Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
4ce3121f NS |
2 | * Copyright (c) 2000-2002 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" | |
70a9883c | 20 | #include "xfs_shared.h" |
239880ef DC |
21 | #include "xfs_format.h" |
22 | #include "xfs_log_format.h" | |
23 | #include "xfs_trans_resv.h" | |
1da177e4 | 24 | #include "xfs_mount.h" |
1da177e4 | 25 | #include "xfs_inode.h" |
1da177e4 | 26 | #include "xfs_error.h" |
239880ef | 27 | #include "xfs_trans.h" |
1da177e4 | 28 | #include "xfs_trans_priv.h" |
a4fbe6ab | 29 | #include "xfs_quota.h" |
1da177e4 LT |
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 | { | |
191f8488 | 44 | ASSERT(dqp->q_transp != tp); |
1da177e4 | 45 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
e98c414f | 46 | ASSERT(dqp->q_logitem.qli_dquot == dqp); |
1da177e4 LT |
47 | |
48 | /* | |
49 | * Get a log_item_desc to point at the new item. | |
50 | */ | |
e98c414f | 51 | xfs_trans_add_item(tp, &dqp->q_logitem.qli_item); |
1da177e4 LT |
52 | |
53 | /* | |
f3ca8738 | 54 | * Initialize d_transp so we can later determine if this dquot is |
1da177e4 LT |
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 | { | |
191f8488 | 76 | ASSERT(dqp->q_transp == tp); |
1da177e4 LT |
77 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
78 | ||
1da177e4 | 79 | tp->t_flags |= XFS_TRANS_DIRTY; |
e98c414f | 80 | dqp->q_logitem.qli_item.li_desc->lid_flags |= XFS_LID_DIRTY; |
1da177e4 LT |
81 | } |
82 | ||
83 | /* | |
84 | * Carry forward whatever is left of the quota blk reservation to | |
85 | * the spanky new transaction | |
86 | */ | |
7d095257 | 87 | void |
1da177e4 LT |
88 | xfs_trans_dup_dqinfo( |
89 | xfs_trans_t *otp, | |
90 | xfs_trans_t *ntp) | |
91 | { | |
92 | xfs_dqtrx_t *oq, *nq; | |
339e4f66 | 93 | int i, j; |
1da177e4 | 94 | xfs_dqtrx_t *oqa, *nqa; |
7f884dc1 | 95 | ulong blk_res_used; |
1da177e4 LT |
96 | |
97 | if (!otp->t_dqinfo) | |
98 | return; | |
99 | ||
100 | xfs_trans_alloc_dqinfo(ntp); | |
1da177e4 LT |
101 | |
102 | /* | |
103 | * Because the quota blk reservation is carried forward, | |
104 | * it is also necessary to carry forward the DQ_DIRTY flag. | |
105 | */ | |
339e4f66 | 106 | if (otp->t_flags & XFS_TRANS_DQ_DIRTY) |
1da177e4 LT |
107 | ntp->t_flags |= XFS_TRANS_DQ_DIRTY; |
108 | ||
0e6436d9 CS |
109 | for (j = 0; j < XFS_QM_TRANS_DQTYPES; j++) { |
110 | oqa = otp->t_dqinfo->dqs[j]; | |
111 | nqa = ntp->t_dqinfo->dqs[j]; | |
1da177e4 | 112 | for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { |
7f884dc1 BF |
113 | blk_res_used = 0; |
114 | ||
1da177e4 LT |
115 | if (oqa[i].qt_dquot == NULL) |
116 | break; | |
117 | oq = &oqa[i]; | |
118 | nq = &nqa[i]; | |
119 | ||
7f884dc1 BF |
120 | if (oq->qt_blk_res && oq->qt_bcount_delta > 0) |
121 | blk_res_used = oq->qt_bcount_delta; | |
122 | ||
1da177e4 LT |
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 | */ | |
7f884dc1 BF |
130 | nq->qt_blk_res = oq->qt_blk_res - blk_res_used; |
131 | oq->qt_blk_res = blk_res_used; | |
1da177e4 LT |
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 | } | |
1da177e4 LT |
141 | } |
142 | } | |
143 | ||
144 | /* | |
145 | * Wrap around mod_dquot to account for both user and group quotas. | |
146 | */ | |
7d095257 | 147 | void |
1da177e4 LT |
148 | xfs_trans_mod_dquot_byino( |
149 | xfs_trans_t *tp, | |
150 | xfs_inode_t *ip, | |
151 | uint field, | |
152 | long delta) | |
153 | { | |
7d095257 | 154 | xfs_mount_t *mp = tp->t_mountp; |
1da177e4 | 155 | |
7d095257 CH |
156 | if (!XFS_IS_QUOTA_RUNNING(mp) || |
157 | !XFS_IS_QUOTA_ON(mp) || | |
9cad19d2 | 158 | xfs_is_quota_inode(&mp->m_sb, ip->i_ino)) |
1da177e4 LT |
159 | return; |
160 | ||
161 | if (tp->t_dqinfo == NULL) | |
162 | xfs_trans_alloc_dqinfo(tp); | |
163 | ||
c8ad20ff | 164 | if (XFS_IS_UQUOTA_ON(mp) && ip->i_udquot) |
1da177e4 | 165 | (void) xfs_trans_mod_dquot(tp, ip->i_udquot, field, delta); |
92f8ff73 | 166 | if (XFS_IS_GQUOTA_ON(mp) && ip->i_gdquot) |
1da177e4 | 167 | (void) xfs_trans_mod_dquot(tp, ip->i_gdquot, field, delta); |
92f8ff73 CS |
168 | if (XFS_IS_PQUOTA_ON(mp) && ip->i_pdquot) |
169 | (void) xfs_trans_mod_dquot(tp, ip->i_pdquot, field, delta); | |
1da177e4 LT |
170 | } |
171 | ||
113a5683 | 172 | STATIC struct xfs_dqtrx * |
1da177e4 | 173 | xfs_trans_get_dqtrx( |
113a5683 CS |
174 | struct xfs_trans *tp, |
175 | struct xfs_dquot *dqp) | |
1da177e4 | 176 | { |
113a5683 CS |
177 | int i; |
178 | struct xfs_dqtrx *qa; | |
1da177e4 | 179 | |
0e6436d9 CS |
180 | if (XFS_QM_ISUDQ(dqp)) |
181 | qa = tp->t_dqinfo->dqs[XFS_QM_TRANS_USR]; | |
92f8ff73 | 182 | else if (XFS_QM_ISGDQ(dqp)) |
0e6436d9 | 183 | qa = tp->t_dqinfo->dqs[XFS_QM_TRANS_GRP]; |
92f8ff73 CS |
184 | else if (XFS_QM_ISPDQ(dqp)) |
185 | qa = tp->t_dqinfo->dqs[XFS_QM_TRANS_PRJ]; | |
186 | else | |
187 | return NULL; | |
1da177e4 | 188 | |
191f8488 | 189 | for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { |
1da177e4 | 190 | if (qa[i].qt_dquot == NULL || |
191f8488 CH |
191 | qa[i].qt_dquot == dqp) |
192 | return &qa[i]; | |
1da177e4 LT |
193 | } |
194 | ||
191f8488 | 195 | return NULL; |
1da177e4 LT |
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); | |
7d095257 | 214 | ASSERT(XFS_IS_QUOTA_RUNNING(tp->t_mountp)); |
1da177e4 LT |
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: | |
1da177e4 LT |
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 | /* | |
b0a9dab7 DC |
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 | |
10f73d27 CH |
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. | |
1da177e4 LT |
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 | */ | |
7d095257 | 327 | void |
1da177e4 | 328 | xfs_trans_apply_dquot_deltas( |
4b6eae2e | 329 | struct xfs_trans *tp) |
1da177e4 LT |
330 | { |
331 | int i, j; | |
4b6eae2e BF |
332 | struct xfs_dquot *dqp; |
333 | struct xfs_dqtrx *qtrx, *qa; | |
334 | struct xfs_disk_dquot *d; | |
1da177e4 LT |
335 | long totalbdelta; |
336 | long totalrtbdelta; | |
337 | ||
7d095257 | 338 | if (!(tp->t_flags & XFS_TRANS_DQ_DIRTY)) |
1da177e4 LT |
339 | return; |
340 | ||
341 | ASSERT(tp->t_dqinfo); | |
0e6436d9 CS |
342 | for (j = 0; j < XFS_QM_TRANS_DQTYPES; j++) { |
343 | qa = tp->t_dqinfo->dqs[j]; | |
344 | if (qa[0].qt_dquot == NULL) | |
1da177e4 | 345 | continue; |
1da177e4 LT |
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)); | |
191f8488 | 362 | ASSERT(dqp->q_transp == tp); |
1da177e4 LT |
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; | |
ea15ab3c | 386 | #ifdef DEBUG |
1da177e4 | 387 | if (totalbdelta < 0) |
1149d96a | 388 | ASSERT(be64_to_cpu(d->d_bcount) >= |
ea15ab3c | 389 | -totalbdelta); |
1da177e4 LT |
390 | |
391 | if (totalrtbdelta < 0) | |
1149d96a | 392 | ASSERT(be64_to_cpu(d->d_rtbcount) >= |
ea15ab3c | 393 | -totalrtbdelta); |
1da177e4 LT |
394 | |
395 | if (qtrx->qt_icount_delta < 0) | |
1149d96a | 396 | ASSERT(be64_to_cpu(d->d_icount) >= |
ea15ab3c | 397 | -qtrx->qt_icount_delta); |
1da177e4 LT |
398 | #endif |
399 | if (totalbdelta) | |
413d57c9 | 400 | be64_add_cpu(&d->d_bcount, (xfs_qcnt_t)totalbdelta); |
1da177e4 LT |
401 | |
402 | if (qtrx->qt_icount_delta) | |
413d57c9 | 403 | be64_add_cpu(&d->d_icount, (xfs_qcnt_t)qtrx->qt_icount_delta); |
1da177e4 LT |
404 | |
405 | if (totalrtbdelta) | |
413d57c9 | 406 | be64_add_cpu(&d->d_rtbcount, (xfs_qcnt_t)totalrtbdelta); |
1da177e4 LT |
407 | |
408 | /* | |
409 | * Get any default limits in use. | |
410 | * Start/reset the timer(s) if needed. | |
411 | */ | |
412 | if (d->d_id) { | |
4b6eae2e | 413 | xfs_qm_adjust_dqlimits(tp->t_mountp, dqp); |
1da177e4 LT |
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) { | |
7f884dc1 BF |
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) | |
1da177e4 LT |
435 | dqp->q_res_bcount -= (xfs_qcnt_t) |
436 | (qtrx->qt_blk_res - | |
7f884dc1 | 437 | blk_res_used); |
1da177e4 LT |
438 | else |
439 | dqp->q_res_bcount -= (xfs_qcnt_t) | |
7f884dc1 | 440 | (blk_res_used - |
1da177e4 LT |
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) { | |
06d10dd9 | 460 | if (qtrx->qt_rtblk_res != qtrx->qt_rtblk_res_used) { |
1da177e4 LT |
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 | ||
1da177e4 | 493 | ASSERT(dqp->q_res_bcount >= |
1149d96a | 494 | be64_to_cpu(dqp->q_core.d_bcount)); |
1da177e4 | 495 | ASSERT(dqp->q_res_icount >= |
1149d96a | 496 | be64_to_cpu(dqp->q_core.d_icount)); |
1da177e4 | 497 | ASSERT(dqp->q_res_rtbcount >= |
1149d96a | 498 | be64_to_cpu(dqp->q_core.d_rtbcount)); |
1da177e4 | 499 | } |
1da177e4 LT |
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 | */ | |
7d095257 | 510 | void |
1da177e4 LT |
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; | |
667a9291 | 517 | bool locked; |
1da177e4 LT |
518 | |
519 | if (!tp->t_dqinfo || !(tp->t_flags & XFS_TRANS_DQ_DIRTY)) | |
520 | return; | |
521 | ||
0e6436d9 CS |
522 | for (j = 0; j < XFS_QM_TRANS_DQTYPES; j++) { |
523 | qa = tp->t_dqinfo->dqs[j]; | |
1da177e4 | 524 | |
1da177e4 LT |
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 | */ | |
667a9291 | 538 | locked = false; |
1da177e4 LT |
539 | if (qtrx->qt_blk_res) { |
540 | xfs_dqlock(dqp); | |
667a9291 | 541 | locked = true; |
1da177e4 LT |
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); | |
667a9291 | 548 | locked = true; |
1da177e4 LT |
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); | |
667a9291 | 557 | locked = true; |
1da177e4 LT |
558 | } |
559 | dqp->q_res_rtbcount -= | |
560 | (xfs_qcnt_t)qtrx->qt_rtblk_res; | |
561 | } | |
562 | if (locked) | |
563 | xfs_dqunlock(dqp); | |
564 | ||
565 | } | |
1da177e4 LT |
566 | } |
567 | } | |
568 | ||
a210c1aa CH |
569 | STATIC void |
570 | xfs_quota_warn( | |
571 | struct xfs_mount *mp, | |
572 | struct xfs_dquot *dqp, | |
573 | int type) | |
574 | { | |
ffc671f1 MY |
575 | enum quota_type qtype; |
576 | ||
a210c1aa | 577 | if (dqp->dq_flags & XFS_DQ_PROJ) |
ffc671f1 MY |
578 | qtype = PRJQUOTA; |
579 | else if (dqp->dq_flags & XFS_DQ_USER) | |
580 | qtype = USRQUOTA; | |
581 | else | |
582 | qtype = GRPQUOTA; | |
583 | ||
584 | quota_send_warning(make_kqid(&init_user_ns, qtype, | |
431f1974 EB |
585 | be32_to_cpu(dqp->q_core.d_id)), |
586 | mp->m_super->s_dev, type); | |
a210c1aa CH |
587 | } |
588 | ||
1da177e4 LT |
589 | /* |
590 | * This reserves disk blocks and inodes against a dquot. | |
591 | * Flags indicate if the dquot is to be locked here and also | |
592 | * if the blk reservation is for RT or regular blocks. | |
593 | * Sending in XFS_QMOPT_FORCE_RES flag skips the quota check. | |
1da177e4 LT |
594 | */ |
595 | STATIC int | |
596 | xfs_trans_dqresv( | |
597 | xfs_trans_t *tp, | |
598 | xfs_mount_t *mp, | |
599 | xfs_dquot_t *dqp, | |
600 | long nblks, | |
601 | long ninos, | |
602 | uint flags) | |
603 | { | |
1da177e4 LT |
604 | xfs_qcnt_t hardlimit; |
605 | xfs_qcnt_t softlimit; | |
06d10dd9 NS |
606 | time_t timer; |
607 | xfs_qwarncnt_t warns; | |
608 | xfs_qwarncnt_t warnlimit; | |
70b54376 | 609 | xfs_qcnt_t total_count; |
1da177e4 LT |
610 | xfs_qcnt_t *resbcountp; |
611 | xfs_quotainfo_t *q = mp->m_quotainfo; | |
be607946 | 612 | struct xfs_def_quota *defq; |
1da177e4 | 613 | |
8e9b6e7f CH |
614 | |
615 | xfs_dqlock(dqp); | |
616 | ||
be607946 CM |
617 | defq = xfs_get_defquota(dqp, q); |
618 | ||
1da177e4 | 619 | if (flags & XFS_TRANS_DQ_RES_BLKS) { |
1149d96a | 620 | hardlimit = be64_to_cpu(dqp->q_core.d_blk_hardlimit); |
1da177e4 | 621 | if (!hardlimit) |
be607946 | 622 | hardlimit = defq->bhardlimit; |
1149d96a | 623 | softlimit = be64_to_cpu(dqp->q_core.d_blk_softlimit); |
1da177e4 | 624 | if (!softlimit) |
be607946 | 625 | softlimit = defq->bsoftlimit; |
1149d96a CH |
626 | timer = be32_to_cpu(dqp->q_core.d_btimer); |
627 | warns = be16_to_cpu(dqp->q_core.d_bwarns); | |
8a7b8a89 | 628 | warnlimit = dqp->q_mount->m_quotainfo->qi_bwarnlimit; |
1da177e4 LT |
629 | resbcountp = &dqp->q_res_bcount; |
630 | } else { | |
631 | ASSERT(flags & XFS_TRANS_DQ_RES_RTBLKS); | |
1149d96a | 632 | hardlimit = be64_to_cpu(dqp->q_core.d_rtb_hardlimit); |
1da177e4 | 633 | if (!hardlimit) |
be607946 | 634 | hardlimit = defq->rtbhardlimit; |
1149d96a | 635 | softlimit = be64_to_cpu(dqp->q_core.d_rtb_softlimit); |
1da177e4 | 636 | if (!softlimit) |
be607946 | 637 | softlimit = defq->rtbsoftlimit; |
1149d96a CH |
638 | timer = be32_to_cpu(dqp->q_core.d_rtbtimer); |
639 | warns = be16_to_cpu(dqp->q_core.d_rtbwarns); | |
8a7b8a89 | 640 | warnlimit = dqp->q_mount->m_quotainfo->qi_rtbwarnlimit; |
1da177e4 LT |
641 | resbcountp = &dqp->q_res_rtbcount; |
642 | } | |
1da177e4 LT |
643 | |
644 | if ((flags & XFS_QMOPT_FORCE_RES) == 0 && | |
645 | dqp->q_core.d_id && | |
e6d29426 | 646 | ((XFS_IS_UQUOTA_ENFORCED(dqp->q_mount) && XFS_QM_ISUDQ(dqp)) || |
83e782e1 CS |
647 | (XFS_IS_GQUOTA_ENFORCED(dqp->q_mount) && XFS_QM_ISGDQ(dqp)) || |
648 | (XFS_IS_PQUOTA_ENFORCED(dqp->q_mount) && XFS_QM_ISPDQ(dqp)))) { | |
1da177e4 LT |
649 | if (nblks > 0) { |
650 | /* | |
651 | * dquot is locked already. See if we'd go over the | |
652 | * hardlimit or exceed the timelimit if we allocate | |
653 | * nblks. | |
654 | */ | |
70b54376 MH |
655 | total_count = *resbcountp + nblks; |
656 | if (hardlimit && total_count > hardlimit) { | |
a210c1aa | 657 | xfs_quota_warn(mp, dqp, QUOTA_NL_BHARDWARN); |
1da177e4 | 658 | goto error_return; |
a210c1aa | 659 | } |
70b54376 | 660 | if (softlimit && total_count > softlimit) { |
a210c1aa CH |
661 | if ((timer != 0 && get_seconds() > timer) || |
662 | (warns != 0 && warns >= warnlimit)) { | |
663 | xfs_quota_warn(mp, dqp, | |
664 | QUOTA_NL_BSOFTLONGWARN); | |
665 | goto error_return; | |
666 | } | |
667 | ||
668 | xfs_quota_warn(mp, dqp, QUOTA_NL_BSOFTWARN); | |
669 | } | |
1da177e4 LT |
670 | } |
671 | if (ninos > 0) { | |
70b54376 | 672 | total_count = be64_to_cpu(dqp->q_core.d_icount) + ninos; |
1149d96a CH |
673 | timer = be32_to_cpu(dqp->q_core.d_itimer); |
674 | warns = be16_to_cpu(dqp->q_core.d_iwarns); | |
8a7b8a89 | 675 | warnlimit = dqp->q_mount->m_quotainfo->qi_iwarnlimit; |
1149d96a | 676 | hardlimit = be64_to_cpu(dqp->q_core.d_ino_hardlimit); |
1da177e4 | 677 | if (!hardlimit) |
be607946 | 678 | hardlimit = defq->ihardlimit; |
1149d96a | 679 | softlimit = be64_to_cpu(dqp->q_core.d_ino_softlimit); |
1da177e4 | 680 | if (!softlimit) |
be607946 | 681 | softlimit = defq->isoftlimit; |
4d1f88d7 | 682 | |
70b54376 | 683 | if (hardlimit && total_count > hardlimit) { |
a210c1aa | 684 | xfs_quota_warn(mp, dqp, QUOTA_NL_IHARDWARN); |
1da177e4 | 685 | goto error_return; |
a210c1aa | 686 | } |
70b54376 | 687 | if (softlimit && total_count > softlimit) { |
a210c1aa CH |
688 | if ((timer != 0 && get_seconds() > timer) || |
689 | (warns != 0 && warns >= warnlimit)) { | |
690 | xfs_quota_warn(mp, dqp, | |
691 | QUOTA_NL_ISOFTLONGWARN); | |
692 | goto error_return; | |
693 | } | |
694 | xfs_quota_warn(mp, dqp, QUOTA_NL_ISOFTWARN); | |
695 | } | |
1da177e4 LT |
696 | } |
697 | } | |
698 | ||
699 | /* | |
700 | * Change the reservation, but not the actual usage. | |
701 | * Note that q_res_bcount = q_core.d_bcount + resv | |
702 | */ | |
703 | (*resbcountp) += (xfs_qcnt_t)nblks; | |
704 | if (ninos != 0) | |
705 | dqp->q_res_icount += (xfs_qcnt_t)ninos; | |
706 | ||
707 | /* | |
708 | * note the reservation amt in the trans struct too, | |
709 | * so that the transaction knows how much was reserved by | |
710 | * it against this particular dquot. | |
711 | * We don't do this when we are reserving for a delayed allocation, | |
712 | * because we don't have the luxury of a transaction envelope then. | |
713 | */ | |
714 | if (tp) { | |
715 | ASSERT(tp->t_dqinfo); | |
716 | ASSERT(flags & XFS_QMOPT_RESBLK_MASK); | |
717 | if (nblks != 0) | |
718 | xfs_trans_mod_dquot(tp, dqp, | |
719 | flags & XFS_QMOPT_RESBLK_MASK, | |
720 | nblks); | |
721 | if (ninos != 0) | |
722 | xfs_trans_mod_dquot(tp, dqp, | |
723 | XFS_TRANS_DQ_RES_INOS, | |
724 | ninos); | |
725 | } | |
1149d96a CH |
726 | ASSERT(dqp->q_res_bcount >= be64_to_cpu(dqp->q_core.d_bcount)); |
727 | ASSERT(dqp->q_res_rtbcount >= be64_to_cpu(dqp->q_core.d_rtbcount)); | |
728 | ASSERT(dqp->q_res_icount >= be64_to_cpu(dqp->q_core.d_icount)); | |
1da177e4 | 729 | |
4d1f88d7 CH |
730 | xfs_dqunlock(dqp); |
731 | return 0; | |
732 | ||
1da177e4 | 733 | error_return: |
8e9b6e7f | 734 | xfs_dqunlock(dqp); |
4d1f88d7 | 735 | if (flags & XFS_QMOPT_ENOSPC) |
2451337d DC |
736 | return -ENOSPC; |
737 | return -EDQUOT; | |
1da177e4 LT |
738 | } |
739 | ||
740 | ||
741 | /* | |
9a2a7de2 | 742 | * Given dquot(s), make disk block and/or inode reservations against them. |
92f8ff73 CS |
743 | * The fact that this does the reservation against user, group and |
744 | * project quotas is important, because this follows a all-or-nothing | |
1da177e4 LT |
745 | * approach. |
746 | * | |
8e9b6e7f | 747 | * flags = XFS_QMOPT_FORCE_RES evades limit enforcement. Used by chown. |
9a2a7de2 | 748 | * XFS_QMOPT_ENOSPC returns ENOSPC not EDQUOT. Used by pquota. |
1da177e4 LT |
749 | * XFS_TRANS_DQ_RES_BLKS reserves regular disk blocks |
750 | * XFS_TRANS_DQ_RES_RTBLKS reserves realtime disk blocks | |
751 | * dquots are unlocked on return, if they were not locked by caller. | |
752 | */ | |
753 | int | |
754 | xfs_trans_reserve_quota_bydquots( | |
113a5683 CS |
755 | struct xfs_trans *tp, |
756 | struct xfs_mount *mp, | |
757 | struct xfs_dquot *udqp, | |
758 | struct xfs_dquot *gdqp, | |
92f8ff73 | 759 | struct xfs_dquot *pdqp, |
113a5683 CS |
760 | long nblks, |
761 | long ninos, | |
762 | uint flags) | |
1da177e4 | 763 | { |
113a5683 | 764 | int error; |
1da177e4 | 765 | |
7d095257 | 766 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
9a2a7de2 | 767 | return 0; |
1da177e4 LT |
768 | |
769 | if (tp && tp->t_dqinfo == NULL) | |
770 | xfs_trans_alloc_dqinfo(tp); | |
771 | ||
772 | ASSERT(flags & XFS_QMOPT_RESBLK_MASK); | |
1da177e4 LT |
773 | |
774 | if (udqp) { | |
9a2a7de2 NS |
775 | error = xfs_trans_dqresv(tp, mp, udqp, nblks, ninos, |
776 | (flags & ~XFS_QMOPT_ENOSPC)); | |
777 | if (error) | |
778 | return error; | |
1da177e4 LT |
779 | } |
780 | ||
781 | if (gdqp) { | |
9a2a7de2 | 782 | error = xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos, flags); |
113a5683 CS |
783 | if (error) |
784 | goto unwind_usr; | |
1da177e4 LT |
785 | } |
786 | ||
92f8ff73 CS |
787 | if (pdqp) { |
788 | error = xfs_trans_dqresv(tp, mp, pdqp, nblks, ninos, flags); | |
789 | if (error) | |
790 | goto unwind_grp; | |
791 | } | |
792 | ||
1da177e4 | 793 | /* |
c41564b5 | 794 | * Didn't change anything critical, so, no need to log |
1da177e4 | 795 | */ |
9a2a7de2 | 796 | return 0; |
113a5683 | 797 | |
92f8ff73 CS |
798 | unwind_grp: |
799 | flags |= XFS_QMOPT_FORCE_RES; | |
800 | if (gdqp) | |
801 | xfs_trans_dqresv(tp, mp, gdqp, -nblks, -ninos, flags); | |
113a5683 CS |
802 | unwind_usr: |
803 | flags |= XFS_QMOPT_FORCE_RES; | |
804 | if (udqp) | |
805 | xfs_trans_dqresv(tp, mp, udqp, -nblks, -ninos, flags); | |
806 | return error; | |
1da177e4 LT |
807 | } |
808 | ||
809 | ||
810 | /* | |
811 | * Lock the dquot and change the reservation if we can. | |
812 | * This doesn't change the actual usage, just the reservation. | |
813 | * The inode sent in is locked. | |
1da177e4 | 814 | */ |
7d095257 | 815 | int |
1da177e4 | 816 | xfs_trans_reserve_quota_nblks( |
7d095257 CH |
817 | struct xfs_trans *tp, |
818 | struct xfs_inode *ip, | |
819 | long nblks, | |
820 | long ninos, | |
821 | uint flags) | |
1da177e4 | 822 | { |
7d095257 | 823 | struct xfs_mount *mp = ip->i_mount; |
1da177e4 | 824 | |
7d095257 | 825 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
9a2a7de2 NS |
826 | return 0; |
827 | if (XFS_IS_PQUOTA_ON(mp)) | |
828 | flags |= XFS_QMOPT_ENOSPC; | |
1da177e4 | 829 | |
9cad19d2 | 830 | ASSERT(!xfs_is_quota_inode(&mp->m_sb, ip->i_ino)); |
1da177e4 | 831 | |
579aa9ca | 832 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
9a2a7de2 NS |
833 | ASSERT((flags & ~(XFS_QMOPT_FORCE_RES | XFS_QMOPT_ENOSPC)) == |
834 | XFS_TRANS_DQ_RES_RTBLKS || | |
835 | (flags & ~(XFS_QMOPT_FORCE_RES | XFS_QMOPT_ENOSPC)) == | |
836 | XFS_TRANS_DQ_RES_BLKS); | |
1da177e4 LT |
837 | |
838 | /* | |
839 | * Reserve nblks against these dquots, with trans as the mediator. | |
840 | */ | |
7d095257 CH |
841 | return xfs_trans_reserve_quota_bydquots(tp, mp, |
842 | ip->i_udquot, ip->i_gdquot, | |
92f8ff73 | 843 | ip->i_pdquot, |
7d095257 | 844 | nblks, ninos, flags); |
1da177e4 LT |
845 | } |
846 | ||
847 | /* | |
848 | * This routine is called to allocate a quotaoff log item. | |
849 | */ | |
850 | xfs_qoff_logitem_t * | |
851 | xfs_trans_get_qoff_item( | |
852 | xfs_trans_t *tp, | |
853 | xfs_qoff_logitem_t *startqoff, | |
854 | uint flags) | |
855 | { | |
856 | xfs_qoff_logitem_t *q; | |
857 | ||
858 | ASSERT(tp != NULL); | |
859 | ||
860 | q = xfs_qm_qoff_logitem_init(tp->t_mountp, startqoff, flags); | |
861 | ASSERT(q != NULL); | |
862 | ||
863 | /* | |
864 | * Get a log_item_desc to point at the new item. | |
865 | */ | |
e98c414f CH |
866 | xfs_trans_add_item(tp, &q->qql_item); |
867 | return q; | |
1da177e4 LT |
868 | } |
869 | ||
870 | ||
871 | /* | |
872 | * This is called to mark the quotaoff logitem as needing | |
873 | * to be logged when the transaction is committed. The logitem must | |
874 | * already be associated with the given transaction. | |
875 | */ | |
876 | void | |
877 | xfs_trans_log_quotaoff_item( | |
878 | xfs_trans_t *tp, | |
879 | xfs_qoff_logitem_t *qlp) | |
880 | { | |
1da177e4 | 881 | tp->t_flags |= XFS_TRANS_DIRTY; |
e98c414f | 882 | qlp->qql_item.li_desc->lid_flags |= XFS_LID_DIRTY; |
1da177e4 LT |
883 | } |
884 | ||
885 | STATIC void | |
886 | xfs_trans_alloc_dqinfo( | |
887 | xfs_trans_t *tp) | |
888 | { | |
a05931ce | 889 | tp->t_dqinfo = kmem_zone_zalloc(xfs_qm_dqtrxzone, KM_SLEEP); |
1da177e4 LT |
890 | } |
891 | ||
7d095257 | 892 | void |
1da177e4 LT |
893 | xfs_trans_free_dqinfo( |
894 | xfs_trans_t *tp) | |
895 | { | |
896 | if (!tp->t_dqinfo) | |
897 | return; | |
a05931ce | 898 | kmem_zone_free(xfs_qm_dqtrxzone, tp->t_dqinfo); |
7d095257 | 899 | tp->t_dqinfo = NULL; |
1da177e4 | 900 | } |