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Commit | Line | Data |
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1da177e4 | 1 | /* |
4ce3121f NS |
2 | * Copyright (c) 2000-2003 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
4ce3121f NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
4ce3121f NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
4ce3121f NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 LT |
18 | #include "xfs.h" |
19 | #include "xfs_fs.h" | |
a844f451 | 20 | #include "xfs_bit.h" |
1da177e4 | 21 | #include "xfs_log.h" |
a844f451 | 22 | #include "xfs_inum.h" |
1da177e4 LT |
23 | #include "xfs_trans.h" |
24 | #include "xfs_sb.h" | |
25 | #include "xfs_ag.h" | |
1da177e4 LT |
26 | #include "xfs_dir2.h" |
27 | #include "xfs_alloc.h" | |
28 | #include "xfs_dmapi.h" | |
29 | #include "xfs_quota.h" | |
30 | #include "xfs_mount.h" | |
1da177e4 | 31 | #include "xfs_bmap_btree.h" |
a844f451 | 32 | #include "xfs_alloc_btree.h" |
1da177e4 | 33 | #include "xfs_ialloc_btree.h" |
1da177e4 | 34 | #include "xfs_dir2_sf.h" |
a844f451 | 35 | #include "xfs_attr_sf.h" |
1da177e4 LT |
36 | #include "xfs_dinode.h" |
37 | #include "xfs_inode.h" | |
a844f451 NS |
38 | #include "xfs_btree.h" |
39 | #include "xfs_ialloc.h" | |
1da177e4 | 40 | #include "xfs_bmap.h" |
1da177e4 LT |
41 | #include "xfs_rtalloc.h" |
42 | #include "xfs_error.h" | |
43 | #include "xfs_itable.h" | |
44 | #include "xfs_rw.h" | |
1da177e4 LT |
45 | #include "xfs_attr.h" |
46 | #include "xfs_buf_item.h" | |
47 | #include "xfs_trans_space.h" | |
48 | #include "xfs_trans_priv.h" | |
1da177e4 | 49 | #include "xfs_qm.h" |
0b1b213f | 50 | #include "xfs_trace.h" |
1da177e4 LT |
51 | |
52 | ||
53 | /* | |
54 | LOCK ORDER | |
55 | ||
56 | inode lock (ilock) | |
57 | dquot hash-chain lock (hashlock) | |
58 | xqm dquot freelist lock (freelistlock | |
59 | mount's dquot list lock (mplistlock) | |
60 | user dquot lock - lock ordering among dquots is based on the uid or gid | |
61 | group dquot lock - similar to udquots. Between the two dquots, the udquot | |
62 | has to be locked first. | |
63 | pin lock - the dquot lock must be held to take this lock. | |
64 | flush lock - ditto. | |
65 | */ | |
66 | ||
67 | STATIC void xfs_qm_dqflush_done(xfs_buf_t *, xfs_dq_logitem_t *); | |
68 | ||
69 | #ifdef DEBUG | |
70 | xfs_buftarg_t *xfs_dqerror_target; | |
71 | int xfs_do_dqerror; | |
72 | int xfs_dqreq_num; | |
73 | int xfs_dqerror_mod = 33; | |
74 | #endif | |
75 | ||
98b8c7a0 CH |
76 | static struct lock_class_key xfs_dquot_other_class; |
77 | ||
1da177e4 LT |
78 | /* |
79 | * Allocate and initialize a dquot. We don't always allocate fresh memory; | |
80 | * we try to reclaim a free dquot if the number of incore dquots are above | |
81 | * a threshold. | |
82 | * The only field inside the core that gets initialized at this point | |
83 | * is the d_id field. The idea is to fill in the entire q_core | |
84 | * when we read in the on disk dquot. | |
85 | */ | |
ba0f32d4 | 86 | STATIC xfs_dquot_t * |
1da177e4 LT |
87 | xfs_qm_dqinit( |
88 | xfs_mount_t *mp, | |
89 | xfs_dqid_t id, | |
90 | uint type) | |
91 | { | |
92 | xfs_dquot_t *dqp; | |
93 | boolean_t brandnewdquot; | |
94 | ||
95 | brandnewdquot = xfs_qm_dqalloc_incore(&dqp); | |
96 | dqp->dq_flags = type; | |
1149d96a | 97 | dqp->q_core.d_id = cpu_to_be32(id); |
1da177e4 LT |
98 | dqp->q_mount = mp; |
99 | ||
100 | /* | |
101 | * No need to re-initialize these if this is a reclaimed dquot. | |
102 | */ | |
103 | if (brandnewdquot) { | |
3a8406f6 | 104 | INIT_LIST_HEAD(&dqp->q_freelist); |
794ee1ba | 105 | mutex_init(&dqp->q_qlock); |
bc3048e3 | 106 | init_waitqueue_head(&dqp->q_pinwait); |
1da177e4 | 107 | |
e1f49cf2 DC |
108 | /* |
109 | * Because we want to use a counting completion, complete | |
110 | * the flush completion once to allow a single access to | |
111 | * the flush completion without blocking. | |
112 | */ | |
113 | init_completion(&dqp->q_flush); | |
114 | complete(&dqp->q_flush); | |
115 | ||
0b1b213f | 116 | trace_xfs_dqinit(dqp); |
1da177e4 LT |
117 | } else { |
118 | /* | |
119 | * Only the q_core portion was zeroed in dqreclaim_one(). | |
120 | * So, we need to reset others. | |
121 | */ | |
3a8406f6 DC |
122 | dqp->q_nrefs = 0; |
123 | dqp->q_blkno = 0; | |
124 | INIT_LIST_HEAD(&dqp->q_mplist); | |
125 | INIT_LIST_HEAD(&dqp->q_hashlist); | |
126 | dqp->q_bufoffset = 0; | |
127 | dqp->q_fileoffset = 0; | |
128 | dqp->q_transp = NULL; | |
129 | dqp->q_gdquot = NULL; | |
130 | dqp->q_res_bcount = 0; | |
131 | dqp->q_res_icount = 0; | |
132 | dqp->q_res_rtbcount = 0; | |
133 | atomic_set(&dqp->q_pincount, 0); | |
134 | dqp->q_hash = NULL; | |
135 | ASSERT(list_empty(&dqp->q_freelist)); | |
1da177e4 | 136 | |
0b1b213f | 137 | trace_xfs_dqreuse(dqp); |
98b8c7a0 CH |
138 | } |
139 | ||
140 | /* | |
141 | * In either case we need to make sure group quotas have a different | |
142 | * lock class than user quotas, to make sure lockdep knows we can | |
143 | * locks of one of each at the same time. | |
144 | */ | |
145 | if (!(type & XFS_DQ_USER)) | |
146 | lockdep_set_class(&dqp->q_qlock, &xfs_dquot_other_class); | |
1da177e4 LT |
147 | |
148 | /* | |
149 | * log item gets initialized later | |
150 | */ | |
151 | return (dqp); | |
152 | } | |
153 | ||
154 | /* | |
155 | * This is called to free all the memory associated with a dquot | |
156 | */ | |
157 | void | |
158 | xfs_qm_dqdestroy( | |
159 | xfs_dquot_t *dqp) | |
160 | { | |
3a8406f6 | 161 | ASSERT(list_empty(&dqp->q_freelist)); |
1da177e4 LT |
162 | |
163 | mutex_destroy(&dqp->q_qlock); | |
1da177e4 | 164 | sv_destroy(&dqp->q_pinwait); |
1da177e4 | 165 | kmem_zone_free(xfs_Gqm->qm_dqzone, dqp); |
0b1b213f | 166 | |
1da177e4 LT |
167 | atomic_dec(&xfs_Gqm->qm_totaldquots); |
168 | } | |
169 | ||
170 | /* | |
171 | * This is what a 'fresh' dquot inside a dquot chunk looks like on disk. | |
172 | */ | |
173 | STATIC void | |
174 | xfs_qm_dqinit_core( | |
175 | xfs_dqid_t id, | |
176 | uint type, | |
177 | xfs_dqblk_t *d) | |
178 | { | |
179 | /* | |
180 | * Caller has zero'd the entire dquot 'chunk' already. | |
181 | */ | |
1149d96a CH |
182 | d->dd_diskdq.d_magic = cpu_to_be16(XFS_DQUOT_MAGIC); |
183 | d->dd_diskdq.d_version = XFS_DQUOT_VERSION; | |
184 | d->dd_diskdq.d_id = cpu_to_be32(id); | |
185 | d->dd_diskdq.d_flags = type; | |
1da177e4 LT |
186 | } |
187 | ||
1da177e4 LT |
188 | /* |
189 | * If default limits are in force, push them into the dquot now. | |
190 | * We overwrite the dquot limits only if they are zero and this | |
191 | * is not the root dquot. | |
192 | */ | |
193 | void | |
194 | xfs_qm_adjust_dqlimits( | |
195 | xfs_mount_t *mp, | |
196 | xfs_disk_dquot_t *d) | |
197 | { | |
198 | xfs_quotainfo_t *q = mp->m_quotainfo; | |
199 | ||
200 | ASSERT(d->d_id); | |
201 | ||
202 | if (q->qi_bsoftlimit && !d->d_blk_softlimit) | |
1149d96a | 203 | d->d_blk_softlimit = cpu_to_be64(q->qi_bsoftlimit); |
1da177e4 | 204 | if (q->qi_bhardlimit && !d->d_blk_hardlimit) |
1149d96a | 205 | d->d_blk_hardlimit = cpu_to_be64(q->qi_bhardlimit); |
1da177e4 | 206 | if (q->qi_isoftlimit && !d->d_ino_softlimit) |
1149d96a | 207 | d->d_ino_softlimit = cpu_to_be64(q->qi_isoftlimit); |
1da177e4 | 208 | if (q->qi_ihardlimit && !d->d_ino_hardlimit) |
1149d96a | 209 | d->d_ino_hardlimit = cpu_to_be64(q->qi_ihardlimit); |
1da177e4 | 210 | if (q->qi_rtbsoftlimit && !d->d_rtb_softlimit) |
1149d96a | 211 | d->d_rtb_softlimit = cpu_to_be64(q->qi_rtbsoftlimit); |
1da177e4 | 212 | if (q->qi_rtbhardlimit && !d->d_rtb_hardlimit) |
1149d96a | 213 | d->d_rtb_hardlimit = cpu_to_be64(q->qi_rtbhardlimit); |
1da177e4 LT |
214 | } |
215 | ||
216 | /* | |
217 | * Check the limits and timers of a dquot and start or reset timers | |
218 | * if necessary. | |
219 | * This gets called even when quota enforcement is OFF, which makes our | |
220 | * life a little less complicated. (We just don't reject any quota | |
221 | * reservations in that case, when enforcement is off). | |
222 | * We also return 0 as the values of the timers in Q_GETQUOTA calls, when | |
223 | * enforcement's off. | |
224 | * In contrast, warnings are a little different in that they don't | |
754002b4 NS |
225 | * 'automatically' get started when limits get exceeded. They do |
226 | * get reset to zero, however, when we find the count to be under | |
227 | * the soft limit (they are only ever set non-zero via userspace). | |
1da177e4 LT |
228 | */ |
229 | void | |
230 | xfs_qm_adjust_dqtimers( | |
231 | xfs_mount_t *mp, | |
232 | xfs_disk_dquot_t *d) | |
233 | { | |
234 | ASSERT(d->d_id); | |
235 | ||
236 | #ifdef QUOTADEBUG | |
1149d96a CH |
237 | if (d->d_blk_hardlimit) |
238 | ASSERT(be64_to_cpu(d->d_blk_softlimit) <= | |
239 | be64_to_cpu(d->d_blk_hardlimit)); | |
240 | if (d->d_ino_hardlimit) | |
241 | ASSERT(be64_to_cpu(d->d_ino_softlimit) <= | |
242 | be64_to_cpu(d->d_ino_hardlimit)); | |
243 | if (d->d_rtb_hardlimit) | |
244 | ASSERT(be64_to_cpu(d->d_rtb_softlimit) <= | |
245 | be64_to_cpu(d->d_rtb_hardlimit)); | |
1da177e4 LT |
246 | #endif |
247 | if (!d->d_btimer) { | |
1149d96a CH |
248 | if ((d->d_blk_softlimit && |
249 | (be64_to_cpu(d->d_bcount) >= | |
250 | be64_to_cpu(d->d_blk_softlimit))) || | |
251 | (d->d_blk_hardlimit && | |
252 | (be64_to_cpu(d->d_bcount) >= | |
253 | be64_to_cpu(d->d_blk_hardlimit)))) { | |
254 | d->d_btimer = cpu_to_be32(get_seconds() + | |
8a7b8a89 | 255 | mp->m_quotainfo->qi_btimelimit); |
754002b4 NS |
256 | } else { |
257 | d->d_bwarns = 0; | |
1da177e4 LT |
258 | } |
259 | } else { | |
260 | if ((!d->d_blk_softlimit || | |
1149d96a CH |
261 | (be64_to_cpu(d->d_bcount) < |
262 | be64_to_cpu(d->d_blk_softlimit))) && | |
1da177e4 | 263 | (!d->d_blk_hardlimit || |
1149d96a CH |
264 | (be64_to_cpu(d->d_bcount) < |
265 | be64_to_cpu(d->d_blk_hardlimit)))) { | |
1da177e4 LT |
266 | d->d_btimer = 0; |
267 | } | |
268 | } | |
269 | ||
270 | if (!d->d_itimer) { | |
1149d96a CH |
271 | if ((d->d_ino_softlimit && |
272 | (be64_to_cpu(d->d_icount) >= | |
273 | be64_to_cpu(d->d_ino_softlimit))) || | |
274 | (d->d_ino_hardlimit && | |
275 | (be64_to_cpu(d->d_icount) >= | |
276 | be64_to_cpu(d->d_ino_hardlimit)))) { | |
277 | d->d_itimer = cpu_to_be32(get_seconds() + | |
8a7b8a89 | 278 | mp->m_quotainfo->qi_itimelimit); |
754002b4 NS |
279 | } else { |
280 | d->d_iwarns = 0; | |
1da177e4 LT |
281 | } |
282 | } else { | |
283 | if ((!d->d_ino_softlimit || | |
1149d96a CH |
284 | (be64_to_cpu(d->d_icount) < |
285 | be64_to_cpu(d->d_ino_softlimit))) && | |
1da177e4 | 286 | (!d->d_ino_hardlimit || |
1149d96a CH |
287 | (be64_to_cpu(d->d_icount) < |
288 | be64_to_cpu(d->d_ino_hardlimit)))) { | |
1da177e4 LT |
289 | d->d_itimer = 0; |
290 | } | |
291 | } | |
292 | ||
293 | if (!d->d_rtbtimer) { | |
1149d96a CH |
294 | if ((d->d_rtb_softlimit && |
295 | (be64_to_cpu(d->d_rtbcount) >= | |
296 | be64_to_cpu(d->d_rtb_softlimit))) || | |
297 | (d->d_rtb_hardlimit && | |
298 | (be64_to_cpu(d->d_rtbcount) >= | |
299 | be64_to_cpu(d->d_rtb_hardlimit)))) { | |
300 | d->d_rtbtimer = cpu_to_be32(get_seconds() + | |
8a7b8a89 | 301 | mp->m_quotainfo->qi_rtbtimelimit); |
754002b4 NS |
302 | } else { |
303 | d->d_rtbwarns = 0; | |
1da177e4 LT |
304 | } |
305 | } else { | |
306 | if ((!d->d_rtb_softlimit || | |
1149d96a CH |
307 | (be64_to_cpu(d->d_rtbcount) < |
308 | be64_to_cpu(d->d_rtb_softlimit))) && | |
1da177e4 | 309 | (!d->d_rtb_hardlimit || |
1149d96a CH |
310 | (be64_to_cpu(d->d_rtbcount) < |
311 | be64_to_cpu(d->d_rtb_hardlimit)))) { | |
1da177e4 LT |
312 | d->d_rtbtimer = 0; |
313 | } | |
314 | } | |
315 | } | |
316 | ||
1da177e4 LT |
317 | /* |
318 | * initialize a buffer full of dquots and log the whole thing | |
319 | */ | |
320 | STATIC void | |
321 | xfs_qm_init_dquot_blk( | |
322 | xfs_trans_t *tp, | |
323 | xfs_mount_t *mp, | |
324 | xfs_dqid_t id, | |
325 | uint type, | |
326 | xfs_buf_t *bp) | |
327 | { | |
8a7b8a89 | 328 | struct xfs_quotainfo *q = mp->m_quotainfo; |
1da177e4 LT |
329 | xfs_dqblk_t *d; |
330 | int curid, i; | |
331 | ||
332 | ASSERT(tp); | |
333 | ASSERT(XFS_BUF_ISBUSY(bp)); | |
334 | ASSERT(XFS_BUF_VALUSEMA(bp) <= 0); | |
335 | ||
336 | d = (xfs_dqblk_t *)XFS_BUF_PTR(bp); | |
337 | ||
338 | /* | |
339 | * ID of the first dquot in the block - id's are zero based. | |
340 | */ | |
8a7b8a89 | 341 | curid = id - (id % q->qi_dqperchunk); |
1da177e4 | 342 | ASSERT(curid >= 0); |
8a7b8a89 CH |
343 | memset(d, 0, BBTOB(q->qi_dqchunklen)); |
344 | for (i = 0; i < q->qi_dqperchunk; i++, d++, curid++) | |
1da177e4 LT |
345 | xfs_qm_dqinit_core(curid, type, d); |
346 | xfs_trans_dquot_buf(tp, bp, | |
c8ad20ff NS |
347 | (type & XFS_DQ_USER ? XFS_BLI_UDQUOT_BUF : |
348 | ((type & XFS_DQ_PROJ) ? XFS_BLI_PDQUOT_BUF : | |
349 | XFS_BLI_GDQUOT_BUF))); | |
8a7b8a89 | 350 | xfs_trans_log_buf(tp, bp, 0, BBTOB(q->qi_dqchunklen) - 1); |
1da177e4 LT |
351 | } |
352 | ||
353 | ||
354 | ||
355 | /* | |
356 | * Allocate a block and fill it with dquots. | |
357 | * This is called when the bmapi finds a hole. | |
358 | */ | |
359 | STATIC int | |
360 | xfs_qm_dqalloc( | |
efa092f3 | 361 | xfs_trans_t **tpp, |
1da177e4 LT |
362 | xfs_mount_t *mp, |
363 | xfs_dquot_t *dqp, | |
364 | xfs_inode_t *quotip, | |
365 | xfs_fileoff_t offset_fsb, | |
366 | xfs_buf_t **O_bpp) | |
367 | { | |
368 | xfs_fsblock_t firstblock; | |
369 | xfs_bmap_free_t flist; | |
370 | xfs_bmbt_irec_t map; | |
371 | int nmaps, error, committed; | |
372 | xfs_buf_t *bp; | |
efa092f3 | 373 | xfs_trans_t *tp = *tpp; |
1da177e4 LT |
374 | |
375 | ASSERT(tp != NULL); | |
0b1b213f CH |
376 | |
377 | trace_xfs_dqalloc(dqp); | |
1da177e4 LT |
378 | |
379 | /* | |
380 | * Initialize the bmap freelist prior to calling bmapi code. | |
381 | */ | |
9d87c319 | 382 | xfs_bmap_init(&flist, &firstblock); |
1da177e4 LT |
383 | xfs_ilock(quotip, XFS_ILOCK_EXCL); |
384 | /* | |
385 | * Return if this type of quotas is turned off while we didn't | |
386 | * have an inode lock | |
387 | */ | |
388 | if (XFS_IS_THIS_QUOTA_OFF(dqp)) { | |
389 | xfs_iunlock(quotip, XFS_ILOCK_EXCL); | |
390 | return (ESRCH); | |
391 | } | |
392 | ||
393 | /* | |
394 | * xfs_trans_commit normally decrements the vnode ref count | |
395 | * when it unlocks the inode. Since we want to keep the quota | |
396 | * inode around, we bump the vnode ref count now. | |
397 | */ | |
0b1f9177 | 398 | IHOLD(quotip); |
1da177e4 LT |
399 | |
400 | xfs_trans_ijoin(tp, quotip, XFS_ILOCK_EXCL); | |
401 | nmaps = 1; | |
402 | if ((error = xfs_bmapi(tp, quotip, | |
403 | offset_fsb, XFS_DQUOT_CLUSTER_SIZE_FSB, | |
404 | XFS_BMAPI_METADATA | XFS_BMAPI_WRITE, | |
405 | &firstblock, | |
406 | XFS_QM_DQALLOC_SPACE_RES(mp), | |
3e57ecf6 | 407 | &map, &nmaps, &flist, NULL))) { |
1da177e4 LT |
408 | goto error0; |
409 | } | |
410 | ASSERT(map.br_blockcount == XFS_DQUOT_CLUSTER_SIZE_FSB); | |
411 | ASSERT(nmaps == 1); | |
412 | ASSERT((map.br_startblock != DELAYSTARTBLOCK) && | |
413 | (map.br_startblock != HOLESTARTBLOCK)); | |
414 | ||
415 | /* | |
416 | * Keep track of the blkno to save a lookup later | |
417 | */ | |
418 | dqp->q_blkno = XFS_FSB_TO_DADDR(mp, map.br_startblock); | |
419 | ||
420 | /* now we can just get the buffer (there's nothing to read yet) */ | |
421 | bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, | |
422 | dqp->q_blkno, | |
8a7b8a89 | 423 | mp->m_quotainfo->qi_dqchunklen, |
1da177e4 LT |
424 | 0); |
425 | if (!bp || (error = XFS_BUF_GETERROR(bp))) | |
426 | goto error1; | |
427 | /* | |
428 | * Make a chunk of dquots out of this buffer and log | |
429 | * the entire thing. | |
430 | */ | |
1149d96a | 431 | xfs_qm_init_dquot_blk(tp, mp, be32_to_cpu(dqp->q_core.d_id), |
c8ad20ff | 432 | dqp->dq_flags & XFS_DQ_ALLTYPES, bp); |
1da177e4 | 433 | |
efa092f3 TS |
434 | /* |
435 | * xfs_bmap_finish() may commit the current transaction and | |
436 | * start a second transaction if the freelist is not empty. | |
437 | * | |
438 | * Since we still want to modify this buffer, we need to | |
439 | * ensure that the buffer is not released on commit of | |
440 | * the first transaction and ensure the buffer is added to the | |
441 | * second transaction. | |
442 | * | |
443 | * If there is only one transaction then don't stop the buffer | |
444 | * from being released when it commits later on. | |
445 | */ | |
446 | ||
447 | xfs_trans_bhold(tp, bp); | |
448 | ||
f7c99b6f | 449 | if ((error = xfs_bmap_finish(tpp, &flist, &committed))) { |
1da177e4 LT |
450 | goto error1; |
451 | } | |
452 | ||
efa092f3 TS |
453 | if (committed) { |
454 | tp = *tpp; | |
455 | xfs_trans_bjoin(tp, bp); | |
456 | } else { | |
457 | xfs_trans_bhold_release(tp, bp); | |
458 | } | |
459 | ||
1da177e4 LT |
460 | *O_bpp = bp; |
461 | return 0; | |
462 | ||
463 | error1: | |
464 | xfs_bmap_cancel(&flist); | |
465 | error0: | |
466 | xfs_iunlock(quotip, XFS_ILOCK_EXCL); | |
467 | ||
468 | return (error); | |
469 | } | |
470 | ||
471 | /* | |
472 | * Maps a dquot to the buffer containing its on-disk version. | |
473 | * This returns a ptr to the buffer containing the on-disk dquot | |
474 | * in the bpp param, and a ptr to the on-disk dquot within that buffer | |
475 | */ | |
476 | STATIC int | |
477 | xfs_qm_dqtobp( | |
efa092f3 | 478 | xfs_trans_t **tpp, |
1da177e4 LT |
479 | xfs_dquot_t *dqp, |
480 | xfs_disk_dquot_t **O_ddpp, | |
481 | xfs_buf_t **O_bpp, | |
482 | uint flags) | |
483 | { | |
484 | xfs_bmbt_irec_t map; | |
485 | int nmaps, error; | |
486 | xfs_buf_t *bp; | |
487 | xfs_inode_t *quotip; | |
488 | xfs_mount_t *mp; | |
489 | xfs_disk_dquot_t *ddq; | |
490 | xfs_dqid_t id; | |
491 | boolean_t newdquot; | |
efa092f3 | 492 | xfs_trans_t *tp = (tpp ? *tpp : NULL); |
1da177e4 LT |
493 | |
494 | mp = dqp->q_mount; | |
1149d96a | 495 | id = be32_to_cpu(dqp->q_core.d_id); |
1da177e4 LT |
496 | nmaps = 1; |
497 | newdquot = B_FALSE; | |
498 | ||
499 | /* | |
500 | * If we don't know where the dquot lives, find out. | |
501 | */ | |
502 | if (dqp->q_blkno == (xfs_daddr_t) 0) { | |
503 | /* We use the id as an index */ | |
8a7b8a89 CH |
504 | dqp->q_fileoffset = (xfs_fileoff_t)id / |
505 | mp->m_quotainfo->qi_dqperchunk; | |
1da177e4 LT |
506 | nmaps = 1; |
507 | quotip = XFS_DQ_TO_QIP(dqp); | |
508 | xfs_ilock(quotip, XFS_ILOCK_SHARED); | |
509 | /* | |
510 | * Return if this type of quotas is turned off while we didn't | |
511 | * have an inode lock | |
512 | */ | |
513 | if (XFS_IS_THIS_QUOTA_OFF(dqp)) { | |
514 | xfs_iunlock(quotip, XFS_ILOCK_SHARED); | |
515 | return (ESRCH); | |
516 | } | |
517 | /* | |
518 | * Find the block map; no allocations yet | |
519 | */ | |
520 | error = xfs_bmapi(NULL, quotip, dqp->q_fileoffset, | |
521 | XFS_DQUOT_CLUSTER_SIZE_FSB, | |
522 | XFS_BMAPI_METADATA, | |
3e57ecf6 | 523 | NULL, 0, &map, &nmaps, NULL, NULL); |
1da177e4 LT |
524 | |
525 | xfs_iunlock(quotip, XFS_ILOCK_SHARED); | |
526 | if (error) | |
527 | return (error); | |
528 | ASSERT(nmaps == 1); | |
529 | ASSERT(map.br_blockcount == 1); | |
530 | ||
531 | /* | |
532 | * offset of dquot in the (fixed sized) dquot chunk. | |
533 | */ | |
8a7b8a89 | 534 | dqp->q_bufoffset = (id % mp->m_quotainfo->qi_dqperchunk) * |
1da177e4 LT |
535 | sizeof(xfs_dqblk_t); |
536 | if (map.br_startblock == HOLESTARTBLOCK) { | |
537 | /* | |
538 | * We don't allocate unless we're asked to | |
539 | */ | |
540 | if (!(flags & XFS_QMOPT_DQALLOC)) | |
541 | return (ENOENT); | |
542 | ||
543 | ASSERT(tp); | |
efa092f3 | 544 | if ((error = xfs_qm_dqalloc(tpp, mp, dqp, quotip, |
1da177e4 LT |
545 | dqp->q_fileoffset, &bp))) |
546 | return (error); | |
efa092f3 | 547 | tp = *tpp; |
1da177e4 LT |
548 | newdquot = B_TRUE; |
549 | } else { | |
550 | /* | |
551 | * store the blkno etc so that we don't have to do the | |
552 | * mapping all the time | |
553 | */ | |
554 | dqp->q_blkno = XFS_FSB_TO_DADDR(mp, map.br_startblock); | |
555 | } | |
556 | } | |
557 | ASSERT(dqp->q_blkno != DELAYSTARTBLOCK); | |
558 | ASSERT(dqp->q_blkno != HOLESTARTBLOCK); | |
559 | ||
560 | /* | |
561 | * Read in the buffer, unless we've just done the allocation | |
562 | * (in which case we already have the buf). | |
563 | */ | |
8a7b8a89 | 564 | if (!newdquot) { |
0b1b213f CH |
565 | trace_xfs_dqtobp_read(dqp); |
566 | ||
8a7b8a89 CH |
567 | error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, |
568 | dqp->q_blkno, | |
569 | mp->m_quotainfo->qi_dqchunklen, | |
570 | 0, &bp); | |
1da177e4 LT |
571 | if (error || !bp) |
572 | return XFS_ERROR(error); | |
573 | } | |
574 | ASSERT(XFS_BUF_ISBUSY(bp)); | |
575 | ASSERT(XFS_BUF_VALUSEMA(bp) <= 0); | |
576 | ||
577 | /* | |
578 | * calculate the location of the dquot inside the buffer. | |
579 | */ | |
580 | ddq = (xfs_disk_dquot_t *)((char *)XFS_BUF_PTR(bp) + dqp->q_bufoffset); | |
581 | ||
582 | /* | |
583 | * A simple sanity check in case we got a corrupted dquot... | |
584 | */ | |
c8ad20ff | 585 | if (xfs_qm_dqcheck(ddq, id, dqp->dq_flags & XFS_DQ_ALLTYPES, |
1da177e4 LT |
586 | flags & (XFS_QMOPT_DQREPAIR|XFS_QMOPT_DOWARN), |
587 | "dqtobp")) { | |
588 | if (!(flags & XFS_QMOPT_DQREPAIR)) { | |
589 | xfs_trans_brelse(tp, bp); | |
590 | return XFS_ERROR(EIO); | |
591 | } | |
592 | XFS_BUF_BUSY(bp); /* We dirtied this */ | |
593 | } | |
594 | ||
595 | *O_bpp = bp; | |
596 | *O_ddpp = ddq; | |
597 | ||
598 | return (0); | |
599 | } | |
600 | ||
601 | ||
602 | /* | |
603 | * Read in the ondisk dquot using dqtobp() then copy it to an incore version, | |
604 | * and release the buffer immediately. | |
605 | * | |
606 | */ | |
607 | /* ARGSUSED */ | |
608 | STATIC int | |
609 | xfs_qm_dqread( | |
efa092f3 | 610 | xfs_trans_t **tpp, |
1da177e4 LT |
611 | xfs_dqid_t id, |
612 | xfs_dquot_t *dqp, /* dquot to get filled in */ | |
613 | uint flags) | |
614 | { | |
615 | xfs_disk_dquot_t *ddqp; | |
616 | xfs_buf_t *bp; | |
617 | int error; | |
efa092f3 TS |
618 | xfs_trans_t *tp; |
619 | ||
620 | ASSERT(tpp); | |
1da177e4 | 621 | |
0b1b213f CH |
622 | trace_xfs_dqread(dqp); |
623 | ||
1da177e4 LT |
624 | /* |
625 | * get a pointer to the on-disk dquot and the buffer containing it | |
626 | * dqp already knows its own type (GROUP/USER). | |
627 | */ | |
efa092f3 | 628 | if ((error = xfs_qm_dqtobp(tpp, dqp, &ddqp, &bp, flags))) { |
1da177e4 LT |
629 | return (error); |
630 | } | |
efa092f3 | 631 | tp = *tpp; |
1da177e4 LT |
632 | |
633 | /* copy everything from disk dquot to the incore dquot */ | |
634 | memcpy(&dqp->q_core, ddqp, sizeof(xfs_disk_dquot_t)); | |
1149d96a | 635 | ASSERT(be32_to_cpu(dqp->q_core.d_id) == id); |
1da177e4 LT |
636 | xfs_qm_dquot_logitem_init(dqp); |
637 | ||
638 | /* | |
639 | * Reservation counters are defined as reservation plus current usage | |
640 | * to avoid having to add everytime. | |
641 | */ | |
1149d96a CH |
642 | dqp->q_res_bcount = be64_to_cpu(ddqp->d_bcount); |
643 | dqp->q_res_icount = be64_to_cpu(ddqp->d_icount); | |
644 | dqp->q_res_rtbcount = be64_to_cpu(ddqp->d_rtbcount); | |
1da177e4 LT |
645 | |
646 | /* Mark the buf so that this will stay incore a little longer */ | |
647 | XFS_BUF_SET_VTYPE_REF(bp, B_FS_DQUOT, XFS_DQUOT_REF); | |
648 | ||
649 | /* | |
650 | * We got the buffer with a xfs_trans_read_buf() (in dqtobp()) | |
651 | * So we need to release with xfs_trans_brelse(). | |
652 | * The strategy here is identical to that of inodes; we lock | |
653 | * the dquot in xfs_qm_dqget() before making it accessible to | |
654 | * others. This is because dquots, like inodes, need a good level of | |
655 | * concurrency, and we don't want to take locks on the entire buffers | |
656 | * for dquot accesses. | |
657 | * Note also that the dquot buffer may even be dirty at this point, if | |
658 | * this particular dquot was repaired. We still aren't afraid to | |
659 | * brelse it because we have the changes incore. | |
660 | */ | |
661 | ASSERT(XFS_BUF_ISBUSY(bp)); | |
662 | ASSERT(XFS_BUF_VALUSEMA(bp) <= 0); | |
663 | xfs_trans_brelse(tp, bp); | |
664 | ||
665 | return (error); | |
666 | } | |
667 | ||
668 | ||
669 | /* | |
670 | * allocate an incore dquot from the kernel heap, | |
671 | * and fill its core with quota information kept on disk. | |
672 | * If XFS_QMOPT_DQALLOC is set, it'll allocate a dquot on disk | |
673 | * if it wasn't already allocated. | |
674 | */ | |
675 | STATIC int | |
676 | xfs_qm_idtodq( | |
677 | xfs_mount_t *mp, | |
678 | xfs_dqid_t id, /* gid or uid, depending on type */ | |
679 | uint type, /* UDQUOT or GDQUOT */ | |
680 | uint flags, /* DQALLOC, DQREPAIR */ | |
681 | xfs_dquot_t **O_dqpp)/* OUT : incore dquot, not locked */ | |
682 | { | |
683 | xfs_dquot_t *dqp; | |
684 | int error; | |
685 | xfs_trans_t *tp; | |
686 | int cancelflags=0; | |
687 | ||
688 | dqp = xfs_qm_dqinit(mp, id, type); | |
689 | tp = NULL; | |
690 | if (flags & XFS_QMOPT_DQALLOC) { | |
691 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_DQALLOC); | |
8a7b8a89 CH |
692 | error = xfs_trans_reserve(tp, XFS_QM_DQALLOC_SPACE_RES(mp), |
693 | XFS_WRITE_LOG_RES(mp) + | |
694 | BBTOB(mp->m_quotainfo->qi_dqchunklen) - 1 + | |
695 | 128, | |
696 | 0, | |
697 | XFS_TRANS_PERM_LOG_RES, | |
698 | XFS_WRITE_LOG_COUNT); | |
699 | if (error) { | |
1da177e4 LT |
700 | cancelflags = 0; |
701 | goto error0; | |
702 | } | |
703 | cancelflags = XFS_TRANS_RELEASE_LOG_RES; | |
704 | } | |
705 | ||
706 | /* | |
707 | * Read it from disk; xfs_dqread() takes care of | |
708 | * all the necessary initialization of dquot's fields (locks, etc) | |
709 | */ | |
efa092f3 | 710 | if ((error = xfs_qm_dqread(&tp, id, dqp, flags))) { |
1da177e4 LT |
711 | /* |
712 | * This can happen if quotas got turned off (ESRCH), | |
713 | * or if the dquot didn't exist on disk and we ask to | |
714 | * allocate (ENOENT). | |
715 | */ | |
0b1b213f | 716 | trace_xfs_dqread_fail(dqp); |
1da177e4 LT |
717 | cancelflags |= XFS_TRANS_ABORT; |
718 | goto error0; | |
719 | } | |
720 | if (tp) { | |
1c72bf90 | 721 | if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) |
1da177e4 LT |
722 | goto error1; |
723 | } | |
724 | ||
725 | *O_dqpp = dqp; | |
726 | return (0); | |
727 | ||
728 | error0: | |
729 | ASSERT(error); | |
730 | if (tp) | |
731 | xfs_trans_cancel(tp, cancelflags); | |
732 | error1: | |
733 | xfs_qm_dqdestroy(dqp); | |
734 | *O_dqpp = NULL; | |
735 | return (error); | |
736 | } | |
737 | ||
738 | /* | |
739 | * Lookup a dquot in the incore dquot hashtable. We keep two separate | |
740 | * hashtables for user and group dquots; and, these are global tables | |
741 | * inside the XQM, not per-filesystem tables. | |
742 | * The hash chain must be locked by caller, and it is left locked | |
743 | * on return. Returning dquot is locked. | |
744 | */ | |
745 | STATIC int | |
746 | xfs_qm_dqlookup( | |
747 | xfs_mount_t *mp, | |
748 | xfs_dqid_t id, | |
749 | xfs_dqhash_t *qh, | |
750 | xfs_dquot_t **O_dqpp) | |
751 | { | |
752 | xfs_dquot_t *dqp; | |
753 | uint flist_locked; | |
1da177e4 | 754 | |
c9a192dc | 755 | ASSERT(mutex_is_locked(&qh->qh_lock)); |
1da177e4 LT |
756 | |
757 | flist_locked = B_FALSE; | |
758 | ||
759 | /* | |
760 | * Traverse the hashchain looking for a match | |
761 | */ | |
e6a81f13 | 762 | list_for_each_entry(dqp, &qh->qh_list, q_hashlist) { |
1da177e4 LT |
763 | /* |
764 | * We already have the hashlock. We don't need the | |
765 | * dqlock to look at the id field of the dquot, since the | |
766 | * id can't be modified without the hashlock anyway. | |
767 | */ | |
1149d96a | 768 | if (be32_to_cpu(dqp->q_core.d_id) == id && dqp->q_mount == mp) { |
0b1b213f CH |
769 | trace_xfs_dqlookup_found(dqp); |
770 | ||
1da177e4 LT |
771 | /* |
772 | * All in core dquots must be on the dqlist of mp | |
773 | */ | |
3a25404b | 774 | ASSERT(!list_empty(&dqp->q_mplist)); |
1da177e4 LT |
775 | |
776 | xfs_dqlock(dqp); | |
777 | if (dqp->q_nrefs == 0) { | |
3a8406f6 DC |
778 | ASSERT(!list_empty(&dqp->q_freelist)); |
779 | if (!mutex_trylock(&xfs_Gqm->qm_dqfrlist_lock)) { | |
0b1b213f | 780 | trace_xfs_dqlookup_want(dqp); |
1da177e4 LT |
781 | |
782 | /* | |
783 | * We may have raced with dqreclaim_one() | |
784 | * (and lost). So, flag that we don't | |
785 | * want the dquot to be reclaimed. | |
786 | */ | |
787 | dqp->dq_flags |= XFS_DQ_WANT; | |
788 | xfs_dqunlock(dqp); | |
3a8406f6 | 789 | mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 LT |
790 | xfs_dqlock(dqp); |
791 | dqp->dq_flags &= ~(XFS_DQ_WANT); | |
792 | } | |
793 | flist_locked = B_TRUE; | |
794 | } | |
795 | ||
796 | /* | |
797 | * id couldn't have changed; we had the hashlock all | |
798 | * along | |
799 | */ | |
1149d96a | 800 | ASSERT(be32_to_cpu(dqp->q_core.d_id) == id); |
1da177e4 LT |
801 | |
802 | if (flist_locked) { | |
803 | if (dqp->q_nrefs != 0) { | |
3a8406f6 | 804 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 LT |
805 | flist_locked = B_FALSE; |
806 | } else { | |
3a8406f6 | 807 | /* take it off the freelist */ |
0b1b213f | 808 | trace_xfs_dqlookup_freelist(dqp); |
3a8406f6 DC |
809 | list_del_init(&dqp->q_freelist); |
810 | xfs_Gqm->qm_dqfrlist_cnt--; | |
1da177e4 LT |
811 | } |
812 | } | |
813 | ||
1da177e4 LT |
814 | XFS_DQHOLD(dqp); |
815 | ||
816 | if (flist_locked) | |
3a8406f6 | 817 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 LT |
818 | /* |
819 | * move the dquot to the front of the hashchain | |
820 | */ | |
c9a192dc | 821 | ASSERT(mutex_is_locked(&qh->qh_lock)); |
e6a81f13 | 822 | list_move(&dqp->q_hashlist, &qh->qh_list); |
0b1b213f | 823 | trace_xfs_dqlookup_done(dqp); |
1da177e4 | 824 | *O_dqpp = dqp; |
e6a81f13 | 825 | return 0; |
1da177e4 LT |
826 | } |
827 | } | |
828 | ||
829 | *O_dqpp = NULL; | |
c9a192dc | 830 | ASSERT(mutex_is_locked(&qh->qh_lock)); |
1da177e4 LT |
831 | return (1); |
832 | } | |
833 | ||
834 | /* | |
835 | * Given the file system, inode OR id, and type (UDQUOT/GDQUOT), return a | |
836 | * a locked dquot, doing an allocation (if requested) as needed. | |
837 | * When both an inode and an id are given, the inode's id takes precedence. | |
838 | * That is, if the id changes while we don't hold the ilock inside this | |
839 | * function, the new dquot is returned, not necessarily the one requested | |
840 | * in the id argument. | |
841 | */ | |
842 | int | |
843 | xfs_qm_dqget( | |
844 | xfs_mount_t *mp, | |
845 | xfs_inode_t *ip, /* locked inode (optional) */ | |
c8ad20ff NS |
846 | xfs_dqid_t id, /* uid/projid/gid depending on type */ |
847 | uint type, /* XFS_DQ_USER/XFS_DQ_PROJ/XFS_DQ_GROUP */ | |
1da177e4 LT |
848 | uint flags, /* DQALLOC, DQSUSER, DQREPAIR, DOWARN */ |
849 | xfs_dquot_t **O_dqpp) /* OUT : locked incore dquot */ | |
850 | { | |
851 | xfs_dquot_t *dqp; | |
852 | xfs_dqhash_t *h; | |
853 | uint version; | |
854 | int error; | |
855 | ||
856 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
857 | if ((! XFS_IS_UQUOTA_ON(mp) && type == XFS_DQ_USER) || | |
c8ad20ff | 858 | (! XFS_IS_PQUOTA_ON(mp) && type == XFS_DQ_PROJ) || |
1da177e4 LT |
859 | (! XFS_IS_GQUOTA_ON(mp) && type == XFS_DQ_GROUP)) { |
860 | return (ESRCH); | |
861 | } | |
862 | h = XFS_DQ_HASH(mp, id, type); | |
863 | ||
864 | #ifdef DEBUG | |
865 | if (xfs_do_dqerror) { | |
866 | if ((xfs_dqerror_target == mp->m_ddev_targp) && | |
867 | (xfs_dqreq_num++ % xfs_dqerror_mod) == 0) { | |
868 | cmn_err(CE_DEBUG, "Returning error in dqget"); | |
869 | return (EIO); | |
870 | } | |
871 | } | |
872 | #endif | |
873 | ||
874 | again: | |
875 | ||
876 | #ifdef DEBUG | |
c8ad20ff NS |
877 | ASSERT(type == XFS_DQ_USER || |
878 | type == XFS_DQ_PROJ || | |
879 | type == XFS_DQ_GROUP); | |
1da177e4 | 880 | if (ip) { |
579aa9ca | 881 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
882 | if (type == XFS_DQ_USER) |
883 | ASSERT(ip->i_udquot == NULL); | |
884 | else | |
885 | ASSERT(ip->i_gdquot == NULL); | |
886 | } | |
887 | #endif | |
c9a192dc | 888 | mutex_lock(&h->qh_lock); |
1da177e4 LT |
889 | |
890 | /* | |
891 | * Look in the cache (hashtable). | |
892 | * The chain is kept locked during lookup. | |
893 | */ | |
894 | if (xfs_qm_dqlookup(mp, id, h, O_dqpp) == 0) { | |
895 | XQM_STATS_INC(xqmstats.xs_qm_dqcachehits); | |
896 | /* | |
897 | * The dquot was found, moved to the front of the chain, | |
898 | * taken off the freelist if it was on it, and locked | |
899 | * at this point. Just unlock the hashchain and return. | |
900 | */ | |
901 | ASSERT(*O_dqpp); | |
902 | ASSERT(XFS_DQ_IS_LOCKED(*O_dqpp)); | |
c9a192dc | 903 | mutex_unlock(&h->qh_lock); |
0b1b213f | 904 | trace_xfs_dqget_hit(*O_dqpp); |
1da177e4 LT |
905 | return (0); /* success */ |
906 | } | |
907 | XQM_STATS_INC(xqmstats.xs_qm_dqcachemisses); | |
908 | ||
909 | /* | |
910 | * Dquot cache miss. We don't want to keep the inode lock across | |
911 | * a (potential) disk read. Also we don't want to deal with the lock | |
912 | * ordering between quotainode and this inode. OTOH, dropping the inode | |
913 | * lock here means dealing with a chown that can happen before | |
914 | * we re-acquire the lock. | |
915 | */ | |
916 | if (ip) | |
917 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
918 | /* | |
919 | * Save the hashchain version stamp, and unlock the chain, so that | |
920 | * we don't keep the lock across a disk read | |
921 | */ | |
922 | version = h->qh_version; | |
c9a192dc | 923 | mutex_unlock(&h->qh_lock); |
1da177e4 LT |
924 | |
925 | /* | |
926 | * Allocate the dquot on the kernel heap, and read the ondisk | |
927 | * portion off the disk. Also, do all the necessary initialization | |
928 | * This can return ENOENT if dquot didn't exist on disk and we didn't | |
929 | * ask it to allocate; ESRCH if quotas got turned off suddenly. | |
930 | */ | |
931 | if ((error = xfs_qm_idtodq(mp, id, type, | |
932 | flags & (XFS_QMOPT_DQALLOC|XFS_QMOPT_DQREPAIR| | |
933 | XFS_QMOPT_DOWARN), | |
934 | &dqp))) { | |
935 | if (ip) | |
936 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
937 | return (error); | |
938 | } | |
939 | ||
940 | /* | |
941 | * See if this is mount code calling to look at the overall quota limits | |
942 | * which are stored in the id == 0 user or group's dquot. | |
943 | * Since we may not have done a quotacheck by this point, just return | |
944 | * the dquot without attaching it to any hashtables, lists, etc, or even | |
945 | * taking a reference. | |
946 | * The caller must dqdestroy this once done. | |
947 | */ | |
948 | if (flags & XFS_QMOPT_DQSUSER) { | |
949 | ASSERT(id == 0); | |
950 | ASSERT(! ip); | |
951 | goto dqret; | |
952 | } | |
953 | ||
954 | /* | |
955 | * Dquot lock comes after hashlock in the lock ordering | |
956 | */ | |
957 | if (ip) { | |
958 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
191f8488 | 959 | |
1da177e4 LT |
960 | /* |
961 | * A dquot could be attached to this inode by now, since | |
962 | * we had dropped the ilock. | |
963 | */ | |
964 | if (type == XFS_DQ_USER) { | |
191f8488 CH |
965 | if (!XFS_IS_UQUOTA_ON(mp)) { |
966 | /* inode stays locked on return */ | |
967 | xfs_qm_dqdestroy(dqp); | |
968 | return XFS_ERROR(ESRCH); | |
969 | } | |
1da177e4 LT |
970 | if (ip->i_udquot) { |
971 | xfs_qm_dqdestroy(dqp); | |
972 | dqp = ip->i_udquot; | |
973 | xfs_dqlock(dqp); | |
974 | goto dqret; | |
975 | } | |
976 | } else { | |
191f8488 CH |
977 | if (!XFS_IS_OQUOTA_ON(mp)) { |
978 | /* inode stays locked on return */ | |
979 | xfs_qm_dqdestroy(dqp); | |
980 | return XFS_ERROR(ESRCH); | |
981 | } | |
1da177e4 LT |
982 | if (ip->i_gdquot) { |
983 | xfs_qm_dqdestroy(dqp); | |
984 | dqp = ip->i_gdquot; | |
985 | xfs_dqlock(dqp); | |
986 | goto dqret; | |
987 | } | |
988 | } | |
989 | } | |
990 | ||
991 | /* | |
992 | * Hashlock comes after ilock in lock order | |
993 | */ | |
c9a192dc | 994 | mutex_lock(&h->qh_lock); |
1da177e4 LT |
995 | if (version != h->qh_version) { |
996 | xfs_dquot_t *tmpdqp; | |
997 | /* | |
998 | * Now, see if somebody else put the dquot in the | |
999 | * hashtable before us. This can happen because we didn't | |
1000 | * keep the hashchain lock. We don't have to worry about | |
1001 | * lock order between the two dquots here since dqp isn't | |
1002 | * on any findable lists yet. | |
1003 | */ | |
1004 | if (xfs_qm_dqlookup(mp, id, h, &tmpdqp) == 0) { | |
1005 | /* | |
1006 | * Duplicate found. Just throw away the new dquot | |
1007 | * and start over. | |
1008 | */ | |
1009 | xfs_qm_dqput(tmpdqp); | |
c9a192dc | 1010 | mutex_unlock(&h->qh_lock); |
1da177e4 LT |
1011 | xfs_qm_dqdestroy(dqp); |
1012 | XQM_STATS_INC(xqmstats.xs_qm_dquot_dups); | |
1013 | goto again; | |
1014 | } | |
1015 | } | |
1016 | ||
1017 | /* | |
1018 | * Put the dquot at the beginning of the hash-chain and mp's list | |
1019 | * LOCK ORDER: hashlock, freelistlock, mplistlock, udqlock, gdqlock .. | |
1020 | */ | |
c9a192dc | 1021 | ASSERT(mutex_is_locked(&h->qh_lock)); |
1da177e4 | 1022 | dqp->q_hash = h; |
e6a81f13 DC |
1023 | list_add(&dqp->q_hashlist, &h->qh_list); |
1024 | h->qh_version++; | |
1da177e4 LT |
1025 | |
1026 | /* | |
1027 | * Attach this dquot to this filesystem's list of all dquots, | |
1028 | * kept inside the mount structure in m_quotainfo field | |
1029 | */ | |
3a25404b | 1030 | mutex_lock(&mp->m_quotainfo->qi_dqlist_lock); |
1da177e4 LT |
1031 | |
1032 | /* | |
1033 | * We return a locked dquot to the caller, with a reference taken | |
1034 | */ | |
1035 | xfs_dqlock(dqp); | |
1036 | dqp->q_nrefs = 1; | |
1037 | ||
3a25404b DC |
1038 | list_add(&dqp->q_mplist, &mp->m_quotainfo->qi_dqlist); |
1039 | mp->m_quotainfo->qi_dquots++; | |
1040 | mutex_unlock(&mp->m_quotainfo->qi_dqlist_lock); | |
c9a192dc | 1041 | mutex_unlock(&h->qh_lock); |
1da177e4 | 1042 | dqret: |
579aa9ca | 1043 | ASSERT((ip == NULL) || xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
0b1b213f | 1044 | trace_xfs_dqget_miss(dqp); |
1da177e4 LT |
1045 | *O_dqpp = dqp; |
1046 | return (0); | |
1047 | } | |
1048 | ||
1049 | ||
1050 | /* | |
1051 | * Release a reference to the dquot (decrement ref-count) | |
1052 | * and unlock it. If there is a group quota attached to this | |
1053 | * dquot, carefully release that too without tripping over | |
1054 | * deadlocks'n'stuff. | |
1055 | */ | |
1056 | void | |
1057 | xfs_qm_dqput( | |
1058 | xfs_dquot_t *dqp) | |
1059 | { | |
1060 | xfs_dquot_t *gdqp; | |
1061 | ||
1062 | ASSERT(dqp->q_nrefs > 0); | |
1063 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
0b1b213f CH |
1064 | |
1065 | trace_xfs_dqput(dqp); | |
1da177e4 LT |
1066 | |
1067 | if (dqp->q_nrefs != 1) { | |
1068 | dqp->q_nrefs--; | |
1069 | xfs_dqunlock(dqp); | |
1070 | return; | |
1071 | } | |
1072 | ||
1073 | /* | |
1074 | * drop the dqlock and acquire the freelist and dqlock | |
1075 | * in the right order; but try to get it out-of-order first | |
1076 | */ | |
3a8406f6 | 1077 | if (!mutex_trylock(&xfs_Gqm->qm_dqfrlist_lock)) { |
0b1b213f | 1078 | trace_xfs_dqput_wait(dqp); |
1da177e4 | 1079 | xfs_dqunlock(dqp); |
3a8406f6 | 1080 | mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 LT |
1081 | xfs_dqlock(dqp); |
1082 | } | |
1083 | ||
1084 | while (1) { | |
1085 | gdqp = NULL; | |
1086 | ||
1087 | /* We can't depend on nrefs being == 1 here */ | |
1088 | if (--dqp->q_nrefs == 0) { | |
0b1b213f CH |
1089 | trace_xfs_dqput_free(dqp); |
1090 | ||
3a8406f6 DC |
1091 | list_add_tail(&dqp->q_freelist, &xfs_Gqm->qm_dqfrlist); |
1092 | xfs_Gqm->qm_dqfrlist_cnt++; | |
1da177e4 LT |
1093 | |
1094 | /* | |
1095 | * If we just added a udquot to the freelist, then | |
1096 | * we want to release the gdquot reference that | |
1097 | * it (probably) has. Otherwise it'll keep the | |
1098 | * gdquot from getting reclaimed. | |
1099 | */ | |
1100 | if ((gdqp = dqp->q_gdquot)) { | |
1101 | /* | |
1102 | * Avoid a recursive dqput call | |
1103 | */ | |
1104 | xfs_dqlock(gdqp); | |
1105 | dqp->q_gdquot = NULL; | |
1106 | } | |
1da177e4 LT |
1107 | } |
1108 | xfs_dqunlock(dqp); | |
1109 | ||
1110 | /* | |
1111 | * If we had a group quota inside the user quota as a hint, | |
1112 | * release it now. | |
1113 | */ | |
1114 | if (! gdqp) | |
1115 | break; | |
1116 | dqp = gdqp; | |
1117 | } | |
3a8406f6 | 1118 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
1da177e4 LT |
1119 | } |
1120 | ||
1121 | /* | |
1122 | * Release a dquot. Flush it if dirty, then dqput() it. | |
1123 | * dquot must not be locked. | |
1124 | */ | |
1125 | void | |
1126 | xfs_qm_dqrele( | |
1127 | xfs_dquot_t *dqp) | |
1128 | { | |
7d095257 CH |
1129 | if (!dqp) |
1130 | return; | |
1131 | ||
0b1b213f | 1132 | trace_xfs_dqrele(dqp); |
1da177e4 LT |
1133 | |
1134 | xfs_dqlock(dqp); | |
1135 | /* | |
1136 | * We don't care to flush it if the dquot is dirty here. | |
1137 | * That will create stutters that we want to avoid. | |
1138 | * Instead we do a delayed write when we try to reclaim | |
1139 | * a dirty dquot. Also xfs_sync will take part of the burden... | |
1140 | */ | |
1141 | xfs_qm_dqput(dqp); | |
1142 | } | |
1143 | ||
1144 | ||
1145 | /* | |
1146 | * Write a modified dquot to disk. | |
1147 | * The dquot must be locked and the flush lock too taken by caller. | |
1148 | * The flush lock will not be unlocked until the dquot reaches the disk, | |
1149 | * but the dquot is free to be unlocked and modified by the caller | |
1150 | * in the interim. Dquot is still locked on return. This behavior is | |
1151 | * identical to that of inodes. | |
1152 | */ | |
1153 | int | |
1154 | xfs_qm_dqflush( | |
1155 | xfs_dquot_t *dqp, | |
1156 | uint flags) | |
1157 | { | |
1158 | xfs_mount_t *mp; | |
1159 | xfs_buf_t *bp; | |
1160 | xfs_disk_dquot_t *ddqp; | |
1161 | int error; | |
1da177e4 LT |
1162 | |
1163 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
e1f49cf2 | 1164 | ASSERT(!completion_done(&dqp->q_flush)); |
0b1b213f | 1165 | trace_xfs_dqflush(dqp); |
1da177e4 LT |
1166 | |
1167 | /* | |
2f8a3ce1 DC |
1168 | * If not dirty, or it's pinned and we are not supposed to |
1169 | * block, nada. | |
1da177e4 | 1170 | */ |
2f8a3ce1 | 1171 | if (!XFS_DQ_IS_DIRTY(dqp) || |
20026d92 | 1172 | (!(flags & SYNC_WAIT) && atomic_read(&dqp->q_pincount) > 0)) { |
1da177e4 | 1173 | xfs_dqfunlock(dqp); |
2f8a3ce1 | 1174 | return 0; |
1da177e4 | 1175 | } |
1da177e4 LT |
1176 | xfs_qm_dqunpin_wait(dqp); |
1177 | ||
1178 | /* | |
1179 | * This may have been unpinned because the filesystem is shutting | |
1180 | * down forcibly. If that's the case we must not write this dquot | |
1181 | * to disk, because the log record didn't make it to disk! | |
1182 | */ | |
1183 | if (XFS_FORCED_SHUTDOWN(dqp->q_mount)) { | |
1184 | dqp->dq_flags &= ~(XFS_DQ_DIRTY); | |
1185 | xfs_dqfunlock(dqp); | |
1186 | return XFS_ERROR(EIO); | |
1187 | } | |
1188 | ||
1189 | /* | |
1190 | * Get the buffer containing the on-disk dquot | |
1191 | * We don't need a transaction envelope because we know that the | |
1192 | * the ondisk-dquot has already been allocated for. | |
1193 | */ | |
1194 | if ((error = xfs_qm_dqtobp(NULL, dqp, &ddqp, &bp, XFS_QMOPT_DOWARN))) { | |
1da177e4 LT |
1195 | ASSERT(error != ENOENT); |
1196 | /* | |
1197 | * Quotas could have gotten turned off (ESRCH) | |
1198 | */ | |
1199 | xfs_dqfunlock(dqp); | |
1200 | return (error); | |
1201 | } | |
1202 | ||
1149d96a | 1203 | if (xfs_qm_dqcheck(&dqp->q_core, be32_to_cpu(ddqp->d_id), |
c8ad20ff | 1204 | 0, XFS_QMOPT_DOWARN, "dqflush (incore copy)")) { |
7d04a335 | 1205 | xfs_force_shutdown(dqp->q_mount, SHUTDOWN_CORRUPT_INCORE); |
1da177e4 LT |
1206 | return XFS_ERROR(EIO); |
1207 | } | |
1208 | ||
1209 | /* This is the only portion of data that needs to persist */ | |
1210 | memcpy(ddqp, &(dqp->q_core), sizeof(xfs_disk_dquot_t)); | |
1211 | ||
1212 | /* | |
1213 | * Clear the dirty field and remember the flush lsn for later use. | |
1214 | */ | |
1215 | dqp->dq_flags &= ~(XFS_DQ_DIRTY); | |
1216 | mp = dqp->q_mount; | |
1217 | ||
7b2e2a31 DC |
1218 | xfs_trans_ail_copy_lsn(mp->m_ail, &dqp->q_logitem.qli_flush_lsn, |
1219 | &dqp->q_logitem.qli_item.li_lsn); | |
1da177e4 LT |
1220 | |
1221 | /* | |
1222 | * Attach an iodone routine so that we can remove this dquot from the | |
1223 | * AIL and release the flush lock once the dquot is synced to disk. | |
1224 | */ | |
1225 | xfs_buf_attach_iodone(bp, (void(*)(xfs_buf_t *, xfs_log_item_t *)) | |
1226 | xfs_qm_dqflush_done, &(dqp->q_logitem.qli_item)); | |
1227 | /* | |
1228 | * If the buffer is pinned then push on the log so we won't | |
1229 | * get stuck waiting in the write for too long. | |
1230 | */ | |
1231 | if (XFS_BUF_ISPINNED(bp)) { | |
0b1b213f | 1232 | trace_xfs_dqflush_force(dqp); |
a14a348b | 1233 | xfs_log_force(mp, 0); |
1da177e4 LT |
1234 | } |
1235 | ||
20026d92 | 1236 | if (flags & SYNC_WAIT) |
1da177e4 | 1237 | error = xfs_bwrite(mp, bp); |
20026d92 DC |
1238 | else |
1239 | xfs_bdwrite(mp, bp); | |
0b1b213f CH |
1240 | |
1241 | trace_xfs_dqflush_done(dqp); | |
1242 | ||
1da177e4 LT |
1243 | /* |
1244 | * dqp is still locked, but caller is free to unlock it now. | |
1245 | */ | |
20026d92 | 1246 | return error; |
1da177e4 LT |
1247 | |
1248 | } | |
1249 | ||
1250 | /* | |
1251 | * This is the dquot flushing I/O completion routine. It is called | |
1252 | * from interrupt level when the buffer containing the dquot is | |
1253 | * flushed to disk. It is responsible for removing the dquot logitem | |
1254 | * from the AIL if it has not been re-logged, and unlocking the dquot's | |
1255 | * flush lock. This behavior is very similar to that of inodes.. | |
1256 | */ | |
1257 | /*ARGSUSED*/ | |
1258 | STATIC void | |
1259 | xfs_qm_dqflush_done( | |
1260 | xfs_buf_t *bp, | |
1261 | xfs_dq_logitem_t *qip) | |
1262 | { | |
1263 | xfs_dquot_t *dqp; | |
783a2f65 | 1264 | struct xfs_ail *ailp; |
1da177e4 LT |
1265 | |
1266 | dqp = qip->qli_dquot; | |
783a2f65 | 1267 | ailp = qip->qli_item.li_ailp; |
1da177e4 LT |
1268 | |
1269 | /* | |
1270 | * We only want to pull the item from the AIL if its | |
1271 | * location in the log has not changed since we started the flush. | |
1272 | * Thus, we only bother if the dquot's lsn has | |
1273 | * not changed. First we check the lsn outside the lock | |
1274 | * since it's cheaper, and then we recheck while | |
1275 | * holding the lock before removing the dquot from the AIL. | |
1276 | */ | |
1277 | if ((qip->qli_item.li_flags & XFS_LI_IN_AIL) && | |
1278 | qip->qli_item.li_lsn == qip->qli_flush_lsn) { | |
1279 | ||
783a2f65 DC |
1280 | /* xfs_trans_ail_delete() drops the AIL lock. */ |
1281 | spin_lock(&ailp->xa_lock); | |
1da177e4 | 1282 | if (qip->qli_item.li_lsn == qip->qli_flush_lsn) |
783a2f65 | 1283 | xfs_trans_ail_delete(ailp, (xfs_log_item_t*)qip); |
1da177e4 | 1284 | else |
783a2f65 | 1285 | spin_unlock(&ailp->xa_lock); |
1da177e4 LT |
1286 | } |
1287 | ||
1288 | /* | |
1289 | * Release the dq's flush lock since we're done with it. | |
1290 | */ | |
1291 | xfs_dqfunlock(dqp); | |
1292 | } | |
1293 | ||
1da177e4 LT |
1294 | int |
1295 | xfs_qm_dqlock_nowait( | |
1296 | xfs_dquot_t *dqp) | |
1297 | { | |
e1f49cf2 | 1298 | return mutex_trylock(&dqp->q_qlock); |
1da177e4 LT |
1299 | } |
1300 | ||
1301 | void | |
1302 | xfs_dqlock( | |
1303 | xfs_dquot_t *dqp) | |
1304 | { | |
e1f49cf2 | 1305 | mutex_lock(&dqp->q_qlock); |
1da177e4 LT |
1306 | } |
1307 | ||
1308 | void | |
1309 | xfs_dqunlock( | |
1310 | xfs_dquot_t *dqp) | |
1311 | { | |
1312 | mutex_unlock(&(dqp->q_qlock)); | |
1313 | if (dqp->q_logitem.qli_dquot == dqp) { | |
1314 | /* Once was dqp->q_mount, but might just have been cleared */ | |
783a2f65 | 1315 | xfs_trans_unlocked_item(dqp->q_logitem.qli_item.li_ailp, |
1da177e4 LT |
1316 | (xfs_log_item_t*)&(dqp->q_logitem)); |
1317 | } | |
1318 | } | |
1319 | ||
1320 | ||
1321 | void | |
1322 | xfs_dqunlock_nonotify( | |
1323 | xfs_dquot_t *dqp) | |
1324 | { | |
1325 | mutex_unlock(&(dqp->q_qlock)); | |
1326 | } | |
1327 | ||
5bb87a33 CH |
1328 | /* |
1329 | * Lock two xfs_dquot structures. | |
1330 | * | |
1331 | * To avoid deadlocks we always lock the quota structure with | |
1332 | * the lowerd id first. | |
1333 | */ | |
1da177e4 LT |
1334 | void |
1335 | xfs_dqlock2( | |
1336 | xfs_dquot_t *d1, | |
1337 | xfs_dquot_t *d2) | |
1338 | { | |
1339 | if (d1 && d2) { | |
1340 | ASSERT(d1 != d2); | |
1149d96a CH |
1341 | if (be32_to_cpu(d1->q_core.d_id) > |
1342 | be32_to_cpu(d2->q_core.d_id)) { | |
5bb87a33 CH |
1343 | mutex_lock(&d2->q_qlock); |
1344 | mutex_lock_nested(&d1->q_qlock, XFS_QLOCK_NESTED); | |
1da177e4 | 1345 | } else { |
5bb87a33 CH |
1346 | mutex_lock(&d1->q_qlock); |
1347 | mutex_lock_nested(&d2->q_qlock, XFS_QLOCK_NESTED); | |
1da177e4 | 1348 | } |
5bb87a33 CH |
1349 | } else if (d1) { |
1350 | mutex_lock(&d1->q_qlock); | |
1351 | } else if (d2) { | |
1352 | mutex_lock(&d2->q_qlock); | |
1da177e4 LT |
1353 | } |
1354 | } | |
1355 | ||
1356 | ||
1357 | /* | |
1358 | * Take a dquot out of the mount's dqlist as well as the hashlist. | |
1359 | * This is called via unmount as well as quotaoff, and the purge | |
1360 | * will always succeed unless there are soft (temp) references | |
1361 | * outstanding. | |
1362 | * | |
1363 | * This returns 0 if it was purged, 1 if it wasn't. It's not an error code | |
1364 | * that we're returning! XXXsup - not cool. | |
1365 | */ | |
1366 | /* ARGSUSED */ | |
1367 | int | |
1368 | xfs_qm_dqpurge( | |
4f0e8a98 | 1369 | xfs_dquot_t *dqp) |
1da177e4 | 1370 | { |
e6a81f13 | 1371 | xfs_dqhash_t *qh = dqp->q_hash; |
3c56836f | 1372 | xfs_mount_t *mp = dqp->q_mount; |
1da177e4 | 1373 | |
3a25404b | 1374 | ASSERT(mutex_is_locked(&mp->m_quotainfo->qi_dqlist_lock)); |
c9a192dc | 1375 | ASSERT(mutex_is_locked(&dqp->q_hash->qh_lock)); |
1da177e4 LT |
1376 | |
1377 | xfs_dqlock(dqp); | |
1378 | /* | |
1379 | * We really can't afford to purge a dquot that is | |
1380 | * referenced, because these are hard refs. | |
1381 | * It shouldn't happen in general because we went thru _all_ inodes in | |
1382 | * dqrele_all_inodes before calling this and didn't let the mountlock go. | |
1383 | * However it is possible that we have dquots with temporary | |
1384 | * references that are not attached to an inode. e.g. see xfs_setattr(). | |
1385 | */ | |
1386 | if (dqp->q_nrefs != 0) { | |
1387 | xfs_dqunlock(dqp); | |
c9a192dc | 1388 | mutex_unlock(&dqp->q_hash->qh_lock); |
1da177e4 LT |
1389 | return (1); |
1390 | } | |
1391 | ||
3a8406f6 | 1392 | ASSERT(!list_empty(&dqp->q_freelist)); |
1da177e4 LT |
1393 | |
1394 | /* | |
1395 | * If we're turning off quotas, we have to make sure that, for | |
1396 | * example, we don't delete quota disk blocks while dquots are | |
1397 | * in the process of getting written to those disk blocks. | |
1398 | * This dquot might well be on AIL, and we can't leave it there | |
1399 | * if we're turning off quotas. Basically, we need this flush | |
1400 | * lock, and are willing to block on it. | |
1401 | */ | |
e1f49cf2 | 1402 | if (!xfs_dqflock_nowait(dqp)) { |
1da177e4 LT |
1403 | /* |
1404 | * Block on the flush lock after nudging dquot buffer, | |
1405 | * if it is incore. | |
1406 | */ | |
1407 | xfs_qm_dqflock_pushbuf_wait(dqp); | |
1408 | } | |
1409 | ||
1410 | /* | |
1411 | * XXXIf we're turning this type of quotas off, we don't care | |
1412 | * about the dirty metadata sitting in this dquot. OTOH, if | |
1413 | * we're unmounting, we do care, so we flush it and wait. | |
1414 | */ | |
1415 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
3c56836f | 1416 | int error; |
0b1b213f | 1417 | |
1da177e4 LT |
1418 | /* dqflush unlocks dqflock */ |
1419 | /* | |
1420 | * Given that dqpurge is a very rare occurrence, it is OK | |
1421 | * that we're holding the hashlist and mplist locks | |
1422 | * across the disk write. But, ... XXXsup | |
1423 | * | |
1424 | * We don't care about getting disk errors here. We need | |
1425 | * to purge this dquot anyway, so we go ahead regardless. | |
1426 | */ | |
20026d92 | 1427 | error = xfs_qm_dqflush(dqp, SYNC_WAIT); |
3c56836f DC |
1428 | if (error) |
1429 | xfs_fs_cmn_err(CE_WARN, mp, | |
1430 | "xfs_qm_dqpurge: dquot %p flush failed", dqp); | |
1da177e4 LT |
1431 | xfs_dqflock(dqp); |
1432 | } | |
bc3048e3 | 1433 | ASSERT(atomic_read(&dqp->q_pincount) == 0); |
1da177e4 LT |
1434 | ASSERT(XFS_FORCED_SHUTDOWN(mp) || |
1435 | !(dqp->q_logitem.qli_item.li_flags & XFS_LI_IN_AIL)); | |
1436 | ||
e6a81f13 DC |
1437 | list_del_init(&dqp->q_hashlist); |
1438 | qh->qh_version++; | |
3a25404b DC |
1439 | list_del_init(&dqp->q_mplist); |
1440 | mp->m_quotainfo->qi_dqreclaims++; | |
1441 | mp->m_quotainfo->qi_dquots--; | |
1da177e4 LT |
1442 | /* |
1443 | * XXX Move this to the front of the freelist, if we can get the | |
1444 | * freelist lock. | |
1445 | */ | |
3a8406f6 | 1446 | ASSERT(!list_empty(&dqp->q_freelist)); |
1da177e4 LT |
1447 | |
1448 | dqp->q_mount = NULL; | |
1449 | dqp->q_hash = NULL; | |
1450 | dqp->dq_flags = XFS_DQ_INACTIVE; | |
1451 | memset(&dqp->q_core, 0, sizeof(dqp->q_core)); | |
1452 | xfs_dqfunlock(dqp); | |
1453 | xfs_dqunlock(dqp); | |
e6a81f13 | 1454 | mutex_unlock(&qh->qh_lock); |
1da177e4 LT |
1455 | return (0); |
1456 | } | |
1457 | ||
1458 | ||
1459 | #ifdef QUOTADEBUG | |
1460 | void | |
1461 | xfs_qm_dqprint(xfs_dquot_t *dqp) | |
1462 | { | |
1463 | cmn_err(CE_DEBUG, "-----------KERNEL DQUOT----------------"); | |
1464 | cmn_err(CE_DEBUG, "---- dquotID = %d", | |
1149d96a | 1465 | (int)be32_to_cpu(dqp->q_core.d_id)); |
c8ad20ff | 1466 | cmn_err(CE_DEBUG, "---- type = %s", DQFLAGTO_TYPESTR(dqp)); |
1da177e4 LT |
1467 | cmn_err(CE_DEBUG, "---- fs = 0x%p", dqp->q_mount); |
1468 | cmn_err(CE_DEBUG, "---- blkno = 0x%x", (int) dqp->q_blkno); | |
1469 | cmn_err(CE_DEBUG, "---- boffset = 0x%x", (int) dqp->q_bufoffset); | |
1470 | cmn_err(CE_DEBUG, "---- blkhlimit = %Lu (0x%x)", | |
1149d96a CH |
1471 | be64_to_cpu(dqp->q_core.d_blk_hardlimit), |
1472 | (int)be64_to_cpu(dqp->q_core.d_blk_hardlimit)); | |
1da177e4 | 1473 | cmn_err(CE_DEBUG, "---- blkslimit = %Lu (0x%x)", |
1149d96a CH |
1474 | be64_to_cpu(dqp->q_core.d_blk_softlimit), |
1475 | (int)be64_to_cpu(dqp->q_core.d_blk_softlimit)); | |
1da177e4 | 1476 | cmn_err(CE_DEBUG, "---- inohlimit = %Lu (0x%x)", |
1149d96a CH |
1477 | be64_to_cpu(dqp->q_core.d_ino_hardlimit), |
1478 | (int)be64_to_cpu(dqp->q_core.d_ino_hardlimit)); | |
1da177e4 | 1479 | cmn_err(CE_DEBUG, "---- inoslimit = %Lu (0x%x)", |
1149d96a CH |
1480 | be64_to_cpu(dqp->q_core.d_ino_softlimit), |
1481 | (int)be64_to_cpu(dqp->q_core.d_ino_softlimit)); | |
1da177e4 | 1482 | cmn_err(CE_DEBUG, "---- bcount = %Lu (0x%x)", |
1149d96a CH |
1483 | be64_to_cpu(dqp->q_core.d_bcount), |
1484 | (int)be64_to_cpu(dqp->q_core.d_bcount)); | |
1da177e4 | 1485 | cmn_err(CE_DEBUG, "---- icount = %Lu (0x%x)", |
1149d96a CH |
1486 | be64_to_cpu(dqp->q_core.d_icount), |
1487 | (int)be64_to_cpu(dqp->q_core.d_icount)); | |
1da177e4 | 1488 | cmn_err(CE_DEBUG, "---- btimer = %d", |
1149d96a | 1489 | (int)be32_to_cpu(dqp->q_core.d_btimer)); |
1da177e4 | 1490 | cmn_err(CE_DEBUG, "---- itimer = %d", |
1149d96a | 1491 | (int)be32_to_cpu(dqp->q_core.d_itimer)); |
1da177e4 LT |
1492 | cmn_err(CE_DEBUG, "---------------------------"); |
1493 | } | |
1494 | #endif | |
1495 | ||
1496 | /* | |
1497 | * Give the buffer a little push if it is incore and | |
1498 | * wait on the flush lock. | |
1499 | */ | |
1500 | void | |
1501 | xfs_qm_dqflock_pushbuf_wait( | |
1502 | xfs_dquot_t *dqp) | |
1503 | { | |
8a7b8a89 | 1504 | xfs_mount_t *mp = dqp->q_mount; |
1da177e4 LT |
1505 | xfs_buf_t *bp; |
1506 | ||
1507 | /* | |
1508 | * Check to see if the dquot has been flushed delayed | |
1509 | * write. If so, grab its buffer and send it | |
1510 | * out immediately. We'll be able to acquire | |
1511 | * the flush lock when the I/O completes. | |
1512 | */ | |
8a7b8a89 CH |
1513 | bp = xfs_incore(mp->m_ddev_targp, dqp->q_blkno, |
1514 | mp->m_quotainfo->qi_dqchunklen, XBF_TRYLOCK); | |
7d6a7bde DC |
1515 | if (!bp) |
1516 | goto out_lock; | |
1517 | ||
1518 | if (XFS_BUF_ISDELAYWRITE(bp)) { | |
1519 | if (XFS_BUF_ISPINNED(bp)) | |
8a7b8a89 | 1520 | xfs_log_force(mp, 0); |
7d6a7bde DC |
1521 | xfs_buf_delwri_promote(bp); |
1522 | wake_up_process(bp->b_target->bt_task); | |
1da177e4 | 1523 | } |
7d6a7bde DC |
1524 | xfs_buf_relse(bp); |
1525 | out_lock: | |
1da177e4 LT |
1526 | xfs_dqflock(dqp); |
1527 | } |