1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * journal.c |
4 | * |
5 | * Defines functions of journalling api |
6 | * |
7 | * Copyright (C) 2003, 2004 Oracle. All rights reserved. |
8 | */ |
9 | |
10 | #include <linux/fs.h> |
11 | #include <linux/types.h> |
12 | #include <linux/slab.h> |
13 | #include <linux/highmem.h> |
14 | #include <linux/kthread.h> |
15 | #include <linux/time.h> |
16 | #include <linux/random.h> |
17 | #include <linux/delay.h> |
18 | #include <linux/writeback.h> |
19 | |
20 | #include <cluster/masklog.h> |
21 | |
22 | #include "ocfs2.h" |
23 | |
24 | #include "alloc.h" |
25 | #include "blockcheck.h" |
26 | #include "dir.h" |
27 | #include "dlmglue.h" |
28 | #include "extent_map.h" |
29 | #include "heartbeat.h" |
30 | #include "inode.h" |
31 | #include "journal.h" |
32 | #include "localalloc.h" |
33 | #include "slot_map.h" |
34 | #include "super.h" |
35 | #include "sysfile.h" |
36 | #include "uptodate.h" |
37 | #include "quota.h" |
38 | #include "file.h" |
39 | #include "namei.h" |
40 | |
41 | #include "buffer_head_io.h" |
42 | #include "ocfs2_trace.h" |
43 | |
44 | DEFINE_SPINLOCK(trans_inc_lock); |
45 | |
46 | #define ORPHAN_SCAN_SCHEDULE_TIMEOUT 300000 |
47 | |
48 | static int ocfs2_force_read_journal(struct inode *inode); |
49 | static int ocfs2_recover_node(struct ocfs2_super *osb, |
50 | int node_num, int slot_num); |
51 | static int __ocfs2_recovery_thread(void *arg); |
52 | static int ocfs2_commit_cache(struct ocfs2_super *osb); |
53 | static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota); |
54 | static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, |
55 | int dirty, int replayed); |
56 | static int ocfs2_trylock_journal(struct ocfs2_super *osb, |
57 | int slot_num); |
58 | static int ocfs2_recover_orphans(struct ocfs2_super *osb, |
59 | int slot, |
60 | enum ocfs2_orphan_reco_type orphan_reco_type); |
61 | static int ocfs2_commit_thread(void *arg); |
62 | static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal, |
63 | int slot_num, |
64 | struct ocfs2_dinode *la_dinode, |
65 | struct ocfs2_dinode *tl_dinode, |
66 | struct ocfs2_quota_recovery *qrec, |
67 | enum ocfs2_orphan_reco_type orphan_reco_type); |
68 | |
69 | static inline int ocfs2_wait_on_mount(struct ocfs2_super *osb) |
70 | { |
71 | return __ocfs2_wait_on_mount(osb, quota: 0); |
72 | } |
73 | |
74 | static inline int ocfs2_wait_on_quotas(struct ocfs2_super *osb) |
75 | { |
76 | return __ocfs2_wait_on_mount(osb, quota: 1); |
77 | } |
78 | |
79 | /* |
80 | * This replay_map is to track online/offline slots, so we could recover |
81 | * offline slots during recovery and mount |
82 | */ |
83 | |
84 | enum ocfs2_replay_state { |
85 | REPLAY_UNNEEDED = 0, /* Replay is not needed, so ignore this map */ |
86 | REPLAY_NEEDED, /* Replay slots marked in rm_replay_slots */ |
87 | REPLAY_DONE /* Replay was already queued */ |
88 | }; |
89 | |
90 | struct ocfs2_replay_map { |
91 | unsigned int rm_slots; |
92 | enum ocfs2_replay_state rm_state; |
93 | unsigned char rm_replay_slots[] __counted_by(rm_slots); |
94 | }; |
95 | |
96 | static void ocfs2_replay_map_set_state(struct ocfs2_super *osb, int state) |
97 | { |
98 | if (!osb->replay_map) |
99 | return; |
100 | |
101 | /* If we've already queued the replay, we don't have any more to do */ |
102 | if (osb->replay_map->rm_state == REPLAY_DONE) |
103 | return; |
104 | |
105 | osb->replay_map->rm_state = state; |
106 | } |
107 | |
108 | int ocfs2_compute_replay_slots(struct ocfs2_super *osb) |
109 | { |
110 | struct ocfs2_replay_map *replay_map; |
111 | int i, node_num; |
112 | |
113 | /* If replay map is already set, we don't do it again */ |
114 | if (osb->replay_map) |
115 | return 0; |
116 | |
117 | replay_map = kzalloc(struct_size(replay_map, rm_replay_slots, |
118 | osb->max_slots), |
119 | GFP_KERNEL); |
120 | if (!replay_map) { |
121 | mlog_errno(-ENOMEM); |
122 | return -ENOMEM; |
123 | } |
124 | |
125 | spin_lock(lock: &osb->osb_lock); |
126 | |
127 | replay_map->rm_slots = osb->max_slots; |
128 | replay_map->rm_state = REPLAY_UNNEEDED; |
129 | |
130 | /* set rm_replay_slots for offline slot(s) */ |
131 | for (i = 0; i < replay_map->rm_slots; i++) { |
132 | if (ocfs2_slot_to_node_num_locked(osb, slot_num: i, node_num: &node_num) == -ENOENT) |
133 | replay_map->rm_replay_slots[i] = 1; |
134 | } |
135 | |
136 | osb->replay_map = replay_map; |
137 | spin_unlock(lock: &osb->osb_lock); |
138 | return 0; |
139 | } |
140 | |
141 | static void ocfs2_queue_replay_slots(struct ocfs2_super *osb, |
142 | enum ocfs2_orphan_reco_type orphan_reco_type) |
143 | { |
144 | struct ocfs2_replay_map *replay_map = osb->replay_map; |
145 | int i; |
146 | |
147 | if (!replay_map) |
148 | return; |
149 | |
150 | if (replay_map->rm_state != REPLAY_NEEDED) |
151 | return; |
152 | |
153 | for (i = 0; i < replay_map->rm_slots; i++) |
154 | if (replay_map->rm_replay_slots[i]) |
155 | ocfs2_queue_recovery_completion(journal: osb->journal, slot_num: i, NULL, |
156 | NULL, NULL, |
157 | orphan_reco_type); |
158 | replay_map->rm_state = REPLAY_DONE; |
159 | } |
160 | |
161 | void ocfs2_free_replay_slots(struct ocfs2_super *osb) |
162 | { |
163 | struct ocfs2_replay_map *replay_map = osb->replay_map; |
164 | |
165 | if (!osb->replay_map) |
166 | return; |
167 | |
168 | kfree(objp: replay_map); |
169 | osb->replay_map = NULL; |
170 | } |
171 | |
172 | int ocfs2_recovery_init(struct ocfs2_super *osb) |
173 | { |
174 | struct ocfs2_recovery_map *rm; |
175 | |
176 | mutex_init(&osb->recovery_lock); |
177 | osb->disable_recovery = 0; |
178 | osb->recovery_thread_task = NULL; |
179 | init_waitqueue_head(&osb->recovery_event); |
180 | |
181 | rm = kzalloc(struct_size(rm, rm_entries, osb->max_slots), |
182 | GFP_KERNEL); |
183 | if (!rm) { |
184 | mlog_errno(-ENOMEM); |
185 | return -ENOMEM; |
186 | } |
187 | |
188 | osb->recovery_map = rm; |
189 | |
190 | return 0; |
191 | } |
192 | |
193 | /* we can't grab the goofy sem lock from inside wait_event, so we use |
194 | * memory barriers to make sure that we'll see the null task before |
195 | * being woken up */ |
196 | static int ocfs2_recovery_thread_running(struct ocfs2_super *osb) |
197 | { |
198 | mb(); |
199 | return osb->recovery_thread_task != NULL; |
200 | } |
201 | |
202 | void ocfs2_recovery_exit(struct ocfs2_super *osb) |
203 | { |
204 | struct ocfs2_recovery_map *rm; |
205 | |
206 | /* disable any new recovery threads and wait for any currently |
207 | * running ones to exit. Do this before setting the vol_state. */ |
208 | mutex_lock(&osb->recovery_lock); |
209 | osb->disable_recovery = 1; |
210 | mutex_unlock(lock: &osb->recovery_lock); |
211 | wait_event(osb->recovery_event, !ocfs2_recovery_thread_running(osb)); |
212 | |
213 | /* At this point, we know that no more recovery threads can be |
214 | * launched, so wait for any recovery completion work to |
215 | * complete. */ |
216 | if (osb->ocfs2_wq) |
217 | flush_workqueue(osb->ocfs2_wq); |
218 | |
219 | /* |
220 | * Now that recovery is shut down, and the osb is about to be |
221 | * freed, the osb_lock is not taken here. |
222 | */ |
223 | rm = osb->recovery_map; |
224 | /* XXX: Should we bug if there are dirty entries? */ |
225 | |
226 | kfree(objp: rm); |
227 | } |
228 | |
229 | static int __ocfs2_recovery_map_test(struct ocfs2_super *osb, |
230 | unsigned int node_num) |
231 | { |
232 | int i; |
233 | struct ocfs2_recovery_map *rm = osb->recovery_map; |
234 | |
235 | assert_spin_locked(&osb->osb_lock); |
236 | |
237 | for (i = 0; i < rm->rm_used; i++) { |
238 | if (rm->rm_entries[i] == node_num) |
239 | return 1; |
240 | } |
241 | |
242 | return 0; |
243 | } |
244 | |
245 | /* Behaves like test-and-set. Returns the previous value */ |
246 | static int ocfs2_recovery_map_set(struct ocfs2_super *osb, |
247 | unsigned int node_num) |
248 | { |
249 | struct ocfs2_recovery_map *rm = osb->recovery_map; |
250 | |
251 | spin_lock(lock: &osb->osb_lock); |
252 | if (__ocfs2_recovery_map_test(osb, node_num)) { |
253 | spin_unlock(lock: &osb->osb_lock); |
254 | return 1; |
255 | } |
256 | |
257 | /* XXX: Can this be exploited? Not from o2dlm... */ |
258 | BUG_ON(rm->rm_used >= osb->max_slots); |
259 | |
260 | rm->rm_entries[rm->rm_used] = node_num; |
261 | rm->rm_used++; |
262 | spin_unlock(lock: &osb->osb_lock); |
263 | |
264 | return 0; |
265 | } |
266 | |
267 | static void ocfs2_recovery_map_clear(struct ocfs2_super *osb, |
268 | unsigned int node_num) |
269 | { |
270 | int i; |
271 | struct ocfs2_recovery_map *rm = osb->recovery_map; |
272 | |
273 | spin_lock(lock: &osb->osb_lock); |
274 | |
275 | for (i = 0; i < rm->rm_used; i++) { |
276 | if (rm->rm_entries[i] == node_num) |
277 | break; |
278 | } |
279 | |
280 | if (i < rm->rm_used) { |
281 | /* XXX: be careful with the pointer math */ |
282 | memmove(&(rm->rm_entries[i]), &(rm->rm_entries[i + 1]), |
283 | (rm->rm_used - i - 1) * sizeof(unsigned int)); |
284 | rm->rm_used--; |
285 | } |
286 | |
287 | spin_unlock(lock: &osb->osb_lock); |
288 | } |
289 | |
290 | static int ocfs2_commit_cache(struct ocfs2_super *osb) |
291 | { |
292 | int status = 0; |
293 | unsigned int flushed; |
294 | struct ocfs2_journal *journal = NULL; |
295 | |
296 | journal = osb->journal; |
297 | |
298 | /* Flush all pending commits and checkpoint the journal. */ |
299 | down_write(sem: &journal->j_trans_barrier); |
300 | |
301 | flushed = atomic_read(v: &journal->j_num_trans); |
302 | trace_ocfs2_commit_cache_begin(num: flushed); |
303 | if (flushed == 0) { |
304 | up_write(sem: &journal->j_trans_barrier); |
305 | goto finally; |
306 | } |
307 | |
308 | jbd2_journal_lock_updates(journal->j_journal); |
309 | status = jbd2_journal_flush(journal: journal->j_journal, flags: 0); |
310 | jbd2_journal_unlock_updates(journal->j_journal); |
311 | if (status < 0) { |
312 | up_write(sem: &journal->j_trans_barrier); |
313 | mlog_errno(status); |
314 | goto finally; |
315 | } |
316 | |
317 | ocfs2_inc_trans_id(j: journal); |
318 | |
319 | flushed = atomic_read(v: &journal->j_num_trans); |
320 | atomic_set(v: &journal->j_num_trans, i: 0); |
321 | up_write(sem: &journal->j_trans_barrier); |
322 | |
323 | trace_ocfs2_commit_cache_end(val1: journal->j_trans_id, val2: flushed); |
324 | |
325 | ocfs2_wake_downconvert_thread(osb); |
326 | wake_up(&journal->j_checkpointed); |
327 | finally: |
328 | return status; |
329 | } |
330 | |
331 | handle_t *ocfs2_start_trans(struct ocfs2_super *osb, int max_buffs) |
332 | { |
333 | journal_t *journal = osb->journal->j_journal; |
334 | handle_t *handle; |
335 | |
336 | BUG_ON(!osb || !osb->journal->j_journal); |
337 | |
338 | if (ocfs2_is_hard_readonly(osb)) |
339 | return ERR_PTR(error: -EROFS); |
340 | |
341 | BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE); |
342 | BUG_ON(max_buffs <= 0); |
343 | |
344 | /* Nested transaction? Just return the handle... */ |
345 | if (journal_current_handle()) |
346 | return jbd2_journal_start(journal, nblocks: max_buffs); |
347 | |
348 | sb_start_intwrite(sb: osb->sb); |
349 | |
350 | down_read(sem: &osb->journal->j_trans_barrier); |
351 | |
352 | handle = jbd2_journal_start(journal, nblocks: max_buffs); |
353 | if (IS_ERR(ptr: handle)) { |
354 | up_read(sem: &osb->journal->j_trans_barrier); |
355 | sb_end_intwrite(sb: osb->sb); |
356 | |
357 | mlog_errno(PTR_ERR(handle)); |
358 | |
359 | if (is_journal_aborted(journal)) { |
360 | ocfs2_abort(osb->sb, "Detected aborted journal\n" ); |
361 | handle = ERR_PTR(error: -EROFS); |
362 | } |
363 | } else { |
364 | if (!ocfs2_mount_local(osb)) |
365 | atomic_inc(v: &(osb->journal->j_num_trans)); |
366 | } |
367 | |
368 | return handle; |
369 | } |
370 | |
371 | int ocfs2_commit_trans(struct ocfs2_super *osb, |
372 | handle_t *handle) |
373 | { |
374 | int ret, nested; |
375 | struct ocfs2_journal *journal = osb->journal; |
376 | |
377 | BUG_ON(!handle); |
378 | |
379 | nested = handle->h_ref > 1; |
380 | ret = jbd2_journal_stop(handle); |
381 | if (ret < 0) |
382 | mlog_errno(ret); |
383 | |
384 | if (!nested) { |
385 | up_read(sem: &journal->j_trans_barrier); |
386 | sb_end_intwrite(sb: osb->sb); |
387 | } |
388 | |
389 | return ret; |
390 | } |
391 | |
392 | /* |
393 | * 'nblocks' is what you want to add to the current transaction. |
394 | * |
395 | * This might call jbd2_journal_restart() which will commit dirty buffers |
396 | * and then restart the transaction. Before calling |
397 | * ocfs2_extend_trans(), any changed blocks should have been |
398 | * dirtied. After calling it, all blocks which need to be changed must |
399 | * go through another set of journal_access/journal_dirty calls. |
400 | * |
401 | * WARNING: This will not release any semaphores or disk locks taken |
402 | * during the transaction, so make sure they were taken *before* |
403 | * start_trans or we'll have ordering deadlocks. |
404 | * |
405 | * WARNING2: Note that we do *not* drop j_trans_barrier here. This is |
406 | * good because transaction ids haven't yet been recorded on the |
407 | * cluster locks associated with this handle. |
408 | */ |
409 | int ocfs2_extend_trans(handle_t *handle, int nblocks) |
410 | { |
411 | int status, old_nblocks; |
412 | |
413 | BUG_ON(!handle); |
414 | BUG_ON(nblocks < 0); |
415 | |
416 | if (!nblocks) |
417 | return 0; |
418 | |
419 | old_nblocks = jbd2_handle_buffer_credits(handle); |
420 | |
421 | trace_ocfs2_extend_trans(val1: old_nblocks, val2: nblocks); |
422 | |
423 | #ifdef CONFIG_OCFS2_DEBUG_FS |
424 | status = 1; |
425 | #else |
426 | status = jbd2_journal_extend(handle, nblocks, 0); |
427 | if (status < 0) { |
428 | mlog_errno(status); |
429 | goto bail; |
430 | } |
431 | #endif |
432 | |
433 | if (status > 0) { |
434 | trace_ocfs2_extend_trans_restart(num: old_nblocks + nblocks); |
435 | status = jbd2_journal_restart(handle, |
436 | nblocks: old_nblocks + nblocks); |
437 | if (status < 0) { |
438 | mlog_errno(status); |
439 | goto bail; |
440 | } |
441 | } |
442 | |
443 | status = 0; |
444 | bail: |
445 | return status; |
446 | } |
447 | |
448 | /* |
449 | * If we have fewer than thresh credits, extend by OCFS2_MAX_TRANS_DATA. |
450 | * If that fails, restart the transaction & regain write access for the |
451 | * buffer head which is used for metadata modifications. |
452 | * Taken from Ext4: extend_or_restart_transaction() |
453 | */ |
454 | int ocfs2_allocate_extend_trans(handle_t *handle, int thresh) |
455 | { |
456 | int status, old_nblks; |
457 | |
458 | BUG_ON(!handle); |
459 | |
460 | old_nblks = jbd2_handle_buffer_credits(handle); |
461 | trace_ocfs2_allocate_extend_trans(val1: old_nblks, val2: thresh); |
462 | |
463 | if (old_nblks < thresh) |
464 | return 0; |
465 | |
466 | status = jbd2_journal_extend(handle, OCFS2_MAX_TRANS_DATA, revoke_records: 0); |
467 | if (status < 0) { |
468 | mlog_errno(status); |
469 | goto bail; |
470 | } |
471 | |
472 | if (status > 0) { |
473 | status = jbd2_journal_restart(handle, OCFS2_MAX_TRANS_DATA); |
474 | if (status < 0) |
475 | mlog_errno(status); |
476 | } |
477 | |
478 | bail: |
479 | return status; |
480 | } |
481 | |
482 | |
483 | struct ocfs2_triggers { |
484 | struct jbd2_buffer_trigger_type ot_triggers; |
485 | int ot_offset; |
486 | }; |
487 | |
488 | static inline struct ocfs2_triggers *to_ocfs2_trigger(struct jbd2_buffer_trigger_type *triggers) |
489 | { |
490 | return container_of(triggers, struct ocfs2_triggers, ot_triggers); |
491 | } |
492 | |
493 | static void ocfs2_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, |
494 | struct buffer_head *bh, |
495 | void *data, size_t size) |
496 | { |
497 | struct ocfs2_triggers *ot = to_ocfs2_trigger(triggers); |
498 | |
499 | /* |
500 | * We aren't guaranteed to have the superblock here, so we |
501 | * must unconditionally compute the ecc data. |
502 | * __ocfs2_journal_access() will only set the triggers if |
503 | * metaecc is enabled. |
504 | */ |
505 | ocfs2_block_check_compute(data, blocksize: size, bc: data + ot->ot_offset); |
506 | } |
507 | |
508 | /* |
509 | * Quota blocks have their own trigger because the struct ocfs2_block_check |
510 | * offset depends on the blocksize. |
511 | */ |
512 | static void ocfs2_dq_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, |
513 | struct buffer_head *bh, |
514 | void *data, size_t size) |
515 | { |
516 | struct ocfs2_disk_dqtrailer *dqt = |
517 | ocfs2_block_dqtrailer(blocksize: size, buf: data); |
518 | |
519 | /* |
520 | * We aren't guaranteed to have the superblock here, so we |
521 | * must unconditionally compute the ecc data. |
522 | * __ocfs2_journal_access() will only set the triggers if |
523 | * metaecc is enabled. |
524 | */ |
525 | ocfs2_block_check_compute(data, blocksize: size, bc: &dqt->dq_check); |
526 | } |
527 | |
528 | /* |
529 | * Directory blocks also have their own trigger because the |
530 | * struct ocfs2_block_check offset depends on the blocksize. |
531 | */ |
532 | static void ocfs2_db_frozen_trigger(struct jbd2_buffer_trigger_type *triggers, |
533 | struct buffer_head *bh, |
534 | void *data, size_t size) |
535 | { |
536 | struct ocfs2_dir_block_trailer *trailer = |
537 | ocfs2_dir_trailer_from_size(blocksize: size, data); |
538 | |
539 | /* |
540 | * We aren't guaranteed to have the superblock here, so we |
541 | * must unconditionally compute the ecc data. |
542 | * __ocfs2_journal_access() will only set the triggers if |
543 | * metaecc is enabled. |
544 | */ |
545 | ocfs2_block_check_compute(data, blocksize: size, bc: &trailer->db_check); |
546 | } |
547 | |
548 | static void ocfs2_abort_trigger(struct jbd2_buffer_trigger_type *triggers, |
549 | struct buffer_head *bh) |
550 | { |
551 | mlog(ML_ERROR, |
552 | "ocfs2_abort_trigger called by JBD2. bh = 0x%lx, " |
553 | "bh->b_blocknr = %llu\n" , |
554 | (unsigned long)bh, |
555 | (unsigned long long)bh->b_blocknr); |
556 | |
557 | ocfs2_error(bh->b_assoc_map->host->i_sb, |
558 | "JBD2 has aborted our journal, ocfs2 cannot continue\n" ); |
559 | } |
560 | |
561 | static struct ocfs2_triggers di_triggers = { |
562 | .ot_triggers = { |
563 | .t_frozen = ocfs2_frozen_trigger, |
564 | .t_abort = ocfs2_abort_trigger, |
565 | }, |
566 | .ot_offset = offsetof(struct ocfs2_dinode, i_check), |
567 | }; |
568 | |
569 | static struct ocfs2_triggers eb_triggers = { |
570 | .ot_triggers = { |
571 | .t_frozen = ocfs2_frozen_trigger, |
572 | .t_abort = ocfs2_abort_trigger, |
573 | }, |
574 | .ot_offset = offsetof(struct ocfs2_extent_block, h_check), |
575 | }; |
576 | |
577 | static struct ocfs2_triggers rb_triggers = { |
578 | .ot_triggers = { |
579 | .t_frozen = ocfs2_frozen_trigger, |
580 | .t_abort = ocfs2_abort_trigger, |
581 | }, |
582 | .ot_offset = offsetof(struct ocfs2_refcount_block, rf_check), |
583 | }; |
584 | |
585 | static struct ocfs2_triggers gd_triggers = { |
586 | .ot_triggers = { |
587 | .t_frozen = ocfs2_frozen_trigger, |
588 | .t_abort = ocfs2_abort_trigger, |
589 | }, |
590 | .ot_offset = offsetof(struct ocfs2_group_desc, bg_check), |
591 | }; |
592 | |
593 | static struct ocfs2_triggers db_triggers = { |
594 | .ot_triggers = { |
595 | .t_frozen = ocfs2_db_frozen_trigger, |
596 | .t_abort = ocfs2_abort_trigger, |
597 | }, |
598 | }; |
599 | |
600 | static struct ocfs2_triggers xb_triggers = { |
601 | .ot_triggers = { |
602 | .t_frozen = ocfs2_frozen_trigger, |
603 | .t_abort = ocfs2_abort_trigger, |
604 | }, |
605 | .ot_offset = offsetof(struct ocfs2_xattr_block, xb_check), |
606 | }; |
607 | |
608 | static struct ocfs2_triggers dq_triggers = { |
609 | .ot_triggers = { |
610 | .t_frozen = ocfs2_dq_frozen_trigger, |
611 | .t_abort = ocfs2_abort_trigger, |
612 | }, |
613 | }; |
614 | |
615 | static struct ocfs2_triggers dr_triggers = { |
616 | .ot_triggers = { |
617 | .t_frozen = ocfs2_frozen_trigger, |
618 | .t_abort = ocfs2_abort_trigger, |
619 | }, |
620 | .ot_offset = offsetof(struct ocfs2_dx_root_block, dr_check), |
621 | }; |
622 | |
623 | static struct ocfs2_triggers dl_triggers = { |
624 | .ot_triggers = { |
625 | .t_frozen = ocfs2_frozen_trigger, |
626 | .t_abort = ocfs2_abort_trigger, |
627 | }, |
628 | .ot_offset = offsetof(struct ocfs2_dx_leaf, dl_check), |
629 | }; |
630 | |
631 | static int __ocfs2_journal_access(handle_t *handle, |
632 | struct ocfs2_caching_info *ci, |
633 | struct buffer_head *bh, |
634 | struct ocfs2_triggers *triggers, |
635 | int type) |
636 | { |
637 | int status; |
638 | struct ocfs2_super *osb = |
639 | OCFS2_SB(ocfs2_metadata_cache_get_super(ci)); |
640 | |
641 | BUG_ON(!ci || !ci->ci_ops); |
642 | BUG_ON(!handle); |
643 | BUG_ON(!bh); |
644 | |
645 | trace_ocfs2_journal_access( |
646 | ull: (unsigned long long)ocfs2_metadata_cache_owner(ci), |
647 | ull1: (unsigned long long)bh->b_blocknr, value2: type, value3: bh->b_size); |
648 | |
649 | /* we can safely remove this assertion after testing. */ |
650 | if (!buffer_uptodate(bh)) { |
651 | mlog(ML_ERROR, "giving me a buffer that's not uptodate!\n" ); |
652 | mlog(ML_ERROR, "b_blocknr=%llu, b_state=0x%lx\n" , |
653 | (unsigned long long)bh->b_blocknr, bh->b_state); |
654 | |
655 | lock_buffer(bh); |
656 | /* |
657 | * A previous transaction with a couple of buffer heads fail |
658 | * to checkpoint, so all the bhs are marked as BH_Write_EIO. |
659 | * For current transaction, the bh is just among those error |
660 | * bhs which previous transaction handle. We can't just clear |
661 | * its BH_Write_EIO and reuse directly, since other bhs are |
662 | * not written to disk yet and that will cause metadata |
663 | * inconsistency. So we should set fs read-only to avoid |
664 | * further damage. |
665 | */ |
666 | if (buffer_write_io_error(bh) && !buffer_uptodate(bh)) { |
667 | unlock_buffer(bh); |
668 | return ocfs2_error(osb->sb, "A previous attempt to " |
669 | "write this buffer head failed\n" ); |
670 | } |
671 | unlock_buffer(bh); |
672 | } |
673 | |
674 | /* Set the current transaction information on the ci so |
675 | * that the locking code knows whether it can drop it's locks |
676 | * on this ci or not. We're protected from the commit |
677 | * thread updating the current transaction id until |
678 | * ocfs2_commit_trans() because ocfs2_start_trans() took |
679 | * j_trans_barrier for us. */ |
680 | ocfs2_set_ci_lock_trans(journal: osb->journal, ci); |
681 | |
682 | ocfs2_metadata_cache_io_lock(ci); |
683 | switch (type) { |
684 | case OCFS2_JOURNAL_ACCESS_CREATE: |
685 | case OCFS2_JOURNAL_ACCESS_WRITE: |
686 | status = jbd2_journal_get_write_access(handle, bh); |
687 | break; |
688 | |
689 | case OCFS2_JOURNAL_ACCESS_UNDO: |
690 | status = jbd2_journal_get_undo_access(handle, bh); |
691 | break; |
692 | |
693 | default: |
694 | status = -EINVAL; |
695 | mlog(ML_ERROR, "Unknown access type!\n" ); |
696 | } |
697 | if (!status && ocfs2_meta_ecc(osb) && triggers) |
698 | jbd2_journal_set_triggers(bh, type: &triggers->ot_triggers); |
699 | ocfs2_metadata_cache_io_unlock(ci); |
700 | |
701 | if (status < 0) |
702 | mlog(ML_ERROR, "Error %d getting %d access to buffer!\n" , |
703 | status, type); |
704 | |
705 | return status; |
706 | } |
707 | |
708 | int ocfs2_journal_access_di(handle_t *handle, struct ocfs2_caching_info *ci, |
709 | struct buffer_head *bh, int type) |
710 | { |
711 | return __ocfs2_journal_access(handle, ci, bh, triggers: &di_triggers, type); |
712 | } |
713 | |
714 | int ocfs2_journal_access_eb(handle_t *handle, struct ocfs2_caching_info *ci, |
715 | struct buffer_head *bh, int type) |
716 | { |
717 | return __ocfs2_journal_access(handle, ci, bh, triggers: &eb_triggers, type); |
718 | } |
719 | |
720 | int ocfs2_journal_access_rb(handle_t *handle, struct ocfs2_caching_info *ci, |
721 | struct buffer_head *bh, int type) |
722 | { |
723 | return __ocfs2_journal_access(handle, ci, bh, triggers: &rb_triggers, |
724 | type); |
725 | } |
726 | |
727 | int ocfs2_journal_access_gd(handle_t *handle, struct ocfs2_caching_info *ci, |
728 | struct buffer_head *bh, int type) |
729 | { |
730 | return __ocfs2_journal_access(handle, ci, bh, triggers: &gd_triggers, type); |
731 | } |
732 | |
733 | int ocfs2_journal_access_db(handle_t *handle, struct ocfs2_caching_info *ci, |
734 | struct buffer_head *bh, int type) |
735 | { |
736 | return __ocfs2_journal_access(handle, ci, bh, triggers: &db_triggers, type); |
737 | } |
738 | |
739 | int ocfs2_journal_access_xb(handle_t *handle, struct ocfs2_caching_info *ci, |
740 | struct buffer_head *bh, int type) |
741 | { |
742 | return __ocfs2_journal_access(handle, ci, bh, triggers: &xb_triggers, type); |
743 | } |
744 | |
745 | int ocfs2_journal_access_dq(handle_t *handle, struct ocfs2_caching_info *ci, |
746 | struct buffer_head *bh, int type) |
747 | { |
748 | return __ocfs2_journal_access(handle, ci, bh, triggers: &dq_triggers, type); |
749 | } |
750 | |
751 | int ocfs2_journal_access_dr(handle_t *handle, struct ocfs2_caching_info *ci, |
752 | struct buffer_head *bh, int type) |
753 | { |
754 | return __ocfs2_journal_access(handle, ci, bh, triggers: &dr_triggers, type); |
755 | } |
756 | |
757 | int ocfs2_journal_access_dl(handle_t *handle, struct ocfs2_caching_info *ci, |
758 | struct buffer_head *bh, int type) |
759 | { |
760 | return __ocfs2_journal_access(handle, ci, bh, triggers: &dl_triggers, type); |
761 | } |
762 | |
763 | int ocfs2_journal_access(handle_t *handle, struct ocfs2_caching_info *ci, |
764 | struct buffer_head *bh, int type) |
765 | { |
766 | return __ocfs2_journal_access(handle, ci, bh, NULL, type); |
767 | } |
768 | |
769 | void ocfs2_journal_dirty(handle_t *handle, struct buffer_head *bh) |
770 | { |
771 | int status; |
772 | |
773 | trace_ocfs2_journal_dirty(num: (unsigned long long)bh->b_blocknr); |
774 | |
775 | status = jbd2_journal_dirty_metadata(handle, bh); |
776 | if (status) { |
777 | mlog_errno(status); |
778 | if (!is_handle_aborted(handle)) { |
779 | journal_t *journal = handle->h_transaction->t_journal; |
780 | |
781 | mlog(ML_ERROR, "jbd2_journal_dirty_metadata failed. " |
782 | "Aborting transaction and journal.\n" ); |
783 | handle->h_err = status; |
784 | jbd2_journal_abort_handle(handle); |
785 | jbd2_journal_abort(journal, status); |
786 | ocfs2_abort(bh->b_assoc_map->host->i_sb, |
787 | "Journal already aborted.\n" ); |
788 | } |
789 | } |
790 | } |
791 | |
792 | #define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * JBD2_DEFAULT_MAX_COMMIT_AGE) |
793 | |
794 | void ocfs2_set_journal_params(struct ocfs2_super *osb) |
795 | { |
796 | journal_t *journal = osb->journal->j_journal; |
797 | unsigned long commit_interval = OCFS2_DEFAULT_COMMIT_INTERVAL; |
798 | |
799 | if (osb->osb_commit_interval) |
800 | commit_interval = osb->osb_commit_interval; |
801 | |
802 | write_lock(&journal->j_state_lock); |
803 | journal->j_commit_interval = commit_interval; |
804 | if (osb->s_mount_opt & OCFS2_MOUNT_BARRIER) |
805 | journal->j_flags |= JBD2_BARRIER; |
806 | else |
807 | journal->j_flags &= ~JBD2_BARRIER; |
808 | write_unlock(&journal->j_state_lock); |
809 | } |
810 | |
811 | /* |
812 | * alloc & initialize skeleton for journal structure. |
813 | * ocfs2_journal_init() will make fs have journal ability. |
814 | */ |
815 | int ocfs2_journal_alloc(struct ocfs2_super *osb) |
816 | { |
817 | int status = 0; |
818 | struct ocfs2_journal *journal; |
819 | |
820 | journal = kzalloc(size: sizeof(struct ocfs2_journal), GFP_KERNEL); |
821 | if (!journal) { |
822 | mlog(ML_ERROR, "unable to alloc journal\n" ); |
823 | status = -ENOMEM; |
824 | goto bail; |
825 | } |
826 | osb->journal = journal; |
827 | journal->j_osb = osb; |
828 | |
829 | atomic_set(v: &journal->j_num_trans, i: 0); |
830 | init_rwsem(&journal->j_trans_barrier); |
831 | init_waitqueue_head(&journal->j_checkpointed); |
832 | spin_lock_init(&journal->j_lock); |
833 | journal->j_trans_id = 1UL; |
834 | INIT_LIST_HEAD(list: &journal->j_la_cleanups); |
835 | INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery); |
836 | journal->j_state = OCFS2_JOURNAL_FREE; |
837 | |
838 | bail: |
839 | return status; |
840 | } |
841 | |
842 | static int ocfs2_journal_submit_inode_data_buffers(struct jbd2_inode *jinode) |
843 | { |
844 | struct address_space *mapping = jinode->i_vfs_inode->i_mapping; |
845 | struct writeback_control wbc = { |
846 | .sync_mode = WB_SYNC_ALL, |
847 | .nr_to_write = mapping->nrpages * 2, |
848 | .range_start = jinode->i_dirty_start, |
849 | .range_end = jinode->i_dirty_end, |
850 | }; |
851 | |
852 | return filemap_fdatawrite_wbc(mapping, wbc: &wbc); |
853 | } |
854 | |
855 | int ocfs2_journal_init(struct ocfs2_super *osb, int *dirty) |
856 | { |
857 | int status = -1; |
858 | struct inode *inode = NULL; /* the journal inode */ |
859 | journal_t *j_journal = NULL; |
860 | struct ocfs2_journal *journal = osb->journal; |
861 | struct ocfs2_dinode *di = NULL; |
862 | struct buffer_head *bh = NULL; |
863 | int inode_lock = 0; |
864 | |
865 | BUG_ON(!journal); |
866 | /* already have the inode for our journal */ |
867 | inode = ocfs2_get_system_file_inode(osb, type: JOURNAL_SYSTEM_INODE, |
868 | slot: osb->slot_num); |
869 | if (inode == NULL) { |
870 | status = -EACCES; |
871 | mlog_errno(status); |
872 | goto done; |
873 | } |
874 | if (is_bad_inode(inode)) { |
875 | mlog(ML_ERROR, "access error (bad inode)\n" ); |
876 | iput(inode); |
877 | inode = NULL; |
878 | status = -EACCES; |
879 | goto done; |
880 | } |
881 | |
882 | SET_INODE_JOURNAL(inode); |
883 | OCFS2_I(inode)->ip_open_count++; |
884 | |
885 | /* Skip recovery waits here - journal inode metadata never |
886 | * changes in a live cluster so it can be considered an |
887 | * exception to the rule. */ |
888 | status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); |
889 | if (status < 0) { |
890 | if (status != -ERESTARTSYS) |
891 | mlog(ML_ERROR, "Could not get lock on journal!\n" ); |
892 | goto done; |
893 | } |
894 | |
895 | inode_lock = 1; |
896 | di = (struct ocfs2_dinode *)bh->b_data; |
897 | |
898 | if (i_size_read(inode) < OCFS2_MIN_JOURNAL_SIZE) { |
899 | mlog(ML_ERROR, "Journal file size (%lld) is too small!\n" , |
900 | i_size_read(inode)); |
901 | status = -EINVAL; |
902 | goto done; |
903 | } |
904 | |
905 | trace_ocfs2_journal_init(val1: i_size_read(inode), |
906 | val2: (unsigned long long)inode->i_blocks, |
907 | val3: OCFS2_I(inode)->ip_clusters); |
908 | |
909 | /* call the kernels journal init function now */ |
910 | j_journal = jbd2_journal_init_inode(inode); |
911 | if (IS_ERR(ptr: j_journal)) { |
912 | mlog(ML_ERROR, "Linux journal layer error\n" ); |
913 | status = PTR_ERR(ptr: j_journal); |
914 | goto done; |
915 | } |
916 | |
917 | trace_ocfs2_journal_init_maxlen(num: j_journal->j_total_len); |
918 | |
919 | *dirty = (le32_to_cpu(di->id1.journal1.ij_flags) & |
920 | OCFS2_JOURNAL_DIRTY_FL); |
921 | |
922 | journal->j_journal = j_journal; |
923 | journal->j_journal->j_submit_inode_data_buffers = |
924 | ocfs2_journal_submit_inode_data_buffers; |
925 | journal->j_journal->j_finish_inode_data_buffers = |
926 | jbd2_journal_finish_inode_data_buffers; |
927 | journal->j_inode = inode; |
928 | journal->j_bh = bh; |
929 | |
930 | ocfs2_set_journal_params(osb); |
931 | |
932 | journal->j_state = OCFS2_JOURNAL_LOADED; |
933 | |
934 | status = 0; |
935 | done: |
936 | if (status < 0) { |
937 | if (inode_lock) |
938 | ocfs2_inode_unlock(inode, ex: 1); |
939 | brelse(bh); |
940 | if (inode) { |
941 | OCFS2_I(inode)->ip_open_count--; |
942 | iput(inode); |
943 | } |
944 | } |
945 | |
946 | return status; |
947 | } |
948 | |
949 | static void ocfs2_bump_recovery_generation(struct ocfs2_dinode *di) |
950 | { |
951 | le32_add_cpu(var: &(di->id1.journal1.ij_recovery_generation), val: 1); |
952 | } |
953 | |
954 | static u32 ocfs2_get_recovery_generation(struct ocfs2_dinode *di) |
955 | { |
956 | return le32_to_cpu(di->id1.journal1.ij_recovery_generation); |
957 | } |
958 | |
959 | static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb, |
960 | int dirty, int replayed) |
961 | { |
962 | int status; |
963 | unsigned int flags; |
964 | struct ocfs2_journal *journal = osb->journal; |
965 | struct buffer_head *bh = journal->j_bh; |
966 | struct ocfs2_dinode *fe; |
967 | |
968 | fe = (struct ocfs2_dinode *)bh->b_data; |
969 | |
970 | /* The journal bh on the osb always comes from ocfs2_journal_init() |
971 | * and was validated there inside ocfs2_inode_lock_full(). It's a |
972 | * code bug if we mess it up. */ |
973 | BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); |
974 | |
975 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); |
976 | if (dirty) |
977 | flags |= OCFS2_JOURNAL_DIRTY_FL; |
978 | else |
979 | flags &= ~OCFS2_JOURNAL_DIRTY_FL; |
980 | fe->id1.journal1.ij_flags = cpu_to_le32(flags); |
981 | |
982 | if (replayed) |
983 | ocfs2_bump_recovery_generation(di: fe); |
984 | |
985 | ocfs2_compute_meta_ecc(sb: osb->sb, data: bh->b_data, bc: &fe->i_check); |
986 | status = ocfs2_write_block(osb, bh, ci: INODE_CACHE(inode: journal->j_inode)); |
987 | if (status < 0) |
988 | mlog_errno(status); |
989 | |
990 | return status; |
991 | } |
992 | |
993 | /* |
994 | * If the journal has been kmalloc'd it needs to be freed after this |
995 | * call. |
996 | */ |
997 | void ocfs2_journal_shutdown(struct ocfs2_super *osb) |
998 | { |
999 | struct ocfs2_journal *journal = NULL; |
1000 | int status = 0; |
1001 | struct inode *inode = NULL; |
1002 | int num_running_trans = 0; |
1003 | |
1004 | BUG_ON(!osb); |
1005 | |
1006 | journal = osb->journal; |
1007 | if (!journal) |
1008 | goto done; |
1009 | |
1010 | inode = journal->j_inode; |
1011 | |
1012 | if (journal->j_state != OCFS2_JOURNAL_LOADED) |
1013 | goto done; |
1014 | |
1015 | /* need to inc inode use count - jbd2_journal_destroy will iput. */ |
1016 | if (!igrab(inode)) |
1017 | BUG(); |
1018 | |
1019 | num_running_trans = atomic_read(v: &(osb->journal->j_num_trans)); |
1020 | trace_ocfs2_journal_shutdown(num: num_running_trans); |
1021 | |
1022 | /* Do a commit_cache here. It will flush our journal, *and* |
1023 | * release any locks that are still held. |
1024 | * set the SHUTDOWN flag and release the trans lock. |
1025 | * the commit thread will take the trans lock for us below. */ |
1026 | journal->j_state = OCFS2_JOURNAL_IN_SHUTDOWN; |
1027 | |
1028 | /* The OCFS2_JOURNAL_IN_SHUTDOWN will signal to commit_cache to not |
1029 | * drop the trans_lock (which we want to hold until we |
1030 | * completely destroy the journal. */ |
1031 | if (osb->commit_task) { |
1032 | /* Wait for the commit thread */ |
1033 | trace_ocfs2_journal_shutdown_wait(pointer: osb->commit_task); |
1034 | kthread_stop(k: osb->commit_task); |
1035 | osb->commit_task = NULL; |
1036 | } |
1037 | |
1038 | BUG_ON(atomic_read(&(osb->journal->j_num_trans)) != 0); |
1039 | |
1040 | if (ocfs2_mount_local(osb)) { |
1041 | jbd2_journal_lock_updates(journal->j_journal); |
1042 | status = jbd2_journal_flush(journal: journal->j_journal, flags: 0); |
1043 | jbd2_journal_unlock_updates(journal->j_journal); |
1044 | if (status < 0) |
1045 | mlog_errno(status); |
1046 | } |
1047 | |
1048 | /* Shutdown the kernel journal system */ |
1049 | if (!jbd2_journal_destroy(journal->j_journal) && !status) { |
1050 | /* |
1051 | * Do not toggle if flush was unsuccessful otherwise |
1052 | * will leave dirty metadata in a "clean" journal |
1053 | */ |
1054 | status = ocfs2_journal_toggle_dirty(osb, dirty: 0, replayed: 0); |
1055 | if (status < 0) |
1056 | mlog_errno(status); |
1057 | } |
1058 | journal->j_journal = NULL; |
1059 | |
1060 | OCFS2_I(inode)->ip_open_count--; |
1061 | |
1062 | /* unlock our journal */ |
1063 | ocfs2_inode_unlock(inode, ex: 1); |
1064 | |
1065 | brelse(bh: journal->j_bh); |
1066 | journal->j_bh = NULL; |
1067 | |
1068 | journal->j_state = OCFS2_JOURNAL_FREE; |
1069 | |
1070 | done: |
1071 | iput(inode); |
1072 | kfree(objp: journal); |
1073 | osb->journal = NULL; |
1074 | } |
1075 | |
1076 | static void ocfs2_clear_journal_error(struct super_block *sb, |
1077 | journal_t *journal, |
1078 | int slot) |
1079 | { |
1080 | int olderr; |
1081 | |
1082 | olderr = jbd2_journal_errno(journal); |
1083 | if (olderr) { |
1084 | mlog(ML_ERROR, "File system error %d recorded in " |
1085 | "journal %u.\n" , olderr, slot); |
1086 | mlog(ML_ERROR, "File system on device %s needs checking.\n" , |
1087 | sb->s_id); |
1088 | |
1089 | jbd2_journal_ack_err(journal); |
1090 | jbd2_journal_clear_err(journal); |
1091 | } |
1092 | } |
1093 | |
1094 | int ocfs2_journal_load(struct ocfs2_journal *journal, int local, int replayed) |
1095 | { |
1096 | int status = 0; |
1097 | struct ocfs2_super *osb; |
1098 | |
1099 | BUG_ON(!journal); |
1100 | |
1101 | osb = journal->j_osb; |
1102 | |
1103 | status = jbd2_journal_load(journal: journal->j_journal); |
1104 | if (status < 0) { |
1105 | mlog(ML_ERROR, "Failed to load journal!\n" ); |
1106 | goto done; |
1107 | } |
1108 | |
1109 | ocfs2_clear_journal_error(sb: osb->sb, journal: journal->j_journal, slot: osb->slot_num); |
1110 | |
1111 | if (replayed) { |
1112 | jbd2_journal_lock_updates(journal->j_journal); |
1113 | status = jbd2_journal_flush(journal: journal->j_journal, flags: 0); |
1114 | jbd2_journal_unlock_updates(journal->j_journal); |
1115 | if (status < 0) |
1116 | mlog_errno(status); |
1117 | } |
1118 | |
1119 | status = ocfs2_journal_toggle_dirty(osb, dirty: 1, replayed); |
1120 | if (status < 0) { |
1121 | mlog_errno(status); |
1122 | goto done; |
1123 | } |
1124 | |
1125 | /* Launch the commit thread */ |
1126 | if (!local) { |
1127 | osb->commit_task = kthread_run(ocfs2_commit_thread, osb, |
1128 | "ocfs2cmt-%s" , osb->uuid_str); |
1129 | if (IS_ERR(ptr: osb->commit_task)) { |
1130 | status = PTR_ERR(ptr: osb->commit_task); |
1131 | osb->commit_task = NULL; |
1132 | mlog(ML_ERROR, "unable to launch ocfs2commit thread, " |
1133 | "error=%d" , status); |
1134 | goto done; |
1135 | } |
1136 | } else |
1137 | osb->commit_task = NULL; |
1138 | |
1139 | done: |
1140 | return status; |
1141 | } |
1142 | |
1143 | |
1144 | /* 'full' flag tells us whether we clear out all blocks or if we just |
1145 | * mark the journal clean */ |
1146 | int ocfs2_journal_wipe(struct ocfs2_journal *journal, int full) |
1147 | { |
1148 | int status; |
1149 | |
1150 | BUG_ON(!journal); |
1151 | |
1152 | status = jbd2_journal_wipe(journal->j_journal, full); |
1153 | if (status < 0) { |
1154 | mlog_errno(status); |
1155 | goto bail; |
1156 | } |
1157 | |
1158 | status = ocfs2_journal_toggle_dirty(osb: journal->j_osb, dirty: 0, replayed: 0); |
1159 | if (status < 0) |
1160 | mlog_errno(status); |
1161 | |
1162 | bail: |
1163 | return status; |
1164 | } |
1165 | |
1166 | static int ocfs2_recovery_completed(struct ocfs2_super *osb) |
1167 | { |
1168 | int empty; |
1169 | struct ocfs2_recovery_map *rm = osb->recovery_map; |
1170 | |
1171 | spin_lock(lock: &osb->osb_lock); |
1172 | empty = (rm->rm_used == 0); |
1173 | spin_unlock(lock: &osb->osb_lock); |
1174 | |
1175 | return empty; |
1176 | } |
1177 | |
1178 | void ocfs2_wait_for_recovery(struct ocfs2_super *osb) |
1179 | { |
1180 | wait_event(osb->recovery_event, ocfs2_recovery_completed(osb)); |
1181 | } |
1182 | |
1183 | /* |
1184 | * JBD Might read a cached version of another nodes journal file. We |
1185 | * don't want this as this file changes often and we get no |
1186 | * notification on those changes. The only way to be sure that we've |
1187 | * got the most up to date version of those blocks then is to force |
1188 | * read them off disk. Just searching through the buffer cache won't |
1189 | * work as there may be pages backing this file which are still marked |
1190 | * up to date. We know things can't change on this file underneath us |
1191 | * as we have the lock by now :) |
1192 | */ |
1193 | static int ocfs2_force_read_journal(struct inode *inode) |
1194 | { |
1195 | int status = 0; |
1196 | int i; |
1197 | u64 v_blkno, p_blkno, p_blocks, num_blocks; |
1198 | struct buffer_head *bh = NULL; |
1199 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
1200 | |
1201 | num_blocks = ocfs2_blocks_for_bytes(sb: inode->i_sb, bytes: i_size_read(inode)); |
1202 | v_blkno = 0; |
1203 | while (v_blkno < num_blocks) { |
1204 | status = ocfs2_extent_map_get_blocks(inode, v_blkno, |
1205 | p_blkno: &p_blkno, ret_count: &p_blocks, NULL); |
1206 | if (status < 0) { |
1207 | mlog_errno(status); |
1208 | goto bail; |
1209 | } |
1210 | |
1211 | for (i = 0; i < p_blocks; i++, p_blkno++) { |
1212 | bh = __find_get_block(bdev: osb->sb->s_bdev, block: p_blkno, |
1213 | size: osb->sb->s_blocksize); |
1214 | /* block not cached. */ |
1215 | if (!bh) |
1216 | continue; |
1217 | |
1218 | brelse(bh); |
1219 | bh = NULL; |
1220 | /* We are reading journal data which should not |
1221 | * be put in the uptodate cache. |
1222 | */ |
1223 | status = ocfs2_read_blocks_sync(osb, block: p_blkno, nr: 1, bhs: &bh); |
1224 | if (status < 0) { |
1225 | mlog_errno(status); |
1226 | goto bail; |
1227 | } |
1228 | |
1229 | brelse(bh); |
1230 | bh = NULL; |
1231 | } |
1232 | |
1233 | v_blkno += p_blocks; |
1234 | } |
1235 | |
1236 | bail: |
1237 | return status; |
1238 | } |
1239 | |
1240 | struct ocfs2_la_recovery_item { |
1241 | struct list_head lri_list; |
1242 | int lri_slot; |
1243 | struct ocfs2_dinode *lri_la_dinode; |
1244 | struct ocfs2_dinode *lri_tl_dinode; |
1245 | struct ocfs2_quota_recovery *lri_qrec; |
1246 | enum ocfs2_orphan_reco_type lri_orphan_reco_type; |
1247 | }; |
1248 | |
1249 | /* Does the second half of the recovery process. By this point, the |
1250 | * node is marked clean and can actually be considered recovered, |
1251 | * hence it's no longer in the recovery map, but there's still some |
1252 | * cleanup we can do which shouldn't happen within the recovery thread |
1253 | * as locking in that context becomes very difficult if we are to take |
1254 | * recovering nodes into account. |
1255 | * |
1256 | * NOTE: This function can and will sleep on recovery of other nodes |
1257 | * during cluster locking, just like any other ocfs2 process. |
1258 | */ |
1259 | void ocfs2_complete_recovery(struct work_struct *work) |
1260 | { |
1261 | int ret = 0; |
1262 | struct ocfs2_journal *journal = |
1263 | container_of(work, struct ocfs2_journal, j_recovery_work); |
1264 | struct ocfs2_super *osb = journal->j_osb; |
1265 | struct ocfs2_dinode *la_dinode, *tl_dinode; |
1266 | struct ocfs2_la_recovery_item *item, *n; |
1267 | struct ocfs2_quota_recovery *qrec; |
1268 | enum ocfs2_orphan_reco_type orphan_reco_type; |
1269 | LIST_HEAD(tmp_la_list); |
1270 | |
1271 | trace_ocfs2_complete_recovery( |
1272 | num: (unsigned long long)OCFS2_I(inode: journal->j_inode)->ip_blkno); |
1273 | |
1274 | spin_lock(lock: &journal->j_lock); |
1275 | list_splice_init(list: &journal->j_la_cleanups, head: &tmp_la_list); |
1276 | spin_unlock(lock: &journal->j_lock); |
1277 | |
1278 | list_for_each_entry_safe(item, n, &tmp_la_list, lri_list) { |
1279 | list_del_init(entry: &item->lri_list); |
1280 | |
1281 | ocfs2_wait_on_quotas(osb); |
1282 | |
1283 | la_dinode = item->lri_la_dinode; |
1284 | tl_dinode = item->lri_tl_dinode; |
1285 | qrec = item->lri_qrec; |
1286 | orphan_reco_type = item->lri_orphan_reco_type; |
1287 | |
1288 | trace_ocfs2_complete_recovery_slot(slot: item->lri_slot, |
1289 | la_ino: la_dinode ? le64_to_cpu(la_dinode->i_blkno) : 0, |
1290 | tl_ino: tl_dinode ? le64_to_cpu(tl_dinode->i_blkno) : 0, |
1291 | qrec); |
1292 | |
1293 | if (la_dinode) { |
1294 | ret = ocfs2_complete_local_alloc_recovery(osb, |
1295 | alloc: la_dinode); |
1296 | if (ret < 0) |
1297 | mlog_errno(ret); |
1298 | |
1299 | kfree(objp: la_dinode); |
1300 | } |
1301 | |
1302 | if (tl_dinode) { |
1303 | ret = ocfs2_complete_truncate_log_recovery(osb, |
1304 | tl_copy: tl_dinode); |
1305 | if (ret < 0) |
1306 | mlog_errno(ret); |
1307 | |
1308 | kfree(objp: tl_dinode); |
1309 | } |
1310 | |
1311 | ret = ocfs2_recover_orphans(osb, slot: item->lri_slot, |
1312 | orphan_reco_type); |
1313 | if (ret < 0) |
1314 | mlog_errno(ret); |
1315 | |
1316 | if (qrec) { |
1317 | ret = ocfs2_finish_quota_recovery(osb, rec: qrec, |
1318 | slot_num: item->lri_slot); |
1319 | if (ret < 0) |
1320 | mlog_errno(ret); |
1321 | /* Recovery info is already freed now */ |
1322 | } |
1323 | |
1324 | kfree(objp: item); |
1325 | } |
1326 | |
1327 | trace_ocfs2_complete_recovery_end(num: ret); |
1328 | } |
1329 | |
1330 | /* NOTE: This function always eats your references to la_dinode and |
1331 | * tl_dinode, either manually on error, or by passing them to |
1332 | * ocfs2_complete_recovery */ |
1333 | static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal, |
1334 | int slot_num, |
1335 | struct ocfs2_dinode *la_dinode, |
1336 | struct ocfs2_dinode *tl_dinode, |
1337 | struct ocfs2_quota_recovery *qrec, |
1338 | enum ocfs2_orphan_reco_type orphan_reco_type) |
1339 | { |
1340 | struct ocfs2_la_recovery_item *item; |
1341 | |
1342 | item = kmalloc(size: sizeof(struct ocfs2_la_recovery_item), GFP_NOFS); |
1343 | if (!item) { |
1344 | /* Though we wish to avoid it, we are in fact safe in |
1345 | * skipping local alloc cleanup as fsck.ocfs2 is more |
1346 | * than capable of reclaiming unused space. */ |
1347 | kfree(objp: la_dinode); |
1348 | kfree(objp: tl_dinode); |
1349 | |
1350 | if (qrec) |
1351 | ocfs2_free_quota_recovery(rec: qrec); |
1352 | |
1353 | mlog_errno(-ENOMEM); |
1354 | return; |
1355 | } |
1356 | |
1357 | INIT_LIST_HEAD(list: &item->lri_list); |
1358 | item->lri_la_dinode = la_dinode; |
1359 | item->lri_slot = slot_num; |
1360 | item->lri_tl_dinode = tl_dinode; |
1361 | item->lri_qrec = qrec; |
1362 | item->lri_orphan_reco_type = orphan_reco_type; |
1363 | |
1364 | spin_lock(lock: &journal->j_lock); |
1365 | list_add_tail(new: &item->lri_list, head: &journal->j_la_cleanups); |
1366 | queue_work(wq: journal->j_osb->ocfs2_wq, work: &journal->j_recovery_work); |
1367 | spin_unlock(lock: &journal->j_lock); |
1368 | } |
1369 | |
1370 | /* Called by the mount code to queue recovery the last part of |
1371 | * recovery for it's own and offline slot(s). */ |
1372 | void ocfs2_complete_mount_recovery(struct ocfs2_super *osb) |
1373 | { |
1374 | struct ocfs2_journal *journal = osb->journal; |
1375 | |
1376 | if (ocfs2_is_hard_readonly(osb)) |
1377 | return; |
1378 | |
1379 | /* No need to queue up our truncate_log as regular cleanup will catch |
1380 | * that */ |
1381 | ocfs2_queue_recovery_completion(journal, slot_num: osb->slot_num, |
1382 | la_dinode: osb->local_alloc_copy, NULL, NULL, |
1383 | orphan_reco_type: ORPHAN_NEED_TRUNCATE); |
1384 | ocfs2_schedule_truncate_log_flush(osb, cancel: 0); |
1385 | |
1386 | osb->local_alloc_copy = NULL; |
1387 | |
1388 | /* queue to recover orphan slots for all offline slots */ |
1389 | ocfs2_replay_map_set_state(osb, state: REPLAY_NEEDED); |
1390 | ocfs2_queue_replay_slots(osb, orphan_reco_type: ORPHAN_NEED_TRUNCATE); |
1391 | ocfs2_free_replay_slots(osb); |
1392 | } |
1393 | |
1394 | void ocfs2_complete_quota_recovery(struct ocfs2_super *osb) |
1395 | { |
1396 | if (osb->quota_rec) { |
1397 | ocfs2_queue_recovery_completion(journal: osb->journal, |
1398 | slot_num: osb->slot_num, |
1399 | NULL, |
1400 | NULL, |
1401 | qrec: osb->quota_rec, |
1402 | orphan_reco_type: ORPHAN_NEED_TRUNCATE); |
1403 | osb->quota_rec = NULL; |
1404 | } |
1405 | } |
1406 | |
1407 | static int __ocfs2_recovery_thread(void *arg) |
1408 | { |
1409 | int status, node_num, slot_num; |
1410 | struct ocfs2_super *osb = arg; |
1411 | struct ocfs2_recovery_map *rm = osb->recovery_map; |
1412 | int *rm_quota = NULL; |
1413 | int rm_quota_used = 0, i; |
1414 | struct ocfs2_quota_recovery *qrec; |
1415 | |
1416 | /* Whether the quota supported. */ |
1417 | int quota_enabled = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, |
1418 | OCFS2_FEATURE_RO_COMPAT_USRQUOTA) |
1419 | || OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, |
1420 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA); |
1421 | |
1422 | status = ocfs2_wait_on_mount(osb); |
1423 | if (status < 0) { |
1424 | goto bail; |
1425 | } |
1426 | |
1427 | if (quota_enabled) { |
1428 | rm_quota = kcalloc(n: osb->max_slots, size: sizeof(int), GFP_NOFS); |
1429 | if (!rm_quota) { |
1430 | status = -ENOMEM; |
1431 | goto bail; |
1432 | } |
1433 | } |
1434 | restart: |
1435 | status = ocfs2_super_lock(osb, ex: 1); |
1436 | if (status < 0) { |
1437 | mlog_errno(status); |
1438 | goto bail; |
1439 | } |
1440 | |
1441 | status = ocfs2_compute_replay_slots(osb); |
1442 | if (status < 0) |
1443 | mlog_errno(status); |
1444 | |
1445 | /* queue recovery for our own slot */ |
1446 | ocfs2_queue_recovery_completion(journal: osb->journal, slot_num: osb->slot_num, NULL, |
1447 | NULL, NULL, orphan_reco_type: ORPHAN_NO_NEED_TRUNCATE); |
1448 | |
1449 | spin_lock(lock: &osb->osb_lock); |
1450 | while (rm->rm_used) { |
1451 | /* It's always safe to remove entry zero, as we won't |
1452 | * clear it until ocfs2_recover_node() has succeeded. */ |
1453 | node_num = rm->rm_entries[0]; |
1454 | spin_unlock(lock: &osb->osb_lock); |
1455 | slot_num = ocfs2_node_num_to_slot(osb, node_num); |
1456 | trace_ocfs2_recovery_thread_node(val1: node_num, val2: slot_num); |
1457 | if (slot_num == -ENOENT) { |
1458 | status = 0; |
1459 | goto skip_recovery; |
1460 | } |
1461 | |
1462 | /* It is a bit subtle with quota recovery. We cannot do it |
1463 | * immediately because we have to obtain cluster locks from |
1464 | * quota files and we also don't want to just skip it because |
1465 | * then quota usage would be out of sync until some node takes |
1466 | * the slot. So we remember which nodes need quota recovery |
1467 | * and when everything else is done, we recover quotas. */ |
1468 | if (quota_enabled) { |
1469 | for (i = 0; i < rm_quota_used |
1470 | && rm_quota[i] != slot_num; i++) |
1471 | ; |
1472 | |
1473 | if (i == rm_quota_used) |
1474 | rm_quota[rm_quota_used++] = slot_num; |
1475 | } |
1476 | |
1477 | status = ocfs2_recover_node(osb, node_num, slot_num); |
1478 | skip_recovery: |
1479 | if (!status) { |
1480 | ocfs2_recovery_map_clear(osb, node_num); |
1481 | } else { |
1482 | mlog(ML_ERROR, |
1483 | "Error %d recovering node %d on device (%u,%u)!\n" , |
1484 | status, node_num, |
1485 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); |
1486 | mlog(ML_ERROR, "Volume requires unmount.\n" ); |
1487 | } |
1488 | |
1489 | spin_lock(lock: &osb->osb_lock); |
1490 | } |
1491 | spin_unlock(lock: &osb->osb_lock); |
1492 | trace_ocfs2_recovery_thread_end(num: status); |
1493 | |
1494 | /* Refresh all journal recovery generations from disk */ |
1495 | status = ocfs2_check_journals_nolocks(osb); |
1496 | status = (status == -EROFS) ? 0 : status; |
1497 | if (status < 0) |
1498 | mlog_errno(status); |
1499 | |
1500 | /* Now it is right time to recover quotas... We have to do this under |
1501 | * superblock lock so that no one can start using the slot (and crash) |
1502 | * before we recover it */ |
1503 | if (quota_enabled) { |
1504 | for (i = 0; i < rm_quota_used; i++) { |
1505 | qrec = ocfs2_begin_quota_recovery(osb, slot_num: rm_quota[i]); |
1506 | if (IS_ERR(ptr: qrec)) { |
1507 | status = PTR_ERR(ptr: qrec); |
1508 | mlog_errno(status); |
1509 | continue; |
1510 | } |
1511 | ocfs2_queue_recovery_completion(journal: osb->journal, |
1512 | slot_num: rm_quota[i], |
1513 | NULL, NULL, qrec, |
1514 | orphan_reco_type: ORPHAN_NEED_TRUNCATE); |
1515 | } |
1516 | } |
1517 | |
1518 | ocfs2_super_unlock(osb, ex: 1); |
1519 | |
1520 | /* queue recovery for offline slots */ |
1521 | ocfs2_queue_replay_slots(osb, orphan_reco_type: ORPHAN_NEED_TRUNCATE); |
1522 | |
1523 | bail: |
1524 | mutex_lock(&osb->recovery_lock); |
1525 | if (!status && !ocfs2_recovery_completed(osb)) { |
1526 | mutex_unlock(lock: &osb->recovery_lock); |
1527 | goto restart; |
1528 | } |
1529 | |
1530 | ocfs2_free_replay_slots(osb); |
1531 | osb->recovery_thread_task = NULL; |
1532 | mb(); /* sync with ocfs2_recovery_thread_running */ |
1533 | wake_up(&osb->recovery_event); |
1534 | |
1535 | mutex_unlock(lock: &osb->recovery_lock); |
1536 | |
1537 | if (quota_enabled) |
1538 | kfree(objp: rm_quota); |
1539 | |
1540 | return status; |
1541 | } |
1542 | |
1543 | void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num) |
1544 | { |
1545 | mutex_lock(&osb->recovery_lock); |
1546 | |
1547 | trace_ocfs2_recovery_thread(node_num, osb_node_num: osb->node_num, |
1548 | disable: osb->disable_recovery, recovery_thread: osb->recovery_thread_task, |
1549 | map_set: osb->disable_recovery ? |
1550 | -1 : ocfs2_recovery_map_set(osb, node_num)); |
1551 | |
1552 | if (osb->disable_recovery) |
1553 | goto out; |
1554 | |
1555 | if (osb->recovery_thread_task) |
1556 | goto out; |
1557 | |
1558 | osb->recovery_thread_task = kthread_run(__ocfs2_recovery_thread, osb, |
1559 | "ocfs2rec-%s" , osb->uuid_str); |
1560 | if (IS_ERR(ptr: osb->recovery_thread_task)) { |
1561 | mlog_errno((int)PTR_ERR(osb->recovery_thread_task)); |
1562 | osb->recovery_thread_task = NULL; |
1563 | } |
1564 | |
1565 | out: |
1566 | mutex_unlock(lock: &osb->recovery_lock); |
1567 | wake_up(&osb->recovery_event); |
1568 | } |
1569 | |
1570 | static int ocfs2_read_journal_inode(struct ocfs2_super *osb, |
1571 | int slot_num, |
1572 | struct buffer_head **bh, |
1573 | struct inode **ret_inode) |
1574 | { |
1575 | int status = -EACCES; |
1576 | struct inode *inode = NULL; |
1577 | |
1578 | BUG_ON(slot_num >= osb->max_slots); |
1579 | |
1580 | inode = ocfs2_get_system_file_inode(osb, type: JOURNAL_SYSTEM_INODE, |
1581 | slot: slot_num); |
1582 | if (!inode || is_bad_inode(inode)) { |
1583 | mlog_errno(status); |
1584 | goto bail; |
1585 | } |
1586 | SET_INODE_JOURNAL(inode); |
1587 | |
1588 | status = ocfs2_read_inode_block_full(inode, bh, OCFS2_BH_IGNORE_CACHE); |
1589 | if (status < 0) { |
1590 | mlog_errno(status); |
1591 | goto bail; |
1592 | } |
1593 | |
1594 | status = 0; |
1595 | |
1596 | bail: |
1597 | if (inode) { |
1598 | if (status || !ret_inode) |
1599 | iput(inode); |
1600 | else |
1601 | *ret_inode = inode; |
1602 | } |
1603 | return status; |
1604 | } |
1605 | |
1606 | /* Does the actual journal replay and marks the journal inode as |
1607 | * clean. Will only replay if the journal inode is marked dirty. */ |
1608 | static int ocfs2_replay_journal(struct ocfs2_super *osb, |
1609 | int node_num, |
1610 | int slot_num) |
1611 | { |
1612 | int status; |
1613 | int got_lock = 0; |
1614 | unsigned int flags; |
1615 | struct inode *inode = NULL; |
1616 | struct ocfs2_dinode *fe; |
1617 | journal_t *journal = NULL; |
1618 | struct buffer_head *bh = NULL; |
1619 | u32 slot_reco_gen; |
1620 | |
1621 | status = ocfs2_read_journal_inode(osb, slot_num, bh: &bh, ret_inode: &inode); |
1622 | if (status) { |
1623 | mlog_errno(status); |
1624 | goto done; |
1625 | } |
1626 | |
1627 | fe = (struct ocfs2_dinode *)bh->b_data; |
1628 | slot_reco_gen = ocfs2_get_recovery_generation(di: fe); |
1629 | brelse(bh); |
1630 | bh = NULL; |
1631 | |
1632 | /* |
1633 | * As the fs recovery is asynchronous, there is a small chance that |
1634 | * another node mounted (and recovered) the slot before the recovery |
1635 | * thread could get the lock. To handle that, we dirty read the journal |
1636 | * inode for that slot to get the recovery generation. If it is |
1637 | * different than what we expected, the slot has been recovered. |
1638 | * If not, it needs recovery. |
1639 | */ |
1640 | if (osb->slot_recovery_generations[slot_num] != slot_reco_gen) { |
1641 | trace_ocfs2_replay_journal_recovered(value1: slot_num, |
1642 | value2: osb->slot_recovery_generations[slot_num], value3: slot_reco_gen); |
1643 | osb->slot_recovery_generations[slot_num] = slot_reco_gen; |
1644 | status = -EBUSY; |
1645 | goto done; |
1646 | } |
1647 | |
1648 | /* Continue with recovery as the journal has not yet been recovered */ |
1649 | |
1650 | status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); |
1651 | if (status < 0) { |
1652 | trace_ocfs2_replay_journal_lock_err(num: status); |
1653 | if (status != -ERESTARTSYS) |
1654 | mlog(ML_ERROR, "Could not lock journal!\n" ); |
1655 | goto done; |
1656 | } |
1657 | got_lock = 1; |
1658 | |
1659 | fe = (struct ocfs2_dinode *) bh->b_data; |
1660 | |
1661 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); |
1662 | slot_reco_gen = ocfs2_get_recovery_generation(di: fe); |
1663 | |
1664 | if (!(flags & OCFS2_JOURNAL_DIRTY_FL)) { |
1665 | trace_ocfs2_replay_journal_skip(num: node_num); |
1666 | /* Refresh recovery generation for the slot */ |
1667 | osb->slot_recovery_generations[slot_num] = slot_reco_gen; |
1668 | goto done; |
1669 | } |
1670 | |
1671 | /* we need to run complete recovery for offline orphan slots */ |
1672 | ocfs2_replay_map_set_state(osb, state: REPLAY_NEEDED); |
1673 | |
1674 | printk(KERN_NOTICE "ocfs2: Begin replay journal (node %d, slot %d) on " \ |
1675 | "device (%u,%u)\n" , node_num, slot_num, MAJOR(osb->sb->s_dev), |
1676 | MINOR(osb->sb->s_dev)); |
1677 | |
1678 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); |
1679 | |
1680 | status = ocfs2_force_read_journal(inode); |
1681 | if (status < 0) { |
1682 | mlog_errno(status); |
1683 | goto done; |
1684 | } |
1685 | |
1686 | journal = jbd2_journal_init_inode(inode); |
1687 | if (IS_ERR(ptr: journal)) { |
1688 | mlog(ML_ERROR, "Linux journal layer error\n" ); |
1689 | status = PTR_ERR(ptr: journal); |
1690 | goto done; |
1691 | } |
1692 | |
1693 | status = jbd2_journal_load(journal); |
1694 | if (status < 0) { |
1695 | mlog_errno(status); |
1696 | BUG_ON(!igrab(inode)); |
1697 | jbd2_journal_destroy(journal); |
1698 | goto done; |
1699 | } |
1700 | |
1701 | ocfs2_clear_journal_error(sb: osb->sb, journal, slot: slot_num); |
1702 | |
1703 | /* wipe the journal */ |
1704 | jbd2_journal_lock_updates(journal); |
1705 | status = jbd2_journal_flush(journal, flags: 0); |
1706 | jbd2_journal_unlock_updates(journal); |
1707 | if (status < 0) |
1708 | mlog_errno(status); |
1709 | |
1710 | /* This will mark the node clean */ |
1711 | flags = le32_to_cpu(fe->id1.journal1.ij_flags); |
1712 | flags &= ~OCFS2_JOURNAL_DIRTY_FL; |
1713 | fe->id1.journal1.ij_flags = cpu_to_le32(flags); |
1714 | |
1715 | /* Increment recovery generation to indicate successful recovery */ |
1716 | ocfs2_bump_recovery_generation(di: fe); |
1717 | osb->slot_recovery_generations[slot_num] = |
1718 | ocfs2_get_recovery_generation(di: fe); |
1719 | |
1720 | ocfs2_compute_meta_ecc(sb: osb->sb, data: bh->b_data, bc: &fe->i_check); |
1721 | status = ocfs2_write_block(osb, bh, ci: INODE_CACHE(inode)); |
1722 | if (status < 0) |
1723 | mlog_errno(status); |
1724 | |
1725 | BUG_ON(!igrab(inode)); |
1726 | |
1727 | jbd2_journal_destroy(journal); |
1728 | |
1729 | printk(KERN_NOTICE "ocfs2: End replay journal (node %d, slot %d) on " \ |
1730 | "device (%u,%u)\n" , node_num, slot_num, MAJOR(osb->sb->s_dev), |
1731 | MINOR(osb->sb->s_dev)); |
1732 | done: |
1733 | /* drop the lock on this nodes journal */ |
1734 | if (got_lock) |
1735 | ocfs2_inode_unlock(inode, ex: 1); |
1736 | |
1737 | iput(inode); |
1738 | brelse(bh); |
1739 | |
1740 | return status; |
1741 | } |
1742 | |
1743 | /* |
1744 | * Do the most important parts of node recovery: |
1745 | * - Replay it's journal |
1746 | * - Stamp a clean local allocator file |
1747 | * - Stamp a clean truncate log |
1748 | * - Mark the node clean |
1749 | * |
1750 | * If this function completes without error, a node in OCFS2 can be |
1751 | * said to have been safely recovered. As a result, failure during the |
1752 | * second part of a nodes recovery process (local alloc recovery) is |
1753 | * far less concerning. |
1754 | */ |
1755 | static int ocfs2_recover_node(struct ocfs2_super *osb, |
1756 | int node_num, int slot_num) |
1757 | { |
1758 | int status = 0; |
1759 | struct ocfs2_dinode *la_copy = NULL; |
1760 | struct ocfs2_dinode *tl_copy = NULL; |
1761 | |
1762 | trace_ocfs2_recover_node(value1: node_num, value2: slot_num, value3: osb->node_num); |
1763 | |
1764 | /* Should not ever be called to recover ourselves -- in that |
1765 | * case we should've called ocfs2_journal_load instead. */ |
1766 | BUG_ON(osb->node_num == node_num); |
1767 | |
1768 | status = ocfs2_replay_journal(osb, node_num, slot_num); |
1769 | if (status < 0) { |
1770 | if (status == -EBUSY) { |
1771 | trace_ocfs2_recover_node_skip(val1: slot_num, val2: node_num); |
1772 | status = 0; |
1773 | goto done; |
1774 | } |
1775 | mlog_errno(status); |
1776 | goto done; |
1777 | } |
1778 | |
1779 | /* Stamp a clean local alloc file AFTER recovering the journal... */ |
1780 | status = ocfs2_begin_local_alloc_recovery(osb, node_num: slot_num, alloc_copy: &la_copy); |
1781 | if (status < 0) { |
1782 | mlog_errno(status); |
1783 | goto done; |
1784 | } |
1785 | |
1786 | /* An error from begin_truncate_log_recovery is not |
1787 | * serious enough to warrant halting the rest of |
1788 | * recovery. */ |
1789 | status = ocfs2_begin_truncate_log_recovery(osb, slot_num, tl_copy: &tl_copy); |
1790 | if (status < 0) |
1791 | mlog_errno(status); |
1792 | |
1793 | /* Likewise, this would be a strange but ultimately not so |
1794 | * harmful place to get an error... */ |
1795 | status = ocfs2_clear_slot(osb, slot_num); |
1796 | if (status < 0) |
1797 | mlog_errno(status); |
1798 | |
1799 | /* This will kfree the memory pointed to by la_copy and tl_copy */ |
1800 | ocfs2_queue_recovery_completion(journal: osb->journal, slot_num, la_dinode: la_copy, |
1801 | tl_dinode: tl_copy, NULL, orphan_reco_type: ORPHAN_NEED_TRUNCATE); |
1802 | |
1803 | status = 0; |
1804 | done: |
1805 | |
1806 | return status; |
1807 | } |
1808 | |
1809 | /* Test node liveness by trylocking his journal. If we get the lock, |
1810 | * we drop it here. Return 0 if we got the lock, -EAGAIN if node is |
1811 | * still alive (we couldn't get the lock) and < 0 on error. */ |
1812 | static int ocfs2_trylock_journal(struct ocfs2_super *osb, |
1813 | int slot_num) |
1814 | { |
1815 | int status, flags; |
1816 | struct inode *inode = NULL; |
1817 | |
1818 | inode = ocfs2_get_system_file_inode(osb, type: JOURNAL_SYSTEM_INODE, |
1819 | slot: slot_num); |
1820 | if (inode == NULL) { |
1821 | mlog(ML_ERROR, "access error\n" ); |
1822 | status = -EACCES; |
1823 | goto bail; |
1824 | } |
1825 | if (is_bad_inode(inode)) { |
1826 | mlog(ML_ERROR, "access error (bad inode)\n" ); |
1827 | iput(inode); |
1828 | inode = NULL; |
1829 | status = -EACCES; |
1830 | goto bail; |
1831 | } |
1832 | SET_INODE_JOURNAL(inode); |
1833 | |
1834 | flags = OCFS2_META_LOCK_RECOVERY | OCFS2_META_LOCK_NOQUEUE; |
1835 | status = ocfs2_inode_lock_full(inode, NULL, 1, flags); |
1836 | if (status < 0) { |
1837 | if (status != -EAGAIN) |
1838 | mlog_errno(status); |
1839 | goto bail; |
1840 | } |
1841 | |
1842 | ocfs2_inode_unlock(inode, ex: 1); |
1843 | bail: |
1844 | iput(inode); |
1845 | |
1846 | return status; |
1847 | } |
1848 | |
1849 | /* Call this underneath ocfs2_super_lock. It also assumes that the |
1850 | * slot info struct has been updated from disk. */ |
1851 | int ocfs2_mark_dead_nodes(struct ocfs2_super *osb) |
1852 | { |
1853 | unsigned int node_num; |
1854 | int status, i; |
1855 | u32 gen; |
1856 | struct buffer_head *bh = NULL; |
1857 | struct ocfs2_dinode *di; |
1858 | |
1859 | /* This is called with the super block cluster lock, so we |
1860 | * know that the slot map can't change underneath us. */ |
1861 | |
1862 | for (i = 0; i < osb->max_slots; i++) { |
1863 | /* Read journal inode to get the recovery generation */ |
1864 | status = ocfs2_read_journal_inode(osb, slot_num: i, bh: &bh, NULL); |
1865 | if (status) { |
1866 | mlog_errno(status); |
1867 | goto bail; |
1868 | } |
1869 | di = (struct ocfs2_dinode *)bh->b_data; |
1870 | gen = ocfs2_get_recovery_generation(di); |
1871 | brelse(bh); |
1872 | bh = NULL; |
1873 | |
1874 | spin_lock(lock: &osb->osb_lock); |
1875 | osb->slot_recovery_generations[i] = gen; |
1876 | |
1877 | trace_ocfs2_mark_dead_nodes(val1: i, |
1878 | val2: osb->slot_recovery_generations[i]); |
1879 | |
1880 | if (i == osb->slot_num) { |
1881 | spin_unlock(lock: &osb->osb_lock); |
1882 | continue; |
1883 | } |
1884 | |
1885 | status = ocfs2_slot_to_node_num_locked(osb, slot_num: i, node_num: &node_num); |
1886 | if (status == -ENOENT) { |
1887 | spin_unlock(lock: &osb->osb_lock); |
1888 | continue; |
1889 | } |
1890 | |
1891 | if (__ocfs2_recovery_map_test(osb, node_num)) { |
1892 | spin_unlock(lock: &osb->osb_lock); |
1893 | continue; |
1894 | } |
1895 | spin_unlock(lock: &osb->osb_lock); |
1896 | |
1897 | /* Ok, we have a slot occupied by another node which |
1898 | * is not in the recovery map. We trylock his journal |
1899 | * file here to test if he's alive. */ |
1900 | status = ocfs2_trylock_journal(osb, slot_num: i); |
1901 | if (!status) { |
1902 | /* Since we're called from mount, we know that |
1903 | * the recovery thread can't race us on |
1904 | * setting / checking the recovery bits. */ |
1905 | ocfs2_recovery_thread(osb, node_num); |
1906 | } else if ((status < 0) && (status != -EAGAIN)) { |
1907 | mlog_errno(status); |
1908 | goto bail; |
1909 | } |
1910 | } |
1911 | |
1912 | status = 0; |
1913 | bail: |
1914 | return status; |
1915 | } |
1916 | |
1917 | /* |
1918 | * Scan timer should get fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT. Add some |
1919 | * randomness to the timeout to minimize multple nodes firing the timer at the |
1920 | * same time. |
1921 | */ |
1922 | static inline unsigned long ocfs2_orphan_scan_timeout(void) |
1923 | { |
1924 | unsigned long time; |
1925 | |
1926 | get_random_bytes(buf: &time, len: sizeof(time)); |
1927 | time = ORPHAN_SCAN_SCHEDULE_TIMEOUT + (time % 5000); |
1928 | return msecs_to_jiffies(m: time); |
1929 | } |
1930 | |
1931 | /* |
1932 | * ocfs2_queue_orphan_scan calls ocfs2_queue_recovery_completion for |
1933 | * every slot, queuing a recovery of the slot on the ocfs2_wq thread. This |
1934 | * is done to catch any orphans that are left over in orphan directories. |
1935 | * |
1936 | * It scans all slots, even ones that are in use. It does so to handle the |
1937 | * case described below: |
1938 | * |
1939 | * Node 1 has an inode it was using. The dentry went away due to memory |
1940 | * pressure. Node 1 closes the inode, but it's on the free list. The node |
1941 | * has the open lock. |
1942 | * Node 2 unlinks the inode. It grabs the dentry lock to notify others, |
1943 | * but node 1 has no dentry and doesn't get the message. It trylocks the |
1944 | * open lock, sees that another node has a PR, and does nothing. |
1945 | * Later node 2 runs its orphan dir. It igets the inode, trylocks the |
1946 | * open lock, sees the PR still, and does nothing. |
1947 | * Basically, we have to trigger an orphan iput on node 1. The only way |
1948 | * for this to happen is if node 1 runs node 2's orphan dir. |
1949 | * |
1950 | * ocfs2_queue_orphan_scan gets called every ORPHAN_SCAN_SCHEDULE_TIMEOUT |
1951 | * seconds. It gets an EX lock on os_lockres and checks sequence number |
1952 | * stored in LVB. If the sequence number has changed, it means some other |
1953 | * node has done the scan. This node skips the scan and tracks the |
1954 | * sequence number. If the sequence number didn't change, it means a scan |
1955 | * hasn't happened. The node queues a scan and increments the |
1956 | * sequence number in the LVB. |
1957 | */ |
1958 | static void ocfs2_queue_orphan_scan(struct ocfs2_super *osb) |
1959 | { |
1960 | struct ocfs2_orphan_scan *os; |
1961 | int status, i; |
1962 | u32 seqno = 0; |
1963 | |
1964 | os = &osb->osb_orphan_scan; |
1965 | |
1966 | if (atomic_read(v: &os->os_state) == ORPHAN_SCAN_INACTIVE) |
1967 | goto out; |
1968 | |
1969 | trace_ocfs2_queue_orphan_scan_begin(value1: os->os_count, value2: os->os_seqno, |
1970 | value3: atomic_read(v: &os->os_state)); |
1971 | |
1972 | status = ocfs2_orphan_scan_lock(osb, seqno: &seqno); |
1973 | if (status < 0) { |
1974 | if (status != -EAGAIN) |
1975 | mlog_errno(status); |
1976 | goto out; |
1977 | } |
1978 | |
1979 | /* Do no queue the tasks if the volume is being umounted */ |
1980 | if (atomic_read(v: &os->os_state) == ORPHAN_SCAN_INACTIVE) |
1981 | goto unlock; |
1982 | |
1983 | if (os->os_seqno != seqno) { |
1984 | os->os_seqno = seqno; |
1985 | goto unlock; |
1986 | } |
1987 | |
1988 | for (i = 0; i < osb->max_slots; i++) |
1989 | ocfs2_queue_recovery_completion(journal: osb->journal, slot_num: i, NULL, NULL, |
1990 | NULL, orphan_reco_type: ORPHAN_NO_NEED_TRUNCATE); |
1991 | /* |
1992 | * We queued a recovery on orphan slots, increment the sequence |
1993 | * number and update LVB so other node will skip the scan for a while |
1994 | */ |
1995 | seqno++; |
1996 | os->os_count++; |
1997 | os->os_scantime = ktime_get_seconds(); |
1998 | unlock: |
1999 | ocfs2_orphan_scan_unlock(osb, seqno); |
2000 | out: |
2001 | trace_ocfs2_queue_orphan_scan_end(value1: os->os_count, value2: os->os_seqno, |
2002 | value3: atomic_read(v: &os->os_state)); |
2003 | return; |
2004 | } |
2005 | |
2006 | /* Worker task that gets fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT millsec */ |
2007 | static void ocfs2_orphan_scan_work(struct work_struct *work) |
2008 | { |
2009 | struct ocfs2_orphan_scan *os; |
2010 | struct ocfs2_super *osb; |
2011 | |
2012 | os = container_of(work, struct ocfs2_orphan_scan, |
2013 | os_orphan_scan_work.work); |
2014 | osb = os->os_osb; |
2015 | |
2016 | mutex_lock(&os->os_lock); |
2017 | ocfs2_queue_orphan_scan(osb); |
2018 | if (atomic_read(v: &os->os_state) == ORPHAN_SCAN_ACTIVE) |
2019 | queue_delayed_work(wq: osb->ocfs2_wq, dwork: &os->os_orphan_scan_work, |
2020 | delay: ocfs2_orphan_scan_timeout()); |
2021 | mutex_unlock(lock: &os->os_lock); |
2022 | } |
2023 | |
2024 | void ocfs2_orphan_scan_stop(struct ocfs2_super *osb) |
2025 | { |
2026 | struct ocfs2_orphan_scan *os; |
2027 | |
2028 | os = &osb->osb_orphan_scan; |
2029 | if (atomic_read(v: &os->os_state) == ORPHAN_SCAN_ACTIVE) { |
2030 | atomic_set(v: &os->os_state, i: ORPHAN_SCAN_INACTIVE); |
2031 | mutex_lock(&os->os_lock); |
2032 | cancel_delayed_work(dwork: &os->os_orphan_scan_work); |
2033 | mutex_unlock(lock: &os->os_lock); |
2034 | } |
2035 | } |
2036 | |
2037 | void ocfs2_orphan_scan_init(struct ocfs2_super *osb) |
2038 | { |
2039 | struct ocfs2_orphan_scan *os; |
2040 | |
2041 | os = &osb->osb_orphan_scan; |
2042 | os->os_osb = osb; |
2043 | os->os_count = 0; |
2044 | os->os_seqno = 0; |
2045 | mutex_init(&os->os_lock); |
2046 | INIT_DELAYED_WORK(&os->os_orphan_scan_work, ocfs2_orphan_scan_work); |
2047 | } |
2048 | |
2049 | void ocfs2_orphan_scan_start(struct ocfs2_super *osb) |
2050 | { |
2051 | struct ocfs2_orphan_scan *os; |
2052 | |
2053 | os = &osb->osb_orphan_scan; |
2054 | os->os_scantime = ktime_get_seconds(); |
2055 | if (ocfs2_is_hard_readonly(osb) || ocfs2_mount_local(osb)) |
2056 | atomic_set(v: &os->os_state, i: ORPHAN_SCAN_INACTIVE); |
2057 | else { |
2058 | atomic_set(v: &os->os_state, i: ORPHAN_SCAN_ACTIVE); |
2059 | queue_delayed_work(wq: osb->ocfs2_wq, dwork: &os->os_orphan_scan_work, |
2060 | delay: ocfs2_orphan_scan_timeout()); |
2061 | } |
2062 | } |
2063 | |
2064 | struct ocfs2_orphan_filldir_priv { |
2065 | struct dir_context ctx; |
2066 | struct inode *head; |
2067 | struct ocfs2_super *osb; |
2068 | enum ocfs2_orphan_reco_type orphan_reco_type; |
2069 | }; |
2070 | |
2071 | static bool ocfs2_orphan_filldir(struct dir_context *ctx, const char *name, |
2072 | int name_len, loff_t pos, u64 ino, |
2073 | unsigned type) |
2074 | { |
2075 | struct ocfs2_orphan_filldir_priv *p = |
2076 | container_of(ctx, struct ocfs2_orphan_filldir_priv, ctx); |
2077 | struct inode *iter; |
2078 | |
2079 | if (name_len == 1 && !strncmp("." , name, 1)) |
2080 | return true; |
2081 | if (name_len == 2 && !strncmp(".." , name, 2)) |
2082 | return true; |
2083 | |
2084 | /* do not include dio entry in case of orphan scan */ |
2085 | if ((p->orphan_reco_type == ORPHAN_NO_NEED_TRUNCATE) && |
2086 | (!strncmp(name, OCFS2_DIO_ORPHAN_PREFIX, |
2087 | OCFS2_DIO_ORPHAN_PREFIX_LEN))) |
2088 | return true; |
2089 | |
2090 | /* Skip bad inodes so that recovery can continue */ |
2091 | iter = ocfs2_iget(osb: p->osb, feoff: ino, |
2092 | OCFS2_FI_FLAG_ORPHAN_RECOVERY, sysfile_type: 0); |
2093 | if (IS_ERR(ptr: iter)) |
2094 | return true; |
2095 | |
2096 | if (!strncmp(name, OCFS2_DIO_ORPHAN_PREFIX, |
2097 | OCFS2_DIO_ORPHAN_PREFIX_LEN)) |
2098 | OCFS2_I(inode: iter)->ip_flags |= OCFS2_INODE_DIO_ORPHAN_ENTRY; |
2099 | |
2100 | /* Skip inodes which are already added to recover list, since dio may |
2101 | * happen concurrently with unlink/rename */ |
2102 | if (OCFS2_I(inode: iter)->ip_next_orphan) { |
2103 | iput(iter); |
2104 | return true; |
2105 | } |
2106 | |
2107 | trace_ocfs2_orphan_filldir(num: (unsigned long long)OCFS2_I(inode: iter)->ip_blkno); |
2108 | /* No locking is required for the next_orphan queue as there |
2109 | * is only ever a single process doing orphan recovery. */ |
2110 | OCFS2_I(inode: iter)->ip_next_orphan = p->head; |
2111 | p->head = iter; |
2112 | |
2113 | return true; |
2114 | } |
2115 | |
2116 | static int ocfs2_queue_orphans(struct ocfs2_super *osb, |
2117 | int slot, |
2118 | struct inode **head, |
2119 | enum ocfs2_orphan_reco_type orphan_reco_type) |
2120 | { |
2121 | int status; |
2122 | struct inode *orphan_dir_inode = NULL; |
2123 | struct ocfs2_orphan_filldir_priv priv = { |
2124 | .ctx.actor = ocfs2_orphan_filldir, |
2125 | .osb = osb, |
2126 | .head = *head, |
2127 | .orphan_reco_type = orphan_reco_type |
2128 | }; |
2129 | |
2130 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
2131 | type: ORPHAN_DIR_SYSTEM_INODE, |
2132 | slot); |
2133 | if (!orphan_dir_inode) { |
2134 | status = -ENOENT; |
2135 | mlog_errno(status); |
2136 | return status; |
2137 | } |
2138 | |
2139 | inode_lock(inode: orphan_dir_inode); |
2140 | status = ocfs2_inode_lock(orphan_dir_inode, NULL, 0); |
2141 | if (status < 0) { |
2142 | mlog_errno(status); |
2143 | goto out; |
2144 | } |
2145 | |
2146 | status = ocfs2_dir_foreach(inode: orphan_dir_inode, ctx: &priv.ctx); |
2147 | if (status) { |
2148 | mlog_errno(status); |
2149 | goto out_cluster; |
2150 | } |
2151 | |
2152 | *head = priv.head; |
2153 | |
2154 | out_cluster: |
2155 | ocfs2_inode_unlock(inode: orphan_dir_inode, ex: 0); |
2156 | out: |
2157 | inode_unlock(inode: orphan_dir_inode); |
2158 | iput(orphan_dir_inode); |
2159 | return status; |
2160 | } |
2161 | |
2162 | static int ocfs2_orphan_recovery_can_continue(struct ocfs2_super *osb, |
2163 | int slot) |
2164 | { |
2165 | int ret; |
2166 | |
2167 | spin_lock(lock: &osb->osb_lock); |
2168 | ret = !osb->osb_orphan_wipes[slot]; |
2169 | spin_unlock(lock: &osb->osb_lock); |
2170 | return ret; |
2171 | } |
2172 | |
2173 | static void ocfs2_mark_recovering_orphan_dir(struct ocfs2_super *osb, |
2174 | int slot) |
2175 | { |
2176 | spin_lock(lock: &osb->osb_lock); |
2177 | /* Mark ourselves such that new processes in delete_inode() |
2178 | * know to quit early. */ |
2179 | ocfs2_node_map_set_bit(osb, map: &osb->osb_recovering_orphan_dirs, bit: slot); |
2180 | while (osb->osb_orphan_wipes[slot]) { |
2181 | /* If any processes are already in the middle of an |
2182 | * orphan wipe on this dir, then we need to wait for |
2183 | * them. */ |
2184 | spin_unlock(lock: &osb->osb_lock); |
2185 | wait_event_interruptible(osb->osb_wipe_event, |
2186 | ocfs2_orphan_recovery_can_continue(osb, slot)); |
2187 | spin_lock(lock: &osb->osb_lock); |
2188 | } |
2189 | spin_unlock(lock: &osb->osb_lock); |
2190 | } |
2191 | |
2192 | static void ocfs2_clear_recovering_orphan_dir(struct ocfs2_super *osb, |
2193 | int slot) |
2194 | { |
2195 | ocfs2_node_map_clear_bit(osb, map: &osb->osb_recovering_orphan_dirs, bit: slot); |
2196 | } |
2197 | |
2198 | /* |
2199 | * Orphan recovery. Each mounted node has it's own orphan dir which we |
2200 | * must run during recovery. Our strategy here is to build a list of |
2201 | * the inodes in the orphan dir and iget/iput them. The VFS does |
2202 | * (most) of the rest of the work. |
2203 | * |
2204 | * Orphan recovery can happen at any time, not just mount so we have a |
2205 | * couple of extra considerations. |
2206 | * |
2207 | * - We grab as many inodes as we can under the orphan dir lock - |
2208 | * doing iget() outside the orphan dir risks getting a reference on |
2209 | * an invalid inode. |
2210 | * - We must be sure not to deadlock with other processes on the |
2211 | * system wanting to run delete_inode(). This can happen when they go |
2212 | * to lock the orphan dir and the orphan recovery process attempts to |
2213 | * iget() inside the orphan dir lock. This can be avoided by |
2214 | * advertising our state to ocfs2_delete_inode(). |
2215 | */ |
2216 | static int ocfs2_recover_orphans(struct ocfs2_super *osb, |
2217 | int slot, |
2218 | enum ocfs2_orphan_reco_type orphan_reco_type) |
2219 | { |
2220 | int ret = 0; |
2221 | struct inode *inode = NULL; |
2222 | struct inode *iter; |
2223 | struct ocfs2_inode_info *oi; |
2224 | struct buffer_head *di_bh = NULL; |
2225 | struct ocfs2_dinode *di = NULL; |
2226 | |
2227 | trace_ocfs2_recover_orphans(num: slot); |
2228 | |
2229 | ocfs2_mark_recovering_orphan_dir(osb, slot); |
2230 | ret = ocfs2_queue_orphans(osb, slot, head: &inode, orphan_reco_type); |
2231 | ocfs2_clear_recovering_orphan_dir(osb, slot); |
2232 | |
2233 | /* Error here should be noted, but we want to continue with as |
2234 | * many queued inodes as we've got. */ |
2235 | if (ret) |
2236 | mlog_errno(ret); |
2237 | |
2238 | while (inode) { |
2239 | oi = OCFS2_I(inode); |
2240 | trace_ocfs2_recover_orphans_iput( |
2241 | num: (unsigned long long)oi->ip_blkno); |
2242 | |
2243 | iter = oi->ip_next_orphan; |
2244 | oi->ip_next_orphan = NULL; |
2245 | |
2246 | if (oi->ip_flags & OCFS2_INODE_DIO_ORPHAN_ENTRY) { |
2247 | inode_lock(inode); |
2248 | ret = ocfs2_rw_lock(inode, write: 1); |
2249 | if (ret < 0) { |
2250 | mlog_errno(ret); |
2251 | goto unlock_mutex; |
2252 | } |
2253 | /* |
2254 | * We need to take and drop the inode lock to |
2255 | * force read inode from disk. |
2256 | */ |
2257 | ret = ocfs2_inode_lock(inode, &di_bh, 1); |
2258 | if (ret) { |
2259 | mlog_errno(ret); |
2260 | goto unlock_rw; |
2261 | } |
2262 | |
2263 | di = (struct ocfs2_dinode *)di_bh->b_data; |
2264 | |
2265 | if (di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL)) { |
2266 | ret = ocfs2_truncate_file(inode, di_bh, |
2267 | new_i_size: i_size_read(inode)); |
2268 | if (ret < 0) { |
2269 | if (ret != -ENOSPC) |
2270 | mlog_errno(ret); |
2271 | goto unlock_inode; |
2272 | } |
2273 | |
2274 | ret = ocfs2_del_inode_from_orphan(osb, inode, |
2275 | di_bh, update_isize: 0, end: 0); |
2276 | if (ret) |
2277 | mlog_errno(ret); |
2278 | } |
2279 | unlock_inode: |
2280 | ocfs2_inode_unlock(inode, ex: 1); |
2281 | brelse(bh: di_bh); |
2282 | di_bh = NULL; |
2283 | unlock_rw: |
2284 | ocfs2_rw_unlock(inode, write: 1); |
2285 | unlock_mutex: |
2286 | inode_unlock(inode); |
2287 | |
2288 | /* clear dio flag in ocfs2_inode_info */ |
2289 | oi->ip_flags &= ~OCFS2_INODE_DIO_ORPHAN_ENTRY; |
2290 | } else { |
2291 | spin_lock(lock: &oi->ip_lock); |
2292 | /* Set the proper information to get us going into |
2293 | * ocfs2_delete_inode. */ |
2294 | oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED; |
2295 | spin_unlock(lock: &oi->ip_lock); |
2296 | } |
2297 | |
2298 | iput(inode); |
2299 | inode = iter; |
2300 | } |
2301 | |
2302 | return ret; |
2303 | } |
2304 | |
2305 | static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota) |
2306 | { |
2307 | /* This check is good because ocfs2 will wait on our recovery |
2308 | * thread before changing it to something other than MOUNTED |
2309 | * or DISABLED. */ |
2310 | wait_event(osb->osb_mount_event, |
2311 | (!quota && atomic_read(&osb->vol_state) == VOLUME_MOUNTED) || |
2312 | atomic_read(&osb->vol_state) == VOLUME_MOUNTED_QUOTAS || |
2313 | atomic_read(&osb->vol_state) == VOLUME_DISABLED); |
2314 | |
2315 | /* If there's an error on mount, then we may never get to the |
2316 | * MOUNTED flag, but this is set right before |
2317 | * dismount_volume() so we can trust it. */ |
2318 | if (atomic_read(v: &osb->vol_state) == VOLUME_DISABLED) { |
2319 | trace_ocfs2_wait_on_mount(num: VOLUME_DISABLED); |
2320 | mlog(0, "mount error, exiting!\n" ); |
2321 | return -EBUSY; |
2322 | } |
2323 | |
2324 | return 0; |
2325 | } |
2326 | |
2327 | static int ocfs2_commit_thread(void *arg) |
2328 | { |
2329 | int status; |
2330 | struct ocfs2_super *osb = arg; |
2331 | struct ocfs2_journal *journal = osb->journal; |
2332 | |
2333 | /* we can trust j_num_trans here because _should_stop() is only set in |
2334 | * shutdown and nobody other than ourselves should be able to start |
2335 | * transactions. committing on shutdown might take a few iterations |
2336 | * as final transactions put deleted inodes on the list */ |
2337 | while (!(kthread_should_stop() && |
2338 | atomic_read(v: &journal->j_num_trans) == 0)) { |
2339 | |
2340 | wait_event_interruptible(osb->checkpoint_event, |
2341 | atomic_read(&journal->j_num_trans) |
2342 | || kthread_should_stop()); |
2343 | |
2344 | status = ocfs2_commit_cache(osb); |
2345 | if (status < 0) { |
2346 | static unsigned long abort_warn_time; |
2347 | |
2348 | /* Warn about this once per minute */ |
2349 | if (printk_timed_ratelimit(caller_jiffies: &abort_warn_time, interval_msec: 60*HZ)) |
2350 | mlog(ML_ERROR, "status = %d, journal is " |
2351 | "already aborted.\n" , status); |
2352 | /* |
2353 | * After ocfs2_commit_cache() fails, j_num_trans has a |
2354 | * non-zero value. Sleep here to avoid a busy-wait |
2355 | * loop. |
2356 | */ |
2357 | msleep_interruptible(msecs: 1000); |
2358 | } |
2359 | |
2360 | if (kthread_should_stop() && atomic_read(v: &journal->j_num_trans)){ |
2361 | mlog(ML_KTHREAD, |
2362 | "commit_thread: %u transactions pending on " |
2363 | "shutdown\n" , |
2364 | atomic_read(&journal->j_num_trans)); |
2365 | } |
2366 | } |
2367 | |
2368 | return 0; |
2369 | } |
2370 | |
2371 | /* Reads all the journal inodes without taking any cluster locks. Used |
2372 | * for hard readonly access to determine whether any journal requires |
2373 | * recovery. Also used to refresh the recovery generation numbers after |
2374 | * a journal has been recovered by another node. |
2375 | */ |
2376 | int ocfs2_check_journals_nolocks(struct ocfs2_super *osb) |
2377 | { |
2378 | int ret = 0; |
2379 | unsigned int slot; |
2380 | struct buffer_head *di_bh = NULL; |
2381 | struct ocfs2_dinode *di; |
2382 | int journal_dirty = 0; |
2383 | |
2384 | for(slot = 0; slot < osb->max_slots; slot++) { |
2385 | ret = ocfs2_read_journal_inode(osb, slot_num: slot, bh: &di_bh, NULL); |
2386 | if (ret) { |
2387 | mlog_errno(ret); |
2388 | goto out; |
2389 | } |
2390 | |
2391 | di = (struct ocfs2_dinode *) di_bh->b_data; |
2392 | |
2393 | osb->slot_recovery_generations[slot] = |
2394 | ocfs2_get_recovery_generation(di); |
2395 | |
2396 | if (le32_to_cpu(di->id1.journal1.ij_flags) & |
2397 | OCFS2_JOURNAL_DIRTY_FL) |
2398 | journal_dirty = 1; |
2399 | |
2400 | brelse(bh: di_bh); |
2401 | di_bh = NULL; |
2402 | } |
2403 | |
2404 | out: |
2405 | if (journal_dirty) |
2406 | ret = -EROFS; |
2407 | return ret; |
2408 | } |
2409 | |