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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" |
6ca1c906 | 21 | #include "xfs_format.h" |
1da177e4 LT |
22 | #include "xfs_log.h" |
23 | #include "xfs_trans.h" | |
24 | #include "xfs_sb.h" | |
25 | #include "xfs_ag.h" | |
1da177e4 LT |
26 | #include "xfs_mount.h" |
27 | #include "xfs_error.h" | |
a844f451 | 28 | #include "xfs_da_btree.h" |
1da177e4 | 29 | #include "xfs_bmap_btree.h" |
a844f451 | 30 | #include "xfs_alloc_btree.h" |
1da177e4 | 31 | #include "xfs_ialloc_btree.h" |
1da177e4 LT |
32 | #include "xfs_dinode.h" |
33 | #include "xfs_inode.h" | |
a844f451 NS |
34 | #include "xfs_btree.h" |
35 | #include "xfs_ialloc.h" | |
36 | #include "xfs_alloc.h" | |
efc27b52 | 37 | #include "xfs_extent_busy.h" |
1da177e4 | 38 | #include "xfs_bmap.h" |
1da177e4 | 39 | #include "xfs_quota.h" |
4f3b5783 | 40 | #include "xfs_qm.h" |
a844f451 | 41 | #include "xfs_trans_priv.h" |
1da177e4 | 42 | #include "xfs_trans_space.h" |
322ff6b8 | 43 | #include "xfs_inode_item.h" |
4f3b5783 JL |
44 | #include "xfs_log_priv.h" |
45 | #include "xfs_buf_item.h" | |
ed3b4d6c | 46 | #include "xfs_trace.h" |
1da177e4 | 47 | |
8f794055 | 48 | kmem_zone_t *xfs_trans_zone; |
e98c414f | 49 | kmem_zone_t *xfs_log_item_desc_zone; |
1da177e4 | 50 | |
1da177e4 LT |
51 | /* |
52 | * Initialize the precomputed transaction reservation values | |
53 | * in the mount structure. | |
54 | */ | |
55 | void | |
56 | xfs_trans_init( | |
025101dc | 57 | struct xfs_mount *mp) |
1da177e4 | 58 | { |
3d3c8b52 | 59 | xfs_trans_resv_calc(mp, M_RES(mp)); |
1da177e4 LT |
60 | } |
61 | ||
62 | /* | |
63 | * This routine is called to allocate a transaction structure. | |
64 | * The type parameter indicates the type of the transaction. These | |
65 | * are enumerated in xfs_trans.h. | |
b2ce3974 AE |
66 | * |
67 | * Dynamically allocate the transaction structure from the transaction | |
68 | * zone, initialize it, and return it to the caller. | |
1da177e4 | 69 | */ |
b2ce3974 AE |
70 | xfs_trans_t * |
71 | xfs_trans_alloc( | |
72 | xfs_mount_t *mp, | |
73 | uint type) | |
74 | { | |
d9457dc0 JK |
75 | xfs_trans_t *tp; |
76 | ||
77 | sb_start_intwrite(mp->m_super); | |
78 | tp = _xfs_trans_alloc(mp, type, KM_SLEEP); | |
79 | tp->t_flags |= XFS_TRANS_FREEZE_PROT; | |
80 | return tp; | |
b2ce3974 AE |
81 | } |
82 | ||
83 | xfs_trans_t * | |
1da177e4 | 84 | _xfs_trans_alloc( |
b2ce3974 AE |
85 | xfs_mount_t *mp, |
86 | uint type, | |
77ba7877 | 87 | xfs_km_flags_t memflags) |
1da177e4 | 88 | { |
b2ce3974 | 89 | xfs_trans_t *tp; |
1da177e4 | 90 | |
d9457dc0 | 91 | WARN_ON(mp->m_super->s_writers.frozen == SB_FREEZE_COMPLETE); |
34327e13 | 92 | atomic_inc(&mp->m_active_trans); |
1da177e4 | 93 | |
80641dc6 | 94 | tp = kmem_zone_zalloc(xfs_trans_zone, memflags); |
2a3c0acc | 95 | tp->t_magic = XFS_TRANS_HEADER_MAGIC; |
1da177e4 LT |
96 | tp->t_type = type; |
97 | tp->t_mountp = mp; | |
e98c414f | 98 | INIT_LIST_HEAD(&tp->t_items); |
ed3b4d6c | 99 | INIT_LIST_HEAD(&tp->t_busy); |
34327e13 | 100 | return tp; |
1da177e4 LT |
101 | } |
102 | ||
b1c1b5b6 DC |
103 | /* |
104 | * Free the transaction structure. If there is more clean up | |
105 | * to do when the structure is freed, add it here. | |
106 | */ | |
107 | STATIC void | |
108 | xfs_trans_free( | |
ed3b4d6c | 109 | struct xfs_trans *tp) |
b1c1b5b6 | 110 | { |
4ecbfe63 DC |
111 | xfs_extent_busy_sort(&tp->t_busy); |
112 | xfs_extent_busy_clear(tp->t_mountp, &tp->t_busy, false); | |
ed3b4d6c | 113 | |
b1c1b5b6 | 114 | atomic_dec(&tp->t_mountp->m_active_trans); |
d9457dc0 JK |
115 | if (tp->t_flags & XFS_TRANS_FREEZE_PROT) |
116 | sb_end_intwrite(tp->t_mountp->m_super); | |
b1c1b5b6 DC |
117 | xfs_trans_free_dqinfo(tp); |
118 | kmem_zone_free(xfs_trans_zone, tp); | |
119 | } | |
120 | ||
1da177e4 LT |
121 | /* |
122 | * This is called to create a new transaction which will share the | |
123 | * permanent log reservation of the given transaction. The remaining | |
124 | * unused block and rt extent reservations are also inherited. This | |
125 | * implies that the original transaction is no longer allowed to allocate | |
126 | * blocks. Locks and log items, however, are no inherited. They must | |
127 | * be added to the new transaction explicitly. | |
128 | */ | |
129 | xfs_trans_t * | |
130 | xfs_trans_dup( | |
131 | xfs_trans_t *tp) | |
132 | { | |
133 | xfs_trans_t *ntp; | |
134 | ||
135 | ntp = kmem_zone_zalloc(xfs_trans_zone, KM_SLEEP); | |
136 | ||
137 | /* | |
138 | * Initialize the new transaction structure. | |
139 | */ | |
2a3c0acc | 140 | ntp->t_magic = XFS_TRANS_HEADER_MAGIC; |
1da177e4 LT |
141 | ntp->t_type = tp->t_type; |
142 | ntp->t_mountp = tp->t_mountp; | |
e98c414f | 143 | INIT_LIST_HEAD(&ntp->t_items); |
ed3b4d6c | 144 | INIT_LIST_HEAD(&ntp->t_busy); |
1da177e4 LT |
145 | |
146 | ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES); | |
1da177e4 | 147 | ASSERT(tp->t_ticket != NULL); |
cfcbbbd0 | 148 | |
d9457dc0 JK |
149 | ntp->t_flags = XFS_TRANS_PERM_LOG_RES | |
150 | (tp->t_flags & XFS_TRANS_RESERVE) | | |
151 | (tp->t_flags & XFS_TRANS_FREEZE_PROT); | |
152 | /* We gave our writer reference to the new transaction */ | |
153 | tp->t_flags &= ~XFS_TRANS_FREEZE_PROT; | |
cc09c0dc | 154 | ntp->t_ticket = xfs_log_ticket_get(tp->t_ticket); |
1da177e4 LT |
155 | ntp->t_blk_res = tp->t_blk_res - tp->t_blk_res_used; |
156 | tp->t_blk_res = tp->t_blk_res_used; | |
157 | ntp->t_rtx_res = tp->t_rtx_res - tp->t_rtx_res_used; | |
158 | tp->t_rtx_res = tp->t_rtx_res_used; | |
59c1b082 | 159 | ntp->t_pflags = tp->t_pflags; |
1da177e4 | 160 | |
7d095257 | 161 | xfs_trans_dup_dqinfo(tp, ntp); |
1da177e4 LT |
162 | |
163 | atomic_inc(&tp->t_mountp->m_active_trans); | |
164 | return ntp; | |
165 | } | |
166 | ||
167 | /* | |
168 | * This is called to reserve free disk blocks and log space for the | |
169 | * given transaction. This must be done before allocating any resources | |
170 | * within the transaction. | |
171 | * | |
172 | * This will return ENOSPC if there are not enough blocks available. | |
173 | * It will sleep waiting for available log space. | |
174 | * The only valid value for the flags parameter is XFS_RES_LOG_PERM, which | |
175 | * is used by long running transactions. If any one of the reservations | |
176 | * fails then they will all be backed out. | |
177 | * | |
178 | * This does not do quota reservations. That typically is done by the | |
179 | * caller afterwards. | |
180 | */ | |
181 | int | |
182 | xfs_trans_reserve( | |
3d3c8b52 JL |
183 | struct xfs_trans *tp, |
184 | struct xfs_trans_res *resp, | |
185 | uint blocks, | |
186 | uint rtextents) | |
1da177e4 | 187 | { |
59c1b082 NS |
188 | int error = 0; |
189 | int rsvd = (tp->t_flags & XFS_TRANS_RESERVE) != 0; | |
1da177e4 LT |
190 | |
191 | /* Mark this thread as being in a transaction */ | |
59c1b082 | 192 | current_set_flags_nested(&tp->t_pflags, PF_FSTRANS); |
1da177e4 LT |
193 | |
194 | /* | |
195 | * Attempt to reserve the needed disk blocks by decrementing | |
196 | * the number needed from the number available. This will | |
197 | * fail if the count would go below zero. | |
198 | */ | |
199 | if (blocks > 0) { | |
96540c78 | 200 | error = xfs_icsb_modify_counters(tp->t_mountp, XFS_SBS_FDBLOCKS, |
20f4ebf2 | 201 | -((int64_t)blocks), rsvd); |
1da177e4 | 202 | if (error != 0) { |
59c1b082 | 203 | current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); |
1da177e4 LT |
204 | return (XFS_ERROR(ENOSPC)); |
205 | } | |
206 | tp->t_blk_res += blocks; | |
207 | } | |
208 | ||
209 | /* | |
210 | * Reserve the log space needed for this transaction. | |
211 | */ | |
3d3c8b52 | 212 | if (resp->tr_logres > 0) { |
9006fb91 CH |
213 | bool permanent = false; |
214 | ||
3d3c8b52 JL |
215 | ASSERT(tp->t_log_res == 0 || |
216 | tp->t_log_res == resp->tr_logres); | |
217 | ASSERT(tp->t_log_count == 0 || | |
218 | tp->t_log_count == resp->tr_logcount); | |
9006fb91 | 219 | |
3d3c8b52 | 220 | if (resp->tr_logflags & XFS_TRANS_PERM_LOG_RES) { |
1da177e4 | 221 | tp->t_flags |= XFS_TRANS_PERM_LOG_RES; |
9006fb91 | 222 | permanent = true; |
1da177e4 LT |
223 | } else { |
224 | ASSERT(tp->t_ticket == NULL); | |
225 | ASSERT(!(tp->t_flags & XFS_TRANS_PERM_LOG_RES)); | |
1da177e4 LT |
226 | } |
227 | ||
9006fb91 | 228 | if (tp->t_ticket != NULL) { |
3d3c8b52 | 229 | ASSERT(resp->tr_logflags & XFS_TRANS_PERM_LOG_RES); |
9006fb91 CH |
230 | error = xfs_log_regrant(tp->t_mountp, tp->t_ticket); |
231 | } else { | |
3d3c8b52 JL |
232 | error = xfs_log_reserve(tp->t_mountp, |
233 | resp->tr_logres, | |
234 | resp->tr_logcount, | |
235 | &tp->t_ticket, XFS_TRANSACTION, | |
236 | permanent, tp->t_type); | |
1da177e4 | 237 | } |
9006fb91 CH |
238 | |
239 | if (error) | |
240 | goto undo_blocks; | |
241 | ||
3d3c8b52 JL |
242 | tp->t_log_res = resp->tr_logres; |
243 | tp->t_log_count = resp->tr_logcount; | |
1da177e4 LT |
244 | } |
245 | ||
246 | /* | |
247 | * Attempt to reserve the needed realtime extents by decrementing | |
248 | * the number needed from the number available. This will | |
249 | * fail if the count would go below zero. | |
250 | */ | |
251 | if (rtextents > 0) { | |
252 | error = xfs_mod_incore_sb(tp->t_mountp, XFS_SBS_FREXTENTS, | |
20f4ebf2 | 253 | -((int64_t)rtextents), rsvd); |
1da177e4 LT |
254 | if (error) { |
255 | error = XFS_ERROR(ENOSPC); | |
256 | goto undo_log; | |
257 | } | |
258 | tp->t_rtx_res += rtextents; | |
259 | } | |
260 | ||
261 | return 0; | |
262 | ||
263 | /* | |
264 | * Error cases jump to one of these labels to undo any | |
265 | * reservations which have already been performed. | |
266 | */ | |
267 | undo_log: | |
3d3c8b52 | 268 | if (resp->tr_logres > 0) { |
9006fb91 CH |
269 | int log_flags; |
270 | ||
3d3c8b52 | 271 | if (resp->tr_logflags & XFS_TRANS_PERM_LOG_RES) { |
1da177e4 LT |
272 | log_flags = XFS_LOG_REL_PERM_RESERV; |
273 | } else { | |
274 | log_flags = 0; | |
275 | } | |
276 | xfs_log_done(tp->t_mountp, tp->t_ticket, NULL, log_flags); | |
277 | tp->t_ticket = NULL; | |
278 | tp->t_log_res = 0; | |
279 | tp->t_flags &= ~XFS_TRANS_PERM_LOG_RES; | |
280 | } | |
281 | ||
282 | undo_blocks: | |
283 | if (blocks > 0) { | |
96540c78 | 284 | xfs_icsb_modify_counters(tp->t_mountp, XFS_SBS_FDBLOCKS, |
20f4ebf2 | 285 | (int64_t)blocks, rsvd); |
1da177e4 LT |
286 | tp->t_blk_res = 0; |
287 | } | |
288 | ||
59c1b082 | 289 | current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); |
1da177e4 | 290 | |
59c1b082 | 291 | return error; |
1da177e4 LT |
292 | } |
293 | ||
1da177e4 LT |
294 | /* |
295 | * Record the indicated change to the given field for application | |
296 | * to the file system's superblock when the transaction commits. | |
297 | * For now, just store the change in the transaction structure. | |
298 | * | |
299 | * Mark the transaction structure to indicate that the superblock | |
300 | * needs to be updated before committing. | |
92821e2b DC |
301 | * |
302 | * Because we may not be keeping track of allocated/free inodes and | |
303 | * used filesystem blocks in the superblock, we do not mark the | |
304 | * superblock dirty in this transaction if we modify these fields. | |
305 | * We still need to update the transaction deltas so that they get | |
306 | * applied to the incore superblock, but we don't want them to | |
307 | * cause the superblock to get locked and logged if these are the | |
308 | * only fields in the superblock that the transaction modifies. | |
1da177e4 LT |
309 | */ |
310 | void | |
311 | xfs_trans_mod_sb( | |
312 | xfs_trans_t *tp, | |
313 | uint field, | |
20f4ebf2 | 314 | int64_t delta) |
1da177e4 | 315 | { |
92821e2b DC |
316 | uint32_t flags = (XFS_TRANS_DIRTY|XFS_TRANS_SB_DIRTY); |
317 | xfs_mount_t *mp = tp->t_mountp; | |
1da177e4 LT |
318 | |
319 | switch (field) { | |
320 | case XFS_TRANS_SB_ICOUNT: | |
321 | tp->t_icount_delta += delta; | |
92821e2b DC |
322 | if (xfs_sb_version_haslazysbcount(&mp->m_sb)) |
323 | flags &= ~XFS_TRANS_SB_DIRTY; | |
1da177e4 LT |
324 | break; |
325 | case XFS_TRANS_SB_IFREE: | |
326 | tp->t_ifree_delta += delta; | |
92821e2b DC |
327 | if (xfs_sb_version_haslazysbcount(&mp->m_sb)) |
328 | flags &= ~XFS_TRANS_SB_DIRTY; | |
1da177e4 LT |
329 | break; |
330 | case XFS_TRANS_SB_FDBLOCKS: | |
331 | /* | |
332 | * Track the number of blocks allocated in the | |
333 | * transaction. Make sure it does not exceed the | |
334 | * number reserved. | |
335 | */ | |
336 | if (delta < 0) { | |
337 | tp->t_blk_res_used += (uint)-delta; | |
338 | ASSERT(tp->t_blk_res_used <= tp->t_blk_res); | |
339 | } | |
340 | tp->t_fdblocks_delta += delta; | |
92821e2b DC |
341 | if (xfs_sb_version_haslazysbcount(&mp->m_sb)) |
342 | flags &= ~XFS_TRANS_SB_DIRTY; | |
1da177e4 LT |
343 | break; |
344 | case XFS_TRANS_SB_RES_FDBLOCKS: | |
345 | /* | |
346 | * The allocation has already been applied to the | |
347 | * in-core superblock's counter. This should only | |
348 | * be applied to the on-disk superblock. | |
349 | */ | |
350 | ASSERT(delta < 0); | |
351 | tp->t_res_fdblocks_delta += delta; | |
92821e2b DC |
352 | if (xfs_sb_version_haslazysbcount(&mp->m_sb)) |
353 | flags &= ~XFS_TRANS_SB_DIRTY; | |
1da177e4 LT |
354 | break; |
355 | case XFS_TRANS_SB_FREXTENTS: | |
356 | /* | |
357 | * Track the number of blocks allocated in the | |
358 | * transaction. Make sure it does not exceed the | |
359 | * number reserved. | |
360 | */ | |
361 | if (delta < 0) { | |
362 | tp->t_rtx_res_used += (uint)-delta; | |
363 | ASSERT(tp->t_rtx_res_used <= tp->t_rtx_res); | |
364 | } | |
365 | tp->t_frextents_delta += delta; | |
366 | break; | |
367 | case XFS_TRANS_SB_RES_FREXTENTS: | |
368 | /* | |
369 | * The allocation has already been applied to the | |
c41564b5 | 370 | * in-core superblock's counter. This should only |
1da177e4 LT |
371 | * be applied to the on-disk superblock. |
372 | */ | |
373 | ASSERT(delta < 0); | |
374 | tp->t_res_frextents_delta += delta; | |
375 | break; | |
376 | case XFS_TRANS_SB_DBLOCKS: | |
377 | ASSERT(delta > 0); | |
378 | tp->t_dblocks_delta += delta; | |
379 | break; | |
380 | case XFS_TRANS_SB_AGCOUNT: | |
381 | ASSERT(delta > 0); | |
382 | tp->t_agcount_delta += delta; | |
383 | break; | |
384 | case XFS_TRANS_SB_IMAXPCT: | |
385 | tp->t_imaxpct_delta += delta; | |
386 | break; | |
387 | case XFS_TRANS_SB_REXTSIZE: | |
388 | tp->t_rextsize_delta += delta; | |
389 | break; | |
390 | case XFS_TRANS_SB_RBMBLOCKS: | |
391 | tp->t_rbmblocks_delta += delta; | |
392 | break; | |
393 | case XFS_TRANS_SB_RBLOCKS: | |
394 | tp->t_rblocks_delta += delta; | |
395 | break; | |
396 | case XFS_TRANS_SB_REXTENTS: | |
397 | tp->t_rextents_delta += delta; | |
398 | break; | |
399 | case XFS_TRANS_SB_REXTSLOG: | |
400 | tp->t_rextslog_delta += delta; | |
401 | break; | |
402 | default: | |
403 | ASSERT(0); | |
404 | return; | |
405 | } | |
406 | ||
210c6f1c | 407 | tp->t_flags |= flags; |
1da177e4 LT |
408 | } |
409 | ||
410 | /* | |
411 | * xfs_trans_apply_sb_deltas() is called from the commit code | |
412 | * to bring the superblock buffer into the current transaction | |
413 | * and modify it as requested by earlier calls to xfs_trans_mod_sb(). | |
414 | * | |
415 | * For now we just look at each field allowed to change and change | |
416 | * it if necessary. | |
417 | */ | |
418 | STATIC void | |
419 | xfs_trans_apply_sb_deltas( | |
420 | xfs_trans_t *tp) | |
421 | { | |
2bdf7cd0 | 422 | xfs_dsb_t *sbp; |
1da177e4 LT |
423 | xfs_buf_t *bp; |
424 | int whole = 0; | |
425 | ||
426 | bp = xfs_trans_getsb(tp, tp->t_mountp, 0); | |
427 | sbp = XFS_BUF_TO_SBP(bp); | |
428 | ||
429 | /* | |
430 | * Check that superblock mods match the mods made to AGF counters. | |
431 | */ | |
432 | ASSERT((tp->t_fdblocks_delta + tp->t_res_fdblocks_delta) == | |
433 | (tp->t_ag_freeblks_delta + tp->t_ag_flist_delta + | |
434 | tp->t_ag_btree_delta)); | |
435 | ||
92821e2b DC |
436 | /* |
437 | * Only update the superblock counters if we are logging them | |
438 | */ | |
439 | if (!xfs_sb_version_haslazysbcount(&(tp->t_mountp->m_sb))) { | |
2bdf7cd0 | 440 | if (tp->t_icount_delta) |
413d57c9 | 441 | be64_add_cpu(&sbp->sb_icount, tp->t_icount_delta); |
2bdf7cd0 | 442 | if (tp->t_ifree_delta) |
413d57c9 | 443 | be64_add_cpu(&sbp->sb_ifree, tp->t_ifree_delta); |
2bdf7cd0 | 444 | if (tp->t_fdblocks_delta) |
413d57c9 | 445 | be64_add_cpu(&sbp->sb_fdblocks, tp->t_fdblocks_delta); |
2bdf7cd0 | 446 | if (tp->t_res_fdblocks_delta) |
413d57c9 | 447 | be64_add_cpu(&sbp->sb_fdblocks, tp->t_res_fdblocks_delta); |
1da177e4 LT |
448 | } |
449 | ||
2bdf7cd0 | 450 | if (tp->t_frextents_delta) |
413d57c9 | 451 | be64_add_cpu(&sbp->sb_frextents, tp->t_frextents_delta); |
2bdf7cd0 | 452 | if (tp->t_res_frextents_delta) |
413d57c9 | 453 | be64_add_cpu(&sbp->sb_frextents, tp->t_res_frextents_delta); |
2bdf7cd0 CH |
454 | |
455 | if (tp->t_dblocks_delta) { | |
413d57c9 | 456 | be64_add_cpu(&sbp->sb_dblocks, tp->t_dblocks_delta); |
1da177e4 LT |
457 | whole = 1; |
458 | } | |
2bdf7cd0 | 459 | if (tp->t_agcount_delta) { |
413d57c9 | 460 | be32_add_cpu(&sbp->sb_agcount, tp->t_agcount_delta); |
1da177e4 LT |
461 | whole = 1; |
462 | } | |
2bdf7cd0 CH |
463 | if (tp->t_imaxpct_delta) { |
464 | sbp->sb_imax_pct += tp->t_imaxpct_delta; | |
1da177e4 LT |
465 | whole = 1; |
466 | } | |
2bdf7cd0 | 467 | if (tp->t_rextsize_delta) { |
413d57c9 | 468 | be32_add_cpu(&sbp->sb_rextsize, tp->t_rextsize_delta); |
1da177e4 LT |
469 | whole = 1; |
470 | } | |
2bdf7cd0 | 471 | if (tp->t_rbmblocks_delta) { |
413d57c9 | 472 | be32_add_cpu(&sbp->sb_rbmblocks, tp->t_rbmblocks_delta); |
1da177e4 LT |
473 | whole = 1; |
474 | } | |
2bdf7cd0 | 475 | if (tp->t_rblocks_delta) { |
413d57c9 | 476 | be64_add_cpu(&sbp->sb_rblocks, tp->t_rblocks_delta); |
1da177e4 LT |
477 | whole = 1; |
478 | } | |
2bdf7cd0 | 479 | if (tp->t_rextents_delta) { |
413d57c9 | 480 | be64_add_cpu(&sbp->sb_rextents, tp->t_rextents_delta); |
1da177e4 LT |
481 | whole = 1; |
482 | } | |
2bdf7cd0 CH |
483 | if (tp->t_rextslog_delta) { |
484 | sbp->sb_rextslog += tp->t_rextslog_delta; | |
1da177e4 LT |
485 | whole = 1; |
486 | } | |
487 | ||
488 | if (whole) | |
489 | /* | |
c41564b5 | 490 | * Log the whole thing, the fields are noncontiguous. |
1da177e4 | 491 | */ |
2bdf7cd0 | 492 | xfs_trans_log_buf(tp, bp, 0, sizeof(xfs_dsb_t) - 1); |
1da177e4 LT |
493 | else |
494 | /* | |
495 | * Since all the modifiable fields are contiguous, we | |
496 | * can get away with this. | |
497 | */ | |
2bdf7cd0 CH |
498 | xfs_trans_log_buf(tp, bp, offsetof(xfs_dsb_t, sb_icount), |
499 | offsetof(xfs_dsb_t, sb_frextents) + | |
1da177e4 | 500 | sizeof(sbp->sb_frextents) - 1); |
1da177e4 LT |
501 | } |
502 | ||
503 | /* | |
45c34141 DC |
504 | * xfs_trans_unreserve_and_mod_sb() is called to release unused reservations |
505 | * and apply superblock counter changes to the in-core superblock. The | |
506 | * t_res_fdblocks_delta and t_res_frextents_delta fields are explicitly NOT | |
507 | * applied to the in-core superblock. The idea is that that has already been | |
508 | * done. | |
1da177e4 LT |
509 | * |
510 | * This is done efficiently with a single call to xfs_mod_incore_sb_batch(). | |
45c34141 DC |
511 | * However, we have to ensure that we only modify each superblock field only |
512 | * once because the application of the delta values may not be atomic. That can | |
513 | * lead to ENOSPC races occurring if we have two separate modifcations of the | |
514 | * free space counter to put back the entire reservation and then take away | |
515 | * what we used. | |
516 | * | |
517 | * If we are not logging superblock counters, then the inode allocated/free and | |
518 | * used block counts are not updated in the on disk superblock. In this case, | |
519 | * XFS_TRANS_SB_DIRTY will not be set when the transaction is updated but we | |
520 | * still need to update the incore superblock with the changes. | |
1da177e4 | 521 | */ |
71e330b5 | 522 | void |
1da177e4 LT |
523 | xfs_trans_unreserve_and_mod_sb( |
524 | xfs_trans_t *tp) | |
525 | { | |
1b040712 | 526 | xfs_mod_sb_t msb[9]; /* If you add cases, add entries */ |
1da177e4 | 527 | xfs_mod_sb_t *msbp; |
92821e2b | 528 | xfs_mount_t *mp = tp->t_mountp; |
1da177e4 LT |
529 | /* REFERENCED */ |
530 | int error; | |
531 | int rsvd; | |
45c34141 DC |
532 | int64_t blkdelta = 0; |
533 | int64_t rtxdelta = 0; | |
1b040712 CH |
534 | int64_t idelta = 0; |
535 | int64_t ifreedelta = 0; | |
1da177e4 LT |
536 | |
537 | msbp = msb; | |
538 | rsvd = (tp->t_flags & XFS_TRANS_RESERVE) != 0; | |
539 | ||
1b040712 | 540 | /* calculate deltas */ |
45c34141 DC |
541 | if (tp->t_blk_res > 0) |
542 | blkdelta = tp->t_blk_res; | |
45c34141 DC |
543 | if ((tp->t_fdblocks_delta != 0) && |
544 | (xfs_sb_version_haslazysbcount(&mp->m_sb) || | |
545 | (tp->t_flags & XFS_TRANS_SB_DIRTY))) | |
546 | blkdelta += tp->t_fdblocks_delta; | |
547 | ||
45c34141 DC |
548 | if (tp->t_rtx_res > 0) |
549 | rtxdelta = tp->t_rtx_res; | |
45c34141 DC |
550 | if ((tp->t_frextents_delta != 0) && |
551 | (tp->t_flags & XFS_TRANS_SB_DIRTY)) | |
552 | rtxdelta += tp->t_frextents_delta; | |
553 | ||
1b040712 CH |
554 | if (xfs_sb_version_haslazysbcount(&mp->m_sb) || |
555 | (tp->t_flags & XFS_TRANS_SB_DIRTY)) { | |
556 | idelta = tp->t_icount_delta; | |
557 | ifreedelta = tp->t_ifree_delta; | |
558 | } | |
559 | ||
560 | /* apply the per-cpu counters */ | |
561 | if (blkdelta) { | |
562 | error = xfs_icsb_modify_counters(mp, XFS_SBS_FDBLOCKS, | |
563 | blkdelta, rsvd); | |
564 | if (error) | |
565 | goto out; | |
566 | } | |
567 | ||
568 | if (idelta) { | |
569 | error = xfs_icsb_modify_counters(mp, XFS_SBS_ICOUNT, | |
570 | idelta, rsvd); | |
571 | if (error) | |
572 | goto out_undo_fdblocks; | |
573 | } | |
574 | ||
575 | if (ifreedelta) { | |
576 | error = xfs_icsb_modify_counters(mp, XFS_SBS_IFREE, | |
577 | ifreedelta, rsvd); | |
578 | if (error) | |
579 | goto out_undo_icount; | |
580 | } | |
581 | ||
582 | /* apply remaining deltas */ | |
45c34141 | 583 | if (rtxdelta != 0) { |
1da177e4 | 584 | msbp->msb_field = XFS_SBS_FREXTENTS; |
45c34141 | 585 | msbp->msb_delta = rtxdelta; |
1da177e4 LT |
586 | msbp++; |
587 | } | |
588 | ||
92821e2b | 589 | if (tp->t_flags & XFS_TRANS_SB_DIRTY) { |
1da177e4 LT |
590 | if (tp->t_dblocks_delta != 0) { |
591 | msbp->msb_field = XFS_SBS_DBLOCKS; | |
20f4ebf2 | 592 | msbp->msb_delta = tp->t_dblocks_delta; |
1da177e4 LT |
593 | msbp++; |
594 | } | |
595 | if (tp->t_agcount_delta != 0) { | |
596 | msbp->msb_field = XFS_SBS_AGCOUNT; | |
20f4ebf2 | 597 | msbp->msb_delta = tp->t_agcount_delta; |
1da177e4 LT |
598 | msbp++; |
599 | } | |
600 | if (tp->t_imaxpct_delta != 0) { | |
601 | msbp->msb_field = XFS_SBS_IMAX_PCT; | |
20f4ebf2 | 602 | msbp->msb_delta = tp->t_imaxpct_delta; |
1da177e4 LT |
603 | msbp++; |
604 | } | |
605 | if (tp->t_rextsize_delta != 0) { | |
606 | msbp->msb_field = XFS_SBS_REXTSIZE; | |
20f4ebf2 | 607 | msbp->msb_delta = tp->t_rextsize_delta; |
1da177e4 LT |
608 | msbp++; |
609 | } | |
610 | if (tp->t_rbmblocks_delta != 0) { | |
611 | msbp->msb_field = XFS_SBS_RBMBLOCKS; | |
20f4ebf2 | 612 | msbp->msb_delta = tp->t_rbmblocks_delta; |
1da177e4 LT |
613 | msbp++; |
614 | } | |
615 | if (tp->t_rblocks_delta != 0) { | |
616 | msbp->msb_field = XFS_SBS_RBLOCKS; | |
20f4ebf2 | 617 | msbp->msb_delta = tp->t_rblocks_delta; |
1da177e4 LT |
618 | msbp++; |
619 | } | |
620 | if (tp->t_rextents_delta != 0) { | |
621 | msbp->msb_field = XFS_SBS_REXTENTS; | |
20f4ebf2 | 622 | msbp->msb_delta = tp->t_rextents_delta; |
1da177e4 LT |
623 | msbp++; |
624 | } | |
625 | if (tp->t_rextslog_delta != 0) { | |
626 | msbp->msb_field = XFS_SBS_REXTSLOG; | |
20f4ebf2 | 627 | msbp->msb_delta = tp->t_rextslog_delta; |
1da177e4 LT |
628 | msbp++; |
629 | } | |
630 | } | |
631 | ||
632 | /* | |
633 | * If we need to change anything, do it. | |
634 | */ | |
635 | if (msbp > msb) { | |
636 | error = xfs_mod_incore_sb_batch(tp->t_mountp, msb, | |
637 | (uint)(msbp - msb), rsvd); | |
1b040712 CH |
638 | if (error) |
639 | goto out_undo_ifreecount; | |
1da177e4 | 640 | } |
1b040712 CH |
641 | |
642 | return; | |
643 | ||
644 | out_undo_ifreecount: | |
645 | if (ifreedelta) | |
646 | xfs_icsb_modify_counters(mp, XFS_SBS_IFREE, -ifreedelta, rsvd); | |
647 | out_undo_icount: | |
648 | if (idelta) | |
649 | xfs_icsb_modify_counters(mp, XFS_SBS_ICOUNT, -idelta, rsvd); | |
650 | out_undo_fdblocks: | |
651 | if (blkdelta) | |
652 | xfs_icsb_modify_counters(mp, XFS_SBS_FDBLOCKS, -blkdelta, rsvd); | |
653 | out: | |
1884bd83 | 654 | ASSERT(error == 0); |
1b040712 | 655 | return; |
1da177e4 LT |
656 | } |
657 | ||
e98c414f CH |
658 | /* |
659 | * Add the given log item to the transaction's list of log items. | |
660 | * | |
661 | * The log item will now point to its new descriptor with its li_desc field. | |
662 | */ | |
663 | void | |
664 | xfs_trans_add_item( | |
665 | struct xfs_trans *tp, | |
666 | struct xfs_log_item *lip) | |
667 | { | |
668 | struct xfs_log_item_desc *lidp; | |
669 | ||
f65020a8 JJ |
670 | ASSERT(lip->li_mountp == tp->t_mountp); |
671 | ASSERT(lip->li_ailp == tp->t_mountp->m_ail); | |
e98c414f | 672 | |
43869706 | 673 | lidp = kmem_zone_zalloc(xfs_log_item_desc_zone, KM_SLEEP | KM_NOFS); |
e98c414f CH |
674 | |
675 | lidp->lid_item = lip; | |
676 | lidp->lid_flags = 0; | |
e98c414f CH |
677 | list_add_tail(&lidp->lid_trans, &tp->t_items); |
678 | ||
679 | lip->li_desc = lidp; | |
680 | } | |
681 | ||
682 | STATIC void | |
683 | xfs_trans_free_item_desc( | |
684 | struct xfs_log_item_desc *lidp) | |
685 | { | |
686 | list_del_init(&lidp->lid_trans); | |
687 | kmem_zone_free(xfs_log_item_desc_zone, lidp); | |
688 | } | |
689 | ||
690 | /* | |
691 | * Unlink and free the given descriptor. | |
692 | */ | |
693 | void | |
694 | xfs_trans_del_item( | |
695 | struct xfs_log_item *lip) | |
696 | { | |
697 | xfs_trans_free_item_desc(lip->li_desc); | |
698 | lip->li_desc = NULL; | |
699 | } | |
700 | ||
701 | /* | |
702 | * Unlock all of the items of a transaction and free all the descriptors | |
703 | * of that transaction. | |
704 | */ | |
d17c701c | 705 | void |
e98c414f CH |
706 | xfs_trans_free_items( |
707 | struct xfs_trans *tp, | |
708 | xfs_lsn_t commit_lsn, | |
709 | int flags) | |
710 | { | |
711 | struct xfs_log_item_desc *lidp, *next; | |
712 | ||
713 | list_for_each_entry_safe(lidp, next, &tp->t_items, lid_trans) { | |
714 | struct xfs_log_item *lip = lidp->lid_item; | |
715 | ||
716 | lip->li_desc = NULL; | |
717 | ||
718 | if (commit_lsn != NULLCOMMITLSN) | |
719 | IOP_COMMITTING(lip, commit_lsn); | |
720 | if (flags & XFS_TRANS_ABORT) | |
721 | lip->li_flags |= XFS_LI_ABORTED; | |
722 | IOP_UNLOCK(lip); | |
723 | ||
724 | xfs_trans_free_item_desc(lidp); | |
725 | } | |
726 | } | |
727 | ||
0e57f6a3 DC |
728 | static inline void |
729 | xfs_log_item_batch_insert( | |
730 | struct xfs_ail *ailp, | |
1d8c95a3 | 731 | struct xfs_ail_cursor *cur, |
0e57f6a3 DC |
732 | struct xfs_log_item **log_items, |
733 | int nr_items, | |
734 | xfs_lsn_t commit_lsn) | |
735 | { | |
736 | int i; | |
737 | ||
738 | spin_lock(&ailp->xa_lock); | |
739 | /* xfs_trans_ail_update_bulk drops ailp->xa_lock */ | |
1d8c95a3 | 740 | xfs_trans_ail_update_bulk(ailp, cur, log_items, nr_items, commit_lsn); |
0e57f6a3 DC |
741 | |
742 | for (i = 0; i < nr_items; i++) | |
743 | IOP_UNPIN(log_items[i], 0); | |
744 | } | |
745 | ||
746 | /* | |
747 | * Bulk operation version of xfs_trans_committed that takes a log vector of | |
748 | * items to insert into the AIL. This uses bulk AIL insertion techniques to | |
749 | * minimise lock traffic. | |
e34a314c DC |
750 | * |
751 | * If we are called with the aborted flag set, it is because a log write during | |
752 | * a CIL checkpoint commit has failed. In this case, all the items in the | |
753 | * checkpoint have already gone through IOP_COMMITED and IOP_UNLOCK, which | |
754 | * means that checkpoint commit abort handling is treated exactly the same | |
755 | * as an iclog write error even though we haven't started any IO yet. Hence in | |
756 | * this case all we need to do is IOP_COMMITTED processing, followed by an | |
757 | * IOP_UNPIN(aborted) call. | |
1d8c95a3 DC |
758 | * |
759 | * The AIL cursor is used to optimise the insert process. If commit_lsn is not | |
760 | * at the end of the AIL, the insert cursor avoids the need to walk | |
761 | * the AIL to find the insertion point on every xfs_log_item_batch_insert() | |
762 | * call. This saves a lot of needless list walking and is a net win, even | |
763 | * though it slightly increases that amount of AIL lock traffic to set it up | |
764 | * and tear it down. | |
0e57f6a3 DC |
765 | */ |
766 | void | |
767 | xfs_trans_committed_bulk( | |
768 | struct xfs_ail *ailp, | |
769 | struct xfs_log_vec *log_vector, | |
770 | xfs_lsn_t commit_lsn, | |
771 | int aborted) | |
772 | { | |
773 | #define LOG_ITEM_BATCH_SIZE 32 | |
774 | struct xfs_log_item *log_items[LOG_ITEM_BATCH_SIZE]; | |
775 | struct xfs_log_vec *lv; | |
1d8c95a3 | 776 | struct xfs_ail_cursor cur; |
0e57f6a3 DC |
777 | int i = 0; |
778 | ||
1d8c95a3 DC |
779 | spin_lock(&ailp->xa_lock); |
780 | xfs_trans_ail_cursor_last(ailp, &cur, commit_lsn); | |
781 | spin_unlock(&ailp->xa_lock); | |
782 | ||
0e57f6a3 DC |
783 | /* unpin all the log items */ |
784 | for (lv = log_vector; lv; lv = lv->lv_next ) { | |
785 | struct xfs_log_item *lip = lv->lv_item; | |
786 | xfs_lsn_t item_lsn; | |
787 | ||
788 | if (aborted) | |
789 | lip->li_flags |= XFS_LI_ABORTED; | |
790 | item_lsn = IOP_COMMITTED(lip, commit_lsn); | |
791 | ||
1316d4da | 792 | /* item_lsn of -1 means the item needs no further processing */ |
0e57f6a3 DC |
793 | if (XFS_LSN_CMP(item_lsn, (xfs_lsn_t)-1) == 0) |
794 | continue; | |
795 | ||
e34a314c DC |
796 | /* |
797 | * if we are aborting the operation, no point in inserting the | |
798 | * object into the AIL as we are in a shutdown situation. | |
799 | */ | |
800 | if (aborted) { | |
801 | ASSERT(XFS_FORCED_SHUTDOWN(ailp->xa_mount)); | |
802 | IOP_UNPIN(lip, 1); | |
803 | continue; | |
804 | } | |
805 | ||
0e57f6a3 DC |
806 | if (item_lsn != commit_lsn) { |
807 | ||
808 | /* | |
809 | * Not a bulk update option due to unusual item_lsn. | |
810 | * Push into AIL immediately, rechecking the lsn once | |
1d8c95a3 DC |
811 | * we have the ail lock. Then unpin the item. This does |
812 | * not affect the AIL cursor the bulk insert path is | |
813 | * using. | |
0e57f6a3 DC |
814 | */ |
815 | spin_lock(&ailp->xa_lock); | |
816 | if (XFS_LSN_CMP(item_lsn, lip->li_lsn) > 0) | |
817 | xfs_trans_ail_update(ailp, lip, item_lsn); | |
818 | else | |
819 | spin_unlock(&ailp->xa_lock); | |
820 | IOP_UNPIN(lip, 0); | |
821 | continue; | |
822 | } | |
823 | ||
824 | /* Item is a candidate for bulk AIL insert. */ | |
825 | log_items[i++] = lv->lv_item; | |
826 | if (i >= LOG_ITEM_BATCH_SIZE) { | |
1d8c95a3 | 827 | xfs_log_item_batch_insert(ailp, &cur, log_items, |
0e57f6a3 DC |
828 | LOG_ITEM_BATCH_SIZE, commit_lsn); |
829 | i = 0; | |
830 | } | |
831 | } | |
832 | ||
833 | /* make sure we insert the remainder! */ | |
834 | if (i) | |
1d8c95a3 DC |
835 | xfs_log_item_batch_insert(ailp, &cur, log_items, i, commit_lsn); |
836 | ||
837 | spin_lock(&ailp->xa_lock); | |
838 | xfs_trans_ail_cursor_done(ailp, &cur); | |
839 | spin_unlock(&ailp->xa_lock); | |
0e57f6a3 DC |
840 | } |
841 | ||
0924378a | 842 | /* |
b1037058 | 843 | * Commit the given transaction to the log. |
0924378a DC |
844 | * |
845 | * XFS disk error handling mechanism is not based on a typical | |
846 | * transaction abort mechanism. Logically after the filesystem | |
847 | * gets marked 'SHUTDOWN', we can't let any new transactions | |
848 | * be durable - ie. committed to disk - because some metadata might | |
849 | * be inconsistent. In such cases, this returns an error, and the | |
850 | * caller may assume that all locked objects joined to the transaction | |
851 | * have already been unlocked as if the commit had succeeded. | |
852 | * Do not reference the transaction structure after this call. | |
853 | */ | |
0924378a | 854 | int |
b1037058 | 855 | xfs_trans_commit( |
a3ccd2ca | 856 | struct xfs_trans *tp, |
b1037058 | 857 | uint flags) |
0924378a | 858 | { |
a3ccd2ca | 859 | struct xfs_mount *mp = tp->t_mountp; |
0924378a | 860 | xfs_lsn_t commit_lsn = -1; |
a3ccd2ca | 861 | int error = 0; |
0924378a DC |
862 | int log_flags = 0; |
863 | int sync = tp->t_flags & XFS_TRANS_SYNC; | |
0924378a DC |
864 | |
865 | /* | |
866 | * Determine whether this commit is releasing a permanent | |
867 | * log reservation or not. | |
868 | */ | |
869 | if (flags & XFS_TRANS_RELEASE_LOG_RES) { | |
870 | ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES); | |
871 | log_flags = XFS_LOG_REL_PERM_RESERV; | |
872 | } | |
873 | ||
874 | /* | |
875 | * If there is nothing to be logged by the transaction, | |
876 | * then unlock all of the items associated with the | |
877 | * transaction and free the transaction structure. | |
878 | * Also make sure to return any reserved blocks to | |
879 | * the free pool. | |
880 | */ | |
a3ccd2ca CH |
881 | if (!(tp->t_flags & XFS_TRANS_DIRTY)) |
882 | goto out_unreserve; | |
883 | ||
884 | if (XFS_FORCED_SHUTDOWN(mp)) { | |
885 | error = XFS_ERROR(EIO); | |
886 | goto out_unreserve; | |
0924378a | 887 | } |
a3ccd2ca | 888 | |
0924378a DC |
889 | ASSERT(tp->t_ticket != NULL); |
890 | ||
891 | /* | |
892 | * If we need to update the superblock, then do it now. | |
893 | */ | |
894 | if (tp->t_flags & XFS_TRANS_SB_DIRTY) | |
895 | xfs_trans_apply_sb_deltas(tp); | |
896 | xfs_trans_apply_dquot_deltas(tp); | |
897 | ||
0244b960 | 898 | error = xfs_log_commit_cil(mp, tp, &commit_lsn, flags); |
0924378a DC |
899 | if (error == ENOMEM) { |
900 | xfs_force_shutdown(mp, SHUTDOWN_LOG_IO_ERROR); | |
a3ccd2ca CH |
901 | error = XFS_ERROR(EIO); |
902 | goto out_unreserve; | |
0924378a | 903 | } |
1da177e4 | 904 | |
0244b960 CH |
905 | current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); |
906 | xfs_trans_free(tp); | |
907 | ||
1da177e4 LT |
908 | /* |
909 | * If the transaction needs to be synchronous, then force the | |
910 | * log out now and wait for it. | |
911 | */ | |
912 | if (sync) { | |
f538d4da | 913 | if (!error) { |
a14a348b | 914 | error = _xfs_log_force_lsn(mp, commit_lsn, |
b1037058 | 915 | XFS_LOG_SYNC, NULL); |
f538d4da | 916 | } |
1da177e4 LT |
917 | XFS_STATS_INC(xs_trans_sync); |
918 | } else { | |
919 | XFS_STATS_INC(xs_trans_async); | |
920 | } | |
921 | ||
a3ccd2ca CH |
922 | return error; |
923 | ||
924 | out_unreserve: | |
925 | xfs_trans_unreserve_and_mod_sb(tp); | |
926 | ||
927 | /* | |
928 | * It is indeed possible for the transaction to be not dirty but | |
929 | * the dqinfo portion to be. All that means is that we have some | |
930 | * (non-persistent) quota reservations that need to be unreserved. | |
931 | */ | |
932 | xfs_trans_unreserve_and_mod_dquots(tp); | |
933 | if (tp->t_ticket) { | |
934 | commit_lsn = xfs_log_done(mp, tp->t_ticket, NULL, log_flags); | |
935 | if (commit_lsn == -1 && !error) | |
936 | error = XFS_ERROR(EIO); | |
937 | } | |
938 | current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); | |
71e330b5 | 939 | xfs_trans_free_items(tp, NULLCOMMITLSN, error ? XFS_TRANS_ABORT : 0); |
a3ccd2ca CH |
940 | xfs_trans_free(tp); |
941 | ||
942 | XFS_STATS_INC(xs_trans_empty); | |
943 | return error; | |
1da177e4 LT |
944 | } |
945 | ||
1da177e4 LT |
946 | /* |
947 | * Unlock all of the transaction's items and free the transaction. | |
948 | * The transaction must not have modified any of its items, because | |
949 | * there is no way to restore them to their previous state. | |
950 | * | |
951 | * If the transaction has made a log reservation, make sure to release | |
952 | * it as well. | |
953 | */ | |
954 | void | |
955 | xfs_trans_cancel( | |
956 | xfs_trans_t *tp, | |
957 | int flags) | |
958 | { | |
959 | int log_flags; | |
0733af21 | 960 | xfs_mount_t *mp = tp->t_mountp; |
1da177e4 LT |
961 | |
962 | /* | |
963 | * See if the caller is being too lazy to figure out if | |
964 | * the transaction really needs an abort. | |
965 | */ | |
966 | if ((flags & XFS_TRANS_ABORT) && !(tp->t_flags & XFS_TRANS_DIRTY)) | |
967 | flags &= ~XFS_TRANS_ABORT; | |
968 | /* | |
969 | * See if the caller is relying on us to shut down the | |
970 | * filesystem. This happens in paths where we detect | |
971 | * corruption and decide to give up. | |
972 | */ | |
60a204f0 | 973 | if ((tp->t_flags & XFS_TRANS_DIRTY) && !XFS_FORCED_SHUTDOWN(mp)) { |
0733af21 | 974 | XFS_ERROR_REPORT("xfs_trans_cancel", XFS_ERRLEVEL_LOW, mp); |
7d04a335 | 975 | xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); |
60a204f0 | 976 | } |
1da177e4 | 977 | #ifdef DEBUG |
e98c414f CH |
978 | if (!(flags & XFS_TRANS_ABORT) && !XFS_FORCED_SHUTDOWN(mp)) { |
979 | struct xfs_log_item_desc *lidp; | |
980 | ||
981 | list_for_each_entry(lidp, &tp->t_items, lid_trans) | |
982 | ASSERT(!(lidp->lid_item->li_type == XFS_LI_EFD)); | |
1da177e4 LT |
983 | } |
984 | #endif | |
985 | xfs_trans_unreserve_and_mod_sb(tp); | |
7d095257 | 986 | xfs_trans_unreserve_and_mod_dquots(tp); |
1da177e4 LT |
987 | |
988 | if (tp->t_ticket) { | |
989 | if (flags & XFS_TRANS_RELEASE_LOG_RES) { | |
990 | ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES); | |
991 | log_flags = XFS_LOG_REL_PERM_RESERV; | |
992 | } else { | |
993 | log_flags = 0; | |
994 | } | |
0733af21 | 995 | xfs_log_done(mp, tp->t_ticket, NULL, log_flags); |
1da177e4 LT |
996 | } |
997 | ||
998 | /* mark this thread as no longer being in a transaction */ | |
59c1b082 | 999 | current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); |
1da177e4 | 1000 | |
71e330b5 | 1001 | xfs_trans_free_items(tp, NULLCOMMITLSN, flags); |
1da177e4 LT |
1002 | xfs_trans_free(tp); |
1003 | } | |
1004 | ||
322ff6b8 NS |
1005 | /* |
1006 | * Roll from one trans in the sequence of PERMANENT transactions to | |
1007 | * the next: permanent transactions are only flushed out when | |
1008 | * committed with XFS_TRANS_RELEASE_LOG_RES, but we still want as soon | |
1009 | * as possible to let chunks of it go to the log. So we commit the | |
1010 | * chunk we've been working on and get a new transaction to continue. | |
1011 | */ | |
1012 | int | |
1013 | xfs_trans_roll( | |
1014 | struct xfs_trans **tpp, | |
1015 | struct xfs_inode *dp) | |
1016 | { | |
1017 | struct xfs_trans *trans; | |
3d3c8b52 | 1018 | struct xfs_trans_res tres; |
322ff6b8 NS |
1019 | int error; |
1020 | ||
1021 | /* | |
1022 | * Ensure that the inode is always logged. | |
1023 | */ | |
1024 | trans = *tpp; | |
1025 | xfs_trans_log_inode(trans, dp, XFS_ILOG_CORE); | |
1026 | ||
1027 | /* | |
1028 | * Copy the critical parameters from one trans to the next. | |
1029 | */ | |
3d3c8b52 JL |
1030 | tres.tr_logres = trans->t_log_res; |
1031 | tres.tr_logcount = trans->t_log_count; | |
322ff6b8 NS |
1032 | *tpp = xfs_trans_dup(trans); |
1033 | ||
1034 | /* | |
1035 | * Commit the current transaction. | |
1036 | * If this commit failed, then it'd just unlock those items that | |
1037 | * are not marked ihold. That also means that a filesystem shutdown | |
1038 | * is in progress. The caller takes the responsibility to cancel | |
1039 | * the duplicate transaction that gets returned. | |
1040 | */ | |
1041 | error = xfs_trans_commit(trans, 0); | |
1042 | if (error) | |
1043 | return (error); | |
1044 | ||
1045 | trans = *tpp; | |
1046 | ||
cc09c0dc DC |
1047 | /* |
1048 | * transaction commit worked ok so we can drop the extra ticket | |
1049 | * reference that we gained in xfs_trans_dup() | |
1050 | */ | |
1051 | xfs_log_ticket_put(trans->t_ticket); | |
1052 | ||
1053 | ||
322ff6b8 NS |
1054 | /* |
1055 | * Reserve space in the log for th next transaction. | |
1056 | * This also pushes items in the "AIL", the list of logged items, | |
1057 | * out to disk if they are taking up space at the tail of the log | |
1058 | * that we want to use. This requires that either nothing be locked | |
1059 | * across this call, or that anything that is locked be logged in | |
1060 | * the prior and the next transactions. | |
1061 | */ | |
3d3c8b52 JL |
1062 | tres.tr_logflags = XFS_TRANS_PERM_LOG_RES; |
1063 | error = xfs_trans_reserve(trans, &tres, 0, 0); | |
322ff6b8 NS |
1064 | /* |
1065 | * Ensure that the inode is in the new transaction and locked. | |
1066 | */ | |
1067 | if (error) | |
1068 | return error; | |
1069 | ||
ddc3415a | 1070 | xfs_trans_ijoin(trans, dp, 0); |
322ff6b8 NS |
1071 | return 0; |
1072 | } |