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) { | |
104 | dqp->dq_flnext = dqp->dq_flprev = dqp; | |
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 | */ | |
122 | dqp->q_nrefs = 0; | |
123 | dqp->q_blkno = 0; | |
3a25404b DC |
124 | INIT_LIST_HEAD(&dqp->q_mplist); |
125 | dqp->HL_NEXT = NULL; | |
126 | dqp->HL_PREVP = NULL; | |
1da177e4 LT |
127 | dqp->q_bufoffset = 0; |
128 | dqp->q_fileoffset = 0; | |
129 | dqp->q_transp = NULL; | |
130 | dqp->q_gdquot = NULL; | |
131 | dqp->q_res_bcount = 0; | |
132 | dqp->q_res_icount = 0; | |
133 | dqp->q_res_rtbcount = 0; | |
bc3048e3 | 134 | atomic_set(&dqp->q_pincount, 0); |
1da177e4 LT |
135 | dqp->q_hash = NULL; |
136 | ASSERT(dqp->dq_flnext == dqp->dq_flprev); | |
137 | ||
0b1b213f | 138 | trace_xfs_dqreuse(dqp); |
98b8c7a0 CH |
139 | } |
140 | ||
141 | /* | |
142 | * In either case we need to make sure group quotas have a different | |
143 | * lock class than user quotas, to make sure lockdep knows we can | |
144 | * locks of one of each at the same time. | |
145 | */ | |
146 | if (!(type & XFS_DQ_USER)) | |
147 | lockdep_set_class(&dqp->q_qlock, &xfs_dquot_other_class); | |
1da177e4 LT |
148 | |
149 | /* | |
150 | * log item gets initialized later | |
151 | */ | |
152 | return (dqp); | |
153 | } | |
154 | ||
155 | /* | |
156 | * This is called to free all the memory associated with a dquot | |
157 | */ | |
158 | void | |
159 | xfs_qm_dqdestroy( | |
160 | xfs_dquot_t *dqp) | |
161 | { | |
162 | ASSERT(! XFS_DQ_IS_ON_FREELIST(dqp)); | |
163 | ||
164 | mutex_destroy(&dqp->q_qlock); | |
1da177e4 | 165 | sv_destroy(&dqp->q_pinwait); |
1da177e4 | 166 | kmem_zone_free(xfs_Gqm->qm_dqzone, dqp); |
0b1b213f | 167 | |
1da177e4 LT |
168 | atomic_dec(&xfs_Gqm->qm_totaldquots); |
169 | } | |
170 | ||
171 | /* | |
172 | * This is what a 'fresh' dquot inside a dquot chunk looks like on disk. | |
173 | */ | |
174 | STATIC void | |
175 | xfs_qm_dqinit_core( | |
176 | xfs_dqid_t id, | |
177 | uint type, | |
178 | xfs_dqblk_t *d) | |
179 | { | |
180 | /* | |
181 | * Caller has zero'd the entire dquot 'chunk' already. | |
182 | */ | |
1149d96a CH |
183 | d->dd_diskdq.d_magic = cpu_to_be16(XFS_DQUOT_MAGIC); |
184 | d->dd_diskdq.d_version = XFS_DQUOT_VERSION; | |
185 | d->dd_diskdq.d_id = cpu_to_be32(id); | |
186 | d->dd_diskdq.d_flags = type; | |
1da177e4 LT |
187 | } |
188 | ||
1da177e4 LT |
189 | /* |
190 | * If default limits are in force, push them into the dquot now. | |
191 | * We overwrite the dquot limits only if they are zero and this | |
192 | * is not the root dquot. | |
193 | */ | |
194 | void | |
195 | xfs_qm_adjust_dqlimits( | |
196 | xfs_mount_t *mp, | |
197 | xfs_disk_dquot_t *d) | |
198 | { | |
199 | xfs_quotainfo_t *q = mp->m_quotainfo; | |
200 | ||
201 | ASSERT(d->d_id); | |
202 | ||
203 | if (q->qi_bsoftlimit && !d->d_blk_softlimit) | |
1149d96a | 204 | d->d_blk_softlimit = cpu_to_be64(q->qi_bsoftlimit); |
1da177e4 | 205 | if (q->qi_bhardlimit && !d->d_blk_hardlimit) |
1149d96a | 206 | d->d_blk_hardlimit = cpu_to_be64(q->qi_bhardlimit); |
1da177e4 | 207 | if (q->qi_isoftlimit && !d->d_ino_softlimit) |
1149d96a | 208 | d->d_ino_softlimit = cpu_to_be64(q->qi_isoftlimit); |
1da177e4 | 209 | if (q->qi_ihardlimit && !d->d_ino_hardlimit) |
1149d96a | 210 | d->d_ino_hardlimit = cpu_to_be64(q->qi_ihardlimit); |
1da177e4 | 211 | if (q->qi_rtbsoftlimit && !d->d_rtb_softlimit) |
1149d96a | 212 | d->d_rtb_softlimit = cpu_to_be64(q->qi_rtbsoftlimit); |
1da177e4 | 213 | if (q->qi_rtbhardlimit && !d->d_rtb_hardlimit) |
1149d96a | 214 | d->d_rtb_hardlimit = cpu_to_be64(q->qi_rtbhardlimit); |
1da177e4 LT |
215 | } |
216 | ||
217 | /* | |
218 | * Check the limits and timers of a dquot and start or reset timers | |
219 | * if necessary. | |
220 | * This gets called even when quota enforcement is OFF, which makes our | |
221 | * life a little less complicated. (We just don't reject any quota | |
222 | * reservations in that case, when enforcement is off). | |
223 | * We also return 0 as the values of the timers in Q_GETQUOTA calls, when | |
224 | * enforcement's off. | |
225 | * In contrast, warnings are a little different in that they don't | |
754002b4 NS |
226 | * 'automatically' get started when limits get exceeded. They do |
227 | * get reset to zero, however, when we find the count to be under | |
228 | * the soft limit (they are only ever set non-zero via userspace). | |
1da177e4 LT |
229 | */ |
230 | void | |
231 | xfs_qm_adjust_dqtimers( | |
232 | xfs_mount_t *mp, | |
233 | xfs_disk_dquot_t *d) | |
234 | { | |
235 | ASSERT(d->d_id); | |
236 | ||
237 | #ifdef QUOTADEBUG | |
1149d96a CH |
238 | if (d->d_blk_hardlimit) |
239 | ASSERT(be64_to_cpu(d->d_blk_softlimit) <= | |
240 | be64_to_cpu(d->d_blk_hardlimit)); | |
241 | if (d->d_ino_hardlimit) | |
242 | ASSERT(be64_to_cpu(d->d_ino_softlimit) <= | |
243 | be64_to_cpu(d->d_ino_hardlimit)); | |
244 | if (d->d_rtb_hardlimit) | |
245 | ASSERT(be64_to_cpu(d->d_rtb_softlimit) <= | |
246 | be64_to_cpu(d->d_rtb_hardlimit)); | |
1da177e4 LT |
247 | #endif |
248 | if (!d->d_btimer) { | |
1149d96a CH |
249 | if ((d->d_blk_softlimit && |
250 | (be64_to_cpu(d->d_bcount) >= | |
251 | be64_to_cpu(d->d_blk_softlimit))) || | |
252 | (d->d_blk_hardlimit && | |
253 | (be64_to_cpu(d->d_bcount) >= | |
254 | be64_to_cpu(d->d_blk_hardlimit)))) { | |
255 | d->d_btimer = cpu_to_be32(get_seconds() + | |
256 | XFS_QI_BTIMELIMIT(mp)); | |
754002b4 NS |
257 | } else { |
258 | d->d_bwarns = 0; | |
1da177e4 LT |
259 | } |
260 | } else { | |
261 | if ((!d->d_blk_softlimit || | |
1149d96a CH |
262 | (be64_to_cpu(d->d_bcount) < |
263 | be64_to_cpu(d->d_blk_softlimit))) && | |
1da177e4 | 264 | (!d->d_blk_hardlimit || |
1149d96a CH |
265 | (be64_to_cpu(d->d_bcount) < |
266 | be64_to_cpu(d->d_blk_hardlimit)))) { | |
1da177e4 LT |
267 | d->d_btimer = 0; |
268 | } | |
269 | } | |
270 | ||
271 | if (!d->d_itimer) { | |
1149d96a CH |
272 | if ((d->d_ino_softlimit && |
273 | (be64_to_cpu(d->d_icount) >= | |
274 | be64_to_cpu(d->d_ino_softlimit))) || | |
275 | (d->d_ino_hardlimit && | |
276 | (be64_to_cpu(d->d_icount) >= | |
277 | be64_to_cpu(d->d_ino_hardlimit)))) { | |
278 | d->d_itimer = cpu_to_be32(get_seconds() + | |
279 | XFS_QI_ITIMELIMIT(mp)); | |
754002b4 NS |
280 | } else { |
281 | d->d_iwarns = 0; | |
1da177e4 LT |
282 | } |
283 | } else { | |
284 | if ((!d->d_ino_softlimit || | |
1149d96a CH |
285 | (be64_to_cpu(d->d_icount) < |
286 | be64_to_cpu(d->d_ino_softlimit))) && | |
1da177e4 | 287 | (!d->d_ino_hardlimit || |
1149d96a CH |
288 | (be64_to_cpu(d->d_icount) < |
289 | be64_to_cpu(d->d_ino_hardlimit)))) { | |
1da177e4 LT |
290 | d->d_itimer = 0; |
291 | } | |
292 | } | |
293 | ||
294 | if (!d->d_rtbtimer) { | |
1149d96a CH |
295 | if ((d->d_rtb_softlimit && |
296 | (be64_to_cpu(d->d_rtbcount) >= | |
297 | be64_to_cpu(d->d_rtb_softlimit))) || | |
298 | (d->d_rtb_hardlimit && | |
299 | (be64_to_cpu(d->d_rtbcount) >= | |
300 | be64_to_cpu(d->d_rtb_hardlimit)))) { | |
301 | d->d_rtbtimer = cpu_to_be32(get_seconds() + | |
302 | XFS_QI_RTBTIMELIMIT(mp)); | |
754002b4 NS |
303 | } else { |
304 | d->d_rtbwarns = 0; | |
1da177e4 LT |
305 | } |
306 | } else { | |
307 | if ((!d->d_rtb_softlimit || | |
1149d96a CH |
308 | (be64_to_cpu(d->d_rtbcount) < |
309 | be64_to_cpu(d->d_rtb_softlimit))) && | |
1da177e4 | 310 | (!d->d_rtb_hardlimit || |
1149d96a CH |
311 | (be64_to_cpu(d->d_rtbcount) < |
312 | be64_to_cpu(d->d_rtb_hardlimit)))) { | |
1da177e4 LT |
313 | d->d_rtbtimer = 0; |
314 | } | |
315 | } | |
316 | } | |
317 | ||
1da177e4 LT |
318 | /* |
319 | * initialize a buffer full of dquots and log the whole thing | |
320 | */ | |
321 | STATIC void | |
322 | xfs_qm_init_dquot_blk( | |
323 | xfs_trans_t *tp, | |
324 | xfs_mount_t *mp, | |
325 | xfs_dqid_t id, | |
326 | uint type, | |
327 | xfs_buf_t *bp) | |
328 | { | |
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 | */ | |
341 | curid = id - (id % XFS_QM_DQPERBLK(mp)); | |
342 | ASSERT(curid >= 0); | |
343 | memset(d, 0, BBTOB(XFS_QI_DQCHUNKLEN(mp))); | |
344 | for (i = 0; i < XFS_QM_DQPERBLK(mp); i++, d++, curid++) | |
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))); | |
1da177e4 LT |
350 | xfs_trans_log_buf(tp, bp, 0, BBTOB(XFS_QI_DQCHUNKLEN(mp)) - 1); |
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, | |
423 | XFS_QI_DQCHUNKLEN(mp), | |
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 */ | |
c310ab6c | 504 | dqp->q_fileoffset = (xfs_fileoff_t)id / XFS_QM_DQPERBLK(mp); |
1da177e4 LT |
505 | nmaps = 1; |
506 | quotip = XFS_DQ_TO_QIP(dqp); | |
507 | xfs_ilock(quotip, XFS_ILOCK_SHARED); | |
508 | /* | |
509 | * Return if this type of quotas is turned off while we didn't | |
510 | * have an inode lock | |
511 | */ | |
512 | if (XFS_IS_THIS_QUOTA_OFF(dqp)) { | |
513 | xfs_iunlock(quotip, XFS_ILOCK_SHARED); | |
514 | return (ESRCH); | |
515 | } | |
516 | /* | |
517 | * Find the block map; no allocations yet | |
518 | */ | |
519 | error = xfs_bmapi(NULL, quotip, dqp->q_fileoffset, | |
520 | XFS_DQUOT_CLUSTER_SIZE_FSB, | |
521 | XFS_BMAPI_METADATA, | |
3e57ecf6 | 522 | NULL, 0, &map, &nmaps, NULL, NULL); |
1da177e4 LT |
523 | |
524 | xfs_iunlock(quotip, XFS_ILOCK_SHARED); | |
525 | if (error) | |
526 | return (error); | |
527 | ASSERT(nmaps == 1); | |
528 | ASSERT(map.br_blockcount == 1); | |
529 | ||
530 | /* | |
531 | * offset of dquot in the (fixed sized) dquot chunk. | |
532 | */ | |
533 | dqp->q_bufoffset = (id % XFS_QM_DQPERBLK(mp)) * | |
534 | sizeof(xfs_dqblk_t); | |
535 | if (map.br_startblock == HOLESTARTBLOCK) { | |
536 | /* | |
537 | * We don't allocate unless we're asked to | |
538 | */ | |
539 | if (!(flags & XFS_QMOPT_DQALLOC)) | |
540 | return (ENOENT); | |
541 | ||
542 | ASSERT(tp); | |
efa092f3 | 543 | if ((error = xfs_qm_dqalloc(tpp, mp, dqp, quotip, |
1da177e4 LT |
544 | dqp->q_fileoffset, &bp))) |
545 | return (error); | |
efa092f3 | 546 | tp = *tpp; |
1da177e4 LT |
547 | newdquot = B_TRUE; |
548 | } else { | |
549 | /* | |
550 | * store the blkno etc so that we don't have to do the | |
551 | * mapping all the time | |
552 | */ | |
553 | dqp->q_blkno = XFS_FSB_TO_DADDR(mp, map.br_startblock); | |
554 | } | |
555 | } | |
556 | ASSERT(dqp->q_blkno != DELAYSTARTBLOCK); | |
557 | ASSERT(dqp->q_blkno != HOLESTARTBLOCK); | |
558 | ||
559 | /* | |
560 | * Read in the buffer, unless we've just done the allocation | |
561 | * (in which case we already have the buf). | |
562 | */ | |
563 | if (! newdquot) { | |
0b1b213f CH |
564 | trace_xfs_dqtobp_read(dqp); |
565 | ||
1da177e4 LT |
566 | if ((error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, |
567 | dqp->q_blkno, | |
568 | XFS_QI_DQCHUNKLEN(mp), | |
569 | 0, &bp))) { | |
570 | return (error); | |
571 | } | |
572 | if (error || !bp) | |
573 | return XFS_ERROR(error); | |
574 | } | |
575 | ASSERT(XFS_BUF_ISBUSY(bp)); | |
576 | ASSERT(XFS_BUF_VALUSEMA(bp) <= 0); | |
577 | ||
578 | /* | |
579 | * calculate the location of the dquot inside the buffer. | |
580 | */ | |
581 | ddq = (xfs_disk_dquot_t *)((char *)XFS_BUF_PTR(bp) + dqp->q_bufoffset); | |
582 | ||
583 | /* | |
584 | * A simple sanity check in case we got a corrupted dquot... | |
585 | */ | |
c8ad20ff | 586 | if (xfs_qm_dqcheck(ddq, id, dqp->dq_flags & XFS_DQ_ALLTYPES, |
1da177e4 LT |
587 | flags & (XFS_QMOPT_DQREPAIR|XFS_QMOPT_DOWARN), |
588 | "dqtobp")) { | |
589 | if (!(flags & XFS_QMOPT_DQREPAIR)) { | |
590 | xfs_trans_brelse(tp, bp); | |
591 | return XFS_ERROR(EIO); | |
592 | } | |
593 | XFS_BUF_BUSY(bp); /* We dirtied this */ | |
594 | } | |
595 | ||
596 | *O_bpp = bp; | |
597 | *O_ddpp = ddq; | |
598 | ||
599 | return (0); | |
600 | } | |
601 | ||
602 | ||
603 | /* | |
604 | * Read in the ondisk dquot using dqtobp() then copy it to an incore version, | |
605 | * and release the buffer immediately. | |
606 | * | |
607 | */ | |
608 | /* ARGSUSED */ | |
609 | STATIC int | |
610 | xfs_qm_dqread( | |
efa092f3 | 611 | xfs_trans_t **tpp, |
1da177e4 LT |
612 | xfs_dqid_t id, |
613 | xfs_dquot_t *dqp, /* dquot to get filled in */ | |
614 | uint flags) | |
615 | { | |
616 | xfs_disk_dquot_t *ddqp; | |
617 | xfs_buf_t *bp; | |
618 | int error; | |
efa092f3 TS |
619 | xfs_trans_t *tp; |
620 | ||
621 | ASSERT(tpp); | |
1da177e4 | 622 | |
0b1b213f CH |
623 | trace_xfs_dqread(dqp); |
624 | ||
1da177e4 LT |
625 | /* |
626 | * get a pointer to the on-disk dquot and the buffer containing it | |
627 | * dqp already knows its own type (GROUP/USER). | |
628 | */ | |
efa092f3 | 629 | if ((error = xfs_qm_dqtobp(tpp, dqp, &ddqp, &bp, flags))) { |
1da177e4 LT |
630 | return (error); |
631 | } | |
efa092f3 | 632 | tp = *tpp; |
1da177e4 LT |
633 | |
634 | /* copy everything from disk dquot to the incore dquot */ | |
635 | memcpy(&dqp->q_core, ddqp, sizeof(xfs_disk_dquot_t)); | |
1149d96a | 636 | ASSERT(be32_to_cpu(dqp->q_core.d_id) == id); |
1da177e4 LT |
637 | xfs_qm_dquot_logitem_init(dqp); |
638 | ||
639 | /* | |
640 | * Reservation counters are defined as reservation plus current usage | |
641 | * to avoid having to add everytime. | |
642 | */ | |
1149d96a CH |
643 | dqp->q_res_bcount = be64_to_cpu(ddqp->d_bcount); |
644 | dqp->q_res_icount = be64_to_cpu(ddqp->d_icount); | |
645 | dqp->q_res_rtbcount = be64_to_cpu(ddqp->d_rtbcount); | |
1da177e4 LT |
646 | |
647 | /* Mark the buf so that this will stay incore a little longer */ | |
648 | XFS_BUF_SET_VTYPE_REF(bp, B_FS_DQUOT, XFS_DQUOT_REF); | |
649 | ||
650 | /* | |
651 | * We got the buffer with a xfs_trans_read_buf() (in dqtobp()) | |
652 | * So we need to release with xfs_trans_brelse(). | |
653 | * The strategy here is identical to that of inodes; we lock | |
654 | * the dquot in xfs_qm_dqget() before making it accessible to | |
655 | * others. This is because dquots, like inodes, need a good level of | |
656 | * concurrency, and we don't want to take locks on the entire buffers | |
657 | * for dquot accesses. | |
658 | * Note also that the dquot buffer may even be dirty at this point, if | |
659 | * this particular dquot was repaired. We still aren't afraid to | |
660 | * brelse it because we have the changes incore. | |
661 | */ | |
662 | ASSERT(XFS_BUF_ISBUSY(bp)); | |
663 | ASSERT(XFS_BUF_VALUSEMA(bp) <= 0); | |
664 | xfs_trans_brelse(tp, bp); | |
665 | ||
666 | return (error); | |
667 | } | |
668 | ||
669 | ||
670 | /* | |
671 | * allocate an incore dquot from the kernel heap, | |
672 | * and fill its core with quota information kept on disk. | |
673 | * If XFS_QMOPT_DQALLOC is set, it'll allocate a dquot on disk | |
674 | * if it wasn't already allocated. | |
675 | */ | |
676 | STATIC int | |
677 | xfs_qm_idtodq( | |
678 | xfs_mount_t *mp, | |
679 | xfs_dqid_t id, /* gid or uid, depending on type */ | |
680 | uint type, /* UDQUOT or GDQUOT */ | |
681 | uint flags, /* DQALLOC, DQREPAIR */ | |
682 | xfs_dquot_t **O_dqpp)/* OUT : incore dquot, not locked */ | |
683 | { | |
684 | xfs_dquot_t *dqp; | |
685 | int error; | |
686 | xfs_trans_t *tp; | |
687 | int cancelflags=0; | |
688 | ||
689 | dqp = xfs_qm_dqinit(mp, id, type); | |
690 | tp = NULL; | |
691 | if (flags & XFS_QMOPT_DQALLOC) { | |
692 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_DQALLOC); | |
693 | if ((error = xfs_trans_reserve(tp, | |
694 | XFS_QM_DQALLOC_SPACE_RES(mp), | |
695 | XFS_WRITE_LOG_RES(mp) + | |
696 | BBTOB(XFS_QI_DQCHUNKLEN(mp)) - 1 + | |
697 | 128, | |
698 | 0, | |
699 | XFS_TRANS_PERM_LOG_RES, | |
700 | XFS_WRITE_LOG_COUNT))) { | |
701 | cancelflags = 0; | |
702 | goto error0; | |
703 | } | |
704 | cancelflags = XFS_TRANS_RELEASE_LOG_RES; | |
705 | } | |
706 | ||
707 | /* | |
708 | * Read it from disk; xfs_dqread() takes care of | |
709 | * all the necessary initialization of dquot's fields (locks, etc) | |
710 | */ | |
efa092f3 | 711 | if ((error = xfs_qm_dqread(&tp, id, dqp, flags))) { |
1da177e4 LT |
712 | /* |
713 | * This can happen if quotas got turned off (ESRCH), | |
714 | * or if the dquot didn't exist on disk and we ask to | |
715 | * allocate (ENOENT). | |
716 | */ | |
0b1b213f | 717 | trace_xfs_dqread_fail(dqp); |
1da177e4 LT |
718 | cancelflags |= XFS_TRANS_ABORT; |
719 | goto error0; | |
720 | } | |
721 | if (tp) { | |
1c72bf90 | 722 | if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) |
1da177e4 LT |
723 | goto error1; |
724 | } | |
725 | ||
726 | *O_dqpp = dqp; | |
727 | return (0); | |
728 | ||
729 | error0: | |
730 | ASSERT(error); | |
731 | if (tp) | |
732 | xfs_trans_cancel(tp, cancelflags); | |
733 | error1: | |
734 | xfs_qm_dqdestroy(dqp); | |
735 | *O_dqpp = NULL; | |
736 | return (error); | |
737 | } | |
738 | ||
739 | /* | |
740 | * Lookup a dquot in the incore dquot hashtable. We keep two separate | |
741 | * hashtables for user and group dquots; and, these are global tables | |
742 | * inside the XQM, not per-filesystem tables. | |
743 | * The hash chain must be locked by caller, and it is left locked | |
744 | * on return. Returning dquot is locked. | |
745 | */ | |
746 | STATIC int | |
747 | xfs_qm_dqlookup( | |
748 | xfs_mount_t *mp, | |
749 | xfs_dqid_t id, | |
750 | xfs_dqhash_t *qh, | |
751 | xfs_dquot_t **O_dqpp) | |
752 | { | |
753 | xfs_dquot_t *dqp; | |
754 | uint flist_locked; | |
755 | xfs_dquot_t *d; | |
756 | ||
c9a192dc | 757 | ASSERT(mutex_is_locked(&qh->qh_lock)); |
1da177e4 LT |
758 | |
759 | flist_locked = B_FALSE; | |
760 | ||
761 | /* | |
762 | * Traverse the hashchain looking for a match | |
763 | */ | |
764 | for (dqp = qh->qh_next; dqp != NULL; dqp = dqp->HL_NEXT) { | |
765 | /* | |
766 | * We already have the hashlock. We don't need the | |
767 | * dqlock to look at the id field of the dquot, since the | |
768 | * id can't be modified without the hashlock anyway. | |
769 | */ | |
1149d96a | 770 | if (be32_to_cpu(dqp->q_core.d_id) == id && dqp->q_mount == mp) { |
0b1b213f CH |
771 | trace_xfs_dqlookup_found(dqp); |
772 | ||
1da177e4 LT |
773 | /* |
774 | * All in core dquots must be on the dqlist of mp | |
775 | */ | |
3a25404b | 776 | ASSERT(!list_empty(&dqp->q_mplist)); |
1da177e4 LT |
777 | |
778 | xfs_dqlock(dqp); | |
779 | if (dqp->q_nrefs == 0) { | |
780 | ASSERT (XFS_DQ_IS_ON_FREELIST(dqp)); | |
781 | if (! xfs_qm_freelist_lock_nowait(xfs_Gqm)) { | |
0b1b213f | 782 | trace_xfs_dqlookup_want(dqp); |
1da177e4 LT |
783 | |
784 | /* | |
785 | * We may have raced with dqreclaim_one() | |
786 | * (and lost). So, flag that we don't | |
787 | * want the dquot to be reclaimed. | |
788 | */ | |
789 | dqp->dq_flags |= XFS_DQ_WANT; | |
790 | xfs_dqunlock(dqp); | |
791 | xfs_qm_freelist_lock(xfs_Gqm); | |
792 | xfs_dqlock(dqp); | |
793 | dqp->dq_flags &= ~(XFS_DQ_WANT); | |
794 | } | |
795 | flist_locked = B_TRUE; | |
796 | } | |
797 | ||
798 | /* | |
799 | * id couldn't have changed; we had the hashlock all | |
800 | * along | |
801 | */ | |
1149d96a | 802 | ASSERT(be32_to_cpu(dqp->q_core.d_id) == id); |
1da177e4 LT |
803 | |
804 | if (flist_locked) { | |
805 | if (dqp->q_nrefs != 0) { | |
806 | xfs_qm_freelist_unlock(xfs_Gqm); | |
807 | flist_locked = B_FALSE; | |
808 | } else { | |
809 | /* | |
810 | * take it off the freelist | |
811 | */ | |
0b1b213f | 812 | trace_xfs_dqlookup_freelist(dqp); |
1da177e4 LT |
813 | XQM_FREELIST_REMOVE(dqp); |
814 | /* xfs_qm_freelist_print(&(xfs_Gqm-> | |
815 | qm_dqfreelist), | |
816 | "after removal"); */ | |
817 | } | |
818 | } | |
819 | ||
820 | /* | |
821 | * grab a reference | |
822 | */ | |
823 | XFS_DQHOLD(dqp); | |
824 | ||
825 | if (flist_locked) | |
826 | xfs_qm_freelist_unlock(xfs_Gqm); | |
827 | /* | |
828 | * move the dquot to the front of the hashchain | |
829 | */ | |
c9a192dc | 830 | ASSERT(mutex_is_locked(&qh->qh_lock)); |
1da177e4 | 831 | if (dqp->HL_PREVP != &qh->qh_next) { |
0b1b213f | 832 | trace_xfs_dqlookup_move(dqp); |
1da177e4 LT |
833 | if ((d = dqp->HL_NEXT)) |
834 | d->HL_PREVP = dqp->HL_PREVP; | |
835 | *(dqp->HL_PREVP) = d; | |
836 | d = qh->qh_next; | |
837 | d->HL_PREVP = &dqp->HL_NEXT; | |
838 | dqp->HL_NEXT = d; | |
839 | dqp->HL_PREVP = &qh->qh_next; | |
840 | qh->qh_next = dqp; | |
841 | } | |
0b1b213f | 842 | trace_xfs_dqlookup_done(dqp); |
1da177e4 | 843 | *O_dqpp = dqp; |
c9a192dc | 844 | ASSERT(mutex_is_locked(&qh->qh_lock)); |
1da177e4 LT |
845 | return (0); |
846 | } | |
847 | } | |
848 | ||
849 | *O_dqpp = NULL; | |
c9a192dc | 850 | ASSERT(mutex_is_locked(&qh->qh_lock)); |
1da177e4 LT |
851 | return (1); |
852 | } | |
853 | ||
854 | /* | |
855 | * Given the file system, inode OR id, and type (UDQUOT/GDQUOT), return a | |
856 | * a locked dquot, doing an allocation (if requested) as needed. | |
857 | * When both an inode and an id are given, the inode's id takes precedence. | |
858 | * That is, if the id changes while we don't hold the ilock inside this | |
859 | * function, the new dquot is returned, not necessarily the one requested | |
860 | * in the id argument. | |
861 | */ | |
862 | int | |
863 | xfs_qm_dqget( | |
864 | xfs_mount_t *mp, | |
865 | xfs_inode_t *ip, /* locked inode (optional) */ | |
c8ad20ff NS |
866 | xfs_dqid_t id, /* uid/projid/gid depending on type */ |
867 | uint type, /* XFS_DQ_USER/XFS_DQ_PROJ/XFS_DQ_GROUP */ | |
1da177e4 LT |
868 | uint flags, /* DQALLOC, DQSUSER, DQREPAIR, DOWARN */ |
869 | xfs_dquot_t **O_dqpp) /* OUT : locked incore dquot */ | |
870 | { | |
871 | xfs_dquot_t *dqp; | |
872 | xfs_dqhash_t *h; | |
873 | uint version; | |
874 | int error; | |
875 | ||
876 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); | |
877 | if ((! XFS_IS_UQUOTA_ON(mp) && type == XFS_DQ_USER) || | |
c8ad20ff | 878 | (! XFS_IS_PQUOTA_ON(mp) && type == XFS_DQ_PROJ) || |
1da177e4 LT |
879 | (! XFS_IS_GQUOTA_ON(mp) && type == XFS_DQ_GROUP)) { |
880 | return (ESRCH); | |
881 | } | |
882 | h = XFS_DQ_HASH(mp, id, type); | |
883 | ||
884 | #ifdef DEBUG | |
885 | if (xfs_do_dqerror) { | |
886 | if ((xfs_dqerror_target == mp->m_ddev_targp) && | |
887 | (xfs_dqreq_num++ % xfs_dqerror_mod) == 0) { | |
888 | cmn_err(CE_DEBUG, "Returning error in dqget"); | |
889 | return (EIO); | |
890 | } | |
891 | } | |
892 | #endif | |
893 | ||
894 | again: | |
895 | ||
896 | #ifdef DEBUG | |
c8ad20ff NS |
897 | ASSERT(type == XFS_DQ_USER || |
898 | type == XFS_DQ_PROJ || | |
899 | type == XFS_DQ_GROUP); | |
1da177e4 | 900 | if (ip) { |
579aa9ca | 901 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 LT |
902 | if (type == XFS_DQ_USER) |
903 | ASSERT(ip->i_udquot == NULL); | |
904 | else | |
905 | ASSERT(ip->i_gdquot == NULL); | |
906 | } | |
907 | #endif | |
c9a192dc | 908 | mutex_lock(&h->qh_lock); |
1da177e4 LT |
909 | |
910 | /* | |
911 | * Look in the cache (hashtable). | |
912 | * The chain is kept locked during lookup. | |
913 | */ | |
914 | if (xfs_qm_dqlookup(mp, id, h, O_dqpp) == 0) { | |
915 | XQM_STATS_INC(xqmstats.xs_qm_dqcachehits); | |
916 | /* | |
917 | * The dquot was found, moved to the front of the chain, | |
918 | * taken off the freelist if it was on it, and locked | |
919 | * at this point. Just unlock the hashchain and return. | |
920 | */ | |
921 | ASSERT(*O_dqpp); | |
922 | ASSERT(XFS_DQ_IS_LOCKED(*O_dqpp)); | |
c9a192dc | 923 | mutex_unlock(&h->qh_lock); |
0b1b213f | 924 | trace_xfs_dqget_hit(*O_dqpp); |
1da177e4 LT |
925 | return (0); /* success */ |
926 | } | |
927 | XQM_STATS_INC(xqmstats.xs_qm_dqcachemisses); | |
928 | ||
929 | /* | |
930 | * Dquot cache miss. We don't want to keep the inode lock across | |
931 | * a (potential) disk read. Also we don't want to deal with the lock | |
932 | * ordering between quotainode and this inode. OTOH, dropping the inode | |
933 | * lock here means dealing with a chown that can happen before | |
934 | * we re-acquire the lock. | |
935 | */ | |
936 | if (ip) | |
937 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
938 | /* | |
939 | * Save the hashchain version stamp, and unlock the chain, so that | |
940 | * we don't keep the lock across a disk read | |
941 | */ | |
942 | version = h->qh_version; | |
c9a192dc | 943 | mutex_unlock(&h->qh_lock); |
1da177e4 LT |
944 | |
945 | /* | |
946 | * Allocate the dquot on the kernel heap, and read the ondisk | |
947 | * portion off the disk. Also, do all the necessary initialization | |
948 | * This can return ENOENT if dquot didn't exist on disk and we didn't | |
949 | * ask it to allocate; ESRCH if quotas got turned off suddenly. | |
950 | */ | |
951 | if ((error = xfs_qm_idtodq(mp, id, type, | |
952 | flags & (XFS_QMOPT_DQALLOC|XFS_QMOPT_DQREPAIR| | |
953 | XFS_QMOPT_DOWARN), | |
954 | &dqp))) { | |
955 | if (ip) | |
956 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
957 | return (error); | |
958 | } | |
959 | ||
960 | /* | |
961 | * See if this is mount code calling to look at the overall quota limits | |
962 | * which are stored in the id == 0 user or group's dquot. | |
963 | * Since we may not have done a quotacheck by this point, just return | |
964 | * the dquot without attaching it to any hashtables, lists, etc, or even | |
965 | * taking a reference. | |
966 | * The caller must dqdestroy this once done. | |
967 | */ | |
968 | if (flags & XFS_QMOPT_DQSUSER) { | |
969 | ASSERT(id == 0); | |
970 | ASSERT(! ip); | |
971 | goto dqret; | |
972 | } | |
973 | ||
974 | /* | |
975 | * Dquot lock comes after hashlock in the lock ordering | |
976 | */ | |
977 | if (ip) { | |
978 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
979 | if (! XFS_IS_DQTYPE_ON(mp, type)) { | |
980 | /* inode stays locked on return */ | |
981 | xfs_qm_dqdestroy(dqp); | |
982 | return XFS_ERROR(ESRCH); | |
983 | } | |
984 | /* | |
985 | * A dquot could be attached to this inode by now, since | |
986 | * we had dropped the ilock. | |
987 | */ | |
988 | if (type == XFS_DQ_USER) { | |
989 | if (ip->i_udquot) { | |
990 | xfs_qm_dqdestroy(dqp); | |
991 | dqp = ip->i_udquot; | |
992 | xfs_dqlock(dqp); | |
993 | goto dqret; | |
994 | } | |
995 | } else { | |
996 | if (ip->i_gdquot) { | |
997 | xfs_qm_dqdestroy(dqp); | |
998 | dqp = ip->i_gdquot; | |
999 | xfs_dqlock(dqp); | |
1000 | goto dqret; | |
1001 | } | |
1002 | } | |
1003 | } | |
1004 | ||
1005 | /* | |
1006 | * Hashlock comes after ilock in lock order | |
1007 | */ | |
c9a192dc | 1008 | mutex_lock(&h->qh_lock); |
1da177e4 LT |
1009 | if (version != h->qh_version) { |
1010 | xfs_dquot_t *tmpdqp; | |
1011 | /* | |
1012 | * Now, see if somebody else put the dquot in the | |
1013 | * hashtable before us. This can happen because we didn't | |
1014 | * keep the hashchain lock. We don't have to worry about | |
1015 | * lock order between the two dquots here since dqp isn't | |
1016 | * on any findable lists yet. | |
1017 | */ | |
1018 | if (xfs_qm_dqlookup(mp, id, h, &tmpdqp) == 0) { | |
1019 | /* | |
1020 | * Duplicate found. Just throw away the new dquot | |
1021 | * and start over. | |
1022 | */ | |
1023 | xfs_qm_dqput(tmpdqp); | |
c9a192dc | 1024 | mutex_unlock(&h->qh_lock); |
1da177e4 LT |
1025 | xfs_qm_dqdestroy(dqp); |
1026 | XQM_STATS_INC(xqmstats.xs_qm_dquot_dups); | |
1027 | goto again; | |
1028 | } | |
1029 | } | |
1030 | ||
1031 | /* | |
1032 | * Put the dquot at the beginning of the hash-chain and mp's list | |
1033 | * LOCK ORDER: hashlock, freelistlock, mplistlock, udqlock, gdqlock .. | |
1034 | */ | |
c9a192dc | 1035 | ASSERT(mutex_is_locked(&h->qh_lock)); |
1da177e4 LT |
1036 | dqp->q_hash = h; |
1037 | XQM_HASHLIST_INSERT(h, dqp); | |
1038 | ||
1039 | /* | |
1040 | * Attach this dquot to this filesystem's list of all dquots, | |
1041 | * kept inside the mount structure in m_quotainfo field | |
1042 | */ | |
3a25404b | 1043 | mutex_lock(&mp->m_quotainfo->qi_dqlist_lock); |
1da177e4 LT |
1044 | |
1045 | /* | |
1046 | * We return a locked dquot to the caller, with a reference taken | |
1047 | */ | |
1048 | xfs_dqlock(dqp); | |
1049 | dqp->q_nrefs = 1; | |
1050 | ||
3a25404b DC |
1051 | list_add(&dqp->q_mplist, &mp->m_quotainfo->qi_dqlist); |
1052 | mp->m_quotainfo->qi_dquots++; | |
1053 | mutex_unlock(&mp->m_quotainfo->qi_dqlist_lock); | |
c9a192dc | 1054 | mutex_unlock(&h->qh_lock); |
1da177e4 | 1055 | dqret: |
579aa9ca | 1056 | ASSERT((ip == NULL) || xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
0b1b213f | 1057 | trace_xfs_dqget_miss(dqp); |
1da177e4 LT |
1058 | *O_dqpp = dqp; |
1059 | return (0); | |
1060 | } | |
1061 | ||
1062 | ||
1063 | /* | |
1064 | * Release a reference to the dquot (decrement ref-count) | |
1065 | * and unlock it. If there is a group quota attached to this | |
1066 | * dquot, carefully release that too without tripping over | |
1067 | * deadlocks'n'stuff. | |
1068 | */ | |
1069 | void | |
1070 | xfs_qm_dqput( | |
1071 | xfs_dquot_t *dqp) | |
1072 | { | |
1073 | xfs_dquot_t *gdqp; | |
1074 | ||
1075 | ASSERT(dqp->q_nrefs > 0); | |
1076 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
0b1b213f CH |
1077 | |
1078 | trace_xfs_dqput(dqp); | |
1da177e4 LT |
1079 | |
1080 | if (dqp->q_nrefs != 1) { | |
1081 | dqp->q_nrefs--; | |
1082 | xfs_dqunlock(dqp); | |
1083 | return; | |
1084 | } | |
1085 | ||
1086 | /* | |
1087 | * drop the dqlock and acquire the freelist and dqlock | |
1088 | * in the right order; but try to get it out-of-order first | |
1089 | */ | |
1090 | if (! xfs_qm_freelist_lock_nowait(xfs_Gqm)) { | |
0b1b213f | 1091 | trace_xfs_dqput_wait(dqp); |
1da177e4 LT |
1092 | xfs_dqunlock(dqp); |
1093 | xfs_qm_freelist_lock(xfs_Gqm); | |
1094 | xfs_dqlock(dqp); | |
1095 | } | |
1096 | ||
1097 | while (1) { | |
1098 | gdqp = NULL; | |
1099 | ||
1100 | /* We can't depend on nrefs being == 1 here */ | |
1101 | if (--dqp->q_nrefs == 0) { | |
0b1b213f CH |
1102 | trace_xfs_dqput_free(dqp); |
1103 | ||
1da177e4 LT |
1104 | /* |
1105 | * insert at end of the freelist. | |
1106 | */ | |
1107 | XQM_FREELIST_INSERT(&(xfs_Gqm->qm_dqfreelist), dqp); | |
1108 | ||
1109 | /* | |
1110 | * If we just added a udquot to the freelist, then | |
1111 | * we want to release the gdquot reference that | |
1112 | * it (probably) has. Otherwise it'll keep the | |
1113 | * gdquot from getting reclaimed. | |
1114 | */ | |
1115 | if ((gdqp = dqp->q_gdquot)) { | |
1116 | /* | |
1117 | * Avoid a recursive dqput call | |
1118 | */ | |
1119 | xfs_dqlock(gdqp); | |
1120 | dqp->q_gdquot = NULL; | |
1121 | } | |
1122 | ||
1123 | /* xfs_qm_freelist_print(&(xfs_Gqm->qm_dqfreelist), | |
1124 | "@@@@@++ Free list (after append) @@@@@+"); | |
1125 | */ | |
1126 | } | |
1127 | xfs_dqunlock(dqp); | |
1128 | ||
1129 | /* | |
1130 | * If we had a group quota inside the user quota as a hint, | |
1131 | * release it now. | |
1132 | */ | |
1133 | if (! gdqp) | |
1134 | break; | |
1135 | dqp = gdqp; | |
1136 | } | |
1137 | xfs_qm_freelist_unlock(xfs_Gqm); | |
1138 | } | |
1139 | ||
1140 | /* | |
1141 | * Release a dquot. Flush it if dirty, then dqput() it. | |
1142 | * dquot must not be locked. | |
1143 | */ | |
1144 | void | |
1145 | xfs_qm_dqrele( | |
1146 | xfs_dquot_t *dqp) | |
1147 | { | |
7d095257 CH |
1148 | if (!dqp) |
1149 | return; | |
1150 | ||
0b1b213f | 1151 | trace_xfs_dqrele(dqp); |
1da177e4 LT |
1152 | |
1153 | xfs_dqlock(dqp); | |
1154 | /* | |
1155 | * We don't care to flush it if the dquot is dirty here. | |
1156 | * That will create stutters that we want to avoid. | |
1157 | * Instead we do a delayed write when we try to reclaim | |
1158 | * a dirty dquot. Also xfs_sync will take part of the burden... | |
1159 | */ | |
1160 | xfs_qm_dqput(dqp); | |
1161 | } | |
1162 | ||
1163 | ||
1164 | /* | |
1165 | * Write a modified dquot to disk. | |
1166 | * The dquot must be locked and the flush lock too taken by caller. | |
1167 | * The flush lock will not be unlocked until the dquot reaches the disk, | |
1168 | * but the dquot is free to be unlocked and modified by the caller | |
1169 | * in the interim. Dquot is still locked on return. This behavior is | |
1170 | * identical to that of inodes. | |
1171 | */ | |
1172 | int | |
1173 | xfs_qm_dqflush( | |
1174 | xfs_dquot_t *dqp, | |
1175 | uint flags) | |
1176 | { | |
1177 | xfs_mount_t *mp; | |
1178 | xfs_buf_t *bp; | |
1179 | xfs_disk_dquot_t *ddqp; | |
1180 | int error; | |
1da177e4 LT |
1181 | |
1182 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
e1f49cf2 | 1183 | ASSERT(!completion_done(&dqp->q_flush)); |
0b1b213f | 1184 | trace_xfs_dqflush(dqp); |
1da177e4 LT |
1185 | |
1186 | /* | |
2f8a3ce1 DC |
1187 | * If not dirty, or it's pinned and we are not supposed to |
1188 | * block, nada. | |
1da177e4 | 1189 | */ |
2f8a3ce1 | 1190 | if (!XFS_DQ_IS_DIRTY(dqp) || |
20026d92 | 1191 | (!(flags & SYNC_WAIT) && atomic_read(&dqp->q_pincount) > 0)) { |
1da177e4 | 1192 | xfs_dqfunlock(dqp); |
2f8a3ce1 | 1193 | return 0; |
1da177e4 | 1194 | } |
1da177e4 LT |
1195 | xfs_qm_dqunpin_wait(dqp); |
1196 | ||
1197 | /* | |
1198 | * This may have been unpinned because the filesystem is shutting | |
1199 | * down forcibly. If that's the case we must not write this dquot | |
1200 | * to disk, because the log record didn't make it to disk! | |
1201 | */ | |
1202 | if (XFS_FORCED_SHUTDOWN(dqp->q_mount)) { | |
1203 | dqp->dq_flags &= ~(XFS_DQ_DIRTY); | |
1204 | xfs_dqfunlock(dqp); | |
1205 | return XFS_ERROR(EIO); | |
1206 | } | |
1207 | ||
1208 | /* | |
1209 | * Get the buffer containing the on-disk dquot | |
1210 | * We don't need a transaction envelope because we know that the | |
1211 | * the ondisk-dquot has already been allocated for. | |
1212 | */ | |
1213 | if ((error = xfs_qm_dqtobp(NULL, dqp, &ddqp, &bp, XFS_QMOPT_DOWARN))) { | |
1da177e4 LT |
1214 | ASSERT(error != ENOENT); |
1215 | /* | |
1216 | * Quotas could have gotten turned off (ESRCH) | |
1217 | */ | |
1218 | xfs_dqfunlock(dqp); | |
1219 | return (error); | |
1220 | } | |
1221 | ||
1149d96a | 1222 | if (xfs_qm_dqcheck(&dqp->q_core, be32_to_cpu(ddqp->d_id), |
c8ad20ff | 1223 | 0, XFS_QMOPT_DOWARN, "dqflush (incore copy)")) { |
7d04a335 | 1224 | xfs_force_shutdown(dqp->q_mount, SHUTDOWN_CORRUPT_INCORE); |
1da177e4 LT |
1225 | return XFS_ERROR(EIO); |
1226 | } | |
1227 | ||
1228 | /* This is the only portion of data that needs to persist */ | |
1229 | memcpy(ddqp, &(dqp->q_core), sizeof(xfs_disk_dquot_t)); | |
1230 | ||
1231 | /* | |
1232 | * Clear the dirty field and remember the flush lsn for later use. | |
1233 | */ | |
1234 | dqp->dq_flags &= ~(XFS_DQ_DIRTY); | |
1235 | mp = dqp->q_mount; | |
1236 | ||
7b2e2a31 DC |
1237 | xfs_trans_ail_copy_lsn(mp->m_ail, &dqp->q_logitem.qli_flush_lsn, |
1238 | &dqp->q_logitem.qli_item.li_lsn); | |
1da177e4 LT |
1239 | |
1240 | /* | |
1241 | * Attach an iodone routine so that we can remove this dquot from the | |
1242 | * AIL and release the flush lock once the dquot is synced to disk. | |
1243 | */ | |
1244 | xfs_buf_attach_iodone(bp, (void(*)(xfs_buf_t *, xfs_log_item_t *)) | |
1245 | xfs_qm_dqflush_done, &(dqp->q_logitem.qli_item)); | |
1246 | /* | |
1247 | * If the buffer is pinned then push on the log so we won't | |
1248 | * get stuck waiting in the write for too long. | |
1249 | */ | |
1250 | if (XFS_BUF_ISPINNED(bp)) { | |
0b1b213f | 1251 | trace_xfs_dqflush_force(dqp); |
a14a348b | 1252 | xfs_log_force(mp, 0); |
1da177e4 LT |
1253 | } |
1254 | ||
20026d92 | 1255 | if (flags & SYNC_WAIT) |
1da177e4 | 1256 | error = xfs_bwrite(mp, bp); |
20026d92 DC |
1257 | else |
1258 | xfs_bdwrite(mp, bp); | |
0b1b213f CH |
1259 | |
1260 | trace_xfs_dqflush_done(dqp); | |
1261 | ||
1da177e4 LT |
1262 | /* |
1263 | * dqp is still locked, but caller is free to unlock it now. | |
1264 | */ | |
20026d92 | 1265 | return error; |
1da177e4 LT |
1266 | |
1267 | } | |
1268 | ||
1269 | /* | |
1270 | * This is the dquot flushing I/O completion routine. It is called | |
1271 | * from interrupt level when the buffer containing the dquot is | |
1272 | * flushed to disk. It is responsible for removing the dquot logitem | |
1273 | * from the AIL if it has not been re-logged, and unlocking the dquot's | |
1274 | * flush lock. This behavior is very similar to that of inodes.. | |
1275 | */ | |
1276 | /*ARGSUSED*/ | |
1277 | STATIC void | |
1278 | xfs_qm_dqflush_done( | |
1279 | xfs_buf_t *bp, | |
1280 | xfs_dq_logitem_t *qip) | |
1281 | { | |
1282 | xfs_dquot_t *dqp; | |
783a2f65 | 1283 | struct xfs_ail *ailp; |
1da177e4 LT |
1284 | |
1285 | dqp = qip->qli_dquot; | |
783a2f65 | 1286 | ailp = qip->qli_item.li_ailp; |
1da177e4 LT |
1287 | |
1288 | /* | |
1289 | * We only want to pull the item from the AIL if its | |
1290 | * location in the log has not changed since we started the flush. | |
1291 | * Thus, we only bother if the dquot's lsn has | |
1292 | * not changed. First we check the lsn outside the lock | |
1293 | * since it's cheaper, and then we recheck while | |
1294 | * holding the lock before removing the dquot from the AIL. | |
1295 | */ | |
1296 | if ((qip->qli_item.li_flags & XFS_LI_IN_AIL) && | |
1297 | qip->qli_item.li_lsn == qip->qli_flush_lsn) { | |
1298 | ||
783a2f65 DC |
1299 | /* xfs_trans_ail_delete() drops the AIL lock. */ |
1300 | spin_lock(&ailp->xa_lock); | |
1da177e4 | 1301 | if (qip->qli_item.li_lsn == qip->qli_flush_lsn) |
783a2f65 | 1302 | xfs_trans_ail_delete(ailp, (xfs_log_item_t*)qip); |
1da177e4 | 1303 | else |
783a2f65 | 1304 | spin_unlock(&ailp->xa_lock); |
1da177e4 LT |
1305 | } |
1306 | ||
1307 | /* | |
1308 | * Release the dq's flush lock since we're done with it. | |
1309 | */ | |
1310 | xfs_dqfunlock(dqp); | |
1311 | } | |
1312 | ||
1da177e4 LT |
1313 | int |
1314 | xfs_qm_dqlock_nowait( | |
1315 | xfs_dquot_t *dqp) | |
1316 | { | |
e1f49cf2 | 1317 | return mutex_trylock(&dqp->q_qlock); |
1da177e4 LT |
1318 | } |
1319 | ||
1320 | void | |
1321 | xfs_dqlock( | |
1322 | xfs_dquot_t *dqp) | |
1323 | { | |
e1f49cf2 | 1324 | mutex_lock(&dqp->q_qlock); |
1da177e4 LT |
1325 | } |
1326 | ||
1327 | void | |
1328 | xfs_dqunlock( | |
1329 | xfs_dquot_t *dqp) | |
1330 | { | |
1331 | mutex_unlock(&(dqp->q_qlock)); | |
1332 | if (dqp->q_logitem.qli_dquot == dqp) { | |
1333 | /* Once was dqp->q_mount, but might just have been cleared */ | |
783a2f65 | 1334 | xfs_trans_unlocked_item(dqp->q_logitem.qli_item.li_ailp, |
1da177e4 LT |
1335 | (xfs_log_item_t*)&(dqp->q_logitem)); |
1336 | } | |
1337 | } | |
1338 | ||
1339 | ||
1340 | void | |
1341 | xfs_dqunlock_nonotify( | |
1342 | xfs_dquot_t *dqp) | |
1343 | { | |
1344 | mutex_unlock(&(dqp->q_qlock)); | |
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( | |
1355 | xfs_dquot_t *d1, | |
1356 | xfs_dquot_t *d2) | |
1357 | { | |
1358 | if (d1 && d2) { | |
1359 | ASSERT(d1 != d2); | |
1149d96a CH |
1360 | if (be32_to_cpu(d1->q_core.d_id) > |
1361 | be32_to_cpu(d2->q_core.d_id)) { | |
5bb87a33 CH |
1362 | mutex_lock(&d2->q_qlock); |
1363 | mutex_lock_nested(&d1->q_qlock, XFS_QLOCK_NESTED); | |
1da177e4 | 1364 | } else { |
5bb87a33 CH |
1365 | mutex_lock(&d1->q_qlock); |
1366 | mutex_lock_nested(&d2->q_qlock, XFS_QLOCK_NESTED); | |
1da177e4 | 1367 | } |
5bb87a33 CH |
1368 | } else if (d1) { |
1369 | mutex_lock(&d1->q_qlock); | |
1370 | } else if (d2) { | |
1371 | mutex_lock(&d2->q_qlock); | |
1da177e4 LT |
1372 | } |
1373 | } | |
1374 | ||
1375 | ||
1376 | /* | |
1377 | * Take a dquot out of the mount's dqlist as well as the hashlist. | |
1378 | * This is called via unmount as well as quotaoff, and the purge | |
1379 | * will always succeed unless there are soft (temp) references | |
1380 | * outstanding. | |
1381 | * | |
1382 | * This returns 0 if it was purged, 1 if it wasn't. It's not an error code | |
1383 | * that we're returning! XXXsup - not cool. | |
1384 | */ | |
1385 | /* ARGSUSED */ | |
1386 | int | |
1387 | xfs_qm_dqpurge( | |
4f0e8a98 | 1388 | xfs_dquot_t *dqp) |
1da177e4 LT |
1389 | { |
1390 | xfs_dqhash_t *thishash; | |
3c56836f | 1391 | xfs_mount_t *mp = dqp->q_mount; |
1da177e4 | 1392 | |
3a25404b | 1393 | ASSERT(mutex_is_locked(&mp->m_quotainfo->qi_dqlist_lock)); |
c9a192dc | 1394 | ASSERT(mutex_is_locked(&dqp->q_hash->qh_lock)); |
1da177e4 LT |
1395 | |
1396 | xfs_dqlock(dqp); | |
1397 | /* | |
1398 | * We really can't afford to purge a dquot that is | |
1399 | * referenced, because these are hard refs. | |
1400 | * It shouldn't happen in general because we went thru _all_ inodes in | |
1401 | * dqrele_all_inodes before calling this and didn't let the mountlock go. | |
1402 | * However it is possible that we have dquots with temporary | |
1403 | * references that are not attached to an inode. e.g. see xfs_setattr(). | |
1404 | */ | |
1405 | if (dqp->q_nrefs != 0) { | |
1406 | xfs_dqunlock(dqp); | |
c9a192dc | 1407 | mutex_unlock(&dqp->q_hash->qh_lock); |
1da177e4 LT |
1408 | return (1); |
1409 | } | |
1410 | ||
1411 | ASSERT(XFS_DQ_IS_ON_FREELIST(dqp)); | |
1412 | ||
1413 | /* | |
1414 | * If we're turning off quotas, we have to make sure that, for | |
1415 | * example, we don't delete quota disk blocks while dquots are | |
1416 | * in the process of getting written to those disk blocks. | |
1417 | * This dquot might well be on AIL, and we can't leave it there | |
1418 | * if we're turning off quotas. Basically, we need this flush | |
1419 | * lock, and are willing to block on it. | |
1420 | */ | |
e1f49cf2 | 1421 | if (!xfs_dqflock_nowait(dqp)) { |
1da177e4 LT |
1422 | /* |
1423 | * Block on the flush lock after nudging dquot buffer, | |
1424 | * if it is incore. | |
1425 | */ | |
1426 | xfs_qm_dqflock_pushbuf_wait(dqp); | |
1427 | } | |
1428 | ||
1429 | /* | |
1430 | * XXXIf we're turning this type of quotas off, we don't care | |
1431 | * about the dirty metadata sitting in this dquot. OTOH, if | |
1432 | * we're unmounting, we do care, so we flush it and wait. | |
1433 | */ | |
1434 | if (XFS_DQ_IS_DIRTY(dqp)) { | |
3c56836f | 1435 | int error; |
0b1b213f | 1436 | |
1da177e4 LT |
1437 | /* dqflush unlocks dqflock */ |
1438 | /* | |
1439 | * Given that dqpurge is a very rare occurrence, it is OK | |
1440 | * that we're holding the hashlist and mplist locks | |
1441 | * across the disk write. But, ... XXXsup | |
1442 | * | |
1443 | * We don't care about getting disk errors here. We need | |
1444 | * to purge this dquot anyway, so we go ahead regardless. | |
1445 | */ | |
20026d92 | 1446 | error = xfs_qm_dqflush(dqp, SYNC_WAIT); |
3c56836f DC |
1447 | if (error) |
1448 | xfs_fs_cmn_err(CE_WARN, mp, | |
1449 | "xfs_qm_dqpurge: dquot %p flush failed", dqp); | |
1da177e4 LT |
1450 | xfs_dqflock(dqp); |
1451 | } | |
bc3048e3 | 1452 | ASSERT(atomic_read(&dqp->q_pincount) == 0); |
1da177e4 LT |
1453 | ASSERT(XFS_FORCED_SHUTDOWN(mp) || |
1454 | !(dqp->q_logitem.qli_item.li_flags & XFS_LI_IN_AIL)); | |
1455 | ||
1456 | thishash = dqp->q_hash; | |
1457 | XQM_HASHLIST_REMOVE(thishash, dqp); | |
3a25404b DC |
1458 | list_del_init(&dqp->q_mplist); |
1459 | mp->m_quotainfo->qi_dqreclaims++; | |
1460 | mp->m_quotainfo->qi_dquots--; | |
1da177e4 LT |
1461 | /* |
1462 | * XXX Move this to the front of the freelist, if we can get the | |
1463 | * freelist lock. | |
1464 | */ | |
1465 | ASSERT(XFS_DQ_IS_ON_FREELIST(dqp)); | |
1466 | ||
1467 | dqp->q_mount = NULL; | |
1468 | dqp->q_hash = NULL; | |
1469 | dqp->dq_flags = XFS_DQ_INACTIVE; | |
1470 | memset(&dqp->q_core, 0, sizeof(dqp->q_core)); | |
1471 | xfs_dqfunlock(dqp); | |
1472 | xfs_dqunlock(dqp); | |
c9a192dc | 1473 | mutex_unlock(&thishash->qh_lock); |
1da177e4 LT |
1474 | return (0); |
1475 | } | |
1476 | ||
1477 | ||
1478 | #ifdef QUOTADEBUG | |
1479 | void | |
1480 | xfs_qm_dqprint(xfs_dquot_t *dqp) | |
1481 | { | |
1482 | cmn_err(CE_DEBUG, "-----------KERNEL DQUOT----------------"); | |
1483 | cmn_err(CE_DEBUG, "---- dquotID = %d", | |
1149d96a | 1484 | (int)be32_to_cpu(dqp->q_core.d_id)); |
c8ad20ff | 1485 | cmn_err(CE_DEBUG, "---- type = %s", DQFLAGTO_TYPESTR(dqp)); |
1da177e4 LT |
1486 | cmn_err(CE_DEBUG, "---- fs = 0x%p", dqp->q_mount); |
1487 | cmn_err(CE_DEBUG, "---- blkno = 0x%x", (int) dqp->q_blkno); | |
1488 | cmn_err(CE_DEBUG, "---- boffset = 0x%x", (int) dqp->q_bufoffset); | |
1489 | cmn_err(CE_DEBUG, "---- blkhlimit = %Lu (0x%x)", | |
1149d96a CH |
1490 | be64_to_cpu(dqp->q_core.d_blk_hardlimit), |
1491 | (int)be64_to_cpu(dqp->q_core.d_blk_hardlimit)); | |
1da177e4 | 1492 | cmn_err(CE_DEBUG, "---- blkslimit = %Lu (0x%x)", |
1149d96a CH |
1493 | be64_to_cpu(dqp->q_core.d_blk_softlimit), |
1494 | (int)be64_to_cpu(dqp->q_core.d_blk_softlimit)); | |
1da177e4 | 1495 | cmn_err(CE_DEBUG, "---- inohlimit = %Lu (0x%x)", |
1149d96a CH |
1496 | be64_to_cpu(dqp->q_core.d_ino_hardlimit), |
1497 | (int)be64_to_cpu(dqp->q_core.d_ino_hardlimit)); | |
1da177e4 | 1498 | cmn_err(CE_DEBUG, "---- inoslimit = %Lu (0x%x)", |
1149d96a CH |
1499 | be64_to_cpu(dqp->q_core.d_ino_softlimit), |
1500 | (int)be64_to_cpu(dqp->q_core.d_ino_softlimit)); | |
1da177e4 | 1501 | cmn_err(CE_DEBUG, "---- bcount = %Lu (0x%x)", |
1149d96a CH |
1502 | be64_to_cpu(dqp->q_core.d_bcount), |
1503 | (int)be64_to_cpu(dqp->q_core.d_bcount)); | |
1da177e4 | 1504 | cmn_err(CE_DEBUG, "---- icount = %Lu (0x%x)", |
1149d96a CH |
1505 | be64_to_cpu(dqp->q_core.d_icount), |
1506 | (int)be64_to_cpu(dqp->q_core.d_icount)); | |
1da177e4 | 1507 | cmn_err(CE_DEBUG, "---- btimer = %d", |
1149d96a | 1508 | (int)be32_to_cpu(dqp->q_core.d_btimer)); |
1da177e4 | 1509 | cmn_err(CE_DEBUG, "---- itimer = %d", |
1149d96a | 1510 | (int)be32_to_cpu(dqp->q_core.d_itimer)); |
1da177e4 LT |
1511 | cmn_err(CE_DEBUG, "---------------------------"); |
1512 | } | |
1513 | #endif | |
1514 | ||
1515 | /* | |
1516 | * Give the buffer a little push if it is incore and | |
1517 | * wait on the flush lock. | |
1518 | */ | |
1519 | void | |
1520 | xfs_qm_dqflock_pushbuf_wait( | |
1521 | xfs_dquot_t *dqp) | |
1522 | { | |
1523 | xfs_buf_t *bp; | |
1524 | ||
1525 | /* | |
1526 | * Check to see if the dquot has been flushed delayed | |
1527 | * write. If so, grab its buffer and send it | |
1528 | * out immediately. We'll be able to acquire | |
1529 | * the flush lock when the I/O completes. | |
1530 | */ | |
1531 | bp = xfs_incore(dqp->q_mount->m_ddev_targp, dqp->q_blkno, | |
0cadda1c | 1532 | XFS_QI_DQCHUNKLEN(dqp->q_mount), XBF_TRYLOCK); |
7d6a7bde DC |
1533 | if (!bp) |
1534 | goto out_lock; | |
1535 | ||
1536 | if (XFS_BUF_ISDELAYWRITE(bp)) { | |
1537 | if (XFS_BUF_ISPINNED(bp)) | |
1538 | xfs_log_force(dqp->q_mount, 0); | |
1539 | xfs_buf_delwri_promote(bp); | |
1540 | wake_up_process(bp->b_target->bt_task); | |
1da177e4 | 1541 | } |
7d6a7bde DC |
1542 | xfs_buf_relse(bp); |
1543 | out_lock: | |
1da177e4 LT |
1544 | xfs_dqflock(dqp); |
1545 | } |