quotacheck( | |
1316 | xfs_mount_t *mp) | |
1317 | { | |
1318 | int done, count, error; | |
1319 | xfs_ino_t lastino; | |
1320 | size_t structsz; | |
1321 | xfs_inode_t *uip, *gip; | |
1322 | uint flags; | |
1323 | ||
1324 | count = INT_MAX; | |
1325 | structsz = 1; | |
1326 | lastino = 0; | |
1327 | flags = 0; | |
1328 | ||
8a7b8a89 | 1329 | ASSERT(mp->m_quotainfo->qi_uquotaip || mp->m_quotainfo->qi_gquotaip); |
1da177e4 LT |
1330 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1331 | ||
1332 | /* | |
1333 | * There should be no cached dquots. The (simplistic) quotacheck | |
1334 | * algorithm doesn't like that. | |
1335 | */ | |
3a25404b | 1336 | ASSERT(list_empty(&mp->m_quotainfo->qi_dqlist)); |
1da177e4 | 1337 | |
0b932ccc | 1338 | xfs_notice(mp, "Quotacheck needed: Please wait."); |
1da177e4 LT |
1339 | |
1340 | /* | |
c8ad20ff | 1341 | * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset |
1da177e4 LT |
1342 | * their counters to zero. We need a clean slate. |
1343 | * We don't log our changes till later. | |
1344 | */ | |
8a7b8a89 CH |
1345 | uip = mp->m_quotainfo->qi_uquotaip; |
1346 | if (uip) { | |
1347 | error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA); | |
1348 | if (error) | |
1da177e4 LT |
1349 | goto error_return; |
1350 | flags |= XFS_UQUOTA_CHKD; | |
1351 | } | |
1352 | ||
8a7b8a89 CH |
1353 | gip = mp->m_quotainfo->qi_gquotaip; |
1354 | if (gip) { | |
1355 | error = xfs_qm_dqiterate(mp, gip, XFS_IS_GQUOTA_ON(mp) ? | |
1356 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1357 | if (error) | |
1da177e4 | 1358 | goto error_return; |
c8ad20ff | 1359 | flags |= XFS_OQUOTA_CHKD; |
1da177e4 LT |
1360 | } |
1361 | ||
1362 | do { | |
1363 | /* | |
1364 | * Iterate thru all the inodes in the file system, | |
1365 | * adjusting the corresponding dquot counters in core. | |
1366 | */ | |
7dce11db CH |
1367 | error = xfs_bulkstat(mp, &lastino, &count, |
1368 | xfs_qm_dqusage_adjust, | |
1369 | structsz, NULL, &done); | |
1370 | if (error) | |
1da177e4 LT |
1371 | break; |
1372 | ||
7dce11db | 1373 | } while (!done); |
1da177e4 | 1374 | |
4b8879df DC |
1375 | /* |
1376 | * We've made all the changes that we need to make incore. | |
1377 | * Flush them down to disk buffers if everything was updated | |
1378 | * successfully. | |
1379 | */ | |
1380 | if (!error) | |
a7ef9bd7 | 1381 | error = xfs_qm_dqflush_all(mp); |
4b8879df | 1382 | |
1da177e4 LT |
1383 | /* |
1384 | * We can get this error if we couldn't do a dquot allocation inside | |
1385 | * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the | |
1386 | * dirty dquots that might be cached, we just want to get rid of them | |
1387 | * and turn quotaoff. The dquots won't be attached to any of the inodes | |
1388 | * at this point (because we intentionally didn't in dqget_noattach). | |
1389 | */ | |
1390 | if (error) { | |
8112e9dc | 1391 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
1da177e4 LT |
1392 | goto error_return; |
1393 | } | |
1da177e4 LT |
1394 | |
1395 | /* | |
1396 | * We didn't log anything, because if we crashed, we'll have to | |
1397 | * start the quotacheck from scratch anyway. However, we must make | |
1398 | * sure that our dquot changes are secure before we put the | |
1399 | * quotacheck'd stamp on the superblock. So, here we do a synchronous | |
1400 | * flush. | |
1401 | */ | |
a9add83e | 1402 | xfs_flush_buftarg(mp->m_ddev_targp, 1); |
1da177e4 LT |
1403 | |
1404 | /* | |
1405 | * If one type of quotas is off, then it will lose its | |
1406 | * quotachecked status, since we won't be doing accounting for | |
1407 | * that type anymore. | |
1408 | */ | |
4177af3a | 1409 | mp->m_qflags &= ~XFS_ALL_QUOTA_CHKD; |
1da177e4 LT |
1410 | mp->m_qflags |= flags; |
1411 | ||
1da177e4 LT |
1412 | error_return: |
1413 | if (error) { | |
0b932ccc DC |
1414 | xfs_warn(mp, |
1415 | "Quotacheck: Unsuccessful (Error %d): Disabling quotas.", | |
1416 | error); | |
1da177e4 LT |
1417 | /* |
1418 | * We must turn off quotas. | |
1419 | */ | |
1420 | ASSERT(mp->m_quotainfo != NULL); | |
1421 | ASSERT(xfs_Gqm != NULL); | |
1422 | xfs_qm_destroy_quotainfo(mp); | |
31d5577b | 1423 | if (xfs_mount_reset_sbqflags(mp)) { |
0b932ccc DC |
1424 | xfs_warn(mp, |
1425 | "Quotacheck: Failed to reset quota flags."); | |
31d5577b | 1426 | } |
0b932ccc DC |
1427 | } else |
1428 | xfs_notice(mp, "Quotacheck: Done."); | |
1da177e4 LT |
1429 | return (error); |
1430 | } | |
1431 | ||
1432 | /* | |
1433 | * This is called after the superblock has been read in and we're ready to | |
1434 | * iget the quota inodes. | |
1435 | */ | |
1436 | STATIC int | |
1437 | xfs_qm_init_quotainos( | |
1438 | xfs_mount_t *mp) | |
1439 | { | |
1440 | xfs_inode_t *uip, *gip; | |
1441 | int error; | |
1442 | __int64_t sbflags; | |
1443 | uint flags; | |
1444 | ||
1445 | ASSERT(mp->m_quotainfo); | |
1446 | uip = gip = NULL; | |
1447 | sbflags = 0; | |
1448 | flags = 0; | |
1449 | ||
1450 | /* | |
1451 | * Get the uquota and gquota inodes | |
1452 | */ | |
62118709 | 1453 | if (xfs_sb_version_hasquota(&mp->m_sb)) { |
1da177e4 LT |
1454 | if (XFS_IS_UQUOTA_ON(mp) && |
1455 | mp->m_sb.sb_uquotino != NULLFSINO) { | |
1456 | ASSERT(mp->m_sb.sb_uquotino > 0); | |
1457 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, | |
7b6259e7 | 1458 | 0, 0, &uip))) |
1da177e4 LT |
1459 | return XFS_ERROR(error); |
1460 | } | |
c8ad20ff | 1461 | if (XFS_IS_OQUOTA_ON(mp) && |
1da177e4 LT |
1462 | mp->m_sb.sb_gquotino != NULLFSINO) { |
1463 | ASSERT(mp->m_sb.sb_gquotino > 0); | |
1464 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, | |
7b6259e7 | 1465 | 0, 0, &gip))) { |
1da177e4 | 1466 | if (uip) |
43355099 | 1467 | IRELE(uip); |
1da177e4 LT |
1468 | return XFS_ERROR(error); |
1469 | } | |
1470 | } | |
1471 | } else { | |
1472 | flags |= XFS_QMOPT_SBVERSION; | |
1473 | sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | | |
1474 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS); | |
1475 | } | |
1476 | ||
1477 | /* | |
1478 | * Create the two inodes, if they don't exist already. The changes | |
1479 | * made above will get added to a transaction and logged in one of | |
1480 | * the qino_alloc calls below. If the device is readonly, | |
1481 | * temporarily switch to read-write to do this. | |
1482 | */ | |
1483 | if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { | |
1484 | if ((error = xfs_qm_qino_alloc(mp, &uip, | |
1485 | sbflags | XFS_SB_UQUOTINO, | |
1486 | flags | XFS_QMOPT_UQUOTA))) | |
1487 | return XFS_ERROR(error); | |
1488 | ||
1489 | flags &= ~XFS_QMOPT_SBVERSION; | |
1490 | } | |
c8ad20ff NS |
1491 | if (XFS_IS_OQUOTA_ON(mp) && gip == NULL) { |
1492 | flags |= (XFS_IS_GQUOTA_ON(mp) ? | |
1493 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); | |
1494 | error = xfs_qm_qino_alloc(mp, &gip, | |
1495 | sbflags | XFS_SB_GQUOTINO, flags); | |
1496 | if (error) { | |
1da177e4 | 1497 | if (uip) |
43355099 | 1498 | IRELE(uip); |
1da177e4 LT |
1499 | |
1500 | return XFS_ERROR(error); | |
1501 | } | |
1502 | } | |
1503 | ||
8a7b8a89 CH |
1504 | mp->m_quotainfo->qi_uquotaip = uip; |
1505 | mp->m_quotainfo->qi_gquotaip = gip; | |
1da177e4 | 1506 | |
014c2544 | 1507 | return 0; |
1da177e4 LT |
1508 | } |
1509 | ||
92b2e5b3 CH |
1510 | STATIC void |
1511 | xfs_qm_dqfree_one( | |
1512 | struct xfs_dquot *dqp) | |
1513 | { | |
1514 | struct xfs_mount *mp = dqp->q_mount; | |
1515 | struct xfs_quotainfo *qi = mp->m_quotainfo; | |
1da177e4 | 1516 | |
9f920f11 CH |
1517 | mutex_lock(&qi->qi_tree_lock); |
1518 | radix_tree_delete(XFS_DQUOT_TREE(qi, dqp->q_core.d_flags), | |
1519 | be32_to_cpu(dqp->q_core.d_id)); | |
1520 | mutex_unlock(&qi->qi_tree_lock); | |
368e1361 | 1521 | |
92b2e5b3 CH |
1522 | mutex_lock(&qi->qi_dqlist_lock); |
1523 | list_del_init(&dqp->q_mplist); | |
1524 | qi->qi_dquots--; | |
1525 | qi->qi_dqreclaims++; | |
1526 | mutex_unlock(&qi->qi_dqlist_lock); | |
1527 | ||
1528 | xfs_qm_dqdestroy(dqp); | |
1529 | } | |
1530 | ||
1531 | STATIC void | |
1532 | xfs_qm_dqreclaim_one( | |
1533 | struct xfs_dquot *dqp, | |
1534 | struct list_head *dispose_list) | |
1da177e4 | 1535 | { |
92b2e5b3 | 1536 | struct xfs_mount *mp = dqp->q_mount; |
f8739c3c | 1537 | struct xfs_quotainfo *qi = mp->m_quotainfo; |
92b2e5b3 | 1538 | int error; |
1da177e4 | 1539 | |
92b2e5b3 CH |
1540 | if (!xfs_dqlock_nowait(dqp)) |
1541 | goto out_busy; | |
bf72de31 | 1542 | |
92b2e5b3 CH |
1543 | /* |
1544 | * This dquot has acquired a reference in the meantime remove it from | |
1545 | * the freelist and try again. | |
1546 | */ | |
1547 | if (dqp->q_nrefs) { | |
1548 | xfs_dqunlock(dqp); | |
1da177e4 | 1549 | |
92b2e5b3 | 1550 | trace_xfs_dqreclaim_want(dqp); |
48776fd2 | 1551 | XFS_STATS_INC(xs_qm_dqwants); |
1da177e4 | 1552 | |
f8739c3c CH |
1553 | list_del_init(&dqp->q_lru); |
1554 | qi->qi_lru_count--; | |
48776fd2 | 1555 | XFS_STATS_DEC(xs_qm_dquot_unused); |
92b2e5b3 CH |
1556 | return; |
1557 | } | |
368e1361 | 1558 | |
92b2e5b3 | 1559 | ASSERT(!list_empty(&dqp->q_mplist)); |
1da177e4 | 1560 | |
92b2e5b3 CH |
1561 | /* |
1562 | * Try to grab the flush lock. If this dquot is in the process of | |
1563 | * getting flushed to disk, we don't want to reclaim it. | |
1564 | */ | |
1565 | if (!xfs_dqflock_nowait(dqp)) | |
1566 | goto out_busy; | |
0b1b213f | 1567 | |
92b2e5b3 CH |
1568 | /* |
1569 | * We have the flush lock so we know that this is not in the | |
1570 | * process of being flushed. So, if this is dirty, flush it | |
1571 | * DELWRI so that we don't get a freelist infested with | |
1572 | * dirty dquots. | |
1573 | */ | |
1574 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
1575 | trace_xfs_dqreclaim_dirty(dqp); | |
0b1b213f | 1576 | |
92b2e5b3 CH |
1577 | /* |
1578 | * We flush it delayed write, so don't bother releasing the | |
1579 | * freelist lock. | |
1580 | */ | |
1581 | error = xfs_qm_dqflush(dqp, 0); | |
1582 | if (error) { | |
1583 | xfs_warn(mp, "%s: dquot %p flush failed", | |
1584 | __func__, dqp); | |
1da177e4 | 1585 | } |
368e1361 | 1586 | |
1da177e4 | 1587 | /* |
92b2e5b3 CH |
1588 | * Give the dquot another try on the freelist, as the |
1589 | * flushing will take some time. | |
1da177e4 | 1590 | */ |
92b2e5b3 CH |
1591 | goto out_busy; |
1592 | } | |
1593 | xfs_dqfunlock(dqp); | |
92678554 | 1594 | |
92b2e5b3 CH |
1595 | /* |
1596 | * Prevent lookups now that we are past the point of no return. | |
1597 | */ | |
1598 | dqp->dq_flags |= XFS_DQ_FREEING; | |
1599 | xfs_dqunlock(dqp); | |
92678554 | 1600 | |
92b2e5b3 | 1601 | ASSERT(dqp->q_nrefs == 0); |
f8739c3c CH |
1602 | list_move_tail(&dqp->q_lru, dispose_list); |
1603 | qi->qi_lru_count--; | |
48776fd2 | 1604 | XFS_STATS_DEC(xs_qm_dquot_unused); |
92678554 | 1605 | |
92b2e5b3 | 1606 | trace_xfs_dqreclaim_done(dqp); |
48776fd2 | 1607 | XFS_STATS_INC(xs_qm_dqreclaims); |
92b2e5b3 | 1608 | return; |
1da177e4 | 1609 | |
92b2e5b3 CH |
1610 | out_busy: |
1611 | xfs_dqunlock(dqp); | |
368e1361 | 1612 | |
92b2e5b3 CH |
1613 | /* |
1614 | * Move the dquot to the tail of the list so that we don't spin on it. | |
1615 | */ | |
f8739c3c | 1616 | list_move_tail(&dqp->q_lru, &qi->qi_lru_list); |
368e1361 | 1617 | |
92b2e5b3 | 1618 | trace_xfs_dqreclaim_busy(dqp); |
48776fd2 | 1619 | XFS_STATS_INC(xs_qm_dqreclaim_misses); |
368e1361 | 1620 | } |
1da177e4 | 1621 | |
1da177e4 | 1622 | STATIC int |
7f8275d0 | 1623 | xfs_qm_shake( |
92b2e5b3 CH |
1624 | struct shrinker *shrink, |
1625 | struct shrink_control *sc) | |
1da177e4 | 1626 | { |
f8739c3c CH |
1627 | struct xfs_quotainfo *qi = |
1628 | container_of(shrink, struct xfs_quotainfo, qi_shrinker); | |
92b2e5b3 CH |
1629 | int nr_to_scan = sc->nr_to_scan; |
1630 | LIST_HEAD (dispose_list); | |
1631 | struct xfs_dquot *dqp; | |
1da177e4 | 1632 | |
92b2e5b3 | 1633 | if ((sc->gfp_mask & (__GFP_FS|__GFP_WAIT)) != (__GFP_FS|__GFP_WAIT)) |
014c2544 | 1634 | return 0; |
92b2e5b3 CH |
1635 | if (!nr_to_scan) |
1636 | goto out; | |
1da177e4 | 1637 | |
f8739c3c CH |
1638 | mutex_lock(&qi->qi_lru_lock); |
1639 | while (!list_empty(&qi->qi_lru_list)) { | |
92b2e5b3 CH |
1640 | if (nr_to_scan-- <= 0) |
1641 | break; | |
f8739c3c CH |
1642 | dqp = list_first_entry(&qi->qi_lru_list, struct xfs_dquot, |
1643 | q_lru); | |
92b2e5b3 | 1644 | xfs_qm_dqreclaim_one(dqp, &dispose_list); |
1da177e4 | 1645 | } |
f8739c3c | 1646 | mutex_unlock(&qi->qi_lru_lock); |
1da177e4 | 1647 | |
92b2e5b3 | 1648 | while (!list_empty(&dispose_list)) { |
f8739c3c CH |
1649 | dqp = list_first_entry(&dispose_list, struct xfs_dquot, q_lru); |
1650 | list_del_init(&dqp->q_lru); | |
92b2e5b3 CH |
1651 | xfs_qm_dqfree_one(dqp); |
1652 | } | |
1653 | out: | |
f8739c3c | 1654 | return (qi->qi_lru_count / 100) * sysctl_vfs_cache_pressure; |
1da177e4 LT |
1655 | } |
1656 | ||
1da177e4 LT |
1657 | /* |
1658 | * Start a transaction and write the incore superblock changes to | |
1659 | * disk. flags parameter indicates which fields have changed. | |
1660 | */ | |
1661 | int | |
1662 | xfs_qm_write_sb_changes( | |
1663 | xfs_mount_t *mp, | |
1664 | __int64_t flags) | |
1665 | { | |
1666 | xfs_trans_t *tp; | |
1667 | int error; | |
1668 | ||
1da177e4 LT |
1669 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); |
1670 | if ((error = xfs_trans_reserve(tp, 0, | |
1671 | mp->m_sb.sb_sectsize + 128, 0, | |
1672 | 0, | |
1673 | XFS_DEFAULT_LOG_COUNT))) { | |
1674 | xfs_trans_cancel(tp, 0); | |
014c2544 | 1675 | return error; |
1da177e4 LT |
1676 | } |
1677 | ||
1678 | xfs_mod_sb(tp, flags); | |
e5720eec | 1679 | error = xfs_trans_commit(tp, 0); |
1da177e4 | 1680 | |
e5720eec | 1681 | return error; |
1da177e4 LT |
1682 | } |
1683 | ||
1684 | ||
1685 | /* --------------- utility functions for vnodeops ---------------- */ | |
1686 | ||
1687 | ||
1688 | /* | |
6c77b0ea | 1689 | * Given an inode, a uid, gid and prid make sure that we have |
1da177e4 LT |
1690 | * allocated relevant dquot(s) on disk, and that we won't exceed inode |
1691 | * quotas by creating this file. | |
1692 | * This also attaches dquot(s) to the given inode after locking it, | |
1693 | * and returns the dquots corresponding to the uid and/or gid. | |
1694 | * | |
1695 | * in : inode (unlocked) | |
1696 | * out : udquot, gdquot with references taken and unlocked | |
1697 | */ | |
1698 | int | |
1699 | xfs_qm_vop_dqalloc( | |
7d095257 CH |
1700 | struct xfs_inode *ip, |
1701 | uid_t uid, | |
1702 | gid_t gid, | |
1703 | prid_t prid, | |
1704 | uint flags, | |
1705 | struct xfs_dquot **O_udqpp, | |
1706 | struct xfs_dquot **O_gdqpp) | |
1da177e4 | 1707 | { |
7d095257 CH |
1708 | struct xfs_mount *mp = ip->i_mount; |
1709 | struct xfs_dquot *uq, *gq; | |
1710 | int error; | |
1711 | uint lockflags; | |
1da177e4 | 1712 | |
7d095257 | 1713 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
1da177e4 LT |
1714 | return 0; |
1715 | ||
1716 | lockflags = XFS_ILOCK_EXCL; | |
1717 | xfs_ilock(ip, lockflags); | |
1718 | ||
bd186aa9 | 1719 | if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) |
1da177e4 LT |
1720 | gid = ip->i_d.di_gid; |
1721 | ||
1722 | /* | |
1723 | * Attach the dquot(s) to this inode, doing a dquot allocation | |
1724 | * if necessary. The dquot(s) will not be locked. | |
1725 | */ | |
1726 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
7d095257 CH |
1727 | error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); |
1728 | if (error) { | |
1da177e4 | 1729 | xfs_iunlock(ip, lockflags); |
014c2544 | 1730 | return error; |
1da177e4 LT |
1731 | } |
1732 | } | |
1733 | ||
1734 | uq = gq = NULL; | |
c8ad20ff | 1735 | if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { |
1da177e4 LT |
1736 | if (ip->i_d.di_uid != uid) { |
1737 | /* | |
1738 | * What we need is the dquot that has this uid, and | |
1739 | * if we send the inode to dqget, the uid of the inode | |
1740 | * takes priority over what's sent in the uid argument. | |
1741 | * We must unlock inode here before calling dqget if | |
1742 | * we're not sending the inode, because otherwise | |
1743 | * we'll deadlock by doing trans_reserve while | |
1744 | * holding ilock. | |
1745 | */ | |
1746 | xfs_iunlock(ip, lockflags); | |
1747 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t) uid, | |
1748 | XFS_DQ_USER, | |
1749 | XFS_QMOPT_DQALLOC | | |
1750 | XFS_QMOPT_DOWARN, | |
1751 | &uq))) { | |
1752 | ASSERT(error != ENOENT); | |
014c2544 | 1753 | return error; |
1da177e4 LT |
1754 | } |
1755 | /* | |
1756 | * Get the ilock in the right order. | |
1757 | */ | |
1758 | xfs_dqunlock(uq); | |
1759 | lockflags = XFS_ILOCK_SHARED; | |
1760 | xfs_ilock(ip, lockflags); | |
1761 | } else { | |
1762 | /* | |
1763 | * Take an extra reference, because we'll return | |
1764 | * this to caller | |
1765 | */ | |
1766 | ASSERT(ip->i_udquot); | |
78e55892 | 1767 | uq = xfs_qm_dqhold(ip->i_udquot); |
1da177e4 LT |
1768 | } |
1769 | } | |
c8ad20ff | 1770 | if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { |
1da177e4 LT |
1771 | if (ip->i_d.di_gid != gid) { |
1772 | xfs_iunlock(ip, lockflags); | |
1773 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)gid, | |
1774 | XFS_DQ_GROUP, | |
1775 | XFS_QMOPT_DQALLOC | | |
1776 | XFS_QMOPT_DOWARN, | |
1777 | &gq))) { | |
1778 | if (uq) | |
1779 | xfs_qm_dqrele(uq); | |
1780 | ASSERT(error != ENOENT); | |
014c2544 | 1781 | return error; |
1da177e4 LT |
1782 | } |
1783 | xfs_dqunlock(gq); | |
1784 | lockflags = XFS_ILOCK_SHARED; | |
1785 | xfs_ilock(ip, lockflags); | |
1786 | } else { | |
1787 | ASSERT(ip->i_gdquot); | |
78e55892 | 1788 | gq = xfs_qm_dqhold(ip->i_gdquot); |
1da177e4 | 1789 | } |
c8ad20ff | 1790 | } else if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { |
6743099c | 1791 | if (xfs_get_projid(ip) != prid) { |
c8ad20ff NS |
1792 | xfs_iunlock(ip, lockflags); |
1793 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, | |
1794 | XFS_DQ_PROJ, | |
1795 | XFS_QMOPT_DQALLOC | | |
1796 | XFS_QMOPT_DOWARN, | |
1797 | &gq))) { | |
1798 | if (uq) | |
1799 | xfs_qm_dqrele(uq); | |
1800 | ASSERT(error != ENOENT); | |
1801 | return (error); | |
1802 | } | |
1803 | xfs_dqunlock(gq); | |
1804 | lockflags = XFS_ILOCK_SHARED; | |
1805 | xfs_ilock(ip, lockflags); | |
1806 | } else { | |
1807 | ASSERT(ip->i_gdquot); | |
78e55892 | 1808 | gq = xfs_qm_dqhold(ip->i_gdquot); |
c8ad20ff | 1809 | } |
1da177e4 LT |
1810 | } |
1811 | if (uq) | |
0b1b213f | 1812 | trace_xfs_dquot_dqalloc(ip); |
1da177e4 LT |
1813 | |
1814 | xfs_iunlock(ip, lockflags); | |
1815 | if (O_udqpp) | |
1816 | *O_udqpp = uq; | |
1817 | else if (uq) | |
1818 | xfs_qm_dqrele(uq); | |
1819 | if (O_gdqpp) | |
1820 | *O_gdqpp = gq; | |
1821 | else if (gq) | |
1822 | xfs_qm_dqrele(gq); | |
014c2544 | 1823 | return 0; |
1da177e4 LT |
1824 | } |
1825 | ||
1826 | /* | |
1827 | * Actually transfer ownership, and do dquot modifications. | |
1828 | * These were already reserved. | |
1829 | */ | |
1830 | xfs_dquot_t * | |
1831 | xfs_qm_vop_chown( | |
1832 | xfs_trans_t *tp, | |
1833 | xfs_inode_t *ip, | |
1834 | xfs_dquot_t **IO_olddq, | |
1835 | xfs_dquot_t *newdq) | |
1836 | { | |
1837 | xfs_dquot_t *prevdq; | |
06d10dd9 NS |
1838 | uint bfield = XFS_IS_REALTIME_INODE(ip) ? |
1839 | XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; | |
1840 | ||
7d095257 | 1841 | |
579aa9ca | 1842 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
1843 | ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); |
1844 | ||
1845 | /* old dquot */ | |
1846 | prevdq = *IO_olddq; | |
1847 | ASSERT(prevdq); | |
1848 | ASSERT(prevdq != newdq); | |
1849 | ||
06d10dd9 NS |
1850 | xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); |
1851 | xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); | |
1da177e4 LT |
1852 | |
1853 | /* the sparkling new dquot */ | |
06d10dd9 NS |
1854 | xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); |
1855 | xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); | |
1da177e4 LT |
1856 | |
1857 | /* | |
78e55892 CH |
1858 | * Take an extra reference, because the inode is going to keep |
1859 | * this dquot pointer even after the trans_commit. | |
1da177e4 | 1860 | */ |
78e55892 | 1861 | *IO_olddq = xfs_qm_dqhold(newdq); |
1da177e4 | 1862 | |
014c2544 | 1863 | return prevdq; |
1da177e4 LT |
1864 | } |
1865 | ||
1866 | /* | |
c8ad20ff | 1867 | * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). |
1da177e4 LT |
1868 | */ |
1869 | int | |
1870 | xfs_qm_vop_chown_reserve( | |
1871 | xfs_trans_t *tp, | |
1872 | xfs_inode_t *ip, | |
1873 | xfs_dquot_t *udqp, | |
1874 | xfs_dquot_t *gdqp, | |
1875 | uint flags) | |
1876 | { | |
7d095257 | 1877 | xfs_mount_t *mp = ip->i_mount; |
9a2a7de2 | 1878 | uint delblks, blkflags, prjflags = 0; |
1da177e4 | 1879 | xfs_dquot_t *unresudq, *unresgdq, *delblksudq, *delblksgdq; |
7d095257 CH |
1880 | int error; |
1881 | ||
1da177e4 | 1882 | |
579aa9ca | 1883 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); |
1da177e4 LT |
1884 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1885 | ||
1886 | delblks = ip->i_delayed_blks; | |
1887 | delblksudq = delblksgdq = unresudq = unresgdq = NULL; | |
06d10dd9 NS |
1888 | blkflags = XFS_IS_REALTIME_INODE(ip) ? |
1889 | XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; | |
1da177e4 LT |
1890 | |
1891 | if (XFS_IS_UQUOTA_ON(mp) && udqp && | |
1149d96a | 1892 | ip->i_d.di_uid != (uid_t)be32_to_cpu(udqp->q_core.d_id)) { |
1da177e4 LT |
1893 | delblksudq = udqp; |
1894 | /* | |
1895 | * If there are delayed allocation blocks, then we have to | |
1896 | * unreserve those from the old dquot, and add them to the | |
1897 | * new dquot. | |
1898 | */ | |
1899 | if (delblks) { | |
1900 | ASSERT(ip->i_udquot); | |
1901 | unresudq = ip->i_udquot; | |
1902 | } | |
1903 | } | |
c8ad20ff | 1904 | if (XFS_IS_OQUOTA_ON(ip->i_mount) && gdqp) { |
9a2a7de2 | 1905 | if (XFS_IS_PQUOTA_ON(ip->i_mount) && |
6743099c | 1906 | xfs_get_projid(ip) != be32_to_cpu(gdqp->q_core.d_id)) |
9a2a7de2 NS |
1907 | prjflags = XFS_QMOPT_ENOSPC; |
1908 | ||
1909 | if (prjflags || | |
1910 | (XFS_IS_GQUOTA_ON(ip->i_mount) && | |
1911 | ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id))) { | |
c8ad20ff NS |
1912 | delblksgdq = gdqp; |
1913 | if (delblks) { | |
1914 | ASSERT(ip->i_gdquot); | |
1915 | unresgdq = ip->i_gdquot; | |
1916 | } | |
1da177e4 LT |
1917 | } |
1918 | } | |
1919 | ||
1920 | if ((error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, | |
1921 | delblksudq, delblksgdq, ip->i_d.di_nblocks, 1, | |
9a2a7de2 | 1922 | flags | blkflags | prjflags))) |
1da177e4 LT |
1923 | return (error); |
1924 | ||
1925 | /* | |
1926 | * Do the delayed blks reservations/unreservations now. Since, these | |
1927 | * are done without the help of a transaction, if a reservation fails | |
1928 | * its previous reservations won't be automatically undone by trans | |
1929 | * code. So, we have to do it manually here. | |
1930 | */ | |
1931 | if (delblks) { | |
1932 | /* | |
1933 | * Do the reservations first. Unreservation can't fail. | |
1934 | */ | |
1935 | ASSERT(delblksudq || delblksgdq); | |
1936 | ASSERT(unresudq || unresgdq); | |
1937 | if ((error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
1938 | delblksudq, delblksgdq, (xfs_qcnt_t)delblks, 0, | |
9a2a7de2 | 1939 | flags | blkflags | prjflags))) |
1da177e4 LT |
1940 | return (error); |
1941 | xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, | |
1942 | unresudq, unresgdq, -((xfs_qcnt_t)delblks), 0, | |
06d10dd9 | 1943 | blkflags); |
1da177e4 LT |
1944 | } |
1945 | ||
1946 | return (0); | |
1947 | } | |
1948 | ||
1949 | int | |
1950 | xfs_qm_vop_rename_dqattach( | |
7d095257 | 1951 | struct xfs_inode **i_tab) |
1da177e4 | 1952 | { |
7d095257 CH |
1953 | struct xfs_mount *mp = i_tab[0]->i_mount; |
1954 | int i; | |
1da177e4 | 1955 | |
7d095257 | 1956 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
014c2544 | 1957 | return 0; |
1da177e4 | 1958 | |
7d095257 CH |
1959 | for (i = 0; (i < 4 && i_tab[i]); i++) { |
1960 | struct xfs_inode *ip = i_tab[i]; | |
1961 | int error; | |
1962 | ||
1da177e4 LT |
1963 | /* |
1964 | * Watch out for duplicate entries in the table. | |
1965 | */ | |
7d095257 CH |
1966 | if (i == 0 || ip != i_tab[i-1]) { |
1967 | if (XFS_NOT_DQATTACHED(mp, ip)) { | |
1da177e4 LT |
1968 | error = xfs_qm_dqattach(ip, 0); |
1969 | if (error) | |
014c2544 | 1970 | return error; |
1da177e4 LT |
1971 | } |
1972 | } | |
1973 | } | |
014c2544 | 1974 | return 0; |
1da177e4 LT |
1975 | } |
1976 | ||
1977 | void | |
7d095257 CH |
1978 | xfs_qm_vop_create_dqattach( |
1979 | struct xfs_trans *tp, | |
1980 | struct xfs_inode *ip, | |
1981 | struct xfs_dquot *udqp, | |
1982 | struct xfs_dquot *gdqp) | |
1da177e4 | 1983 | { |
7d095257 CH |
1984 | struct xfs_mount *mp = tp->t_mountp; |
1985 | ||
1986 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) | |
1da177e4 LT |
1987 | return; |
1988 | ||
579aa9ca | 1989 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
7d095257 | 1990 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
1da177e4 LT |
1991 | |
1992 | if (udqp) { | |
1da177e4 | 1993 | ASSERT(ip->i_udquot == NULL); |
7d095257 | 1994 | ASSERT(XFS_IS_UQUOTA_ON(mp)); |
1149d96a | 1995 | ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); |
78e55892 CH |
1996 | |
1997 | ip->i_udquot = xfs_qm_dqhold(udqp); | |
1da177e4 LT |
1998 | xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); |
1999 | } | |
2000 | if (gdqp) { | |
1da177e4 | 2001 | ASSERT(ip->i_gdquot == NULL); |
7d095257 CH |
2002 | ASSERT(XFS_IS_OQUOTA_ON(mp)); |
2003 | ASSERT((XFS_IS_GQUOTA_ON(mp) ? | |
6743099c | 2004 | ip->i_d.di_gid : xfs_get_projid(ip)) == |
ee2a4f7c | 2005 | be32_to_cpu(gdqp->q_core.d_id)); |
78e55892 CH |
2006 | |
2007 | ip->i_gdquot = xfs_qm_dqhold(gdqp); | |
1da177e4 LT |
2008 | xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); |
2009 | } | |
2010 | } | |
2011 |