Commit | Line | Data |
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1da177e4 | 1 | /* |
7b718769 | 2 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. |
e98c414f | 3 | * Copyright (C) 2010 Red Hat, Inc. |
7b718769 | 4 | * All Rights Reserved. |
1da177e4 | 5 | * |
7b718769 NS |
6 | * This program is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
8 | * published by the Free Software Foundation. |
9 | * | |
7b718769 NS |
10 | * This program is distributed in the hope that it would be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
1da177e4 | 14 | * |
7b718769 NS |
15 | * You should have received a copy of the GNU General Public License |
16 | * along with this program; if not, write the Free Software Foundation, | |
17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 18 | */ |
1da177e4 | 19 | #include "xfs.h" |
a844f451 | 20 | #include "xfs_fs.h" |
70a9883c | 21 | #include "xfs_shared.h" |
239880ef DC |
22 | #include "xfs_format.h" |
23 | #include "xfs_log_format.h" | |
24 | #include "xfs_trans_resv.h" | |
1da177e4 | 25 | #include "xfs_mount.h" |
1da177e4 | 26 | #include "xfs_inode.h" |
efc27b52 | 27 | #include "xfs_extent_busy.h" |
1da177e4 | 28 | #include "xfs_quota.h" |
239880ef | 29 | #include "xfs_trans.h" |
a844f451 | 30 | #include "xfs_trans_priv.h" |
239880ef | 31 | #include "xfs_log.h" |
ed3b4d6c | 32 | #include "xfs_trace.h" |
a4fbe6ab | 33 | #include "xfs_error.h" |
1da177e4 | 34 | |
8f794055 | 35 | kmem_zone_t *xfs_trans_zone; |
e98c414f | 36 | kmem_zone_t *xfs_log_item_desc_zone; |
1da177e4 | 37 | |
1da177e4 LT |
38 | /* |
39 | * Initialize the precomputed transaction reservation values | |
40 | * in the mount structure. | |
41 | */ | |
42 | void | |
43 | xfs_trans_init( | |
025101dc | 44 | struct xfs_mount *mp) |
1da177e4 | 45 | { |
3d3c8b52 | 46 | xfs_trans_resv_calc(mp, M_RES(mp)); |
1da177e4 LT |
47 | } |
48 | ||
49 | /* | |
50 | * This routine is called to allocate a transaction structure. | |
51 | * The type parameter indicates the type of the transaction. These | |
52 | * are enumerated in xfs_trans.h. | |
b2ce3974 AE |
53 | * |
54 | * Dynamically allocate the transaction structure from the transaction | |
55 | * zone, initialize it, and return it to the caller. | |
1da177e4 | 56 | */ |
b2ce3974 AE |
57 | xfs_trans_t * |
58 | xfs_trans_alloc( | |
59 | xfs_mount_t *mp, | |
60 | uint type) | |
61 | { | |
d9457dc0 JK |
62 | xfs_trans_t *tp; |
63 | ||
64 | sb_start_intwrite(mp->m_super); | |
65 | tp = _xfs_trans_alloc(mp, type, KM_SLEEP); | |
66 | tp->t_flags |= XFS_TRANS_FREEZE_PROT; | |
67 | return tp; | |
b2ce3974 AE |
68 | } |
69 | ||
70 | xfs_trans_t * | |
1da177e4 | 71 | _xfs_trans_alloc( |
b2ce3974 AE |
72 | xfs_mount_t *mp, |
73 | uint type, | |
77ba7877 | 74 | xfs_km_flags_t memflags) |
1da177e4 | 75 | { |
b2ce3974 | 76 | xfs_trans_t *tp; |
1da177e4 | 77 | |
d9457dc0 | 78 | WARN_ON(mp->m_super->s_writers.frozen == SB_FREEZE_COMPLETE); |
34327e13 | 79 | atomic_inc(&mp->m_active_trans); |
1da177e4 | 80 | |
80641dc6 | 81 | tp = kmem_zone_zalloc(xfs_trans_zone, memflags); |
2a3c0acc | 82 | tp->t_magic = XFS_TRANS_HEADER_MAGIC; |
1da177e4 LT |
83 | tp->t_type = type; |
84 | tp->t_mountp = mp; | |
e98c414f | 85 | INIT_LIST_HEAD(&tp->t_items); |
ed3b4d6c | 86 | INIT_LIST_HEAD(&tp->t_busy); |
34327e13 | 87 | return tp; |
1da177e4 LT |
88 | } |
89 | ||
b1c1b5b6 DC |
90 | /* |
91 | * Free the transaction structure. If there is more clean up | |
92 | * to do when the structure is freed, add it here. | |
93 | */ | |
94 | STATIC void | |
95 | xfs_trans_free( | |
ed3b4d6c | 96 | struct xfs_trans *tp) |
b1c1b5b6 | 97 | { |
4ecbfe63 DC |
98 | xfs_extent_busy_sort(&tp->t_busy); |
99 | xfs_extent_busy_clear(tp->t_mountp, &tp->t_busy, false); | |
ed3b4d6c | 100 | |
b1c1b5b6 | 101 | atomic_dec(&tp->t_mountp->m_active_trans); |
d9457dc0 JK |
102 | if (tp->t_flags & XFS_TRANS_FREEZE_PROT) |
103 | sb_end_intwrite(tp->t_mountp->m_super); | |
b1c1b5b6 DC |
104 | xfs_trans_free_dqinfo(tp); |
105 | kmem_zone_free(xfs_trans_zone, tp); | |
106 | } | |
107 | ||
1da177e4 LT |
108 | /* |
109 | * This is called to create a new transaction which will share the | |
110 | * permanent log reservation of the given transaction. The remaining | |
111 | * unused block and rt extent reservations are also inherited. This | |
112 | * implies that the original transaction is no longer allowed to allocate | |
113 | * blocks. Locks and log items, however, are no inherited. They must | |
114 | * be added to the new transaction explicitly. | |
115 | */ | |
116 | xfs_trans_t * | |
117 | xfs_trans_dup( | |
118 | xfs_trans_t *tp) | |
119 | { | |
120 | xfs_trans_t *ntp; | |
121 | ||
122 | ntp = kmem_zone_zalloc(xfs_trans_zone, KM_SLEEP); | |
123 | ||
124 | /* | |
125 | * Initialize the new transaction structure. | |
126 | */ | |
2a3c0acc | 127 | ntp->t_magic = XFS_TRANS_HEADER_MAGIC; |
1da177e4 LT |
128 | ntp->t_type = tp->t_type; |
129 | ntp->t_mountp = tp->t_mountp; | |
e98c414f | 130 | INIT_LIST_HEAD(&ntp->t_items); |
ed3b4d6c | 131 | INIT_LIST_HEAD(&ntp->t_busy); |
1da177e4 LT |
132 | |
133 | ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES); | |
1da177e4 | 134 | ASSERT(tp->t_ticket != NULL); |
cfcbbbd0 | 135 | |
d9457dc0 JK |
136 | ntp->t_flags = XFS_TRANS_PERM_LOG_RES | |
137 | (tp->t_flags & XFS_TRANS_RESERVE) | | |
138 | (tp->t_flags & XFS_TRANS_FREEZE_PROT); | |
139 | /* We gave our writer reference to the new transaction */ | |
140 | tp->t_flags &= ~XFS_TRANS_FREEZE_PROT; | |
cc09c0dc | 141 | ntp->t_ticket = xfs_log_ticket_get(tp->t_ticket); |
1da177e4 LT |
142 | ntp->t_blk_res = tp->t_blk_res - tp->t_blk_res_used; |
143 | tp->t_blk_res = tp->t_blk_res_used; | |
144 | ntp->t_rtx_res = tp->t_rtx_res - tp->t_rtx_res_used; | |
145 | tp->t_rtx_res = tp->t_rtx_res_used; | |
59c1b082 | 146 | ntp->t_pflags = tp->t_pflags; |
1da177e4 | 147 | |
7d095257 | 148 | xfs_trans_dup_dqinfo(tp, ntp); |
1da177e4 LT |
149 | |
150 | atomic_inc(&tp->t_mountp->m_active_trans); | |
151 | return ntp; | |
152 | } | |
153 | ||
154 | /* | |
155 | * This is called to reserve free disk blocks and log space for the | |
156 | * given transaction. This must be done before allocating any resources | |
157 | * within the transaction. | |
158 | * | |
159 | * This will return ENOSPC if there are not enough blocks available. | |
160 | * It will sleep waiting for available log space. | |
161 | * The only valid value for the flags parameter is XFS_RES_LOG_PERM, which | |
162 | * is used by long running transactions. If any one of the reservations | |
163 | * fails then they will all be backed out. | |
164 | * | |
165 | * This does not do quota reservations. That typically is done by the | |
166 | * caller afterwards. | |
167 | */ | |
168 | int | |
169 | xfs_trans_reserve( | |
3d3c8b52 JL |
170 | struct xfs_trans *tp, |
171 | struct xfs_trans_res *resp, | |
172 | uint blocks, | |
173 | uint rtextents) | |
1da177e4 | 174 | { |
59c1b082 NS |
175 | int error = 0; |
176 | int rsvd = (tp->t_flags & XFS_TRANS_RESERVE) != 0; | |
1da177e4 LT |
177 | |
178 | /* Mark this thread as being in a transaction */ | |
59c1b082 | 179 | current_set_flags_nested(&tp->t_pflags, PF_FSTRANS); |
1da177e4 LT |
180 | |
181 | /* | |
182 | * Attempt to reserve the needed disk blocks by decrementing | |
183 | * the number needed from the number available. This will | |
184 | * fail if the count would go below zero. | |
185 | */ | |
186 | if (blocks > 0) { | |
96540c78 | 187 | error = xfs_icsb_modify_counters(tp->t_mountp, XFS_SBS_FDBLOCKS, |
20f4ebf2 | 188 | -((int64_t)blocks), rsvd); |
1da177e4 | 189 | if (error != 0) { |
59c1b082 | 190 | current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); |
2451337d | 191 | return -ENOSPC; |
1da177e4 LT |
192 | } |
193 | tp->t_blk_res += blocks; | |
194 | } | |
195 | ||
196 | /* | |
197 | * Reserve the log space needed for this transaction. | |
198 | */ | |
3d3c8b52 | 199 | if (resp->tr_logres > 0) { |
9006fb91 CH |
200 | bool permanent = false; |
201 | ||
3d3c8b52 JL |
202 | ASSERT(tp->t_log_res == 0 || |
203 | tp->t_log_res == resp->tr_logres); | |
204 | ASSERT(tp->t_log_count == 0 || | |
205 | tp->t_log_count == resp->tr_logcount); | |
9006fb91 | 206 | |
3d3c8b52 | 207 | if (resp->tr_logflags & XFS_TRANS_PERM_LOG_RES) { |
1da177e4 | 208 | tp->t_flags |= XFS_TRANS_PERM_LOG_RES; |
9006fb91 | 209 | permanent = true; |
1da177e4 LT |
210 | } else { |
211 | ASSERT(tp->t_ticket == NULL); | |
212 | ASSERT(!(tp->t_flags & XFS_TRANS_PERM_LOG_RES)); | |
1da177e4 LT |
213 | } |
214 | ||
9006fb91 | 215 | if (tp->t_ticket != NULL) { |
3d3c8b52 | 216 | ASSERT(resp->tr_logflags & XFS_TRANS_PERM_LOG_RES); |
9006fb91 CH |
217 | error = xfs_log_regrant(tp->t_mountp, tp->t_ticket); |
218 | } else { | |
3d3c8b52 JL |
219 | error = xfs_log_reserve(tp->t_mountp, |
220 | resp->tr_logres, | |
221 | resp->tr_logcount, | |
222 | &tp->t_ticket, XFS_TRANSACTION, | |
223 | permanent, tp->t_type); | |
1da177e4 | 224 | } |
9006fb91 CH |
225 | |
226 | if (error) | |
227 | goto undo_blocks; | |
228 | ||
3d3c8b52 JL |
229 | tp->t_log_res = resp->tr_logres; |
230 | tp->t_log_count = resp->tr_logcount; | |
1da177e4 LT |
231 | } |
232 | ||
233 | /* | |
234 | * Attempt to reserve the needed realtime extents by decrementing | |
235 | * the number needed from the number available. This will | |
236 | * fail if the count would go below zero. | |
237 | */ | |
238 | if (rtextents > 0) { | |
239 | error = xfs_mod_incore_sb(tp->t_mountp, XFS_SBS_FREXTENTS, | |
20f4ebf2 | 240 | -((int64_t)rtextents), rsvd); |
1da177e4 | 241 | if (error) { |
2451337d | 242 | error = -ENOSPC; |
1da177e4 LT |
243 | goto undo_log; |
244 | } | |
245 | tp->t_rtx_res += rtextents; | |
246 | } | |
247 | ||
248 | return 0; | |
249 | ||
250 | /* | |
251 | * Error cases jump to one of these labels to undo any | |
252 | * reservations which have already been performed. | |
253 | */ | |
254 | undo_log: | |
3d3c8b52 | 255 | if (resp->tr_logres > 0) { |
9006fb91 CH |
256 | int log_flags; |
257 | ||
3d3c8b52 | 258 | if (resp->tr_logflags & XFS_TRANS_PERM_LOG_RES) { |
1da177e4 LT |
259 | log_flags = XFS_LOG_REL_PERM_RESERV; |
260 | } else { | |
261 | log_flags = 0; | |
262 | } | |
263 | xfs_log_done(tp->t_mountp, tp->t_ticket, NULL, log_flags); | |
264 | tp->t_ticket = NULL; | |
265 | tp->t_log_res = 0; | |
266 | tp->t_flags &= ~XFS_TRANS_PERM_LOG_RES; | |
267 | } | |
268 | ||
269 | undo_blocks: | |
270 | if (blocks > 0) { | |
96540c78 | 271 | xfs_icsb_modify_counters(tp->t_mountp, XFS_SBS_FDBLOCKS, |
20f4ebf2 | 272 | (int64_t)blocks, rsvd); |
1da177e4 LT |
273 | tp->t_blk_res = 0; |
274 | } | |
275 | ||
59c1b082 | 276 | current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); |
1da177e4 | 277 | |
59c1b082 | 278 | return error; |
1da177e4 LT |
279 | } |
280 | ||
1da177e4 LT |
281 | /* |
282 | * Record the indicated change to the given field for application | |
283 | * to the file system's superblock when the transaction commits. | |
284 | * For now, just store the change in the transaction structure. | |
285 | * | |
286 | * Mark the transaction structure to indicate that the superblock | |
287 | * needs to be updated before committing. | |
92821e2b DC |
288 | * |
289 | * Because we may not be keeping track of allocated/free inodes and | |
290 | * used filesystem blocks in the superblock, we do not mark the | |
291 | * superblock dirty in this transaction if we modify these fields. | |
292 | * We still need to update the transaction deltas so that they get | |
293 | * applied to the incore superblock, but we don't want them to | |
294 | * cause the superblock to get locked and logged if these are the | |
295 | * only fields in the superblock that the transaction modifies. | |
1da177e4 LT |
296 | */ |
297 | void | |
298 | xfs_trans_mod_sb( | |
299 | xfs_trans_t *tp, | |
300 | uint field, | |
20f4ebf2 | 301 | int64_t delta) |
1da177e4 | 302 | { |
92821e2b DC |
303 | uint32_t flags = (XFS_TRANS_DIRTY|XFS_TRANS_SB_DIRTY); |
304 | xfs_mount_t *mp = tp->t_mountp; | |
1da177e4 LT |
305 | |
306 | switch (field) { | |
307 | case XFS_TRANS_SB_ICOUNT: | |
308 | tp->t_icount_delta += delta; | |
92821e2b DC |
309 | if (xfs_sb_version_haslazysbcount(&mp->m_sb)) |
310 | flags &= ~XFS_TRANS_SB_DIRTY; | |
1da177e4 LT |
311 | break; |
312 | case XFS_TRANS_SB_IFREE: | |
313 | tp->t_ifree_delta += delta; | |
92821e2b DC |
314 | if (xfs_sb_version_haslazysbcount(&mp->m_sb)) |
315 | flags &= ~XFS_TRANS_SB_DIRTY; | |
1da177e4 LT |
316 | break; |
317 | case XFS_TRANS_SB_FDBLOCKS: | |
318 | /* | |
319 | * Track the number of blocks allocated in the | |
320 | * transaction. Make sure it does not exceed the | |
321 | * number reserved. | |
322 | */ | |
323 | if (delta < 0) { | |
324 | tp->t_blk_res_used += (uint)-delta; | |
325 | ASSERT(tp->t_blk_res_used <= tp->t_blk_res); | |
326 | } | |
327 | tp->t_fdblocks_delta += delta; | |
92821e2b DC |
328 | if (xfs_sb_version_haslazysbcount(&mp->m_sb)) |
329 | flags &= ~XFS_TRANS_SB_DIRTY; | |
1da177e4 LT |
330 | break; |
331 | case XFS_TRANS_SB_RES_FDBLOCKS: | |
332 | /* | |
333 | * The allocation has already been applied to the | |
334 | * in-core superblock's counter. This should only | |
335 | * be applied to the on-disk superblock. | |
336 | */ | |
337 | ASSERT(delta < 0); | |
338 | tp->t_res_fdblocks_delta += delta; | |
92821e2b DC |
339 | if (xfs_sb_version_haslazysbcount(&mp->m_sb)) |
340 | flags &= ~XFS_TRANS_SB_DIRTY; | |
1da177e4 LT |
341 | break; |
342 | case XFS_TRANS_SB_FREXTENTS: | |
343 | /* | |
344 | * Track the number of blocks allocated in the | |
345 | * transaction. Make sure it does not exceed the | |
346 | * number reserved. | |
347 | */ | |
348 | if (delta < 0) { | |
349 | tp->t_rtx_res_used += (uint)-delta; | |
350 | ASSERT(tp->t_rtx_res_used <= tp->t_rtx_res); | |
351 | } | |
352 | tp->t_frextents_delta += delta; | |
353 | break; | |
354 | case XFS_TRANS_SB_RES_FREXTENTS: | |
355 | /* | |
356 | * The allocation has already been applied to the | |
c41564b5 | 357 | * in-core superblock's counter. This should only |
1da177e4 LT |
358 | * be applied to the on-disk superblock. |
359 | */ | |
360 | ASSERT(delta < 0); | |
361 | tp->t_res_frextents_delta += delta; | |
362 | break; | |
363 | case XFS_TRANS_SB_DBLOCKS: | |
364 | ASSERT(delta > 0); | |
365 | tp->t_dblocks_delta += delta; | |
366 | break; | |
367 | case XFS_TRANS_SB_AGCOUNT: | |
368 | ASSERT(delta > 0); | |
369 | tp->t_agcount_delta += delta; | |
370 | break; | |
371 | case XFS_TRANS_SB_IMAXPCT: | |
372 | tp->t_imaxpct_delta += delta; | |
373 | break; | |
374 | case XFS_TRANS_SB_REXTSIZE: | |
375 | tp->t_rextsize_delta += delta; | |
376 | break; | |
377 | case XFS_TRANS_SB_RBMBLOCKS: | |
378 | tp->t_rbmblocks_delta += delta; | |
379 | break; | |
380 | case XFS_TRANS_SB_RBLOCKS: | |
381 | tp->t_rblocks_delta += delta; | |
382 | break; | |
383 | case XFS_TRANS_SB_REXTENTS: | |
384 | tp->t_rextents_delta += delta; | |
385 | break; | |
386 | case XFS_TRANS_SB_REXTSLOG: | |
387 | tp->t_rextslog_delta += delta; | |
388 | break; | |
389 | default: | |
390 | ASSERT(0); | |
391 | return; | |
392 | } | |
393 | ||
210c6f1c | 394 | tp->t_flags |= flags; |
1da177e4 LT |
395 | } |
396 | ||
397 | /* | |
398 | * xfs_trans_apply_sb_deltas() is called from the commit code | |
399 | * to bring the superblock buffer into the current transaction | |
400 | * and modify it as requested by earlier calls to xfs_trans_mod_sb(). | |
401 | * | |
402 | * For now we just look at each field allowed to change and change | |
403 | * it if necessary. | |
404 | */ | |
405 | STATIC void | |
406 | xfs_trans_apply_sb_deltas( | |
407 | xfs_trans_t *tp) | |
408 | { | |
2bdf7cd0 | 409 | xfs_dsb_t *sbp; |
1da177e4 LT |
410 | xfs_buf_t *bp; |
411 | int whole = 0; | |
412 | ||
413 | bp = xfs_trans_getsb(tp, tp->t_mountp, 0); | |
414 | sbp = XFS_BUF_TO_SBP(bp); | |
415 | ||
416 | /* | |
417 | * Check that superblock mods match the mods made to AGF counters. | |
418 | */ | |
419 | ASSERT((tp->t_fdblocks_delta + tp->t_res_fdblocks_delta) == | |
420 | (tp->t_ag_freeblks_delta + tp->t_ag_flist_delta + | |
421 | tp->t_ag_btree_delta)); | |
422 | ||
92821e2b DC |
423 | /* |
424 | * Only update the superblock counters if we are logging them | |
425 | */ | |
426 | if (!xfs_sb_version_haslazysbcount(&(tp->t_mountp->m_sb))) { | |
2bdf7cd0 | 427 | if (tp->t_icount_delta) |
413d57c9 | 428 | be64_add_cpu(&sbp->sb_icount, tp->t_icount_delta); |
2bdf7cd0 | 429 | if (tp->t_ifree_delta) |
413d57c9 | 430 | be64_add_cpu(&sbp->sb_ifree, tp->t_ifree_delta); |
2bdf7cd0 | 431 | if (tp->t_fdblocks_delta) |
413d57c9 | 432 | be64_add_cpu(&sbp->sb_fdblocks, tp->t_fdblocks_delta); |
2bdf7cd0 | 433 | if (tp->t_res_fdblocks_delta) |
413d57c9 | 434 | be64_add_cpu(&sbp->sb_fdblocks, tp->t_res_fdblocks_delta); |
1da177e4 LT |
435 | } |
436 | ||
2bdf7cd0 | 437 | if (tp->t_frextents_delta) |
413d57c9 | 438 | be64_add_cpu(&sbp->sb_frextents, tp->t_frextents_delta); |
2bdf7cd0 | 439 | if (tp->t_res_frextents_delta) |
413d57c9 | 440 | be64_add_cpu(&sbp->sb_frextents, tp->t_res_frextents_delta); |
2bdf7cd0 CH |
441 | |
442 | if (tp->t_dblocks_delta) { | |
413d57c9 | 443 | be64_add_cpu(&sbp->sb_dblocks, tp->t_dblocks_delta); |
1da177e4 LT |
444 | whole = 1; |
445 | } | |
2bdf7cd0 | 446 | if (tp->t_agcount_delta) { |
413d57c9 | 447 | be32_add_cpu(&sbp->sb_agcount, tp->t_agcount_delta); |
1da177e4 LT |
448 | whole = 1; |
449 | } | |
2bdf7cd0 CH |
450 | if (tp->t_imaxpct_delta) { |
451 | sbp->sb_imax_pct += tp->t_imaxpct_delta; | |
1da177e4 LT |
452 | whole = 1; |
453 | } | |
2bdf7cd0 | 454 | if (tp->t_rextsize_delta) { |
413d57c9 | 455 | be32_add_cpu(&sbp->sb_rextsize, tp->t_rextsize_delta); |
1da177e4 LT |
456 | whole = 1; |
457 | } | |
2bdf7cd0 | 458 | if (tp->t_rbmblocks_delta) { |
413d57c9 | 459 | be32_add_cpu(&sbp->sb_rbmblocks, tp->t_rbmblocks_delta); |
1da177e4 LT |
460 | whole = 1; |
461 | } | |
2bdf7cd0 | 462 | if (tp->t_rblocks_delta) { |
413d57c9 | 463 | be64_add_cpu(&sbp->sb_rblocks, tp->t_rblocks_delta); |
1da177e4 LT |
464 | whole = 1; |
465 | } | |
2bdf7cd0 | 466 | if (tp->t_rextents_delta) { |
413d57c9 | 467 | be64_add_cpu(&sbp->sb_rextents, tp->t_rextents_delta); |
1da177e4 LT |
468 | whole = 1; |
469 | } | |
2bdf7cd0 CH |
470 | if (tp->t_rextslog_delta) { |
471 | sbp->sb_rextslog += tp->t_rextslog_delta; | |
1da177e4 LT |
472 | whole = 1; |
473 | } | |
474 | ||
3443a3bc | 475 | xfs_trans_buf_set_type(tp, bp, XFS_BLFT_SB_BUF); |
1da177e4 LT |
476 | if (whole) |
477 | /* | |
c41564b5 | 478 | * Log the whole thing, the fields are noncontiguous. |
1da177e4 | 479 | */ |
2bdf7cd0 | 480 | xfs_trans_log_buf(tp, bp, 0, sizeof(xfs_dsb_t) - 1); |
1da177e4 LT |
481 | else |
482 | /* | |
483 | * Since all the modifiable fields are contiguous, we | |
484 | * can get away with this. | |
485 | */ | |
2bdf7cd0 CH |
486 | xfs_trans_log_buf(tp, bp, offsetof(xfs_dsb_t, sb_icount), |
487 | offsetof(xfs_dsb_t, sb_frextents) + | |
1da177e4 | 488 | sizeof(sbp->sb_frextents) - 1); |
1da177e4 LT |
489 | } |
490 | ||
491 | /* | |
45c34141 DC |
492 | * xfs_trans_unreserve_and_mod_sb() is called to release unused reservations |
493 | * and apply superblock counter changes to the in-core superblock. The | |
494 | * t_res_fdblocks_delta and t_res_frextents_delta fields are explicitly NOT | |
495 | * applied to the in-core superblock. The idea is that that has already been | |
496 | * done. | |
1da177e4 LT |
497 | * |
498 | * This is done efficiently with a single call to xfs_mod_incore_sb_batch(). | |
45c34141 DC |
499 | * However, we have to ensure that we only modify each superblock field only |
500 | * once because the application of the delta values may not be atomic. That can | |
501 | * lead to ENOSPC races occurring if we have two separate modifcations of the | |
502 | * free space counter to put back the entire reservation and then take away | |
503 | * what we used. | |
504 | * | |
505 | * If we are not logging superblock counters, then the inode allocated/free and | |
506 | * used block counts are not updated in the on disk superblock. In this case, | |
507 | * XFS_TRANS_SB_DIRTY will not be set when the transaction is updated but we | |
508 | * still need to update the incore superblock with the changes. | |
1da177e4 | 509 | */ |
71e330b5 | 510 | void |
1da177e4 LT |
511 | xfs_trans_unreserve_and_mod_sb( |
512 | xfs_trans_t *tp) | |
513 | { | |
1b040712 | 514 | xfs_mod_sb_t msb[9]; /* If you add cases, add entries */ |
1da177e4 | 515 | xfs_mod_sb_t *msbp; |
92821e2b | 516 | xfs_mount_t *mp = tp->t_mountp; |
1da177e4 LT |
517 | /* REFERENCED */ |
518 | int error; | |
519 | int rsvd; | |
45c34141 DC |
520 | int64_t blkdelta = 0; |
521 | int64_t rtxdelta = 0; | |
1b040712 CH |
522 | int64_t idelta = 0; |
523 | int64_t ifreedelta = 0; | |
1da177e4 LT |
524 | |
525 | msbp = msb; | |
526 | rsvd = (tp->t_flags & XFS_TRANS_RESERVE) != 0; | |
527 | ||
1b040712 | 528 | /* calculate deltas */ |
45c34141 DC |
529 | if (tp->t_blk_res > 0) |
530 | blkdelta = tp->t_blk_res; | |
45c34141 DC |
531 | if ((tp->t_fdblocks_delta != 0) && |
532 | (xfs_sb_version_haslazysbcount(&mp->m_sb) || | |
533 | (tp->t_flags & XFS_TRANS_SB_DIRTY))) | |
534 | blkdelta += tp->t_fdblocks_delta; | |
535 | ||
45c34141 DC |
536 | if (tp->t_rtx_res > 0) |
537 | rtxdelta = tp->t_rtx_res; | |
45c34141 DC |
538 | if ((tp->t_frextents_delta != 0) && |
539 | (tp->t_flags & XFS_TRANS_SB_DIRTY)) | |
540 | rtxdelta += tp->t_frextents_delta; | |
541 | ||
1b040712 CH |
542 | if (xfs_sb_version_haslazysbcount(&mp->m_sb) || |
543 | (tp->t_flags & XFS_TRANS_SB_DIRTY)) { | |
544 | idelta = tp->t_icount_delta; | |
545 | ifreedelta = tp->t_ifree_delta; | |
546 | } | |
547 | ||
548 | /* apply the per-cpu counters */ | |
549 | if (blkdelta) { | |
550 | error = xfs_icsb_modify_counters(mp, XFS_SBS_FDBLOCKS, | |
551 | blkdelta, rsvd); | |
552 | if (error) | |
553 | goto out; | |
554 | } | |
555 | ||
556 | if (idelta) { | |
557 | error = xfs_icsb_modify_counters(mp, XFS_SBS_ICOUNT, | |
558 | idelta, rsvd); | |
559 | if (error) | |
560 | goto out_undo_fdblocks; | |
561 | } | |
562 | ||
563 | if (ifreedelta) { | |
564 | error = xfs_icsb_modify_counters(mp, XFS_SBS_IFREE, | |
565 | ifreedelta, rsvd); | |
566 | if (error) | |
567 | goto out_undo_icount; | |
568 | } | |
569 | ||
570 | /* apply remaining deltas */ | |
45c34141 | 571 | if (rtxdelta != 0) { |
1da177e4 | 572 | msbp->msb_field = XFS_SBS_FREXTENTS; |
45c34141 | 573 | msbp->msb_delta = rtxdelta; |
1da177e4 LT |
574 | msbp++; |
575 | } | |
576 | ||
92821e2b | 577 | if (tp->t_flags & XFS_TRANS_SB_DIRTY) { |
1da177e4 LT |
578 | if (tp->t_dblocks_delta != 0) { |
579 | msbp->msb_field = XFS_SBS_DBLOCKS; | |
20f4ebf2 | 580 | msbp->msb_delta = tp->t_dblocks_delta; |
1da177e4 LT |
581 | msbp++; |
582 | } | |
583 | if (tp->t_agcount_delta != 0) { | |
584 | msbp->msb_field = XFS_SBS_AGCOUNT; | |
20f4ebf2 | 585 | msbp->msb_delta = tp->t_agcount_delta; |
1da177e4 LT |
586 | msbp++; |
587 | } | |
588 | if (tp->t_imaxpct_delta != 0) { | |
589 | msbp->msb_field = XFS_SBS_IMAX_PCT; | |
20f4ebf2 | 590 | msbp->msb_delta = tp->t_imaxpct_delta; |
1da177e4 LT |
591 | msbp++; |
592 | } | |
593 | if (tp->t_rextsize_delta != 0) { | |
594 | msbp->msb_field = XFS_SBS_REXTSIZE; | |
20f4ebf2 | 595 | msbp->msb_delta = tp->t_rextsize_delta; |
1da177e4 LT |
596 | msbp++; |
597 | } | |
598 | if (tp->t_rbmblocks_delta != 0) { | |
599 | msbp->msb_field = XFS_SBS_RBMBLOCKS; | |
20f4ebf2 | 600 | msbp->msb_delta = tp->t_rbmblocks_delta; |
1da177e4 LT |
601 | msbp++; |
602 | } | |
603 | if (tp->t_rblocks_delta != 0) { | |
604 | msbp->msb_field = XFS_SBS_RBLOCKS; | |
20f4ebf2 | 605 | msbp->msb_delta = tp->t_rblocks_delta; |
1da177e4 LT |
606 | msbp++; |
607 | } | |
608 | if (tp->t_rextents_delta != 0) { | |
609 | msbp->msb_field = XFS_SBS_REXTENTS; | |
20f4ebf2 | 610 | msbp->msb_delta = tp->t_rextents_delta; |
1da177e4 LT |
611 | msbp++; |
612 | } | |
613 | if (tp->t_rextslog_delta != 0) { | |
614 | msbp->msb_field = XFS_SBS_REXTSLOG; | |
20f4ebf2 | 615 | msbp->msb_delta = tp->t_rextslog_delta; |
1da177e4 LT |
616 | msbp++; |
617 | } | |
618 | } | |
619 | ||
620 | /* | |
621 | * If we need to change anything, do it. | |
622 | */ | |
623 | if (msbp > msb) { | |
624 | error = xfs_mod_incore_sb_batch(tp->t_mountp, msb, | |
625 | (uint)(msbp - msb), rsvd); | |
1b040712 CH |
626 | if (error) |
627 | goto out_undo_ifreecount; | |
1da177e4 | 628 | } |
1b040712 CH |
629 | |
630 | return; | |
631 | ||
632 | out_undo_ifreecount: | |
633 | if (ifreedelta) | |
634 | xfs_icsb_modify_counters(mp, XFS_SBS_IFREE, -ifreedelta, rsvd); | |
635 | out_undo_icount: | |
636 | if (idelta) | |
637 | xfs_icsb_modify_counters(mp, XFS_SBS_ICOUNT, -idelta, rsvd); | |
638 | out_undo_fdblocks: | |
639 | if (blkdelta) | |
640 | xfs_icsb_modify_counters(mp, XFS_SBS_FDBLOCKS, -blkdelta, rsvd); | |
641 | out: | |
1884bd83 | 642 | ASSERT(error == 0); |
1b040712 | 643 | return; |
1da177e4 LT |
644 | } |
645 | ||
e98c414f CH |
646 | /* |
647 | * Add the given log item to the transaction's list of log items. | |
648 | * | |
649 | * The log item will now point to its new descriptor with its li_desc field. | |
650 | */ | |
651 | void | |
652 | xfs_trans_add_item( | |
653 | struct xfs_trans *tp, | |
654 | struct xfs_log_item *lip) | |
655 | { | |
656 | struct xfs_log_item_desc *lidp; | |
657 | ||
f65020a8 JJ |
658 | ASSERT(lip->li_mountp == tp->t_mountp); |
659 | ASSERT(lip->li_ailp == tp->t_mountp->m_ail); | |
e98c414f | 660 | |
43869706 | 661 | lidp = kmem_zone_zalloc(xfs_log_item_desc_zone, KM_SLEEP | KM_NOFS); |
e98c414f CH |
662 | |
663 | lidp->lid_item = lip; | |
664 | lidp->lid_flags = 0; | |
e98c414f CH |
665 | list_add_tail(&lidp->lid_trans, &tp->t_items); |
666 | ||
667 | lip->li_desc = lidp; | |
668 | } | |
669 | ||
670 | STATIC void | |
671 | xfs_trans_free_item_desc( | |
672 | struct xfs_log_item_desc *lidp) | |
673 | { | |
674 | list_del_init(&lidp->lid_trans); | |
675 | kmem_zone_free(xfs_log_item_desc_zone, lidp); | |
676 | } | |
677 | ||
678 | /* | |
679 | * Unlink and free the given descriptor. | |
680 | */ | |
681 | void | |
682 | xfs_trans_del_item( | |
683 | struct xfs_log_item *lip) | |
684 | { | |
685 | xfs_trans_free_item_desc(lip->li_desc); | |
686 | lip->li_desc = NULL; | |
687 | } | |
688 | ||
689 | /* | |
690 | * Unlock all of the items of a transaction and free all the descriptors | |
691 | * of that transaction. | |
692 | */ | |
d17c701c | 693 | void |
e98c414f CH |
694 | xfs_trans_free_items( |
695 | struct xfs_trans *tp, | |
696 | xfs_lsn_t commit_lsn, | |
697 | int flags) | |
698 | { | |
699 | struct xfs_log_item_desc *lidp, *next; | |
700 | ||
701 | list_for_each_entry_safe(lidp, next, &tp->t_items, lid_trans) { | |
702 | struct xfs_log_item *lip = lidp->lid_item; | |
703 | ||
704 | lip->li_desc = NULL; | |
705 | ||
706 | if (commit_lsn != NULLCOMMITLSN) | |
904c17e6 | 707 | lip->li_ops->iop_committing(lip, commit_lsn); |
e98c414f CH |
708 | if (flags & XFS_TRANS_ABORT) |
709 | lip->li_flags |= XFS_LI_ABORTED; | |
904c17e6 | 710 | lip->li_ops->iop_unlock(lip); |
e98c414f CH |
711 | |
712 | xfs_trans_free_item_desc(lidp); | |
713 | } | |
714 | } | |
715 | ||
0e57f6a3 DC |
716 | static inline void |
717 | xfs_log_item_batch_insert( | |
718 | struct xfs_ail *ailp, | |
1d8c95a3 | 719 | struct xfs_ail_cursor *cur, |
0e57f6a3 DC |
720 | struct xfs_log_item **log_items, |
721 | int nr_items, | |
722 | xfs_lsn_t commit_lsn) | |
723 | { | |
724 | int i; | |
725 | ||
726 | spin_lock(&ailp->xa_lock); | |
727 | /* xfs_trans_ail_update_bulk drops ailp->xa_lock */ | |
1d8c95a3 | 728 | xfs_trans_ail_update_bulk(ailp, cur, log_items, nr_items, commit_lsn); |
0e57f6a3 | 729 | |
904c17e6 DC |
730 | for (i = 0; i < nr_items; i++) { |
731 | struct xfs_log_item *lip = log_items[i]; | |
732 | ||
733 | lip->li_ops->iop_unpin(lip, 0); | |
734 | } | |
0e57f6a3 DC |
735 | } |
736 | ||
737 | /* | |
738 | * Bulk operation version of xfs_trans_committed that takes a log vector of | |
739 | * items to insert into the AIL. This uses bulk AIL insertion techniques to | |
740 | * minimise lock traffic. | |
e34a314c DC |
741 | * |
742 | * If we are called with the aborted flag set, it is because a log write during | |
743 | * a CIL checkpoint commit has failed. In this case, all the items in the | |
904c17e6 | 744 | * checkpoint have already gone through iop_commited and iop_unlock, which |
e34a314c DC |
745 | * means that checkpoint commit abort handling is treated exactly the same |
746 | * as an iclog write error even though we haven't started any IO yet. Hence in | |
904c17e6 DC |
747 | * this case all we need to do is iop_committed processing, followed by an |
748 | * iop_unpin(aborted) call. | |
1d8c95a3 DC |
749 | * |
750 | * The AIL cursor is used to optimise the insert process. If commit_lsn is not | |
751 | * at the end of the AIL, the insert cursor avoids the need to walk | |
752 | * the AIL to find the insertion point on every xfs_log_item_batch_insert() | |
753 | * call. This saves a lot of needless list walking and is a net win, even | |
754 | * though it slightly increases that amount of AIL lock traffic to set it up | |
755 | * and tear it down. | |
0e57f6a3 DC |
756 | */ |
757 | void | |
758 | xfs_trans_committed_bulk( | |
759 | struct xfs_ail *ailp, | |
760 | struct xfs_log_vec *log_vector, | |
761 | xfs_lsn_t commit_lsn, | |
762 | int aborted) | |
763 | { | |
764 | #define LOG_ITEM_BATCH_SIZE 32 | |
765 | struct xfs_log_item *log_items[LOG_ITEM_BATCH_SIZE]; | |
766 | struct xfs_log_vec *lv; | |
1d8c95a3 | 767 | struct xfs_ail_cursor cur; |
0e57f6a3 DC |
768 | int i = 0; |
769 | ||
1d8c95a3 DC |
770 | spin_lock(&ailp->xa_lock); |
771 | xfs_trans_ail_cursor_last(ailp, &cur, commit_lsn); | |
772 | spin_unlock(&ailp->xa_lock); | |
773 | ||
0e57f6a3 DC |
774 | /* unpin all the log items */ |
775 | for (lv = log_vector; lv; lv = lv->lv_next ) { | |
776 | struct xfs_log_item *lip = lv->lv_item; | |
777 | xfs_lsn_t item_lsn; | |
778 | ||
779 | if (aborted) | |
780 | lip->li_flags |= XFS_LI_ABORTED; | |
904c17e6 | 781 | item_lsn = lip->li_ops->iop_committed(lip, commit_lsn); |
0e57f6a3 | 782 | |
1316d4da | 783 | /* item_lsn of -1 means the item needs no further processing */ |
0e57f6a3 DC |
784 | if (XFS_LSN_CMP(item_lsn, (xfs_lsn_t)-1) == 0) |
785 | continue; | |
786 | ||
e34a314c DC |
787 | /* |
788 | * if we are aborting the operation, no point in inserting the | |
789 | * object into the AIL as we are in a shutdown situation. | |
790 | */ | |
791 | if (aborted) { | |
792 | ASSERT(XFS_FORCED_SHUTDOWN(ailp->xa_mount)); | |
904c17e6 | 793 | lip->li_ops->iop_unpin(lip, 1); |
e34a314c DC |
794 | continue; |
795 | } | |
796 | ||
0e57f6a3 DC |
797 | if (item_lsn != commit_lsn) { |
798 | ||
799 | /* | |
800 | * Not a bulk update option due to unusual item_lsn. | |
801 | * Push into AIL immediately, rechecking the lsn once | |
1d8c95a3 DC |
802 | * we have the ail lock. Then unpin the item. This does |
803 | * not affect the AIL cursor the bulk insert path is | |
804 | * using. | |
0e57f6a3 DC |
805 | */ |
806 | spin_lock(&ailp->xa_lock); | |
807 | if (XFS_LSN_CMP(item_lsn, lip->li_lsn) > 0) | |
808 | xfs_trans_ail_update(ailp, lip, item_lsn); | |
809 | else | |
810 | spin_unlock(&ailp->xa_lock); | |
904c17e6 | 811 | lip->li_ops->iop_unpin(lip, 0); |
0e57f6a3 DC |
812 | continue; |
813 | } | |
814 | ||
815 | /* Item is a candidate for bulk AIL insert. */ | |
816 | log_items[i++] = lv->lv_item; | |
817 | if (i >= LOG_ITEM_BATCH_SIZE) { | |
1d8c95a3 | 818 | xfs_log_item_batch_insert(ailp, &cur, log_items, |
0e57f6a3 DC |
819 | LOG_ITEM_BATCH_SIZE, commit_lsn); |
820 | i = 0; | |
821 | } | |
822 | } | |
823 | ||
824 | /* make sure we insert the remainder! */ | |
825 | if (i) | |
1d8c95a3 DC |
826 | xfs_log_item_batch_insert(ailp, &cur, log_items, i, commit_lsn); |
827 | ||
828 | spin_lock(&ailp->xa_lock); | |
e4a1e29c | 829 | xfs_trans_ail_cursor_done(&cur); |
1d8c95a3 | 830 | spin_unlock(&ailp->xa_lock); |
0e57f6a3 DC |
831 | } |
832 | ||
0924378a | 833 | /* |
b1037058 | 834 | * Commit the given transaction to the log. |
0924378a DC |
835 | * |
836 | * XFS disk error handling mechanism is not based on a typical | |
837 | * transaction abort mechanism. Logically after the filesystem | |
838 | * gets marked 'SHUTDOWN', we can't let any new transactions | |
839 | * be durable - ie. committed to disk - because some metadata might | |
840 | * be inconsistent. In such cases, this returns an error, and the | |
841 | * caller may assume that all locked objects joined to the transaction | |
842 | * have already been unlocked as if the commit had succeeded. | |
843 | * Do not reference the transaction structure after this call. | |
844 | */ | |
0924378a | 845 | int |
b1037058 | 846 | xfs_trans_commit( |
a3ccd2ca | 847 | struct xfs_trans *tp, |
b1037058 | 848 | uint flags) |
0924378a | 849 | { |
a3ccd2ca | 850 | struct xfs_mount *mp = tp->t_mountp; |
0924378a | 851 | xfs_lsn_t commit_lsn = -1; |
a3ccd2ca | 852 | int error = 0; |
0924378a DC |
853 | int log_flags = 0; |
854 | int sync = tp->t_flags & XFS_TRANS_SYNC; | |
0924378a DC |
855 | |
856 | /* | |
857 | * Determine whether this commit is releasing a permanent | |
858 | * log reservation or not. | |
859 | */ | |
860 | if (flags & XFS_TRANS_RELEASE_LOG_RES) { | |
861 | ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES); | |
862 | log_flags = XFS_LOG_REL_PERM_RESERV; | |
863 | } | |
864 | ||
865 | /* | |
866 | * If there is nothing to be logged by the transaction, | |
867 | * then unlock all of the items associated with the | |
868 | * transaction and free the transaction structure. | |
869 | * Also make sure to return any reserved blocks to | |
870 | * the free pool. | |
871 | */ | |
a3ccd2ca CH |
872 | if (!(tp->t_flags & XFS_TRANS_DIRTY)) |
873 | goto out_unreserve; | |
874 | ||
875 | if (XFS_FORCED_SHUTDOWN(mp)) { | |
2451337d | 876 | error = -EIO; |
a3ccd2ca | 877 | goto out_unreserve; |
0924378a | 878 | } |
a3ccd2ca | 879 | |
0924378a DC |
880 | ASSERT(tp->t_ticket != NULL); |
881 | ||
882 | /* | |
883 | * If we need to update the superblock, then do it now. | |
884 | */ | |
885 | if (tp->t_flags & XFS_TRANS_SB_DIRTY) | |
886 | xfs_trans_apply_sb_deltas(tp); | |
887 | xfs_trans_apply_dquot_deltas(tp); | |
888 | ||
c6f97264 | 889 | xfs_log_commit_cil(mp, tp, &commit_lsn, flags); |
1da177e4 | 890 | |
0244b960 CH |
891 | current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); |
892 | xfs_trans_free(tp); | |
893 | ||
1da177e4 LT |
894 | /* |
895 | * If the transaction needs to be synchronous, then force the | |
896 | * log out now and wait for it. | |
897 | */ | |
898 | if (sync) { | |
c6f97264 | 899 | error = _xfs_log_force_lsn(mp, commit_lsn, XFS_LOG_SYNC, NULL); |
1da177e4 LT |
900 | XFS_STATS_INC(xs_trans_sync); |
901 | } else { | |
902 | XFS_STATS_INC(xs_trans_async); | |
903 | } | |
904 | ||
a3ccd2ca CH |
905 | return error; |
906 | ||
907 | out_unreserve: | |
908 | xfs_trans_unreserve_and_mod_sb(tp); | |
909 | ||
910 | /* | |
911 | * It is indeed possible for the transaction to be not dirty but | |
912 | * the dqinfo portion to be. All that means is that we have some | |
913 | * (non-persistent) quota reservations that need to be unreserved. | |
914 | */ | |
915 | xfs_trans_unreserve_and_mod_dquots(tp); | |
916 | if (tp->t_ticket) { | |
917 | commit_lsn = xfs_log_done(mp, tp->t_ticket, NULL, log_flags); | |
918 | if (commit_lsn == -1 && !error) | |
2451337d | 919 | error = -EIO; |
a3ccd2ca CH |
920 | } |
921 | current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); | |
71e330b5 | 922 | xfs_trans_free_items(tp, NULLCOMMITLSN, error ? XFS_TRANS_ABORT : 0); |
a3ccd2ca CH |
923 | xfs_trans_free(tp); |
924 | ||
925 | XFS_STATS_INC(xs_trans_empty); | |
926 | return error; | |
1da177e4 LT |
927 | } |
928 | ||
1da177e4 LT |
929 | /* |
930 | * Unlock all of the transaction's items and free the transaction. | |
931 | * The transaction must not have modified any of its items, because | |
932 | * there is no way to restore them to their previous state. | |
933 | * | |
934 | * If the transaction has made a log reservation, make sure to release | |
935 | * it as well. | |
936 | */ | |
937 | void | |
938 | xfs_trans_cancel( | |
939 | xfs_trans_t *tp, | |
940 | int flags) | |
941 | { | |
942 | int log_flags; | |
0733af21 | 943 | xfs_mount_t *mp = tp->t_mountp; |
1da177e4 LT |
944 | |
945 | /* | |
946 | * See if the caller is being too lazy to figure out if | |
947 | * the transaction really needs an abort. | |
948 | */ | |
949 | if ((flags & XFS_TRANS_ABORT) && !(tp->t_flags & XFS_TRANS_DIRTY)) | |
950 | flags &= ~XFS_TRANS_ABORT; | |
951 | /* | |
952 | * See if the caller is relying on us to shut down the | |
953 | * filesystem. This happens in paths where we detect | |
954 | * corruption and decide to give up. | |
955 | */ | |
60a204f0 | 956 | if ((tp->t_flags & XFS_TRANS_DIRTY) && !XFS_FORCED_SHUTDOWN(mp)) { |
0733af21 | 957 | XFS_ERROR_REPORT("xfs_trans_cancel", XFS_ERRLEVEL_LOW, mp); |
7d04a335 | 958 | xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); |
60a204f0 | 959 | } |
1da177e4 | 960 | #ifdef DEBUG |
e98c414f CH |
961 | if (!(flags & XFS_TRANS_ABORT) && !XFS_FORCED_SHUTDOWN(mp)) { |
962 | struct xfs_log_item_desc *lidp; | |
963 | ||
964 | list_for_each_entry(lidp, &tp->t_items, lid_trans) | |
965 | ASSERT(!(lidp->lid_item->li_type == XFS_LI_EFD)); | |
1da177e4 LT |
966 | } |
967 | #endif | |
968 | xfs_trans_unreserve_and_mod_sb(tp); | |
7d095257 | 969 | xfs_trans_unreserve_and_mod_dquots(tp); |
1da177e4 LT |
970 | |
971 | if (tp->t_ticket) { | |
972 | if (flags & XFS_TRANS_RELEASE_LOG_RES) { | |
973 | ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES); | |
974 | log_flags = XFS_LOG_REL_PERM_RESERV; | |
975 | } else { | |
976 | log_flags = 0; | |
977 | } | |
0733af21 | 978 | xfs_log_done(mp, tp->t_ticket, NULL, log_flags); |
1da177e4 LT |
979 | } |
980 | ||
981 | /* mark this thread as no longer being in a transaction */ | |
59c1b082 | 982 | current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); |
1da177e4 | 983 | |
71e330b5 | 984 | xfs_trans_free_items(tp, NULLCOMMITLSN, flags); |
1da177e4 LT |
985 | xfs_trans_free(tp); |
986 | } | |
987 | ||
322ff6b8 NS |
988 | /* |
989 | * Roll from one trans in the sequence of PERMANENT transactions to | |
990 | * the next: permanent transactions are only flushed out when | |
991 | * committed with XFS_TRANS_RELEASE_LOG_RES, but we still want as soon | |
992 | * as possible to let chunks of it go to the log. So we commit the | |
993 | * chunk we've been working on and get a new transaction to continue. | |
994 | */ | |
995 | int | |
996 | xfs_trans_roll( | |
997 | struct xfs_trans **tpp, | |
998 | struct xfs_inode *dp) | |
999 | { | |
1000 | struct xfs_trans *trans; | |
3d3c8b52 | 1001 | struct xfs_trans_res tres; |
322ff6b8 NS |
1002 | int error; |
1003 | ||
1004 | /* | |
1005 | * Ensure that the inode is always logged. | |
1006 | */ | |
1007 | trans = *tpp; | |
1008 | xfs_trans_log_inode(trans, dp, XFS_ILOG_CORE); | |
1009 | ||
1010 | /* | |
1011 | * Copy the critical parameters from one trans to the next. | |
1012 | */ | |
3d3c8b52 JL |
1013 | tres.tr_logres = trans->t_log_res; |
1014 | tres.tr_logcount = trans->t_log_count; | |
322ff6b8 NS |
1015 | *tpp = xfs_trans_dup(trans); |
1016 | ||
1017 | /* | |
1018 | * Commit the current transaction. | |
1019 | * If this commit failed, then it'd just unlock those items that | |
1020 | * are not marked ihold. That also means that a filesystem shutdown | |
1021 | * is in progress. The caller takes the responsibility to cancel | |
1022 | * the duplicate transaction that gets returned. | |
1023 | */ | |
1024 | error = xfs_trans_commit(trans, 0); | |
1025 | if (error) | |
d99831ff | 1026 | return error; |
322ff6b8 NS |
1027 | |
1028 | trans = *tpp; | |
1029 | ||
cc09c0dc DC |
1030 | /* |
1031 | * transaction commit worked ok so we can drop the extra ticket | |
1032 | * reference that we gained in xfs_trans_dup() | |
1033 | */ | |
1034 | xfs_log_ticket_put(trans->t_ticket); | |
1035 | ||
1036 | ||
322ff6b8 NS |
1037 | /* |
1038 | * Reserve space in the log for th next transaction. | |
1039 | * This also pushes items in the "AIL", the list of logged items, | |
1040 | * out to disk if they are taking up space at the tail of the log | |
1041 | * that we want to use. This requires that either nothing be locked | |
1042 | * across this call, or that anything that is locked be logged in | |
1043 | * the prior and the next transactions. | |
1044 | */ | |
3d3c8b52 JL |
1045 | tres.tr_logflags = XFS_TRANS_PERM_LOG_RES; |
1046 | error = xfs_trans_reserve(trans, &tres, 0, 0); | |
322ff6b8 NS |
1047 | /* |
1048 | * Ensure that the inode is in the new transaction and locked. | |
1049 | */ | |
1050 | if (error) | |
1051 | return error; | |
1052 | ||
ddc3415a | 1053 | xfs_trans_ijoin(trans, dp, 0); |
322ff6b8 NS |
1054 | return 0; |
1055 | } |