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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott4ce31212005-11-02 14:59:41 +11002 * Copyright (c) 2000-2002 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott4ce31212005-11-02 14:59:41 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott4ce31212005-11-02 14:59:41 +11009 * 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott4ce31212005-11-02 14:59:41 +110014 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#include "xfs.h"
19#include "xfs_fs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070020#include "xfs_log.h"
21#include "xfs_trans.h"
22#include "xfs_sb.h"
23#include "xfs_ag.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#include "xfs_alloc.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#include "xfs_quota.h"
26#include "xfs_mount.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include "xfs_bmap_btree.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070028#include "xfs_inode.h"
Nathan Scotta844f452005-11-02 14:38:42 +110029#include "xfs_itable.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070030#include "xfs_bmap.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#include "xfs_rtalloc.h"
32#include "xfs_error.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070033#include "xfs_attr.h"
34#include "xfs_buf_item.h"
35#include "xfs_trans_priv.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070036#include "xfs_qm.h"
37
38STATIC void xfs_trans_alloc_dqinfo(xfs_trans_t *);
39
40/*
41 * Add the locked dquot to the transaction.
42 * The dquot must be locked, and it cannot be associated with any
43 * transaction.
44 */
45void
46xfs_trans_dqjoin(
47 xfs_trans_t *tp,
48 xfs_dquot_t *dqp)
49{
Christoph Hellwig191f8482010-04-20 17:01:53 +100050 ASSERT(dqp->q_transp != tp);
Linus Torvalds1da177e2005-04-16 15:20:36 -070051 ASSERT(XFS_DQ_IS_LOCKED(dqp));
Christoph Hellwige98c4142010-06-23 18:11:15 +100052 ASSERT(dqp->q_logitem.qli_dquot == dqp);
Linus Torvalds1da177e2005-04-16 15:20:36 -070053
54 /*
55 * Get a log_item_desc to point at the new item.
56 */
Christoph Hellwige98c4142010-06-23 18:11:15 +100057 xfs_trans_add_item(tp, &dqp->q_logitem.qli_item);
Linus Torvalds1da177e2005-04-16 15:20:36 -070058
59 /*
Christoph Hellwigf3ca87382011-07-08 14:34:47 +020060 * Initialize d_transp so we can later determine if this dquot is
Linus Torvalds1da177e2005-04-16 15:20:36 -070061 * associated with this transaction.
62 */
63 dqp->q_transp = tp;
64}
65
66
67/*
68 * This is called to mark the dquot as needing
69 * to be logged when the transaction is committed. The dquot must
70 * already be associated with the given transaction.
71 * Note that it marks the entire transaction as dirty. In the ordinary
72 * case, this gets called via xfs_trans_commit, after the transaction
73 * is already dirty. However, there's nothing stop this from getting
74 * called directly, as done by xfs_qm_scall_setqlim. Hence, the TRANS_DIRTY
75 * flag.
76 */
77void
78xfs_trans_log_dquot(
79 xfs_trans_t *tp,
80 xfs_dquot_t *dqp)
81{
Christoph Hellwig191f8482010-04-20 17:01:53 +100082 ASSERT(dqp->q_transp == tp);
Linus Torvalds1da177e2005-04-16 15:20:36 -070083 ASSERT(XFS_DQ_IS_LOCKED(dqp));
84
Linus Torvalds1da177e2005-04-16 15:20:36 -070085 tp->t_flags |= XFS_TRANS_DIRTY;
Christoph Hellwige98c4142010-06-23 18:11:15 +100086 dqp->q_logitem.qli_item.li_desc->lid_flags |= XFS_LID_DIRTY;
Linus Torvalds1da177e2005-04-16 15:20:36 -070087}
88
89/*
90 * Carry forward whatever is left of the quota blk reservation to
91 * the spanky new transaction
92 */
Christoph Hellwig7d095252009-06-08 15:33:32 +020093void
Linus Torvalds1da177e2005-04-16 15:20:36 -070094xfs_trans_dup_dqinfo(
95 xfs_trans_t *otp,
96 xfs_trans_t *ntp)
97{
98 xfs_dqtrx_t *oq, *nq;
99 int i,j;
100 xfs_dqtrx_t *oqa, *nqa;
101
102 if (!otp->t_dqinfo)
103 return;
104
105 xfs_trans_alloc_dqinfo(ntp);
106 oqa = otp->t_dqinfo->dqa_usrdquots;
107 nqa = ntp->t_dqinfo->dqa_usrdquots;
108
109 /*
110 * Because the quota blk reservation is carried forward,
111 * it is also necessary to carry forward the DQ_DIRTY flag.
112 */
113 if(otp->t_flags & XFS_TRANS_DQ_DIRTY)
114 ntp->t_flags |= XFS_TRANS_DQ_DIRTY;
115
116 for (j = 0; j < 2; j++) {
117 for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
118 if (oqa[i].qt_dquot == NULL)
119 break;
120 oq = &oqa[i];
121 nq = &nqa[i];
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 - oq->qt_blk_res_used;
131 oq->qt_blk_res = oq->qt_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 oqa = otp->t_dqinfo->dqa_grpdquots;
142 nqa = ntp->t_dqinfo->dqa_grpdquots;
143 }
144}
145
146/*
147 * Wrap around mod_dquot to account for both user and group quotas.
148 */
Christoph Hellwig7d095252009-06-08 15:33:32 +0200149void
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150xfs_trans_mod_dquot_byino(
151 xfs_trans_t *tp,
152 xfs_inode_t *ip,
153 uint field,
154 long delta)
155{
Christoph Hellwig7d095252009-06-08 15:33:32 +0200156 xfs_mount_t *mp = tp->t_mountp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157
Christoph Hellwig7d095252009-06-08 15:33:32 +0200158 if (!XFS_IS_QUOTA_RUNNING(mp) ||
159 !XFS_IS_QUOTA_ON(mp) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160 ip->i_ino == mp->m_sb.sb_uquotino ||
161 ip->i_ino == mp->m_sb.sb_gquotino)
162 return;
163
164 if (tp->t_dqinfo == NULL)
165 xfs_trans_alloc_dqinfo(tp);
166
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000167 if (XFS_IS_UQUOTA_ON(mp) && ip->i_udquot)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168 (void) xfs_trans_mod_dquot(tp, ip->i_udquot, field, delta);
Nathan Scottc8ad20f2005-06-21 15:38:48 +1000169 if (XFS_IS_OQUOTA_ON(mp) && ip->i_gdquot)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170 (void) xfs_trans_mod_dquot(tp, ip->i_gdquot, field, delta);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171}
172
173STATIC xfs_dqtrx_t *
174xfs_trans_get_dqtrx(
175 xfs_trans_t *tp,
176 xfs_dquot_t *dqp)
177{
178 int i;
179 xfs_dqtrx_t *qa;
180
Christoph Hellwig191f8482010-04-20 17:01:53 +1000181 qa = XFS_QM_ISUDQ(dqp) ?
182 tp->t_dqinfo->dqa_usrdquots : tp->t_dqinfo->dqa_grpdquots;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183
Christoph Hellwig191f8482010-04-20 17:01:53 +1000184 for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185 if (qa[i].qt_dquot == NULL ||
Christoph Hellwig191f8482010-04-20 17:01:53 +1000186 qa[i].qt_dquot == dqp)
187 return &qa[i];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188 }
189
Christoph Hellwig191f8482010-04-20 17:01:53 +1000190 return NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191}
192
193/*
194 * Make the changes in the transaction structure.
195 * The moral equivalent to xfs_trans_mod_sb().
196 * We don't touch any fields in the dquot, so we don't care
197 * if it's locked or not (most of the time it won't be).
198 */
199void
200xfs_trans_mod_dquot(
201 xfs_trans_t *tp,
202 xfs_dquot_t *dqp,
203 uint field,
204 long delta)
205{
206 xfs_dqtrx_t *qtrx;
207
208 ASSERT(tp);
Christoph Hellwig7d095252009-06-08 15:33:32 +0200209 ASSERT(XFS_IS_QUOTA_RUNNING(tp->t_mountp));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 qtrx = NULL;
211
212 if (tp->t_dqinfo == NULL)
213 xfs_trans_alloc_dqinfo(tp);
214 /*
215 * Find either the first free slot or the slot that belongs
216 * to this dquot.
217 */
218 qtrx = xfs_trans_get_dqtrx(tp, dqp);
219 ASSERT(qtrx);
220 if (qtrx->qt_dquot == NULL)
221 qtrx->qt_dquot = dqp;
222
223 switch (field) {
224
225 /*
226 * regular disk blk reservation
227 */
228 case XFS_TRANS_DQ_RES_BLKS:
229 qtrx->qt_blk_res += (ulong)delta;
230 break;
231
232 /*
233 * inode reservation
234 */
235 case XFS_TRANS_DQ_RES_INOS:
236 qtrx->qt_ino_res += (ulong)delta;
237 break;
238
239 /*
240 * disk blocks used.
241 */
242 case XFS_TRANS_DQ_BCOUNT:
243 if (qtrx->qt_blk_res && delta > 0) {
244 qtrx->qt_blk_res_used += (ulong)delta;
245 ASSERT(qtrx->qt_blk_res >= qtrx->qt_blk_res_used);
246 }
247 qtrx->qt_bcount_delta += delta;
248 break;
249
250 case XFS_TRANS_DQ_DELBCOUNT:
251 qtrx->qt_delbcnt_delta += delta;
252 break;
253
254 /*
255 * Inode Count
256 */
257 case XFS_TRANS_DQ_ICOUNT:
258 if (qtrx->qt_ino_res && delta > 0) {
259 qtrx->qt_ino_res_used += (ulong)delta;
260 ASSERT(qtrx->qt_ino_res >= qtrx->qt_ino_res_used);
261 }
262 qtrx->qt_icount_delta += delta;
263 break;
264
265 /*
266 * rtblk reservation
267 */
268 case XFS_TRANS_DQ_RES_RTBLKS:
269 qtrx->qt_rtblk_res += (ulong)delta;
270 break;
271
272 /*
273 * rtblk count
274 */
275 case XFS_TRANS_DQ_RTBCOUNT:
276 if (qtrx->qt_rtblk_res && delta > 0) {
277 qtrx->qt_rtblk_res_used += (ulong)delta;
278 ASSERT(qtrx->qt_rtblk_res >= qtrx->qt_rtblk_res_used);
279 }
280 qtrx->qt_rtbcount_delta += delta;
281 break;
282
283 case XFS_TRANS_DQ_DELRTBCOUNT:
284 qtrx->qt_delrtb_delta += delta;
285 break;
286
287 default:
288 ASSERT(0);
289 }
290 tp->t_flags |= XFS_TRANS_DQ_DIRTY;
291}
292
293
294/*
295 * Given an array of dqtrx structures, lock all the dquots associated
296 * and join them to the transaction, provided they have been modified.
297 * We know that the highest number of dquots (of one type - usr OR grp),
298 * involved in a transaction is 2 and that both usr and grp combined - 3.
299 * So, we don't attempt to make this very generic.
300 */
301STATIC void
302xfs_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 */
Christoph Hellwig7d095252009-06-08 15:33:32 +0200327void
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328xfs_trans_apply_dquot_deltas(
329 xfs_trans_t *tp)
330{
331 int i, j;
332 xfs_dquot_t *dqp;
333 xfs_dqtrx_t *qtrx, *qa;
334 xfs_disk_dquot_t *d;
335 long totalbdelta;
336 long totalrtbdelta;
337
Christoph Hellwig7d095252009-06-08 15:33:32 +0200338 if (!(tp->t_flags & XFS_TRANS_DQ_DIRTY))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339 return;
340
341 ASSERT(tp->t_dqinfo);
342 qa = tp->t_dqinfo->dqa_usrdquots;
343 for (j = 0; j < 2; j++) {
344 if (qa[0].qt_dquot == NULL) {
345 qa = tp->t_dqinfo->dqa_grpdquots;
346 continue;
347 }
348
349 /*
350 * Lock all of the dquots and join them to the transaction.
351 */
352 xfs_trans_dqlockedjoin(tp, qa);
353
354 for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
355 qtrx = &qa[i];
356 /*
357 * The array of dquots is filled
358 * sequentially, not sparsely.
359 */
360 if ((dqp = qtrx->qt_dquot) == NULL)
361 break;
362
363 ASSERT(XFS_DQ_IS_LOCKED(dqp));
Christoph Hellwig191f8482010-04-20 17:01:53 +1000364 ASSERT(dqp->q_transp == tp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365
366 /*
367 * adjust the actual number of blocks used
368 */
369 d = &dqp->q_core;
370
371 /*
372 * The issue here is - sometimes we don't make a blkquota
373 * reservation intentionally to be fair to users
374 * (when the amount is small). On the other hand,
375 * delayed allocs do make reservations, but that's
376 * outside of a transaction, so we have no
377 * idea how much was really reserved.
378 * So, here we've accumulated delayed allocation blks and
379 * non-delay blks. The assumption is that the
380 * delayed ones are always reserved (outside of a
381 * transaction), and the others may or may not have
382 * quota reservations.
383 */
384 totalbdelta = qtrx->qt_bcount_delta +
385 qtrx->qt_delbcnt_delta;
386 totalrtbdelta = qtrx->qt_rtbcount_delta +
387 qtrx->qt_delrtb_delta;
Christoph Hellwigea15ab32011-07-13 13:43:50 +0200388#ifdef DEBUG
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 if (totalbdelta < 0)
Christoph Hellwig1149d962005-11-02 15:01:12 +1100390 ASSERT(be64_to_cpu(d->d_bcount) >=
Christoph Hellwigea15ab32011-07-13 13:43:50 +0200391 -totalbdelta);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392
393 if (totalrtbdelta < 0)
Christoph Hellwig1149d962005-11-02 15:01:12 +1100394 ASSERT(be64_to_cpu(d->d_rtbcount) >=
Christoph Hellwigea15ab32011-07-13 13:43:50 +0200395 -totalrtbdelta);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396
397 if (qtrx->qt_icount_delta < 0)
Christoph Hellwig1149d962005-11-02 15:01:12 +1100398 ASSERT(be64_to_cpu(d->d_icount) >=
Christoph Hellwigea15ab32011-07-13 13:43:50 +0200399 -qtrx->qt_icount_delta);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400#endif
401 if (totalbdelta)
Marcin Slusarz413d57c2008-02-13 15:03:29 -0800402 be64_add_cpu(&d->d_bcount, (xfs_qcnt_t)totalbdelta);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403
404 if (qtrx->qt_icount_delta)
Marcin Slusarz413d57c2008-02-13 15:03:29 -0800405 be64_add_cpu(&d->d_icount, (xfs_qcnt_t)qtrx->qt_icount_delta);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406
407 if (totalrtbdelta)
Marcin Slusarz413d57c2008-02-13 15:03:29 -0800408 be64_add_cpu(&d->d_rtbcount, (xfs_qcnt_t)totalrtbdelta);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409
410 /*
411 * Get any default limits in use.
412 * Start/reset the timer(s) if needed.
413 */
414 if (d->d_id) {
415 xfs_qm_adjust_dqlimits(tp->t_mountp, d);
416 xfs_qm_adjust_dqtimers(tp->t_mountp, d);
417 }
418
419 dqp->dq_flags |= XFS_DQ_DIRTY;
420 /*
421 * add this to the list of items to get logged
422 */
423 xfs_trans_log_dquot(tp, dqp);
424 /*
425 * Take off what's left of the original reservation.
426 * In case of delayed allocations, there's no
427 * reservation that a transaction structure knows of.
428 */
429 if (qtrx->qt_blk_res != 0) {
430 if (qtrx->qt_blk_res != qtrx->qt_blk_res_used) {
431 if (qtrx->qt_blk_res >
432 qtrx->qt_blk_res_used)
433 dqp->q_res_bcount -= (xfs_qcnt_t)
434 (qtrx->qt_blk_res -
435 qtrx->qt_blk_res_used);
436 else
437 dqp->q_res_bcount -= (xfs_qcnt_t)
438 (qtrx->qt_blk_res_used -
439 qtrx->qt_blk_res);
440 }
441 } else {
442 /*
443 * These blks were never reserved, either inside
444 * a transaction or outside one (in a delayed
445 * allocation). Also, this isn't always a
446 * negative number since we sometimes
447 * deliberately skip quota reservations.
448 */
449 if (qtrx->qt_bcount_delta) {
450 dqp->q_res_bcount +=
451 (xfs_qcnt_t)qtrx->qt_bcount_delta;
452 }
453 }
454 /*
455 * Adjust the RT reservation.
456 */
457 if (qtrx->qt_rtblk_res != 0) {
Nathan Scott06d10dd2005-06-21 15:48:47 +1000458 if (qtrx->qt_rtblk_res != qtrx->qt_rtblk_res_used) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459 if (qtrx->qt_rtblk_res >
460 qtrx->qt_rtblk_res_used)
461 dqp->q_res_rtbcount -= (xfs_qcnt_t)
462 (qtrx->qt_rtblk_res -
463 qtrx->qt_rtblk_res_used);
464 else
465 dqp->q_res_rtbcount -= (xfs_qcnt_t)
466 (qtrx->qt_rtblk_res_used -
467 qtrx->qt_rtblk_res);
468 }
469 } else {
470 if (qtrx->qt_rtbcount_delta)
471 dqp->q_res_rtbcount +=
472 (xfs_qcnt_t)qtrx->qt_rtbcount_delta;
473 }
474
475 /*
476 * Adjust the inode reservation.
477 */
478 if (qtrx->qt_ino_res != 0) {
479 ASSERT(qtrx->qt_ino_res >=
480 qtrx->qt_ino_res_used);
481 if (qtrx->qt_ino_res > qtrx->qt_ino_res_used)
482 dqp->q_res_icount -= (xfs_qcnt_t)
483 (qtrx->qt_ino_res -
484 qtrx->qt_ino_res_used);
485 } else {
486 if (qtrx->qt_icount_delta)
487 dqp->q_res_icount +=
488 (xfs_qcnt_t)qtrx->qt_icount_delta;
489 }
490
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491 ASSERT(dqp->q_res_bcount >=
Christoph Hellwig1149d962005-11-02 15:01:12 +1100492 be64_to_cpu(dqp->q_core.d_bcount));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493 ASSERT(dqp->q_res_icount >=
Christoph Hellwig1149d962005-11-02 15:01:12 +1100494 be64_to_cpu(dqp->q_core.d_icount));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495 ASSERT(dqp->q_res_rtbcount >=
Christoph Hellwig1149d962005-11-02 15:01:12 +1100496 be64_to_cpu(dqp->q_core.d_rtbcount));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497 }
498 /*
499 * Do the group quotas next
500 */
501 qa = tp->t_dqinfo->dqa_grpdquots;
502 }
503}
504
505/*
506 * Release the reservations, and adjust the dquots accordingly.
507 * This is called only when the transaction is being aborted. If by
508 * any chance we have done dquot modifications incore (ie. deltas) already,
509 * we simply throw those away, since that's the expected behavior
510 * when a transaction is curtailed without a commit.
511 */
Christoph Hellwig7d095252009-06-08 15:33:32 +0200512void
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513xfs_trans_unreserve_and_mod_dquots(
514 xfs_trans_t *tp)
515{
516 int i, j;
517 xfs_dquot_t *dqp;
518 xfs_dqtrx_t *qtrx, *qa;
519 boolean_t locked;
520
521 if (!tp->t_dqinfo || !(tp->t_flags & XFS_TRANS_DQ_DIRTY))
522 return;
523
524 qa = tp->t_dqinfo->dqa_usrdquots;
525
526 for (j = 0; j < 2; j++) {
527 for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) {
528 qtrx = &qa[i];
529 /*
530 * We assume that the array of dquots is filled
531 * sequentially, not sparsely.
532 */
533 if ((dqp = qtrx->qt_dquot) == NULL)
534 break;
535 /*
536 * Unreserve the original reservation. We don't care
537 * about the number of blocks used field, or deltas.
538 * Also we don't bother to zero the fields.
539 */
540 locked = B_FALSE;
541 if (qtrx->qt_blk_res) {
542 xfs_dqlock(dqp);
543 locked = B_TRUE;
544 dqp->q_res_bcount -=
545 (xfs_qcnt_t)qtrx->qt_blk_res;
546 }
547 if (qtrx->qt_ino_res) {
548 if (!locked) {
549 xfs_dqlock(dqp);
550 locked = B_TRUE;
551 }
552 dqp->q_res_icount -=
553 (xfs_qcnt_t)qtrx->qt_ino_res;
554 }
555
556 if (qtrx->qt_rtblk_res) {
557 if (!locked) {
558 xfs_dqlock(dqp);
559 locked = B_TRUE;
560 }
561 dqp->q_res_rtbcount -=
562 (xfs_qcnt_t)qtrx->qt_rtblk_res;
563 }
564 if (locked)
565 xfs_dqunlock(dqp);
566
567 }
568 qa = tp->t_dqinfo->dqa_grpdquots;
569 }
570}
571
Christoph Hellwiga210c1a2010-01-17 22:36:19 +0000572STATIC void
573xfs_quota_warn(
574 struct xfs_mount *mp,
575 struct xfs_dquot *dqp,
576 int type)
577{
578 /* no warnings for project quotas - we just return ENOSPC later */
579 if (dqp->dq_flags & XFS_DQ_PROJ)
580 return;
581 quota_send_warning((dqp->dq_flags & XFS_DQ_USER) ? USRQUOTA : GRPQUOTA,
582 be32_to_cpu(dqp->q_core.d_id), mp->m_super->s_dev,
583 type);
584}
585
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586/*
587 * This reserves disk blocks and inodes against a dquot.
588 * Flags indicate if the dquot is to be locked here and also
589 * if the blk reservation is for RT or regular blocks.
590 * Sending in XFS_QMOPT_FORCE_RES flag skips the quota check.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700591 */
592STATIC int
593xfs_trans_dqresv(
594 xfs_trans_t *tp,
595 xfs_mount_t *mp,
596 xfs_dquot_t *dqp,
597 long nblks,
598 long ninos,
599 uint flags)
600{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601 xfs_qcnt_t hardlimit;
602 xfs_qcnt_t softlimit;
Nathan Scott06d10dd2005-06-21 15:48:47 +1000603 time_t timer;
604 xfs_qwarncnt_t warns;
605 xfs_qwarncnt_t warnlimit;
Mitsuo Hayasaka70b54372012-02-06 12:51:05 +0000606 xfs_qcnt_t total_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607 xfs_qcnt_t *resbcountp;
608 xfs_quotainfo_t *q = mp->m_quotainfo;
609
Christoph Hellwig8e9b6e72009-02-08 21:51:42 +0100610
611 xfs_dqlock(dqp);
612
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613 if (flags & XFS_TRANS_DQ_RES_BLKS) {
Christoph Hellwig1149d962005-11-02 15:01:12 +1100614 hardlimit = be64_to_cpu(dqp->q_core.d_blk_hardlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615 if (!hardlimit)
616 hardlimit = q->qi_bhardlimit;
Christoph Hellwig1149d962005-11-02 15:01:12 +1100617 softlimit = be64_to_cpu(dqp->q_core.d_blk_softlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618 if (!softlimit)
619 softlimit = q->qi_bsoftlimit;
Christoph Hellwig1149d962005-11-02 15:01:12 +1100620 timer = be32_to_cpu(dqp->q_core.d_btimer);
621 warns = be16_to_cpu(dqp->q_core.d_bwarns);
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000622 warnlimit = dqp->q_mount->m_quotainfo->qi_bwarnlimit;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623 resbcountp = &dqp->q_res_bcount;
624 } else {
625 ASSERT(flags & XFS_TRANS_DQ_RES_RTBLKS);
Christoph Hellwig1149d962005-11-02 15:01:12 +1100626 hardlimit = be64_to_cpu(dqp->q_core.d_rtb_hardlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700627 if (!hardlimit)
628 hardlimit = q->qi_rtbhardlimit;
Christoph Hellwig1149d962005-11-02 15:01:12 +1100629 softlimit = be64_to_cpu(dqp->q_core.d_rtb_softlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630 if (!softlimit)
631 softlimit = q->qi_rtbsoftlimit;
Christoph Hellwig1149d962005-11-02 15:01:12 +1100632 timer = be32_to_cpu(dqp->q_core.d_rtbtimer);
633 warns = be16_to_cpu(dqp->q_core.d_rtbwarns);
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000634 warnlimit = dqp->q_mount->m_quotainfo->qi_rtbwarnlimit;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700635 resbcountp = &dqp->q_res_rtbcount;
636 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700637
638 if ((flags & XFS_QMOPT_FORCE_RES) == 0 &&
639 dqp->q_core.d_id &&
Kouta Ooizumie6d29422007-05-08 13:49:33 +1000640 ((XFS_IS_UQUOTA_ENFORCED(dqp->q_mount) && XFS_QM_ISUDQ(dqp)) ||
641 (XFS_IS_OQUOTA_ENFORCED(dqp->q_mount) &&
642 (XFS_QM_ISPDQ(dqp) || XFS_QM_ISGDQ(dqp))))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643 if (nblks > 0) {
644 /*
645 * dquot is locked already. See if we'd go over the
646 * hardlimit or exceed the timelimit if we allocate
647 * nblks.
648 */
Mitsuo Hayasaka70b54372012-02-06 12:51:05 +0000649 total_count = *resbcountp + nblks;
650 if (hardlimit && total_count > hardlimit) {
Christoph Hellwiga210c1a2010-01-17 22:36:19 +0000651 xfs_quota_warn(mp, dqp, QUOTA_NL_BHARDWARN);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652 goto error_return;
Christoph Hellwiga210c1a2010-01-17 22:36:19 +0000653 }
Mitsuo Hayasaka70b54372012-02-06 12:51:05 +0000654 if (softlimit && total_count > softlimit) {
Christoph Hellwiga210c1a2010-01-17 22:36:19 +0000655 if ((timer != 0 && get_seconds() > timer) ||
656 (warns != 0 && warns >= warnlimit)) {
657 xfs_quota_warn(mp, dqp,
658 QUOTA_NL_BSOFTLONGWARN);
659 goto error_return;
660 }
661
662 xfs_quota_warn(mp, dqp, QUOTA_NL_BSOFTWARN);
663 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664 }
665 if (ninos > 0) {
Mitsuo Hayasaka70b54372012-02-06 12:51:05 +0000666 total_count = be64_to_cpu(dqp->q_core.d_icount) + ninos;
Christoph Hellwig1149d962005-11-02 15:01:12 +1100667 timer = be32_to_cpu(dqp->q_core.d_itimer);
668 warns = be16_to_cpu(dqp->q_core.d_iwarns);
Christoph Hellwig8a7b8a82010-04-20 17:01:30 +1000669 warnlimit = dqp->q_mount->m_quotainfo->qi_iwarnlimit;
Christoph Hellwig1149d962005-11-02 15:01:12 +1100670 hardlimit = be64_to_cpu(dqp->q_core.d_ino_hardlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700671 if (!hardlimit)
672 hardlimit = q->qi_ihardlimit;
Christoph Hellwig1149d962005-11-02 15:01:12 +1100673 softlimit = be64_to_cpu(dqp->q_core.d_ino_softlimit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674 if (!softlimit)
675 softlimit = q->qi_isoftlimit;
Christoph Hellwig4d1f88d2010-01-13 22:05:49 +0000676
Mitsuo Hayasaka70b54372012-02-06 12:51:05 +0000677 if (hardlimit && total_count > hardlimit) {
Christoph Hellwiga210c1a2010-01-17 22:36:19 +0000678 xfs_quota_warn(mp, dqp, QUOTA_NL_IHARDWARN);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700679 goto error_return;
Christoph Hellwiga210c1a2010-01-17 22:36:19 +0000680 }
Mitsuo Hayasaka70b54372012-02-06 12:51:05 +0000681 if (softlimit && total_count > softlimit) {
Christoph Hellwiga210c1a2010-01-17 22:36:19 +0000682 if ((timer != 0 && get_seconds() > timer) ||
683 (warns != 0 && warns >= warnlimit)) {
684 xfs_quota_warn(mp, dqp,
685 QUOTA_NL_ISOFTLONGWARN);
686 goto error_return;
687 }
688 xfs_quota_warn(mp, dqp, QUOTA_NL_ISOFTWARN);
689 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690 }
691 }
692
693 /*
694 * Change the reservation, but not the actual usage.
695 * Note that q_res_bcount = q_core.d_bcount + resv
696 */
697 (*resbcountp) += (xfs_qcnt_t)nblks;
698 if (ninos != 0)
699 dqp->q_res_icount += (xfs_qcnt_t)ninos;
700
701 /*
702 * note the reservation amt in the trans struct too,
703 * so that the transaction knows how much was reserved by
704 * it against this particular dquot.
705 * We don't do this when we are reserving for a delayed allocation,
706 * because we don't have the luxury of a transaction envelope then.
707 */
708 if (tp) {
709 ASSERT(tp->t_dqinfo);
710 ASSERT(flags & XFS_QMOPT_RESBLK_MASK);
711 if (nblks != 0)
712 xfs_trans_mod_dquot(tp, dqp,
713 flags & XFS_QMOPT_RESBLK_MASK,
714 nblks);
715 if (ninos != 0)
716 xfs_trans_mod_dquot(tp, dqp,
717 XFS_TRANS_DQ_RES_INOS,
718 ninos);
719 }
Christoph Hellwig1149d962005-11-02 15:01:12 +1100720 ASSERT(dqp->q_res_bcount >= be64_to_cpu(dqp->q_core.d_bcount));
721 ASSERT(dqp->q_res_rtbcount >= be64_to_cpu(dqp->q_core.d_rtbcount));
722 ASSERT(dqp->q_res_icount >= be64_to_cpu(dqp->q_core.d_icount));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723
Christoph Hellwig4d1f88d2010-01-13 22:05:49 +0000724 xfs_dqunlock(dqp);
725 return 0;
726
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727error_return:
Christoph Hellwig8e9b6e72009-02-08 21:51:42 +0100728 xfs_dqunlock(dqp);
Christoph Hellwig4d1f88d2010-01-13 22:05:49 +0000729 if (flags & XFS_QMOPT_ENOSPC)
730 return ENOSPC;
731 return EDQUOT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732}
733
734
735/*
Nathan Scott9a2a7de2006-03-31 13:04:49 +1000736 * Given dquot(s), make disk block and/or inode reservations against them.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700737 * The fact that this does the reservation against both the usr and
Nathan Scott9a2a7de2006-03-31 13:04:49 +1000738 * grp/prj quotas is important, because this follows a both-or-nothing
Linus Torvalds1da177e2005-04-16 15:20:36 -0700739 * approach.
740 *
Christoph Hellwig8e9b6e72009-02-08 21:51:42 +0100741 * flags = XFS_QMOPT_FORCE_RES evades limit enforcement. Used by chown.
Nathan Scott9a2a7de2006-03-31 13:04:49 +1000742 * XFS_QMOPT_ENOSPC returns ENOSPC not EDQUOT. Used by pquota.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700743 * XFS_TRANS_DQ_RES_BLKS reserves regular disk blocks
744 * XFS_TRANS_DQ_RES_RTBLKS reserves realtime disk blocks
745 * dquots are unlocked on return, if they were not locked by caller.
746 */
747int
748xfs_trans_reserve_quota_bydquots(
749 xfs_trans_t *tp,
750 xfs_mount_t *mp,
751 xfs_dquot_t *udqp,
752 xfs_dquot_t *gdqp,
753 long nblks,
754 long ninos,
755 uint flags)
756{
Nathan Scott9a2a7de2006-03-31 13:04:49 +1000757 int resvd = 0, error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700758
Christoph Hellwig7d095252009-06-08 15:33:32 +0200759 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
Nathan Scott9a2a7de2006-03-31 13:04:49 +1000760 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700761
762 if (tp && tp->t_dqinfo == NULL)
763 xfs_trans_alloc_dqinfo(tp);
764
765 ASSERT(flags & XFS_QMOPT_RESBLK_MASK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766
767 if (udqp) {
Nathan Scott9a2a7de2006-03-31 13:04:49 +1000768 error = xfs_trans_dqresv(tp, mp, udqp, nblks, ninos,
769 (flags & ~XFS_QMOPT_ENOSPC));
770 if (error)
771 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700772 resvd = 1;
773 }
774
775 if (gdqp) {
Nathan Scott9a2a7de2006-03-31 13:04:49 +1000776 error = xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos, flags);
777 if (error) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778 /*
779 * can't do it, so backout previous reservation
780 */
781 if (resvd) {
782 flags |= XFS_QMOPT_FORCE_RES;
783 xfs_trans_dqresv(tp, mp, udqp,
784 -nblks, -ninos, flags);
785 }
Nathan Scott9a2a7de2006-03-31 13:04:49 +1000786 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700787 }
788 }
789
790 /*
Nathan Scottc41564b2006-03-29 08:55:14 +1000791 * Didn't change anything critical, so, no need to log
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792 */
Nathan Scott9a2a7de2006-03-31 13:04:49 +1000793 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794}
795
796
797/*
798 * Lock the dquot and change the reservation if we can.
799 * This doesn't change the actual usage, just the reservation.
800 * The inode sent in is locked.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700801 */
Christoph Hellwig7d095252009-06-08 15:33:32 +0200802int
Linus Torvalds1da177e2005-04-16 15:20:36 -0700803xfs_trans_reserve_quota_nblks(
Christoph Hellwig7d095252009-06-08 15:33:32 +0200804 struct xfs_trans *tp,
805 struct xfs_inode *ip,
806 long nblks,
807 long ninos,
808 uint flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809{
Christoph Hellwig7d095252009-06-08 15:33:32 +0200810 struct xfs_mount *mp = ip->i_mount;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700811
Christoph Hellwig7d095252009-06-08 15:33:32 +0200812 if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
Nathan Scott9a2a7de2006-03-31 13:04:49 +1000813 return 0;
814 if (XFS_IS_PQUOTA_ON(mp))
815 flags |= XFS_QMOPT_ENOSPC;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816
817 ASSERT(ip->i_ino != mp->m_sb.sb_uquotino);
818 ASSERT(ip->i_ino != mp->m_sb.sb_gquotino);
819
Christoph Hellwig579aa9c2008-04-22 17:34:00 +1000820 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
Nathan Scott9a2a7de2006-03-31 13:04:49 +1000821 ASSERT((flags & ~(XFS_QMOPT_FORCE_RES | XFS_QMOPT_ENOSPC)) ==
822 XFS_TRANS_DQ_RES_RTBLKS ||
823 (flags & ~(XFS_QMOPT_FORCE_RES | XFS_QMOPT_ENOSPC)) ==
824 XFS_TRANS_DQ_RES_BLKS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825
826 /*
827 * Reserve nblks against these dquots, with trans as the mediator.
828 */
Christoph Hellwig7d095252009-06-08 15:33:32 +0200829 return xfs_trans_reserve_quota_bydquots(tp, mp,
830 ip->i_udquot, ip->i_gdquot,
831 nblks, ninos, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700832}
833
834/*
835 * This routine is called to allocate a quotaoff log item.
836 */
837xfs_qoff_logitem_t *
838xfs_trans_get_qoff_item(
839 xfs_trans_t *tp,
840 xfs_qoff_logitem_t *startqoff,
841 uint flags)
842{
843 xfs_qoff_logitem_t *q;
844
845 ASSERT(tp != NULL);
846
847 q = xfs_qm_qoff_logitem_init(tp->t_mountp, startqoff, flags);
848 ASSERT(q != NULL);
849
850 /*
851 * Get a log_item_desc to point at the new item.
852 */
Christoph Hellwige98c4142010-06-23 18:11:15 +1000853 xfs_trans_add_item(tp, &q->qql_item);
854 return q;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700855}
856
857
858/*
859 * This is called to mark the quotaoff logitem as needing
860 * to be logged when the transaction is committed. The logitem must
861 * already be associated with the given transaction.
862 */
863void
864xfs_trans_log_quotaoff_item(
865 xfs_trans_t *tp,
866 xfs_qoff_logitem_t *qlp)
867{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700868 tp->t_flags |= XFS_TRANS_DIRTY;
Christoph Hellwige98c4142010-06-23 18:11:15 +1000869 qlp->qql_item.li_desc->lid_flags |= XFS_LID_DIRTY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870}
871
872STATIC void
873xfs_trans_alloc_dqinfo(
874 xfs_trans_t *tp)
875{
Christoph Hellwiga05931c2012-03-13 08:52:37 +0000876 tp->t_dqinfo = kmem_zone_zalloc(xfs_qm_dqtrxzone, KM_SLEEP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700877}
878
Christoph Hellwig7d095252009-06-08 15:33:32 +0200879void
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880xfs_trans_free_dqinfo(
881 xfs_trans_t *tp)
882{
883 if (!tp->t_dqinfo)
884 return;
Christoph Hellwiga05931c2012-03-13 08:52:37 +0000885 kmem_zone_free(xfs_qm_dqtrxzone, tp->t_dqinfo);
Christoph Hellwig7d095252009-06-08 15:33:32 +0200886 tp->t_dqinfo = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887}