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of: MSI: Simplify irqdomain lookup
[linux/fpc-iii.git] / fs / xfs / xfs_trans_dquot.c
blobce78534a047eebe9a1b86cec00f7f4b3f396489b
1 /*
2 * Copyright (c) 2000-2002 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
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
7 * published by the Free Software Foundation.
8 *
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.
13 *
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
17 */
18 #include "xfs.h"
19 #include "xfs_fs.h"
20 #include "xfs_shared.h"
21 #include "xfs_format.h"
22 #include "xfs_log_format.h"
23 #include "xfs_trans_resv.h"
24 #include "xfs_mount.h"
25 #include "xfs_inode.h"
26 #include "xfs_error.h"
27 #include "xfs_trans.h"
28 #include "xfs_trans_priv.h"
29 #include "xfs_quota.h"
30 #include "xfs_qm.h"
31
32 STATIC void xfs_trans_alloc_dqinfo(xfs_trans_t *);
33
34 /*
35 * Add the locked dquot to the transaction.
36 * The dquot must be locked, and it cannot be associated with any
37 * transaction.
38 */
39 void
40 xfs_trans_dqjoin(
41 xfs_trans_t *tp,
42 xfs_dquot_t *dqp)
43 {
44 ASSERT(dqp->q_transp != tp);
45 ASSERT(XFS_DQ_IS_LOCKED(dqp));
46 ASSERT(dqp->q_logitem.qli_dquot == dqp);
47
48 /*
49 * Get a log_item_desc to point at the new item.
50 */
51 xfs_trans_add_item(tp, &dqp->q_logitem.qli_item);
52
53 /*
54 * Initialize d_transp so we can later determine if this dquot is
55 * associated with this transaction.
56 */
57 dqp->q_transp = tp;
58 }
59
60
61 /*
62 * This is called to mark the dquot as needing
63 * to be logged when the transaction is committed. The dquot must
64 * already be associated with the given transaction.
65 * Note that it marks the entire transaction as dirty. In the ordinary
66 * case, this gets called via xfs_trans_commit, after the transaction
67 * is already dirty. However, there's nothing stop this from getting
68 * called directly, as done by xfs_qm_scall_setqlim. Hence, the TRANS_DIRTY
69 * flag.
70 */
71 void
72 xfs_trans_log_dquot(
73 xfs_trans_t *tp,
74 xfs_dquot_t *dqp)
75 {
76 ASSERT(dqp->q_transp == tp);
77 ASSERT(XFS_DQ_IS_LOCKED(dqp));
78
79 tp->t_flags |= XFS_TRANS_DIRTY;
80 dqp->q_logitem.qli_item.li_desc->lid_flags |= XFS_LID_DIRTY;
81 }
82
83 /*
84 * Carry forward whatever is left of the quota blk reservation to
85 * the spanky new transaction
86 */
87 void
88 xfs_trans_dup_dqinfo(
89 xfs_trans_t *otp,
90 xfs_trans_t *ntp)
91 {
92 xfs_dqtrx_t *oq, *nq;
93 int i, j;
94 xfs_dqtrx_t *oqa, *nqa;
95 ulong blk_res_used;
96
97 if (!otp->t_dqinfo)
98 return;
99
100 xfs_trans_alloc_dqinfo(ntp);
101
102 /*
103 * Because the quota blk reservation is carried forward,
104 * it is also necessary to carry forward the DQ_DIRTY flag.
105 */
106 if (otp->t_flags & XFS_TRANS_DQ_DIRTY)
107 ntp->t_flags |= XFS_TRANS_DQ_DIRTY;
108
109 for (j = 0; j < XFS_QM_TRANS_DQTYPES; j++) {
110 oqa = otp->t_dqinfo->dqs[j];
111 nqa = ntp->t_dqinfo->dqs[j];
112 for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
113 blk_res_used = 0;
114
115 if (oqa[i].qt_dquot == NULL)
116 break;
117 oq = &oqa[i];
118 nq = &nqa[i];
119
120 if (oq->qt_blk_res && oq->qt_bcount_delta > 0)
121 blk_res_used = oq->qt_bcount_delta;
122
123 nq->qt_dquot = oq->qt_dquot;
124 nq->qt_bcount_delta = nq->qt_icount_delta = 0;
125 nq->qt_rtbcount_delta = 0;
126
127 /*
128 * Transfer whatever is left of the reservations.
129 */
130 nq->qt_blk_res = oq->qt_blk_res - blk_res_used;
131 oq->qt_blk_res = blk_res_used;
132
133 nq->qt_rtblk_res = oq->qt_rtblk_res -
134 oq->qt_rtblk_res_used;
135 oq->qt_rtblk_res = oq->qt_rtblk_res_used;
136
137 nq->qt_ino_res = oq->qt_ino_res - oq->qt_ino_res_used;
138 oq->qt_ino_res = oq->qt_ino_res_used;
139
140 }
141 }
142 }
143
144 /*
145 * Wrap around mod_dquot to account for both user and group quotas.
146 */
147 void
148 xfs_trans_mod_dquot_byino(
149 xfs_trans_t *tp,
150 xfs_inode_t *ip,
151 uint field,
152 long delta)
153 {
154 xfs_mount_t *mp = tp->t_mountp;
155
156 if (!XFS_IS_QUOTA_RUNNING(mp) ||
157 !XFS_IS_QUOTA_ON(mp) ||
158 xfs_is_quota_inode(&mp->m_sb, ip->i_ino))
159 return;
160
161 if (tp->t_dqinfo == NULL)
162 xfs_trans_alloc_dqinfo(tp);
163
164 if (XFS_IS_UQUOTA_ON(mp) && ip->i_udquot)
165 (void) xfs_trans_mod_dquot(tp, ip->i_udquot, field, delta);
166 if (XFS_IS_GQUOTA_ON(mp) && ip->i_gdquot)
167 (void) xfs_trans_mod_dquot(tp, ip->i_gdquot, field, delta);
168 if (XFS_IS_PQUOTA_ON(mp) && ip->i_pdquot)
169 (void) xfs_trans_mod_dquot(tp, ip->i_pdquot, field, delta);
170 }
171
172 STATIC struct xfs_dqtrx *
173 xfs_trans_get_dqtrx(
174 struct xfs_trans *tp,
175 struct xfs_dquot *dqp)
176 {
177 int i;
178 struct xfs_dqtrx *qa;
179
180 if (XFS_QM_ISUDQ(dqp))
181 qa = tp->t_dqinfo->dqs[XFS_QM_TRANS_USR];
182 else if (XFS_QM_ISGDQ(dqp))
183 qa = tp->t_dqinfo->dqs[XFS_QM_TRANS_GRP];
184 else if (XFS_QM_ISPDQ(dqp))
185 qa = tp->t_dqinfo->dqs[XFS_QM_TRANS_PRJ];
186 else
187 return NULL;
188
189 for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
190 if (qa[i].qt_dquot == NULL ||
191 qa[i].qt_dquot == dqp)
192 return &qa[i];
193 }
194
195 return NULL;
196 }
197
198 /*
199 * Make the changes in the transaction structure.
200 * The moral equivalent to xfs_trans_mod_sb().
201 * We don't touch any fields in the dquot, so we don't care
202 * if it's locked or not (most of the time it won't be).
203 */
204 void
205 xfs_trans_mod_dquot(
206 xfs_trans_t *tp,
207 xfs_dquot_t *dqp,
208 uint field,
209 long delta)
210 {
211 xfs_dqtrx_t *qtrx;
212
213 ASSERT(tp);
214 ASSERT(XFS_IS_QUOTA_RUNNING(tp->t_mountp));
215 qtrx = NULL;
216
217 if (tp->t_dqinfo == NULL)
218 xfs_trans_alloc_dqinfo(tp);
219 /*
220 * Find either the first free slot or the slot that belongs
221 * to this dquot.
222 */
223 qtrx = xfs_trans_get_dqtrx(tp, dqp);
224 ASSERT(qtrx);
225 if (qtrx->qt_dquot == NULL)
226 qtrx->qt_dquot = dqp;
227
228 switch (field) {
229
230 /*
231 * regular disk blk reservation
232 */
233 case XFS_TRANS_DQ_RES_BLKS:
234 qtrx->qt_blk_res += (ulong)delta;
235 break;
236
237 /*
238 * inode reservation
239 */
240 case XFS_TRANS_DQ_RES_INOS:
241 qtrx->qt_ino_res += (ulong)delta;
242 break;
243
244 /*
245 * disk blocks used.
246 */
247 case XFS_TRANS_DQ_BCOUNT:
248 qtrx->qt_bcount_delta += delta;
249 break;
250
251 case XFS_TRANS_DQ_DELBCOUNT:
252 qtrx->qt_delbcnt_delta += delta;
253 break;
254
255 /*
256 * Inode Count
257 */
258 case XFS_TRANS_DQ_ICOUNT:
259 if (qtrx->qt_ino_res && delta > 0) {
260 qtrx->qt_ino_res_used += (ulong)delta;
261 ASSERT(qtrx->qt_ino_res >= qtrx->qt_ino_res_used);
262 }
263 qtrx->qt_icount_delta += delta;
264 break;
265
266 /*
267 * rtblk reservation
268 */
269 case XFS_TRANS_DQ_RES_RTBLKS:
270 qtrx->qt_rtblk_res += (ulong)delta;
271 break;
272
273 /*
274 * rtblk count
275 */
276 case XFS_TRANS_DQ_RTBCOUNT:
277 if (qtrx->qt_rtblk_res && delta > 0) {
278 qtrx->qt_rtblk_res_used += (ulong)delta;
279 ASSERT(qtrx->qt_rtblk_res >= qtrx->qt_rtblk_res_used);
280 }
281 qtrx->qt_rtbcount_delta += delta;
282 break;
283
284 case XFS_TRANS_DQ_DELRTBCOUNT:
285 qtrx->qt_delrtb_delta += delta;
286 break;
287
288 default:
289 ASSERT(0);
290 }
291 tp->t_flags |= XFS_TRANS_DQ_DIRTY;
292 }
293
294
295 /*
296 * Given an array of dqtrx structures, lock all the dquots associated and join
297 * them to the transaction, provided they have been modified. We know that the
298 * highest number of dquots of one type - usr, grp and prj - involved in a
299 * transaction is 3 so we don't need to make this very generic.
300 */
301 STATIC void
302 xfs_trans_dqlockedjoin(
303 xfs_trans_t *tp,
304 xfs_dqtrx_t *q)
305 {
306 ASSERT(q[0].qt_dquot != NULL);
307 if (q[1].qt_dquot == NULL) {
308 xfs_dqlock(q[0].qt_dquot);
309 xfs_trans_dqjoin(tp, q[0].qt_dquot);
310 } else {
311 ASSERT(XFS_QM_TRANS_MAXDQS == 2);
312 xfs_dqlock2(q[0].qt_dquot, q[1].qt_dquot);
313 xfs_trans_dqjoin(tp, q[0].qt_dquot);
314 xfs_trans_dqjoin(tp, q[1].qt_dquot);
315 }
316 }
317
318
319 /*
320 * Called by xfs_trans_commit() and similar in spirit to
321 * xfs_trans_apply_sb_deltas().
322 * Go thru all the dquots belonging to this transaction and modify the
323 * INCORE dquot to reflect the actual usages.
324 * Unreserve just the reservations done by this transaction.
325 * dquot is still left locked at exit.
326 */
327 void
328 xfs_trans_apply_dquot_deltas(
329 struct xfs_trans *tp)
330 {
331 int i, j;
332 struct xfs_dquot *dqp;
333 struct xfs_dqtrx *qtrx, *qa;
334 struct xfs_disk_dquot *d;
335 long totalbdelta;
336 long totalrtbdelta;
337
338 if (!(tp->t_flags & XFS_TRANS_DQ_DIRTY))
339 return;
340
341 ASSERT(tp->t_dqinfo);
342 for (j = 0; j < XFS_QM_TRANS_DQTYPES; j++) {
343 qa = tp->t_dqinfo->dqs[j];
344 if (qa[0].qt_dquot == NULL)
345 continue;
346
347 /*
348 * Lock all of the dquots and join them to the transaction.
349 */
350 xfs_trans_dqlockedjoin(tp, qa);
351
352 for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
353 qtrx = &qa[i];
354 /*
355 * The array of dquots is filled
356 * sequentially, not sparsely.
357 */
358 if ((dqp = qtrx->qt_dquot) == NULL)
359 break;
360
361 ASSERT(XFS_DQ_IS_LOCKED(dqp));
362 ASSERT(dqp->q_transp == tp);
363
364 /*
365 * adjust the actual number of blocks used
366 */
367 d = &dqp->q_core;
368
369 /*
370 * The issue here is - sometimes we don't make a blkquota
371 * reservation intentionally to be fair to users
372 * (when the amount is small). On the other hand,
373 * delayed allocs do make reservations, but that's
374 * outside of a transaction, so we have no
375 * idea how much was really reserved.
376 * So, here we've accumulated delayed allocation blks and
377 * non-delay blks. The assumption is that the
378 * delayed ones are always reserved (outside of a
379 * transaction), and the others may or may not have
380 * quota reservations.
381 */
382 totalbdelta = qtrx->qt_bcount_delta +
383 qtrx->qt_delbcnt_delta;
384 totalrtbdelta = qtrx->qt_rtbcount_delta +
385 qtrx->qt_delrtb_delta;
386 #ifdef DEBUG
387 if (totalbdelta < 0)
388 ASSERT(be64_to_cpu(d->d_bcount) >=
389 -totalbdelta);
390
391 if (totalrtbdelta < 0)
392 ASSERT(be64_to_cpu(d->d_rtbcount) >=
393 -totalrtbdelta);
394
395 if (qtrx->qt_icount_delta < 0)
396 ASSERT(be64_to_cpu(d->d_icount) >=
397 -qtrx->qt_icount_delta);
398 #endif
399 if (totalbdelta)
400 be64_add_cpu(&d->d_bcount, (xfs_qcnt_t)totalbdelta);
401
402 if (qtrx->qt_icount_delta)
403 be64_add_cpu(&d->d_icount, (xfs_qcnt_t)qtrx->qt_icount_delta);
404
405 if (totalrtbdelta)
406 be64_add_cpu(&d->d_rtbcount, (xfs_qcnt_t)totalrtbdelta);
407
408 /*
409 * Get any default limits in use.
410 * Start/reset the timer(s) if needed.
411 */
412 if (d->d_id) {
413 xfs_qm_adjust_dqlimits(tp->t_mountp, dqp);
414 xfs_qm_adjust_dqtimers(tp->t_mountp, d);
415 }
416
417 dqp->dq_flags |= XFS_DQ_DIRTY;
418 /*
419 * add this to the list of items to get logged
420 */
421 xfs_trans_log_dquot(tp, dqp);
422 /*
423 * Take off what's left of the original reservation.
424 * In case of delayed allocations, there's no
425 * reservation that a transaction structure knows of.
426 */
427 if (qtrx->qt_blk_res != 0) {
428 ulong blk_res_used = 0;
429
430 if (qtrx->qt_bcount_delta > 0)
431 blk_res_used = qtrx->qt_bcount_delta;
432
433 if (qtrx->qt_blk_res != blk_res_used) {
434 if (qtrx->qt_blk_res > blk_res_used)
435 dqp->q_res_bcount -= (xfs_qcnt_t)
436 (qtrx->qt_blk_res -
437 blk_res_used);
438 else
439 dqp->q_res_bcount -= (xfs_qcnt_t)
440 (blk_res_used -
441 qtrx->qt_blk_res);
442 }
443 } else {
444 /*
445 * These blks were never reserved, either inside
446 * a transaction or outside one (in a delayed
447 * allocation). Also, this isn't always a
448 * negative number since we sometimes
449 * deliberately skip quota reservations.
450 */
451 if (qtrx->qt_bcount_delta) {
452 dqp->q_res_bcount +=
453 (xfs_qcnt_t)qtrx->qt_bcount_delta;
454 }
455 }
456 /*
457 * Adjust the RT reservation.
458 */
459 if (qtrx->qt_rtblk_res != 0) {
460 if (qtrx->qt_rtblk_res != qtrx->qt_rtblk_res_used) {
461 if (qtrx->qt_rtblk_res >
462 qtrx->qt_rtblk_res_used)
463 dqp->q_res_rtbcount -= (xfs_qcnt_t)
464 (qtrx->qt_rtblk_res -
465 qtrx->qt_rtblk_res_used);
466 else
467 dqp->q_res_rtbcount -= (xfs_qcnt_t)
468 (qtrx->qt_rtblk_res_used -
469 qtrx->qt_rtblk_res);
470 }
471 } else {
472 if (qtrx->qt_rtbcount_delta)
473 dqp->q_res_rtbcount +=
474 (xfs_qcnt_t)qtrx->qt_rtbcount_delta;
475 }
476
477 /*
478 * Adjust the inode reservation.
479 */
480 if (qtrx->qt_ino_res != 0) {
481 ASSERT(qtrx->qt_ino_res >=
482 qtrx->qt_ino_res_used);
483 if (qtrx->qt_ino_res > qtrx->qt_ino_res_used)
484 dqp->q_res_icount -= (xfs_qcnt_t)
485 (qtrx->qt_ino_res -
486 qtrx->qt_ino_res_used);
487 } else {
488 if (qtrx->qt_icount_delta)
489 dqp->q_res_icount +=
490 (xfs_qcnt_t)qtrx->qt_icount_delta;
491 }
492
493 ASSERT(dqp->q_res_bcount >=
494 be64_to_cpu(dqp->q_core.d_bcount));
495 ASSERT(dqp->q_res_icount >=
496 be64_to_cpu(dqp->q_core.d_icount));
497 ASSERT(dqp->q_res_rtbcount >=
498 be64_to_cpu(dqp->q_core.d_rtbcount));
499 }
500 }
501 }
502
503 /*
504 * Release the reservations, and adjust the dquots accordingly.
505 * This is called only when the transaction is being aborted. If by
506 * any chance we have done dquot modifications incore (ie. deltas) already,
507 * we simply throw those away, since that's the expected behavior
508 * when a transaction is curtailed without a commit.
509 */
510 void
511 xfs_trans_unreserve_and_mod_dquots(
512 xfs_trans_t *tp)
513 {
514 int i, j;
515 xfs_dquot_t *dqp;
516 xfs_dqtrx_t *qtrx, *qa;
517 bool locked;
518
519 if (!tp->t_dqinfo || !(tp->t_flags & XFS_TRANS_DQ_DIRTY))
520 return;
521
522 for (j = 0; j < XFS_QM_TRANS_DQTYPES; j++) {
523 qa = tp->t_dqinfo->dqs[j];
524
525 for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
526 qtrx = &qa[i];
527 /*
528 * We assume that the array of dquots is filled
529 * sequentially, not sparsely.
530 */
531 if ((dqp = qtrx->qt_dquot) == NULL)
532 break;
533 /*
534 * Unreserve the original reservation. We don't care
535 * about the number of blocks used field, or deltas.
536 * Also we don't bother to zero the fields.
537 */
538 locked = false;
539 if (qtrx->qt_blk_res) {
540 xfs_dqlock(dqp);
541 locked = true;
542 dqp->q_res_bcount -=
543 (xfs_qcnt_t)qtrx->qt_blk_res;
544 }
545 if (qtrx->qt_ino_res) {
546 if (!locked) {
547 xfs_dqlock(dqp);
548 locked = true;
549 }
550 dqp->q_res_icount -=
551 (xfs_qcnt_t)qtrx->qt_ino_res;
552 }
553
554 if (qtrx->qt_rtblk_res) {
555 if (!locked) {
556 xfs_dqlock(dqp);
557 locked = true;
558 }
559 dqp->q_res_rtbcount -=
560 (xfs_qcnt_t)qtrx->qt_rtblk_res;
561 }
562 if (locked)
563 xfs_dqunlock(dqp);
564
565 }
566 }
567 }
568
569 STATIC void
570 xfs_quota_warn(
571 struct xfs_mount *mp,
572 struct xfs_dquot *dqp,
573 int type)
574 {
575 /* no warnings for project quotas - we just return ENOSPC later */
576 if (dqp->dq_flags & XFS_DQ_PROJ)
577 return;
578 quota_send_warning(make_kqid(&init_user_ns,
579 (dqp->dq_flags & XFS_DQ_USER) ?
580 USRQUOTA : GRPQUOTA,
581 be32_to_cpu(dqp->q_core.d_id)),
582 mp->m_super->s_dev, type);
583 }
584
585 /*
586 * This reserves disk blocks and inodes against a dquot.
587 * Flags indicate if the dquot is to be locked here and also
588 * if the blk reservation is for RT or regular blocks.
589 * Sending in XFS_QMOPT_FORCE_RES flag skips the quota check.
590 */
591 STATIC int
592 xfs_trans_dqresv(
593 xfs_trans_t *tp,
594 xfs_mount_t *mp,
595 xfs_dquot_t *dqp,
596 long nblks,
597 long ninos,
598 uint flags)
599 {
600 xfs_qcnt_t hardlimit;
601 xfs_qcnt_t softlimit;
602 time_t timer;
603 xfs_qwarncnt_t warns;
604 xfs_qwarncnt_t warnlimit;
605 xfs_qcnt_t total_count;
606 xfs_qcnt_t *resbcountp;
607 xfs_quotainfo_t *q = mp->m_quotainfo;
608
609
610 xfs_dqlock(dqp);
611
612 if (flags & XFS_TRANS_DQ_RES_BLKS) {
613 hardlimit = be64_to_cpu(dqp->q_core.d_blk_hardlimit);
614 if (!hardlimit)
615 hardlimit = q->qi_bhardlimit;
616 softlimit = be64_to_cpu(dqp->q_core.d_blk_softlimit);
617 if (!softlimit)
618 softlimit = q->qi_bsoftlimit;
619 timer = be32_to_cpu(dqp->q_core.d_btimer);
620 warns = be16_to_cpu(dqp->q_core.d_bwarns);
621 warnlimit = dqp->q_mount->m_quotainfo->qi_bwarnlimit;
622 resbcountp = &dqp->q_res_bcount;
623 } else {
624 ASSERT(flags & XFS_TRANS_DQ_RES_RTBLKS);
625 hardlimit = be64_to_cpu(dqp->q_core.d_rtb_hardlimit);
626 if (!hardlimit)
627 hardlimit = q->qi_rtbhardlimit;
628 softlimit = be64_to_cpu(dqp->q_core.d_rtb_softlimit);
629 if (!softlimit)
630 softlimit = q->qi_rtbsoftlimit;
631 timer = be32_to_cpu(dqp->q_core.d_rtbtimer);
632 warns = be16_to_cpu(dqp->q_core.d_rtbwarns);
633 warnlimit = dqp->q_mount->m_quotainfo->qi_rtbwarnlimit;
634 resbcountp = &dqp->q_res_rtbcount;
635 }
636
637 if ((flags & XFS_QMOPT_FORCE_RES) == 0 &&
638 dqp->q_core.d_id &&
639 ((XFS_IS_UQUOTA_ENFORCED(dqp->q_mount) && XFS_QM_ISUDQ(dqp)) ||
640 (XFS_IS_GQUOTA_ENFORCED(dqp->q_mount) && XFS_QM_ISGDQ(dqp)) ||
641 (XFS_IS_PQUOTA_ENFORCED(dqp->q_mount) && XFS_QM_ISPDQ(dqp)))) {
642 if (nblks > 0) {
643 /*
644 * dquot is locked already. See if we'd go over the
645 * hardlimit or exceed the timelimit if we allocate
646 * nblks.
647 */
648 total_count = *resbcountp + nblks;
649 if (hardlimit && total_count > hardlimit) {
650 xfs_quota_warn(mp, dqp, QUOTA_NL_BHARDWARN);
651 goto error_return;
652 }
653 if (softlimit && total_count > softlimit) {
654 if ((timer != 0 && get_seconds() > timer) ||
655 (warns != 0 && warns >= warnlimit)) {
656 xfs_quota_warn(mp, dqp,
657 QUOTA_NL_BSOFTLONGWARN);
658 goto error_return;
659 }
660
661 xfs_quota_warn(mp, dqp, QUOTA_NL_BSOFTWARN);
662 }
663 }
664 if (ninos > 0) {
665 total_count = be64_to_cpu(dqp->q_core.d_icount) + ninos;
666 timer = be32_to_cpu(dqp->q_core.d_itimer);
667 warns = be16_to_cpu(dqp->q_core.d_iwarns);
668 warnlimit = dqp->q_mount->m_quotainfo->qi_iwarnlimit;
669 hardlimit = be64_to_cpu(dqp->q_core.d_ino_hardlimit);
670 if (!hardlimit)
671 hardlimit = q->qi_ihardlimit;
672 softlimit = be64_to_cpu(dqp->q_core.d_ino_softlimit);
673 if (!softlimit)
674 softlimit = q->qi_isoftlimit;
675
676 if (hardlimit && total_count > hardlimit) {
677 xfs_quota_warn(mp, dqp, QUOTA_NL_IHARDWARN);
678 goto error_return;
679 }
680 if (softlimit && total_count > softlimit) {
681 if ((timer != 0 && get_seconds() > timer) ||
682 (warns != 0 && warns >= warnlimit)) {
683 xfs_quota_warn(mp, dqp,
684 QUOTA_NL_ISOFTLONGWARN);
685 goto error_return;
686 }
687 xfs_quota_warn(mp, dqp, QUOTA_NL_ISOFTWARN);
688 }
689 }
690 }
691
692 /*
693 * Change the reservation, but not the actual usage.
694 * Note that q_res_bcount = q_core.d_bcount + resv
695 */
696 (*resbcountp) += (xfs_qcnt_t)nblks;
697 if (ninos != 0)
698 dqp->q_res_icount += (xfs_qcnt_t)ninos;
699
700 /*
701 * note the reservation amt in the trans struct too,
702 * so that the transaction knows how much was reserved by
703 * it against this particular dquot.
704 * We don't do this when we are reserving for a delayed allocation,
705 * because we don't have the luxury of a transaction envelope then.
706 */
707 if (tp) {
708 ASSERT(tp->t_dqinfo);
709 ASSERT(flags & XFS_QMOPT_RESBLK_MASK);
710 if (nblks != 0)
711 xfs_trans_mod_dquot(tp, dqp,
712 flags & XFS_QMOPT_RESBLK_MASK,
713 nblks);
714 if (ninos != 0)
715 xfs_trans_mod_dquot(tp, dqp,
716 XFS_TRANS_DQ_RES_INOS,
717 ninos);
718 }
719 ASSERT(dqp->q_res_bcount >= be64_to_cpu(dqp->q_core.d_bcount));
720 ASSERT(dqp->q_res_rtbcount >= be64_to_cpu(dqp->q_core.d_rtbcount));
721 ASSERT(dqp->q_res_icount >= be64_to_cpu(dqp->q_core.d_icount));
722
723 xfs_dqunlock(dqp);
724 return 0;
725
726 error_return:
727 xfs_dqunlock(dqp);
728 if (flags & XFS_QMOPT_ENOSPC)
729 return -ENOSPC;
730 return -EDQUOT;
731 }
732
733
734 /*
735 * Given dquot(s), make disk block and/or inode reservations against them.
736 * The fact that this does the reservation against user, group and
737 * project quotas is important, because this follows a all-or-nothing
738 * approach.
739 *
740 * flags = XFS_QMOPT_FORCE_RES evades limit enforcement. Used by chown.
741 * XFS_QMOPT_ENOSPC returns ENOSPC not EDQUOT. Used by pquota.
742 * XFS_TRANS_DQ_RES_BLKS reserves regular disk blocks
743 * XFS_TRANS_DQ_RES_RTBLKS reserves realtime disk blocks
744 * dquots are unlocked on return, if they were not locked by caller.
745 */
746 int
747 xfs_trans_reserve_quota_bydquots(
748 struct xfs_trans *tp,
749 struct xfs_mount *mp,
750 struct xfs_dquot *udqp,
751 struct xfs_dquot *gdqp,
752 struct xfs_dquot *pdqp,
753 long nblks,
754 long ninos,
755 uint flags)
756 {
757 int error;
758
759 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
760 return 0;
761
762 if (tp && tp->t_dqinfo == NULL)
763 xfs_trans_alloc_dqinfo(tp);
764
765 ASSERT(flags & XFS_QMOPT_RESBLK_MASK);
766
767 if (udqp) {
768 error = xfs_trans_dqresv(tp, mp, udqp, nblks, ninos,
769 (flags & ~XFS_QMOPT_ENOSPC));
770 if (error)
771 return error;
772 }
773
774 if (gdqp) {
775 error = xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos, flags);
776 if (error)
777 goto unwind_usr;
778 }
779
780 if (pdqp) {
781 error = xfs_trans_dqresv(tp, mp, pdqp, nblks, ninos, flags);
782 if (error)
783 goto unwind_grp;
784 }
785
786 /*
787 * Didn't change anything critical, so, no need to log
788 */
789 return 0;
790
791 unwind_grp:
792 flags |= XFS_QMOPT_FORCE_RES;
793 if (gdqp)
794 xfs_trans_dqresv(tp, mp, gdqp, -nblks, -ninos, flags);
795 unwind_usr:
796 flags |= XFS_QMOPT_FORCE_RES;
797 if (udqp)
798 xfs_trans_dqresv(tp, mp, udqp, -nblks, -ninos, flags);
799 return error;
800 }
801
802
803 /*
804 * Lock the dquot and change the reservation if we can.
805 * This doesn't change the actual usage, just the reservation.
806 * The inode sent in is locked.
807 */
808 int
809 xfs_trans_reserve_quota_nblks(
810 struct xfs_trans *tp,
811 struct xfs_inode *ip,
812 long nblks,
813 long ninos,
814 uint flags)
815 {
816 struct xfs_mount *mp = ip->i_mount;
817
818 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
819 return 0;
820 if (XFS_IS_PQUOTA_ON(mp))
821 flags |= XFS_QMOPT_ENOSPC;
822
823 ASSERT(!xfs_is_quota_inode(&mp->m_sb, ip->i_ino));
824
825 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
826 ASSERT((flags & ~(XFS_QMOPT_FORCE_RES | XFS_QMOPT_ENOSPC)) ==
827 XFS_TRANS_DQ_RES_RTBLKS ||
828 (flags & ~(XFS_QMOPT_FORCE_RES | XFS_QMOPT_ENOSPC)) ==
829 XFS_TRANS_DQ_RES_BLKS);
830
831 /*
832 * Reserve nblks against these dquots, with trans as the mediator.
833 */
834 return xfs_trans_reserve_quota_bydquots(tp, mp,
835 ip->i_udquot, ip->i_gdquot,
836 ip->i_pdquot,
837 nblks, ninos, flags);
838 }
839
840 /*
841 * This routine is called to allocate a quotaoff log item.
842 */
843 xfs_qoff_logitem_t *
844 xfs_trans_get_qoff_item(
845 xfs_trans_t *tp,
846 xfs_qoff_logitem_t *startqoff,
847 uint flags)
848 {
849 xfs_qoff_logitem_t *q;
850
851 ASSERT(tp != NULL);
852
853 q = xfs_qm_qoff_logitem_init(tp->t_mountp, startqoff, flags);
854 ASSERT(q != NULL);
855
856 /*
857 * Get a log_item_desc to point at the new item.
858 */
859 xfs_trans_add_item(tp, &q->qql_item);
860 return q;
861 }
862
863
864 /*
865 * This is called to mark the quotaoff logitem as needing
866 * to be logged when the transaction is committed. The logitem must
867 * already be associated with the given transaction.
868 */
869 void
870 xfs_trans_log_quotaoff_item(
871 xfs_trans_t *tp,
872 xfs_qoff_logitem_t *qlp)
873 {
874 tp->t_flags |= XFS_TRANS_DIRTY;
875 qlp->qql_item.li_desc->lid_flags |= XFS_LID_DIRTY;
876 }
877
878 STATIC void
879 xfs_trans_alloc_dqinfo(
880 xfs_trans_t *tp)
881 {
882 tp->t_dqinfo = kmem_zone_zalloc(xfs_qm_dqtrxzone, KM_SLEEP);
883 }
884
885 void
886 xfs_trans_free_dqinfo(
887 xfs_trans_t *tp)
888 {
889 if (!tp->t_dqinfo)
890 return;
891 kmem_zone_free(xfs_qm_dqtrxzone, tp->t_dqinfo);
892 tp->t_dqinfo = NULL;
893 }
Linux with added FPC-III support