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0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
4ce3121f NS |
3 | * Copyright (c) 2000-2002 Silicon Graphics, Inc. |
4 | * All Rights Reserved. | |
1da177e4 | 5 | */ |
1da177e4 LT |
6 | #include "xfs.h" |
7 | #include "xfs_fs.h" | |
70a9883c | 8 | #include "xfs_shared.h" |
239880ef DC |
9 | #include "xfs_format.h" |
10 | #include "xfs_log_format.h" | |
11 | #include "xfs_trans_resv.h" | |
1da177e4 | 12 | #include "xfs_mount.h" |
1da177e4 | 13 | #include "xfs_inode.h" |
239880ef | 14 | #include "xfs_trans.h" |
1da177e4 | 15 | #include "xfs_trans_priv.h" |
a4fbe6ab | 16 | #include "xfs_quota.h" |
1da177e4 | 17 | #include "xfs_qm.h" |
2cb91bab | 18 | #include "xfs_trace.h" |
2a4bdfa8 | 19 | #include "xfs_error.h" |
1da177e4 LT |
20 | |
21 | STATIC void xfs_trans_alloc_dqinfo(xfs_trans_t *); | |
22 | ||
23 | /* | |
24 | * Add the locked dquot to the transaction. | |
25 | * The dquot must be locked, and it cannot be associated with any | |
26 | * transaction. | |
27 | */ | |
28 | void | |
29 | xfs_trans_dqjoin( | |
aefe69a4 PR |
30 | struct xfs_trans *tp, |
31 | struct xfs_dquot *dqp) | |
1da177e4 | 32 | { |
1da177e4 | 33 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
e98c414f | 34 | ASSERT(dqp->q_logitem.qli_dquot == dqp); |
1da177e4 LT |
35 | |
36 | /* | |
37 | * Get a log_item_desc to point at the new item. | |
38 | */ | |
e98c414f | 39 | xfs_trans_add_item(tp, &dqp->q_logitem.qli_item); |
1da177e4 LT |
40 | } |
41 | ||
1da177e4 LT |
42 | /* |
43 | * This is called to mark the dquot as needing | |
44 | * to be logged when the transaction is committed. The dquot must | |
45 | * already be associated with the given transaction. | |
46 | * Note that it marks the entire transaction as dirty. In the ordinary | |
47 | * case, this gets called via xfs_trans_commit, after the transaction | |
48 | * is already dirty. However, there's nothing stop this from getting | |
49 | * called directly, as done by xfs_qm_scall_setqlim. Hence, the TRANS_DIRTY | |
50 | * flag. | |
51 | */ | |
52 | void | |
53 | xfs_trans_log_dquot( | |
aefe69a4 PR |
54 | struct xfs_trans *tp, |
55 | struct xfs_dquot *dqp) | |
1da177e4 | 56 | { |
1da177e4 LT |
57 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
58 | ||
4ea1ff3b DW |
59 | /* Upgrade the dquot to bigtime format if possible. */ |
60 | if (dqp->q_id != 0 && | |
38c26bfd | 61 | xfs_has_bigtime(tp->t_mountp) && |
4ea1ff3b DW |
62 | !(dqp->q_type & XFS_DQTYPE_BIGTIME)) |
63 | dqp->q_type |= XFS_DQTYPE_BIGTIME; | |
64 | ||
1da177e4 | 65 | tp->t_flags |= XFS_TRANS_DIRTY; |
e6631f85 | 66 | set_bit(XFS_LI_DIRTY, &dqp->q_logitem.qli_item.li_flags); |
1da177e4 LT |
67 | } |
68 | ||
69 | /* | |
70 | * Carry forward whatever is left of the quota blk reservation to | |
71 | * the spanky new transaction | |
72 | */ | |
7d095257 | 73 | void |
1da177e4 | 74 | xfs_trans_dup_dqinfo( |
078f4a7d DW |
75 | struct xfs_trans *otp, |
76 | struct xfs_trans *ntp) | |
1da177e4 | 77 | { |
078f4a7d DW |
78 | struct xfs_dqtrx *oq, *nq; |
79 | int i, j; | |
80 | struct xfs_dqtrx *oqa, *nqa; | |
81 | uint64_t blk_res_used; | |
1da177e4 LT |
82 | |
83 | if (!otp->t_dqinfo) | |
84 | return; | |
85 | ||
86 | xfs_trans_alloc_dqinfo(ntp); | |
1da177e4 | 87 | |
0e6436d9 CS |
88 | for (j = 0; j < XFS_QM_TRANS_DQTYPES; j++) { |
89 | oqa = otp->t_dqinfo->dqs[j]; | |
90 | nqa = ntp->t_dqinfo->dqs[j]; | |
1da177e4 | 91 | for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { |
7f884dc1 BF |
92 | blk_res_used = 0; |
93 | ||
1da177e4 LT |
94 | if (oqa[i].qt_dquot == NULL) |
95 | break; | |
96 | oq = &oqa[i]; | |
97 | nq = &nqa[i]; | |
98 | ||
7f884dc1 BF |
99 | if (oq->qt_blk_res && oq->qt_bcount_delta > 0) |
100 | blk_res_used = oq->qt_bcount_delta; | |
101 | ||
1da177e4 LT |
102 | nq->qt_dquot = oq->qt_dquot; |
103 | nq->qt_bcount_delta = nq->qt_icount_delta = 0; | |
104 | nq->qt_rtbcount_delta = 0; | |
105 | ||
106 | /* | |
107 | * Transfer whatever is left of the reservations. | |
108 | */ | |
7f884dc1 BF |
109 | nq->qt_blk_res = oq->qt_blk_res - blk_res_used; |
110 | oq->qt_blk_res = blk_res_used; | |
1da177e4 LT |
111 | |
112 | nq->qt_rtblk_res = oq->qt_rtblk_res - | |
113 | oq->qt_rtblk_res_used; | |
114 | oq->qt_rtblk_res = oq->qt_rtblk_res_used; | |
115 | ||
116 | nq->qt_ino_res = oq->qt_ino_res - oq->qt_ino_res_used; | |
117 | oq->qt_ino_res = oq->qt_ino_res_used; | |
118 | ||
119 | } | |
1da177e4 LT |
120 | } |
121 | } | |
122 | ||
123 | /* | |
124 | * Wrap around mod_dquot to account for both user and group quotas. | |
125 | */ | |
7d095257 | 126 | void |
1da177e4 LT |
127 | xfs_trans_mod_dquot_byino( |
128 | xfs_trans_t *tp, | |
129 | xfs_inode_t *ip, | |
130 | uint field, | |
903b1fc2 | 131 | int64_t delta) |
1da177e4 | 132 | { |
7d095257 | 133 | xfs_mount_t *mp = tp->t_mountp; |
1da177e4 | 134 | |
149e53af | 135 | if (!XFS_IS_QUOTA_ON(mp) || |
9cad19d2 | 136 | xfs_is_quota_inode(&mp->m_sb, ip->i_ino)) |
1da177e4 LT |
137 | return; |
138 | ||
c8ad20ff | 139 | if (XFS_IS_UQUOTA_ON(mp) && ip->i_udquot) |
1da177e4 | 140 | (void) xfs_trans_mod_dquot(tp, ip->i_udquot, field, delta); |
92f8ff73 | 141 | if (XFS_IS_GQUOTA_ON(mp) && ip->i_gdquot) |
1da177e4 | 142 | (void) xfs_trans_mod_dquot(tp, ip->i_gdquot, field, delta); |
92f8ff73 CS |
143 | if (XFS_IS_PQUOTA_ON(mp) && ip->i_pdquot) |
144 | (void) xfs_trans_mod_dquot(tp, ip->i_pdquot, field, delta); | |
1da177e4 LT |
145 | } |
146 | ||
113a5683 | 147 | STATIC struct xfs_dqtrx * |
1da177e4 | 148 | xfs_trans_get_dqtrx( |
113a5683 CS |
149 | struct xfs_trans *tp, |
150 | struct xfs_dquot *dqp) | |
1da177e4 | 151 | { |
113a5683 CS |
152 | int i; |
153 | struct xfs_dqtrx *qa; | |
1da177e4 | 154 | |
00a342e4 DW |
155 | switch (xfs_dquot_type(dqp)) { |
156 | case XFS_DQTYPE_USER: | |
0e6436d9 | 157 | qa = tp->t_dqinfo->dqs[XFS_QM_TRANS_USR]; |
00a342e4 DW |
158 | break; |
159 | case XFS_DQTYPE_GROUP: | |
0e6436d9 | 160 | qa = tp->t_dqinfo->dqs[XFS_QM_TRANS_GRP]; |
00a342e4 DW |
161 | break; |
162 | case XFS_DQTYPE_PROJ: | |
92f8ff73 | 163 | qa = tp->t_dqinfo->dqs[XFS_QM_TRANS_PRJ]; |
00a342e4 DW |
164 | break; |
165 | default: | |
92f8ff73 | 166 | return NULL; |
00a342e4 | 167 | } |
1da177e4 | 168 | |
191f8488 | 169 | for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { |
1da177e4 | 170 | if (qa[i].qt_dquot == NULL || |
191f8488 CH |
171 | qa[i].qt_dquot == dqp) |
172 | return &qa[i]; | |
1da177e4 LT |
173 | } |
174 | ||
191f8488 | 175 | return NULL; |
1da177e4 LT |
176 | } |
177 | ||
178 | /* | |
179 | * Make the changes in the transaction structure. | |
180 | * The moral equivalent to xfs_trans_mod_sb(). | |
181 | * We don't touch any fields in the dquot, so we don't care | |
182 | * if it's locked or not (most of the time it won't be). | |
183 | */ | |
184 | void | |
185 | xfs_trans_mod_dquot( | |
078f4a7d DW |
186 | struct xfs_trans *tp, |
187 | struct xfs_dquot *dqp, | |
188 | uint field, | |
189 | int64_t delta) | |
1da177e4 | 190 | { |
078f4a7d | 191 | struct xfs_dqtrx *qtrx; |
1da177e4 LT |
192 | |
193 | ASSERT(tp); | |
149e53af | 194 | ASSERT(XFS_IS_QUOTA_ON(tp->t_mountp)); |
1da177e4 LT |
195 | qtrx = NULL; |
196 | ||
b3b29cd1 KX |
197 | if (!delta) |
198 | return; | |
199 | ||
1da177e4 LT |
200 | if (tp->t_dqinfo == NULL) |
201 | xfs_trans_alloc_dqinfo(tp); | |
202 | /* | |
203 | * Find either the first free slot or the slot that belongs | |
204 | * to this dquot. | |
205 | */ | |
206 | qtrx = xfs_trans_get_dqtrx(tp, dqp); | |
207 | ASSERT(qtrx); | |
208 | if (qtrx->qt_dquot == NULL) | |
209 | qtrx->qt_dquot = dqp; | |
210 | ||
b3b29cd1 KX |
211 | trace_xfs_trans_mod_dquot_before(qtrx); |
212 | trace_xfs_trans_mod_dquot(tp, dqp, field, delta); | |
2cb91bab | 213 | |
1da177e4 | 214 | switch (field) { |
e5b23740 KX |
215 | /* regular disk blk reservation */ |
216 | case XFS_TRANS_DQ_RES_BLKS: | |
903b1fc2 | 217 | qtrx->qt_blk_res += delta; |
1da177e4 LT |
218 | break; |
219 | ||
e5b23740 KX |
220 | /* inode reservation */ |
221 | case XFS_TRANS_DQ_RES_INOS: | |
903b1fc2 | 222 | qtrx->qt_ino_res += delta; |
1da177e4 LT |
223 | break; |
224 | ||
e5b23740 KX |
225 | /* disk blocks used. */ |
226 | case XFS_TRANS_DQ_BCOUNT: | |
1da177e4 LT |
227 | qtrx->qt_bcount_delta += delta; |
228 | break; | |
229 | ||
e5b23740 | 230 | case XFS_TRANS_DQ_DELBCOUNT: |
1da177e4 LT |
231 | qtrx->qt_delbcnt_delta += delta; |
232 | break; | |
233 | ||
e5b23740 KX |
234 | /* Inode Count */ |
235 | case XFS_TRANS_DQ_ICOUNT: | |
1da177e4 | 236 | if (qtrx->qt_ino_res && delta > 0) { |
903b1fc2 | 237 | qtrx->qt_ino_res_used += delta; |
1da177e4 LT |
238 | ASSERT(qtrx->qt_ino_res >= qtrx->qt_ino_res_used); |
239 | } | |
240 | qtrx->qt_icount_delta += delta; | |
241 | break; | |
242 | ||
e5b23740 KX |
243 | /* rtblk reservation */ |
244 | case XFS_TRANS_DQ_RES_RTBLKS: | |
903b1fc2 | 245 | qtrx->qt_rtblk_res += delta; |
1da177e4 LT |
246 | break; |
247 | ||
e5b23740 KX |
248 | /* rtblk count */ |
249 | case XFS_TRANS_DQ_RTBCOUNT: | |
1da177e4 | 250 | if (qtrx->qt_rtblk_res && delta > 0) { |
903b1fc2 | 251 | qtrx->qt_rtblk_res_used += delta; |
1da177e4 LT |
252 | ASSERT(qtrx->qt_rtblk_res >= qtrx->qt_rtblk_res_used); |
253 | } | |
254 | qtrx->qt_rtbcount_delta += delta; | |
255 | break; | |
256 | ||
e5b23740 | 257 | case XFS_TRANS_DQ_DELRTBCOUNT: |
1da177e4 LT |
258 | qtrx->qt_delrtb_delta += delta; |
259 | break; | |
260 | ||
e5b23740 | 261 | default: |
1da177e4 LT |
262 | ASSERT(0); |
263 | } | |
2cb91bab | 264 | |
b3b29cd1 | 265 | trace_xfs_trans_mod_dquot_after(qtrx); |
1da177e4 LT |
266 | } |
267 | ||
268 | ||
269 | /* | |
b0a9dab7 DC |
270 | * Given an array of dqtrx structures, lock all the dquots associated and join |
271 | * them to the transaction, provided they have been modified. We know that the | |
10f73d27 CH |
272 | * highest number of dquots of one type - usr, grp and prj - involved in a |
273 | * transaction is 3 so we don't need to make this very generic. | |
1da177e4 LT |
274 | */ |
275 | STATIC void | |
276 | xfs_trans_dqlockedjoin( | |
078f4a7d DW |
277 | struct xfs_trans *tp, |
278 | struct xfs_dqtrx *q) | |
1da177e4 LT |
279 | { |
280 | ASSERT(q[0].qt_dquot != NULL); | |
281 | if (q[1].qt_dquot == NULL) { | |
282 | xfs_dqlock(q[0].qt_dquot); | |
283 | xfs_trans_dqjoin(tp, q[0].qt_dquot); | |
284 | } else { | |
285 | ASSERT(XFS_QM_TRANS_MAXDQS == 2); | |
286 | xfs_dqlock2(q[0].qt_dquot, q[1].qt_dquot); | |
287 | xfs_trans_dqjoin(tp, q[0].qt_dquot); | |
288 | xfs_trans_dqjoin(tp, q[1].qt_dquot); | |
289 | } | |
290 | } | |
291 | ||
d92c8815 DW |
292 | /* Apply dqtrx changes to the quota reservation counters. */ |
293 | static inline void | |
294 | xfs_apply_quota_reservation_deltas( | |
295 | struct xfs_dquot_res *res, | |
296 | uint64_t reserved, | |
297 | int64_t res_used, | |
298 | int64_t count_delta) | |
299 | { | |
300 | if (reserved != 0) { | |
301 | /* | |
302 | * Subtle math here: If reserved > res_used (the normal case), | |
303 | * we're simply subtracting the unused transaction quota | |
304 | * reservation from the dquot reservation. | |
305 | * | |
306 | * If, however, res_used > reserved, then we have allocated | |
307 | * more quota blocks than were reserved for the transaction. | |
308 | * We must add that excess to the dquot reservation since it | |
309 | * tracks (usage + resv) and by definition we didn't reserve | |
310 | * that excess. | |
311 | */ | |
312 | res->reserved -= abs(reserved - res_used); | |
313 | } else if (count_delta != 0) { | |
314 | /* | |
315 | * These blks were never reserved, either inside a transaction | |
316 | * or outside one (in a delayed allocation). Also, this isn't | |
317 | * always a negative number since we sometimes deliberately | |
318 | * skip quota reservations. | |
319 | */ | |
320 | res->reserved += count_delta; | |
321 | } | |
322 | } | |
1da177e4 LT |
323 | |
324 | /* | |
325 | * Called by xfs_trans_commit() and similar in spirit to | |
326 | * xfs_trans_apply_sb_deltas(). | |
327 | * Go thru all the dquots belonging to this transaction and modify the | |
328 | * INCORE dquot to reflect the actual usages. | |
329 | * Unreserve just the reservations done by this transaction. | |
330 | * dquot is still left locked at exit. | |
331 | */ | |
7d095257 | 332 | void |
1da177e4 | 333 | xfs_trans_apply_dquot_deltas( |
4b6eae2e | 334 | struct xfs_trans *tp) |
1da177e4 LT |
335 | { |
336 | int i, j; | |
4b6eae2e BF |
337 | struct xfs_dquot *dqp; |
338 | struct xfs_dqtrx *qtrx, *qa; | |
903b1fc2 DW |
339 | int64_t totalbdelta; |
340 | int64_t totalrtbdelta; | |
1da177e4 | 341 | |
04a58620 | 342 | if (!tp->t_dqinfo) |
1da177e4 LT |
343 | return; |
344 | ||
345 | ASSERT(tp->t_dqinfo); | |
0e6436d9 CS |
346 | for (j = 0; j < XFS_QM_TRANS_DQTYPES; j++) { |
347 | qa = tp->t_dqinfo->dqs[j]; | |
348 | if (qa[0].qt_dquot == NULL) | |
1da177e4 | 349 | continue; |
1da177e4 LT |
350 | |
351 | /* | |
352 | * Lock all of the dquots and join them to the transaction. | |
353 | */ | |
354 | xfs_trans_dqlockedjoin(tp, qa); | |
355 | ||
356 | for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { | |
d92c8815 DW |
357 | uint64_t blk_res_used; |
358 | ||
1da177e4 LT |
359 | qtrx = &qa[i]; |
360 | /* | |
361 | * The array of dquots is filled | |
362 | * sequentially, not sparsely. | |
363 | */ | |
364 | if ((dqp = qtrx->qt_dquot) == NULL) | |
365 | break; | |
366 | ||
367 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); | |
1da177e4 LT |
368 | |
369 | /* | |
370 | * adjust the actual number of blocks used | |
371 | */ | |
1da177e4 LT |
372 | |
373 | /* | |
374 | * The issue here is - sometimes we don't make a blkquota | |
375 | * reservation intentionally to be fair to users | |
376 | * (when the amount is small). On the other hand, | |
377 | * delayed allocs do make reservations, but that's | |
378 | * outside of a transaction, so we have no | |
379 | * idea how much was really reserved. | |
380 | * So, here we've accumulated delayed allocation blks and | |
381 | * non-delay blks. The assumption is that the | |
382 | * delayed ones are always reserved (outside of a | |
383 | * transaction), and the others may or may not have | |
384 | * quota reservations. | |
385 | */ | |
386 | totalbdelta = qtrx->qt_bcount_delta + | |
387 | qtrx->qt_delbcnt_delta; | |
388 | totalrtbdelta = qtrx->qt_rtbcount_delta + | |
389 | qtrx->qt_delrtb_delta; | |
2cb91bab DW |
390 | |
391 | if (totalbdelta != 0 || totalrtbdelta != 0 || | |
392 | qtrx->qt_icount_delta != 0) { | |
393 | trace_xfs_trans_apply_dquot_deltas_before(dqp); | |
394 | trace_xfs_trans_apply_dquot_deltas(qtrx); | |
395 | } | |
396 | ||
ea15ab3c | 397 | #ifdef DEBUG |
1da177e4 | 398 | if (totalbdelta < 0) |
be37d40c | 399 | ASSERT(dqp->q_blk.count >= -totalbdelta); |
1da177e4 LT |
400 | |
401 | if (totalrtbdelta < 0) | |
be37d40c | 402 | ASSERT(dqp->q_rtb.count >= -totalrtbdelta); |
1da177e4 LT |
403 | |
404 | if (qtrx->qt_icount_delta < 0) | |
be37d40c | 405 | ASSERT(dqp->q_ino.count >= -qtrx->qt_icount_delta); |
1da177e4 LT |
406 | #endif |
407 | if (totalbdelta) | |
be37d40c | 408 | dqp->q_blk.count += totalbdelta; |
1da177e4 LT |
409 | |
410 | if (qtrx->qt_icount_delta) | |
be37d40c | 411 | dqp->q_ino.count += qtrx->qt_icount_delta; |
1da177e4 LT |
412 | |
413 | if (totalrtbdelta) | |
be37d40c | 414 | dqp->q_rtb.count += totalrtbdelta; |
1da177e4 | 415 | |
2cb91bab DW |
416 | if (totalbdelta != 0 || totalrtbdelta != 0 || |
417 | qtrx->qt_icount_delta != 0) | |
418 | trace_xfs_trans_apply_dquot_deltas_after(dqp); | |
419 | ||
1da177e4 LT |
420 | /* |
421 | * Get any default limits in use. | |
422 | * Start/reset the timer(s) if needed. | |
423 | */ | |
c51df733 | 424 | if (dqp->q_id) { |
c8c753e1 DW |
425 | xfs_qm_adjust_dqlimits(dqp); |
426 | xfs_qm_adjust_dqtimers(dqp); | |
1da177e4 LT |
427 | } |
428 | ||
985a78fd | 429 | dqp->q_flags |= XFS_DQFLAG_DIRTY; |
1da177e4 LT |
430 | /* |
431 | * add this to the list of items to get logged | |
432 | */ | |
433 | xfs_trans_log_dquot(tp, dqp); | |
434 | /* | |
435 | * Take off what's left of the original reservation. | |
436 | * In case of delayed allocations, there's no | |
437 | * reservation that a transaction structure knows of. | |
438 | */ | |
d92c8815 DW |
439 | blk_res_used = max_t(int64_t, 0, qtrx->qt_bcount_delta); |
440 | xfs_apply_quota_reservation_deltas(&dqp->q_blk, | |
441 | qtrx->qt_blk_res, blk_res_used, | |
442 | qtrx->qt_bcount_delta); | |
443 | ||
1da177e4 LT |
444 | /* |
445 | * Adjust the RT reservation. | |
446 | */ | |
d92c8815 DW |
447 | xfs_apply_quota_reservation_deltas(&dqp->q_rtb, |
448 | qtrx->qt_rtblk_res, | |
449 | qtrx->qt_rtblk_res_used, | |
450 | qtrx->qt_rtbcount_delta); | |
1da177e4 LT |
451 | |
452 | /* | |
453 | * Adjust the inode reservation. | |
454 | */ | |
d92c8815 DW |
455 | ASSERT(qtrx->qt_ino_res >= qtrx->qt_ino_res_used); |
456 | xfs_apply_quota_reservation_deltas(&dqp->q_ino, | |
457 | qtrx->qt_ino_res, | |
458 | qtrx->qt_ino_res_used, | |
459 | qtrx->qt_icount_delta); | |
1da177e4 | 460 | |
be37d40c DW |
461 | ASSERT(dqp->q_blk.reserved >= dqp->q_blk.count); |
462 | ASSERT(dqp->q_ino.reserved >= dqp->q_ino.count); | |
463 | ASSERT(dqp->q_rtb.reserved >= dqp->q_rtb.count); | |
1da177e4 | 464 | } |
1da177e4 LT |
465 | } |
466 | } | |
467 | ||
468 | /* | |
469 | * Release the reservations, and adjust the dquots accordingly. | |
470 | * This is called only when the transaction is being aborted. If by | |
471 | * any chance we have done dquot modifications incore (ie. deltas) already, | |
472 | * we simply throw those away, since that's the expected behavior | |
473 | * when a transaction is curtailed without a commit. | |
474 | */ | |
7d095257 | 475 | void |
1da177e4 | 476 | xfs_trans_unreserve_and_mod_dquots( |
aefe69a4 | 477 | struct xfs_trans *tp) |
1da177e4 LT |
478 | { |
479 | int i, j; | |
aefe69a4 | 480 | struct xfs_dquot *dqp; |
078f4a7d | 481 | struct xfs_dqtrx *qtrx, *qa; |
aefe69a4 | 482 | bool locked; |
1da177e4 | 483 | |
04a58620 | 484 | if (!tp->t_dqinfo) |
1da177e4 LT |
485 | return; |
486 | ||
0e6436d9 CS |
487 | for (j = 0; j < XFS_QM_TRANS_DQTYPES; j++) { |
488 | qa = tp->t_dqinfo->dqs[j]; | |
1da177e4 | 489 | |
1da177e4 LT |
490 | for (i = 0; i < XFS_QM_TRANS_MAXDQS; i++) { |
491 | qtrx = &qa[i]; | |
492 | /* | |
493 | * We assume that the array of dquots is filled | |
494 | * sequentially, not sparsely. | |
495 | */ | |
496 | if ((dqp = qtrx->qt_dquot) == NULL) | |
497 | break; | |
498 | /* | |
499 | * Unreserve the original reservation. We don't care | |
500 | * about the number of blocks used field, or deltas. | |
501 | * Also we don't bother to zero the fields. | |
502 | */ | |
667a9291 | 503 | locked = false; |
1da177e4 LT |
504 | if (qtrx->qt_blk_res) { |
505 | xfs_dqlock(dqp); | |
667a9291 | 506 | locked = true; |
784e80f5 | 507 | dqp->q_blk.reserved -= |
1da177e4 LT |
508 | (xfs_qcnt_t)qtrx->qt_blk_res; |
509 | } | |
510 | if (qtrx->qt_ino_res) { | |
511 | if (!locked) { | |
512 | xfs_dqlock(dqp); | |
667a9291 | 513 | locked = true; |
1da177e4 | 514 | } |
784e80f5 | 515 | dqp->q_ino.reserved -= |
1da177e4 LT |
516 | (xfs_qcnt_t)qtrx->qt_ino_res; |
517 | } | |
518 | ||
519 | if (qtrx->qt_rtblk_res) { | |
520 | if (!locked) { | |
521 | xfs_dqlock(dqp); | |
667a9291 | 522 | locked = true; |
1da177e4 | 523 | } |
784e80f5 | 524 | dqp->q_rtb.reserved -= |
1da177e4 LT |
525 | (xfs_qcnt_t)qtrx->qt_rtblk_res; |
526 | } | |
527 | if (locked) | |
528 | xfs_dqunlock(dqp); | |
529 | ||
530 | } | |
1da177e4 LT |
531 | } |
532 | } | |
533 | ||
a210c1aa CH |
534 | STATIC void |
535 | xfs_quota_warn( | |
536 | struct xfs_mount *mp, | |
537 | struct xfs_dquot *dqp, | |
538 | int type) | |
539 | { | |
e6eb603c | 540 | enum quota_type qtype; |
ffc671f1 | 541 | |
e6eb603c DW |
542 | switch (xfs_dquot_type(dqp)) { |
543 | case XFS_DQTYPE_PROJ: | |
ffc671f1 | 544 | qtype = PRJQUOTA; |
e6eb603c DW |
545 | break; |
546 | case XFS_DQTYPE_USER: | |
ffc671f1 | 547 | qtype = USRQUOTA; |
e6eb603c DW |
548 | break; |
549 | case XFS_DQTYPE_GROUP: | |
ffc671f1 | 550 | qtype = GRPQUOTA; |
e6eb603c DW |
551 | break; |
552 | default: | |
553 | return; | |
554 | } | |
ffc671f1 | 555 | |
c51df733 | 556 | quota_send_warning(make_kqid(&init_user_ns, qtype, dqp->q_id), |
431f1974 | 557 | mp->m_super->s_dev, type); |
a210c1aa CH |
558 | } |
559 | ||
292b47b4 DW |
560 | /* |
561 | * Decide if we can make an additional reservation against a quota resource. | |
562 | * Returns an inode QUOTA_NL_ warning code and whether or not it's fatal. | |
563 | * | |
564 | * Note that we assume that the numeric difference between the inode and block | |
565 | * warning codes will always be 3 since it's userspace ABI now, and will never | |
566 | * decrease the quota reservation, so the *BELOW messages are irrelevant. | |
567 | */ | |
568 | static inline int | |
569 | xfs_dqresv_check( | |
570 | struct xfs_dquot_res *res, | |
571 | struct xfs_quota_limits *qlim, | |
572 | int64_t delta, | |
573 | bool *fatal) | |
574 | { | |
575 | xfs_qcnt_t hardlimit = res->hardlimit; | |
576 | xfs_qcnt_t softlimit = res->softlimit; | |
577 | xfs_qcnt_t total_count = res->reserved + delta; | |
578 | ||
579 | BUILD_BUG_ON(QUOTA_NL_BHARDWARN != QUOTA_NL_IHARDWARN + 3); | |
580 | BUILD_BUG_ON(QUOTA_NL_BSOFTLONGWARN != QUOTA_NL_ISOFTLONGWARN + 3); | |
581 | BUILD_BUG_ON(QUOTA_NL_BSOFTWARN != QUOTA_NL_ISOFTWARN + 3); | |
582 | ||
583 | *fatal = false; | |
584 | if (delta <= 0) | |
585 | return QUOTA_NL_NOWARN; | |
586 | ||
587 | if (!hardlimit) | |
588 | hardlimit = qlim->hard; | |
589 | if (!softlimit) | |
590 | softlimit = qlim->soft; | |
591 | ||
592 | if (hardlimit && total_count > hardlimit) { | |
593 | *fatal = true; | |
594 | return QUOTA_NL_IHARDWARN; | |
595 | } | |
596 | ||
597 | if (softlimit && total_count > softlimit) { | |
598 | time64_t now = ktime_get_real_seconds(); | |
599 | ||
600 | if ((res->timer != 0 && now > res->timer) || | |
601 | (res->warnings != 0 && res->warnings >= qlim->warn)) { | |
602 | *fatal = true; | |
603 | return QUOTA_NL_ISOFTLONGWARN; | |
604 | } | |
605 | ||
4b8628d5 | 606 | res->warnings++; |
292b47b4 DW |
607 | return QUOTA_NL_ISOFTWARN; |
608 | } | |
609 | ||
610 | return QUOTA_NL_NOWARN; | |
611 | } | |
612 | ||
1da177e4 LT |
613 | /* |
614 | * This reserves disk blocks and inodes against a dquot. | |
615 | * Flags indicate if the dquot is to be locked here and also | |
616 | * if the blk reservation is for RT or regular blocks. | |
617 | * Sending in XFS_QMOPT_FORCE_RES flag skips the quota check. | |
1da177e4 LT |
618 | */ |
619 | STATIC int | |
620 | xfs_trans_dqresv( | |
aefe69a4 PR |
621 | struct xfs_trans *tp, |
622 | struct xfs_mount *mp, | |
623 | struct xfs_dquot *dqp, | |
624 | int64_t nblks, | |
625 | long ninos, | |
626 | uint flags) | |
1da177e4 | 627 | { |
c072fbef | 628 | struct xfs_quotainfo *q = mp->m_quotainfo; |
be607946 | 629 | struct xfs_def_quota *defq; |
292b47b4 DW |
630 | struct xfs_dquot_res *blkres; |
631 | struct xfs_quota_limits *qlim; | |
8e9b6e7f CH |
632 | |
633 | xfs_dqlock(dqp); | |
634 | ||
ce6e7e79 | 635 | defq = xfs_get_defquota(q, xfs_dquot_type(dqp)); |
be607946 | 636 | |
1da177e4 | 637 | if (flags & XFS_TRANS_DQ_RES_BLKS) { |
292b47b4 DW |
638 | blkres = &dqp->q_blk; |
639 | qlim = &defq->blk; | |
1da177e4 | 640 | } else { |
292b47b4 DW |
641 | blkres = &dqp->q_rtb; |
642 | qlim = &defq->rtb; | |
1da177e4 | 643 | } |
1da177e4 | 644 | |
c51df733 | 645 | if ((flags & XFS_QMOPT_FORCE_RES) == 0 && dqp->q_id && |
dbcbc7b9 | 646 | xfs_dquot_is_enforced(dqp)) { |
292b47b4 DW |
647 | int quota_nl; |
648 | bool fatal; | |
649 | ||
650 | /* | |
651 | * dquot is locked already. See if we'd go over the hardlimit | |
652 | * or exceed the timelimit if we'd reserve resources. | |
653 | */ | |
654 | quota_nl = xfs_dqresv_check(blkres, qlim, nblks, &fatal); | |
655 | if (quota_nl != QUOTA_NL_NOWARN) { | |
1da177e4 | 656 | /* |
292b47b4 DW |
657 | * Quota block warning codes are 3 more than the inode |
658 | * codes, which we check above. | |
1da177e4 | 659 | */ |
292b47b4 DW |
660 | xfs_quota_warn(mp, dqp, quota_nl + 3); |
661 | if (fatal) | |
1da177e4 | 662 | goto error_return; |
1da177e4 | 663 | } |
292b47b4 DW |
664 | |
665 | quota_nl = xfs_dqresv_check(&dqp->q_ino, &defq->ino, ninos, | |
666 | &fatal); | |
667 | if (quota_nl != QUOTA_NL_NOWARN) { | |
668 | xfs_quota_warn(mp, dqp, quota_nl); | |
669 | if (fatal) | |
1da177e4 | 670 | goto error_return; |
1da177e4 LT |
671 | } |
672 | } | |
673 | ||
674 | /* | |
675 | * Change the reservation, but not the actual usage. | |
be37d40c | 676 | * Note that q_blk.reserved = q_blk.count + resv |
1da177e4 | 677 | */ |
292b47b4 DW |
678 | blkres->reserved += (xfs_qcnt_t)nblks; |
679 | dqp->q_ino.reserved += (xfs_qcnt_t)ninos; | |
1da177e4 LT |
680 | |
681 | /* | |
682 | * note the reservation amt in the trans struct too, | |
683 | * so that the transaction knows how much was reserved by | |
684 | * it against this particular dquot. | |
685 | * We don't do this when we are reserving for a delayed allocation, | |
686 | * because we don't have the luxury of a transaction envelope then. | |
687 | */ | |
688 | if (tp) { | |
1da177e4 | 689 | ASSERT(flags & XFS_QMOPT_RESBLK_MASK); |
b3b29cd1 KX |
690 | xfs_trans_mod_dquot(tp, dqp, flags & XFS_QMOPT_RESBLK_MASK, |
691 | nblks); | |
692 | xfs_trans_mod_dquot(tp, dqp, XFS_TRANS_DQ_RES_INOS, ninos); | |
1da177e4 | 693 | } |
2a4bdfa8 DW |
694 | |
695 | if (XFS_IS_CORRUPT(mp, dqp->q_blk.reserved < dqp->q_blk.count) || | |
696 | XFS_IS_CORRUPT(mp, dqp->q_rtb.reserved < dqp->q_rtb.count) || | |
697 | XFS_IS_CORRUPT(mp, dqp->q_ino.reserved < dqp->q_ino.count)) | |
698 | goto error_corrupt; | |
1da177e4 | 699 | |
4d1f88d7 CH |
700 | xfs_dqunlock(dqp); |
701 | return 0; | |
702 | ||
1da177e4 | 703 | error_return: |
8e9b6e7f | 704 | xfs_dqunlock(dqp); |
00a342e4 | 705 | if (xfs_dquot_type(dqp) == XFS_DQTYPE_PROJ) |
2451337d DC |
706 | return -ENOSPC; |
707 | return -EDQUOT; | |
2a4bdfa8 DW |
708 | error_corrupt: |
709 | xfs_dqunlock(dqp); | |
710 | xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); | |
711 | return -EFSCORRUPTED; | |
1da177e4 LT |
712 | } |
713 | ||
714 | ||
715 | /* | |
9a2a7de2 | 716 | * Given dquot(s), make disk block and/or inode reservations against them. |
92f8ff73 CS |
717 | * The fact that this does the reservation against user, group and |
718 | * project quotas is important, because this follows a all-or-nothing | |
1da177e4 LT |
719 | * approach. |
720 | * | |
8e9b6e7f | 721 | * flags = XFS_QMOPT_FORCE_RES evades limit enforcement. Used by chown. |
9a2a7de2 | 722 | * XFS_QMOPT_ENOSPC returns ENOSPC not EDQUOT. Used by pquota. |
1da177e4 LT |
723 | * XFS_TRANS_DQ_RES_BLKS reserves regular disk blocks |
724 | * XFS_TRANS_DQ_RES_RTBLKS reserves realtime disk blocks | |
725 | * dquots are unlocked on return, if they were not locked by caller. | |
726 | */ | |
727 | int | |
728 | xfs_trans_reserve_quota_bydquots( | |
113a5683 CS |
729 | struct xfs_trans *tp, |
730 | struct xfs_mount *mp, | |
731 | struct xfs_dquot *udqp, | |
732 | struct xfs_dquot *gdqp, | |
92f8ff73 | 733 | struct xfs_dquot *pdqp, |
903b1fc2 | 734 | int64_t nblks, |
113a5683 CS |
735 | long ninos, |
736 | uint flags) | |
1da177e4 | 737 | { |
113a5683 | 738 | int error; |
1da177e4 | 739 | |
149e53af | 740 | if (!XFS_IS_QUOTA_ON(mp)) |
9a2a7de2 | 741 | return 0; |
1da177e4 | 742 | |
1da177e4 | 743 | ASSERT(flags & XFS_QMOPT_RESBLK_MASK); |
1da177e4 LT |
744 | |
745 | if (udqp) { | |
dcf1ccc9 | 746 | error = xfs_trans_dqresv(tp, mp, udqp, nblks, ninos, flags); |
9a2a7de2 NS |
747 | if (error) |
748 | return error; | |
1da177e4 LT |
749 | } |
750 | ||
751 | if (gdqp) { | |
dcf1ccc9 | 752 | error = xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos, flags); |
113a5683 CS |
753 | if (error) |
754 | goto unwind_usr; | |
1da177e4 LT |
755 | } |
756 | ||
92f8ff73 CS |
757 | if (pdqp) { |
758 | error = xfs_trans_dqresv(tp, mp, pdqp, nblks, ninos, flags); | |
759 | if (error) | |
760 | goto unwind_grp; | |
761 | } | |
762 | ||
1da177e4 | 763 | /* |
c41564b5 | 764 | * Didn't change anything critical, so, no need to log |
1da177e4 | 765 | */ |
9a2a7de2 | 766 | return 0; |
113a5683 | 767 | |
92f8ff73 CS |
768 | unwind_grp: |
769 | flags |= XFS_QMOPT_FORCE_RES; | |
770 | if (gdqp) | |
771 | xfs_trans_dqresv(tp, mp, gdqp, -nblks, -ninos, flags); | |
113a5683 CS |
772 | unwind_usr: |
773 | flags |= XFS_QMOPT_FORCE_RES; | |
774 | if (udqp) | |
775 | xfs_trans_dqresv(tp, mp, udqp, -nblks, -ninos, flags); | |
776 | return error; | |
1da177e4 LT |
777 | } |
778 | ||
779 | ||
780 | /* | |
781 | * Lock the dquot and change the reservation if we can. | |
782 | * This doesn't change the actual usage, just the reservation. | |
783 | * The inode sent in is locked. | |
1da177e4 | 784 | */ |
7d095257 | 785 | int |
1da177e4 | 786 | xfs_trans_reserve_quota_nblks( |
7d095257 CH |
787 | struct xfs_trans *tp, |
788 | struct xfs_inode *ip, | |
02b7ee4e DW |
789 | int64_t dblocks, |
790 | int64_t rblocks, | |
791 | bool force) | |
1da177e4 | 792 | { |
7d095257 | 793 | struct xfs_mount *mp = ip->i_mount; |
02b7ee4e DW |
794 | unsigned int qflags = 0; |
795 | int error; | |
1da177e4 | 796 | |
149e53af | 797 | if (!XFS_IS_QUOTA_ON(mp)) |
9a2a7de2 | 798 | return 0; |
1da177e4 | 799 | |
9cad19d2 | 800 | ASSERT(!xfs_is_quota_inode(&mp->m_sb, ip->i_ino)); |
579aa9ca | 801 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
1da177e4 | 802 | |
02b7ee4e DW |
803 | if (force) |
804 | qflags |= XFS_QMOPT_FORCE_RES; | |
805 | ||
806 | /* Reserve data device quota against the inode's dquots. */ | |
807 | error = xfs_trans_reserve_quota_bydquots(tp, mp, ip->i_udquot, | |
808 | ip->i_gdquot, ip->i_pdquot, dblocks, 0, | |
809 | XFS_QMOPT_RES_REGBLKS | qflags); | |
810 | if (error) | |
811 | return error; | |
812 | ||
813 | /* Do the same but for realtime blocks. */ | |
814 | error = xfs_trans_reserve_quota_bydquots(tp, mp, ip->i_udquot, | |
815 | ip->i_gdquot, ip->i_pdquot, rblocks, 0, | |
816 | XFS_QMOPT_RES_RTBLKS | qflags); | |
817 | if (error) { | |
818 | xfs_trans_reserve_quota_bydquots(tp, mp, ip->i_udquot, | |
819 | ip->i_gdquot, ip->i_pdquot, -dblocks, 0, | |
820 | XFS_QMOPT_RES_REGBLKS); | |
821 | return error; | |
822 | } | |
823 | ||
824 | return 0; | |
1da177e4 LT |
825 | } |
826 | ||
ad4a7473 DW |
827 | /* Change the quota reservations for an inode creation activity. */ |
828 | int | |
829 | xfs_trans_reserve_quota_icreate( | |
830 | struct xfs_trans *tp, | |
831 | struct xfs_dquot *udqp, | |
832 | struct xfs_dquot *gdqp, | |
833 | struct xfs_dquot *pdqp, | |
834 | int64_t dblocks) | |
835 | { | |
836 | struct xfs_mount *mp = tp->t_mountp; | |
837 | ||
149e53af | 838 | if (!XFS_IS_QUOTA_ON(mp)) |
ad4a7473 DW |
839 | return 0; |
840 | ||
841 | return xfs_trans_reserve_quota_bydquots(tp, mp, udqp, gdqp, pdqp, | |
842 | dblocks, 1, XFS_QMOPT_RES_REGBLKS); | |
843 | } | |
844 | ||
1da177e4 LT |
845 | STATIC void |
846 | xfs_trans_alloc_dqinfo( | |
847 | xfs_trans_t *tp) | |
848 | { | |
32a2b11f CM |
849 | tp->t_dqinfo = kmem_cache_zalloc(xfs_qm_dqtrxzone, |
850 | GFP_KERNEL | __GFP_NOFAIL); | |
1da177e4 LT |
851 | } |
852 | ||
7d095257 | 853 | void |
1da177e4 LT |
854 | xfs_trans_free_dqinfo( |
855 | xfs_trans_t *tp) | |
856 | { | |
857 | if (!tp->t_dqinfo) | |
858 | return; | |
377bcd5f | 859 | kmem_cache_free(xfs_qm_dqtrxzone, tp->t_dqinfo); |
7d095257 | 860 | tp->t_dqinfo = NULL; |
1da177e4 | 861 | } |