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ccd979bd MF |
1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * journal.c | |
5 | * | |
6 | * Defines functions of journalling api | |
7 | * | |
8 | * Copyright (C) 2003, 2004 Oracle. All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public | |
12 | * License as published by the Free Software Foundation; either | |
13 | * version 2 of the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public | |
21 | * License along with this program; if not, write to the | |
22 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | * Boston, MA 021110-1307, USA. | |
24 | */ | |
25 | ||
26 | #include <linux/fs.h> | |
27 | #include <linux/types.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/highmem.h> | |
30 | #include <linux/kthread.h> | |
31 | ||
32 | #define MLOG_MASK_PREFIX ML_JOURNAL | |
33 | #include <cluster/masklog.h> | |
34 | ||
35 | #include "ocfs2.h" | |
36 | ||
37 | #include "alloc.h" | |
38 | #include "dlmglue.h" | |
39 | #include "extent_map.h" | |
40 | #include "heartbeat.h" | |
41 | #include "inode.h" | |
42 | #include "journal.h" | |
43 | #include "localalloc.h" | |
44 | #include "namei.h" | |
45 | #include "slot_map.h" | |
46 | #include "super.h" | |
47 | #include "vote.h" | |
48 | #include "sysfile.h" | |
49 | ||
50 | #include "buffer_head_io.h" | |
51 | ||
34af946a | 52 | DEFINE_SPINLOCK(trans_inc_lock); |
ccd979bd MF |
53 | |
54 | static int ocfs2_force_read_journal(struct inode *inode); | |
55 | static int ocfs2_recover_node(struct ocfs2_super *osb, | |
56 | int node_num); | |
57 | static int __ocfs2_recovery_thread(void *arg); | |
58 | static int ocfs2_commit_cache(struct ocfs2_super *osb); | |
59 | static int ocfs2_wait_on_mount(struct ocfs2_super *osb); | |
60 | static void ocfs2_handle_cleanup_locks(struct ocfs2_journal *journal, | |
61 | struct ocfs2_journal_handle *handle); | |
62 | static void ocfs2_commit_unstarted_handle(struct ocfs2_journal_handle *handle); | |
63 | static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, | |
64 | int dirty); | |
65 | static int ocfs2_trylock_journal(struct ocfs2_super *osb, | |
66 | int slot_num); | |
67 | static int ocfs2_recover_orphans(struct ocfs2_super *osb, | |
68 | int slot); | |
69 | static int ocfs2_commit_thread(void *arg); | |
70 | ||
71 | static int ocfs2_commit_cache(struct ocfs2_super *osb) | |
72 | { | |
73 | int status = 0; | |
74 | unsigned int flushed; | |
75 | unsigned long old_id; | |
76 | struct ocfs2_journal *journal = NULL; | |
77 | ||
78 | mlog_entry_void(); | |
79 | ||
80 | journal = osb->journal; | |
81 | ||
82 | /* Flush all pending commits and checkpoint the journal. */ | |
83 | down_write(&journal->j_trans_barrier); | |
84 | ||
85 | if (atomic_read(&journal->j_num_trans) == 0) { | |
86 | up_write(&journal->j_trans_barrier); | |
87 | mlog(0, "No transactions for me to flush!\n"); | |
88 | goto finally; | |
89 | } | |
90 | ||
91 | journal_lock_updates(journal->j_journal); | |
92 | status = journal_flush(journal->j_journal); | |
93 | journal_unlock_updates(journal->j_journal); | |
94 | if (status < 0) { | |
95 | up_write(&journal->j_trans_barrier); | |
96 | mlog_errno(status); | |
97 | goto finally; | |
98 | } | |
99 | ||
100 | old_id = ocfs2_inc_trans_id(journal); | |
101 | ||
102 | flushed = atomic_read(&journal->j_num_trans); | |
103 | atomic_set(&journal->j_num_trans, 0); | |
104 | up_write(&journal->j_trans_barrier); | |
105 | ||
106 | mlog(0, "commit_thread: flushed transaction %lu (%u handles)\n", | |
107 | journal->j_trans_id, flushed); | |
108 | ||
109 | ocfs2_kick_vote_thread(osb); | |
110 | wake_up(&journal->j_checkpointed); | |
111 | finally: | |
112 | mlog_exit(status); | |
113 | return status; | |
114 | } | |
115 | ||
116 | struct ocfs2_journal_handle *ocfs2_alloc_handle(struct ocfs2_super *osb) | |
117 | { | |
118 | struct ocfs2_journal_handle *retval = NULL; | |
119 | ||
afae00ab | 120 | retval = kcalloc(1, sizeof(*retval), GFP_NOFS); |
ccd979bd MF |
121 | if (!retval) { |
122 | mlog(ML_ERROR, "Failed to allocate memory for journal " | |
123 | "handle!\n"); | |
124 | return NULL; | |
125 | } | |
126 | ||
ccd979bd MF |
127 | retval->num_locks = 0; |
128 | retval->k_handle = NULL; | |
129 | ||
130 | INIT_LIST_HEAD(&retval->locks); | |
131 | INIT_LIST_HEAD(&retval->inode_list); | |
132 | retval->journal = osb->journal; | |
133 | ||
134 | return retval; | |
135 | } | |
136 | ||
137 | /* pass it NULL and it will allocate a new handle object for you. If | |
138 | * you pass it a handle however, it may still return error, in which | |
139 | * case it has free'd the passed handle for you. */ | |
140 | struct ocfs2_journal_handle *ocfs2_start_trans(struct ocfs2_super *osb, | |
141 | struct ocfs2_journal_handle *handle, | |
142 | int max_buffs) | |
143 | { | |
144 | int ret; | |
145 | journal_t *journal = osb->journal->j_journal; | |
146 | ||
147 | mlog_entry("(max_buffs = %d)\n", max_buffs); | |
148 | ||
ebdec83b | 149 | BUG_ON(!osb || !osb->journal->j_journal); |
ccd979bd MF |
150 | |
151 | if (ocfs2_is_hard_readonly(osb)) { | |
152 | ret = -EROFS; | |
153 | goto done_free; | |
154 | } | |
155 | ||
156 | BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE); | |
157 | BUG_ON(max_buffs <= 0); | |
158 | ||
159 | /* JBD might support this, but our journalling code doesn't yet. */ | |
160 | if (journal_current_handle()) { | |
161 | mlog(ML_ERROR, "Recursive transaction attempted!\n"); | |
162 | BUG(); | |
163 | } | |
164 | ||
165 | if (!handle) | |
166 | handle = ocfs2_alloc_handle(osb); | |
167 | if (!handle) { | |
168 | ret = -ENOMEM; | |
169 | mlog(ML_ERROR, "Failed to allocate memory for journal " | |
170 | "handle!\n"); | |
171 | goto done_free; | |
172 | } | |
173 | ||
ccd979bd MF |
174 | down_read(&osb->journal->j_trans_barrier); |
175 | ||
176 | /* actually start the transaction now */ | |
177 | handle->k_handle = journal_start(journal, max_buffs); | |
178 | if (IS_ERR(handle->k_handle)) { | |
179 | up_read(&osb->journal->j_trans_barrier); | |
180 | ||
181 | ret = PTR_ERR(handle->k_handle); | |
182 | handle->k_handle = NULL; | |
183 | mlog_errno(ret); | |
184 | ||
185 | if (is_journal_aborted(journal)) { | |
186 | ocfs2_abort(osb->sb, "Detected aborted journal"); | |
187 | ret = -EROFS; | |
188 | } | |
189 | goto done_free; | |
190 | } | |
191 | ||
192 | atomic_inc(&(osb->journal->j_num_trans)); | |
193 | handle->flags |= OCFS2_HANDLE_STARTED; | |
194 | ||
195 | mlog_exit_ptr(handle); | |
196 | return handle; | |
197 | ||
198 | done_free: | |
199 | if (handle) | |
200 | ocfs2_commit_unstarted_handle(handle); /* will kfree handle */ | |
201 | ||
202 | mlog_exit(ret); | |
203 | return ERR_PTR(ret); | |
204 | } | |
205 | ||
206 | void ocfs2_handle_add_inode(struct ocfs2_journal_handle *handle, | |
207 | struct inode *inode) | |
208 | { | |
209 | BUG_ON(!handle); | |
210 | BUG_ON(!inode); | |
211 | ||
212 | atomic_inc(&inode->i_count); | |
213 | ||
214 | /* we're obviously changing it... */ | |
1b1dcc1b | 215 | mutex_lock(&inode->i_mutex); |
ccd979bd MF |
216 | |
217 | /* sanity check */ | |
218 | BUG_ON(OCFS2_I(inode)->ip_handle); | |
219 | BUG_ON(!list_empty(&OCFS2_I(inode)->ip_handle_list)); | |
220 | ||
221 | OCFS2_I(inode)->ip_handle = handle; | |
f116629d | 222 | list_move_tail(&(OCFS2_I(inode)->ip_handle_list), &(handle->inode_list)); |
ccd979bd MF |
223 | } |
224 | ||
225 | static void ocfs2_handle_unlock_inodes(struct ocfs2_journal_handle *handle) | |
226 | { | |
227 | struct list_head *p, *n; | |
228 | struct inode *inode; | |
229 | struct ocfs2_inode_info *oi; | |
230 | ||
231 | list_for_each_safe(p, n, &handle->inode_list) { | |
232 | oi = list_entry(p, struct ocfs2_inode_info, | |
233 | ip_handle_list); | |
234 | inode = &oi->vfs_inode; | |
235 | ||
236 | OCFS2_I(inode)->ip_handle = NULL; | |
237 | list_del_init(&OCFS2_I(inode)->ip_handle_list); | |
238 | ||
1b1dcc1b | 239 | mutex_unlock(&inode->i_mutex); |
ccd979bd MF |
240 | iput(inode); |
241 | } | |
242 | } | |
243 | ||
244 | /* This is trivial so we do it out of the main commit | |
245 | * paths. Beware, it can be called from start_trans too! */ | |
246 | static void ocfs2_commit_unstarted_handle(struct ocfs2_journal_handle *handle) | |
247 | { | |
248 | mlog_entry_void(); | |
249 | ||
250 | BUG_ON(handle->flags & OCFS2_HANDLE_STARTED); | |
251 | ||
252 | ocfs2_handle_unlock_inodes(handle); | |
253 | /* You are allowed to add journal locks before the transaction | |
254 | * has started. */ | |
255 | ocfs2_handle_cleanup_locks(handle->journal, handle); | |
256 | ||
257 | kfree(handle); | |
258 | ||
259 | mlog_exit_void(); | |
260 | } | |
261 | ||
262 | void ocfs2_commit_trans(struct ocfs2_journal_handle *handle) | |
263 | { | |
264 | handle_t *jbd_handle; | |
265 | int retval; | |
266 | struct ocfs2_journal *journal = handle->journal; | |
267 | ||
268 | mlog_entry_void(); | |
269 | ||
270 | BUG_ON(!handle); | |
271 | ||
272 | if (!(handle->flags & OCFS2_HANDLE_STARTED)) { | |
273 | ocfs2_commit_unstarted_handle(handle); | |
274 | mlog_exit_void(); | |
275 | return; | |
276 | } | |
277 | ||
278 | /* release inode semaphores we took during this transaction */ | |
279 | ocfs2_handle_unlock_inodes(handle); | |
280 | ||
281 | /* ocfs2_extend_trans may have had to call journal_restart | |
282 | * which will always commit the transaction, but may return | |
283 | * error for any number of reasons. If this is the case, we | |
284 | * clear k_handle as it's not valid any more. */ | |
285 | if (handle->k_handle) { | |
286 | jbd_handle = handle->k_handle; | |
287 | ||
288 | if (handle->flags & OCFS2_HANDLE_SYNC) | |
289 | jbd_handle->h_sync = 1; | |
290 | else | |
291 | jbd_handle->h_sync = 0; | |
292 | ||
293 | /* actually stop the transaction. if we've set h_sync, | |
294 | * it'll have been committed when we return */ | |
295 | retval = journal_stop(jbd_handle); | |
296 | if (retval < 0) { | |
297 | mlog_errno(retval); | |
298 | mlog(ML_ERROR, "Could not commit transaction\n"); | |
299 | BUG(); | |
300 | } | |
301 | ||
302 | handle->k_handle = NULL; /* it's been free'd in journal_stop */ | |
303 | } | |
304 | ||
305 | ocfs2_handle_cleanup_locks(journal, handle); | |
306 | ||
307 | up_read(&journal->j_trans_barrier); | |
308 | ||
309 | kfree(handle); | |
310 | mlog_exit_void(); | |
311 | } | |
312 | ||
313 | /* | |
314 | * 'nblocks' is what you want to add to the current | |
315 | * transaction. extend_trans will either extend the current handle by | |
316 | * nblocks, or commit it and start a new one with nblocks credits. | |
317 | * | |
318 | * WARNING: This will not release any semaphores or disk locks taken | |
319 | * during the transaction, so make sure they were taken *before* | |
320 | * start_trans or we'll have ordering deadlocks. | |
321 | * | |
322 | * WARNING2: Note that we do *not* drop j_trans_barrier here. This is | |
323 | * good because transaction ids haven't yet been recorded on the | |
324 | * cluster locks associated with this handle. | |
325 | */ | |
326 | int ocfs2_extend_trans(struct ocfs2_journal_handle *handle, | |
327 | int nblocks) | |
328 | { | |
329 | int status; | |
330 | ||
331 | BUG_ON(!handle); | |
332 | BUG_ON(!(handle->flags & OCFS2_HANDLE_STARTED)); | |
333 | BUG_ON(!nblocks); | |
334 | ||
335 | mlog_entry_void(); | |
336 | ||
337 | mlog(0, "Trying to extend transaction by %d blocks\n", nblocks); | |
338 | ||
339 | status = journal_extend(handle->k_handle, nblocks); | |
340 | if (status < 0) { | |
341 | mlog_errno(status); | |
342 | goto bail; | |
343 | } | |
344 | ||
345 | if (status > 0) { | |
346 | mlog(0, "journal_extend failed, trying journal_restart\n"); | |
347 | status = journal_restart(handle->k_handle, nblocks); | |
348 | if (status < 0) { | |
349 | handle->k_handle = NULL; | |
350 | mlog_errno(status); | |
351 | goto bail; | |
352 | } | |
01ddf1e1 | 353 | } |
ccd979bd MF |
354 | |
355 | status = 0; | |
356 | bail: | |
357 | ||
358 | mlog_exit(status); | |
359 | return status; | |
360 | } | |
361 | ||
362 | int ocfs2_journal_access(struct ocfs2_journal_handle *handle, | |
363 | struct inode *inode, | |
364 | struct buffer_head *bh, | |
365 | int type) | |
366 | { | |
367 | int status; | |
368 | ||
369 | BUG_ON(!inode); | |
370 | BUG_ON(!handle); | |
371 | BUG_ON(!bh); | |
372 | BUG_ON(!(handle->flags & OCFS2_HANDLE_STARTED)); | |
373 | ||
205f87f6 | 374 | mlog_entry("bh->b_blocknr=%llu, type=%d (\"%s\"), bh->b_size = %zu\n", |
ccd979bd MF |
375 | (unsigned long long)bh->b_blocknr, type, |
376 | (type == OCFS2_JOURNAL_ACCESS_CREATE) ? | |
377 | "OCFS2_JOURNAL_ACCESS_CREATE" : | |
378 | "OCFS2_JOURNAL_ACCESS_WRITE", | |
379 | bh->b_size); | |
380 | ||
381 | /* we can safely remove this assertion after testing. */ | |
382 | if (!buffer_uptodate(bh)) { | |
383 | mlog(ML_ERROR, "giving me a buffer that's not uptodate!\n"); | |
384 | mlog(ML_ERROR, "b_blocknr=%llu\n", | |
385 | (unsigned long long)bh->b_blocknr); | |
386 | BUG(); | |
387 | } | |
388 | ||
389 | /* Set the current transaction information on the inode so | |
390 | * that the locking code knows whether it can drop it's locks | |
391 | * on this inode or not. We're protected from the commit | |
392 | * thread updating the current transaction id until | |
393 | * ocfs2_commit_trans() because ocfs2_start_trans() took | |
394 | * j_trans_barrier for us. */ | |
395 | ocfs2_set_inode_lock_trans(OCFS2_SB(inode->i_sb)->journal, inode); | |
396 | ||
251b6ecc | 397 | mutex_lock(&OCFS2_I(inode)->ip_io_mutex); |
ccd979bd MF |
398 | switch (type) { |
399 | case OCFS2_JOURNAL_ACCESS_CREATE: | |
400 | case OCFS2_JOURNAL_ACCESS_WRITE: | |
401 | status = journal_get_write_access(handle->k_handle, bh); | |
402 | break; | |
403 | ||
404 | case OCFS2_JOURNAL_ACCESS_UNDO: | |
405 | status = journal_get_undo_access(handle->k_handle, bh); | |
406 | break; | |
407 | ||
408 | default: | |
409 | status = -EINVAL; | |
410 | mlog(ML_ERROR, "Uknown access type!\n"); | |
411 | } | |
251b6ecc | 412 | mutex_unlock(&OCFS2_I(inode)->ip_io_mutex); |
ccd979bd MF |
413 | |
414 | if (status < 0) | |
415 | mlog(ML_ERROR, "Error %d getting %d access to buffer!\n", | |
416 | status, type); | |
417 | ||
418 | mlog_exit(status); | |
419 | return status; | |
420 | } | |
421 | ||
422 | int ocfs2_journal_dirty(struct ocfs2_journal_handle *handle, | |
423 | struct buffer_head *bh) | |
424 | { | |
425 | int status; | |
426 | ||
427 | BUG_ON(!(handle->flags & OCFS2_HANDLE_STARTED)); | |
428 | ||
429 | mlog_entry("(bh->b_blocknr=%llu)\n", | |
430 | (unsigned long long)bh->b_blocknr); | |
431 | ||
432 | status = journal_dirty_metadata(handle->k_handle, bh); | |
433 | if (status < 0) | |
434 | mlog(ML_ERROR, "Could not dirty metadata buffer. " | |
435 | "(bh->b_blocknr=%llu)\n", | |
436 | (unsigned long long)bh->b_blocknr); | |
437 | ||
438 | mlog_exit(status); | |
439 | return status; | |
440 | } | |
441 | ||
442 | int ocfs2_journal_dirty_data(handle_t *handle, | |
443 | struct buffer_head *bh) | |
444 | { | |
445 | int err = journal_dirty_data(handle, bh); | |
446 | if (err) | |
447 | mlog_errno(err); | |
448 | /* TODO: When we can handle it, abort the handle and go RO on | |
449 | * error here. */ | |
450 | ||
451 | return err; | |
452 | } | |
453 | ||
454 | /* We always assume you're adding a metadata lock at level 'ex' */ | |
455 | int ocfs2_handle_add_lock(struct ocfs2_journal_handle *handle, | |
456 | struct inode *inode) | |
457 | { | |
458 | int status; | |
459 | struct ocfs2_journal_lock *lock; | |
460 | ||
461 | BUG_ON(!inode); | |
462 | ||
463 | lock = kmem_cache_alloc(ocfs2_lock_cache, GFP_NOFS); | |
464 | if (!lock) { | |
465 | status = -ENOMEM; | |
466 | mlog_errno(-ENOMEM); | |
467 | goto bail; | |
468 | } | |
469 | ||
470 | if (!igrab(inode)) | |
471 | BUG(); | |
472 | lock->jl_inode = inode; | |
473 | ||
474 | list_add_tail(&(lock->jl_lock_list), &(handle->locks)); | |
475 | handle->num_locks++; | |
476 | ||
477 | status = 0; | |
478 | bail: | |
479 | mlog_exit(status); | |
480 | return status; | |
481 | } | |
482 | ||
483 | static void ocfs2_handle_cleanup_locks(struct ocfs2_journal *journal, | |
484 | struct ocfs2_journal_handle *handle) | |
485 | { | |
486 | struct list_head *p, *n; | |
487 | struct ocfs2_journal_lock *lock; | |
488 | struct inode *inode; | |
489 | ||
490 | list_for_each_safe(p, n, &(handle->locks)) { | |
491 | lock = list_entry(p, struct ocfs2_journal_lock, | |
492 | jl_lock_list); | |
493 | list_del(&lock->jl_lock_list); | |
494 | handle->num_locks--; | |
495 | ||
496 | inode = lock->jl_inode; | |
497 | ocfs2_meta_unlock(inode, 1); | |
498 | if (atomic_read(&inode->i_count) == 1) | |
499 | mlog(ML_ERROR, | |
b0697053 MF |
500 | "Inode %llu, I'm doing a last iput for!", |
501 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd MF |
502 | iput(inode); |
503 | kmem_cache_free(ocfs2_lock_cache, lock); | |
504 | } | |
505 | } | |
506 | ||
507 | #define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * 5) | |
508 | ||
509 | void ocfs2_set_journal_params(struct ocfs2_super *osb) | |
510 | { | |
511 | journal_t *journal = osb->journal->j_journal; | |
512 | ||
513 | spin_lock(&journal->j_state_lock); | |
514 | journal->j_commit_interval = OCFS2_DEFAULT_COMMIT_INTERVAL; | |
515 | if (osb->s_mount_opt & OCFS2_MOUNT_BARRIER) | |
516 | journal->j_flags |= JFS_BARRIER; | |
517 | else | |
518 | journal->j_flags &= ~JFS_BARRIER; | |
519 | spin_unlock(&journal->j_state_lock); | |
520 | } | |
521 | ||
522 | int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty) | |
523 | { | |
524 | int status = -1; | |
525 | struct inode *inode = NULL; /* the journal inode */ | |
526 | journal_t *j_journal = NULL; | |
527 | struct ocfs2_dinode *di = NULL; | |
528 | struct buffer_head *bh = NULL; | |
529 | struct ocfs2_super *osb; | |
530 | int meta_lock = 0; | |
531 | ||
532 | mlog_entry_void(); | |
533 | ||
534 | BUG_ON(!journal); | |
535 | ||
536 | osb = journal->j_osb; | |
537 | ||
538 | /* already have the inode for our journal */ | |
539 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
540 | osb->slot_num); | |
541 | if (inode == NULL) { | |
542 | status = -EACCES; | |
543 | mlog_errno(status); | |
544 | goto done; | |
545 | } | |
546 | if (is_bad_inode(inode)) { | |
547 | mlog(ML_ERROR, "access error (bad inode)\n"); | |
548 | iput(inode); | |
549 | inode = NULL; | |
550 | status = -EACCES; | |
551 | goto done; | |
552 | } | |
553 | ||
554 | SET_INODE_JOURNAL(inode); | |
555 | OCFS2_I(inode)->ip_open_count++; | |
556 | ||
6eff5790 MF |
557 | /* Skip recovery waits here - journal inode metadata never |
558 | * changes in a live cluster so it can be considered an | |
559 | * exception to the rule. */ | |
560 | status = ocfs2_meta_lock_full(inode, NULL, &bh, 1, | |
561 | OCFS2_META_LOCK_RECOVERY); | |
ccd979bd MF |
562 | if (status < 0) { |
563 | if (status != -ERESTARTSYS) | |
564 | mlog(ML_ERROR, "Could not get lock on journal!\n"); | |
565 | goto done; | |
566 | } | |
567 | ||
568 | meta_lock = 1; | |
569 | di = (struct ocfs2_dinode *)bh->b_data; | |
570 | ||
571 | if (inode->i_size < OCFS2_MIN_JOURNAL_SIZE) { | |
572 | mlog(ML_ERROR, "Journal file size (%lld) is too small!\n", | |
573 | inode->i_size); | |
574 | status = -EINVAL; | |
575 | goto done; | |
576 | } | |
577 | ||
578 | mlog(0, "inode->i_size = %lld\n", inode->i_size); | |
5515eff8 AM |
579 | mlog(0, "inode->i_blocks = %llu\n", |
580 | (unsigned long long)inode->i_blocks); | |
ccd979bd MF |
581 | mlog(0, "inode->ip_clusters = %u\n", OCFS2_I(inode)->ip_clusters); |
582 | ||
583 | /* call the kernels journal init function now */ | |
584 | j_journal = journal_init_inode(inode); | |
585 | if (j_journal == NULL) { | |
586 | mlog(ML_ERROR, "Linux journal layer error\n"); | |
587 | status = -EINVAL; | |
588 | goto done; | |
589 | } | |
590 | ||
591 | mlog(0, "Returned from journal_init_inode\n"); | |
592 | mlog(0, "j_journal->j_maxlen = %u\n", j_journal->j_maxlen); | |
593 | ||
594 | *dirty = (le32_to_cpu(di->id1.journal1.ij_flags) & | |
595 | OCFS2_JOURNAL_DIRTY_FL); | |
596 | ||
597 | journal->j_journal = j_journal; | |
598 | journal->j_inode = inode; | |
599 | journal->j_bh = bh; | |
600 | ||
601 | ocfs2_set_journal_params(osb); | |
602 | ||
603 | journal->j_state = OCFS2_JOURNAL_LOADED; | |
604 | ||
605 | status = 0; | |
606 | done: | |
607 | if (status < 0) { | |
608 | if (meta_lock) | |
609 | ocfs2_meta_unlock(inode, 1); | |
610 | if (bh != NULL) | |
611 | brelse(bh); | |
612 | if (inode) { | |
613 | OCFS2_I(inode)->ip_open_count--; | |
614 | iput(inode); | |
615 | } | |
616 | } | |
617 | ||
618 | mlog_exit(status); | |
619 | return status; | |
620 | } | |
621 | ||
622 | static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, | |
623 | int dirty) | |
624 | { | |
625 | int status; | |
626 | unsigned int flags; | |
627 | struct ocfs2_journal *journal = osb->journal; | |
628 | struct buffer_head *bh = journal->j_bh; | |
629 | struct ocfs2_dinode *fe; | |
630 | ||
631 | mlog_entry_void(); | |
632 | ||
633 | fe = (struct ocfs2_dinode *)bh->b_data; | |
634 | if (!OCFS2_IS_VALID_DINODE(fe)) { | |
635 | /* This is called from startup/shutdown which will | |
636 | * handle the errors in a specific manner, so no need | |
637 | * to call ocfs2_error() here. */ | |
b0697053 MF |
638 | mlog(ML_ERROR, "Journal dinode %llu has invalid " |
639 | "signature: %.*s", (unsigned long long)fe->i_blkno, 7, | |
640 | fe->i_signature); | |
ccd979bd MF |
641 | status = -EIO; |
642 | goto out; | |
643 | } | |
644 | ||
645 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
646 | if (dirty) | |
647 | flags |= OCFS2_JOURNAL_DIRTY_FL; | |
648 | else | |
649 | flags &= ~OCFS2_JOURNAL_DIRTY_FL; | |
650 | fe->id1.journal1.ij_flags = cpu_to_le32(flags); | |
651 | ||
652 | status = ocfs2_write_block(osb, bh, journal->j_inode); | |
653 | if (status < 0) | |
654 | mlog_errno(status); | |
655 | ||
656 | out: | |
657 | mlog_exit(status); | |
658 | return status; | |
659 | } | |
660 | ||
661 | /* | |
662 | * If the journal has been kmalloc'd it needs to be freed after this | |
663 | * call. | |
664 | */ | |
665 | void ocfs2_journal_shutdown(struct ocfs2_super *osb) | |
666 | { | |
667 | struct ocfs2_journal *journal = NULL; | |
668 | int status = 0; | |
669 | struct inode *inode = NULL; | |
670 | int num_running_trans = 0; | |
671 | ||
672 | mlog_entry_void(); | |
673 | ||
ebdec83b | 674 | BUG_ON(!osb); |
ccd979bd MF |
675 | |
676 | journal = osb->journal; | |
677 | if (!journal) | |
678 | goto done; | |
679 | ||
680 | inode = journal->j_inode; | |
681 | ||
682 | if (journal->j_state != OCFS2_JOURNAL_LOADED) | |
683 | goto done; | |
684 | ||
685 | /* need to inc inode use count as journal_destroy will iput. */ | |
686 | if (!igrab(inode)) | |
687 | BUG(); | |
688 | ||
689 | num_running_trans = atomic_read(&(osb->journal->j_num_trans)); | |
690 | if (num_running_trans > 0) | |
691 | mlog(0, "Shutting down journal: must wait on %d " | |
692 | "running transactions!\n", | |
693 | num_running_trans); | |
694 | ||
695 | /* Do a commit_cache here. It will flush our journal, *and* | |
696 | * release any locks that are still held. | |
697 | * set the SHUTDOWN flag and release the trans lock. | |
698 | * the commit thread will take the trans lock for us below. */ | |
699 | journal->j_state = OCFS2_JOURNAL_IN_SHUTDOWN; | |
700 | ||
701 | /* The OCFS2_JOURNAL_IN_SHUTDOWN will signal to commit_cache to not | |
702 | * drop the trans_lock (which we want to hold until we | |
703 | * completely destroy the journal. */ | |
704 | if (osb->commit_task) { | |
705 | /* Wait for the commit thread */ | |
706 | mlog(0, "Waiting for ocfs2commit to exit....\n"); | |
707 | kthread_stop(osb->commit_task); | |
708 | osb->commit_task = NULL; | |
709 | } | |
710 | ||
711 | BUG_ON(atomic_read(&(osb->journal->j_num_trans)) != 0); | |
712 | ||
713 | status = ocfs2_journal_toggle_dirty(osb, 0); | |
714 | if (status < 0) | |
715 | mlog_errno(status); | |
716 | ||
717 | /* Shutdown the kernel journal system */ | |
718 | journal_destroy(journal->j_journal); | |
719 | ||
720 | OCFS2_I(inode)->ip_open_count--; | |
721 | ||
722 | /* unlock our journal */ | |
723 | ocfs2_meta_unlock(inode, 1); | |
724 | ||
725 | brelse(journal->j_bh); | |
726 | journal->j_bh = NULL; | |
727 | ||
728 | journal->j_state = OCFS2_JOURNAL_FREE; | |
729 | ||
730 | // up_write(&journal->j_trans_barrier); | |
731 | done: | |
732 | if (inode) | |
733 | iput(inode); | |
734 | mlog_exit_void(); | |
735 | } | |
736 | ||
737 | static void ocfs2_clear_journal_error(struct super_block *sb, | |
738 | journal_t *journal, | |
739 | int slot) | |
740 | { | |
741 | int olderr; | |
742 | ||
743 | olderr = journal_errno(journal); | |
744 | if (olderr) { | |
745 | mlog(ML_ERROR, "File system error %d recorded in " | |
746 | "journal %u.\n", olderr, slot); | |
747 | mlog(ML_ERROR, "File system on device %s needs checking.\n", | |
748 | sb->s_id); | |
749 | ||
750 | journal_ack_err(journal); | |
751 | journal_clear_err(journal); | |
752 | } | |
753 | } | |
754 | ||
755 | int ocfs2_journal_load(struct ocfs2_journal *journal) | |
756 | { | |
757 | int status = 0; | |
758 | struct ocfs2_super *osb; | |
759 | ||
760 | mlog_entry_void(); | |
761 | ||
762 | if (!journal) | |
763 | BUG(); | |
764 | ||
765 | osb = journal->j_osb; | |
766 | ||
767 | status = journal_load(journal->j_journal); | |
768 | if (status < 0) { | |
769 | mlog(ML_ERROR, "Failed to load journal!\n"); | |
770 | goto done; | |
771 | } | |
772 | ||
773 | ocfs2_clear_journal_error(osb->sb, journal->j_journal, osb->slot_num); | |
774 | ||
775 | status = ocfs2_journal_toggle_dirty(osb, 1); | |
776 | if (status < 0) { | |
777 | mlog_errno(status); | |
778 | goto done; | |
779 | } | |
780 | ||
781 | /* Launch the commit thread */ | |
78427043 | 782 | osb->commit_task = kthread_run(ocfs2_commit_thread, osb, "ocfs2cmt"); |
ccd979bd MF |
783 | if (IS_ERR(osb->commit_task)) { |
784 | status = PTR_ERR(osb->commit_task); | |
785 | osb->commit_task = NULL; | |
786 | mlog(ML_ERROR, "unable to launch ocfs2commit thread, error=%d", | |
787 | status); | |
788 | goto done; | |
789 | } | |
790 | ||
791 | done: | |
792 | mlog_exit(status); | |
793 | return status; | |
794 | } | |
795 | ||
796 | ||
797 | /* 'full' flag tells us whether we clear out all blocks or if we just | |
798 | * mark the journal clean */ | |
799 | int ocfs2_journal_wipe(struct ocfs2_journal *journal, int full) | |
800 | { | |
801 | int status; | |
802 | ||
803 | mlog_entry_void(); | |
804 | ||
ebdec83b | 805 | BUG_ON(!journal); |
ccd979bd MF |
806 | |
807 | status = journal_wipe(journal->j_journal, full); | |
808 | if (status < 0) { | |
809 | mlog_errno(status); | |
810 | goto bail; | |
811 | } | |
812 | ||
813 | status = ocfs2_journal_toggle_dirty(journal->j_osb, 0); | |
814 | if (status < 0) | |
815 | mlog_errno(status); | |
816 | ||
817 | bail: | |
818 | mlog_exit(status); | |
819 | return status; | |
820 | } | |
821 | ||
822 | /* | |
823 | * JBD Might read a cached version of another nodes journal file. We | |
824 | * don't want this as this file changes often and we get no | |
825 | * notification on those changes. The only way to be sure that we've | |
826 | * got the most up to date version of those blocks then is to force | |
827 | * read them off disk. Just searching through the buffer cache won't | |
828 | * work as there may be pages backing this file which are still marked | |
829 | * up to date. We know things can't change on this file underneath us | |
830 | * as we have the lock by now :) | |
831 | */ | |
832 | static int ocfs2_force_read_journal(struct inode *inode) | |
833 | { | |
834 | int status = 0; | |
835 | int i, p_blocks; | |
836 | u64 v_blkno, p_blkno; | |
837 | #define CONCURRENT_JOURNAL_FILL 32 | |
838 | struct buffer_head *bhs[CONCURRENT_JOURNAL_FILL]; | |
839 | ||
840 | mlog_entry_void(); | |
841 | ||
842 | BUG_ON(inode->i_blocks != | |
843 | ocfs2_align_bytes_to_sectors(i_size_read(inode))); | |
844 | ||
845 | memset(bhs, 0, sizeof(struct buffer_head *) * CONCURRENT_JOURNAL_FILL); | |
846 | ||
5515eff8 AM |
847 | mlog(0, "Force reading %llu blocks\n", |
848 | (unsigned long long)(inode->i_blocks >> | |
849 | (inode->i_sb->s_blocksize_bits - 9))); | |
ccd979bd MF |
850 | |
851 | v_blkno = 0; | |
852 | while (v_blkno < | |
853 | (inode->i_blocks >> (inode->i_sb->s_blocksize_bits - 9))) { | |
854 | ||
855 | status = ocfs2_extent_map_get_blocks(inode, v_blkno, | |
856 | 1, &p_blkno, | |
857 | &p_blocks); | |
858 | if (status < 0) { | |
859 | mlog_errno(status); | |
860 | goto bail; | |
861 | } | |
862 | ||
863 | if (p_blocks > CONCURRENT_JOURNAL_FILL) | |
864 | p_blocks = CONCURRENT_JOURNAL_FILL; | |
865 | ||
dd4a2c2b MF |
866 | /* We are reading journal data which should not |
867 | * be put in the uptodate cache */ | |
ccd979bd MF |
868 | status = ocfs2_read_blocks(OCFS2_SB(inode->i_sb), |
869 | p_blkno, p_blocks, bhs, 0, | |
dd4a2c2b | 870 | NULL); |
ccd979bd MF |
871 | if (status < 0) { |
872 | mlog_errno(status); | |
873 | goto bail; | |
874 | } | |
875 | ||
876 | for(i = 0; i < p_blocks; i++) { | |
877 | brelse(bhs[i]); | |
878 | bhs[i] = NULL; | |
879 | } | |
880 | ||
881 | v_blkno += p_blocks; | |
882 | } | |
883 | ||
884 | bail: | |
885 | for(i = 0; i < CONCURRENT_JOURNAL_FILL; i++) | |
886 | if (bhs[i]) | |
887 | brelse(bhs[i]); | |
888 | mlog_exit(status); | |
889 | return status; | |
890 | } | |
891 | ||
892 | struct ocfs2_la_recovery_item { | |
893 | struct list_head lri_list; | |
894 | int lri_slot; | |
895 | struct ocfs2_dinode *lri_la_dinode; | |
896 | struct ocfs2_dinode *lri_tl_dinode; | |
897 | }; | |
898 | ||
899 | /* Does the second half of the recovery process. By this point, the | |
900 | * node is marked clean and can actually be considered recovered, | |
901 | * hence it's no longer in the recovery map, but there's still some | |
902 | * cleanup we can do which shouldn't happen within the recovery thread | |
903 | * as locking in that context becomes very difficult if we are to take | |
904 | * recovering nodes into account. | |
905 | * | |
906 | * NOTE: This function can and will sleep on recovery of other nodes | |
907 | * during cluster locking, just like any other ocfs2 process. | |
908 | */ | |
909 | void ocfs2_complete_recovery(void *data) | |
910 | { | |
911 | int ret; | |
912 | struct ocfs2_super *osb = data; | |
913 | struct ocfs2_journal *journal = osb->journal; | |
914 | struct ocfs2_dinode *la_dinode, *tl_dinode; | |
915 | struct ocfs2_la_recovery_item *item; | |
916 | struct list_head *p, *n; | |
917 | LIST_HEAD(tmp_la_list); | |
918 | ||
919 | mlog_entry_void(); | |
920 | ||
921 | mlog(0, "completing recovery from keventd\n"); | |
922 | ||
923 | spin_lock(&journal->j_lock); | |
924 | list_splice_init(&journal->j_la_cleanups, &tmp_la_list); | |
925 | spin_unlock(&journal->j_lock); | |
926 | ||
927 | list_for_each_safe(p, n, &tmp_la_list) { | |
928 | item = list_entry(p, struct ocfs2_la_recovery_item, lri_list); | |
929 | list_del_init(&item->lri_list); | |
930 | ||
931 | mlog(0, "Complete recovery for slot %d\n", item->lri_slot); | |
932 | ||
933 | la_dinode = item->lri_la_dinode; | |
934 | if (la_dinode) { | |
b0697053 MF |
935 | mlog(0, "Clean up local alloc %llu\n", |
936 | (unsigned long long)la_dinode->i_blkno); | |
ccd979bd MF |
937 | |
938 | ret = ocfs2_complete_local_alloc_recovery(osb, | |
939 | la_dinode); | |
940 | if (ret < 0) | |
941 | mlog_errno(ret); | |
942 | ||
943 | kfree(la_dinode); | |
944 | } | |
945 | ||
946 | tl_dinode = item->lri_tl_dinode; | |
947 | if (tl_dinode) { | |
b0697053 MF |
948 | mlog(0, "Clean up truncate log %llu\n", |
949 | (unsigned long long)tl_dinode->i_blkno); | |
ccd979bd MF |
950 | |
951 | ret = ocfs2_complete_truncate_log_recovery(osb, | |
952 | tl_dinode); | |
953 | if (ret < 0) | |
954 | mlog_errno(ret); | |
955 | ||
956 | kfree(tl_dinode); | |
957 | } | |
958 | ||
959 | ret = ocfs2_recover_orphans(osb, item->lri_slot); | |
960 | if (ret < 0) | |
961 | mlog_errno(ret); | |
962 | ||
963 | kfree(item); | |
964 | } | |
965 | ||
966 | mlog(0, "Recovery completion\n"); | |
967 | mlog_exit_void(); | |
968 | } | |
969 | ||
970 | /* NOTE: This function always eats your references to la_dinode and | |
971 | * tl_dinode, either manually on error, or by passing them to | |
972 | * ocfs2_complete_recovery */ | |
973 | static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal, | |
974 | int slot_num, | |
975 | struct ocfs2_dinode *la_dinode, | |
976 | struct ocfs2_dinode *tl_dinode) | |
977 | { | |
978 | struct ocfs2_la_recovery_item *item; | |
979 | ||
afae00ab | 980 | item = kmalloc(sizeof(struct ocfs2_la_recovery_item), GFP_NOFS); |
ccd979bd MF |
981 | if (!item) { |
982 | /* Though we wish to avoid it, we are in fact safe in | |
983 | * skipping local alloc cleanup as fsck.ocfs2 is more | |
984 | * than capable of reclaiming unused space. */ | |
985 | if (la_dinode) | |
986 | kfree(la_dinode); | |
987 | ||
988 | if (tl_dinode) | |
989 | kfree(tl_dinode); | |
990 | ||
991 | mlog_errno(-ENOMEM); | |
992 | return; | |
993 | } | |
994 | ||
995 | INIT_LIST_HEAD(&item->lri_list); | |
996 | item->lri_la_dinode = la_dinode; | |
997 | item->lri_slot = slot_num; | |
998 | item->lri_tl_dinode = tl_dinode; | |
999 | ||
1000 | spin_lock(&journal->j_lock); | |
1001 | list_add_tail(&item->lri_list, &journal->j_la_cleanups); | |
1002 | queue_work(ocfs2_wq, &journal->j_recovery_work); | |
1003 | spin_unlock(&journal->j_lock); | |
1004 | } | |
1005 | ||
1006 | /* Called by the mount code to queue recovery the last part of | |
1007 | * recovery for it's own slot. */ | |
1008 | void ocfs2_complete_mount_recovery(struct ocfs2_super *osb) | |
1009 | { | |
1010 | struct ocfs2_journal *journal = osb->journal; | |
1011 | ||
1012 | if (osb->dirty) { | |
1013 | /* No need to queue up our truncate_log as regular | |
1014 | * cleanup will catch that. */ | |
1015 | ocfs2_queue_recovery_completion(journal, | |
1016 | osb->slot_num, | |
1017 | osb->local_alloc_copy, | |
1018 | NULL); | |
1019 | ocfs2_schedule_truncate_log_flush(osb, 0); | |
1020 | ||
1021 | osb->local_alloc_copy = NULL; | |
1022 | osb->dirty = 0; | |
1023 | } | |
1024 | } | |
1025 | ||
1026 | static int __ocfs2_recovery_thread(void *arg) | |
1027 | { | |
1028 | int status, node_num; | |
1029 | struct ocfs2_super *osb = arg; | |
1030 | ||
1031 | mlog_entry_void(); | |
1032 | ||
1033 | status = ocfs2_wait_on_mount(osb); | |
1034 | if (status < 0) { | |
1035 | goto bail; | |
1036 | } | |
1037 | ||
1038 | restart: | |
1039 | status = ocfs2_super_lock(osb, 1); | |
1040 | if (status < 0) { | |
1041 | mlog_errno(status); | |
1042 | goto bail; | |
1043 | } | |
1044 | ||
1045 | while(!ocfs2_node_map_is_empty(osb, &osb->recovery_map)) { | |
1046 | node_num = ocfs2_node_map_first_set_bit(osb, | |
1047 | &osb->recovery_map); | |
1048 | if (node_num == O2NM_INVALID_NODE_NUM) { | |
1049 | mlog(0, "Out of nodes to recover.\n"); | |
1050 | break; | |
1051 | } | |
1052 | ||
1053 | status = ocfs2_recover_node(osb, node_num); | |
1054 | if (status < 0) { | |
1055 | mlog(ML_ERROR, | |
1056 | "Error %d recovering node %d on device (%u,%u)!\n", | |
1057 | status, node_num, | |
1058 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
1059 | mlog(ML_ERROR, "Volume requires unmount.\n"); | |
1060 | continue; | |
1061 | } | |
1062 | ||
1063 | ocfs2_recovery_map_clear(osb, node_num); | |
1064 | } | |
1065 | ocfs2_super_unlock(osb, 1); | |
1066 | ||
1067 | /* We always run recovery on our own orphan dir - the dead | |
1068 | * node(s) may have voted "no" on an inode delete earlier. A | |
1069 | * revote is therefore required. */ | |
1070 | ocfs2_queue_recovery_completion(osb->journal, osb->slot_num, NULL, | |
1071 | NULL); | |
1072 | ||
1073 | bail: | |
c74ec2f7 | 1074 | mutex_lock(&osb->recovery_lock); |
ccd979bd MF |
1075 | if (!status && |
1076 | !ocfs2_node_map_is_empty(osb, &osb->recovery_map)) { | |
c74ec2f7 | 1077 | mutex_unlock(&osb->recovery_lock); |
ccd979bd MF |
1078 | goto restart; |
1079 | } | |
1080 | ||
1081 | osb->recovery_thread_task = NULL; | |
1082 | mb(); /* sync with ocfs2_recovery_thread_running */ | |
1083 | wake_up(&osb->recovery_event); | |
1084 | ||
c74ec2f7 | 1085 | mutex_unlock(&osb->recovery_lock); |
ccd979bd MF |
1086 | |
1087 | mlog_exit(status); | |
1088 | /* no one is callint kthread_stop() for us so the kthread() api | |
1089 | * requires that we call do_exit(). And it isn't exported, but | |
1090 | * complete_and_exit() seems to be a minimal wrapper around it. */ | |
1091 | complete_and_exit(NULL, status); | |
1092 | return status; | |
1093 | } | |
1094 | ||
1095 | void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num) | |
1096 | { | |
1097 | mlog_entry("(node_num=%d, osb->node_num = %d)\n", | |
1098 | node_num, osb->node_num); | |
1099 | ||
c74ec2f7 | 1100 | mutex_lock(&osb->recovery_lock); |
ccd979bd MF |
1101 | if (osb->disable_recovery) |
1102 | goto out; | |
1103 | ||
1104 | /* People waiting on recovery will wait on | |
1105 | * the recovery map to empty. */ | |
1106 | if (!ocfs2_recovery_map_set(osb, node_num)) | |
1107 | mlog(0, "node %d already be in recovery.\n", node_num); | |
1108 | ||
1109 | mlog(0, "starting recovery thread...\n"); | |
1110 | ||
1111 | if (osb->recovery_thread_task) | |
1112 | goto out; | |
1113 | ||
1114 | osb->recovery_thread_task = kthread_run(__ocfs2_recovery_thread, osb, | |
78427043 | 1115 | "ocfs2rec"); |
ccd979bd MF |
1116 | if (IS_ERR(osb->recovery_thread_task)) { |
1117 | mlog_errno((int)PTR_ERR(osb->recovery_thread_task)); | |
1118 | osb->recovery_thread_task = NULL; | |
1119 | } | |
1120 | ||
1121 | out: | |
c74ec2f7 | 1122 | mutex_unlock(&osb->recovery_lock); |
ccd979bd MF |
1123 | wake_up(&osb->recovery_event); |
1124 | ||
1125 | mlog_exit_void(); | |
1126 | } | |
1127 | ||
1128 | /* Does the actual journal replay and marks the journal inode as | |
1129 | * clean. Will only replay if the journal inode is marked dirty. */ | |
1130 | static int ocfs2_replay_journal(struct ocfs2_super *osb, | |
1131 | int node_num, | |
1132 | int slot_num) | |
1133 | { | |
1134 | int status; | |
1135 | int got_lock = 0; | |
1136 | unsigned int flags; | |
1137 | struct inode *inode = NULL; | |
1138 | struct ocfs2_dinode *fe; | |
1139 | journal_t *journal = NULL; | |
1140 | struct buffer_head *bh = NULL; | |
1141 | ||
1142 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
1143 | slot_num); | |
1144 | if (inode == NULL) { | |
1145 | status = -EACCES; | |
1146 | mlog_errno(status); | |
1147 | goto done; | |
1148 | } | |
1149 | if (is_bad_inode(inode)) { | |
1150 | status = -EACCES; | |
1151 | iput(inode); | |
1152 | inode = NULL; | |
1153 | mlog_errno(status); | |
1154 | goto done; | |
1155 | } | |
1156 | SET_INODE_JOURNAL(inode); | |
1157 | ||
1158 | status = ocfs2_meta_lock_full(inode, NULL, &bh, 1, | |
1159 | OCFS2_META_LOCK_RECOVERY); | |
1160 | if (status < 0) { | |
1161 | mlog(0, "status returned from ocfs2_meta_lock=%d\n", status); | |
1162 | if (status != -ERESTARTSYS) | |
1163 | mlog(ML_ERROR, "Could not lock journal!\n"); | |
1164 | goto done; | |
1165 | } | |
1166 | got_lock = 1; | |
1167 | ||
1168 | fe = (struct ocfs2_dinode *) bh->b_data; | |
1169 | ||
1170 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
1171 | ||
1172 | if (!(flags & OCFS2_JOURNAL_DIRTY_FL)) { | |
1173 | mlog(0, "No recovery required for node %d\n", node_num); | |
1174 | goto done; | |
1175 | } | |
1176 | ||
1177 | mlog(ML_NOTICE, "Recovering node %d from slot %d on device (%u,%u)\n", | |
1178 | node_num, slot_num, | |
1179 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
1180 | ||
1181 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); | |
1182 | ||
1183 | status = ocfs2_force_read_journal(inode); | |
1184 | if (status < 0) { | |
1185 | mlog_errno(status); | |
1186 | goto done; | |
1187 | } | |
1188 | ||
1189 | mlog(0, "calling journal_init_inode\n"); | |
1190 | journal = journal_init_inode(inode); | |
1191 | if (journal == NULL) { | |
1192 | mlog(ML_ERROR, "Linux journal layer error\n"); | |
1193 | status = -EIO; | |
1194 | goto done; | |
1195 | } | |
1196 | ||
1197 | status = journal_load(journal); | |
1198 | if (status < 0) { | |
1199 | mlog_errno(status); | |
1200 | if (!igrab(inode)) | |
1201 | BUG(); | |
1202 | journal_destroy(journal); | |
1203 | goto done; | |
1204 | } | |
1205 | ||
1206 | ocfs2_clear_journal_error(osb->sb, journal, slot_num); | |
1207 | ||
1208 | /* wipe the journal */ | |
1209 | mlog(0, "flushing the journal.\n"); | |
1210 | journal_lock_updates(journal); | |
1211 | status = journal_flush(journal); | |
1212 | journal_unlock_updates(journal); | |
1213 | if (status < 0) | |
1214 | mlog_errno(status); | |
1215 | ||
1216 | /* This will mark the node clean */ | |
1217 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
1218 | flags &= ~OCFS2_JOURNAL_DIRTY_FL; | |
1219 | fe->id1.journal1.ij_flags = cpu_to_le32(flags); | |
1220 | ||
1221 | status = ocfs2_write_block(osb, bh, inode); | |
1222 | if (status < 0) | |
1223 | mlog_errno(status); | |
1224 | ||
1225 | if (!igrab(inode)) | |
1226 | BUG(); | |
1227 | ||
1228 | journal_destroy(journal); | |
1229 | ||
1230 | done: | |
1231 | /* drop the lock on this nodes journal */ | |
1232 | if (got_lock) | |
1233 | ocfs2_meta_unlock(inode, 1); | |
1234 | ||
1235 | if (inode) | |
1236 | iput(inode); | |
1237 | ||
1238 | if (bh) | |
1239 | brelse(bh); | |
1240 | ||
1241 | mlog_exit(status); | |
1242 | return status; | |
1243 | } | |
1244 | ||
1245 | /* | |
1246 | * Do the most important parts of node recovery: | |
1247 | * - Replay it's journal | |
1248 | * - Stamp a clean local allocator file | |
1249 | * - Stamp a clean truncate log | |
1250 | * - Mark the node clean | |
1251 | * | |
1252 | * If this function completes without error, a node in OCFS2 can be | |
1253 | * said to have been safely recovered. As a result, failure during the | |
1254 | * second part of a nodes recovery process (local alloc recovery) is | |
1255 | * far less concerning. | |
1256 | */ | |
1257 | static int ocfs2_recover_node(struct ocfs2_super *osb, | |
1258 | int node_num) | |
1259 | { | |
1260 | int status = 0; | |
1261 | int slot_num; | |
1262 | struct ocfs2_slot_info *si = osb->slot_info; | |
1263 | struct ocfs2_dinode *la_copy = NULL; | |
1264 | struct ocfs2_dinode *tl_copy = NULL; | |
1265 | ||
1266 | mlog_entry("(node_num=%d, osb->node_num = %d)\n", | |
1267 | node_num, osb->node_num); | |
1268 | ||
1269 | mlog(0, "checking node %d\n", node_num); | |
1270 | ||
1271 | /* Should not ever be called to recover ourselves -- in that | |
1272 | * case we should've called ocfs2_journal_load instead. */ | |
ebdec83b | 1273 | BUG_ON(osb->node_num == node_num); |
ccd979bd MF |
1274 | |
1275 | slot_num = ocfs2_node_num_to_slot(si, node_num); | |
1276 | if (slot_num == OCFS2_INVALID_SLOT) { | |
1277 | status = 0; | |
1278 | mlog(0, "no slot for this node, so no recovery required.\n"); | |
1279 | goto done; | |
1280 | } | |
1281 | ||
1282 | mlog(0, "node %d was using slot %d\n", node_num, slot_num); | |
1283 | ||
1284 | status = ocfs2_replay_journal(osb, node_num, slot_num); | |
1285 | if (status < 0) { | |
1286 | mlog_errno(status); | |
1287 | goto done; | |
1288 | } | |
1289 | ||
1290 | /* Stamp a clean local alloc file AFTER recovering the journal... */ | |
1291 | status = ocfs2_begin_local_alloc_recovery(osb, slot_num, &la_copy); | |
1292 | if (status < 0) { | |
1293 | mlog_errno(status); | |
1294 | goto done; | |
1295 | } | |
1296 | ||
1297 | /* An error from begin_truncate_log_recovery is not | |
1298 | * serious enough to warrant halting the rest of | |
1299 | * recovery. */ | |
1300 | status = ocfs2_begin_truncate_log_recovery(osb, slot_num, &tl_copy); | |
1301 | if (status < 0) | |
1302 | mlog_errno(status); | |
1303 | ||
1304 | /* Likewise, this would be a strange but ultimately not so | |
1305 | * harmful place to get an error... */ | |
1306 | ocfs2_clear_slot(si, slot_num); | |
1307 | status = ocfs2_update_disk_slots(osb, si); | |
1308 | if (status < 0) | |
1309 | mlog_errno(status); | |
1310 | ||
1311 | /* This will kfree the memory pointed to by la_copy and tl_copy */ | |
1312 | ocfs2_queue_recovery_completion(osb->journal, slot_num, la_copy, | |
1313 | tl_copy); | |
1314 | ||
1315 | status = 0; | |
1316 | done: | |
1317 | ||
1318 | mlog_exit(status); | |
1319 | return status; | |
1320 | } | |
1321 | ||
1322 | /* Test node liveness by trylocking his journal. If we get the lock, | |
1323 | * we drop it here. Return 0 if we got the lock, -EAGAIN if node is | |
1324 | * still alive (we couldn't get the lock) and < 0 on error. */ | |
1325 | static int ocfs2_trylock_journal(struct ocfs2_super *osb, | |
1326 | int slot_num) | |
1327 | { | |
1328 | int status, flags; | |
1329 | struct inode *inode = NULL; | |
1330 | ||
1331 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
1332 | slot_num); | |
1333 | if (inode == NULL) { | |
1334 | mlog(ML_ERROR, "access error\n"); | |
1335 | status = -EACCES; | |
1336 | goto bail; | |
1337 | } | |
1338 | if (is_bad_inode(inode)) { | |
1339 | mlog(ML_ERROR, "access error (bad inode)\n"); | |
1340 | iput(inode); | |
1341 | inode = NULL; | |
1342 | status = -EACCES; | |
1343 | goto bail; | |
1344 | } | |
1345 | SET_INODE_JOURNAL(inode); | |
1346 | ||
1347 | flags = OCFS2_META_LOCK_RECOVERY | OCFS2_META_LOCK_NOQUEUE; | |
1348 | status = ocfs2_meta_lock_full(inode, NULL, NULL, 1, flags); | |
1349 | if (status < 0) { | |
1350 | if (status != -EAGAIN) | |
1351 | mlog_errno(status); | |
1352 | goto bail; | |
1353 | } | |
1354 | ||
1355 | ocfs2_meta_unlock(inode, 1); | |
1356 | bail: | |
1357 | if (inode) | |
1358 | iput(inode); | |
1359 | ||
1360 | return status; | |
1361 | } | |
1362 | ||
1363 | /* Call this underneath ocfs2_super_lock. It also assumes that the | |
1364 | * slot info struct has been updated from disk. */ | |
1365 | int ocfs2_mark_dead_nodes(struct ocfs2_super *osb) | |
1366 | { | |
1367 | int status, i, node_num; | |
1368 | struct ocfs2_slot_info *si = osb->slot_info; | |
1369 | ||
1370 | /* This is called with the super block cluster lock, so we | |
1371 | * know that the slot map can't change underneath us. */ | |
1372 | ||
1373 | spin_lock(&si->si_lock); | |
1374 | for(i = 0; i < si->si_num_slots; i++) { | |
1375 | if (i == osb->slot_num) | |
1376 | continue; | |
1377 | if (ocfs2_is_empty_slot(si, i)) | |
1378 | continue; | |
1379 | ||
1380 | node_num = si->si_global_node_nums[i]; | |
1381 | if (ocfs2_node_map_test_bit(osb, &osb->recovery_map, node_num)) | |
1382 | continue; | |
1383 | spin_unlock(&si->si_lock); | |
1384 | ||
1385 | /* Ok, we have a slot occupied by another node which | |
1386 | * is not in the recovery map. We trylock his journal | |
1387 | * file here to test if he's alive. */ | |
1388 | status = ocfs2_trylock_journal(osb, i); | |
1389 | if (!status) { | |
1390 | /* Since we're called from mount, we know that | |
1391 | * the recovery thread can't race us on | |
1392 | * setting / checking the recovery bits. */ | |
1393 | ocfs2_recovery_thread(osb, node_num); | |
1394 | } else if ((status < 0) && (status != -EAGAIN)) { | |
1395 | mlog_errno(status); | |
1396 | goto bail; | |
1397 | } | |
1398 | ||
1399 | spin_lock(&si->si_lock); | |
1400 | } | |
1401 | spin_unlock(&si->si_lock); | |
1402 | ||
1403 | status = 0; | |
1404 | bail: | |
1405 | mlog_exit(status); | |
1406 | return status; | |
1407 | } | |
1408 | ||
b4df6ed8 MF |
1409 | static int ocfs2_queue_orphans(struct ocfs2_super *osb, |
1410 | int slot, | |
1411 | struct inode **head) | |
ccd979bd | 1412 | { |
b4df6ed8 | 1413 | int status; |
ccd979bd | 1414 | struct inode *orphan_dir_inode = NULL; |
b4df6ed8 | 1415 | struct inode *iter; |
ccd979bd MF |
1416 | unsigned long offset, blk, local; |
1417 | struct buffer_head *bh = NULL; | |
1418 | struct ocfs2_dir_entry *de; | |
1419 | struct super_block *sb = osb->sb; | |
ccd979bd MF |
1420 | |
1421 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
1422 | ORPHAN_DIR_SYSTEM_INODE, | |
1423 | slot); | |
1424 | if (!orphan_dir_inode) { | |
1425 | status = -ENOENT; | |
1426 | mlog_errno(status); | |
b4df6ed8 MF |
1427 | return status; |
1428 | } | |
ccd979bd | 1429 | |
1b1dcc1b | 1430 | mutex_lock(&orphan_dir_inode->i_mutex); |
ccd979bd MF |
1431 | status = ocfs2_meta_lock(orphan_dir_inode, NULL, NULL, 0); |
1432 | if (status < 0) { | |
ccd979bd MF |
1433 | mlog_errno(status); |
1434 | goto out; | |
1435 | } | |
ccd979bd MF |
1436 | |
1437 | offset = 0; | |
1438 | iter = NULL; | |
1439 | while(offset < i_size_read(orphan_dir_inode)) { | |
1440 | blk = offset >> sb->s_blocksize_bits; | |
1441 | ||
1442 | bh = ocfs2_bread(orphan_dir_inode, blk, &status, 0); | |
1443 | if (!bh) | |
1444 | status = -EINVAL; | |
1445 | if (status < 0) { | |
ccd979bd MF |
1446 | if (bh) |
1447 | brelse(bh); | |
1448 | mlog_errno(status); | |
b4df6ed8 | 1449 | goto out_unlock; |
ccd979bd MF |
1450 | } |
1451 | ||
1452 | local = 0; | |
1453 | while(offset < i_size_read(orphan_dir_inode) | |
1454 | && local < sb->s_blocksize) { | |
1455 | de = (struct ocfs2_dir_entry *) (bh->b_data + local); | |
1456 | ||
1457 | if (!ocfs2_check_dir_entry(orphan_dir_inode, | |
1458 | de, bh, local)) { | |
ccd979bd MF |
1459 | status = -EINVAL; |
1460 | mlog_errno(status); | |
1461 | brelse(bh); | |
b4df6ed8 | 1462 | goto out_unlock; |
ccd979bd MF |
1463 | } |
1464 | ||
1465 | local += le16_to_cpu(de->rec_len); | |
1466 | offset += le16_to_cpu(de->rec_len); | |
1467 | ||
1468 | /* I guess we silently fail on no inode? */ | |
1469 | if (!le64_to_cpu(de->inode)) | |
1470 | continue; | |
1471 | if (de->file_type > OCFS2_FT_MAX) { | |
1472 | mlog(ML_ERROR, | |
1473 | "block %llu contains invalid de: " | |
b0697053 | 1474 | "inode = %llu, rec_len = %u, " |
ccd979bd MF |
1475 | "name_len = %u, file_type = %u, " |
1476 | "name='%.*s'\n", | |
1477 | (unsigned long long)bh->b_blocknr, | |
b0697053 | 1478 | (unsigned long long)le64_to_cpu(de->inode), |
ccd979bd MF |
1479 | le16_to_cpu(de->rec_len), |
1480 | de->name_len, | |
1481 | de->file_type, | |
1482 | de->name_len, | |
1483 | de->name); | |
1484 | continue; | |
1485 | } | |
1486 | if (de->name_len == 1 && !strncmp(".", de->name, 1)) | |
1487 | continue; | |
1488 | if (de->name_len == 2 && !strncmp("..", de->name, 2)) | |
1489 | continue; | |
1490 | ||
24c19ef4 MF |
1491 | iter = ocfs2_iget(osb, le64_to_cpu(de->inode), |
1492 | OCFS2_FI_FLAG_NOLOCK); | |
ccd979bd MF |
1493 | if (IS_ERR(iter)) |
1494 | continue; | |
1495 | ||
b0697053 MF |
1496 | mlog(0, "queue orphan %llu\n", |
1497 | (unsigned long long)OCFS2_I(iter)->ip_blkno); | |
b4df6ed8 MF |
1498 | /* No locking is required for the next_orphan |
1499 | * queue as there is only ever a single | |
1500 | * process doing orphan recovery. */ | |
1501 | OCFS2_I(iter)->ip_next_orphan = *head; | |
1502 | *head = iter; | |
ccd979bd MF |
1503 | } |
1504 | brelse(bh); | |
1505 | } | |
ccd979bd | 1506 | |
b4df6ed8 | 1507 | out_unlock: |
ccd979bd | 1508 | ocfs2_meta_unlock(orphan_dir_inode, 0); |
b4df6ed8 MF |
1509 | out: |
1510 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
ccd979bd | 1511 | iput(orphan_dir_inode); |
b4df6ed8 MF |
1512 | return status; |
1513 | } | |
1514 | ||
1515 | static int ocfs2_orphan_recovery_can_continue(struct ocfs2_super *osb, | |
1516 | int slot) | |
1517 | { | |
1518 | int ret; | |
1519 | ||
1520 | spin_lock(&osb->osb_lock); | |
1521 | ret = !osb->osb_orphan_wipes[slot]; | |
1522 | spin_unlock(&osb->osb_lock); | |
1523 | return ret; | |
1524 | } | |
1525 | ||
1526 | static void ocfs2_mark_recovering_orphan_dir(struct ocfs2_super *osb, | |
1527 | int slot) | |
1528 | { | |
1529 | spin_lock(&osb->osb_lock); | |
1530 | /* Mark ourselves such that new processes in delete_inode() | |
1531 | * know to quit early. */ | |
1532 | ocfs2_node_map_set_bit(osb, &osb->osb_recovering_orphan_dirs, slot); | |
1533 | while (osb->osb_orphan_wipes[slot]) { | |
1534 | /* If any processes are already in the middle of an | |
1535 | * orphan wipe on this dir, then we need to wait for | |
1536 | * them. */ | |
1537 | spin_unlock(&osb->osb_lock); | |
1538 | wait_event_interruptible(osb->osb_wipe_event, | |
1539 | ocfs2_orphan_recovery_can_continue(osb, slot)); | |
1540 | spin_lock(&osb->osb_lock); | |
1541 | } | |
1542 | spin_unlock(&osb->osb_lock); | |
1543 | } | |
1544 | ||
1545 | static void ocfs2_clear_recovering_orphan_dir(struct ocfs2_super *osb, | |
1546 | int slot) | |
1547 | { | |
1548 | ocfs2_node_map_clear_bit(osb, &osb->osb_recovering_orphan_dirs, slot); | |
1549 | } | |
1550 | ||
1551 | /* | |
1552 | * Orphan recovery. Each mounted node has it's own orphan dir which we | |
1553 | * must run during recovery. Our strategy here is to build a list of | |
1554 | * the inodes in the orphan dir and iget/iput them. The VFS does | |
1555 | * (most) of the rest of the work. | |
1556 | * | |
1557 | * Orphan recovery can happen at any time, not just mount so we have a | |
1558 | * couple of extra considerations. | |
1559 | * | |
1560 | * - We grab as many inodes as we can under the orphan dir lock - | |
1561 | * doing iget() outside the orphan dir risks getting a reference on | |
1562 | * an invalid inode. | |
1563 | * - We must be sure not to deadlock with other processes on the | |
1564 | * system wanting to run delete_inode(). This can happen when they go | |
1565 | * to lock the orphan dir and the orphan recovery process attempts to | |
1566 | * iget() inside the orphan dir lock. This can be avoided by | |
1567 | * advertising our state to ocfs2_delete_inode(). | |
1568 | */ | |
1569 | static int ocfs2_recover_orphans(struct ocfs2_super *osb, | |
1570 | int slot) | |
1571 | { | |
1572 | int ret = 0; | |
1573 | struct inode *inode = NULL; | |
1574 | struct inode *iter; | |
1575 | struct ocfs2_inode_info *oi; | |
1576 | ||
1577 | mlog(0, "Recover inodes from orphan dir in slot %d\n", slot); | |
1578 | ||
1579 | ocfs2_mark_recovering_orphan_dir(osb, slot); | |
1580 | ret = ocfs2_queue_orphans(osb, slot, &inode); | |
1581 | ocfs2_clear_recovering_orphan_dir(osb, slot); | |
1582 | ||
1583 | /* Error here should be noted, but we want to continue with as | |
1584 | * many queued inodes as we've got. */ | |
1585 | if (ret) | |
1586 | mlog_errno(ret); | |
ccd979bd MF |
1587 | |
1588 | while (inode) { | |
1589 | oi = OCFS2_I(inode); | |
b0697053 | 1590 | mlog(0, "iput orphan %llu\n", (unsigned long long)oi->ip_blkno); |
ccd979bd MF |
1591 | |
1592 | iter = oi->ip_next_orphan; | |
1593 | ||
1594 | spin_lock(&oi->ip_lock); | |
1595 | /* Delete voting may have set these on the assumption | |
1596 | * that the other node would wipe them successfully. | |
1597 | * If they are still in the node's orphan dir, we need | |
1598 | * to reset that state. */ | |
1599 | oi->ip_flags &= ~(OCFS2_INODE_DELETED|OCFS2_INODE_SKIP_DELETE); | |
1600 | ||
1601 | /* Set the proper information to get us going into | |
1602 | * ocfs2_delete_inode. */ | |
1603 | oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED; | |
1604 | oi->ip_orphaned_slot = slot; | |
1605 | spin_unlock(&oi->ip_lock); | |
1606 | ||
1607 | iput(inode); | |
1608 | ||
1609 | inode = iter; | |
1610 | } | |
1611 | ||
b4df6ed8 | 1612 | return ret; |
ccd979bd MF |
1613 | } |
1614 | ||
1615 | static int ocfs2_wait_on_mount(struct ocfs2_super *osb) | |
1616 | { | |
1617 | /* This check is good because ocfs2 will wait on our recovery | |
1618 | * thread before changing it to something other than MOUNTED | |
1619 | * or DISABLED. */ | |
1620 | wait_event(osb->osb_mount_event, | |
1621 | atomic_read(&osb->vol_state) == VOLUME_MOUNTED || | |
1622 | atomic_read(&osb->vol_state) == VOLUME_DISABLED); | |
1623 | ||
1624 | /* If there's an error on mount, then we may never get to the | |
1625 | * MOUNTED flag, but this is set right before | |
1626 | * dismount_volume() so we can trust it. */ | |
1627 | if (atomic_read(&osb->vol_state) == VOLUME_DISABLED) { | |
1628 | mlog(0, "mount error, exiting!\n"); | |
1629 | return -EBUSY; | |
1630 | } | |
1631 | ||
1632 | return 0; | |
1633 | } | |
1634 | ||
1635 | static int ocfs2_commit_thread(void *arg) | |
1636 | { | |
1637 | int status; | |
1638 | struct ocfs2_super *osb = arg; | |
1639 | struct ocfs2_journal *journal = osb->journal; | |
1640 | ||
1641 | /* we can trust j_num_trans here because _should_stop() is only set in | |
1642 | * shutdown and nobody other than ourselves should be able to start | |
1643 | * transactions. committing on shutdown might take a few iterations | |
1644 | * as final transactions put deleted inodes on the list */ | |
1645 | while (!(kthread_should_stop() && | |
1646 | atomic_read(&journal->j_num_trans) == 0)) { | |
1647 | ||
745ae8ba MF |
1648 | wait_event_interruptible(osb->checkpoint_event, |
1649 | atomic_read(&journal->j_num_trans) | |
1650 | || kthread_should_stop()); | |
ccd979bd MF |
1651 | |
1652 | status = ocfs2_commit_cache(osb); | |
1653 | if (status < 0) | |
1654 | mlog_errno(status); | |
1655 | ||
1656 | if (kthread_should_stop() && atomic_read(&journal->j_num_trans)){ | |
1657 | mlog(ML_KTHREAD, | |
1658 | "commit_thread: %u transactions pending on " | |
1659 | "shutdown\n", | |
1660 | atomic_read(&journal->j_num_trans)); | |
1661 | } | |
1662 | } | |
1663 | ||
1664 | return 0; | |
1665 | } | |
1666 | ||
1667 | /* Look for a dirty journal without taking any cluster locks. Used for | |
1668 | * hard readonly access to determine whether the file system journals | |
1669 | * require recovery. */ | |
1670 | int ocfs2_check_journals_nolocks(struct ocfs2_super *osb) | |
1671 | { | |
1672 | int ret = 0; | |
1673 | unsigned int slot; | |
1674 | struct buffer_head *di_bh; | |
1675 | struct ocfs2_dinode *di; | |
1676 | struct inode *journal = NULL; | |
1677 | ||
1678 | for(slot = 0; slot < osb->max_slots; slot++) { | |
1679 | journal = ocfs2_get_system_file_inode(osb, | |
1680 | JOURNAL_SYSTEM_INODE, | |
1681 | slot); | |
1682 | if (!journal || is_bad_inode(journal)) { | |
1683 | ret = -EACCES; | |
1684 | mlog_errno(ret); | |
1685 | goto out; | |
1686 | } | |
1687 | ||
1688 | di_bh = NULL; | |
1689 | ret = ocfs2_read_block(osb, OCFS2_I(journal)->ip_blkno, &di_bh, | |
1690 | 0, journal); | |
1691 | if (ret < 0) { | |
1692 | mlog_errno(ret); | |
1693 | goto out; | |
1694 | } | |
1695 | ||
1696 | di = (struct ocfs2_dinode *) di_bh->b_data; | |
1697 | ||
1698 | if (le32_to_cpu(di->id1.journal1.ij_flags) & | |
1699 | OCFS2_JOURNAL_DIRTY_FL) | |
1700 | ret = -EROFS; | |
1701 | ||
1702 | brelse(di_bh); | |
1703 | if (ret) | |
1704 | break; | |
1705 | } | |
1706 | ||
1707 | out: | |
1708 | if (journal) | |
1709 | iput(journal); | |
1710 | ||
1711 | return ret; | |
1712 | } |