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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> | |
83273932 SE |
31 | #include <linux/time.h> |
32 | #include <linux/random.h> | |
ccd979bd | 33 | |
ccd979bd MF |
34 | #include <cluster/masklog.h> |
35 | ||
36 | #include "ocfs2.h" | |
37 | ||
38 | #include "alloc.h" | |
50655ae9 | 39 | #include "blockcheck.h" |
316f4b9f | 40 | #include "dir.h" |
ccd979bd MF |
41 | #include "dlmglue.h" |
42 | #include "extent_map.h" | |
43 | #include "heartbeat.h" | |
44 | #include "inode.h" | |
45 | #include "journal.h" | |
46 | #include "localalloc.h" | |
ccd979bd MF |
47 | #include "slot_map.h" |
48 | #include "super.h" | |
ccd979bd | 49 | #include "sysfile.h" |
0cf2f763 | 50 | #include "uptodate.h" |
2205363d | 51 | #include "quota.h" |
ccd979bd MF |
52 | |
53 | #include "buffer_head_io.h" | |
b4107950 | 54 | #include "ocfs2_trace.h" |
ccd979bd | 55 | |
34af946a | 56 | DEFINE_SPINLOCK(trans_inc_lock); |
ccd979bd | 57 | |
83273932 SE |
58 | #define ORPHAN_SCAN_SCHEDULE_TIMEOUT 300000 |
59 | ||
ccd979bd MF |
60 | static int ocfs2_force_read_journal(struct inode *inode); |
61 | static int ocfs2_recover_node(struct ocfs2_super *osb, | |
2205363d | 62 | int node_num, int slot_num); |
ccd979bd MF |
63 | static int __ocfs2_recovery_thread(void *arg); |
64 | static int ocfs2_commit_cache(struct ocfs2_super *osb); | |
19ece546 | 65 | static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota); |
ccd979bd | 66 | static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, |
539d8264 | 67 | int dirty, int replayed); |
ccd979bd MF |
68 | static int ocfs2_trylock_journal(struct ocfs2_super *osb, |
69 | int slot_num); | |
70 | static int ocfs2_recover_orphans(struct ocfs2_super *osb, | |
71 | int slot); | |
72 | static int ocfs2_commit_thread(void *arg); | |
9140db04 SE |
73 | static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal, |
74 | int slot_num, | |
75 | struct ocfs2_dinode *la_dinode, | |
76 | struct ocfs2_dinode *tl_dinode, | |
77 | struct ocfs2_quota_recovery *qrec); | |
ccd979bd | 78 | |
19ece546 JK |
79 | static inline int ocfs2_wait_on_mount(struct ocfs2_super *osb) |
80 | { | |
81 | return __ocfs2_wait_on_mount(osb, 0); | |
82 | } | |
83 | ||
84 | static inline int ocfs2_wait_on_quotas(struct ocfs2_super *osb) | |
85 | { | |
86 | return __ocfs2_wait_on_mount(osb, 1); | |
87 | } | |
88 | ||
9140db04 SE |
89 | /* |
90 | * This replay_map is to track online/offline slots, so we could recover | |
91 | * offline slots during recovery and mount | |
92 | */ | |
93 | ||
94 | enum ocfs2_replay_state { | |
95 | REPLAY_UNNEEDED = 0, /* Replay is not needed, so ignore this map */ | |
96 | REPLAY_NEEDED, /* Replay slots marked in rm_replay_slots */ | |
97 | REPLAY_DONE /* Replay was already queued */ | |
98 | }; | |
99 | ||
100 | struct ocfs2_replay_map { | |
101 | unsigned int rm_slots; | |
102 | enum ocfs2_replay_state rm_state; | |
103 | unsigned char rm_replay_slots[0]; | |
104 | }; | |
105 | ||
106 | void ocfs2_replay_map_set_state(struct ocfs2_super *osb, int state) | |
107 | { | |
108 | if (!osb->replay_map) | |
109 | return; | |
110 | ||
111 | /* If we've already queued the replay, we don't have any more to do */ | |
112 | if (osb->replay_map->rm_state == REPLAY_DONE) | |
113 | return; | |
114 | ||
115 | osb->replay_map->rm_state = state; | |
116 | } | |
117 | ||
118 | int ocfs2_compute_replay_slots(struct ocfs2_super *osb) | |
119 | { | |
120 | struct ocfs2_replay_map *replay_map; | |
121 | int i, node_num; | |
122 | ||
123 | /* If replay map is already set, we don't do it again */ | |
124 | if (osb->replay_map) | |
125 | return 0; | |
126 | ||
127 | replay_map = kzalloc(sizeof(struct ocfs2_replay_map) + | |
128 | (osb->max_slots * sizeof(char)), GFP_KERNEL); | |
129 | ||
130 | if (!replay_map) { | |
131 | mlog_errno(-ENOMEM); | |
132 | return -ENOMEM; | |
133 | } | |
134 | ||
135 | spin_lock(&osb->osb_lock); | |
136 | ||
137 | replay_map->rm_slots = osb->max_slots; | |
138 | replay_map->rm_state = REPLAY_UNNEEDED; | |
139 | ||
140 | /* set rm_replay_slots for offline slot(s) */ | |
141 | for (i = 0; i < replay_map->rm_slots; i++) { | |
142 | if (ocfs2_slot_to_node_num_locked(osb, i, &node_num) == -ENOENT) | |
143 | replay_map->rm_replay_slots[i] = 1; | |
144 | } | |
145 | ||
146 | osb->replay_map = replay_map; | |
147 | spin_unlock(&osb->osb_lock); | |
148 | return 0; | |
149 | } | |
150 | ||
151 | void ocfs2_queue_replay_slots(struct ocfs2_super *osb) | |
152 | { | |
153 | struct ocfs2_replay_map *replay_map = osb->replay_map; | |
154 | int i; | |
155 | ||
156 | if (!replay_map) | |
157 | return; | |
158 | ||
159 | if (replay_map->rm_state != REPLAY_NEEDED) | |
160 | return; | |
161 | ||
162 | for (i = 0; i < replay_map->rm_slots; i++) | |
163 | if (replay_map->rm_replay_slots[i]) | |
164 | ocfs2_queue_recovery_completion(osb->journal, i, NULL, | |
165 | NULL, NULL); | |
166 | replay_map->rm_state = REPLAY_DONE; | |
167 | } | |
168 | ||
169 | void ocfs2_free_replay_slots(struct ocfs2_super *osb) | |
170 | { | |
171 | struct ocfs2_replay_map *replay_map = osb->replay_map; | |
172 | ||
173 | if (!osb->replay_map) | |
174 | return; | |
175 | ||
176 | kfree(replay_map); | |
177 | osb->replay_map = NULL; | |
178 | } | |
179 | ||
553abd04 JB |
180 | int ocfs2_recovery_init(struct ocfs2_super *osb) |
181 | { | |
182 | struct ocfs2_recovery_map *rm; | |
183 | ||
184 | mutex_init(&osb->recovery_lock); | |
185 | osb->disable_recovery = 0; | |
186 | osb->recovery_thread_task = NULL; | |
187 | init_waitqueue_head(&osb->recovery_event); | |
188 | ||
189 | rm = kzalloc(sizeof(struct ocfs2_recovery_map) + | |
190 | osb->max_slots * sizeof(unsigned int), | |
191 | GFP_KERNEL); | |
192 | if (!rm) { | |
193 | mlog_errno(-ENOMEM); | |
194 | return -ENOMEM; | |
195 | } | |
196 | ||
197 | rm->rm_entries = (unsigned int *)((char *)rm + | |
198 | sizeof(struct ocfs2_recovery_map)); | |
199 | osb->recovery_map = rm; | |
200 | ||
201 | return 0; | |
202 | } | |
203 | ||
204 | /* we can't grab the goofy sem lock from inside wait_event, so we use | |
205 | * memory barriers to make sure that we'll see the null task before | |
206 | * being woken up */ | |
207 | static int ocfs2_recovery_thread_running(struct ocfs2_super *osb) | |
208 | { | |
209 | mb(); | |
210 | return osb->recovery_thread_task != NULL; | |
211 | } | |
212 | ||
213 | void ocfs2_recovery_exit(struct ocfs2_super *osb) | |
214 | { | |
215 | struct ocfs2_recovery_map *rm; | |
216 | ||
217 | /* disable any new recovery threads and wait for any currently | |
218 | * running ones to exit. Do this before setting the vol_state. */ | |
219 | mutex_lock(&osb->recovery_lock); | |
220 | osb->disable_recovery = 1; | |
221 | mutex_unlock(&osb->recovery_lock); | |
222 | wait_event(osb->recovery_event, !ocfs2_recovery_thread_running(osb)); | |
223 | ||
224 | /* At this point, we know that no more recovery threads can be | |
225 | * launched, so wait for any recovery completion work to | |
226 | * complete. */ | |
227 | flush_workqueue(ocfs2_wq); | |
228 | ||
229 | /* | |
230 | * Now that recovery is shut down, and the osb is about to be | |
231 | * freed, the osb_lock is not taken here. | |
232 | */ | |
233 | rm = osb->recovery_map; | |
234 | /* XXX: Should we bug if there are dirty entries? */ | |
235 | ||
236 | kfree(rm); | |
237 | } | |
238 | ||
239 | static int __ocfs2_recovery_map_test(struct ocfs2_super *osb, | |
240 | unsigned int node_num) | |
241 | { | |
242 | int i; | |
243 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
244 | ||
245 | assert_spin_locked(&osb->osb_lock); | |
246 | ||
247 | for (i = 0; i < rm->rm_used; i++) { | |
248 | if (rm->rm_entries[i] == node_num) | |
249 | return 1; | |
250 | } | |
251 | ||
252 | return 0; | |
253 | } | |
254 | ||
255 | /* Behaves like test-and-set. Returns the previous value */ | |
256 | static int ocfs2_recovery_map_set(struct ocfs2_super *osb, | |
257 | unsigned int node_num) | |
258 | { | |
259 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
260 | ||
261 | spin_lock(&osb->osb_lock); | |
262 | if (__ocfs2_recovery_map_test(osb, node_num)) { | |
263 | spin_unlock(&osb->osb_lock); | |
264 | return 1; | |
265 | } | |
266 | ||
267 | /* XXX: Can this be exploited? Not from o2dlm... */ | |
268 | BUG_ON(rm->rm_used >= osb->max_slots); | |
269 | ||
270 | rm->rm_entries[rm->rm_used] = node_num; | |
271 | rm->rm_used++; | |
272 | spin_unlock(&osb->osb_lock); | |
273 | ||
274 | return 0; | |
275 | } | |
276 | ||
277 | static void ocfs2_recovery_map_clear(struct ocfs2_super *osb, | |
278 | unsigned int node_num) | |
279 | { | |
280 | int i; | |
281 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
282 | ||
283 | spin_lock(&osb->osb_lock); | |
284 | ||
285 | for (i = 0; i < rm->rm_used; i++) { | |
286 | if (rm->rm_entries[i] == node_num) | |
287 | break; | |
288 | } | |
289 | ||
290 | if (i < rm->rm_used) { | |
291 | /* XXX: be careful with the pointer math */ | |
292 | memmove(&(rm->rm_entries[i]), &(rm->rm_entries[i + 1]), | |
293 | (rm->rm_used - i - 1) * sizeof(unsigned int)); | |
294 | rm->rm_used--; | |
295 | } | |
296 | ||
297 | spin_unlock(&osb->osb_lock); | |
298 | } | |
299 | ||
ccd979bd MF |
300 | static int ocfs2_commit_cache(struct ocfs2_super *osb) |
301 | { | |
302 | int status = 0; | |
303 | unsigned int flushed; | |
ccd979bd MF |
304 | struct ocfs2_journal *journal = NULL; |
305 | ||
ccd979bd MF |
306 | journal = osb->journal; |
307 | ||
308 | /* Flush all pending commits and checkpoint the journal. */ | |
309 | down_write(&journal->j_trans_barrier); | |
310 | ||
b4107950 TM |
311 | flushed = atomic_read(&journal->j_num_trans); |
312 | trace_ocfs2_commit_cache_begin(flushed); | |
313 | if (flushed == 0) { | |
ccd979bd | 314 | up_write(&journal->j_trans_barrier); |
ccd979bd MF |
315 | goto finally; |
316 | } | |
317 | ||
2b4e30fb JB |
318 | jbd2_journal_lock_updates(journal->j_journal); |
319 | status = jbd2_journal_flush(journal->j_journal); | |
320 | jbd2_journal_unlock_updates(journal->j_journal); | |
ccd979bd MF |
321 | if (status < 0) { |
322 | up_write(&journal->j_trans_barrier); | |
323 | mlog_errno(status); | |
324 | goto finally; | |
325 | } | |
326 | ||
f9c57ada | 327 | ocfs2_inc_trans_id(journal); |
ccd979bd MF |
328 | |
329 | flushed = atomic_read(&journal->j_num_trans); | |
330 | atomic_set(&journal->j_num_trans, 0); | |
331 | up_write(&journal->j_trans_barrier); | |
332 | ||
b4107950 | 333 | trace_ocfs2_commit_cache_end(journal->j_trans_id, flushed); |
ccd979bd | 334 | |
34d024f8 | 335 | ocfs2_wake_downconvert_thread(osb); |
ccd979bd MF |
336 | wake_up(&journal->j_checkpointed); |
337 | finally: | |
ccd979bd MF |
338 | return status; |
339 | } | |
340 | ||
1fabe148 | 341 | handle_t *ocfs2_start_trans(struct ocfs2_super *osb, int max_buffs) |
ccd979bd | 342 | { |
ccd979bd | 343 | journal_t *journal = osb->journal->j_journal; |
1fabe148 | 344 | handle_t *handle; |
ccd979bd | 345 | |
ebdec83b | 346 | BUG_ON(!osb || !osb->journal->j_journal); |
ccd979bd | 347 | |
65eff9cc MF |
348 | if (ocfs2_is_hard_readonly(osb)) |
349 | return ERR_PTR(-EROFS); | |
ccd979bd MF |
350 | |
351 | BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE); | |
352 | BUG_ON(max_buffs <= 0); | |
353 | ||
90e86a63 JK |
354 | /* Nested transaction? Just return the handle... */ |
355 | if (journal_current_handle()) | |
356 | return jbd2_journal_start(journal, max_buffs); | |
ccd979bd | 357 | |
fef6925c JK |
358 | sb_start_intwrite(osb->sb); |
359 | ||
ccd979bd MF |
360 | down_read(&osb->journal->j_trans_barrier); |
361 | ||
2b4e30fb | 362 | handle = jbd2_journal_start(journal, max_buffs); |
1fabe148 | 363 | if (IS_ERR(handle)) { |
ccd979bd | 364 | up_read(&osb->journal->j_trans_barrier); |
fef6925c | 365 | sb_end_intwrite(osb->sb); |
ccd979bd | 366 | |
1fabe148 | 367 | mlog_errno(PTR_ERR(handle)); |
ccd979bd MF |
368 | |
369 | if (is_journal_aborted(journal)) { | |
370 | ocfs2_abort(osb->sb, "Detected aborted journal"); | |
1fabe148 | 371 | handle = ERR_PTR(-EROFS); |
ccd979bd | 372 | } |
c271c5c2 SM |
373 | } else { |
374 | if (!ocfs2_mount_local(osb)) | |
375 | atomic_inc(&(osb->journal->j_num_trans)); | |
376 | } | |
ccd979bd | 377 | |
ccd979bd | 378 | return handle; |
ccd979bd MF |
379 | } |
380 | ||
1fabe148 MF |
381 | int ocfs2_commit_trans(struct ocfs2_super *osb, |
382 | handle_t *handle) | |
ccd979bd | 383 | { |
90e86a63 | 384 | int ret, nested; |
02dc1af4 | 385 | struct ocfs2_journal *journal = osb->journal; |
ccd979bd MF |
386 | |
387 | BUG_ON(!handle); | |
388 | ||
90e86a63 | 389 | nested = handle->h_ref > 1; |
2b4e30fb | 390 | ret = jbd2_journal_stop(handle); |
1fabe148 MF |
391 | if (ret < 0) |
392 | mlog_errno(ret); | |
ccd979bd | 393 | |
fef6925c | 394 | if (!nested) { |
90e86a63 | 395 | up_read(&journal->j_trans_barrier); |
fef6925c JK |
396 | sb_end_intwrite(osb->sb); |
397 | } | |
ccd979bd | 398 | |
1fabe148 | 399 | return ret; |
ccd979bd MF |
400 | } |
401 | ||
402 | /* | |
c901fb00 | 403 | * 'nblocks' is what you want to add to the current transaction. |
ccd979bd | 404 | * |
2b4e30fb | 405 | * This might call jbd2_journal_restart() which will commit dirty buffers |
e8aed345 MF |
406 | * and then restart the transaction. Before calling |
407 | * ocfs2_extend_trans(), any changed blocks should have been | |
408 | * dirtied. After calling it, all blocks which need to be changed must | |
409 | * go through another set of journal_access/journal_dirty calls. | |
410 | * | |
ccd979bd MF |
411 | * WARNING: This will not release any semaphores or disk locks taken |
412 | * during the transaction, so make sure they were taken *before* | |
413 | * start_trans or we'll have ordering deadlocks. | |
414 | * | |
415 | * WARNING2: Note that we do *not* drop j_trans_barrier here. This is | |
416 | * good because transaction ids haven't yet been recorded on the | |
417 | * cluster locks associated with this handle. | |
418 | */ | |
1fc58146 | 419 | int ocfs2_extend_trans(handle_t *handle, int nblocks) |
ccd979bd | 420 | { |
c901fb00 | 421 | int status, old_nblocks; |
ccd979bd MF |
422 | |
423 | BUG_ON(!handle); | |
c901fb00 | 424 | BUG_ON(nblocks < 0); |
ccd979bd | 425 | |
c901fb00 TM |
426 | if (!nblocks) |
427 | return 0; | |
428 | ||
429 | old_nblocks = handle->h_buffer_credits; | |
ccd979bd | 430 | |
b4107950 | 431 | trace_ocfs2_extend_trans(old_nblocks, nblocks); |
ccd979bd | 432 | |
e407e397 | 433 | #ifdef CONFIG_OCFS2_DEBUG_FS |
0879c584 MF |
434 | status = 1; |
435 | #else | |
2b4e30fb | 436 | status = jbd2_journal_extend(handle, nblocks); |
ccd979bd MF |
437 | if (status < 0) { |
438 | mlog_errno(status); | |
439 | goto bail; | |
440 | } | |
0879c584 | 441 | #endif |
ccd979bd MF |
442 | |
443 | if (status > 0) { | |
b4107950 | 444 | trace_ocfs2_extend_trans_restart(old_nblocks + nblocks); |
c901fb00 TM |
445 | status = jbd2_journal_restart(handle, |
446 | old_nblocks + nblocks); | |
ccd979bd | 447 | if (status < 0) { |
ccd979bd MF |
448 | mlog_errno(status); |
449 | goto bail; | |
450 | } | |
01ddf1e1 | 451 | } |
ccd979bd MF |
452 | |
453 | status = 0; | |
454 | bail: | |
ccd979bd MF |
455 | return status; |
456 | } | |
457 | ||
2b1e55c3 YL |
458 | /* |
459 | * If we have fewer than thresh credits, extend by OCFS2_MAX_TRANS_DATA. | |
460 | * If that fails, restart the transaction & regain write access for the | |
461 | * buffer head which is used for metadata modifications. | |
462 | * Taken from Ext4: extend_or_restart_transaction() | |
463 | */ | |
464 | int ocfs2_allocate_extend_trans(handle_t *handle, int thresh) | |
465 | { | |
466 | int status, old_nblks; | |
467 | ||
468 | BUG_ON(!handle); | |
469 | ||
470 | old_nblks = handle->h_buffer_credits; | |
471 | trace_ocfs2_allocate_extend_trans(old_nblks, thresh); | |
472 | ||
473 | if (old_nblks < thresh) | |
474 | return 0; | |
475 | ||
476 | status = jbd2_journal_extend(handle, OCFS2_MAX_TRANS_DATA); | |
477 | if (status < 0) { | |
478 | mlog_errno(status); | |
479 | goto bail; | |
480 | } | |
481 | ||
482 | if (status > 0) { | |
483 | status = jbd2_journal_restart(handle, OCFS2_MAX_TRANS_DATA); | |
484 | if (status < 0) | |
485 | mlog_errno(status); | |
486 | } | |
487 | ||
488 | bail: | |
489 | return status; | |
490 | } | |
491 | ||
492 | ||
50655ae9 JB |
493 | struct ocfs2_triggers { |
494 | struct jbd2_buffer_trigger_type ot_triggers; | |
495 | int ot_offset; | |
496 | }; | |
497 | ||
498 | static inline struct ocfs2_triggers *to_ocfs2_trigger(struct jbd2_buffer_trigger_type *triggers) | |
499 | { | |
500 | return container_of(triggers, struct ocfs2_triggers, ot_triggers); | |
501 | } | |
502 | ||
13ceef09 | 503 | static void ocfs2_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, |
50655ae9 JB |
504 | struct buffer_head *bh, |
505 | void *data, size_t size) | |
506 | { | |
507 | struct ocfs2_triggers *ot = to_ocfs2_trigger(triggers); | |
508 | ||
509 | /* | |
510 | * We aren't guaranteed to have the superblock here, so we | |
511 | * must unconditionally compute the ecc data. | |
512 | * __ocfs2_journal_access() will only set the triggers if | |
513 | * metaecc is enabled. | |
514 | */ | |
515 | ocfs2_block_check_compute(data, size, data + ot->ot_offset); | |
516 | } | |
517 | ||
518 | /* | |
519 | * Quota blocks have their own trigger because the struct ocfs2_block_check | |
520 | * offset depends on the blocksize. | |
521 | */ | |
13ceef09 | 522 | static void ocfs2_dq_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, |
50655ae9 JB |
523 | struct buffer_head *bh, |
524 | void *data, size_t size) | |
525 | { | |
526 | struct ocfs2_disk_dqtrailer *dqt = | |
527 | ocfs2_block_dqtrailer(size, data); | |
528 | ||
529 | /* | |
530 | * We aren't guaranteed to have the superblock here, so we | |
531 | * must unconditionally compute the ecc data. | |
532 | * __ocfs2_journal_access() will only set the triggers if | |
533 | * metaecc is enabled. | |
534 | */ | |
535 | ocfs2_block_check_compute(data, size, &dqt->dq_check); | |
536 | } | |
537 | ||
c175a518 JB |
538 | /* |
539 | * Directory blocks also have their own trigger because the | |
540 | * struct ocfs2_block_check offset depends on the blocksize. | |
541 | */ | |
13ceef09 | 542 | static void ocfs2_db_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, |
c175a518 JB |
543 | struct buffer_head *bh, |
544 | void *data, size_t size) | |
545 | { | |
546 | struct ocfs2_dir_block_trailer *trailer = | |
547 | ocfs2_dir_trailer_from_size(size, data); | |
548 | ||
549 | /* | |
550 | * We aren't guaranteed to have the superblock here, so we | |
551 | * must unconditionally compute the ecc data. | |
552 | * __ocfs2_journal_access() will only set the triggers if | |
553 | * metaecc is enabled. | |
554 | */ | |
555 | ocfs2_block_check_compute(data, size, &trailer->db_check); | |
556 | } | |
557 | ||
50655ae9 JB |
558 | static void ocfs2_abort_trigger(struct jbd2_buffer_trigger_type *triggers, |
559 | struct buffer_head *bh) | |
560 | { | |
561 | mlog(ML_ERROR, | |
562 | "ocfs2_abort_trigger called by JBD2. bh = 0x%lx, " | |
563 | "bh->b_blocknr = %llu\n", | |
564 | (unsigned long)bh, | |
565 | (unsigned long long)bh->b_blocknr); | |
566 | ||
567 | /* We aren't guaranteed to have the superblock here - but if we | |
568 | * don't, it'll just crash. */ | |
569 | ocfs2_error(bh->b_assoc_map->host->i_sb, | |
570 | "JBD2 has aborted our journal, ocfs2 cannot continue\n"); | |
571 | } | |
572 | ||
573 | static struct ocfs2_triggers di_triggers = { | |
574 | .ot_triggers = { | |
13ceef09 | 575 | .t_frozen = ocfs2_frozen_trigger, |
50655ae9 JB |
576 | .t_abort = ocfs2_abort_trigger, |
577 | }, | |
578 | .ot_offset = offsetof(struct ocfs2_dinode, i_check), | |
579 | }; | |
580 | ||
581 | static struct ocfs2_triggers eb_triggers = { | |
582 | .ot_triggers = { | |
13ceef09 | 583 | .t_frozen = ocfs2_frozen_trigger, |
50655ae9 JB |
584 | .t_abort = ocfs2_abort_trigger, |
585 | }, | |
586 | .ot_offset = offsetof(struct ocfs2_extent_block, h_check), | |
587 | }; | |
588 | ||
93c97087 TM |
589 | static struct ocfs2_triggers rb_triggers = { |
590 | .ot_triggers = { | |
13ceef09 | 591 | .t_frozen = ocfs2_frozen_trigger, |
93c97087 TM |
592 | .t_abort = ocfs2_abort_trigger, |
593 | }, | |
594 | .ot_offset = offsetof(struct ocfs2_refcount_block, rf_check), | |
595 | }; | |
596 | ||
50655ae9 JB |
597 | static struct ocfs2_triggers gd_triggers = { |
598 | .ot_triggers = { | |
13ceef09 | 599 | .t_frozen = ocfs2_frozen_trigger, |
50655ae9 JB |
600 | .t_abort = ocfs2_abort_trigger, |
601 | }, | |
602 | .ot_offset = offsetof(struct ocfs2_group_desc, bg_check), | |
603 | }; | |
604 | ||
c175a518 JB |
605 | static struct ocfs2_triggers db_triggers = { |
606 | .ot_triggers = { | |
13ceef09 | 607 | .t_frozen = ocfs2_db_frozen_trigger, |
c175a518 JB |
608 | .t_abort = ocfs2_abort_trigger, |
609 | }, | |
610 | }; | |
611 | ||
50655ae9 JB |
612 | static struct ocfs2_triggers xb_triggers = { |
613 | .ot_triggers = { | |
13ceef09 | 614 | .t_frozen = ocfs2_frozen_trigger, |
50655ae9 JB |
615 | .t_abort = ocfs2_abort_trigger, |
616 | }, | |
617 | .ot_offset = offsetof(struct ocfs2_xattr_block, xb_check), | |
618 | }; | |
619 | ||
620 | static struct ocfs2_triggers dq_triggers = { | |
621 | .ot_triggers = { | |
13ceef09 | 622 | .t_frozen = ocfs2_dq_frozen_trigger, |
50655ae9 JB |
623 | .t_abort = ocfs2_abort_trigger, |
624 | }, | |
625 | }; | |
626 | ||
9b7895ef MF |
627 | static struct ocfs2_triggers dr_triggers = { |
628 | .ot_triggers = { | |
13ceef09 | 629 | .t_frozen = ocfs2_frozen_trigger, |
9b7895ef MF |
630 | .t_abort = ocfs2_abort_trigger, |
631 | }, | |
632 | .ot_offset = offsetof(struct ocfs2_dx_root_block, dr_check), | |
633 | }; | |
634 | ||
635 | static struct ocfs2_triggers dl_triggers = { | |
636 | .ot_triggers = { | |
13ceef09 | 637 | .t_frozen = ocfs2_frozen_trigger, |
9b7895ef MF |
638 | .t_abort = ocfs2_abort_trigger, |
639 | }, | |
640 | .ot_offset = offsetof(struct ocfs2_dx_leaf, dl_check), | |
641 | }; | |
642 | ||
50655ae9 | 643 | static int __ocfs2_journal_access(handle_t *handle, |
0cf2f763 | 644 | struct ocfs2_caching_info *ci, |
50655ae9 JB |
645 | struct buffer_head *bh, |
646 | struct ocfs2_triggers *triggers, | |
647 | int type) | |
ccd979bd MF |
648 | { |
649 | int status; | |
0cf2f763 JB |
650 | struct ocfs2_super *osb = |
651 | OCFS2_SB(ocfs2_metadata_cache_get_super(ci)); | |
ccd979bd | 652 | |
0cf2f763 | 653 | BUG_ON(!ci || !ci->ci_ops); |
ccd979bd MF |
654 | BUG_ON(!handle); |
655 | BUG_ON(!bh); | |
ccd979bd | 656 | |
b4107950 TM |
657 | trace_ocfs2_journal_access( |
658 | (unsigned long long)ocfs2_metadata_cache_owner(ci), | |
659 | (unsigned long long)bh->b_blocknr, type, bh->b_size); | |
ccd979bd MF |
660 | |
661 | /* we can safely remove this assertion after testing. */ | |
662 | if (!buffer_uptodate(bh)) { | |
663 | mlog(ML_ERROR, "giving me a buffer that's not uptodate!\n"); | |
664 | mlog(ML_ERROR, "b_blocknr=%llu\n", | |
665 | (unsigned long long)bh->b_blocknr); | |
666 | BUG(); | |
667 | } | |
668 | ||
0cf2f763 | 669 | /* Set the current transaction information on the ci so |
ccd979bd | 670 | * that the locking code knows whether it can drop it's locks |
0cf2f763 | 671 | * on this ci or not. We're protected from the commit |
ccd979bd MF |
672 | * thread updating the current transaction id until |
673 | * ocfs2_commit_trans() because ocfs2_start_trans() took | |
674 | * j_trans_barrier for us. */ | |
0cf2f763 | 675 | ocfs2_set_ci_lock_trans(osb->journal, ci); |
ccd979bd | 676 | |
0cf2f763 | 677 | ocfs2_metadata_cache_io_lock(ci); |
ccd979bd MF |
678 | switch (type) { |
679 | case OCFS2_JOURNAL_ACCESS_CREATE: | |
680 | case OCFS2_JOURNAL_ACCESS_WRITE: | |
2b4e30fb | 681 | status = jbd2_journal_get_write_access(handle, bh); |
ccd979bd MF |
682 | break; |
683 | ||
684 | case OCFS2_JOURNAL_ACCESS_UNDO: | |
2b4e30fb | 685 | status = jbd2_journal_get_undo_access(handle, bh); |
ccd979bd MF |
686 | break; |
687 | ||
688 | default: | |
689 | status = -EINVAL; | |
af901ca1 | 690 | mlog(ML_ERROR, "Unknown access type!\n"); |
ccd979bd | 691 | } |
0cf2f763 | 692 | if (!status && ocfs2_meta_ecc(osb) && triggers) |
50655ae9 | 693 | jbd2_journal_set_triggers(bh, &triggers->ot_triggers); |
0cf2f763 | 694 | ocfs2_metadata_cache_io_unlock(ci); |
ccd979bd MF |
695 | |
696 | if (status < 0) | |
697 | mlog(ML_ERROR, "Error %d getting %d access to buffer!\n", | |
698 | status, type); | |
699 | ||
ccd979bd MF |
700 | return status; |
701 | } | |
702 | ||
0cf2f763 JB |
703 | int ocfs2_journal_access_di(handle_t *handle, struct ocfs2_caching_info *ci, |
704 | struct buffer_head *bh, int type) | |
50655ae9 | 705 | { |
0cf2f763 | 706 | return __ocfs2_journal_access(handle, ci, bh, &di_triggers, type); |
50655ae9 JB |
707 | } |
708 | ||
0cf2f763 | 709 | int ocfs2_journal_access_eb(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
710 | struct buffer_head *bh, int type) |
711 | { | |
0cf2f763 | 712 | return __ocfs2_journal_access(handle, ci, bh, &eb_triggers, type); |
50655ae9 JB |
713 | } |
714 | ||
93c97087 TM |
715 | int ocfs2_journal_access_rb(handle_t *handle, struct ocfs2_caching_info *ci, |
716 | struct buffer_head *bh, int type) | |
717 | { | |
718 | return __ocfs2_journal_access(handle, ci, bh, &rb_triggers, | |
719 | type); | |
720 | } | |
721 | ||
0cf2f763 | 722 | int ocfs2_journal_access_gd(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
723 | struct buffer_head *bh, int type) |
724 | { | |
0cf2f763 | 725 | return __ocfs2_journal_access(handle, ci, bh, &gd_triggers, type); |
50655ae9 JB |
726 | } |
727 | ||
0cf2f763 | 728 | int ocfs2_journal_access_db(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
729 | struct buffer_head *bh, int type) |
730 | { | |
0cf2f763 | 731 | return __ocfs2_journal_access(handle, ci, bh, &db_triggers, type); |
50655ae9 JB |
732 | } |
733 | ||
0cf2f763 | 734 | int ocfs2_journal_access_xb(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
735 | struct buffer_head *bh, int type) |
736 | { | |
0cf2f763 | 737 | return __ocfs2_journal_access(handle, ci, bh, &xb_triggers, type); |
50655ae9 JB |
738 | } |
739 | ||
0cf2f763 | 740 | int ocfs2_journal_access_dq(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
741 | struct buffer_head *bh, int type) |
742 | { | |
0cf2f763 | 743 | return __ocfs2_journal_access(handle, ci, bh, &dq_triggers, type); |
50655ae9 JB |
744 | } |
745 | ||
0cf2f763 | 746 | int ocfs2_journal_access_dr(handle_t *handle, struct ocfs2_caching_info *ci, |
9b7895ef MF |
747 | struct buffer_head *bh, int type) |
748 | { | |
0cf2f763 | 749 | return __ocfs2_journal_access(handle, ci, bh, &dr_triggers, type); |
9b7895ef MF |
750 | } |
751 | ||
0cf2f763 | 752 | int ocfs2_journal_access_dl(handle_t *handle, struct ocfs2_caching_info *ci, |
9b7895ef MF |
753 | struct buffer_head *bh, int type) |
754 | { | |
0cf2f763 | 755 | return __ocfs2_journal_access(handle, ci, bh, &dl_triggers, type); |
9b7895ef MF |
756 | } |
757 | ||
0cf2f763 | 758 | int ocfs2_journal_access(handle_t *handle, struct ocfs2_caching_info *ci, |
50655ae9 JB |
759 | struct buffer_head *bh, int type) |
760 | { | |
0cf2f763 | 761 | return __ocfs2_journal_access(handle, ci, bh, NULL, type); |
50655ae9 JB |
762 | } |
763 | ||
ec20cec7 | 764 | void ocfs2_journal_dirty(handle_t *handle, struct buffer_head *bh) |
ccd979bd MF |
765 | { |
766 | int status; | |
767 | ||
b4107950 | 768 | trace_ocfs2_journal_dirty((unsigned long long)bh->b_blocknr); |
ccd979bd | 769 | |
2b4e30fb | 770 | status = jbd2_journal_dirty_metadata(handle, bh); |
ec20cec7 | 771 | BUG_ON(status); |
ccd979bd MF |
772 | } |
773 | ||
2b4e30fb | 774 | #define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * JBD2_DEFAULT_MAX_COMMIT_AGE) |
ccd979bd MF |
775 | |
776 | void ocfs2_set_journal_params(struct ocfs2_super *osb) | |
777 | { | |
778 | journal_t *journal = osb->journal->j_journal; | |
d147b3d6 MF |
779 | unsigned long commit_interval = OCFS2_DEFAULT_COMMIT_INTERVAL; |
780 | ||
781 | if (osb->osb_commit_interval) | |
782 | commit_interval = osb->osb_commit_interval; | |
ccd979bd | 783 | |
a931da6a | 784 | write_lock(&journal->j_state_lock); |
d147b3d6 | 785 | journal->j_commit_interval = commit_interval; |
ccd979bd | 786 | if (osb->s_mount_opt & OCFS2_MOUNT_BARRIER) |
2b4e30fb | 787 | journal->j_flags |= JBD2_BARRIER; |
ccd979bd | 788 | else |
2b4e30fb | 789 | journal->j_flags &= ~JBD2_BARRIER; |
a931da6a | 790 | write_unlock(&journal->j_state_lock); |
ccd979bd MF |
791 | } |
792 | ||
793 | int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty) | |
794 | { | |
795 | int status = -1; | |
796 | struct inode *inode = NULL; /* the journal inode */ | |
797 | journal_t *j_journal = NULL; | |
798 | struct ocfs2_dinode *di = NULL; | |
799 | struct buffer_head *bh = NULL; | |
800 | struct ocfs2_super *osb; | |
e63aecb6 | 801 | int inode_lock = 0; |
ccd979bd | 802 | |
ccd979bd MF |
803 | BUG_ON(!journal); |
804 | ||
805 | osb = journal->j_osb; | |
806 | ||
807 | /* already have the inode for our journal */ | |
808 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
809 | osb->slot_num); | |
810 | if (inode == NULL) { | |
811 | status = -EACCES; | |
812 | mlog_errno(status); | |
813 | goto done; | |
814 | } | |
815 | if (is_bad_inode(inode)) { | |
816 | mlog(ML_ERROR, "access error (bad inode)\n"); | |
817 | iput(inode); | |
818 | inode = NULL; | |
819 | status = -EACCES; | |
820 | goto done; | |
821 | } | |
822 | ||
823 | SET_INODE_JOURNAL(inode); | |
824 | OCFS2_I(inode)->ip_open_count++; | |
825 | ||
6eff5790 MF |
826 | /* Skip recovery waits here - journal inode metadata never |
827 | * changes in a live cluster so it can be considered an | |
828 | * exception to the rule. */ | |
e63aecb6 | 829 | status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); |
ccd979bd MF |
830 | if (status < 0) { |
831 | if (status != -ERESTARTSYS) | |
832 | mlog(ML_ERROR, "Could not get lock on journal!\n"); | |
833 | goto done; | |
834 | } | |
835 | ||
e63aecb6 | 836 | inode_lock = 1; |
ccd979bd MF |
837 | di = (struct ocfs2_dinode *)bh->b_data; |
838 | ||
f17c20dd | 839 | if (i_size_read(inode) < OCFS2_MIN_JOURNAL_SIZE) { |
ccd979bd | 840 | mlog(ML_ERROR, "Journal file size (%lld) is too small!\n", |
f17c20dd | 841 | i_size_read(inode)); |
ccd979bd MF |
842 | status = -EINVAL; |
843 | goto done; | |
844 | } | |
845 | ||
f17c20dd | 846 | trace_ocfs2_journal_init(i_size_read(inode), |
b4107950 TM |
847 | (unsigned long long)inode->i_blocks, |
848 | OCFS2_I(inode)->ip_clusters); | |
ccd979bd MF |
849 | |
850 | /* call the kernels journal init function now */ | |
2b4e30fb | 851 | j_journal = jbd2_journal_init_inode(inode); |
ccd979bd MF |
852 | if (j_journal == NULL) { |
853 | mlog(ML_ERROR, "Linux journal layer error\n"); | |
854 | status = -EINVAL; | |
855 | goto done; | |
856 | } | |
857 | ||
b4107950 | 858 | trace_ocfs2_journal_init_maxlen(j_journal->j_maxlen); |
ccd979bd MF |
859 | |
860 | *dirty = (le32_to_cpu(di->id1.journal1.ij_flags) & | |
861 | OCFS2_JOURNAL_DIRTY_FL); | |
862 | ||
863 | journal->j_journal = j_journal; | |
864 | journal->j_inode = inode; | |
865 | journal->j_bh = bh; | |
866 | ||
867 | ocfs2_set_journal_params(osb); | |
868 | ||
869 | journal->j_state = OCFS2_JOURNAL_LOADED; | |
870 | ||
871 | status = 0; | |
872 | done: | |
873 | if (status < 0) { | |
e63aecb6 MF |
874 | if (inode_lock) |
875 | ocfs2_inode_unlock(inode, 1); | |
a81cb88b | 876 | brelse(bh); |
ccd979bd MF |
877 | if (inode) { |
878 | OCFS2_I(inode)->ip_open_count--; | |
879 | iput(inode); | |
880 | } | |
881 | } | |
882 | ||
ccd979bd MF |
883 | return status; |
884 | } | |
885 | ||
539d8264 SM |
886 | static void ocfs2_bump_recovery_generation(struct ocfs2_dinode *di) |
887 | { | |
888 | le32_add_cpu(&(di->id1.journal1.ij_recovery_generation), 1); | |
889 | } | |
890 | ||
891 | static u32 ocfs2_get_recovery_generation(struct ocfs2_dinode *di) | |
892 | { | |
893 | return le32_to_cpu(di->id1.journal1.ij_recovery_generation); | |
894 | } | |
895 | ||
ccd979bd | 896 | static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, |
539d8264 | 897 | int dirty, int replayed) |
ccd979bd MF |
898 | { |
899 | int status; | |
900 | unsigned int flags; | |
901 | struct ocfs2_journal *journal = osb->journal; | |
902 | struct buffer_head *bh = journal->j_bh; | |
903 | struct ocfs2_dinode *fe; | |
904 | ||
ccd979bd | 905 | fe = (struct ocfs2_dinode *)bh->b_data; |
10995aa2 JB |
906 | |
907 | /* The journal bh on the osb always comes from ocfs2_journal_init() | |
908 | * and was validated there inside ocfs2_inode_lock_full(). It's a | |
909 | * code bug if we mess it up. */ | |
910 | BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); | |
ccd979bd MF |
911 | |
912 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
913 | if (dirty) | |
914 | flags |= OCFS2_JOURNAL_DIRTY_FL; | |
915 | else | |
916 | flags &= ~OCFS2_JOURNAL_DIRTY_FL; | |
917 | fe->id1.journal1.ij_flags = cpu_to_le32(flags); | |
918 | ||
539d8264 SM |
919 | if (replayed) |
920 | ocfs2_bump_recovery_generation(fe); | |
921 | ||
13723d00 | 922 | ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check); |
8cb471e8 | 923 | status = ocfs2_write_block(osb, bh, INODE_CACHE(journal->j_inode)); |
ccd979bd MF |
924 | if (status < 0) |
925 | mlog_errno(status); | |
926 | ||
ccd979bd MF |
927 | return status; |
928 | } | |
929 | ||
930 | /* | |
931 | * If the journal has been kmalloc'd it needs to be freed after this | |
932 | * call. | |
933 | */ | |
934 | void ocfs2_journal_shutdown(struct ocfs2_super *osb) | |
935 | { | |
936 | struct ocfs2_journal *journal = NULL; | |
937 | int status = 0; | |
938 | struct inode *inode = NULL; | |
939 | int num_running_trans = 0; | |
940 | ||
ebdec83b | 941 | BUG_ON(!osb); |
ccd979bd MF |
942 | |
943 | journal = osb->journal; | |
944 | if (!journal) | |
945 | goto done; | |
946 | ||
947 | inode = journal->j_inode; | |
948 | ||
949 | if (journal->j_state != OCFS2_JOURNAL_LOADED) | |
950 | goto done; | |
951 | ||
2b4e30fb | 952 | /* need to inc inode use count - jbd2_journal_destroy will iput. */ |
ccd979bd MF |
953 | if (!igrab(inode)) |
954 | BUG(); | |
955 | ||
956 | num_running_trans = atomic_read(&(osb->journal->j_num_trans)); | |
b4107950 | 957 | trace_ocfs2_journal_shutdown(num_running_trans); |
ccd979bd MF |
958 | |
959 | /* Do a commit_cache here. It will flush our journal, *and* | |
960 | * release any locks that are still held. | |
961 | * set the SHUTDOWN flag and release the trans lock. | |
962 | * the commit thread will take the trans lock for us below. */ | |
963 | journal->j_state = OCFS2_JOURNAL_IN_SHUTDOWN; | |
964 | ||
965 | /* The OCFS2_JOURNAL_IN_SHUTDOWN will signal to commit_cache to not | |
966 | * drop the trans_lock (which we want to hold until we | |
967 | * completely destroy the journal. */ | |
968 | if (osb->commit_task) { | |
969 | /* Wait for the commit thread */ | |
b4107950 | 970 | trace_ocfs2_journal_shutdown_wait(osb->commit_task); |
ccd979bd MF |
971 | kthread_stop(osb->commit_task); |
972 | osb->commit_task = NULL; | |
973 | } | |
974 | ||
975 | BUG_ON(atomic_read(&(osb->journal->j_num_trans)) != 0); | |
976 | ||
c271c5c2 | 977 | if (ocfs2_mount_local(osb)) { |
2b4e30fb JB |
978 | jbd2_journal_lock_updates(journal->j_journal); |
979 | status = jbd2_journal_flush(journal->j_journal); | |
980 | jbd2_journal_unlock_updates(journal->j_journal); | |
c271c5c2 SM |
981 | if (status < 0) |
982 | mlog_errno(status); | |
983 | } | |
984 | ||
985 | if (status == 0) { | |
986 | /* | |
987 | * Do not toggle if flush was unsuccessful otherwise | |
988 | * will leave dirty metadata in a "clean" journal | |
989 | */ | |
539d8264 | 990 | status = ocfs2_journal_toggle_dirty(osb, 0, 0); |
c271c5c2 SM |
991 | if (status < 0) |
992 | mlog_errno(status); | |
993 | } | |
ccd979bd MF |
994 | |
995 | /* Shutdown the kernel journal system */ | |
2b4e30fb | 996 | jbd2_journal_destroy(journal->j_journal); |
ae0dff68 | 997 | journal->j_journal = NULL; |
ccd979bd MF |
998 | |
999 | OCFS2_I(inode)->ip_open_count--; | |
1000 | ||
1001 | /* unlock our journal */ | |
e63aecb6 | 1002 | ocfs2_inode_unlock(inode, 1); |
ccd979bd MF |
1003 | |
1004 | brelse(journal->j_bh); | |
1005 | journal->j_bh = NULL; | |
1006 | ||
1007 | journal->j_state = OCFS2_JOURNAL_FREE; | |
1008 | ||
1009 | // up_write(&journal->j_trans_barrier); | |
1010 | done: | |
1011 | if (inode) | |
1012 | iput(inode); | |
ccd979bd MF |
1013 | } |
1014 | ||
1015 | static void ocfs2_clear_journal_error(struct super_block *sb, | |
1016 | journal_t *journal, | |
1017 | int slot) | |
1018 | { | |
1019 | int olderr; | |
1020 | ||
2b4e30fb | 1021 | olderr = jbd2_journal_errno(journal); |
ccd979bd MF |
1022 | if (olderr) { |
1023 | mlog(ML_ERROR, "File system error %d recorded in " | |
1024 | "journal %u.\n", olderr, slot); | |
1025 | mlog(ML_ERROR, "File system on device %s needs checking.\n", | |
1026 | sb->s_id); | |
1027 | ||
2b4e30fb JB |
1028 | jbd2_journal_ack_err(journal); |
1029 | jbd2_journal_clear_err(journal); | |
ccd979bd MF |
1030 | } |
1031 | } | |
1032 | ||
539d8264 | 1033 | int ocfs2_journal_load(struct ocfs2_journal *journal, int local, int replayed) |
ccd979bd MF |
1034 | { |
1035 | int status = 0; | |
1036 | struct ocfs2_super *osb; | |
1037 | ||
b1f3550f | 1038 | BUG_ON(!journal); |
ccd979bd MF |
1039 | |
1040 | osb = journal->j_osb; | |
1041 | ||
2b4e30fb | 1042 | status = jbd2_journal_load(journal->j_journal); |
ccd979bd MF |
1043 | if (status < 0) { |
1044 | mlog(ML_ERROR, "Failed to load journal!\n"); | |
1045 | goto done; | |
1046 | } | |
1047 | ||
1048 | ocfs2_clear_journal_error(osb->sb, journal->j_journal, osb->slot_num); | |
1049 | ||
539d8264 | 1050 | status = ocfs2_journal_toggle_dirty(osb, 1, replayed); |
ccd979bd MF |
1051 | if (status < 0) { |
1052 | mlog_errno(status); | |
1053 | goto done; | |
1054 | } | |
1055 | ||
1056 | /* Launch the commit thread */ | |
c271c5c2 SM |
1057 | if (!local) { |
1058 | osb->commit_task = kthread_run(ocfs2_commit_thread, osb, | |
1059 | "ocfs2cmt"); | |
1060 | if (IS_ERR(osb->commit_task)) { | |
1061 | status = PTR_ERR(osb->commit_task); | |
1062 | osb->commit_task = NULL; | |
1063 | mlog(ML_ERROR, "unable to launch ocfs2commit thread, " | |
1064 | "error=%d", status); | |
1065 | goto done; | |
1066 | } | |
1067 | } else | |
ccd979bd | 1068 | osb->commit_task = NULL; |
ccd979bd MF |
1069 | |
1070 | done: | |
ccd979bd MF |
1071 | return status; |
1072 | } | |
1073 | ||
1074 | ||
1075 | /* 'full' flag tells us whether we clear out all blocks or if we just | |
1076 | * mark the journal clean */ | |
1077 | int ocfs2_journal_wipe(struct ocfs2_journal *journal, int full) | |
1078 | { | |
1079 | int status; | |
1080 | ||
ebdec83b | 1081 | BUG_ON(!journal); |
ccd979bd | 1082 | |
2b4e30fb | 1083 | status = jbd2_journal_wipe(journal->j_journal, full); |
ccd979bd MF |
1084 | if (status < 0) { |
1085 | mlog_errno(status); | |
1086 | goto bail; | |
1087 | } | |
1088 | ||
539d8264 | 1089 | status = ocfs2_journal_toggle_dirty(journal->j_osb, 0, 0); |
ccd979bd MF |
1090 | if (status < 0) |
1091 | mlog_errno(status); | |
1092 | ||
1093 | bail: | |
ccd979bd MF |
1094 | return status; |
1095 | } | |
1096 | ||
553abd04 JB |
1097 | static int ocfs2_recovery_completed(struct ocfs2_super *osb) |
1098 | { | |
1099 | int empty; | |
1100 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
1101 | ||
1102 | spin_lock(&osb->osb_lock); | |
1103 | empty = (rm->rm_used == 0); | |
1104 | spin_unlock(&osb->osb_lock); | |
1105 | ||
1106 | return empty; | |
1107 | } | |
1108 | ||
1109 | void ocfs2_wait_for_recovery(struct ocfs2_super *osb) | |
1110 | { | |
1111 | wait_event(osb->recovery_event, ocfs2_recovery_completed(osb)); | |
1112 | } | |
1113 | ||
ccd979bd MF |
1114 | /* |
1115 | * JBD Might read a cached version of another nodes journal file. We | |
1116 | * don't want this as this file changes often and we get no | |
1117 | * notification on those changes. The only way to be sure that we've | |
1118 | * got the most up to date version of those blocks then is to force | |
1119 | * read them off disk. Just searching through the buffer cache won't | |
1120 | * work as there may be pages backing this file which are still marked | |
1121 | * up to date. We know things can't change on this file underneath us | |
1122 | * as we have the lock by now :) | |
1123 | */ | |
1124 | static int ocfs2_force_read_journal(struct inode *inode) | |
1125 | { | |
1126 | int status = 0; | |
4f902c37 | 1127 | int i; |
8110b073 | 1128 | u64 v_blkno, p_blkno, p_blocks, num_blocks; |
4f902c37 | 1129 | #define CONCURRENT_JOURNAL_FILL 32ULL |
ccd979bd MF |
1130 | struct buffer_head *bhs[CONCURRENT_JOURNAL_FILL]; |
1131 | ||
ccd979bd MF |
1132 | memset(bhs, 0, sizeof(struct buffer_head *) * CONCURRENT_JOURNAL_FILL); |
1133 | ||
f17c20dd | 1134 | num_blocks = ocfs2_blocks_for_bytes(inode->i_sb, i_size_read(inode)); |
ccd979bd | 1135 | v_blkno = 0; |
8110b073 | 1136 | while (v_blkno < num_blocks) { |
ccd979bd | 1137 | status = ocfs2_extent_map_get_blocks(inode, v_blkno, |
49cb8d2d | 1138 | &p_blkno, &p_blocks, NULL); |
ccd979bd MF |
1139 | if (status < 0) { |
1140 | mlog_errno(status); | |
1141 | goto bail; | |
1142 | } | |
1143 | ||
1144 | if (p_blocks > CONCURRENT_JOURNAL_FILL) | |
1145 | p_blocks = CONCURRENT_JOURNAL_FILL; | |
1146 | ||
dd4a2c2b MF |
1147 | /* We are reading journal data which should not |
1148 | * be put in the uptodate cache */ | |
da1e9098 JB |
1149 | status = ocfs2_read_blocks_sync(OCFS2_SB(inode->i_sb), |
1150 | p_blkno, p_blocks, bhs); | |
ccd979bd MF |
1151 | if (status < 0) { |
1152 | mlog_errno(status); | |
1153 | goto bail; | |
1154 | } | |
1155 | ||
1156 | for(i = 0; i < p_blocks; i++) { | |
1157 | brelse(bhs[i]); | |
1158 | bhs[i] = NULL; | |
1159 | } | |
1160 | ||
1161 | v_blkno += p_blocks; | |
1162 | } | |
1163 | ||
1164 | bail: | |
1165 | for(i = 0; i < CONCURRENT_JOURNAL_FILL; i++) | |
a81cb88b | 1166 | brelse(bhs[i]); |
ccd979bd MF |
1167 | return status; |
1168 | } | |
1169 | ||
1170 | struct ocfs2_la_recovery_item { | |
1171 | struct list_head lri_list; | |
1172 | int lri_slot; | |
1173 | struct ocfs2_dinode *lri_la_dinode; | |
1174 | struct ocfs2_dinode *lri_tl_dinode; | |
2205363d | 1175 | struct ocfs2_quota_recovery *lri_qrec; |
ccd979bd MF |
1176 | }; |
1177 | ||
1178 | /* Does the second half of the recovery process. By this point, the | |
1179 | * node is marked clean and can actually be considered recovered, | |
1180 | * hence it's no longer in the recovery map, but there's still some | |
1181 | * cleanup we can do which shouldn't happen within the recovery thread | |
1182 | * as locking in that context becomes very difficult if we are to take | |
1183 | * recovering nodes into account. | |
1184 | * | |
1185 | * NOTE: This function can and will sleep on recovery of other nodes | |
1186 | * during cluster locking, just like any other ocfs2 process. | |
1187 | */ | |
c4028958 | 1188 | void ocfs2_complete_recovery(struct work_struct *work) |
ccd979bd | 1189 | { |
b4107950 | 1190 | int ret = 0; |
c4028958 DH |
1191 | struct ocfs2_journal *journal = |
1192 | container_of(work, struct ocfs2_journal, j_recovery_work); | |
1193 | struct ocfs2_super *osb = journal->j_osb; | |
ccd979bd | 1194 | struct ocfs2_dinode *la_dinode, *tl_dinode; |
800deef3 | 1195 | struct ocfs2_la_recovery_item *item, *n; |
2205363d | 1196 | struct ocfs2_quota_recovery *qrec; |
ccd979bd MF |
1197 | LIST_HEAD(tmp_la_list); |
1198 | ||
b4107950 TM |
1199 | trace_ocfs2_complete_recovery( |
1200 | (unsigned long long)OCFS2_I(journal->j_inode)->ip_blkno); | |
ccd979bd MF |
1201 | |
1202 | spin_lock(&journal->j_lock); | |
1203 | list_splice_init(&journal->j_la_cleanups, &tmp_la_list); | |
1204 | spin_unlock(&journal->j_lock); | |
1205 | ||
800deef3 | 1206 | list_for_each_entry_safe(item, n, &tmp_la_list, lri_list) { |
ccd979bd MF |
1207 | list_del_init(&item->lri_list); |
1208 | ||
19ece546 JK |
1209 | ocfs2_wait_on_quotas(osb); |
1210 | ||
ccd979bd | 1211 | la_dinode = item->lri_la_dinode; |
b4107950 TM |
1212 | tl_dinode = item->lri_tl_dinode; |
1213 | qrec = item->lri_qrec; | |
ccd979bd | 1214 | |
b4107950 TM |
1215 | trace_ocfs2_complete_recovery_slot(item->lri_slot, |
1216 | la_dinode ? le64_to_cpu(la_dinode->i_blkno) : 0, | |
1217 | tl_dinode ? le64_to_cpu(tl_dinode->i_blkno) : 0, | |
1218 | qrec); | |
1219 | ||
1220 | if (la_dinode) { | |
ccd979bd MF |
1221 | ret = ocfs2_complete_local_alloc_recovery(osb, |
1222 | la_dinode); | |
1223 | if (ret < 0) | |
1224 | mlog_errno(ret); | |
1225 | ||
1226 | kfree(la_dinode); | |
1227 | } | |
1228 | ||
ccd979bd | 1229 | if (tl_dinode) { |
ccd979bd MF |
1230 | ret = ocfs2_complete_truncate_log_recovery(osb, |
1231 | tl_dinode); | |
1232 | if (ret < 0) | |
1233 | mlog_errno(ret); | |
1234 | ||
1235 | kfree(tl_dinode); | |
1236 | } | |
1237 | ||
1238 | ret = ocfs2_recover_orphans(osb, item->lri_slot); | |
1239 | if (ret < 0) | |
1240 | mlog_errno(ret); | |
1241 | ||
2205363d | 1242 | if (qrec) { |
2205363d JK |
1243 | ret = ocfs2_finish_quota_recovery(osb, qrec, |
1244 | item->lri_slot); | |
1245 | if (ret < 0) | |
1246 | mlog_errno(ret); | |
1247 | /* Recovery info is already freed now */ | |
1248 | } | |
1249 | ||
ccd979bd MF |
1250 | kfree(item); |
1251 | } | |
1252 | ||
b4107950 | 1253 | trace_ocfs2_complete_recovery_end(ret); |
ccd979bd MF |
1254 | } |
1255 | ||
1256 | /* NOTE: This function always eats your references to la_dinode and | |
1257 | * tl_dinode, either manually on error, or by passing them to | |
1258 | * ocfs2_complete_recovery */ | |
1259 | static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal, | |
1260 | int slot_num, | |
1261 | struct ocfs2_dinode *la_dinode, | |
2205363d JK |
1262 | struct ocfs2_dinode *tl_dinode, |
1263 | struct ocfs2_quota_recovery *qrec) | |
ccd979bd MF |
1264 | { |
1265 | struct ocfs2_la_recovery_item *item; | |
1266 | ||
afae00ab | 1267 | item = kmalloc(sizeof(struct ocfs2_la_recovery_item), GFP_NOFS); |
ccd979bd MF |
1268 | if (!item) { |
1269 | /* Though we wish to avoid it, we are in fact safe in | |
1270 | * skipping local alloc cleanup as fsck.ocfs2 is more | |
1271 | * than capable of reclaiming unused space. */ | |
d787ab09 TG |
1272 | kfree(la_dinode); |
1273 | kfree(tl_dinode); | |
ccd979bd | 1274 | |
2205363d JK |
1275 | if (qrec) |
1276 | ocfs2_free_quota_recovery(qrec); | |
1277 | ||
ccd979bd MF |
1278 | mlog_errno(-ENOMEM); |
1279 | return; | |
1280 | } | |
1281 | ||
1282 | INIT_LIST_HEAD(&item->lri_list); | |
1283 | item->lri_la_dinode = la_dinode; | |
1284 | item->lri_slot = slot_num; | |
1285 | item->lri_tl_dinode = tl_dinode; | |
2205363d | 1286 | item->lri_qrec = qrec; |
ccd979bd MF |
1287 | |
1288 | spin_lock(&journal->j_lock); | |
1289 | list_add_tail(&item->lri_list, &journal->j_la_cleanups); | |
1290 | queue_work(ocfs2_wq, &journal->j_recovery_work); | |
1291 | spin_unlock(&journal->j_lock); | |
1292 | } | |
1293 | ||
1294 | /* Called by the mount code to queue recovery the last part of | |
9140db04 | 1295 | * recovery for it's own and offline slot(s). */ |
ccd979bd MF |
1296 | void ocfs2_complete_mount_recovery(struct ocfs2_super *osb) |
1297 | { | |
1298 | struct ocfs2_journal *journal = osb->journal; | |
1299 | ||
10b3dd76 SM |
1300 | if (ocfs2_is_hard_readonly(osb)) |
1301 | return; | |
1302 | ||
9140db04 SE |
1303 | /* No need to queue up our truncate_log as regular cleanup will catch |
1304 | * that */ | |
1305 | ocfs2_queue_recovery_completion(journal, osb->slot_num, | |
1306 | osb->local_alloc_copy, NULL, NULL); | |
1307 | ocfs2_schedule_truncate_log_flush(osb, 0); | |
ccd979bd | 1308 | |
9140db04 SE |
1309 | osb->local_alloc_copy = NULL; |
1310 | osb->dirty = 0; | |
1311 | ||
1312 | /* queue to recover orphan slots for all offline slots */ | |
1313 | ocfs2_replay_map_set_state(osb, REPLAY_NEEDED); | |
1314 | ocfs2_queue_replay_slots(osb); | |
1315 | ocfs2_free_replay_slots(osb); | |
ccd979bd MF |
1316 | } |
1317 | ||
2205363d JK |
1318 | void ocfs2_complete_quota_recovery(struct ocfs2_super *osb) |
1319 | { | |
1320 | if (osb->quota_rec) { | |
1321 | ocfs2_queue_recovery_completion(osb->journal, | |
1322 | osb->slot_num, | |
1323 | NULL, | |
1324 | NULL, | |
1325 | osb->quota_rec); | |
1326 | osb->quota_rec = NULL; | |
1327 | } | |
1328 | } | |
1329 | ||
ccd979bd MF |
1330 | static int __ocfs2_recovery_thread(void *arg) |
1331 | { | |
2205363d | 1332 | int status, node_num, slot_num; |
ccd979bd | 1333 | struct ocfs2_super *osb = arg; |
553abd04 | 1334 | struct ocfs2_recovery_map *rm = osb->recovery_map; |
2205363d JK |
1335 | int *rm_quota = NULL; |
1336 | int rm_quota_used = 0, i; | |
1337 | struct ocfs2_quota_recovery *qrec; | |
ccd979bd | 1338 | |
ccd979bd MF |
1339 | status = ocfs2_wait_on_mount(osb); |
1340 | if (status < 0) { | |
1341 | goto bail; | |
1342 | } | |
1343 | ||
2205363d JK |
1344 | rm_quota = kzalloc(osb->max_slots * sizeof(int), GFP_NOFS); |
1345 | if (!rm_quota) { | |
1346 | status = -ENOMEM; | |
1347 | goto bail; | |
1348 | } | |
ccd979bd MF |
1349 | restart: |
1350 | status = ocfs2_super_lock(osb, 1); | |
1351 | if (status < 0) { | |
1352 | mlog_errno(status); | |
1353 | goto bail; | |
1354 | } | |
1355 | ||
9140db04 SE |
1356 | status = ocfs2_compute_replay_slots(osb); |
1357 | if (status < 0) | |
1358 | mlog_errno(status); | |
1359 | ||
1360 | /* queue recovery for our own slot */ | |
1361 | ocfs2_queue_recovery_completion(osb->journal, osb->slot_num, NULL, | |
1362 | NULL, NULL); | |
1363 | ||
553abd04 JB |
1364 | spin_lock(&osb->osb_lock); |
1365 | while (rm->rm_used) { | |
1366 | /* It's always safe to remove entry zero, as we won't | |
1367 | * clear it until ocfs2_recover_node() has succeeded. */ | |
1368 | node_num = rm->rm_entries[0]; | |
1369 | spin_unlock(&osb->osb_lock); | |
2205363d | 1370 | slot_num = ocfs2_node_num_to_slot(osb, node_num); |
b4107950 | 1371 | trace_ocfs2_recovery_thread_node(node_num, slot_num); |
2205363d JK |
1372 | if (slot_num == -ENOENT) { |
1373 | status = 0; | |
2205363d JK |
1374 | goto skip_recovery; |
1375 | } | |
2205363d JK |
1376 | |
1377 | /* It is a bit subtle with quota recovery. We cannot do it | |
1378 | * immediately because we have to obtain cluster locks from | |
1379 | * quota files and we also don't want to just skip it because | |
1380 | * then quota usage would be out of sync until some node takes | |
1381 | * the slot. So we remember which nodes need quota recovery | |
1382 | * and when everything else is done, we recover quotas. */ | |
1383 | for (i = 0; i < rm_quota_used && rm_quota[i] != slot_num; i++); | |
1384 | if (i == rm_quota_used) | |
1385 | rm_quota[rm_quota_used++] = slot_num; | |
1386 | ||
1387 | status = ocfs2_recover_node(osb, node_num, slot_num); | |
1388 | skip_recovery: | |
553abd04 JB |
1389 | if (!status) { |
1390 | ocfs2_recovery_map_clear(osb, node_num); | |
1391 | } else { | |
ccd979bd MF |
1392 | mlog(ML_ERROR, |
1393 | "Error %d recovering node %d on device (%u,%u)!\n", | |
1394 | status, node_num, | |
1395 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
1396 | mlog(ML_ERROR, "Volume requires unmount.\n"); | |
ccd979bd MF |
1397 | } |
1398 | ||
553abd04 | 1399 | spin_lock(&osb->osb_lock); |
ccd979bd | 1400 | } |
553abd04 | 1401 | spin_unlock(&osb->osb_lock); |
b4107950 | 1402 | trace_ocfs2_recovery_thread_end(status); |
553abd04 | 1403 | |
539d8264 SM |
1404 | /* Refresh all journal recovery generations from disk */ |
1405 | status = ocfs2_check_journals_nolocks(osb); | |
1406 | status = (status == -EROFS) ? 0 : status; | |
1407 | if (status < 0) | |
1408 | mlog_errno(status); | |
1409 | ||
2205363d | 1410 | /* Now it is right time to recover quotas... We have to do this under |
25985edc | 1411 | * superblock lock so that no one can start using the slot (and crash) |
2205363d JK |
1412 | * before we recover it */ |
1413 | for (i = 0; i < rm_quota_used; i++) { | |
1414 | qrec = ocfs2_begin_quota_recovery(osb, rm_quota[i]); | |
1415 | if (IS_ERR(qrec)) { | |
1416 | status = PTR_ERR(qrec); | |
1417 | mlog_errno(status); | |
1418 | continue; | |
1419 | } | |
1420 | ocfs2_queue_recovery_completion(osb->journal, rm_quota[i], | |
1421 | NULL, NULL, qrec); | |
1422 | } | |
1423 | ||
ccd979bd MF |
1424 | ocfs2_super_unlock(osb, 1); |
1425 | ||
9140db04 SE |
1426 | /* queue recovery for offline slots */ |
1427 | ocfs2_queue_replay_slots(osb); | |
ccd979bd MF |
1428 | |
1429 | bail: | |
c74ec2f7 | 1430 | mutex_lock(&osb->recovery_lock); |
553abd04 | 1431 | if (!status && !ocfs2_recovery_completed(osb)) { |
c74ec2f7 | 1432 | mutex_unlock(&osb->recovery_lock); |
ccd979bd MF |
1433 | goto restart; |
1434 | } | |
1435 | ||
9140db04 | 1436 | ocfs2_free_replay_slots(osb); |
ccd979bd MF |
1437 | osb->recovery_thread_task = NULL; |
1438 | mb(); /* sync with ocfs2_recovery_thread_running */ | |
1439 | wake_up(&osb->recovery_event); | |
1440 | ||
c74ec2f7 | 1441 | mutex_unlock(&osb->recovery_lock); |
ccd979bd | 1442 | |
d787ab09 | 1443 | kfree(rm_quota); |
2205363d | 1444 | |
ccd979bd MF |
1445 | /* no one is callint kthread_stop() for us so the kthread() api |
1446 | * requires that we call do_exit(). And it isn't exported, but | |
1447 | * complete_and_exit() seems to be a minimal wrapper around it. */ | |
1448 | complete_and_exit(NULL, status); | |
1449 | return status; | |
1450 | } | |
1451 | ||
1452 | void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num) | |
1453 | { | |
c74ec2f7 | 1454 | mutex_lock(&osb->recovery_lock); |
ccd979bd | 1455 | |
b4107950 TM |
1456 | trace_ocfs2_recovery_thread(node_num, osb->node_num, |
1457 | osb->disable_recovery, osb->recovery_thread_task, | |
1458 | osb->disable_recovery ? | |
1459 | -1 : ocfs2_recovery_map_set(osb, node_num)); | |
ccd979bd | 1460 | |
b4107950 TM |
1461 | if (osb->disable_recovery) |
1462 | goto out; | |
ccd979bd MF |
1463 | |
1464 | if (osb->recovery_thread_task) | |
1465 | goto out; | |
1466 | ||
1467 | osb->recovery_thread_task = kthread_run(__ocfs2_recovery_thread, osb, | |
78427043 | 1468 | "ocfs2rec"); |
ccd979bd MF |
1469 | if (IS_ERR(osb->recovery_thread_task)) { |
1470 | mlog_errno((int)PTR_ERR(osb->recovery_thread_task)); | |
1471 | osb->recovery_thread_task = NULL; | |
1472 | } | |
1473 | ||
1474 | out: | |
c74ec2f7 | 1475 | mutex_unlock(&osb->recovery_lock); |
ccd979bd | 1476 | wake_up(&osb->recovery_event); |
ccd979bd MF |
1477 | } |
1478 | ||
539d8264 SM |
1479 | static int ocfs2_read_journal_inode(struct ocfs2_super *osb, |
1480 | int slot_num, | |
1481 | struct buffer_head **bh, | |
1482 | struct inode **ret_inode) | |
1483 | { | |
1484 | int status = -EACCES; | |
1485 | struct inode *inode = NULL; | |
1486 | ||
1487 | BUG_ON(slot_num >= osb->max_slots); | |
1488 | ||
1489 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
1490 | slot_num); | |
1491 | if (!inode || is_bad_inode(inode)) { | |
1492 | mlog_errno(status); | |
1493 | goto bail; | |
1494 | } | |
1495 | SET_INODE_JOURNAL(inode); | |
1496 | ||
b657c95c | 1497 | status = ocfs2_read_inode_block_full(inode, bh, OCFS2_BH_IGNORE_CACHE); |
539d8264 SM |
1498 | if (status < 0) { |
1499 | mlog_errno(status); | |
1500 | goto bail; | |
1501 | } | |
1502 | ||
1503 | status = 0; | |
1504 | ||
1505 | bail: | |
1506 | if (inode) { | |
1507 | if (status || !ret_inode) | |
1508 | iput(inode); | |
1509 | else | |
1510 | *ret_inode = inode; | |
1511 | } | |
1512 | return status; | |
1513 | } | |
1514 | ||
ccd979bd MF |
1515 | /* Does the actual journal replay and marks the journal inode as |
1516 | * clean. Will only replay if the journal inode is marked dirty. */ | |
1517 | static int ocfs2_replay_journal(struct ocfs2_super *osb, | |
1518 | int node_num, | |
1519 | int slot_num) | |
1520 | { | |
1521 | int status; | |
1522 | int got_lock = 0; | |
1523 | unsigned int flags; | |
1524 | struct inode *inode = NULL; | |
1525 | struct ocfs2_dinode *fe; | |
1526 | journal_t *journal = NULL; | |
1527 | struct buffer_head *bh = NULL; | |
539d8264 | 1528 | u32 slot_reco_gen; |
ccd979bd | 1529 | |
539d8264 SM |
1530 | status = ocfs2_read_journal_inode(osb, slot_num, &bh, &inode); |
1531 | if (status) { | |
ccd979bd MF |
1532 | mlog_errno(status); |
1533 | goto done; | |
1534 | } | |
539d8264 SM |
1535 | |
1536 | fe = (struct ocfs2_dinode *)bh->b_data; | |
1537 | slot_reco_gen = ocfs2_get_recovery_generation(fe); | |
1538 | brelse(bh); | |
1539 | bh = NULL; | |
1540 | ||
1541 | /* | |
1542 | * As the fs recovery is asynchronous, there is a small chance that | |
1543 | * another node mounted (and recovered) the slot before the recovery | |
1544 | * thread could get the lock. To handle that, we dirty read the journal | |
1545 | * inode for that slot to get the recovery generation. If it is | |
1546 | * different than what we expected, the slot has been recovered. | |
1547 | * If not, it needs recovery. | |
1548 | */ | |
1549 | if (osb->slot_recovery_generations[slot_num] != slot_reco_gen) { | |
b4107950 | 1550 | trace_ocfs2_replay_journal_recovered(slot_num, |
539d8264 SM |
1551 | osb->slot_recovery_generations[slot_num], slot_reco_gen); |
1552 | osb->slot_recovery_generations[slot_num] = slot_reco_gen; | |
1553 | status = -EBUSY; | |
ccd979bd MF |
1554 | goto done; |
1555 | } | |
539d8264 SM |
1556 | |
1557 | /* Continue with recovery as the journal has not yet been recovered */ | |
ccd979bd | 1558 | |
e63aecb6 | 1559 | status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); |
ccd979bd | 1560 | if (status < 0) { |
b4107950 | 1561 | trace_ocfs2_replay_journal_lock_err(status); |
ccd979bd MF |
1562 | if (status != -ERESTARTSYS) |
1563 | mlog(ML_ERROR, "Could not lock journal!\n"); | |
1564 | goto done; | |
1565 | } | |
1566 | got_lock = 1; | |
1567 | ||
1568 | fe = (struct ocfs2_dinode *) bh->b_data; | |
1569 | ||
1570 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
539d8264 | 1571 | slot_reco_gen = ocfs2_get_recovery_generation(fe); |
ccd979bd MF |
1572 | |
1573 | if (!(flags & OCFS2_JOURNAL_DIRTY_FL)) { | |
b4107950 | 1574 | trace_ocfs2_replay_journal_skip(node_num); |
539d8264 SM |
1575 | /* Refresh recovery generation for the slot */ |
1576 | osb->slot_recovery_generations[slot_num] = slot_reco_gen; | |
ccd979bd MF |
1577 | goto done; |
1578 | } | |
1579 | ||
9140db04 SE |
1580 | /* we need to run complete recovery for offline orphan slots */ |
1581 | ocfs2_replay_map_set_state(osb, REPLAY_NEEDED); | |
1582 | ||
619c200d SM |
1583 | printk(KERN_NOTICE "ocfs2: Begin replay journal (node %d, slot %d) on "\ |
1584 | "device (%u,%u)\n", node_num, slot_num, MAJOR(osb->sb->s_dev), | |
1585 | MINOR(osb->sb->s_dev)); | |
ccd979bd MF |
1586 | |
1587 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); | |
1588 | ||
1589 | status = ocfs2_force_read_journal(inode); | |
1590 | if (status < 0) { | |
1591 | mlog_errno(status); | |
1592 | goto done; | |
1593 | } | |
1594 | ||
2b4e30fb | 1595 | journal = jbd2_journal_init_inode(inode); |
ccd979bd MF |
1596 | if (journal == NULL) { |
1597 | mlog(ML_ERROR, "Linux journal layer error\n"); | |
1598 | status = -EIO; | |
1599 | goto done; | |
1600 | } | |
1601 | ||
2b4e30fb | 1602 | status = jbd2_journal_load(journal); |
ccd979bd MF |
1603 | if (status < 0) { |
1604 | mlog_errno(status); | |
1605 | if (!igrab(inode)) | |
1606 | BUG(); | |
2b4e30fb | 1607 | jbd2_journal_destroy(journal); |
ccd979bd MF |
1608 | goto done; |
1609 | } | |
1610 | ||
1611 | ocfs2_clear_journal_error(osb->sb, journal, slot_num); | |
1612 | ||
1613 | /* wipe the journal */ | |
2b4e30fb JB |
1614 | jbd2_journal_lock_updates(journal); |
1615 | status = jbd2_journal_flush(journal); | |
1616 | jbd2_journal_unlock_updates(journal); | |
ccd979bd MF |
1617 | if (status < 0) |
1618 | mlog_errno(status); | |
1619 | ||
1620 | /* This will mark the node clean */ | |
1621 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); | |
1622 | flags &= ~OCFS2_JOURNAL_DIRTY_FL; | |
1623 | fe->id1.journal1.ij_flags = cpu_to_le32(flags); | |
1624 | ||
539d8264 SM |
1625 | /* Increment recovery generation to indicate successful recovery */ |
1626 | ocfs2_bump_recovery_generation(fe); | |
1627 | osb->slot_recovery_generations[slot_num] = | |
1628 | ocfs2_get_recovery_generation(fe); | |
1629 | ||
13723d00 | 1630 | ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check); |
8cb471e8 | 1631 | status = ocfs2_write_block(osb, bh, INODE_CACHE(inode)); |
ccd979bd MF |
1632 | if (status < 0) |
1633 | mlog_errno(status); | |
1634 | ||
1635 | if (!igrab(inode)) | |
1636 | BUG(); | |
1637 | ||
2b4e30fb | 1638 | jbd2_journal_destroy(journal); |
ccd979bd | 1639 | |
619c200d SM |
1640 | printk(KERN_NOTICE "ocfs2: End replay journal (node %d, slot %d) on "\ |
1641 | "device (%u,%u)\n", node_num, slot_num, MAJOR(osb->sb->s_dev), | |
1642 | MINOR(osb->sb->s_dev)); | |
ccd979bd MF |
1643 | done: |
1644 | /* drop the lock on this nodes journal */ | |
1645 | if (got_lock) | |
e63aecb6 | 1646 | ocfs2_inode_unlock(inode, 1); |
ccd979bd MF |
1647 | |
1648 | if (inode) | |
1649 | iput(inode); | |
1650 | ||
a81cb88b | 1651 | brelse(bh); |
ccd979bd | 1652 | |
ccd979bd MF |
1653 | return status; |
1654 | } | |
1655 | ||
1656 | /* | |
1657 | * Do the most important parts of node recovery: | |
1658 | * - Replay it's journal | |
1659 | * - Stamp a clean local allocator file | |
1660 | * - Stamp a clean truncate log | |
1661 | * - Mark the node clean | |
1662 | * | |
1663 | * If this function completes without error, a node in OCFS2 can be | |
1664 | * said to have been safely recovered. As a result, failure during the | |
1665 | * second part of a nodes recovery process (local alloc recovery) is | |
1666 | * far less concerning. | |
1667 | */ | |
1668 | static int ocfs2_recover_node(struct ocfs2_super *osb, | |
2205363d | 1669 | int node_num, int slot_num) |
ccd979bd MF |
1670 | { |
1671 | int status = 0; | |
ccd979bd MF |
1672 | struct ocfs2_dinode *la_copy = NULL; |
1673 | struct ocfs2_dinode *tl_copy = NULL; | |
1674 | ||
b4107950 | 1675 | trace_ocfs2_recover_node(node_num, slot_num, osb->node_num); |
ccd979bd MF |
1676 | |
1677 | /* Should not ever be called to recover ourselves -- in that | |
1678 | * case we should've called ocfs2_journal_load instead. */ | |
ebdec83b | 1679 | BUG_ON(osb->node_num == node_num); |
ccd979bd | 1680 | |
ccd979bd MF |
1681 | status = ocfs2_replay_journal(osb, node_num, slot_num); |
1682 | if (status < 0) { | |
539d8264 | 1683 | if (status == -EBUSY) { |
b4107950 | 1684 | trace_ocfs2_recover_node_skip(slot_num, node_num); |
539d8264 SM |
1685 | status = 0; |
1686 | goto done; | |
1687 | } | |
ccd979bd MF |
1688 | mlog_errno(status); |
1689 | goto done; | |
1690 | } | |
1691 | ||
1692 | /* Stamp a clean local alloc file AFTER recovering the journal... */ | |
1693 | status = ocfs2_begin_local_alloc_recovery(osb, slot_num, &la_copy); | |
1694 | if (status < 0) { | |
1695 | mlog_errno(status); | |
1696 | goto done; | |
1697 | } | |
1698 | ||
1699 | /* An error from begin_truncate_log_recovery is not | |
1700 | * serious enough to warrant halting the rest of | |
1701 | * recovery. */ | |
1702 | status = ocfs2_begin_truncate_log_recovery(osb, slot_num, &tl_copy); | |
1703 | if (status < 0) | |
1704 | mlog_errno(status); | |
1705 | ||
1706 | /* Likewise, this would be a strange but ultimately not so | |
1707 | * harmful place to get an error... */ | |
8e8a4603 | 1708 | status = ocfs2_clear_slot(osb, slot_num); |
ccd979bd MF |
1709 | if (status < 0) |
1710 | mlog_errno(status); | |
1711 | ||
1712 | /* This will kfree the memory pointed to by la_copy and tl_copy */ | |
1713 | ocfs2_queue_recovery_completion(osb->journal, slot_num, la_copy, | |
2205363d | 1714 | tl_copy, NULL); |
ccd979bd MF |
1715 | |
1716 | status = 0; | |
1717 | done: | |
1718 | ||
ccd979bd MF |
1719 | return status; |
1720 | } | |
1721 | ||
1722 | /* Test node liveness by trylocking his journal. If we get the lock, | |
1723 | * we drop it here. Return 0 if we got the lock, -EAGAIN if node is | |
1724 | * still alive (we couldn't get the lock) and < 0 on error. */ | |
1725 | static int ocfs2_trylock_journal(struct ocfs2_super *osb, | |
1726 | int slot_num) | |
1727 | { | |
1728 | int status, flags; | |
1729 | struct inode *inode = NULL; | |
1730 | ||
1731 | inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE, | |
1732 | slot_num); | |
1733 | if (inode == NULL) { | |
1734 | mlog(ML_ERROR, "access error\n"); | |
1735 | status = -EACCES; | |
1736 | goto bail; | |
1737 | } | |
1738 | if (is_bad_inode(inode)) { | |
1739 | mlog(ML_ERROR, "access error (bad inode)\n"); | |
1740 | iput(inode); | |
1741 | inode = NULL; | |
1742 | status = -EACCES; | |
1743 | goto bail; | |
1744 | } | |
1745 | SET_INODE_JOURNAL(inode); | |
1746 | ||
1747 | flags = OCFS2_META_LOCK_RECOVERY | OCFS2_META_LOCK_NOQUEUE; | |
e63aecb6 | 1748 | status = ocfs2_inode_lock_full(inode, NULL, 1, flags); |
ccd979bd MF |
1749 | if (status < 0) { |
1750 | if (status != -EAGAIN) | |
1751 | mlog_errno(status); | |
1752 | goto bail; | |
1753 | } | |
1754 | ||
e63aecb6 | 1755 | ocfs2_inode_unlock(inode, 1); |
ccd979bd MF |
1756 | bail: |
1757 | if (inode) | |
1758 | iput(inode); | |
1759 | ||
1760 | return status; | |
1761 | } | |
1762 | ||
1763 | /* Call this underneath ocfs2_super_lock. It also assumes that the | |
1764 | * slot info struct has been updated from disk. */ | |
1765 | int ocfs2_mark_dead_nodes(struct ocfs2_super *osb) | |
1766 | { | |
d85b20e4 JB |
1767 | unsigned int node_num; |
1768 | int status, i; | |
a1af7d15 | 1769 | u32 gen; |
539d8264 SM |
1770 | struct buffer_head *bh = NULL; |
1771 | struct ocfs2_dinode *di; | |
ccd979bd MF |
1772 | |
1773 | /* This is called with the super block cluster lock, so we | |
1774 | * know that the slot map can't change underneath us. */ | |
1775 | ||
d85b20e4 | 1776 | for (i = 0; i < osb->max_slots; i++) { |
539d8264 SM |
1777 | /* Read journal inode to get the recovery generation */ |
1778 | status = ocfs2_read_journal_inode(osb, i, &bh, NULL); | |
1779 | if (status) { | |
1780 | mlog_errno(status); | |
1781 | goto bail; | |
1782 | } | |
1783 | di = (struct ocfs2_dinode *)bh->b_data; | |
a1af7d15 | 1784 | gen = ocfs2_get_recovery_generation(di); |
539d8264 SM |
1785 | brelse(bh); |
1786 | bh = NULL; | |
1787 | ||
a1af7d15 MF |
1788 | spin_lock(&osb->osb_lock); |
1789 | osb->slot_recovery_generations[i] = gen; | |
1790 | ||
b4107950 TM |
1791 | trace_ocfs2_mark_dead_nodes(i, |
1792 | osb->slot_recovery_generations[i]); | |
539d8264 | 1793 | |
a1af7d15 MF |
1794 | if (i == osb->slot_num) { |
1795 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1796 | continue; |
a1af7d15 | 1797 | } |
d85b20e4 JB |
1798 | |
1799 | status = ocfs2_slot_to_node_num_locked(osb, i, &node_num); | |
a1af7d15 MF |
1800 | if (status == -ENOENT) { |
1801 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1802 | continue; |
a1af7d15 | 1803 | } |
ccd979bd | 1804 | |
a1af7d15 MF |
1805 | if (__ocfs2_recovery_map_test(osb, node_num)) { |
1806 | spin_unlock(&osb->osb_lock); | |
ccd979bd | 1807 | continue; |
a1af7d15 | 1808 | } |
d85b20e4 | 1809 | spin_unlock(&osb->osb_lock); |
ccd979bd MF |
1810 | |
1811 | /* Ok, we have a slot occupied by another node which | |
1812 | * is not in the recovery map. We trylock his journal | |
1813 | * file here to test if he's alive. */ | |
1814 | status = ocfs2_trylock_journal(osb, i); | |
1815 | if (!status) { | |
1816 | /* Since we're called from mount, we know that | |
1817 | * the recovery thread can't race us on | |
1818 | * setting / checking the recovery bits. */ | |
1819 | ocfs2_recovery_thread(osb, node_num); | |
1820 | } else if ((status < 0) && (status != -EAGAIN)) { | |
1821 | mlog_errno(status); | |
1822 | goto bail; | |
1823 | } | |
ccd979bd | 1824 | } |
ccd979bd MF |
1825 | |
1826 | status = 0; | |
1827 | bail: | |
ccd979bd MF |
1828 | return status; |
1829 | } | |
1830 | ||
83273932 SE |
1831 | /* |
1832 | * Scan timer should get fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT. Add some | |
1833 | * randomness to the timeout to minimize multple nodes firing the timer at the | |
1834 | * same time. | |
1835 | */ | |
1836 | static inline unsigned long ocfs2_orphan_scan_timeout(void) | |
1837 | { | |
1838 | unsigned long time; | |
1839 | ||
1840 | get_random_bytes(&time, sizeof(time)); | |
1841 | time = ORPHAN_SCAN_SCHEDULE_TIMEOUT + (time % 5000); | |
1842 | return msecs_to_jiffies(time); | |
1843 | } | |
1844 | ||
1845 | /* | |
1846 | * ocfs2_queue_orphan_scan calls ocfs2_queue_recovery_completion for | |
1847 | * every slot, queuing a recovery of the slot on the ocfs2_wq thread. This | |
1848 | * is done to catch any orphans that are left over in orphan directories. | |
1849 | * | |
a035bff6 SM |
1850 | * It scans all slots, even ones that are in use. It does so to handle the |
1851 | * case described below: | |
1852 | * | |
1853 | * Node 1 has an inode it was using. The dentry went away due to memory | |
1854 | * pressure. Node 1 closes the inode, but it's on the free list. The node | |
1855 | * has the open lock. | |
1856 | * Node 2 unlinks the inode. It grabs the dentry lock to notify others, | |
1857 | * but node 1 has no dentry and doesn't get the message. It trylocks the | |
1858 | * open lock, sees that another node has a PR, and does nothing. | |
1859 | * Later node 2 runs its orphan dir. It igets the inode, trylocks the | |
1860 | * open lock, sees the PR still, and does nothing. | |
1861 | * Basically, we have to trigger an orphan iput on node 1. The only way | |
1862 | * for this to happen is if node 1 runs node 2's orphan dir. | |
1863 | * | |
83273932 SE |
1864 | * ocfs2_queue_orphan_scan gets called every ORPHAN_SCAN_SCHEDULE_TIMEOUT |
1865 | * seconds. It gets an EX lock on os_lockres and checks sequence number | |
1866 | * stored in LVB. If the sequence number has changed, it means some other | |
1867 | * node has done the scan. This node skips the scan and tracks the | |
1868 | * sequence number. If the sequence number didn't change, it means a scan | |
1869 | * hasn't happened. The node queues a scan and increments the | |
1870 | * sequence number in the LVB. | |
1871 | */ | |
1872 | void ocfs2_queue_orphan_scan(struct ocfs2_super *osb) | |
1873 | { | |
1874 | struct ocfs2_orphan_scan *os; | |
1875 | int status, i; | |
1876 | u32 seqno = 0; | |
1877 | ||
1878 | os = &osb->osb_orphan_scan; | |
1879 | ||
692684e1 SM |
1880 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) |
1881 | goto out; | |
1882 | ||
b4107950 TM |
1883 | trace_ocfs2_queue_orphan_scan_begin(os->os_count, os->os_seqno, |
1884 | atomic_read(&os->os_state)); | |
1885 | ||
df152c24 | 1886 | status = ocfs2_orphan_scan_lock(osb, &seqno); |
83273932 SE |
1887 | if (status < 0) { |
1888 | if (status != -EAGAIN) | |
1889 | mlog_errno(status); | |
1890 | goto out; | |
1891 | } | |
1892 | ||
692684e1 SM |
1893 | /* Do no queue the tasks if the volume is being umounted */ |
1894 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) | |
1895 | goto unlock; | |
1896 | ||
83273932 SE |
1897 | if (os->os_seqno != seqno) { |
1898 | os->os_seqno = seqno; | |
1899 | goto unlock; | |
1900 | } | |
1901 | ||
1902 | for (i = 0; i < osb->max_slots; i++) | |
1903 | ocfs2_queue_recovery_completion(osb->journal, i, NULL, NULL, | |
1904 | NULL); | |
1905 | /* | |
1906 | * We queued a recovery on orphan slots, increment the sequence | |
1907 | * number and update LVB so other node will skip the scan for a while | |
1908 | */ | |
1909 | seqno++; | |
15633a22 SE |
1910 | os->os_count++; |
1911 | os->os_scantime = CURRENT_TIME; | |
83273932 | 1912 | unlock: |
df152c24 | 1913 | ocfs2_orphan_scan_unlock(osb, seqno); |
83273932 | 1914 | out: |
b4107950 TM |
1915 | trace_ocfs2_queue_orphan_scan_end(os->os_count, os->os_seqno, |
1916 | atomic_read(&os->os_state)); | |
83273932 SE |
1917 | return; |
1918 | } | |
1919 | ||
1920 | /* Worker task that gets fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT millsec */ | |
1921 | void ocfs2_orphan_scan_work(struct work_struct *work) | |
1922 | { | |
1923 | struct ocfs2_orphan_scan *os; | |
1924 | struct ocfs2_super *osb; | |
1925 | ||
1926 | os = container_of(work, struct ocfs2_orphan_scan, | |
1927 | os_orphan_scan_work.work); | |
1928 | osb = os->os_osb; | |
1929 | ||
1930 | mutex_lock(&os->os_lock); | |
1931 | ocfs2_queue_orphan_scan(osb); | |
692684e1 | 1932 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) |
40f165f4 | 1933 | queue_delayed_work(ocfs2_wq, &os->os_orphan_scan_work, |
692684e1 | 1934 | ocfs2_orphan_scan_timeout()); |
83273932 SE |
1935 | mutex_unlock(&os->os_lock); |
1936 | } | |
1937 | ||
1938 | void ocfs2_orphan_scan_stop(struct ocfs2_super *osb) | |
1939 | { | |
1940 | struct ocfs2_orphan_scan *os; | |
1941 | ||
1942 | os = &osb->osb_orphan_scan; | |
df152c24 SM |
1943 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) { |
1944 | atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE); | |
1945 | mutex_lock(&os->os_lock); | |
1946 | cancel_delayed_work(&os->os_orphan_scan_work); | |
1947 | mutex_unlock(&os->os_lock); | |
1948 | } | |
83273932 SE |
1949 | } |
1950 | ||
df152c24 | 1951 | void ocfs2_orphan_scan_init(struct ocfs2_super *osb) |
83273932 SE |
1952 | { |
1953 | struct ocfs2_orphan_scan *os; | |
1954 | ||
1955 | os = &osb->osb_orphan_scan; | |
1956 | os->os_osb = osb; | |
15633a22 | 1957 | os->os_count = 0; |
3211949f | 1958 | os->os_seqno = 0; |
83273932 | 1959 | mutex_init(&os->os_lock); |
df152c24 | 1960 | INIT_DELAYED_WORK(&os->os_orphan_scan_work, ocfs2_orphan_scan_work); |
8b712cd5 | 1961 | } |
83273932 | 1962 | |
8b712cd5 JM |
1963 | void ocfs2_orphan_scan_start(struct ocfs2_super *osb) |
1964 | { | |
1965 | struct ocfs2_orphan_scan *os; | |
1966 | ||
1967 | os = &osb->osb_orphan_scan; | |
1968 | os->os_scantime = CURRENT_TIME; | |
df152c24 SM |
1969 | if (ocfs2_is_hard_readonly(osb) || ocfs2_mount_local(osb)) |
1970 | atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE); | |
1971 | else { | |
1972 | atomic_set(&os->os_state, ORPHAN_SCAN_ACTIVE); | |
40f165f4 TM |
1973 | queue_delayed_work(ocfs2_wq, &os->os_orphan_scan_work, |
1974 | ocfs2_orphan_scan_timeout()); | |
df152c24 | 1975 | } |
83273932 SE |
1976 | } |
1977 | ||
5eae5b96 | 1978 | struct ocfs2_orphan_filldir_priv { |
3704412b | 1979 | struct dir_context ctx; |
5eae5b96 MF |
1980 | struct inode *head; |
1981 | struct ocfs2_super *osb; | |
1982 | }; | |
1983 | ||
1984 | static int ocfs2_orphan_filldir(void *priv, const char *name, int name_len, | |
1985 | loff_t pos, u64 ino, unsigned type) | |
1986 | { | |
1987 | struct ocfs2_orphan_filldir_priv *p = priv; | |
1988 | struct inode *iter; | |
1989 | ||
1990 | if (name_len == 1 && !strncmp(".", name, 1)) | |
1991 | return 0; | |
1992 | if (name_len == 2 && !strncmp("..", name, 2)) | |
1993 | return 0; | |
1994 | ||
1995 | /* Skip bad inodes so that recovery can continue */ | |
1996 | iter = ocfs2_iget(p->osb, ino, | |
5fa0613e | 1997 | OCFS2_FI_FLAG_ORPHAN_RECOVERY, 0); |
5eae5b96 MF |
1998 | if (IS_ERR(iter)) |
1999 | return 0; | |
2000 | ||
b4107950 | 2001 | trace_ocfs2_orphan_filldir((unsigned long long)OCFS2_I(iter)->ip_blkno); |
5eae5b96 MF |
2002 | /* No locking is required for the next_orphan queue as there |
2003 | * is only ever a single process doing orphan recovery. */ | |
2004 | OCFS2_I(iter)->ip_next_orphan = p->head; | |
2005 | p->head = iter; | |
2006 | ||
2007 | return 0; | |
2008 | } | |
2009 | ||
b4df6ed8 MF |
2010 | static int ocfs2_queue_orphans(struct ocfs2_super *osb, |
2011 | int slot, | |
2012 | struct inode **head) | |
ccd979bd | 2013 | { |
b4df6ed8 | 2014 | int status; |
ccd979bd | 2015 | struct inode *orphan_dir_inode = NULL; |
3704412b AV |
2016 | struct ocfs2_orphan_filldir_priv priv = { |
2017 | .ctx.actor = ocfs2_orphan_filldir, | |
2018 | .osb = osb, | |
2019 | .head = *head | |
2020 | }; | |
ccd979bd MF |
2021 | |
2022 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2023 | ORPHAN_DIR_SYSTEM_INODE, | |
2024 | slot); | |
2025 | if (!orphan_dir_inode) { | |
2026 | status = -ENOENT; | |
2027 | mlog_errno(status); | |
b4df6ed8 | 2028 | return status; |
2bd63216 | 2029 | } |
ccd979bd | 2030 | |
1b1dcc1b | 2031 | mutex_lock(&orphan_dir_inode->i_mutex); |
e63aecb6 | 2032 | status = ocfs2_inode_lock(orphan_dir_inode, NULL, 0); |
ccd979bd | 2033 | if (status < 0) { |
ccd979bd MF |
2034 | mlog_errno(status); |
2035 | goto out; | |
2036 | } | |
ccd979bd | 2037 | |
3704412b | 2038 | status = ocfs2_dir_foreach(orphan_dir_inode, &priv.ctx); |
5eae5b96 MF |
2039 | if (status) { |
2040 | mlog_errno(status); | |
a86370fb | 2041 | goto out_cluster; |
ccd979bd | 2042 | } |
ccd979bd | 2043 | |
5eae5b96 MF |
2044 | *head = priv.head; |
2045 | ||
a86370fb | 2046 | out_cluster: |
e63aecb6 | 2047 | ocfs2_inode_unlock(orphan_dir_inode, 0); |
b4df6ed8 MF |
2048 | out: |
2049 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
ccd979bd | 2050 | iput(orphan_dir_inode); |
b4df6ed8 MF |
2051 | return status; |
2052 | } | |
2053 | ||
2054 | static int ocfs2_orphan_recovery_can_continue(struct ocfs2_super *osb, | |
2055 | int slot) | |
2056 | { | |
2057 | int ret; | |
2058 | ||
2059 | spin_lock(&osb->osb_lock); | |
2060 | ret = !osb->osb_orphan_wipes[slot]; | |
2061 | spin_unlock(&osb->osb_lock); | |
2062 | return ret; | |
2063 | } | |
2064 | ||
2065 | static void ocfs2_mark_recovering_orphan_dir(struct ocfs2_super *osb, | |
2066 | int slot) | |
2067 | { | |
2068 | spin_lock(&osb->osb_lock); | |
2069 | /* Mark ourselves such that new processes in delete_inode() | |
2070 | * know to quit early. */ | |
2071 | ocfs2_node_map_set_bit(osb, &osb->osb_recovering_orphan_dirs, slot); | |
2072 | while (osb->osb_orphan_wipes[slot]) { | |
2073 | /* If any processes are already in the middle of an | |
2074 | * orphan wipe on this dir, then we need to wait for | |
2075 | * them. */ | |
2076 | spin_unlock(&osb->osb_lock); | |
2077 | wait_event_interruptible(osb->osb_wipe_event, | |
2078 | ocfs2_orphan_recovery_can_continue(osb, slot)); | |
2079 | spin_lock(&osb->osb_lock); | |
2080 | } | |
2081 | spin_unlock(&osb->osb_lock); | |
2082 | } | |
2083 | ||
2084 | static void ocfs2_clear_recovering_orphan_dir(struct ocfs2_super *osb, | |
2085 | int slot) | |
2086 | { | |
2087 | ocfs2_node_map_clear_bit(osb, &osb->osb_recovering_orphan_dirs, slot); | |
2088 | } | |
2089 | ||
2090 | /* | |
2091 | * Orphan recovery. Each mounted node has it's own orphan dir which we | |
2092 | * must run during recovery. Our strategy here is to build a list of | |
2093 | * the inodes in the orphan dir and iget/iput them. The VFS does | |
2094 | * (most) of the rest of the work. | |
2095 | * | |
2096 | * Orphan recovery can happen at any time, not just mount so we have a | |
2097 | * couple of extra considerations. | |
2098 | * | |
2099 | * - We grab as many inodes as we can under the orphan dir lock - | |
2100 | * doing iget() outside the orphan dir risks getting a reference on | |
2101 | * an invalid inode. | |
2102 | * - We must be sure not to deadlock with other processes on the | |
2103 | * system wanting to run delete_inode(). This can happen when they go | |
2104 | * to lock the orphan dir and the orphan recovery process attempts to | |
2105 | * iget() inside the orphan dir lock. This can be avoided by | |
2106 | * advertising our state to ocfs2_delete_inode(). | |
2107 | */ | |
2108 | static int ocfs2_recover_orphans(struct ocfs2_super *osb, | |
2109 | int slot) | |
2110 | { | |
2111 | int ret = 0; | |
2112 | struct inode *inode = NULL; | |
2113 | struct inode *iter; | |
2114 | struct ocfs2_inode_info *oi; | |
2115 | ||
b4107950 | 2116 | trace_ocfs2_recover_orphans(slot); |
b4df6ed8 MF |
2117 | |
2118 | ocfs2_mark_recovering_orphan_dir(osb, slot); | |
2119 | ret = ocfs2_queue_orphans(osb, slot, &inode); | |
2120 | ocfs2_clear_recovering_orphan_dir(osb, slot); | |
2121 | ||
2122 | /* Error here should be noted, but we want to continue with as | |
2123 | * many queued inodes as we've got. */ | |
2124 | if (ret) | |
2125 | mlog_errno(ret); | |
ccd979bd MF |
2126 | |
2127 | while (inode) { | |
2128 | oi = OCFS2_I(inode); | |
b4107950 TM |
2129 | trace_ocfs2_recover_orphans_iput( |
2130 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
2131 | |
2132 | iter = oi->ip_next_orphan; | |
2133 | ||
2134 | spin_lock(&oi->ip_lock); | |
34d024f8 MF |
2135 | /* The remote delete code may have set these on the |
2136 | * assumption that the other node would wipe them | |
2137 | * successfully. If they are still in the node's | |
2138 | * orphan dir, we need to reset that state. */ | |
ccd979bd MF |
2139 | oi->ip_flags &= ~(OCFS2_INODE_DELETED|OCFS2_INODE_SKIP_DELETE); |
2140 | ||
2141 | /* Set the proper information to get us going into | |
2142 | * ocfs2_delete_inode. */ | |
2143 | oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED; | |
ccd979bd MF |
2144 | spin_unlock(&oi->ip_lock); |
2145 | ||
2146 | iput(inode); | |
2147 | ||
2148 | inode = iter; | |
2149 | } | |
2150 | ||
b4df6ed8 | 2151 | return ret; |
ccd979bd MF |
2152 | } |
2153 | ||
19ece546 | 2154 | static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota) |
ccd979bd MF |
2155 | { |
2156 | /* This check is good because ocfs2 will wait on our recovery | |
2157 | * thread before changing it to something other than MOUNTED | |
2158 | * or DISABLED. */ | |
2159 | wait_event(osb->osb_mount_event, | |
19ece546 JK |
2160 | (!quota && atomic_read(&osb->vol_state) == VOLUME_MOUNTED) || |
2161 | atomic_read(&osb->vol_state) == VOLUME_MOUNTED_QUOTAS || | |
ccd979bd MF |
2162 | atomic_read(&osb->vol_state) == VOLUME_DISABLED); |
2163 | ||
2164 | /* If there's an error on mount, then we may never get to the | |
2165 | * MOUNTED flag, but this is set right before | |
2166 | * dismount_volume() so we can trust it. */ | |
2167 | if (atomic_read(&osb->vol_state) == VOLUME_DISABLED) { | |
b4107950 | 2168 | trace_ocfs2_wait_on_mount(VOLUME_DISABLED); |
ccd979bd MF |
2169 | mlog(0, "mount error, exiting!\n"); |
2170 | return -EBUSY; | |
2171 | } | |
2172 | ||
2173 | return 0; | |
2174 | } | |
2175 | ||
2176 | static int ocfs2_commit_thread(void *arg) | |
2177 | { | |
2178 | int status; | |
2179 | struct ocfs2_super *osb = arg; | |
2180 | struct ocfs2_journal *journal = osb->journal; | |
2181 | ||
2182 | /* we can trust j_num_trans here because _should_stop() is only set in | |
2183 | * shutdown and nobody other than ourselves should be able to start | |
2184 | * transactions. committing on shutdown might take a few iterations | |
2185 | * as final transactions put deleted inodes on the list */ | |
2186 | while (!(kthread_should_stop() && | |
2187 | atomic_read(&journal->j_num_trans) == 0)) { | |
2188 | ||
745ae8ba MF |
2189 | wait_event_interruptible(osb->checkpoint_event, |
2190 | atomic_read(&journal->j_num_trans) | |
2191 | || kthread_should_stop()); | |
ccd979bd MF |
2192 | |
2193 | status = ocfs2_commit_cache(osb); | |
2194 | if (status < 0) | |
2195 | mlog_errno(status); | |
2196 | ||
2197 | if (kthread_should_stop() && atomic_read(&journal->j_num_trans)){ | |
2198 | mlog(ML_KTHREAD, | |
2199 | "commit_thread: %u transactions pending on " | |
2200 | "shutdown\n", | |
2201 | atomic_read(&journal->j_num_trans)); | |
2202 | } | |
2203 | } | |
2204 | ||
2205 | return 0; | |
2206 | } | |
2207 | ||
539d8264 SM |
2208 | /* Reads all the journal inodes without taking any cluster locks. Used |
2209 | * for hard readonly access to determine whether any journal requires | |
2210 | * recovery. Also used to refresh the recovery generation numbers after | |
2211 | * a journal has been recovered by another node. | |
2212 | */ | |
ccd979bd MF |
2213 | int ocfs2_check_journals_nolocks(struct ocfs2_super *osb) |
2214 | { | |
2215 | int ret = 0; | |
2216 | unsigned int slot; | |
539d8264 | 2217 | struct buffer_head *di_bh = NULL; |
ccd979bd | 2218 | struct ocfs2_dinode *di; |
539d8264 | 2219 | int journal_dirty = 0; |
ccd979bd MF |
2220 | |
2221 | for(slot = 0; slot < osb->max_slots; slot++) { | |
539d8264 SM |
2222 | ret = ocfs2_read_journal_inode(osb, slot, &di_bh, NULL); |
2223 | if (ret) { | |
ccd979bd MF |
2224 | mlog_errno(ret); |
2225 | goto out; | |
2226 | } | |
2227 | ||
2228 | di = (struct ocfs2_dinode *) di_bh->b_data; | |
2229 | ||
539d8264 SM |
2230 | osb->slot_recovery_generations[slot] = |
2231 | ocfs2_get_recovery_generation(di); | |
2232 | ||
ccd979bd MF |
2233 | if (le32_to_cpu(di->id1.journal1.ij_flags) & |
2234 | OCFS2_JOURNAL_DIRTY_FL) | |
539d8264 | 2235 | journal_dirty = 1; |
ccd979bd MF |
2236 | |
2237 | brelse(di_bh); | |
539d8264 | 2238 | di_bh = NULL; |
ccd979bd MF |
2239 | } |
2240 | ||
2241 | out: | |
539d8264 SM |
2242 | if (journal_dirty) |
2243 | ret = -EROFS; | |
ccd979bd MF |
2244 | return ret; |
2245 | } |