Commit | Line | Data |
---|---|---|
0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
4ce3121f NS |
3 | * Copyright (c) 2000-2003 Silicon Graphics, Inc. |
4 | * All Rights Reserved. | |
1da177e4 | 5 | */ |
1da177e4 LT |
6 | #include "xfs.h" |
7 | #include "xfs_fs.h" | |
6ca1c906 | 8 | #include "xfs_format.h" |
239880ef | 9 | #include "xfs_log_format.h" |
70a9883c | 10 | #include "xfs_shared.h" |
239880ef | 11 | #include "xfs_trans_resv.h" |
a844f451 | 12 | #include "xfs_bit.h" |
1da177e4 | 13 | #include "xfs_mount.h" |
3ab78df2 | 14 | #include "xfs_defer.h" |
1da177e4 LT |
15 | #include "xfs_inode.h" |
16 | #include "xfs_bmap.h" | |
239880ef | 17 | #include "xfs_quota.h" |
239880ef | 18 | #include "xfs_trans.h" |
1da177e4 LT |
19 | #include "xfs_buf_item.h" |
20 | #include "xfs_trans_space.h" | |
21 | #include "xfs_trans_priv.h" | |
1da177e4 | 22 | #include "xfs_qm.h" |
0b1b213f | 23 | #include "xfs_trace.h" |
239880ef | 24 | #include "xfs_log.h" |
a4fbe6ab | 25 | #include "xfs_bmap_btree.h" |
afeda600 | 26 | #include "xfs_error.h" |
841a5f87 | 27 | #include "xfs_health.h" |
1da177e4 | 28 | |
1da177e4 | 29 | /* |
bf72de31 CH |
30 | * Lock order: |
31 | * | |
32 | * ip->i_lock | |
9f920f11 | 33 | * qi->qi_tree_lock |
b84a3a96 CH |
34 | * dquot->q_qlock (xfs_dqlock() and friends) |
35 | * dquot->q_flush (xfs_dqflock() and friends) | |
36 | * qi->qi_lru_lock | |
bf72de31 CH |
37 | * |
38 | * If two dquots need to be locked the order is user before group/project, | |
39 | * otherwise by the lowest id first, see xfs_dqlock2. | |
40 | */ | |
1da177e4 | 41 | |
182696fb DW |
42 | struct kmem_cache *xfs_dqtrx_cache; |
43 | static struct kmem_cache *xfs_dquot_cache; | |
a05931ce | 44 | |
f112a049 DC |
45 | static struct lock_class_key xfs_dquot_group_class; |
46 | static struct lock_class_key xfs_dquot_project_class; | |
98b8c7a0 | 47 | |
841a5f87 DW |
48 | /* Record observations of quota corruption with the health tracking system. */ |
49 | static void | |
50 | xfs_dquot_mark_sick( | |
51 | struct xfs_dquot *dqp) | |
52 | { | |
53 | struct xfs_mount *mp = dqp->q_mount; | |
54 | ||
55 | switch (dqp->q_type) { | |
56 | case XFS_DQTYPE_USER: | |
57 | xfs_fs_mark_sick(mp, XFS_SICK_FS_UQUOTA); | |
58 | break; | |
59 | case XFS_DQTYPE_GROUP: | |
60 | xfs_fs_mark_sick(mp, XFS_SICK_FS_GQUOTA); | |
61 | break; | |
62 | case XFS_DQTYPE_PROJ: | |
63 | xfs_fs_mark_sick(mp, XFS_SICK_FS_PQUOTA); | |
64 | break; | |
65 | default: | |
66 | ASSERT(0); | |
67 | break; | |
68 | } | |
69 | } | |
70 | ||
1da177e4 LT |
71 | /* |
72 | * This is called to free all the memory associated with a dquot | |
73 | */ | |
74 | void | |
75 | xfs_qm_dqdestroy( | |
aefe69a4 | 76 | struct xfs_dquot *dqp) |
1da177e4 | 77 | { |
f8739c3c | 78 | ASSERT(list_empty(&dqp->q_lru)); |
1da177e4 | 79 | |
49292576 | 80 | kvfree(dqp->q_logitem.qli_item.li_lv_shadow); |
1da177e4 | 81 | mutex_destroy(&dqp->q_qlock); |
0b1b213f | 82 | |
ff6d6af2 | 83 | XFS_STATS_DEC(dqp->q_mount, xs_qm_dquot); |
182696fb | 84 | kmem_cache_free(xfs_dquot_cache, dqp); |
1da177e4 LT |
85 | } |
86 | ||
1da177e4 LT |
87 | /* |
88 | * If default limits are in force, push them into the dquot now. | |
89 | * We overwrite the dquot limits only if they are zero and this | |
90 | * is not the root dquot. | |
91 | */ | |
92 | void | |
93 | xfs_qm_adjust_dqlimits( | |
4b6eae2e | 94 | struct xfs_dquot *dq) |
1da177e4 | 95 | { |
c8c753e1 | 96 | struct xfs_mount *mp = dq->q_mount; |
4b6eae2e | 97 | struct xfs_quotainfo *q = mp->m_quotainfo; |
be607946 | 98 | struct xfs_def_quota *defq; |
b1366451 | 99 | int prealloc = 0; |
1da177e4 | 100 | |
c51df733 | 101 | ASSERT(dq->q_id); |
ce6e7e79 | 102 | defq = xfs_get_defquota(q, xfs_dquot_type(dq)); |
1da177e4 | 103 | |
12d720fb | 104 | if (!dq->q_blk.softlimit) { |
438769e3 | 105 | dq->q_blk.softlimit = defq->blk.soft; |
b1366451 BF |
106 | prealloc = 1; |
107 | } | |
12d720fb | 108 | if (!dq->q_blk.hardlimit) { |
438769e3 | 109 | dq->q_blk.hardlimit = defq->blk.hard; |
b1366451 BF |
110 | prealloc = 1; |
111 | } | |
12d720fb | 112 | if (!dq->q_ino.softlimit) |
438769e3 | 113 | dq->q_ino.softlimit = defq->ino.soft; |
12d720fb | 114 | if (!dq->q_ino.hardlimit) |
438769e3 | 115 | dq->q_ino.hardlimit = defq->ino.hard; |
12d720fb | 116 | if (!dq->q_rtb.softlimit) |
438769e3 | 117 | dq->q_rtb.softlimit = defq->rtb.soft; |
12d720fb | 118 | if (!dq->q_rtb.hardlimit) |
438769e3 | 119 | dq->q_rtb.hardlimit = defq->rtb.hard; |
b1366451 BF |
120 | |
121 | if (prealloc) | |
122 | xfs_dquot_set_prealloc_limits(dq); | |
1da177e4 LT |
123 | } |
124 | ||
11d8a919 DW |
125 | /* Set the expiration time of a quota's grace period. */ |
126 | time64_t | |
127 | xfs_dquot_set_timeout( | |
128 | struct xfs_mount *mp, | |
129 | time64_t timeout) | |
130 | { | |
131 | struct xfs_quotainfo *qi = mp->m_quotainfo; | |
132 | ||
133 | return clamp_t(time64_t, timeout, qi->qi_expiry_min, | |
134 | qi->qi_expiry_max); | |
135 | } | |
136 | ||
ccc8e771 DW |
137 | /* Set the length of the default grace period. */ |
138 | time64_t | |
139 | xfs_dquot_set_grace_period( | |
140 | time64_t grace) | |
141 | { | |
142 | return clamp_t(time64_t, grace, XFS_DQ_GRACE_MIN, XFS_DQ_GRACE_MAX); | |
143 | } | |
144 | ||
ea0cc6fa DW |
145 | /* |
146 | * Determine if this quota counter is over either limit and set the quota | |
147 | * timers as appropriate. | |
148 | */ | |
149 | static inline void | |
150 | xfs_qm_adjust_res_timer( | |
11d8a919 | 151 | struct xfs_mount *mp, |
ea0cc6fa DW |
152 | struct xfs_dquot_res *res, |
153 | struct xfs_quota_limits *qlim) | |
154 | { | |
155 | ASSERT(res->hardlimit == 0 || res->softlimit <= res->hardlimit); | |
156 | ||
157 | if ((res->softlimit && res->count > res->softlimit) || | |
158 | (res->hardlimit && res->count > res->hardlimit)) { | |
159 | if (res->timer == 0) | |
11d8a919 DW |
160 | res->timer = xfs_dquot_set_timeout(mp, |
161 | ktime_get_real_seconds() + qlim->time); | |
ea0cc6fa | 162 | } else { |
2e06df55 | 163 | res->timer = 0; |
ea0cc6fa DW |
164 | } |
165 | } | |
166 | ||
1da177e4 LT |
167 | /* |
168 | * Check the limits and timers of a dquot and start or reset timers | |
169 | * if necessary. | |
170 | * This gets called even when quota enforcement is OFF, which makes our | |
171 | * life a little less complicated. (We just don't reject any quota | |
172 | * reservations in that case, when enforcement is off). | |
173 | * We also return 0 as the values of the timers in Q_GETQUOTA calls, when | |
174 | * enforcement's off. | |
175 | * In contrast, warnings are a little different in that they don't | |
754002b4 NS |
176 | * 'automatically' get started when limits get exceeded. They do |
177 | * get reset to zero, however, when we find the count to be under | |
178 | * the soft limit (they are only ever set non-zero via userspace). | |
1da177e4 LT |
179 | */ |
180 | void | |
181 | xfs_qm_adjust_dqtimers( | |
3dbb9aa3 | 182 | struct xfs_dquot *dq) |
1da177e4 | 183 | { |
c8c753e1 | 184 | struct xfs_mount *mp = dq->q_mount; |
e850301f | 185 | struct xfs_quotainfo *qi = mp->m_quotainfo; |
e850301f ES |
186 | struct xfs_def_quota *defq; |
187 | ||
c51df733 | 188 | ASSERT(dq->q_id); |
e850301f | 189 | defq = xfs_get_defquota(qi, xfs_dquot_type(dq)); |
1da177e4 | 190 | |
11d8a919 DW |
191 | xfs_qm_adjust_res_timer(dq->q_mount, &dq->q_blk, &defq->blk); |
192 | xfs_qm_adjust_res_timer(dq->q_mount, &dq->q_ino, &defq->ino); | |
193 | xfs_qm_adjust_res_timer(dq->q_mount, &dq->q_rtb, &defq->rtb); | |
1da177e4 LT |
194 | } |
195 | ||
1da177e4 LT |
196 | /* |
197 | * initialize a buffer full of dquots and log the whole thing | |
198 | */ | |
a5b91555 | 199 | void |
1da177e4 | 200 | xfs_qm_init_dquot_blk( |
78bba5c8 | 201 | struct xfs_trans *tp, |
78bba5c8 | 202 | xfs_dqid_t id, |
1a7ed271 | 203 | xfs_dqtype_t type, |
78bba5c8 | 204 | struct xfs_buf *bp) |
1da177e4 | 205 | { |
a5b91555 | 206 | struct xfs_mount *mp = tp->t_mountp; |
8a7b8a89 | 207 | struct xfs_quotainfo *q = mp->m_quotainfo; |
78bba5c8 DW |
208 | struct xfs_dqblk *d; |
209 | xfs_dqid_t curid; | |
210 | unsigned int qflag; | |
211 | unsigned int blftype; | |
212 | int i; | |
1da177e4 LT |
213 | |
214 | ASSERT(tp); | |
0c842ad4 | 215 | ASSERT(xfs_buf_islocked(bp)); |
1da177e4 | 216 | |
e6eb603c DW |
217 | switch (type) { |
218 | case XFS_DQTYPE_USER: | |
219 | qflag = XFS_UQUOTA_CHKD; | |
220 | blftype = XFS_BLF_UDQUOT_BUF; | |
221 | break; | |
222 | case XFS_DQTYPE_PROJ: | |
223 | qflag = XFS_PQUOTA_CHKD; | |
224 | blftype = XFS_BLF_PDQUOT_BUF; | |
225 | break; | |
226 | case XFS_DQTYPE_GROUP: | |
227 | qflag = XFS_GQUOTA_CHKD; | |
228 | blftype = XFS_BLF_GDQUOT_BUF; | |
229 | break; | |
230 | default: | |
231 | ASSERT(0); | |
232 | return; | |
233 | } | |
234 | ||
62926044 | 235 | d = bp->b_addr; |
1da177e4 LT |
236 | |
237 | /* | |
238 | * ID of the first dquot in the block - id's are zero based. | |
239 | */ | |
8a7b8a89 | 240 | curid = id - (id % q->qi_dqperchunk); |
8a7b8a89 | 241 | memset(d, 0, BBTOB(q->qi_dqchunklen)); |
49d35a5c CH |
242 | for (i = 0; i < q->qi_dqperchunk; i++, d++, curid++) { |
243 | d->dd_diskdq.d_magic = cpu_to_be16(XFS_DQUOT_MAGIC); | |
244 | d->dd_diskdq.d_version = XFS_DQUOT_VERSION; | |
245 | d->dd_diskdq.d_id = cpu_to_be32(curid); | |
d8c1af0d | 246 | d->dd_diskdq.d_type = type; |
38c26bfd | 247 | if (curid > 0 && xfs_has_bigtime(mp)) |
4ea1ff3b | 248 | d->dd_diskdq.d_type |= XFS_DQTYPE_BIGTIME; |
38c26bfd | 249 | if (xfs_has_crc(mp)) { |
92863451 | 250 | uuid_copy(&d->dd_uuid, &mp->m_sb.sb_meta_uuid); |
6fcdc59d DC |
251 | xfs_update_cksum((char *)d, sizeof(struct xfs_dqblk), |
252 | XFS_DQUOT_CRC_OFF); | |
253 | } | |
49d35a5c CH |
254 | } |
255 | ||
78bba5c8 DW |
256 | xfs_trans_dquot_buf(tp, bp, blftype); |
257 | ||
258 | /* | |
259 | * quotacheck uses delayed writes to update all the dquots on disk in an | |
260 | * efficient manner instead of logging the individual dquot changes as | |
261 | * they are made. However if we log the buffer allocated here and crash | |
262 | * after quotacheck while the logged initialisation is still in the | |
263 | * active region of the log, log recovery can replay the dquot buffer | |
264 | * initialisation over the top of the checked dquots and corrupt quota | |
265 | * accounting. | |
266 | * | |
267 | * To avoid this problem, quotacheck cannot log the initialised buffer. | |
268 | * We must still dirty the buffer and write it back before the | |
269 | * allocation transaction clears the log. Therefore, mark the buffer as | |
270 | * ordered instead of logging it directly. This is safe for quotacheck | |
271 | * because it detects and repairs allocated but initialized dquot blocks | |
272 | * in the quota inodes. | |
273 | */ | |
274 | if (!(mp->m_qflags & qflag)) | |
275 | xfs_trans_ordered_buf(tp, bp); | |
276 | else | |
277 | xfs_trans_log_buf(tp, bp, 0, BBTOB(q->qi_dqchunklen) - 1); | |
1da177e4 LT |
278 | } |
279 | ||
b1366451 BF |
280 | /* |
281 | * Initialize the dynamic speculative preallocation thresholds. The lo/hi | |
282 | * watermarks correspond to the soft and hard limits by default. If a soft limit | |
283 | * is not specified, we use 95% of the hard limit. | |
284 | */ | |
285 | void | |
286 | xfs_dquot_set_prealloc_limits(struct xfs_dquot *dqp) | |
287 | { | |
c8ce540d | 288 | uint64_t space; |
b1366451 | 289 | |
d3537cf9 DW |
290 | dqp->q_prealloc_hi_wmark = dqp->q_blk.hardlimit; |
291 | dqp->q_prealloc_lo_wmark = dqp->q_blk.softlimit; | |
b1366451 BF |
292 | if (!dqp->q_prealloc_lo_wmark) { |
293 | dqp->q_prealloc_lo_wmark = dqp->q_prealloc_hi_wmark; | |
294 | do_div(dqp->q_prealloc_lo_wmark, 100); | |
295 | dqp->q_prealloc_lo_wmark *= 95; | |
296 | } | |
297 | ||
298 | space = dqp->q_prealloc_hi_wmark; | |
299 | ||
300 | do_div(space, 100); | |
301 | dqp->q_low_space[XFS_QLOWSP_1_PCNT] = space; | |
302 | dqp->q_low_space[XFS_QLOWSP_3_PCNT] = space * 3; | |
303 | dqp->q_low_space[XFS_QLOWSP_5_PCNT] = space * 5; | |
304 | } | |
305 | ||
1da177e4 | 306 | /* |
d63192c8 | 307 | * Ensure that the given in-core dquot has a buffer on disk backing it, and |
710d707d DW |
308 | * return the buffer locked and held. This is called when the bmapi finds a |
309 | * hole. | |
1da177e4 LT |
310 | */ |
311 | STATIC int | |
d63192c8 | 312 | xfs_dquot_disk_alloc( |
d63192c8 DW |
313 | struct xfs_dquot *dqp, |
314 | struct xfs_buf **bpp) | |
1da177e4 | 315 | { |
d63192c8 | 316 | struct xfs_bmbt_irec map; |
eae44cb3 DW |
317 | struct xfs_trans *tp; |
318 | struct xfs_mount *mp = dqp->q_mount; | |
d63192c8 | 319 | struct xfs_buf *bp; |
1a7ed271 | 320 | xfs_dqtype_t qtype = xfs_dquot_type(dqp); |
0b04dd5d | 321 | struct xfs_inode *quotip = xfs_quota_inode(mp, qtype); |
d63192c8 DW |
322 | int nmaps = 1; |
323 | int error; | |
0b1b213f CH |
324 | |
325 | trace_xfs_dqalloc(dqp); | |
1da177e4 | 326 | |
eae44cb3 DW |
327 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_qm_dqalloc, |
328 | XFS_QM_DQALLOC_SPACE_RES(mp), 0, 0, &tp); | |
329 | if (error) | |
330 | return error; | |
331 | ||
1da177e4 | 332 | xfs_ilock(quotip, XFS_ILOCK_EXCL); |
eae44cb3 DW |
333 | xfs_trans_ijoin(tp, quotip, 0); |
334 | ||
0b04dd5d | 335 | if (!xfs_this_quota_on(dqp->q_mount, qtype)) { |
d63192c8 DW |
336 | /* |
337 | * Return if this type of quotas is turned off while we didn't | |
338 | * have an inode lock | |
339 | */ | |
eae44cb3 DW |
340 | error = -ESRCH; |
341 | goto err_cancel; | |
1da177e4 LT |
342 | } |
343 | ||
727e1acd CB |
344 | error = xfs_iext_count_may_overflow(quotip, XFS_DATA_FORK, |
345 | XFS_IEXT_ADD_NOSPLIT_CNT); | |
4f86bb4b CB |
346 | if (error == -EFBIG) |
347 | error = xfs_iext_count_upgrade(tp, quotip, | |
348 | XFS_IEXT_ADD_NOSPLIT_CNT); | |
727e1acd | 349 | if (error) |
eae44cb3 | 350 | goto err_cancel; |
727e1acd CB |
351 | |
352 | /* Create the block mapping. */ | |
2ba13721 | 353 | error = xfs_bmapi_write(tp, quotip, dqp->q_fileoffset, |
da781e64 BF |
354 | XFS_DQUOT_CLUSTER_SIZE_FSB, XFS_BMAPI_METADATA, 0, &map, |
355 | &nmaps); | |
c0dc7828 | 356 | if (error) |
eae44cb3 DW |
357 | goto err_cancel; |
358 | ||
1da177e4 LT |
359 | ASSERT(map.br_blockcount == XFS_DQUOT_CLUSTER_SIZE_FSB); |
360 | ASSERT(nmaps == 1); | |
361 | ASSERT((map.br_startblock != DELAYSTARTBLOCK) && | |
362 | (map.br_startblock != HOLESTARTBLOCK)); | |
363 | ||
364 | /* | |
365 | * Keep track of the blkno to save a lookup later | |
366 | */ | |
367 | dqp->q_blkno = XFS_FSB_TO_DADDR(mp, map.br_startblock); | |
368 | ||
369 | /* now we can just get the buffer (there's nothing to read yet) */ | |
ce92464c DW |
370 | error = xfs_trans_get_buf(tp, mp->m_ddev_targp, dqp->q_blkno, |
371 | mp->m_quotainfo->qi_dqchunklen, 0, &bp); | |
372 | if (error) | |
eae44cb3 | 373 | goto err_cancel; |
1813dd64 | 374 | bp->b_ops = &xfs_dquot_buf_ops; |
2a30f36d | 375 | |
1da177e4 LT |
376 | /* |
377 | * Make a chunk of dquots out of this buffer and log | |
378 | * the entire thing. | |
379 | */ | |
a5b91555 | 380 | xfs_qm_init_dquot_blk(tp, dqp->q_id, qtype, bp); |
d63192c8 | 381 | xfs_buf_set_ref(bp, XFS_DQUOT_REF); |
1da177e4 | 382 | |
efa092f3 | 383 | /* |
7b6b50f5 DW |
384 | * Hold the buffer and join it to the dfops so that we'll still own |
385 | * the buffer when we return to the caller. The buffer disposal on | |
386 | * error must be paid attention to very carefully, as it has been | |
387 | * broken since commit efa092f3d4c6 "[XFS] Fixes a bug in the quota | |
388 | * code when allocating a new dquot record" in 2005, and the later | |
389 | * conversion to xfs_defer_ops in commit 310a75a3c6c747 failed to keep | |
390 | * the buffer locked across the _defer_finish call. We can now do | |
391 | * this correctly with xfs_defer_bjoin. | |
efa092f3 | 392 | * |
73971b17 BF |
393 | * Above, we allocated a disk block for the dquot information and used |
394 | * get_buf to initialize the dquot. If the _defer_finish fails, the old | |
7b6b50f5 DW |
395 | * transaction is gone but the new buffer is not joined or held to any |
396 | * transaction, so we must _buf_relse it. | |
efa092f3 | 397 | * |
7b6b50f5 | 398 | * If everything succeeds, the caller of this function is returned a |
d63192c8 | 399 | * buffer that is locked and held to the transaction. The caller |
7b6b50f5 | 400 | * is responsible for unlocking any buffer passed back, either |
710d707d DW |
401 | * manually or by committing the transaction. On error, the buffer is |
402 | * released and not passed back. | |
eae44cb3 DW |
403 | * |
404 | * Keep the quota inode ILOCKed until after the transaction commit to | |
405 | * maintain the atomicity of bmap/rmap updates. | |
efa092f3 | 406 | */ |
2ba13721 | 407 | xfs_trans_bhold(tp, bp); |
eae44cb3 DW |
408 | error = xfs_trans_commit(tp); |
409 | xfs_iunlock(quotip, XFS_ILOCK_EXCL); | |
7b6b50f5 | 410 | if (error) { |
eae44cb3 | 411 | xfs_buf_relse(bp); |
73971b17 | 412 | return error; |
efa092f3 | 413 | } |
eae44cb3 | 414 | |
d63192c8 | 415 | *bpp = bp; |
1da177e4 | 416 | return 0; |
eae44cb3 DW |
417 | |
418 | err_cancel: | |
419 | xfs_trans_cancel(tp); | |
420 | xfs_iunlock(quotip, XFS_ILOCK_EXCL); | |
421 | return error; | |
1da177e4 | 422 | } |
9aede1d8 | 423 | |
1da177e4 | 424 | /* |
d63192c8 DW |
425 | * Read in the in-core dquot's on-disk metadata and return the buffer. |
426 | * Returns ENOENT to signal a hole. | |
1da177e4 LT |
427 | */ |
428 | STATIC int | |
d63192c8 DW |
429 | xfs_dquot_disk_read( |
430 | struct xfs_mount *mp, | |
431 | struct xfs_dquot *dqp, | |
432 | struct xfs_buf **bpp) | |
1da177e4 | 433 | { |
113a5683 | 434 | struct xfs_bmbt_irec map; |
113a5683 | 435 | struct xfs_buf *bp; |
1a7ed271 | 436 | xfs_dqtype_t qtype = xfs_dquot_type(dqp); |
0b04dd5d | 437 | struct xfs_inode *quotip = xfs_quota_inode(mp, qtype); |
0891f997 | 438 | uint lock_mode; |
d63192c8 DW |
439 | int nmaps = 1; |
440 | int error; | |
1da177e4 | 441 | |
0891f997 | 442 | lock_mode = xfs_ilock_data_map_shared(quotip); |
0b04dd5d | 443 | if (!xfs_this_quota_on(mp, qtype)) { |
1da177e4 | 444 | /* |
acecf1b5 CH |
445 | * Return if this type of quotas is turned off while we |
446 | * didn't have the quota inode lock. | |
1da177e4 | 447 | */ |
0891f997 | 448 | xfs_iunlock(quotip, lock_mode); |
2451337d | 449 | return -ESRCH; |
acecf1b5 CH |
450 | } |
451 | ||
452 | /* | |
453 | * Find the block map; no allocations yet | |
454 | */ | |
5c8ed202 | 455 | error = xfs_bmapi_read(quotip, dqp->q_fileoffset, |
d63192c8 | 456 | XFS_DQUOT_CLUSTER_SIZE_FSB, &map, &nmaps, 0); |
0891f997 | 457 | xfs_iunlock(quotip, lock_mode); |
acecf1b5 CH |
458 | if (error) |
459 | return error; | |
460 | ||
461 | ASSERT(nmaps == 1); | |
d63192c8 DW |
462 | ASSERT(map.br_blockcount >= 1); |
463 | ASSERT(map.br_startblock != DELAYSTARTBLOCK); | |
464 | if (map.br_startblock == HOLESTARTBLOCK) | |
465 | return -ENOENT; | |
466 | ||
467 | trace_xfs_dqtobp_read(dqp); | |
acecf1b5 CH |
468 | |
469 | /* | |
d63192c8 DW |
470 | * store the blkno etc so that we don't have to do the |
471 | * mapping all the time | |
acecf1b5 | 472 | */ |
d63192c8 | 473 | dqp->q_blkno = XFS_FSB_TO_DADDR(mp, map.br_startblock); |
1da177e4 | 474 | |
d63192c8 DW |
475 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, dqp->q_blkno, |
476 | mp->m_quotainfo->qi_dqchunklen, 0, &bp, | |
477 | &xfs_dquot_buf_ops); | |
841a5f87 DW |
478 | if (xfs_metadata_is_sick(error)) |
479 | xfs_dquot_mark_sick(dqp); | |
d63192c8 DW |
480 | if (error) { |
481 | ASSERT(bp == NULL); | |
482 | return error; | |
1da177e4 LT |
483 | } |
484 | ||
c6319198 | 485 | ASSERT(xfs_buf_islocked(bp)); |
d63192c8 DW |
486 | xfs_buf_set_ref(bp, XFS_DQUOT_REF); |
487 | *bpp = bp; | |
1da177e4 | 488 | |
d99831ff | 489 | return 0; |
1da177e4 LT |
490 | } |
491 | ||
617cd5c1 DW |
492 | /* Allocate and initialize everything we need for an incore dquot. */ |
493 | STATIC struct xfs_dquot * | |
494 | xfs_dquot_alloc( | |
97e7ade5 CH |
495 | struct xfs_mount *mp, |
496 | xfs_dqid_t id, | |
1a7ed271 | 497 | xfs_dqtype_t type) |
1da177e4 | 498 | { |
97e7ade5 | 499 | struct xfs_dquot *dqp; |
92b2e5b3 | 500 | |
182696fb | 501 | dqp = kmem_cache_zalloc(xfs_dquot_cache, GFP_KERNEL | __GFP_NOFAIL); |
92b2e5b3 | 502 | |
1a7ed271 | 503 | dqp->q_type = type; |
c51df733 | 504 | dqp->q_id = id; |
92b2e5b3 | 505 | dqp->q_mount = mp; |
f8739c3c | 506 | INIT_LIST_HEAD(&dqp->q_lru); |
92b2e5b3 CH |
507 | mutex_init(&dqp->q_qlock); |
508 | init_waitqueue_head(&dqp->q_pinwait); | |
d63192c8 DW |
509 | dqp->q_fileoffset = (xfs_fileoff_t)id / mp->m_quotainfo->qi_dqperchunk; |
510 | /* | |
511 | * Offset of dquot in the (fixed sized) dquot chunk. | |
512 | */ | |
513 | dqp->q_bufoffset = (id % mp->m_quotainfo->qi_dqperchunk) * | |
11a83f4c | 514 | sizeof(struct xfs_dqblk); |
92b2e5b3 CH |
515 | |
516 | /* | |
517 | * Because we want to use a counting completion, complete | |
518 | * the flush completion once to allow a single access to | |
519 | * the flush completion without blocking. | |
520 | */ | |
521 | init_completion(&dqp->q_flush); | |
522 | complete(&dqp->q_flush); | |
523 | ||
524 | /* | |
525 | * Make sure group quotas have a different lock class than user | |
526 | * quotas. | |
527 | */ | |
f112a049 | 528 | switch (type) { |
8cd4901d | 529 | case XFS_DQTYPE_USER: |
f112a049 DC |
530 | /* uses the default lock class */ |
531 | break; | |
8cd4901d | 532 | case XFS_DQTYPE_GROUP: |
f112a049 DC |
533 | lockdep_set_class(&dqp->q_qlock, &xfs_dquot_group_class); |
534 | break; | |
8cd4901d | 535 | case XFS_DQTYPE_PROJ: |
f112a049 DC |
536 | lockdep_set_class(&dqp->q_qlock, &xfs_dquot_project_class); |
537 | break; | |
538 | default: | |
539 | ASSERT(0); | |
540 | break; | |
541 | } | |
92b2e5b3 | 542 | |
617cd5c1 DW |
543 | xfs_qm_dquot_logitem_init(dqp); |
544 | ||
ff6d6af2 | 545 | XFS_STATS_INC(mp, xs_qm_dquot); |
617cd5c1 DW |
546 | return dqp; |
547 | } | |
548 | ||
45068063 DW |
549 | /* Check the ondisk dquot's id and type match what the incore dquot expects. */ |
550 | static bool | |
551 | xfs_dquot_check_type( | |
552 | struct xfs_dquot *dqp, | |
553 | struct xfs_disk_dquot *ddqp) | |
554 | { | |
555 | uint8_t ddqp_type; | |
556 | uint8_t dqp_type; | |
557 | ||
558 | ddqp_type = ddqp->d_type & XFS_DQTYPE_REC_MASK; | |
559 | dqp_type = xfs_dquot_type(dqp); | |
560 | ||
561 | if (be32_to_cpu(ddqp->d_id) != dqp->q_id) | |
562 | return false; | |
563 | ||
564 | /* | |
565 | * V5 filesystems always expect an exact type match. V4 filesystems | |
566 | * expect an exact match for user dquots and for non-root group and | |
567 | * project dquots. | |
568 | */ | |
38c26bfd | 569 | if (xfs_has_crc(dqp->q_mount) || |
45068063 DW |
570 | dqp_type == XFS_DQTYPE_USER || dqp->q_id != 0) |
571 | return ddqp_type == dqp_type; | |
572 | ||
573 | /* | |
574 | * V4 filesystems support either group or project quotas, but not both | |
575 | * at the same time. The non-user quota file can be switched between | |
576 | * group and project quota uses depending on the mount options, which | |
577 | * means that we can encounter the other type when we try to load quota | |
29d286d0 | 578 | * defaults. Quotacheck will soon reset the entire quota file |
45068063 DW |
579 | * (including the root dquot) anyway, but don't log scary corruption |
580 | * reports to dmesg. | |
581 | */ | |
582 | return ddqp_type == XFS_DQTYPE_GROUP || ddqp_type == XFS_DQTYPE_PROJ; | |
583 | } | |
584 | ||
617cd5c1 | 585 | /* Copy the in-core quota fields in from the on-disk buffer. */ |
afeda600 | 586 | STATIC int |
617cd5c1 DW |
587 | xfs_dquot_from_disk( |
588 | struct xfs_dquot *dqp, | |
d63192c8 | 589 | struct xfs_buf *bp) |
617cd5c1 | 590 | { |
ed17f7da DW |
591 | struct xfs_dqblk *dqb = xfs_buf_offset(bp, dqp->q_bufoffset); |
592 | struct xfs_disk_dquot *ddqp = &dqb->dd_diskdq; | |
d63192c8 | 593 | |
afeda600 DW |
594 | /* |
595 | * Ensure that we got the type and ID we were looking for. | |
596 | * Everything else was checked by the dquot buffer verifier. | |
597 | */ | |
45068063 | 598 | if (!xfs_dquot_check_type(dqp, ddqp)) { |
afeda600 DW |
599 | xfs_alert_tag(bp->b_mount, XFS_PTAG_VERIFIER_ERROR, |
600 | "Metadata corruption detected at %pS, quota %u", | |
c51df733 | 601 | __this_address, dqp->q_id); |
afeda600 | 602 | xfs_alert(bp->b_mount, "Unmount and run xfs_repair"); |
841a5f87 | 603 | xfs_dquot_mark_sick(dqp); |
afeda600 DW |
604 | return -EFSCORRUPTED; |
605 | } | |
606 | ||
617cd5c1 | 607 | /* copy everything from disk dquot to the incore dquot */ |
d8c1af0d | 608 | dqp->q_type = ddqp->d_type; |
d3537cf9 DW |
609 | dqp->q_blk.hardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); |
610 | dqp->q_blk.softlimit = be64_to_cpu(ddqp->d_blk_softlimit); | |
611 | dqp->q_ino.hardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); | |
612 | dqp->q_ino.softlimit = be64_to_cpu(ddqp->d_ino_softlimit); | |
613 | dqp->q_rtb.hardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); | |
614 | dqp->q_rtb.softlimit = be64_to_cpu(ddqp->d_rtb_softlimit); | |
617cd5c1 | 615 | |
be37d40c DW |
616 | dqp->q_blk.count = be64_to_cpu(ddqp->d_bcount); |
617 | dqp->q_ino.count = be64_to_cpu(ddqp->d_icount); | |
618 | dqp->q_rtb.count = be64_to_cpu(ddqp->d_rtbcount); | |
619 | ||
9f99c8fe DW |
620 | dqp->q_blk.timer = xfs_dquot_from_disk_ts(ddqp, ddqp->d_btimer); |
621 | dqp->q_ino.timer = xfs_dquot_from_disk_ts(ddqp, ddqp->d_itimer); | |
622 | dqp->q_rtb.timer = xfs_dquot_from_disk_ts(ddqp, ddqp->d_rtbtimer); | |
19dce7ea | 623 | |
617cd5c1 DW |
624 | /* |
625 | * Reservation counters are defined as reservation plus current usage | |
626 | * to avoid having to add every time. | |
627 | */ | |
be37d40c DW |
628 | dqp->q_blk.reserved = dqp->q_blk.count; |
629 | dqp->q_ino.reserved = dqp->q_ino.count; | |
630 | dqp->q_rtb.reserved = dqp->q_rtb.count; | |
617cd5c1 DW |
631 | |
632 | /* initialize the dquot speculative prealloc thresholds */ | |
633 | xfs_dquot_set_prealloc_limits(dqp); | |
afeda600 | 634 | return 0; |
617cd5c1 | 635 | } |
1da177e4 | 636 | |
0b0fa1d1 DW |
637 | /* Copy the in-core quota fields into the on-disk buffer. */ |
638 | void | |
639 | xfs_dquot_to_disk( | |
640 | struct xfs_disk_dquot *ddqp, | |
641 | struct xfs_dquot *dqp) | |
642 | { | |
51dbb1be DW |
643 | ddqp->d_magic = cpu_to_be16(XFS_DQUOT_MAGIC); |
644 | ddqp->d_version = XFS_DQUOT_VERSION; | |
d8c1af0d | 645 | ddqp->d_type = dqp->q_type; |
51dbb1be DW |
646 | ddqp->d_id = cpu_to_be32(dqp->q_id); |
647 | ddqp->d_pad0 = 0; | |
648 | ddqp->d_pad = 0; | |
649 | ||
d3537cf9 DW |
650 | ddqp->d_blk_hardlimit = cpu_to_be64(dqp->q_blk.hardlimit); |
651 | ddqp->d_blk_softlimit = cpu_to_be64(dqp->q_blk.softlimit); | |
652 | ddqp->d_ino_hardlimit = cpu_to_be64(dqp->q_ino.hardlimit); | |
653 | ddqp->d_ino_softlimit = cpu_to_be64(dqp->q_ino.softlimit); | |
654 | ddqp->d_rtb_hardlimit = cpu_to_be64(dqp->q_rtb.hardlimit); | |
655 | ddqp->d_rtb_softlimit = cpu_to_be64(dqp->q_rtb.softlimit); | |
be37d40c DW |
656 | |
657 | ddqp->d_bcount = cpu_to_be64(dqp->q_blk.count); | |
658 | ddqp->d_icount = cpu_to_be64(dqp->q_ino.count); | |
659 | ddqp->d_rtbcount = cpu_to_be64(dqp->q_rtb.count); | |
c8c45fb2 | 660 | |
2e06df55 CH |
661 | ddqp->d_bwarns = 0; |
662 | ddqp->d_iwarns = 0; | |
663 | ddqp->d_rtbwarns = 0; | |
19dce7ea | 664 | |
9f99c8fe DW |
665 | ddqp->d_btimer = xfs_dquot_to_disk_ts(dqp, dqp->q_blk.timer); |
666 | ddqp->d_itimer = xfs_dquot_to_disk_ts(dqp, dqp->q_ino.timer); | |
667 | ddqp->d_rtbtimer = xfs_dquot_to_disk_ts(dqp, dqp->q_rtb.timer); | |
0b0fa1d1 DW |
668 | } |
669 | ||
617cd5c1 DW |
670 | /* |
671 | * Read in the ondisk dquot using dqtobp() then copy it to an incore version, | |
30ab2dcf DW |
672 | * and release the buffer immediately. If @can_alloc is true, fill any |
673 | * holes in the on-disk metadata. | |
617cd5c1 | 674 | */ |
114e73cc | 675 | static int |
617cd5c1 DW |
676 | xfs_qm_dqread( |
677 | struct xfs_mount *mp, | |
678 | xfs_dqid_t id, | |
1a7ed271 | 679 | xfs_dqtype_t type, |
30ab2dcf | 680 | bool can_alloc, |
d63192c8 | 681 | struct xfs_dquot **dqpp) |
617cd5c1 DW |
682 | { |
683 | struct xfs_dquot *dqp; | |
617cd5c1 | 684 | struct xfs_buf *bp; |
617cd5c1 DW |
685 | int error; |
686 | ||
687 | dqp = xfs_dquot_alloc(mp, id, type); | |
0b1b213f CH |
688 | trace_xfs_dqread(dqp); |
689 | ||
d63192c8 DW |
690 | /* Try to read the buffer, allocating if necessary. */ |
691 | error = xfs_dquot_disk_read(mp, dqp, &bp); | |
30ab2dcf | 692 | if (error == -ENOENT && can_alloc) |
eae44cb3 | 693 | error = xfs_dquot_disk_alloc(dqp, &bp); |
d63192c8 DW |
694 | if (error) |
695 | goto err; | |
1da177e4 LT |
696 | |
697 | /* | |
d63192c8 DW |
698 | * At this point we should have a clean locked buffer. Copy the data |
699 | * to the incore dquot and release the buffer since the incore dquot | |
700 | * has its own locking protocol so we needn't tie up the buffer any | |
701 | * further. | |
1da177e4 | 702 | */ |
0c842ad4 | 703 | ASSERT(xfs_buf_islocked(bp)); |
afeda600 | 704 | error = xfs_dquot_from_disk(dqp, bp); |
d63192c8 | 705 | xfs_buf_relse(bp); |
afeda600 DW |
706 | if (error) |
707 | goto err; | |
708 | ||
d63192c8 | 709 | *dqpp = dqp; |
97e7ade5 | 710 | return error; |
1da177e4 | 711 | |
d63192c8 DW |
712 | err: |
713 | trace_xfs_dqread_fail(dqp); | |
1da177e4 | 714 | xfs_qm_dqdestroy(dqp); |
d63192c8 | 715 | *dqpp = NULL; |
97e7ade5 | 716 | return error; |
1da177e4 LT |
717 | } |
718 | ||
296c24e2 ES |
719 | /* |
720 | * Advance to the next id in the current chunk, or if at the | |
721 | * end of the chunk, skip ahead to first id in next allocated chunk | |
722 | * using the SEEK_DATA interface. | |
723 | */ | |
6e3e6d55 | 724 | static int |
296c24e2 | 725 | xfs_dq_get_next_id( |
bda250db | 726 | struct xfs_mount *mp, |
1a7ed271 | 727 | xfs_dqtype_t type, |
bda250db | 728 | xfs_dqid_t *id) |
296c24e2 | 729 | { |
bda250db CH |
730 | struct xfs_inode *quotip = xfs_quota_inode(mp, type); |
731 | xfs_dqid_t next_id = *id + 1; /* simple advance */ | |
732 | uint lock_flags; | |
733 | struct xfs_bmbt_irec got; | |
b2b1712a | 734 | struct xfs_iext_cursor cur; |
296c24e2 | 735 | xfs_fsblock_t start; |
296c24e2 ES |
736 | int error = 0; |
737 | ||
657bdfb7 ES |
738 | /* If we'd wrap past the max ID, stop */ |
739 | if (next_id < *id) | |
740 | return -ENOENT; | |
741 | ||
296c24e2 ES |
742 | /* If new ID is within the current chunk, advancing it sufficed */ |
743 | if (next_id % mp->m_quotainfo->qi_dqperchunk) { | |
744 | *id = next_id; | |
745 | return 0; | |
746 | } | |
747 | ||
748 | /* Nope, next_id is now past the current chunk, so find the next one */ | |
749 | start = (xfs_fsblock_t)next_id / mp->m_quotainfo->qi_dqperchunk; | |
750 | ||
bda250db | 751 | lock_flags = xfs_ilock_data_map_shared(quotip); |
862a804a CH |
752 | error = xfs_iread_extents(NULL, quotip, XFS_DATA_FORK); |
753 | if (error) | |
754 | return error; | |
296c24e2 | 755 | |
b2b1712a | 756 | if (xfs_iext_lookup_extent(quotip, "ip->i_df, start, &cur, &got)) { |
2192b0ba BF |
757 | /* contiguous chunk, bump startoff for the id calculation */ |
758 | if (got.br_startoff < start) | |
759 | got.br_startoff = start; | |
bda250db | 760 | *id = got.br_startoff * mp->m_quotainfo->qi_dqperchunk; |
2192b0ba | 761 | } else { |
bda250db | 762 | error = -ENOENT; |
2192b0ba BF |
763 | } |
764 | ||
bda250db | 765 | xfs_iunlock(quotip, lock_flags); |
296c24e2 | 766 | |
bda250db | 767 | return error; |
296c24e2 ES |
768 | } |
769 | ||
cc2047c4 DW |
770 | /* |
771 | * Look up the dquot in the in-core cache. If found, the dquot is returned | |
772 | * locked and ready to go. | |
773 | */ | |
774 | static struct xfs_dquot * | |
775 | xfs_qm_dqget_cache_lookup( | |
776 | struct xfs_mount *mp, | |
777 | struct xfs_quotainfo *qi, | |
778 | struct radix_tree_root *tree, | |
779 | xfs_dqid_t id) | |
780 | { | |
781 | struct xfs_dquot *dqp; | |
782 | ||
783 | restart: | |
784 | mutex_lock(&qi->qi_tree_lock); | |
785 | dqp = radix_tree_lookup(tree, id); | |
786 | if (!dqp) { | |
787 | mutex_unlock(&qi->qi_tree_lock); | |
788 | XFS_STATS_INC(mp, xs_qm_dqcachemisses); | |
789 | return NULL; | |
790 | } | |
791 | ||
792 | xfs_dqlock(dqp); | |
985a78fd | 793 | if (dqp->q_flags & XFS_DQFLAG_FREEING) { |
cc2047c4 DW |
794 | xfs_dqunlock(dqp); |
795 | mutex_unlock(&qi->qi_tree_lock); | |
796 | trace_xfs_dqget_freeing(dqp); | |
797 | delay(1); | |
798 | goto restart; | |
799 | } | |
800 | ||
801 | dqp->q_nrefs++; | |
802 | mutex_unlock(&qi->qi_tree_lock); | |
803 | ||
804 | trace_xfs_dqget_hit(dqp); | |
805 | XFS_STATS_INC(mp, xs_qm_dqcachehits); | |
806 | return dqp; | |
807 | } | |
808 | ||
809 | /* | |
810 | * Try to insert a new dquot into the in-core cache. If an error occurs the | |
811 | * caller should throw away the dquot and start over. Otherwise, the dquot | |
812 | * is returned locked (and held by the cache) as if there had been a cache | |
813 | * hit. | |
0c6ca06a DC |
814 | * |
815 | * The insert needs to be done under memalloc_nofs context because the radix | |
816 | * tree can do memory allocation during insert. The qi->qi_tree_lock is taken in | |
817 | * memory reclaim when freeing unused dquots, so we cannot have the radix tree | |
818 | * node allocation recursing into filesystem reclaim whilst we hold the | |
819 | * qi_tree_lock. | |
cc2047c4 DW |
820 | */ |
821 | static int | |
822 | xfs_qm_dqget_cache_insert( | |
823 | struct xfs_mount *mp, | |
824 | struct xfs_quotainfo *qi, | |
825 | struct radix_tree_root *tree, | |
826 | xfs_dqid_t id, | |
827 | struct xfs_dquot *dqp) | |
828 | { | |
0c6ca06a | 829 | unsigned int nofs_flags; |
cc2047c4 DW |
830 | int error; |
831 | ||
0c6ca06a | 832 | nofs_flags = memalloc_nofs_save(); |
cc2047c4 DW |
833 | mutex_lock(&qi->qi_tree_lock); |
834 | error = radix_tree_insert(tree, id, dqp); | |
835 | if (unlikely(error)) { | |
836 | /* Duplicate found! Caller must try again. */ | |
cc2047c4 | 837 | trace_xfs_dqget_dup(dqp); |
0c6ca06a | 838 | goto out_unlock; |
cc2047c4 DW |
839 | } |
840 | ||
841 | /* Return a locked dquot to the caller, with a reference taken. */ | |
842 | xfs_dqlock(dqp); | |
843 | dqp->q_nrefs = 1; | |
cc2047c4 | 844 | qi->qi_dquots++; |
cc2047c4 | 845 | |
0c6ca06a DC |
846 | out_unlock: |
847 | mutex_unlock(&qi->qi_tree_lock); | |
848 | memalloc_nofs_restore(nofs_flags); | |
849 | return error; | |
cc2047c4 DW |
850 | } |
851 | ||
d7103eeb DW |
852 | /* Check our input parameters. */ |
853 | static int | |
854 | xfs_qm_dqget_checks( | |
855 | struct xfs_mount *mp, | |
1a7ed271 | 856 | xfs_dqtype_t type) |
d7103eeb | 857 | { |
d7103eeb | 858 | switch (type) { |
8cd4901d | 859 | case XFS_DQTYPE_USER: |
d7103eeb DW |
860 | if (!XFS_IS_UQUOTA_ON(mp)) |
861 | return -ESRCH; | |
862 | return 0; | |
8cd4901d | 863 | case XFS_DQTYPE_GROUP: |
d7103eeb DW |
864 | if (!XFS_IS_GQUOTA_ON(mp)) |
865 | return -ESRCH; | |
866 | return 0; | |
8cd4901d | 867 | case XFS_DQTYPE_PROJ: |
d7103eeb DW |
868 | if (!XFS_IS_PQUOTA_ON(mp)) |
869 | return -ESRCH; | |
870 | return 0; | |
871 | default: | |
872 | WARN_ON_ONCE(0); | |
873 | return -EINVAL; | |
874 | } | |
875 | } | |
876 | ||
1da177e4 | 877 | /* |
a647d109 KX |
878 | * Given the file system, id, and type (UDQUOT/GDQUOT/PDQUOT), return a |
879 | * locked dquot, doing an allocation (if requested) as needed. | |
1da177e4 LT |
880 | */ |
881 | int | |
882 | xfs_qm_dqget( | |
4882c19d DW |
883 | struct xfs_mount *mp, |
884 | xfs_dqid_t id, | |
1a7ed271 | 885 | xfs_dqtype_t type, |
30ab2dcf | 886 | bool can_alloc, |
4882c19d | 887 | struct xfs_dquot **O_dqpp) |
1da177e4 | 888 | { |
9f920f11 | 889 | struct xfs_quotainfo *qi = mp->m_quotainfo; |
4882c19d | 890 | struct radix_tree_root *tree = xfs_dquot_tree(qi, type); |
9f920f11 CH |
891 | struct xfs_dquot *dqp; |
892 | int error; | |
1da177e4 | 893 | |
d7103eeb DW |
894 | error = xfs_qm_dqget_checks(mp, type); |
895 | if (error) | |
896 | return error; | |
1da177e4 | 897 | |
4882c19d DW |
898 | restart: |
899 | dqp = xfs_qm_dqget_cache_lookup(mp, qi, tree, id); | |
900 | if (dqp) { | |
901 | *O_dqpp = dqp; | |
902 | return 0; | |
903 | } | |
904 | ||
30ab2dcf | 905 | error = xfs_qm_dqread(mp, id, type, can_alloc, &dqp); |
4882c19d DW |
906 | if (error) |
907 | return error; | |
908 | ||
909 | error = xfs_qm_dqget_cache_insert(mp, qi, tree, id, dqp); | |
910 | if (error) { | |
911 | /* | |
912 | * Duplicate found. Just throw away the new dquot and start | |
913 | * over. | |
914 | */ | |
915 | xfs_qm_dqdestroy(dqp); | |
916 | XFS_STATS_INC(mp, xs_qm_dquot_dups); | |
917 | goto restart; | |
918 | } | |
919 | ||
920 | trace_xfs_dqget_miss(dqp); | |
921 | *O_dqpp = dqp; | |
922 | return 0; | |
923 | } | |
924 | ||
114e73cc DW |
925 | /* |
926 | * Given a dquot id and type, read and initialize a dquot from the on-disk | |
927 | * metadata. This function is only for use during quota initialization so | |
928 | * it ignores the dquot cache assuming that the dquot shrinker isn't set up. | |
929 | * The caller is responsible for _qm_dqdestroy'ing the returned dquot. | |
930 | */ | |
931 | int | |
932 | xfs_qm_dqget_uncached( | |
933 | struct xfs_mount *mp, | |
934 | xfs_dqid_t id, | |
1a7ed271 | 935 | xfs_dqtype_t type, |
114e73cc DW |
936 | struct xfs_dquot **dqpp) |
937 | { | |
938 | int error; | |
939 | ||
940 | error = xfs_qm_dqget_checks(mp, type); | |
941 | if (error) | |
942 | return error; | |
943 | ||
944 | return xfs_qm_dqread(mp, id, type, 0, dqpp); | |
945 | } | |
946 | ||
4882c19d DW |
947 | /* Return the quota id for a given inode and type. */ |
948 | xfs_dqid_t | |
949 | xfs_qm_id_for_quotatype( | |
950 | struct xfs_inode *ip, | |
1a7ed271 | 951 | xfs_dqtype_t type) |
4882c19d DW |
952 | { |
953 | switch (type) { | |
8cd4901d | 954 | case XFS_DQTYPE_USER: |
ba8adad5 | 955 | return i_uid_read(VFS_I(ip)); |
8cd4901d | 956 | case XFS_DQTYPE_GROUP: |
ba8adad5 | 957 | return i_gid_read(VFS_I(ip)); |
8cd4901d | 958 | case XFS_DQTYPE_PROJ: |
ceaf603c | 959 | return ip->i_projid; |
1da177e4 | 960 | } |
4882c19d DW |
961 | ASSERT(0); |
962 | return 0; | |
963 | } | |
964 | ||
965 | /* | |
966 | * Return the dquot for a given inode and type. If @can_alloc is true, then | |
967 | * allocate blocks if needed. The inode's ILOCK must be held and it must not | |
968 | * have already had an inode attached. | |
969 | */ | |
970 | int | |
971 | xfs_qm_dqget_inode( | |
972 | struct xfs_inode *ip, | |
1a7ed271 | 973 | xfs_dqtype_t type, |
4882c19d DW |
974 | bool can_alloc, |
975 | struct xfs_dquot **O_dqpp) | |
976 | { | |
977 | struct xfs_mount *mp = ip->i_mount; | |
978 | struct xfs_quotainfo *qi = mp->m_quotainfo; | |
979 | struct radix_tree_root *tree = xfs_dquot_tree(qi, type); | |
980 | struct xfs_dquot *dqp; | |
981 | xfs_dqid_t id; | |
4882c19d DW |
982 | int error; |
983 | ||
984 | error = xfs_qm_dqget_checks(mp, type); | |
985 | if (error) | |
986 | return error; | |
987 | ||
3fed24ff | 988 | xfs_assert_ilocked(ip, XFS_ILOCK_EXCL); |
4882c19d DW |
989 | ASSERT(xfs_inode_dquot(ip, type) == NULL); |
990 | ||
991 | id = xfs_qm_id_for_quotatype(ip, type); | |
92678554 CH |
992 | |
993 | restart: | |
cc2047c4 | 994 | dqp = xfs_qm_dqget_cache_lookup(mp, qi, tree, id); |
9f920f11 | 995 | if (dqp) { |
9f920f11 CH |
996 | *O_dqpp = dqp; |
997 | return 0; | |
1da177e4 | 998 | } |
1da177e4 LT |
999 | |
1000 | /* | |
1001 | * Dquot cache miss. We don't want to keep the inode lock across | |
1002 | * a (potential) disk read. Also we don't want to deal with the lock | |
1003 | * ordering between quotainode and this inode. OTOH, dropping the inode | |
1004 | * lock here means dealing with a chown that can happen before | |
1005 | * we re-acquire the lock. | |
1006 | */ | |
4882c19d | 1007 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
30ab2dcf | 1008 | error = xfs_qm_dqread(mp, id, type, can_alloc, &dqp); |
4882c19d | 1009 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
7ae44407 CH |
1010 | if (error) |
1011 | return error; | |
1da177e4 | 1012 | |
4882c19d DW |
1013 | /* |
1014 | * A dquot could be attached to this inode by now, since we had | |
1015 | * dropped the ilock. | |
1016 | */ | |
1017 | if (xfs_this_quota_on(mp, type)) { | |
1018 | struct xfs_dquot *dqp1; | |
1019 | ||
1020 | dqp1 = xfs_inode_dquot(ip, type); | |
1021 | if (dqp1) { | |
36731410 | 1022 | xfs_qm_dqdestroy(dqp); |
4882c19d DW |
1023 | dqp = dqp1; |
1024 | xfs_dqlock(dqp); | |
1025 | goto dqret; | |
1da177e4 | 1026 | } |
4882c19d DW |
1027 | } else { |
1028 | /* inode stays locked on return */ | |
1029 | xfs_qm_dqdestroy(dqp); | |
1030 | return -ESRCH; | |
1da177e4 LT |
1031 | } |
1032 | ||
cc2047c4 DW |
1033 | error = xfs_qm_dqget_cache_insert(mp, qi, tree, id, dqp); |
1034 | if (error) { | |
1da177e4 | 1035 | /* |
9f920f11 CH |
1036 | * Duplicate found. Just throw away the new dquot and start |
1037 | * over. | |
1da177e4 | 1038 | */ |
9f920f11 | 1039 | xfs_qm_dqdestroy(dqp); |
ff6d6af2 | 1040 | XFS_STATS_INC(mp, xs_qm_dquot_dups); |
9f920f11 | 1041 | goto restart; |
1da177e4 LT |
1042 | } |
1043 | ||
4882c19d | 1044 | dqret: |
3fed24ff | 1045 | xfs_assert_ilocked(ip, XFS_ILOCK_EXCL); |
0b1b213f | 1046 | trace_xfs_dqget_miss(dqp); |
1da177e4 | 1047 | *O_dqpp = dqp; |
d99831ff | 1048 | return 0; |
1da177e4 LT |
1049 | } |
1050 | ||
2e330e76 DW |
1051 | /* |
1052 | * Starting at @id and progressing upwards, look for an initialized incore | |
1053 | * dquot, lock it, and return it. | |
1054 | */ | |
1055 | int | |
1056 | xfs_qm_dqget_next( | |
1057 | struct xfs_mount *mp, | |
1058 | xfs_dqid_t id, | |
1a7ed271 | 1059 | xfs_dqtype_t type, |
2e330e76 DW |
1060 | struct xfs_dquot **dqpp) |
1061 | { | |
1062 | struct xfs_dquot *dqp; | |
1063 | int error = 0; | |
1064 | ||
1065 | *dqpp = NULL; | |
1066 | for (; !error; error = xfs_dq_get_next_id(mp, type, &id)) { | |
30ab2dcf | 1067 | error = xfs_qm_dqget(mp, id, type, false, &dqp); |
2e330e76 DW |
1068 | if (error == -ENOENT) |
1069 | continue; | |
1070 | else if (error != 0) | |
1071 | break; | |
1072 | ||
1073 | if (!XFS_IS_DQUOT_UNINITIALIZED(dqp)) { | |
1074 | *dqpp = dqp; | |
1075 | return 0; | |
1076 | } | |
1077 | ||
1078 | xfs_qm_dqput(dqp); | |
1079 | } | |
1080 | ||
1081 | return error; | |
1082 | } | |
1083 | ||
f8739c3c CH |
1084 | /* |
1085 | * Release a reference to the dquot (decrement ref-count) and unlock it. | |
1086 | * | |
1087 | * If there is a group quota attached to this dquot, carefully release that | |
1088 | * too without tripping over deadlocks'n'stuff. | |
1089 | */ | |
1090 | void | |
1091 | xfs_qm_dqput( | |
1092 | struct xfs_dquot *dqp) | |
1093 | { | |
1094 | ASSERT(dqp->q_nrefs > 0); | |
1095 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
1096 | ||
1097 | trace_xfs_dqput(dqp); | |
1098 | ||
3c353375 DC |
1099 | if (--dqp->q_nrefs == 0) { |
1100 | struct xfs_quotainfo *qi = dqp->q_mount->m_quotainfo; | |
1101 | trace_xfs_dqput_free(dqp); | |
1102 | ||
0a97c01c | 1103 | if (list_lru_add_obj(&qi->qi_lru, &dqp->q_lru)) |
ff6d6af2 | 1104 | XFS_STATS_INC(dqp->q_mount, xs_qm_dquot_unused); |
3c353375 DC |
1105 | } |
1106 | xfs_dqunlock(dqp); | |
1da177e4 LT |
1107 | } |
1108 | ||
1109 | /* | |
1110 | * Release a dquot. Flush it if dirty, then dqput() it. | |
1111 | * dquot must not be locked. | |
1112 | */ | |
1113 | void | |
1114 | xfs_qm_dqrele( | |
aefe69a4 | 1115 | struct xfs_dquot *dqp) |
1da177e4 | 1116 | { |
7d095257 CH |
1117 | if (!dqp) |
1118 | return; | |
1119 | ||
0b1b213f | 1120 | trace_xfs_dqrele(dqp); |
1da177e4 LT |
1121 | |
1122 | xfs_dqlock(dqp); | |
1123 | /* | |
1124 | * We don't care to flush it if the dquot is dirty here. | |
1125 | * That will create stutters that we want to avoid. | |
1126 | * Instead we do a delayed write when we try to reclaim | |
1127 | * a dirty dquot. Also xfs_sync will take part of the burden... | |
1128 | */ | |
1129 | xfs_qm_dqput(dqp); | |
1130 | } | |
1131 | ||
ca30b2a7 CH |
1132 | /* |
1133 | * This is the dquot flushing I/O completion routine. It is called | |
1134 | * from interrupt level when the buffer containing the dquot is | |
1135 | * flushed to disk. It is responsible for removing the dquot logitem | |
1136 | * from the AIL if it has not been re-logged, and unlocking the dquot's | |
1137 | * flush lock. This behavior is very similar to that of inodes.. | |
1138 | */ | |
6f5de180 | 1139 | static void |
ca30b2a7 | 1140 | xfs_qm_dqflush_done( |
ca30b2a7 CH |
1141 | struct xfs_log_item *lip) |
1142 | { | |
fd8b81db | 1143 | struct xfs_dq_logitem *qip = (struct xfs_dq_logitem *)lip; |
aefe69a4 | 1144 | struct xfs_dquot *dqp = qip->qli_dquot; |
ca30b2a7 | 1145 | struct xfs_ail *ailp = lip->li_ailp; |
849274c1 | 1146 | xfs_lsn_t tail_lsn; |
ca30b2a7 CH |
1147 | |
1148 | /* | |
1149 | * We only want to pull the item from the AIL if its | |
1150 | * location in the log has not changed since we started the flush. | |
1151 | * Thus, we only bother if the dquot's lsn has | |
1152 | * not changed. First we check the lsn outside the lock | |
1153 | * since it's cheaper, and then we recheck while | |
1154 | * holding the lock before removing the dquot from the AIL. | |
1155 | */ | |
22525c17 | 1156 | if (test_bit(XFS_LI_IN_AIL, &lip->li_flags) && |
373b0589 | 1157 | ((lip->li_lsn == qip->qli_flush_lsn) || |
22525c17 | 1158 | test_bit(XFS_LI_FAILED, &lip->li_flags))) { |
ca30b2a7 | 1159 | |
57e80956 | 1160 | spin_lock(&ailp->ail_lock); |
e98084b8 | 1161 | xfs_clear_li_failed(lip); |
373b0589 | 1162 | if (lip->li_lsn == qip->qli_flush_lsn) { |
849274c1 BF |
1163 | /* xfs_ail_update_finish() drops the AIL lock */ |
1164 | tail_lsn = xfs_ail_delete_one(ailp, lip); | |
1165 | xfs_ail_update_finish(ailp, tail_lsn); | |
373b0589 | 1166 | } else { |
57e80956 | 1167 | spin_unlock(&ailp->ail_lock); |
373b0589 | 1168 | } |
ca30b2a7 CH |
1169 | } |
1170 | ||
1171 | /* | |
1172 | * Release the dq's flush lock since we're done with it. | |
1173 | */ | |
1174 | xfs_dqfunlock(dqp); | |
1175 | } | |
1da177e4 | 1176 | |
6f5de180 | 1177 | void |
664ffb8a | 1178 | xfs_buf_dquot_iodone( |
6f5de180 DC |
1179 | struct xfs_buf *bp) |
1180 | { | |
1181 | struct xfs_log_item *lip, *n; | |
1182 | ||
1183 | list_for_each_entry_safe(lip, n, &bp->b_li_list, li_bio_list) { | |
1184 | list_del_init(&lip->li_bio_list); | |
1185 | xfs_qm_dqflush_done(lip); | |
1186 | } | |
1187 | } | |
1188 | ||
664ffb8a CH |
1189 | void |
1190 | xfs_buf_dquot_io_fail( | |
1191 | struct xfs_buf *bp) | |
1192 | { | |
1193 | struct xfs_log_item *lip; | |
1194 | ||
1195 | spin_lock(&bp->b_mount->m_ail->ail_lock); | |
1196 | list_for_each_entry(lip, &bp->b_li_list, li_bio_list) | |
1197 | xfs_set_li_failed(lip, bp); | |
1198 | spin_unlock(&bp->b_mount->m_ail->ail_lock); | |
1199 | } | |
1200 | ||
0b0fa1d1 DW |
1201 | /* Check incore dquot for errors before we flush. */ |
1202 | static xfs_failaddr_t | |
1203 | xfs_qm_dqflush_check( | |
1204 | struct xfs_dquot *dqp) | |
1205 | { | |
1a7ed271 | 1206 | xfs_dqtype_t type = xfs_dquot_type(dqp); |
0b0fa1d1 | 1207 | |
8cd4901d DW |
1208 | if (type != XFS_DQTYPE_USER && |
1209 | type != XFS_DQTYPE_GROUP && | |
1210 | type != XFS_DQTYPE_PROJ) | |
0b0fa1d1 DW |
1211 | return __this_address; |
1212 | ||
d3537cf9 DW |
1213 | if (dqp->q_id == 0) |
1214 | return NULL; | |
1215 | ||
be37d40c | 1216 | if (dqp->q_blk.softlimit && dqp->q_blk.count > dqp->q_blk.softlimit && |
19dce7ea | 1217 | !dqp->q_blk.timer) |
d3537cf9 DW |
1218 | return __this_address; |
1219 | ||
be37d40c | 1220 | if (dqp->q_ino.softlimit && dqp->q_ino.count > dqp->q_ino.softlimit && |
19dce7ea | 1221 | !dqp->q_ino.timer) |
d3537cf9 DW |
1222 | return __this_address; |
1223 | ||
be37d40c | 1224 | if (dqp->q_rtb.softlimit && dqp->q_rtb.count > dqp->q_rtb.softlimit && |
19dce7ea | 1225 | !dqp->q_rtb.timer) |
d3537cf9 DW |
1226 | return __this_address; |
1227 | ||
4ea1ff3b DW |
1228 | /* bigtime flag should never be set on root dquots */ |
1229 | if (dqp->q_type & XFS_DQTYPE_BIGTIME) { | |
38c26bfd | 1230 | if (!xfs_has_bigtime(dqp->q_mount)) |
4ea1ff3b DW |
1231 | return __this_address; |
1232 | if (dqp->q_id == 0) | |
1233 | return __this_address; | |
1234 | } | |
1235 | ||
0b0fa1d1 DW |
1236 | return NULL; |
1237 | } | |
1238 | ||
1da177e4 LT |
1239 | /* |
1240 | * Write a modified dquot to disk. | |
1241 | * The dquot must be locked and the flush lock too taken by caller. | |
1242 | * The flush lock will not be unlocked until the dquot reaches the disk, | |
1243 | * but the dquot is free to be unlocked and modified by the caller | |
1244 | * in the interim. Dquot is still locked on return. This behavior is | |
1245 | * identical to that of inodes. | |
1246 | */ | |
1247 | int | |
1248 | xfs_qm_dqflush( | |
fe7257fd CH |
1249 | struct xfs_dquot *dqp, |
1250 | struct xfs_buf **bpp) | |
1da177e4 | 1251 | { |
acecf1b5 | 1252 | struct xfs_mount *mp = dqp->q_mount; |
b707fffd | 1253 | struct xfs_log_item *lip = &dqp->q_logitem.qli_item; |
acecf1b5 | 1254 | struct xfs_buf *bp; |
51dbb1be | 1255 | struct xfs_dqblk *dqblk; |
eebf3cab | 1256 | xfs_failaddr_t fa; |
1da177e4 | 1257 | int error; |
1da177e4 LT |
1258 | |
1259 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
e1f49cf2 | 1260 | ASSERT(!completion_done(&dqp->q_flush)); |
acecf1b5 | 1261 | |
0b1b213f | 1262 | trace_xfs_dqflush(dqp); |
1da177e4 | 1263 | |
fe7257fd CH |
1264 | *bpp = NULL; |
1265 | ||
1da177e4 LT |
1266 | xfs_qm_dqunpin_wait(dqp); |
1267 | ||
1da177e4 LT |
1268 | /* |
1269 | * Get the buffer containing the on-disk dquot | |
1da177e4 | 1270 | */ |
acecf1b5 | 1271 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, dqp->q_blkno, |
8d3d7e2b BF |
1272 | mp->m_quotainfo->qi_dqchunklen, XBF_TRYLOCK, |
1273 | &bp, &xfs_dquot_buf_ops); | |
b707fffd | 1274 | if (error == -EAGAIN) |
fe7257fd | 1275 | goto out_unlock; |
841a5f87 DW |
1276 | if (xfs_metadata_is_sick(error)) |
1277 | xfs_dquot_mark_sick(dqp); | |
b707fffd BF |
1278 | if (error) |
1279 | goto out_abort; | |
1da177e4 | 1280 | |
0b0fa1d1 DW |
1281 | fa = xfs_qm_dqflush_check(dqp); |
1282 | if (fa) { | |
1283 | xfs_alert(mp, "corrupt dquot ID 0x%x in memory at %pS", | |
c51df733 | 1284 | dqp->q_id, fa); |
0b0fa1d1 | 1285 | xfs_buf_relse(bp); |
841a5f87 | 1286 | xfs_dquot_mark_sick(dqp); |
0b0fa1d1 DW |
1287 | error = -EFSCORRUPTED; |
1288 | goto out_abort; | |
1289 | } | |
1290 | ||
51dbb1be | 1291 | /* Flush the incore dquot to the ondisk buffer. */ |
ed17f7da | 1292 | dqblk = xfs_buf_offset(bp, dqp->q_bufoffset); |
51dbb1be | 1293 | xfs_dquot_to_disk(&dqblk->dd_diskdq, dqp); |
1da177e4 LT |
1294 | |
1295 | /* | |
1296 | * Clear the dirty field and remember the flush lsn for later use. | |
1297 | */ | |
985a78fd | 1298 | dqp->q_flags &= ~XFS_DQFLAG_DIRTY; |
1da177e4 | 1299 | |
7b2e2a31 DC |
1300 | xfs_trans_ail_copy_lsn(mp->m_ail, &dqp->q_logitem.qli_flush_lsn, |
1301 | &dqp->q_logitem.qli_item.li_lsn); | |
1da177e4 | 1302 | |
3fe58f30 CH |
1303 | /* |
1304 | * copy the lsn into the on-disk dquot now while we have the in memory | |
1305 | * dquot here. This can't be done later in the write verifier as we | |
1306 | * can't get access to the log item at that point in time. | |
6fcdc59d DC |
1307 | * |
1308 | * We also calculate the CRC here so that the on-disk dquot in the | |
1309 | * buffer always has a valid CRC. This ensures there is no possibility | |
1310 | * of a dquot without an up-to-date CRC getting to disk. | |
3fe58f30 | 1311 | */ |
38c26bfd | 1312 | if (xfs_has_crc(mp)) { |
51dbb1be DW |
1313 | dqblk->dd_lsn = cpu_to_be64(dqp->q_logitem.qli_item.li_lsn); |
1314 | xfs_update_cksum((char *)dqblk, sizeof(struct xfs_dqblk), | |
6fcdc59d | 1315 | XFS_DQUOT_CRC_OFF); |
3fe58f30 CH |
1316 | } |
1317 | ||
1da177e4 | 1318 | /* |
2ef3f7f5 DC |
1319 | * Attach the dquot to the buffer so that we can remove this dquot from |
1320 | * the AIL and release the flush lock once the dquot is synced to disk. | |
1da177e4 | 1321 | */ |
0c7e5afb | 1322 | bp->b_flags |= _XBF_DQUOTS; |
2ef3f7f5 | 1323 | list_add_tail(&dqp->q_logitem.qli_item.li_bio_list, &bp->b_li_list); |
ca30b2a7 | 1324 | |
1da177e4 LT |
1325 | /* |
1326 | * If the buffer is pinned then push on the log so we won't | |
1327 | * get stuck waiting in the write for too long. | |
1328 | */ | |
811e64c7 | 1329 | if (xfs_buf_ispinned(bp)) { |
0b1b213f | 1330 | trace_xfs_dqflush_force(dqp); |
a14a348b | 1331 | xfs_log_force(mp, 0); |
1da177e4 LT |
1332 | } |
1333 | ||
0b1b213f | 1334 | trace_xfs_dqflush_done(dqp); |
fe7257fd CH |
1335 | *bpp = bp; |
1336 | return 0; | |
0b1b213f | 1337 | |
b707fffd | 1338 | out_abort: |
985a78fd | 1339 | dqp->q_flags &= ~XFS_DQFLAG_DIRTY; |
2b3cf093 | 1340 | xfs_trans_ail_delete(lip, 0); |
b707fffd | 1341 | xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); |
fe7257fd CH |
1342 | out_unlock: |
1343 | xfs_dqfunlock(dqp); | |
8d3d7e2b | 1344 | return error; |
1da177e4 LT |
1345 | } |
1346 | ||
5bb87a33 CH |
1347 | /* |
1348 | * Lock two xfs_dquot structures. | |
1349 | * | |
1350 | * To avoid deadlocks we always lock the quota structure with | |
1351 | * the lowerd id first. | |
1352 | */ | |
1da177e4 LT |
1353 | void |
1354 | xfs_dqlock2( | |
aefe69a4 PR |
1355 | struct xfs_dquot *d1, |
1356 | struct xfs_dquot *d2) | |
1da177e4 LT |
1357 | { |
1358 | if (d1 && d2) { | |
1359 | ASSERT(d1 != d2); | |
c51df733 | 1360 | if (d1->q_id > d2->q_id) { |
5bb87a33 CH |
1361 | mutex_lock(&d2->q_qlock); |
1362 | mutex_lock_nested(&d1->q_qlock, XFS_QLOCK_NESTED); | |
1da177e4 | 1363 | } else { |
5bb87a33 CH |
1364 | mutex_lock(&d1->q_qlock); |
1365 | mutex_lock_nested(&d2->q_qlock, XFS_QLOCK_NESTED); | |
1da177e4 | 1366 | } |
5bb87a33 CH |
1367 | } else if (d1) { |
1368 | mutex_lock(&d1->q_qlock); | |
1369 | } else if (d2) { | |
1370 | mutex_lock(&d2->q_qlock); | |
1da177e4 LT |
1371 | } |
1372 | } | |
1373 | ||
a05931ce CH |
1374 | int __init |
1375 | xfs_qm_init(void) | |
1376 | { | |
182696fb | 1377 | xfs_dquot_cache = kmem_cache_create("xfs_dquot", |
b1231760 CM |
1378 | sizeof(struct xfs_dquot), |
1379 | 0, 0, NULL); | |
182696fb | 1380 | if (!xfs_dquot_cache) |
a05931ce CH |
1381 | goto out; |
1382 | ||
182696fb | 1383 | xfs_dqtrx_cache = kmem_cache_create("xfs_dqtrx", |
b1231760 CM |
1384 | sizeof(struct xfs_dquot_acct), |
1385 | 0, 0, NULL); | |
182696fb DW |
1386 | if (!xfs_dqtrx_cache) |
1387 | goto out_free_dquot_cache; | |
a05931ce CH |
1388 | |
1389 | return 0; | |
1390 | ||
182696fb DW |
1391 | out_free_dquot_cache: |
1392 | kmem_cache_destroy(xfs_dquot_cache); | |
a05931ce CH |
1393 | out: |
1394 | return -ENOMEM; | |
1395 | } | |
1396 | ||
1c2ccc66 | 1397 | void |
a05931ce CH |
1398 | xfs_qm_exit(void) |
1399 | { | |
182696fb DW |
1400 | kmem_cache_destroy(xfs_dqtrx_cache); |
1401 | kmem_cache_destroy(xfs_dquot_cache); | |
a05931ce | 1402 | } |