blob: ff82b28462a65c85cf6bff850856a77859ad987e [file] [log] [blame]
Mark Fashehccd979b2005-12-15 14:31:24 -08001/* -*- 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>
Srinivas Eeda83273932009-06-03 17:02:55 -070031#include <linux/time.h>
32#include <linux/random.h>
Joseph Qi55b465b2014-06-04 16:06:09 -070033#include <linux/delay.h>
Mark Fashehccd979b2005-12-15 14:31:24 -080034
Mark Fashehccd979b2005-12-15 14:31:24 -080035#include <cluster/masklog.h>
36
37#include "ocfs2.h"
38
39#include "alloc.h"
Joel Becker50655ae2008-09-11 15:53:07 -070040#include "blockcheck.h"
Mark Fasheh316f4b92007-09-07 18:21:26 -070041#include "dir.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080042#include "dlmglue.h"
43#include "extent_map.h"
44#include "heartbeat.h"
45#include "inode.h"
46#include "journal.h"
47#include "localalloc.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080048#include "slot_map.h"
49#include "super.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080050#include "sysfile.h"
Joel Becker0cf2f762009-02-12 16:41:25 -080051#include "uptodate.h"
Jan Kara22053632008-10-20 23:50:38 +020052#include "quota.h"
Joseph Qied460cf2015-02-16 15:59:57 -080053#include "file.h"
54#include "namei.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080055
56#include "buffer_head_io.h"
Tao Mab4107952011-02-24 14:15:35 +080057#include "ocfs2_trace.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080058
Ingo Molnar34af9462006-06-27 02:53:55 -070059DEFINE_SPINLOCK(trans_inc_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -080060
Srinivas Eeda83273932009-06-03 17:02:55 -070061#define ORPHAN_SCAN_SCHEDULE_TIMEOUT 300000
62
Mark Fashehccd979b2005-12-15 14:31:24 -080063static int ocfs2_force_read_journal(struct inode *inode);
64static int ocfs2_recover_node(struct ocfs2_super *osb,
Jan Kara22053632008-10-20 23:50:38 +020065 int node_num, int slot_num);
Mark Fashehccd979b2005-12-15 14:31:24 -080066static int __ocfs2_recovery_thread(void *arg);
67static int ocfs2_commit_cache(struct ocfs2_super *osb);
Jan Kara19ece542008-08-21 20:13:17 +020068static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota);
Mark Fashehccd979b2005-12-15 14:31:24 -080069static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb,
Sunil Mushran539d8262008-07-14 17:31:10 -070070 int dirty, int replayed);
Mark Fashehccd979b2005-12-15 14:31:24 -080071static int ocfs2_trylock_journal(struct ocfs2_super *osb,
72 int slot_num);
73static int ocfs2_recover_orphans(struct ocfs2_super *osb,
Joseph Qied460cf2015-02-16 15:59:57 -080074 int slot,
75 enum ocfs2_orphan_reco_type orphan_reco_type);
Mark Fashehccd979b2005-12-15 14:31:24 -080076static int ocfs2_commit_thread(void *arg);
Srinivas Eeda9140db02009-03-06 14:21:46 -080077static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal,
78 int slot_num,
79 struct ocfs2_dinode *la_dinode,
80 struct ocfs2_dinode *tl_dinode,
Joseph Qied460cf2015-02-16 15:59:57 -080081 struct ocfs2_quota_recovery *qrec,
82 enum ocfs2_orphan_reco_type orphan_reco_type);
Mark Fashehccd979b2005-12-15 14:31:24 -080083
Jan Kara19ece542008-08-21 20:13:17 +020084static inline int ocfs2_wait_on_mount(struct ocfs2_super *osb)
85{
86 return __ocfs2_wait_on_mount(osb, 0);
87}
88
89static inline int ocfs2_wait_on_quotas(struct ocfs2_super *osb)
90{
91 return __ocfs2_wait_on_mount(osb, 1);
92}
93
Srinivas Eeda9140db02009-03-06 14:21:46 -080094/*
95 * This replay_map is to track online/offline slots, so we could recover
96 * offline slots during recovery and mount
97 */
98
99enum ocfs2_replay_state {
100 REPLAY_UNNEEDED = 0, /* Replay is not needed, so ignore this map */
101 REPLAY_NEEDED, /* Replay slots marked in rm_replay_slots */
102 REPLAY_DONE /* Replay was already queued */
103};
104
105struct ocfs2_replay_map {
106 unsigned int rm_slots;
107 enum ocfs2_replay_state rm_state;
108 unsigned char rm_replay_slots[0];
109};
110
Joseph Qib519ea62015-06-24 16:55:34 -0700111static void ocfs2_replay_map_set_state(struct ocfs2_super *osb, int state)
Srinivas Eeda9140db02009-03-06 14:21:46 -0800112{
113 if (!osb->replay_map)
114 return;
115
116 /* If we've already queued the replay, we don't have any more to do */
117 if (osb->replay_map->rm_state == REPLAY_DONE)
118 return;
119
120 osb->replay_map->rm_state = state;
121}
122
123int ocfs2_compute_replay_slots(struct ocfs2_super *osb)
124{
125 struct ocfs2_replay_map *replay_map;
126 int i, node_num;
127
128 /* If replay map is already set, we don't do it again */
129 if (osb->replay_map)
130 return 0;
131
132 replay_map = kzalloc(sizeof(struct ocfs2_replay_map) +
133 (osb->max_slots * sizeof(char)), GFP_KERNEL);
134
135 if (!replay_map) {
136 mlog_errno(-ENOMEM);
137 return -ENOMEM;
138 }
139
140 spin_lock(&osb->osb_lock);
141
142 replay_map->rm_slots = osb->max_slots;
143 replay_map->rm_state = REPLAY_UNNEEDED;
144
145 /* set rm_replay_slots for offline slot(s) */
146 for (i = 0; i < replay_map->rm_slots; i++) {
147 if (ocfs2_slot_to_node_num_locked(osb, i, &node_num) == -ENOENT)
148 replay_map->rm_replay_slots[i] = 1;
149 }
150
151 osb->replay_map = replay_map;
152 spin_unlock(&osb->osb_lock);
153 return 0;
154}
155
Joseph Qib519ea62015-06-24 16:55:34 -0700156static void ocfs2_queue_replay_slots(struct ocfs2_super *osb,
Joseph Qied460cf2015-02-16 15:59:57 -0800157 enum ocfs2_orphan_reco_type orphan_reco_type)
Srinivas Eeda9140db02009-03-06 14:21:46 -0800158{
159 struct ocfs2_replay_map *replay_map = osb->replay_map;
160 int i;
161
162 if (!replay_map)
163 return;
164
165 if (replay_map->rm_state != REPLAY_NEEDED)
166 return;
167
168 for (i = 0; i < replay_map->rm_slots; i++)
169 if (replay_map->rm_replay_slots[i])
170 ocfs2_queue_recovery_completion(osb->journal, i, NULL,
Joseph Qied460cf2015-02-16 15:59:57 -0800171 NULL, NULL,
172 orphan_reco_type);
Srinivas Eeda9140db02009-03-06 14:21:46 -0800173 replay_map->rm_state = REPLAY_DONE;
174}
175
Joseph Qib519ea62015-06-24 16:55:34 -0700176static void ocfs2_free_replay_slots(struct ocfs2_super *osb)
Srinivas Eeda9140db02009-03-06 14:21:46 -0800177{
178 struct ocfs2_replay_map *replay_map = osb->replay_map;
179
180 if (!osb->replay_map)
181 return;
182
183 kfree(replay_map);
184 osb->replay_map = NULL;
185}
186
Joel Becker553abd02008-02-01 12:03:57 -0800187int ocfs2_recovery_init(struct ocfs2_super *osb)
188{
189 struct ocfs2_recovery_map *rm;
190
191 mutex_init(&osb->recovery_lock);
192 osb->disable_recovery = 0;
193 osb->recovery_thread_task = NULL;
194 init_waitqueue_head(&osb->recovery_event);
195
196 rm = kzalloc(sizeof(struct ocfs2_recovery_map) +
197 osb->max_slots * sizeof(unsigned int),
198 GFP_KERNEL);
199 if (!rm) {
200 mlog_errno(-ENOMEM);
201 return -ENOMEM;
202 }
203
204 rm->rm_entries = (unsigned int *)((char *)rm +
205 sizeof(struct ocfs2_recovery_map));
206 osb->recovery_map = rm;
207
208 return 0;
209}
210
211/* we can't grab the goofy sem lock from inside wait_event, so we use
212 * memory barriers to make sure that we'll see the null task before
213 * being woken up */
214static int ocfs2_recovery_thread_running(struct ocfs2_super *osb)
215{
216 mb();
217 return osb->recovery_thread_task != NULL;
218}
219
220void ocfs2_recovery_exit(struct ocfs2_super *osb)
221{
222 struct ocfs2_recovery_map *rm;
223
224 /* disable any new recovery threads and wait for any currently
225 * running ones to exit. Do this before setting the vol_state. */
226 mutex_lock(&osb->recovery_lock);
227 osb->disable_recovery = 1;
228 mutex_unlock(&osb->recovery_lock);
229 wait_event(osb->recovery_event, !ocfs2_recovery_thread_running(osb));
230
231 /* At this point, we know that no more recovery threads can be
232 * launched, so wait for any recovery completion work to
233 * complete. */
234 flush_workqueue(ocfs2_wq);
235
236 /*
237 * Now that recovery is shut down, and the osb is about to be
238 * freed, the osb_lock is not taken here.
239 */
240 rm = osb->recovery_map;
241 /* XXX: Should we bug if there are dirty entries? */
242
243 kfree(rm);
244}
245
246static int __ocfs2_recovery_map_test(struct ocfs2_super *osb,
247 unsigned int node_num)
248{
249 int i;
250 struct ocfs2_recovery_map *rm = osb->recovery_map;
251
252 assert_spin_locked(&osb->osb_lock);
253
254 for (i = 0; i < rm->rm_used; i++) {
255 if (rm->rm_entries[i] == node_num)
256 return 1;
257 }
258
259 return 0;
260}
261
262/* Behaves like test-and-set. Returns the previous value */
263static int ocfs2_recovery_map_set(struct ocfs2_super *osb,
264 unsigned int node_num)
265{
266 struct ocfs2_recovery_map *rm = osb->recovery_map;
267
268 spin_lock(&osb->osb_lock);
269 if (__ocfs2_recovery_map_test(osb, node_num)) {
270 spin_unlock(&osb->osb_lock);
271 return 1;
272 }
273
274 /* XXX: Can this be exploited? Not from o2dlm... */
275 BUG_ON(rm->rm_used >= osb->max_slots);
276
277 rm->rm_entries[rm->rm_used] = node_num;
278 rm->rm_used++;
279 spin_unlock(&osb->osb_lock);
280
281 return 0;
282}
283
284static void ocfs2_recovery_map_clear(struct ocfs2_super *osb,
285 unsigned int node_num)
286{
287 int i;
288 struct ocfs2_recovery_map *rm = osb->recovery_map;
289
290 spin_lock(&osb->osb_lock);
291
292 for (i = 0; i < rm->rm_used; i++) {
293 if (rm->rm_entries[i] == node_num)
294 break;
295 }
296
297 if (i < rm->rm_used) {
298 /* XXX: be careful with the pointer math */
299 memmove(&(rm->rm_entries[i]), &(rm->rm_entries[i + 1]),
300 (rm->rm_used - i - 1) * sizeof(unsigned int));
301 rm->rm_used--;
302 }
303
304 spin_unlock(&osb->osb_lock);
305}
306
Mark Fashehccd979b2005-12-15 14:31:24 -0800307static int ocfs2_commit_cache(struct ocfs2_super *osb)
308{
309 int status = 0;
310 unsigned int flushed;
Mark Fashehccd979b2005-12-15 14:31:24 -0800311 struct ocfs2_journal *journal = NULL;
312
Mark Fashehccd979b2005-12-15 14:31:24 -0800313 journal = osb->journal;
314
315 /* Flush all pending commits and checkpoint the journal. */
316 down_write(&journal->j_trans_barrier);
317
Tao Mab4107952011-02-24 14:15:35 +0800318 flushed = atomic_read(&journal->j_num_trans);
319 trace_ocfs2_commit_cache_begin(flushed);
320 if (flushed == 0) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800321 up_write(&journal->j_trans_barrier);
Mark Fashehccd979b2005-12-15 14:31:24 -0800322 goto finally;
323 }
324
Joel Becker2b4e30f2008-09-03 20:03:41 -0700325 jbd2_journal_lock_updates(journal->j_journal);
326 status = jbd2_journal_flush(journal->j_journal);
327 jbd2_journal_unlock_updates(journal->j_journal);
Mark Fashehccd979b2005-12-15 14:31:24 -0800328 if (status < 0) {
329 up_write(&journal->j_trans_barrier);
330 mlog_errno(status);
331 goto finally;
332 }
333
Tao Maf9c57ad2010-08-02 11:02:13 +0800334 ocfs2_inc_trans_id(journal);
Mark Fashehccd979b2005-12-15 14:31:24 -0800335
336 flushed = atomic_read(&journal->j_num_trans);
337 atomic_set(&journal->j_num_trans, 0);
338 up_write(&journal->j_trans_barrier);
339
Tao Mab4107952011-02-24 14:15:35 +0800340 trace_ocfs2_commit_cache_end(journal->j_trans_id, flushed);
Mark Fashehccd979b2005-12-15 14:31:24 -0800341
Mark Fasheh34d024f2007-09-24 15:56:19 -0700342 ocfs2_wake_downconvert_thread(osb);
Mark Fashehccd979b2005-12-15 14:31:24 -0800343 wake_up(&journal->j_checkpointed);
344finally:
Mark Fashehccd979b2005-12-15 14:31:24 -0800345 return status;
346}
347
Mark Fasheh1fabe142006-10-09 18:11:45 -0700348handle_t *ocfs2_start_trans(struct ocfs2_super *osb, int max_buffs)
Mark Fashehccd979b2005-12-15 14:31:24 -0800349{
Mark Fashehccd979b2005-12-15 14:31:24 -0800350 journal_t *journal = osb->journal->j_journal;
Mark Fasheh1fabe142006-10-09 18:11:45 -0700351 handle_t *handle;
Mark Fashehccd979b2005-12-15 14:31:24 -0800352
Eric Sesterhenn / snakebyteebdec832006-01-27 10:32:52 +0100353 BUG_ON(!osb || !osb->journal->j_journal);
Mark Fashehccd979b2005-12-15 14:31:24 -0800354
Mark Fasheh65eff9c2006-10-09 17:26:22 -0700355 if (ocfs2_is_hard_readonly(osb))
356 return ERR_PTR(-EROFS);
Mark Fashehccd979b2005-12-15 14:31:24 -0800357
358 BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE);
359 BUG_ON(max_buffs <= 0);
360
Jan Kara90e86a62008-08-27 22:30:28 +0200361 /* Nested transaction? Just return the handle... */
362 if (journal_current_handle())
363 return jbd2_journal_start(journal, max_buffs);
Mark Fashehccd979b2005-12-15 14:31:24 -0800364
Jan Karafef69252012-06-12 16:20:40 +0200365 sb_start_intwrite(osb->sb);
366
Mark Fashehccd979b2005-12-15 14:31:24 -0800367 down_read(&osb->journal->j_trans_barrier);
368
Joel Becker2b4e30f2008-09-03 20:03:41 -0700369 handle = jbd2_journal_start(journal, max_buffs);
Mark Fasheh1fabe142006-10-09 18:11:45 -0700370 if (IS_ERR(handle)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800371 up_read(&osb->journal->j_trans_barrier);
Jan Karafef69252012-06-12 16:20:40 +0200372 sb_end_intwrite(osb->sb);
Mark Fashehccd979b2005-12-15 14:31:24 -0800373
Mark Fasheh1fabe142006-10-09 18:11:45 -0700374 mlog_errno(PTR_ERR(handle));
Mark Fashehccd979b2005-12-15 14:31:24 -0800375
376 if (is_journal_aborted(journal)) {
Joe Perches7ecef142015-09-04 15:44:51 -0700377 ocfs2_abort(osb->sb, "Detected aborted journal\n");
Mark Fasheh1fabe142006-10-09 18:11:45 -0700378 handle = ERR_PTR(-EROFS);
Mark Fashehccd979b2005-12-15 14:31:24 -0800379 }
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800380 } else {
381 if (!ocfs2_mount_local(osb))
382 atomic_inc(&(osb->journal->j_num_trans));
383 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800384
Mark Fashehccd979b2005-12-15 14:31:24 -0800385 return handle;
Mark Fashehccd979b2005-12-15 14:31:24 -0800386}
387
Mark Fasheh1fabe142006-10-09 18:11:45 -0700388int ocfs2_commit_trans(struct ocfs2_super *osb,
389 handle_t *handle)
Mark Fashehccd979b2005-12-15 14:31:24 -0800390{
Jan Kara90e86a62008-08-27 22:30:28 +0200391 int ret, nested;
Mark Fasheh02dc1af2006-10-09 16:48:10 -0700392 struct ocfs2_journal *journal = osb->journal;
Mark Fashehccd979b2005-12-15 14:31:24 -0800393
394 BUG_ON(!handle);
395
Jan Kara90e86a62008-08-27 22:30:28 +0200396 nested = handle->h_ref > 1;
Joel Becker2b4e30f2008-09-03 20:03:41 -0700397 ret = jbd2_journal_stop(handle);
Mark Fasheh1fabe142006-10-09 18:11:45 -0700398 if (ret < 0)
399 mlog_errno(ret);
Mark Fashehccd979b2005-12-15 14:31:24 -0800400
Jan Karafef69252012-06-12 16:20:40 +0200401 if (!nested) {
Jan Kara90e86a62008-08-27 22:30:28 +0200402 up_read(&journal->j_trans_barrier);
Jan Karafef69252012-06-12 16:20:40 +0200403 sb_end_intwrite(osb->sb);
404 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800405
Mark Fasheh1fabe142006-10-09 18:11:45 -0700406 return ret;
Mark Fashehccd979b2005-12-15 14:31:24 -0800407}
408
409/*
Tao Mac901fb02010-04-26 14:34:57 +0800410 * 'nblocks' is what you want to add to the current transaction.
Mark Fashehccd979b2005-12-15 14:31:24 -0800411 *
Joel Becker2b4e30f2008-09-03 20:03:41 -0700412 * This might call jbd2_journal_restart() which will commit dirty buffers
Mark Fashehe8aed342007-12-03 16:43:01 -0800413 * and then restart the transaction. Before calling
414 * ocfs2_extend_trans(), any changed blocks should have been
415 * dirtied. After calling it, all blocks which need to be changed must
416 * go through another set of journal_access/journal_dirty calls.
417 *
Mark Fashehccd979b2005-12-15 14:31:24 -0800418 * WARNING: This will not release any semaphores or disk locks taken
419 * during the transaction, so make sure they were taken *before*
420 * start_trans or we'll have ordering deadlocks.
421 *
422 * WARNING2: Note that we do *not* drop j_trans_barrier here. This is
423 * good because transaction ids haven't yet been recorded on the
424 * cluster locks associated with this handle.
425 */
Mark Fasheh1fc58142006-10-05 14:15:36 -0700426int ocfs2_extend_trans(handle_t *handle, int nblocks)
Mark Fashehccd979b2005-12-15 14:31:24 -0800427{
Tao Mac901fb02010-04-26 14:34:57 +0800428 int status, old_nblocks;
Mark Fashehccd979b2005-12-15 14:31:24 -0800429
430 BUG_ON(!handle);
Tao Mac901fb02010-04-26 14:34:57 +0800431 BUG_ON(nblocks < 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800432
Tao Mac901fb02010-04-26 14:34:57 +0800433 if (!nblocks)
434 return 0;
435
436 old_nblocks = handle->h_buffer_credits;
Mark Fashehccd979b2005-12-15 14:31:24 -0800437
Tao Mab4107952011-02-24 14:15:35 +0800438 trace_ocfs2_extend_trans(old_nblocks, nblocks);
Mark Fashehccd979b2005-12-15 14:31:24 -0800439
Joel Beckere407e392008-06-12 22:35:39 -0700440#ifdef CONFIG_OCFS2_DEBUG_FS
Mark Fasheh0879c582007-12-03 16:42:19 -0800441 status = 1;
442#else
Joel Becker2b4e30f2008-09-03 20:03:41 -0700443 status = jbd2_journal_extend(handle, nblocks);
Mark Fashehccd979b2005-12-15 14:31:24 -0800444 if (status < 0) {
445 mlog_errno(status);
446 goto bail;
447 }
Mark Fasheh0879c582007-12-03 16:42:19 -0800448#endif
Mark Fashehccd979b2005-12-15 14:31:24 -0800449
450 if (status > 0) {
Tao Mab4107952011-02-24 14:15:35 +0800451 trace_ocfs2_extend_trans_restart(old_nblocks + nblocks);
Tao Mac901fb02010-04-26 14:34:57 +0800452 status = jbd2_journal_restart(handle,
453 old_nblocks + nblocks);
Mark Fashehccd979b2005-12-15 14:31:24 -0800454 if (status < 0) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800455 mlog_errno(status);
456 goto bail;
457 }
Mark Fasheh01ddf1e2006-10-05 13:54:39 -0700458 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800459
460 status = 0;
461bail:
Mark Fashehccd979b2005-12-15 14:31:24 -0800462 return status;
463}
464
Younger Liu2b1e55c2013-09-11 14:19:44 -0700465/*
466 * If we have fewer than thresh credits, extend by OCFS2_MAX_TRANS_DATA.
467 * If that fails, restart the transaction & regain write access for the
468 * buffer head which is used for metadata modifications.
469 * Taken from Ext4: extend_or_restart_transaction()
470 */
471int ocfs2_allocate_extend_trans(handle_t *handle, int thresh)
472{
473 int status, old_nblks;
474
475 BUG_ON(!handle);
476
477 old_nblks = handle->h_buffer_credits;
478 trace_ocfs2_allocate_extend_trans(old_nblks, thresh);
479
480 if (old_nblks < thresh)
481 return 0;
482
483 status = jbd2_journal_extend(handle, OCFS2_MAX_TRANS_DATA);
484 if (status < 0) {
485 mlog_errno(status);
486 goto bail;
487 }
488
489 if (status > 0) {
490 status = jbd2_journal_restart(handle, OCFS2_MAX_TRANS_DATA);
491 if (status < 0)
492 mlog_errno(status);
493 }
494
495bail:
496 return status;
497}
498
499
Joel Becker50655ae2008-09-11 15:53:07 -0700500struct ocfs2_triggers {
501 struct jbd2_buffer_trigger_type ot_triggers;
502 int ot_offset;
503};
504
505static inline struct ocfs2_triggers *to_ocfs2_trigger(struct jbd2_buffer_trigger_type *triggers)
506{
507 return container_of(triggers, struct ocfs2_triggers, ot_triggers);
508}
509
Jan Kara13ceef02010-07-14 07:56:33 +0200510static void ocfs2_frozen_trigger(struct jbd2_buffer_trigger_type *triggers,
Joel Becker50655ae2008-09-11 15:53:07 -0700511 struct buffer_head *bh,
512 void *data, size_t size)
513{
514 struct ocfs2_triggers *ot = to_ocfs2_trigger(triggers);
515
516 /*
517 * We aren't guaranteed to have the superblock here, so we
518 * must unconditionally compute the ecc data.
519 * __ocfs2_journal_access() will only set the triggers if
520 * metaecc is enabled.
521 */
522 ocfs2_block_check_compute(data, size, data + ot->ot_offset);
523}
524
525/*
526 * Quota blocks have their own trigger because the struct ocfs2_block_check
527 * offset depends on the blocksize.
528 */
Jan Kara13ceef02010-07-14 07:56:33 +0200529static void ocfs2_dq_frozen_trigger(struct jbd2_buffer_trigger_type *triggers,
Joel Becker50655ae2008-09-11 15:53:07 -0700530 struct buffer_head *bh,
531 void *data, size_t size)
532{
533 struct ocfs2_disk_dqtrailer *dqt =
534 ocfs2_block_dqtrailer(size, data);
535
536 /*
537 * We aren't guaranteed to have the superblock here, so we
538 * must unconditionally compute the ecc data.
539 * __ocfs2_journal_access() will only set the triggers if
540 * metaecc is enabled.
541 */
542 ocfs2_block_check_compute(data, size, &dqt->dq_check);
543}
544
Joel Beckerc175a512008-12-10 17:58:22 -0800545/*
546 * Directory blocks also have their own trigger because the
547 * struct ocfs2_block_check offset depends on the blocksize.
548 */
Jan Kara13ceef02010-07-14 07:56:33 +0200549static void ocfs2_db_frozen_trigger(struct jbd2_buffer_trigger_type *triggers,
Joel Beckerc175a512008-12-10 17:58:22 -0800550 struct buffer_head *bh,
551 void *data, size_t size)
552{
553 struct ocfs2_dir_block_trailer *trailer =
554 ocfs2_dir_trailer_from_size(size, data);
555
556 /*
557 * We aren't guaranteed to have the superblock here, so we
558 * must unconditionally compute the ecc data.
559 * __ocfs2_journal_access() will only set the triggers if
560 * metaecc is enabled.
561 */
562 ocfs2_block_check_compute(data, size, &trailer->db_check);
563}
564
Joel Becker50655ae2008-09-11 15:53:07 -0700565static void ocfs2_abort_trigger(struct jbd2_buffer_trigger_type *triggers,
566 struct buffer_head *bh)
567{
568 mlog(ML_ERROR,
569 "ocfs2_abort_trigger called by JBD2. bh = 0x%lx, "
570 "bh->b_blocknr = %llu\n",
571 (unsigned long)bh,
572 (unsigned long long)bh->b_blocknr);
573
Xue jiufei74e364a2015-06-24 16:55:20 -0700574 ocfs2_error(bh->b_bdev->bd_super,
Joel Becker50655ae2008-09-11 15:53:07 -0700575 "JBD2 has aborted our journal, ocfs2 cannot continue\n");
576}
577
578static struct ocfs2_triggers di_triggers = {
579 .ot_triggers = {
Jan Kara13ceef02010-07-14 07:56:33 +0200580 .t_frozen = ocfs2_frozen_trigger,
Joel Becker50655ae2008-09-11 15:53:07 -0700581 .t_abort = ocfs2_abort_trigger,
582 },
583 .ot_offset = offsetof(struct ocfs2_dinode, i_check),
584};
585
586static struct ocfs2_triggers eb_triggers = {
587 .ot_triggers = {
Jan Kara13ceef02010-07-14 07:56:33 +0200588 .t_frozen = ocfs2_frozen_trigger,
Joel Becker50655ae2008-09-11 15:53:07 -0700589 .t_abort = ocfs2_abort_trigger,
590 },
591 .ot_offset = offsetof(struct ocfs2_extent_block, h_check),
592};
593
Tao Ma93c97082009-08-18 11:19:20 +0800594static struct ocfs2_triggers rb_triggers = {
595 .ot_triggers = {
Jan Kara13ceef02010-07-14 07:56:33 +0200596 .t_frozen = ocfs2_frozen_trigger,
Tao Ma93c97082009-08-18 11:19:20 +0800597 .t_abort = ocfs2_abort_trigger,
598 },
599 .ot_offset = offsetof(struct ocfs2_refcount_block, rf_check),
600};
601
Joel Becker50655ae2008-09-11 15:53:07 -0700602static struct ocfs2_triggers gd_triggers = {
603 .ot_triggers = {
Jan Kara13ceef02010-07-14 07:56:33 +0200604 .t_frozen = ocfs2_frozen_trigger,
Joel Becker50655ae2008-09-11 15:53:07 -0700605 .t_abort = ocfs2_abort_trigger,
606 },
607 .ot_offset = offsetof(struct ocfs2_group_desc, bg_check),
608};
609
Joel Beckerc175a512008-12-10 17:58:22 -0800610static struct ocfs2_triggers db_triggers = {
611 .ot_triggers = {
Jan Kara13ceef02010-07-14 07:56:33 +0200612 .t_frozen = ocfs2_db_frozen_trigger,
Joel Beckerc175a512008-12-10 17:58:22 -0800613 .t_abort = ocfs2_abort_trigger,
614 },
615};
616
Joel Becker50655ae2008-09-11 15:53:07 -0700617static struct ocfs2_triggers xb_triggers = {
618 .ot_triggers = {
Jan Kara13ceef02010-07-14 07:56:33 +0200619 .t_frozen = ocfs2_frozen_trigger,
Joel Becker50655ae2008-09-11 15:53:07 -0700620 .t_abort = ocfs2_abort_trigger,
621 },
622 .ot_offset = offsetof(struct ocfs2_xattr_block, xb_check),
623};
624
625static struct ocfs2_triggers dq_triggers = {
626 .ot_triggers = {
Jan Kara13ceef02010-07-14 07:56:33 +0200627 .t_frozen = ocfs2_dq_frozen_trigger,
Joel Becker50655ae2008-09-11 15:53:07 -0700628 .t_abort = ocfs2_abort_trigger,
629 },
630};
631
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800632static struct ocfs2_triggers dr_triggers = {
633 .ot_triggers = {
Jan Kara13ceef02010-07-14 07:56:33 +0200634 .t_frozen = ocfs2_frozen_trigger,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800635 .t_abort = ocfs2_abort_trigger,
636 },
637 .ot_offset = offsetof(struct ocfs2_dx_root_block, dr_check),
638};
639
640static struct ocfs2_triggers dl_triggers = {
641 .ot_triggers = {
Jan Kara13ceef02010-07-14 07:56:33 +0200642 .t_frozen = ocfs2_frozen_trigger,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800643 .t_abort = ocfs2_abort_trigger,
644 },
645 .ot_offset = offsetof(struct ocfs2_dx_leaf, dl_check),
646};
647
Joel Becker50655ae2008-09-11 15:53:07 -0700648static int __ocfs2_journal_access(handle_t *handle,
Joel Becker0cf2f762009-02-12 16:41:25 -0800649 struct ocfs2_caching_info *ci,
Joel Becker50655ae2008-09-11 15:53:07 -0700650 struct buffer_head *bh,
651 struct ocfs2_triggers *triggers,
652 int type)
Mark Fashehccd979b2005-12-15 14:31:24 -0800653{
654 int status;
Joel Becker0cf2f762009-02-12 16:41:25 -0800655 struct ocfs2_super *osb =
656 OCFS2_SB(ocfs2_metadata_cache_get_super(ci));
Mark Fashehccd979b2005-12-15 14:31:24 -0800657
Joel Becker0cf2f762009-02-12 16:41:25 -0800658 BUG_ON(!ci || !ci->ci_ops);
Mark Fashehccd979b2005-12-15 14:31:24 -0800659 BUG_ON(!handle);
660 BUG_ON(!bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800661
Tao Mab4107952011-02-24 14:15:35 +0800662 trace_ocfs2_journal_access(
663 (unsigned long long)ocfs2_metadata_cache_owner(ci),
664 (unsigned long long)bh->b_blocknr, type, bh->b_size);
Mark Fashehccd979b2005-12-15 14:31:24 -0800665
666 /* we can safely remove this assertion after testing. */
667 if (!buffer_uptodate(bh)) {
668 mlog(ML_ERROR, "giving me a buffer that's not uptodate!\n");
669 mlog(ML_ERROR, "b_blocknr=%llu\n",
670 (unsigned long long)bh->b_blocknr);
Joseph Qiacf8fdb2015-09-04 15:43:43 -0700671
672 lock_buffer(bh);
673 /*
674 * A previous attempt to write this buffer head failed.
675 * Nothing we can do but to retry the write and hope for
676 * the best.
677 */
678 if (buffer_write_io_error(bh) && !buffer_uptodate(bh)) {
679 clear_buffer_write_io_error(bh);
680 set_buffer_uptodate(bh);
681 }
682
683 if (!buffer_uptodate(bh)) {
684 unlock_buffer(bh);
685 return -EIO;
686 }
687 unlock_buffer(bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800688 }
689
Joel Becker0cf2f762009-02-12 16:41:25 -0800690 /* Set the current transaction information on the ci so
Mark Fashehccd979b2005-12-15 14:31:24 -0800691 * that the locking code knows whether it can drop it's locks
Joel Becker0cf2f762009-02-12 16:41:25 -0800692 * on this ci or not. We're protected from the commit
Mark Fashehccd979b2005-12-15 14:31:24 -0800693 * thread updating the current transaction id until
694 * ocfs2_commit_trans() because ocfs2_start_trans() took
695 * j_trans_barrier for us. */
Joel Becker0cf2f762009-02-12 16:41:25 -0800696 ocfs2_set_ci_lock_trans(osb->journal, ci);
Mark Fashehccd979b2005-12-15 14:31:24 -0800697
Joel Becker0cf2f762009-02-12 16:41:25 -0800698 ocfs2_metadata_cache_io_lock(ci);
Mark Fashehccd979b2005-12-15 14:31:24 -0800699 switch (type) {
700 case OCFS2_JOURNAL_ACCESS_CREATE:
701 case OCFS2_JOURNAL_ACCESS_WRITE:
Joel Becker2b4e30f2008-09-03 20:03:41 -0700702 status = jbd2_journal_get_write_access(handle, bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800703 break;
704
705 case OCFS2_JOURNAL_ACCESS_UNDO:
Joel Becker2b4e30f2008-09-03 20:03:41 -0700706 status = jbd2_journal_get_undo_access(handle, bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800707 break;
708
709 default:
710 status = -EINVAL;
André Goddard Rosaaf901ca2009-11-14 13:09:05 -0200711 mlog(ML_ERROR, "Unknown access type!\n");
Mark Fashehccd979b2005-12-15 14:31:24 -0800712 }
Joel Becker0cf2f762009-02-12 16:41:25 -0800713 if (!status && ocfs2_meta_ecc(osb) && triggers)
Joel Becker50655ae2008-09-11 15:53:07 -0700714 jbd2_journal_set_triggers(bh, &triggers->ot_triggers);
Joel Becker0cf2f762009-02-12 16:41:25 -0800715 ocfs2_metadata_cache_io_unlock(ci);
Mark Fashehccd979b2005-12-15 14:31:24 -0800716
717 if (status < 0)
718 mlog(ML_ERROR, "Error %d getting %d access to buffer!\n",
719 status, type);
720
Mark Fashehccd979b2005-12-15 14:31:24 -0800721 return status;
722}
723
Joel Becker0cf2f762009-02-12 16:41:25 -0800724int ocfs2_journal_access_di(handle_t *handle, struct ocfs2_caching_info *ci,
Joel Becker50655ae2008-09-11 15:53:07 -0700725 struct buffer_head *bh, int type)
726{
Joel Becker0cf2f762009-02-12 16:41:25 -0800727 return __ocfs2_journal_access(handle, ci, bh, &di_triggers, type);
Joel Becker50655ae2008-09-11 15:53:07 -0700728}
729
Joel Becker0cf2f762009-02-12 16:41:25 -0800730int ocfs2_journal_access_eb(handle_t *handle, struct ocfs2_caching_info *ci,
Joel Becker50655ae2008-09-11 15:53:07 -0700731 struct buffer_head *bh, int type)
732{
Joel Becker0cf2f762009-02-12 16:41:25 -0800733 return __ocfs2_journal_access(handle, ci, bh, &eb_triggers, type);
Joel Becker50655ae2008-09-11 15:53:07 -0700734}
735
Tao Ma93c97082009-08-18 11:19:20 +0800736int ocfs2_journal_access_rb(handle_t *handle, struct ocfs2_caching_info *ci,
737 struct buffer_head *bh, int type)
738{
739 return __ocfs2_journal_access(handle, ci, bh, &rb_triggers,
740 type);
741}
742
Joel Becker0cf2f762009-02-12 16:41:25 -0800743int ocfs2_journal_access_gd(handle_t *handle, struct ocfs2_caching_info *ci,
Joel Becker50655ae2008-09-11 15:53:07 -0700744 struct buffer_head *bh, int type)
745{
Joel Becker0cf2f762009-02-12 16:41:25 -0800746 return __ocfs2_journal_access(handle, ci, bh, &gd_triggers, type);
Joel Becker50655ae2008-09-11 15:53:07 -0700747}
748
Joel Becker0cf2f762009-02-12 16:41:25 -0800749int ocfs2_journal_access_db(handle_t *handle, struct ocfs2_caching_info *ci,
Joel Becker50655ae2008-09-11 15:53:07 -0700750 struct buffer_head *bh, int type)
751{
Joel Becker0cf2f762009-02-12 16:41:25 -0800752 return __ocfs2_journal_access(handle, ci, bh, &db_triggers, type);
Joel Becker50655ae2008-09-11 15:53:07 -0700753}
754
Joel Becker0cf2f762009-02-12 16:41:25 -0800755int ocfs2_journal_access_xb(handle_t *handle, struct ocfs2_caching_info *ci,
Joel Becker50655ae2008-09-11 15:53:07 -0700756 struct buffer_head *bh, int type)
757{
Joel Becker0cf2f762009-02-12 16:41:25 -0800758 return __ocfs2_journal_access(handle, ci, bh, &xb_triggers, type);
Joel Becker50655ae2008-09-11 15:53:07 -0700759}
760
Joel Becker0cf2f762009-02-12 16:41:25 -0800761int ocfs2_journal_access_dq(handle_t *handle, struct ocfs2_caching_info *ci,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800762 struct buffer_head *bh, int type)
763{
Joel Becker0cf2f762009-02-12 16:41:25 -0800764 return __ocfs2_journal_access(handle, ci, bh, &dq_triggers, type);
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800765}
766
Joel Becker0cf2f762009-02-12 16:41:25 -0800767int ocfs2_journal_access_dr(handle_t *handle, struct ocfs2_caching_info *ci,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800768 struct buffer_head *bh, int type)
769{
Joel Becker0cf2f762009-02-12 16:41:25 -0800770 return __ocfs2_journal_access(handle, ci, bh, &dr_triggers, type);
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800771}
772
Joel Becker0cf2f762009-02-12 16:41:25 -0800773int ocfs2_journal_access_dl(handle_t *handle, struct ocfs2_caching_info *ci,
774 struct buffer_head *bh, int type)
775{
776 return __ocfs2_journal_access(handle, ci, bh, &dl_triggers, type);
777}
778
779int ocfs2_journal_access(handle_t *handle, struct ocfs2_caching_info *ci,
Joel Becker50655ae2008-09-11 15:53:07 -0700780 struct buffer_head *bh, int type)
781{
Joel Becker0cf2f762009-02-12 16:41:25 -0800782 return __ocfs2_journal_access(handle, ci, bh, NULL, type);
Joel Becker50655ae2008-09-11 15:53:07 -0700783}
784
Joel Beckerec20cec2010-03-19 14:13:52 -0700785void ocfs2_journal_dirty(handle_t *handle, struct buffer_head *bh)
Mark Fashehccd979b2005-12-15 14:31:24 -0800786{
787 int status;
788
Tao Mab4107952011-02-24 14:15:35 +0800789 trace_ocfs2_journal_dirty((unsigned long long)bh->b_blocknr);
Mark Fashehccd979b2005-12-15 14:31:24 -0800790
Joel Becker2b4e30f2008-09-03 20:03:41 -0700791 status = jbd2_journal_dirty_metadata(handle, bh);
Joseph Qie272e7f2015-06-24 16:55:12 -0700792 if (status) {
793 mlog_errno(status);
794 if (!is_handle_aborted(handle)) {
795 journal_t *journal = handle->h_transaction->t_journal;
796 struct super_block *sb = bh->b_bdev->bd_super;
797
798 mlog(ML_ERROR, "jbd2_journal_dirty_metadata failed. "
799 "Aborting transaction and journal.\n");
800 handle->h_err = status;
801 jbd2_journal_abort_handle(handle);
802 jbd2_journal_abort(journal, status);
803 ocfs2_abort(sb, "Journal already aborted.\n");
804 }
805 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800806}
807
Joel Becker2b4e30f2008-09-03 20:03:41 -0700808#define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * JBD2_DEFAULT_MAX_COMMIT_AGE)
Mark Fashehccd979b2005-12-15 14:31:24 -0800809
810void ocfs2_set_journal_params(struct ocfs2_super *osb)
811{
812 journal_t *journal = osb->journal->j_journal;
Mark Fashehd147b3d2007-11-07 14:40:36 -0800813 unsigned long commit_interval = OCFS2_DEFAULT_COMMIT_INTERVAL;
814
815 if (osb->osb_commit_interval)
816 commit_interval = osb->osb_commit_interval;
Mark Fashehccd979b2005-12-15 14:31:24 -0800817
Theodore Ts'oa931da62010-08-03 21:35:12 -0400818 write_lock(&journal->j_state_lock);
Mark Fashehd147b3d2007-11-07 14:40:36 -0800819 journal->j_commit_interval = commit_interval;
Mark Fashehccd979b2005-12-15 14:31:24 -0800820 if (osb->s_mount_opt & OCFS2_MOUNT_BARRIER)
Joel Becker2b4e30f2008-09-03 20:03:41 -0700821 journal->j_flags |= JBD2_BARRIER;
Mark Fashehccd979b2005-12-15 14:31:24 -0800822 else
Joel Becker2b4e30f2008-09-03 20:03:41 -0700823 journal->j_flags &= ~JBD2_BARRIER;
Theodore Ts'oa931da62010-08-03 21:35:12 -0400824 write_unlock(&journal->j_state_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -0800825}
826
827int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty)
828{
829 int status = -1;
830 struct inode *inode = NULL; /* the journal inode */
831 journal_t *j_journal = NULL;
832 struct ocfs2_dinode *di = NULL;
833 struct buffer_head *bh = NULL;
834 struct ocfs2_super *osb;
Mark Fashehe63aecb62007-10-18 15:30:42 -0700835 int inode_lock = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -0800836
Mark Fashehccd979b2005-12-15 14:31:24 -0800837 BUG_ON(!journal);
838
839 osb = journal->j_osb;
840
841 /* already have the inode for our journal */
842 inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE,
843 osb->slot_num);
844 if (inode == NULL) {
845 status = -EACCES;
846 mlog_errno(status);
847 goto done;
848 }
849 if (is_bad_inode(inode)) {
850 mlog(ML_ERROR, "access error (bad inode)\n");
851 iput(inode);
852 inode = NULL;
853 status = -EACCES;
854 goto done;
855 }
856
857 SET_INODE_JOURNAL(inode);
858 OCFS2_I(inode)->ip_open_count++;
859
Mark Fasheh6eff5792006-01-18 10:31:47 -0800860 /* Skip recovery waits here - journal inode metadata never
861 * changes in a live cluster so it can be considered an
862 * exception to the rule. */
Mark Fashehe63aecb62007-10-18 15:30:42 -0700863 status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY);
Mark Fashehccd979b2005-12-15 14:31:24 -0800864 if (status < 0) {
865 if (status != -ERESTARTSYS)
866 mlog(ML_ERROR, "Could not get lock on journal!\n");
867 goto done;
868 }
869
Mark Fashehe63aecb62007-10-18 15:30:42 -0700870 inode_lock = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -0800871 di = (struct ocfs2_dinode *)bh->b_data;
872
Junxiao Bif17c20d2013-09-11 14:19:45 -0700873 if (i_size_read(inode) < OCFS2_MIN_JOURNAL_SIZE) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800874 mlog(ML_ERROR, "Journal file size (%lld) is too small!\n",
Junxiao Bif17c20d2013-09-11 14:19:45 -0700875 i_size_read(inode));
Mark Fashehccd979b2005-12-15 14:31:24 -0800876 status = -EINVAL;
877 goto done;
878 }
879
Junxiao Bif17c20d2013-09-11 14:19:45 -0700880 trace_ocfs2_journal_init(i_size_read(inode),
Tao Mab4107952011-02-24 14:15:35 +0800881 (unsigned long long)inode->i_blocks,
882 OCFS2_I(inode)->ip_clusters);
Mark Fashehccd979b2005-12-15 14:31:24 -0800883
884 /* call the kernels journal init function now */
Joel Becker2b4e30f2008-09-03 20:03:41 -0700885 j_journal = jbd2_journal_init_inode(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800886 if (j_journal == NULL) {
887 mlog(ML_ERROR, "Linux journal layer error\n");
888 status = -EINVAL;
889 goto done;
890 }
891
Tao Mab4107952011-02-24 14:15:35 +0800892 trace_ocfs2_journal_init_maxlen(j_journal->j_maxlen);
Mark Fashehccd979b2005-12-15 14:31:24 -0800893
894 *dirty = (le32_to_cpu(di->id1.journal1.ij_flags) &
895 OCFS2_JOURNAL_DIRTY_FL);
896
897 journal->j_journal = j_journal;
898 journal->j_inode = inode;
899 journal->j_bh = bh;
900
901 ocfs2_set_journal_params(osb);
902
903 journal->j_state = OCFS2_JOURNAL_LOADED;
904
905 status = 0;
906done:
907 if (status < 0) {
Mark Fashehe63aecb62007-10-18 15:30:42 -0700908 if (inode_lock)
909 ocfs2_inode_unlock(inode, 1);
Mark Fasheha81cb882008-10-07 14:25:16 -0700910 brelse(bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800911 if (inode) {
912 OCFS2_I(inode)->ip_open_count--;
913 iput(inode);
914 }
915 }
916
Mark Fashehccd979b2005-12-15 14:31:24 -0800917 return status;
918}
919
Sunil Mushran539d8262008-07-14 17:31:10 -0700920static void ocfs2_bump_recovery_generation(struct ocfs2_dinode *di)
921{
922 le32_add_cpu(&(di->id1.journal1.ij_recovery_generation), 1);
923}
924
925static u32 ocfs2_get_recovery_generation(struct ocfs2_dinode *di)
926{
927 return le32_to_cpu(di->id1.journal1.ij_recovery_generation);
928}
929
Mark Fashehccd979b2005-12-15 14:31:24 -0800930static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb,
Sunil Mushran539d8262008-07-14 17:31:10 -0700931 int dirty, int replayed)
Mark Fashehccd979b2005-12-15 14:31:24 -0800932{
933 int status;
934 unsigned int flags;
935 struct ocfs2_journal *journal = osb->journal;
936 struct buffer_head *bh = journal->j_bh;
937 struct ocfs2_dinode *fe;
938
Mark Fashehccd979b2005-12-15 14:31:24 -0800939 fe = (struct ocfs2_dinode *)bh->b_data;
Joel Becker10995aa2008-11-13 14:49:12 -0800940
941 /* The journal bh on the osb always comes from ocfs2_journal_init()
942 * and was validated there inside ocfs2_inode_lock_full(). It's a
943 * code bug if we mess it up. */
944 BUG_ON(!OCFS2_IS_VALID_DINODE(fe));
Mark Fashehccd979b2005-12-15 14:31:24 -0800945
946 flags = le32_to_cpu(fe->id1.journal1.ij_flags);
947 if (dirty)
948 flags |= OCFS2_JOURNAL_DIRTY_FL;
949 else
950 flags &= ~OCFS2_JOURNAL_DIRTY_FL;
951 fe->id1.journal1.ij_flags = cpu_to_le32(flags);
952
Sunil Mushran539d8262008-07-14 17:31:10 -0700953 if (replayed)
954 ocfs2_bump_recovery_generation(fe);
955
Joel Becker13723d02008-10-17 19:25:01 -0700956 ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check);
Joel Becker8cb471e2009-02-10 20:00:41 -0800957 status = ocfs2_write_block(osb, bh, INODE_CACHE(journal->j_inode));
Mark Fashehccd979b2005-12-15 14:31:24 -0800958 if (status < 0)
959 mlog_errno(status);
960
Mark Fashehccd979b2005-12-15 14:31:24 -0800961 return status;
962}
963
964/*
965 * If the journal has been kmalloc'd it needs to be freed after this
966 * call.
967 */
968void ocfs2_journal_shutdown(struct ocfs2_super *osb)
969{
970 struct ocfs2_journal *journal = NULL;
971 int status = 0;
972 struct inode *inode = NULL;
973 int num_running_trans = 0;
974
Eric Sesterhenn / snakebyteebdec832006-01-27 10:32:52 +0100975 BUG_ON(!osb);
Mark Fashehccd979b2005-12-15 14:31:24 -0800976
977 journal = osb->journal;
978 if (!journal)
979 goto done;
980
981 inode = journal->j_inode;
982
983 if (journal->j_state != OCFS2_JOURNAL_LOADED)
984 goto done;
985
Joel Becker2b4e30f2008-09-03 20:03:41 -0700986 /* need to inc inode use count - jbd2_journal_destroy will iput. */
Mark Fashehccd979b2005-12-15 14:31:24 -0800987 if (!igrab(inode))
988 BUG();
989
990 num_running_trans = atomic_read(&(osb->journal->j_num_trans));
Tao Mab4107952011-02-24 14:15:35 +0800991 trace_ocfs2_journal_shutdown(num_running_trans);
Mark Fashehccd979b2005-12-15 14:31:24 -0800992
993 /* Do a commit_cache here. It will flush our journal, *and*
994 * release any locks that are still held.
995 * set the SHUTDOWN flag and release the trans lock.
996 * the commit thread will take the trans lock for us below. */
997 journal->j_state = OCFS2_JOURNAL_IN_SHUTDOWN;
998
999 /* The OCFS2_JOURNAL_IN_SHUTDOWN will signal to commit_cache to not
1000 * drop the trans_lock (which we want to hold until we
1001 * completely destroy the journal. */
1002 if (osb->commit_task) {
1003 /* Wait for the commit thread */
Tao Mab4107952011-02-24 14:15:35 +08001004 trace_ocfs2_journal_shutdown_wait(osb->commit_task);
Mark Fashehccd979b2005-12-15 14:31:24 -08001005 kthread_stop(osb->commit_task);
1006 osb->commit_task = NULL;
1007 }
1008
1009 BUG_ON(atomic_read(&(osb->journal->j_num_trans)) != 0);
1010
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001011 if (ocfs2_mount_local(osb)) {
Joel Becker2b4e30f2008-09-03 20:03:41 -07001012 jbd2_journal_lock_updates(journal->j_journal);
1013 status = jbd2_journal_flush(journal->j_journal);
1014 jbd2_journal_unlock_updates(journal->j_journal);
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001015 if (status < 0)
1016 mlog_errno(status);
1017 }
1018
1019 if (status == 0) {
1020 /*
1021 * Do not toggle if flush was unsuccessful otherwise
1022 * will leave dirty metadata in a "clean" journal
1023 */
Sunil Mushran539d8262008-07-14 17:31:10 -07001024 status = ocfs2_journal_toggle_dirty(osb, 0, 0);
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001025 if (status < 0)
1026 mlog_errno(status);
1027 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001028
1029 /* Shutdown the kernel journal system */
Joel Becker2b4e30f2008-09-03 20:03:41 -07001030 jbd2_journal_destroy(journal->j_journal);
Sunil Mushranae0dff62008-10-22 13:24:29 -07001031 journal->j_journal = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001032
1033 OCFS2_I(inode)->ip_open_count--;
1034
1035 /* unlock our journal */
Mark Fashehe63aecb62007-10-18 15:30:42 -07001036 ocfs2_inode_unlock(inode, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001037
1038 brelse(journal->j_bh);
1039 journal->j_bh = NULL;
1040
1041 journal->j_state = OCFS2_JOURNAL_FREE;
1042
1043// up_write(&journal->j_trans_barrier);
1044done:
1045 if (inode)
1046 iput(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001047}
1048
1049static void ocfs2_clear_journal_error(struct super_block *sb,
1050 journal_t *journal,
1051 int slot)
1052{
1053 int olderr;
1054
Joel Becker2b4e30f2008-09-03 20:03:41 -07001055 olderr = jbd2_journal_errno(journal);
Mark Fashehccd979b2005-12-15 14:31:24 -08001056 if (olderr) {
1057 mlog(ML_ERROR, "File system error %d recorded in "
1058 "journal %u.\n", olderr, slot);
1059 mlog(ML_ERROR, "File system on device %s needs checking.\n",
1060 sb->s_id);
1061
Joel Becker2b4e30f2008-09-03 20:03:41 -07001062 jbd2_journal_ack_err(journal);
1063 jbd2_journal_clear_err(journal);
Mark Fashehccd979b2005-12-15 14:31:24 -08001064 }
1065}
1066
Sunil Mushran539d8262008-07-14 17:31:10 -07001067int ocfs2_journal_load(struct ocfs2_journal *journal, int local, int replayed)
Mark Fashehccd979b2005-12-15 14:31:24 -08001068{
1069 int status = 0;
1070 struct ocfs2_super *osb;
1071
Julia Lawallb1f35502008-03-04 15:21:05 -08001072 BUG_ON(!journal);
Mark Fashehccd979b2005-12-15 14:31:24 -08001073
1074 osb = journal->j_osb;
1075
Joel Becker2b4e30f2008-09-03 20:03:41 -07001076 status = jbd2_journal_load(journal->j_journal);
Mark Fashehccd979b2005-12-15 14:31:24 -08001077 if (status < 0) {
1078 mlog(ML_ERROR, "Failed to load journal!\n");
1079 goto done;
1080 }
1081
1082 ocfs2_clear_journal_error(osb->sb, journal->j_journal, osb->slot_num);
1083
Sunil Mushran539d8262008-07-14 17:31:10 -07001084 status = ocfs2_journal_toggle_dirty(osb, 1, replayed);
Mark Fashehccd979b2005-12-15 14:31:24 -08001085 if (status < 0) {
1086 mlog_errno(status);
1087 goto done;
1088 }
1089
1090 /* Launch the commit thread */
Sunil Mushranc271c5c2006-12-05 17:56:35 -08001091 if (!local) {
1092 osb->commit_task = kthread_run(ocfs2_commit_thread, osb,
1093 "ocfs2cmt");
1094 if (IS_ERR(osb->commit_task)) {
1095 status = PTR_ERR(osb->commit_task);
1096 osb->commit_task = NULL;
1097 mlog(ML_ERROR, "unable to launch ocfs2commit thread, "
1098 "error=%d", status);
1099 goto done;
1100 }
1101 } else
Mark Fashehccd979b2005-12-15 14:31:24 -08001102 osb->commit_task = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001103
1104done:
Mark Fashehccd979b2005-12-15 14:31:24 -08001105 return status;
1106}
1107
1108
1109/* 'full' flag tells us whether we clear out all blocks or if we just
1110 * mark the journal clean */
1111int ocfs2_journal_wipe(struct ocfs2_journal *journal, int full)
1112{
1113 int status;
1114
Eric Sesterhenn / snakebyteebdec832006-01-27 10:32:52 +01001115 BUG_ON(!journal);
Mark Fashehccd979b2005-12-15 14:31:24 -08001116
Joel Becker2b4e30f2008-09-03 20:03:41 -07001117 status = jbd2_journal_wipe(journal->j_journal, full);
Mark Fashehccd979b2005-12-15 14:31:24 -08001118 if (status < 0) {
1119 mlog_errno(status);
1120 goto bail;
1121 }
1122
Sunil Mushran539d8262008-07-14 17:31:10 -07001123 status = ocfs2_journal_toggle_dirty(journal->j_osb, 0, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001124 if (status < 0)
1125 mlog_errno(status);
1126
1127bail:
Mark Fashehccd979b2005-12-15 14:31:24 -08001128 return status;
1129}
1130
Joel Becker553abd02008-02-01 12:03:57 -08001131static int ocfs2_recovery_completed(struct ocfs2_super *osb)
1132{
1133 int empty;
1134 struct ocfs2_recovery_map *rm = osb->recovery_map;
1135
1136 spin_lock(&osb->osb_lock);
1137 empty = (rm->rm_used == 0);
1138 spin_unlock(&osb->osb_lock);
1139
1140 return empty;
1141}
1142
1143void ocfs2_wait_for_recovery(struct ocfs2_super *osb)
1144{
1145 wait_event(osb->recovery_event, ocfs2_recovery_completed(osb));
1146}
1147
Mark Fashehccd979b2005-12-15 14:31:24 -08001148/*
1149 * JBD Might read a cached version of another nodes journal file. We
1150 * don't want this as this file changes often and we get no
1151 * notification on those changes. The only way to be sure that we've
1152 * got the most up to date version of those blocks then is to force
1153 * read them off disk. Just searching through the buffer cache won't
1154 * work as there may be pages backing this file which are still marked
1155 * up to date. We know things can't change on this file underneath us
1156 * as we have the lock by now :)
1157 */
1158static int ocfs2_force_read_journal(struct inode *inode)
1159{
1160 int status = 0;
Mark Fasheh4f902c32007-03-09 16:26:50 -08001161 int i;
Mark Fasheh8110b072007-03-22 16:53:23 -07001162 u64 v_blkno, p_blkno, p_blocks, num_blocks;
Mark Fasheh4f902c32007-03-09 16:26:50 -08001163#define CONCURRENT_JOURNAL_FILL 32ULL
Mark Fashehccd979b2005-12-15 14:31:24 -08001164 struct buffer_head *bhs[CONCURRENT_JOURNAL_FILL];
1165
Mark Fashehccd979b2005-12-15 14:31:24 -08001166 memset(bhs, 0, sizeof(struct buffer_head *) * CONCURRENT_JOURNAL_FILL);
1167
Junxiao Bif17c20d2013-09-11 14:19:45 -07001168 num_blocks = ocfs2_blocks_for_bytes(inode->i_sb, i_size_read(inode));
Mark Fashehccd979b2005-12-15 14:31:24 -08001169 v_blkno = 0;
Mark Fasheh8110b072007-03-22 16:53:23 -07001170 while (v_blkno < num_blocks) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001171 status = ocfs2_extent_map_get_blocks(inode, v_blkno,
Mark Fasheh49cb8d22007-03-09 16:21:46 -08001172 &p_blkno, &p_blocks, NULL);
Mark Fashehccd979b2005-12-15 14:31:24 -08001173 if (status < 0) {
1174 mlog_errno(status);
1175 goto bail;
1176 }
1177
1178 if (p_blocks > CONCURRENT_JOURNAL_FILL)
1179 p_blocks = CONCURRENT_JOURNAL_FILL;
1180
Mark Fashehdd4a2c22006-04-12 14:24:05 -07001181 /* We are reading journal data which should not
1182 * be put in the uptodate cache */
Joel Beckerda1e9092008-10-09 17:20:29 -07001183 status = ocfs2_read_blocks_sync(OCFS2_SB(inode->i_sb),
1184 p_blkno, p_blocks, bhs);
Mark Fashehccd979b2005-12-15 14:31:24 -08001185 if (status < 0) {
1186 mlog_errno(status);
1187 goto bail;
1188 }
1189
1190 for(i = 0; i < p_blocks; i++) {
1191 brelse(bhs[i]);
1192 bhs[i] = NULL;
1193 }
1194
1195 v_blkno += p_blocks;
1196 }
1197
1198bail:
1199 for(i = 0; i < CONCURRENT_JOURNAL_FILL; i++)
Mark Fasheha81cb882008-10-07 14:25:16 -07001200 brelse(bhs[i]);
Mark Fashehccd979b2005-12-15 14:31:24 -08001201 return status;
1202}
1203
1204struct ocfs2_la_recovery_item {
1205 struct list_head lri_list;
1206 int lri_slot;
1207 struct ocfs2_dinode *lri_la_dinode;
1208 struct ocfs2_dinode *lri_tl_dinode;
Jan Kara22053632008-10-20 23:50:38 +02001209 struct ocfs2_quota_recovery *lri_qrec;
Joseph Qied460cf2015-02-16 15:59:57 -08001210 enum ocfs2_orphan_reco_type lri_orphan_reco_type;
Mark Fashehccd979b2005-12-15 14:31:24 -08001211};
1212
1213/* Does the second half of the recovery process. By this point, the
1214 * node is marked clean and can actually be considered recovered,
1215 * hence it's no longer in the recovery map, but there's still some
1216 * cleanup we can do which shouldn't happen within the recovery thread
1217 * as locking in that context becomes very difficult if we are to take
1218 * recovering nodes into account.
1219 *
1220 * NOTE: This function can and will sleep on recovery of other nodes
1221 * during cluster locking, just like any other ocfs2 process.
1222 */
David Howellsc4028952006-11-22 14:57:56 +00001223void ocfs2_complete_recovery(struct work_struct *work)
Mark Fashehccd979b2005-12-15 14:31:24 -08001224{
Tao Mab4107952011-02-24 14:15:35 +08001225 int ret = 0;
David Howellsc4028952006-11-22 14:57:56 +00001226 struct ocfs2_journal *journal =
1227 container_of(work, struct ocfs2_journal, j_recovery_work);
1228 struct ocfs2_super *osb = journal->j_osb;
Mark Fashehccd979b2005-12-15 14:31:24 -08001229 struct ocfs2_dinode *la_dinode, *tl_dinode;
Christoph Hellwig800deef2007-05-17 16:03:13 +02001230 struct ocfs2_la_recovery_item *item, *n;
Jan Kara22053632008-10-20 23:50:38 +02001231 struct ocfs2_quota_recovery *qrec;
Joseph Qied460cf2015-02-16 15:59:57 -08001232 enum ocfs2_orphan_reco_type orphan_reco_type;
Mark Fashehccd979b2005-12-15 14:31:24 -08001233 LIST_HEAD(tmp_la_list);
1234
Tao Mab4107952011-02-24 14:15:35 +08001235 trace_ocfs2_complete_recovery(
1236 (unsigned long long)OCFS2_I(journal->j_inode)->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001237
1238 spin_lock(&journal->j_lock);
1239 list_splice_init(&journal->j_la_cleanups, &tmp_la_list);
1240 spin_unlock(&journal->j_lock);
1241
Christoph Hellwig800deef2007-05-17 16:03:13 +02001242 list_for_each_entry_safe(item, n, &tmp_la_list, lri_list) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001243 list_del_init(&item->lri_list);
1244
Jan Kara19ece542008-08-21 20:13:17 +02001245 ocfs2_wait_on_quotas(osb);
1246
Mark Fashehccd979b2005-12-15 14:31:24 -08001247 la_dinode = item->lri_la_dinode;
Tao Mab4107952011-02-24 14:15:35 +08001248 tl_dinode = item->lri_tl_dinode;
1249 qrec = item->lri_qrec;
Joseph Qied460cf2015-02-16 15:59:57 -08001250 orphan_reco_type = item->lri_orphan_reco_type;
Mark Fashehccd979b2005-12-15 14:31:24 -08001251
Tao Mab4107952011-02-24 14:15:35 +08001252 trace_ocfs2_complete_recovery_slot(item->lri_slot,
1253 la_dinode ? le64_to_cpu(la_dinode->i_blkno) : 0,
1254 tl_dinode ? le64_to_cpu(tl_dinode->i_blkno) : 0,
1255 qrec);
1256
1257 if (la_dinode) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001258 ret = ocfs2_complete_local_alloc_recovery(osb,
1259 la_dinode);
1260 if (ret < 0)
1261 mlog_errno(ret);
1262
1263 kfree(la_dinode);
1264 }
1265
Mark Fashehccd979b2005-12-15 14:31:24 -08001266 if (tl_dinode) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001267 ret = ocfs2_complete_truncate_log_recovery(osb,
1268 tl_dinode);
1269 if (ret < 0)
1270 mlog_errno(ret);
1271
1272 kfree(tl_dinode);
1273 }
1274
Joseph Qied460cf2015-02-16 15:59:57 -08001275 ret = ocfs2_recover_orphans(osb, item->lri_slot,
1276 orphan_reco_type);
Mark Fashehccd979b2005-12-15 14:31:24 -08001277 if (ret < 0)
1278 mlog_errno(ret);
1279
Jan Kara22053632008-10-20 23:50:38 +02001280 if (qrec) {
Jan Kara22053632008-10-20 23:50:38 +02001281 ret = ocfs2_finish_quota_recovery(osb, qrec,
1282 item->lri_slot);
1283 if (ret < 0)
1284 mlog_errno(ret);
1285 /* Recovery info is already freed now */
1286 }
1287
Mark Fashehccd979b2005-12-15 14:31:24 -08001288 kfree(item);
1289 }
1290
Tao Mab4107952011-02-24 14:15:35 +08001291 trace_ocfs2_complete_recovery_end(ret);
Mark Fashehccd979b2005-12-15 14:31:24 -08001292}
1293
1294/* NOTE: This function always eats your references to la_dinode and
1295 * tl_dinode, either manually on error, or by passing them to
1296 * ocfs2_complete_recovery */
1297static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal,
1298 int slot_num,
1299 struct ocfs2_dinode *la_dinode,
Jan Kara22053632008-10-20 23:50:38 +02001300 struct ocfs2_dinode *tl_dinode,
Joseph Qied460cf2015-02-16 15:59:57 -08001301 struct ocfs2_quota_recovery *qrec,
1302 enum ocfs2_orphan_reco_type orphan_reco_type)
Mark Fashehccd979b2005-12-15 14:31:24 -08001303{
1304 struct ocfs2_la_recovery_item *item;
1305
Sunil Mushranafae00ab2006-04-12 14:37:00 -07001306 item = kmalloc(sizeof(struct ocfs2_la_recovery_item), GFP_NOFS);
Mark Fashehccd979b2005-12-15 14:31:24 -08001307 if (!item) {
1308 /* Though we wish to avoid it, we are in fact safe in
1309 * skipping local alloc cleanup as fsck.ocfs2 is more
1310 * than capable of reclaiming unused space. */
Tim Gardnerd787ab02013-02-21 16:42:44 -08001311 kfree(la_dinode);
1312 kfree(tl_dinode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001313
Jan Kara22053632008-10-20 23:50:38 +02001314 if (qrec)
1315 ocfs2_free_quota_recovery(qrec);
1316
Mark Fashehccd979b2005-12-15 14:31:24 -08001317 mlog_errno(-ENOMEM);
1318 return;
1319 }
1320
1321 INIT_LIST_HEAD(&item->lri_list);
1322 item->lri_la_dinode = la_dinode;
1323 item->lri_slot = slot_num;
1324 item->lri_tl_dinode = tl_dinode;
Jan Kara22053632008-10-20 23:50:38 +02001325 item->lri_qrec = qrec;
Joseph Qied460cf2015-02-16 15:59:57 -08001326 item->lri_orphan_reco_type = orphan_reco_type;
Mark Fashehccd979b2005-12-15 14:31:24 -08001327
1328 spin_lock(&journal->j_lock);
1329 list_add_tail(&item->lri_list, &journal->j_la_cleanups);
1330 queue_work(ocfs2_wq, &journal->j_recovery_work);
1331 spin_unlock(&journal->j_lock);
1332}
1333
1334/* Called by the mount code to queue recovery the last part of
Srinivas Eeda9140db02009-03-06 14:21:46 -08001335 * recovery for it's own and offline slot(s). */
Mark Fashehccd979b2005-12-15 14:31:24 -08001336void ocfs2_complete_mount_recovery(struct ocfs2_super *osb)
1337{
1338 struct ocfs2_journal *journal = osb->journal;
1339
Sunil Mushran10b3dd72011-05-04 10:28:02 -07001340 if (ocfs2_is_hard_readonly(osb))
1341 return;
1342
Srinivas Eeda9140db02009-03-06 14:21:46 -08001343 /* No need to queue up our truncate_log as regular cleanup will catch
1344 * that */
1345 ocfs2_queue_recovery_completion(journal, osb->slot_num,
Joseph Qied460cf2015-02-16 15:59:57 -08001346 osb->local_alloc_copy, NULL, NULL,
1347 ORPHAN_NEED_TRUNCATE);
Srinivas Eeda9140db02009-03-06 14:21:46 -08001348 ocfs2_schedule_truncate_log_flush(osb, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001349
Srinivas Eeda9140db02009-03-06 14:21:46 -08001350 osb->local_alloc_copy = NULL;
1351 osb->dirty = 0;
1352
1353 /* queue to recover orphan slots for all offline slots */
1354 ocfs2_replay_map_set_state(osb, REPLAY_NEEDED);
Joseph Qied460cf2015-02-16 15:59:57 -08001355 ocfs2_queue_replay_slots(osb, ORPHAN_NEED_TRUNCATE);
Srinivas Eeda9140db02009-03-06 14:21:46 -08001356 ocfs2_free_replay_slots(osb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001357}
1358
Jan Kara22053632008-10-20 23:50:38 +02001359void ocfs2_complete_quota_recovery(struct ocfs2_super *osb)
1360{
1361 if (osb->quota_rec) {
1362 ocfs2_queue_recovery_completion(osb->journal,
1363 osb->slot_num,
1364 NULL,
1365 NULL,
Joseph Qied460cf2015-02-16 15:59:57 -08001366 osb->quota_rec,
1367 ORPHAN_NEED_TRUNCATE);
Jan Kara22053632008-10-20 23:50:38 +02001368 osb->quota_rec = NULL;
1369 }
1370}
1371
Mark Fashehccd979b2005-12-15 14:31:24 -08001372static int __ocfs2_recovery_thread(void *arg)
1373{
Jan Kara22053632008-10-20 23:50:38 +02001374 int status, node_num, slot_num;
Mark Fashehccd979b2005-12-15 14:31:24 -08001375 struct ocfs2_super *osb = arg;
Joel Becker553abd02008-02-01 12:03:57 -08001376 struct ocfs2_recovery_map *rm = osb->recovery_map;
Jan Kara22053632008-10-20 23:50:38 +02001377 int *rm_quota = NULL;
1378 int rm_quota_used = 0, i;
1379 struct ocfs2_quota_recovery *qrec;
Mark Fashehccd979b2005-12-15 14:31:24 -08001380
Mark Fashehccd979b2005-12-15 14:31:24 -08001381 status = ocfs2_wait_on_mount(osb);
1382 if (status < 0) {
1383 goto bail;
1384 }
1385
Jan Kara22053632008-10-20 23:50:38 +02001386 rm_quota = kzalloc(osb->max_slots * sizeof(int), GFP_NOFS);
1387 if (!rm_quota) {
1388 status = -ENOMEM;
1389 goto bail;
1390 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001391restart:
1392 status = ocfs2_super_lock(osb, 1);
1393 if (status < 0) {
1394 mlog_errno(status);
1395 goto bail;
1396 }
1397
Srinivas Eeda9140db02009-03-06 14:21:46 -08001398 status = ocfs2_compute_replay_slots(osb);
1399 if (status < 0)
1400 mlog_errno(status);
1401
1402 /* queue recovery for our own slot */
1403 ocfs2_queue_recovery_completion(osb->journal, osb->slot_num, NULL,
Joseph Qied460cf2015-02-16 15:59:57 -08001404 NULL, NULL, ORPHAN_NO_NEED_TRUNCATE);
Srinivas Eeda9140db02009-03-06 14:21:46 -08001405
Joel Becker553abd02008-02-01 12:03:57 -08001406 spin_lock(&osb->osb_lock);
1407 while (rm->rm_used) {
1408 /* It's always safe to remove entry zero, as we won't
1409 * clear it until ocfs2_recover_node() has succeeded. */
1410 node_num = rm->rm_entries[0];
1411 spin_unlock(&osb->osb_lock);
Jan Kara22053632008-10-20 23:50:38 +02001412 slot_num = ocfs2_node_num_to_slot(osb, node_num);
Tao Mab4107952011-02-24 14:15:35 +08001413 trace_ocfs2_recovery_thread_node(node_num, slot_num);
Jan Kara22053632008-10-20 23:50:38 +02001414 if (slot_num == -ENOENT) {
1415 status = 0;
Jan Kara22053632008-10-20 23:50:38 +02001416 goto skip_recovery;
1417 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001418
Jan Kara22053632008-10-20 23:50:38 +02001419 /* It is a bit subtle with quota recovery. We cannot do it
1420 * immediately because we have to obtain cluster locks from
1421 * quota files and we also don't want to just skip it because
1422 * then quota usage would be out of sync until some node takes
1423 * the slot. So we remember which nodes need quota recovery
1424 * and when everything else is done, we recover quotas. */
1425 for (i = 0; i < rm_quota_used && rm_quota[i] != slot_num; i++);
1426 if (i == rm_quota_used)
1427 rm_quota[rm_quota_used++] = slot_num;
1428
1429 status = ocfs2_recover_node(osb, node_num, slot_num);
1430skip_recovery:
Joel Becker553abd02008-02-01 12:03:57 -08001431 if (!status) {
1432 ocfs2_recovery_map_clear(osb, node_num);
1433 } else {
Mark Fashehccd979b2005-12-15 14:31:24 -08001434 mlog(ML_ERROR,
1435 "Error %d recovering node %d on device (%u,%u)!\n",
1436 status, node_num,
1437 MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev));
1438 mlog(ML_ERROR, "Volume requires unmount.\n");
Mark Fashehccd979b2005-12-15 14:31:24 -08001439 }
1440
Joel Becker553abd02008-02-01 12:03:57 -08001441 spin_lock(&osb->osb_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -08001442 }
Joel Becker553abd02008-02-01 12:03:57 -08001443 spin_unlock(&osb->osb_lock);
Tao Mab4107952011-02-24 14:15:35 +08001444 trace_ocfs2_recovery_thread_end(status);
Joel Becker553abd02008-02-01 12:03:57 -08001445
Sunil Mushran539d8262008-07-14 17:31:10 -07001446 /* Refresh all journal recovery generations from disk */
1447 status = ocfs2_check_journals_nolocks(osb);
1448 status = (status == -EROFS) ? 0 : status;
1449 if (status < 0)
1450 mlog_errno(status);
1451
Jan Kara22053632008-10-20 23:50:38 +02001452 /* Now it is right time to recover quotas... We have to do this under
Lucas De Marchi25985ed2011-03-30 22:57:33 -03001453 * superblock lock so that no one can start using the slot (and crash)
Jan Kara22053632008-10-20 23:50:38 +02001454 * before we recover it */
1455 for (i = 0; i < rm_quota_used; i++) {
1456 qrec = ocfs2_begin_quota_recovery(osb, rm_quota[i]);
1457 if (IS_ERR(qrec)) {
1458 status = PTR_ERR(qrec);
1459 mlog_errno(status);
1460 continue;
1461 }
1462 ocfs2_queue_recovery_completion(osb->journal, rm_quota[i],
Joseph Qied460cf2015-02-16 15:59:57 -08001463 NULL, NULL, qrec,
1464 ORPHAN_NEED_TRUNCATE);
Jan Kara22053632008-10-20 23:50:38 +02001465 }
1466
Mark Fashehccd979b2005-12-15 14:31:24 -08001467 ocfs2_super_unlock(osb, 1);
1468
Srinivas Eeda9140db02009-03-06 14:21:46 -08001469 /* queue recovery for offline slots */
Joseph Qied460cf2015-02-16 15:59:57 -08001470 ocfs2_queue_replay_slots(osb, ORPHAN_NEED_TRUNCATE);
Mark Fashehccd979b2005-12-15 14:31:24 -08001471
1472bail:
Arjan van de Venc74ec2f2006-01-13 21:54:23 -08001473 mutex_lock(&osb->recovery_lock);
Joel Becker553abd02008-02-01 12:03:57 -08001474 if (!status && !ocfs2_recovery_completed(osb)) {
Arjan van de Venc74ec2f2006-01-13 21:54:23 -08001475 mutex_unlock(&osb->recovery_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -08001476 goto restart;
1477 }
1478
Srinivas Eeda9140db02009-03-06 14:21:46 -08001479 ocfs2_free_replay_slots(osb);
Mark Fashehccd979b2005-12-15 14:31:24 -08001480 osb->recovery_thread_task = NULL;
1481 mb(); /* sync with ocfs2_recovery_thread_running */
1482 wake_up(&osb->recovery_event);
1483
Arjan van de Venc74ec2f2006-01-13 21:54:23 -08001484 mutex_unlock(&osb->recovery_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -08001485
Tim Gardnerd787ab02013-02-21 16:42:44 -08001486 kfree(rm_quota);
Jan Kara22053632008-10-20 23:50:38 +02001487
Mark Fashehccd979b2005-12-15 14:31:24 -08001488 /* no one is callint kthread_stop() for us so the kthread() api
1489 * requires that we call do_exit(). And it isn't exported, but
1490 * complete_and_exit() seems to be a minimal wrapper around it. */
1491 complete_and_exit(NULL, status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001492}
1493
1494void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num)
1495{
Arjan van de Venc74ec2f2006-01-13 21:54:23 -08001496 mutex_lock(&osb->recovery_lock);
Tao Mab4107952011-02-24 14:15:35 +08001497
1498 trace_ocfs2_recovery_thread(node_num, osb->node_num,
1499 osb->disable_recovery, osb->recovery_thread_task,
1500 osb->disable_recovery ?
1501 -1 : ocfs2_recovery_map_set(osb, node_num));
1502
Mark Fashehccd979b2005-12-15 14:31:24 -08001503 if (osb->disable_recovery)
1504 goto out;
1505
Mark Fashehccd979b2005-12-15 14:31:24 -08001506 if (osb->recovery_thread_task)
1507 goto out;
1508
1509 osb->recovery_thread_task = kthread_run(__ocfs2_recovery_thread, osb,
Mark Fasheh78427042006-05-04 12:03:26 -07001510 "ocfs2rec");
Mark Fashehccd979b2005-12-15 14:31:24 -08001511 if (IS_ERR(osb->recovery_thread_task)) {
1512 mlog_errno((int)PTR_ERR(osb->recovery_thread_task));
1513 osb->recovery_thread_task = NULL;
1514 }
1515
1516out:
Arjan van de Venc74ec2f2006-01-13 21:54:23 -08001517 mutex_unlock(&osb->recovery_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -08001518 wake_up(&osb->recovery_event);
Mark Fashehccd979b2005-12-15 14:31:24 -08001519}
1520
Sunil Mushran539d8262008-07-14 17:31:10 -07001521static int ocfs2_read_journal_inode(struct ocfs2_super *osb,
1522 int slot_num,
1523 struct buffer_head **bh,
1524 struct inode **ret_inode)
1525{
1526 int status = -EACCES;
1527 struct inode *inode = NULL;
1528
1529 BUG_ON(slot_num >= osb->max_slots);
1530
1531 inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE,
1532 slot_num);
1533 if (!inode || is_bad_inode(inode)) {
1534 mlog_errno(status);
1535 goto bail;
1536 }
1537 SET_INODE_JOURNAL(inode);
1538
Joel Beckerb657c952008-11-13 14:49:11 -08001539 status = ocfs2_read_inode_block_full(inode, bh, OCFS2_BH_IGNORE_CACHE);
Sunil Mushran539d8262008-07-14 17:31:10 -07001540 if (status < 0) {
1541 mlog_errno(status);
1542 goto bail;
1543 }
1544
1545 status = 0;
1546
1547bail:
1548 if (inode) {
1549 if (status || !ret_inode)
1550 iput(inode);
1551 else
1552 *ret_inode = inode;
1553 }
1554 return status;
1555}
1556
Mark Fashehccd979b2005-12-15 14:31:24 -08001557/* Does the actual journal replay and marks the journal inode as
1558 * clean. Will only replay if the journal inode is marked dirty. */
1559static int ocfs2_replay_journal(struct ocfs2_super *osb,
1560 int node_num,
1561 int slot_num)
1562{
1563 int status;
1564 int got_lock = 0;
1565 unsigned int flags;
1566 struct inode *inode = NULL;
1567 struct ocfs2_dinode *fe;
1568 journal_t *journal = NULL;
1569 struct buffer_head *bh = NULL;
Sunil Mushran539d8262008-07-14 17:31:10 -07001570 u32 slot_reco_gen;
Mark Fashehccd979b2005-12-15 14:31:24 -08001571
Sunil Mushran539d8262008-07-14 17:31:10 -07001572 status = ocfs2_read_journal_inode(osb, slot_num, &bh, &inode);
1573 if (status) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001574 mlog_errno(status);
1575 goto done;
1576 }
Sunil Mushran539d8262008-07-14 17:31:10 -07001577
1578 fe = (struct ocfs2_dinode *)bh->b_data;
1579 slot_reco_gen = ocfs2_get_recovery_generation(fe);
1580 brelse(bh);
1581 bh = NULL;
1582
1583 /*
1584 * As the fs recovery is asynchronous, there is a small chance that
1585 * another node mounted (and recovered) the slot before the recovery
1586 * thread could get the lock. To handle that, we dirty read the journal
1587 * inode for that slot to get the recovery generation. If it is
1588 * different than what we expected, the slot has been recovered.
1589 * If not, it needs recovery.
1590 */
1591 if (osb->slot_recovery_generations[slot_num] != slot_reco_gen) {
Tao Mab4107952011-02-24 14:15:35 +08001592 trace_ocfs2_replay_journal_recovered(slot_num,
Sunil Mushran539d8262008-07-14 17:31:10 -07001593 osb->slot_recovery_generations[slot_num], slot_reco_gen);
1594 osb->slot_recovery_generations[slot_num] = slot_reco_gen;
1595 status = -EBUSY;
Mark Fashehccd979b2005-12-15 14:31:24 -08001596 goto done;
1597 }
Sunil Mushran539d8262008-07-14 17:31:10 -07001598
1599 /* Continue with recovery as the journal has not yet been recovered */
Mark Fashehccd979b2005-12-15 14:31:24 -08001600
Mark Fashehe63aecb62007-10-18 15:30:42 -07001601 status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY);
Mark Fashehccd979b2005-12-15 14:31:24 -08001602 if (status < 0) {
Tao Mab4107952011-02-24 14:15:35 +08001603 trace_ocfs2_replay_journal_lock_err(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001604 if (status != -ERESTARTSYS)
1605 mlog(ML_ERROR, "Could not lock journal!\n");
1606 goto done;
1607 }
1608 got_lock = 1;
1609
1610 fe = (struct ocfs2_dinode *) bh->b_data;
1611
1612 flags = le32_to_cpu(fe->id1.journal1.ij_flags);
Sunil Mushran539d8262008-07-14 17:31:10 -07001613 slot_reco_gen = ocfs2_get_recovery_generation(fe);
Mark Fashehccd979b2005-12-15 14:31:24 -08001614
1615 if (!(flags & OCFS2_JOURNAL_DIRTY_FL)) {
Tao Mab4107952011-02-24 14:15:35 +08001616 trace_ocfs2_replay_journal_skip(node_num);
Sunil Mushran539d8262008-07-14 17:31:10 -07001617 /* Refresh recovery generation for the slot */
1618 osb->slot_recovery_generations[slot_num] = slot_reco_gen;
Mark Fashehccd979b2005-12-15 14:31:24 -08001619 goto done;
1620 }
1621
Srinivas Eeda9140db02009-03-06 14:21:46 -08001622 /* we need to run complete recovery for offline orphan slots */
1623 ocfs2_replay_map_set_state(osb, REPLAY_NEEDED);
1624
Sunil Mushran619c2002011-07-24 10:34:54 -07001625 printk(KERN_NOTICE "ocfs2: Begin replay journal (node %d, slot %d) on "\
1626 "device (%u,%u)\n", node_num, slot_num, MAJOR(osb->sb->s_dev),
1627 MINOR(osb->sb->s_dev));
Mark Fashehccd979b2005-12-15 14:31:24 -08001628
1629 OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
1630
1631 status = ocfs2_force_read_journal(inode);
1632 if (status < 0) {
1633 mlog_errno(status);
1634 goto done;
1635 }
1636
Joel Becker2b4e30f2008-09-03 20:03:41 -07001637 journal = jbd2_journal_init_inode(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001638 if (journal == NULL) {
1639 mlog(ML_ERROR, "Linux journal layer error\n");
1640 status = -EIO;
1641 goto done;
1642 }
1643
Joel Becker2b4e30f2008-09-03 20:03:41 -07001644 status = jbd2_journal_load(journal);
Mark Fashehccd979b2005-12-15 14:31:24 -08001645 if (status < 0) {
1646 mlog_errno(status);
1647 if (!igrab(inode))
1648 BUG();
Joel Becker2b4e30f2008-09-03 20:03:41 -07001649 jbd2_journal_destroy(journal);
Mark Fashehccd979b2005-12-15 14:31:24 -08001650 goto done;
1651 }
1652
1653 ocfs2_clear_journal_error(osb->sb, journal, slot_num);
1654
1655 /* wipe the journal */
Joel Becker2b4e30f2008-09-03 20:03:41 -07001656 jbd2_journal_lock_updates(journal);
1657 status = jbd2_journal_flush(journal);
1658 jbd2_journal_unlock_updates(journal);
Mark Fashehccd979b2005-12-15 14:31:24 -08001659 if (status < 0)
1660 mlog_errno(status);
1661
1662 /* This will mark the node clean */
1663 flags = le32_to_cpu(fe->id1.journal1.ij_flags);
1664 flags &= ~OCFS2_JOURNAL_DIRTY_FL;
1665 fe->id1.journal1.ij_flags = cpu_to_le32(flags);
1666
Sunil Mushran539d8262008-07-14 17:31:10 -07001667 /* Increment recovery generation to indicate successful recovery */
1668 ocfs2_bump_recovery_generation(fe);
1669 osb->slot_recovery_generations[slot_num] =
1670 ocfs2_get_recovery_generation(fe);
1671
Joel Becker13723d02008-10-17 19:25:01 -07001672 ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check);
Joel Becker8cb471e2009-02-10 20:00:41 -08001673 status = ocfs2_write_block(osb, bh, INODE_CACHE(inode));
Mark Fashehccd979b2005-12-15 14:31:24 -08001674 if (status < 0)
1675 mlog_errno(status);
1676
1677 if (!igrab(inode))
1678 BUG();
1679
Joel Becker2b4e30f2008-09-03 20:03:41 -07001680 jbd2_journal_destroy(journal);
Mark Fashehccd979b2005-12-15 14:31:24 -08001681
Sunil Mushran619c2002011-07-24 10:34:54 -07001682 printk(KERN_NOTICE "ocfs2: End replay journal (node %d, slot %d) on "\
1683 "device (%u,%u)\n", node_num, slot_num, MAJOR(osb->sb->s_dev),
1684 MINOR(osb->sb->s_dev));
Mark Fashehccd979b2005-12-15 14:31:24 -08001685done:
1686 /* drop the lock on this nodes journal */
1687 if (got_lock)
Mark Fashehe63aecb62007-10-18 15:30:42 -07001688 ocfs2_inode_unlock(inode, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001689
1690 if (inode)
1691 iput(inode);
1692
Mark Fasheha81cb882008-10-07 14:25:16 -07001693 brelse(bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08001694
Mark Fashehccd979b2005-12-15 14:31:24 -08001695 return status;
1696}
1697
1698/*
1699 * Do the most important parts of node recovery:
1700 * - Replay it's journal
1701 * - Stamp a clean local allocator file
1702 * - Stamp a clean truncate log
1703 * - Mark the node clean
1704 *
1705 * If this function completes without error, a node in OCFS2 can be
1706 * said to have been safely recovered. As a result, failure during the
1707 * second part of a nodes recovery process (local alloc recovery) is
1708 * far less concerning.
1709 */
1710static int ocfs2_recover_node(struct ocfs2_super *osb,
Jan Kara22053632008-10-20 23:50:38 +02001711 int node_num, int slot_num)
Mark Fashehccd979b2005-12-15 14:31:24 -08001712{
1713 int status = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08001714 struct ocfs2_dinode *la_copy = NULL;
1715 struct ocfs2_dinode *tl_copy = NULL;
1716
Tao Mab4107952011-02-24 14:15:35 +08001717 trace_ocfs2_recover_node(node_num, slot_num, osb->node_num);
Mark Fashehccd979b2005-12-15 14:31:24 -08001718
1719 /* Should not ever be called to recover ourselves -- in that
1720 * case we should've called ocfs2_journal_load instead. */
Eric Sesterhenn / snakebyteebdec832006-01-27 10:32:52 +01001721 BUG_ON(osb->node_num == node_num);
Mark Fashehccd979b2005-12-15 14:31:24 -08001722
Mark Fashehccd979b2005-12-15 14:31:24 -08001723 status = ocfs2_replay_journal(osb, node_num, slot_num);
1724 if (status < 0) {
Sunil Mushran539d8262008-07-14 17:31:10 -07001725 if (status == -EBUSY) {
Tao Mab4107952011-02-24 14:15:35 +08001726 trace_ocfs2_recover_node_skip(slot_num, node_num);
Sunil Mushran539d8262008-07-14 17:31:10 -07001727 status = 0;
1728 goto done;
1729 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001730 mlog_errno(status);
1731 goto done;
1732 }
1733
1734 /* Stamp a clean local alloc file AFTER recovering the journal... */
1735 status = ocfs2_begin_local_alloc_recovery(osb, slot_num, &la_copy);
1736 if (status < 0) {
1737 mlog_errno(status);
1738 goto done;
1739 }
1740
1741 /* An error from begin_truncate_log_recovery is not
1742 * serious enough to warrant halting the rest of
1743 * recovery. */
1744 status = ocfs2_begin_truncate_log_recovery(osb, slot_num, &tl_copy);
1745 if (status < 0)
1746 mlog_errno(status);
1747
1748 /* Likewise, this would be a strange but ultimately not so
1749 * harmful place to get an error... */
Mark Fasheh8e8a4602008-02-01 11:59:09 -08001750 status = ocfs2_clear_slot(osb, slot_num);
Mark Fashehccd979b2005-12-15 14:31:24 -08001751 if (status < 0)
1752 mlog_errno(status);
1753
1754 /* This will kfree the memory pointed to by la_copy and tl_copy */
1755 ocfs2_queue_recovery_completion(osb->journal, slot_num, la_copy,
Joseph Qied460cf2015-02-16 15:59:57 -08001756 tl_copy, NULL, ORPHAN_NEED_TRUNCATE);
Mark Fashehccd979b2005-12-15 14:31:24 -08001757
1758 status = 0;
1759done:
1760
Mark Fashehccd979b2005-12-15 14:31:24 -08001761 return status;
1762}
1763
1764/* Test node liveness by trylocking his journal. If we get the lock,
1765 * we drop it here. Return 0 if we got the lock, -EAGAIN if node is
1766 * still alive (we couldn't get the lock) and < 0 on error. */
1767static int ocfs2_trylock_journal(struct ocfs2_super *osb,
1768 int slot_num)
1769{
1770 int status, flags;
1771 struct inode *inode = NULL;
1772
1773 inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE,
1774 slot_num);
1775 if (inode == NULL) {
1776 mlog(ML_ERROR, "access error\n");
1777 status = -EACCES;
1778 goto bail;
1779 }
1780 if (is_bad_inode(inode)) {
1781 mlog(ML_ERROR, "access error (bad inode)\n");
1782 iput(inode);
1783 inode = NULL;
1784 status = -EACCES;
1785 goto bail;
1786 }
1787 SET_INODE_JOURNAL(inode);
1788
1789 flags = OCFS2_META_LOCK_RECOVERY | OCFS2_META_LOCK_NOQUEUE;
Mark Fashehe63aecb62007-10-18 15:30:42 -07001790 status = ocfs2_inode_lock_full(inode, NULL, 1, flags);
Mark Fashehccd979b2005-12-15 14:31:24 -08001791 if (status < 0) {
1792 if (status != -EAGAIN)
1793 mlog_errno(status);
1794 goto bail;
1795 }
1796
Mark Fashehe63aecb62007-10-18 15:30:42 -07001797 ocfs2_inode_unlock(inode, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001798bail:
1799 if (inode)
1800 iput(inode);
1801
1802 return status;
1803}
1804
1805/* Call this underneath ocfs2_super_lock. It also assumes that the
1806 * slot info struct has been updated from disk. */
1807int ocfs2_mark_dead_nodes(struct ocfs2_super *osb)
1808{
Joel Beckerd85b20e2008-02-01 12:01:05 -08001809 unsigned int node_num;
1810 int status, i;
Mark Fasheha1af7d12008-08-19 17:20:28 -07001811 u32 gen;
Sunil Mushran539d8262008-07-14 17:31:10 -07001812 struct buffer_head *bh = NULL;
1813 struct ocfs2_dinode *di;
Mark Fashehccd979b2005-12-15 14:31:24 -08001814
1815 /* This is called with the super block cluster lock, so we
1816 * know that the slot map can't change underneath us. */
1817
Joel Beckerd85b20e2008-02-01 12:01:05 -08001818 for (i = 0; i < osb->max_slots; i++) {
Sunil Mushran539d8262008-07-14 17:31:10 -07001819 /* Read journal inode to get the recovery generation */
1820 status = ocfs2_read_journal_inode(osb, i, &bh, NULL);
1821 if (status) {
1822 mlog_errno(status);
1823 goto bail;
1824 }
1825 di = (struct ocfs2_dinode *)bh->b_data;
Mark Fasheha1af7d12008-08-19 17:20:28 -07001826 gen = ocfs2_get_recovery_generation(di);
Sunil Mushran539d8262008-07-14 17:31:10 -07001827 brelse(bh);
1828 bh = NULL;
1829
Mark Fasheha1af7d12008-08-19 17:20:28 -07001830 spin_lock(&osb->osb_lock);
1831 osb->slot_recovery_generations[i] = gen;
1832
Tao Mab4107952011-02-24 14:15:35 +08001833 trace_ocfs2_mark_dead_nodes(i,
1834 osb->slot_recovery_generations[i]);
Sunil Mushran539d8262008-07-14 17:31:10 -07001835
Mark Fasheha1af7d12008-08-19 17:20:28 -07001836 if (i == osb->slot_num) {
1837 spin_unlock(&osb->osb_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -08001838 continue;
Mark Fasheha1af7d12008-08-19 17:20:28 -07001839 }
Joel Beckerd85b20e2008-02-01 12:01:05 -08001840
1841 status = ocfs2_slot_to_node_num_locked(osb, i, &node_num);
Mark Fasheha1af7d12008-08-19 17:20:28 -07001842 if (status == -ENOENT) {
1843 spin_unlock(&osb->osb_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -08001844 continue;
Mark Fasheha1af7d12008-08-19 17:20:28 -07001845 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001846
Mark Fasheha1af7d12008-08-19 17:20:28 -07001847 if (__ocfs2_recovery_map_test(osb, node_num)) {
1848 spin_unlock(&osb->osb_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -08001849 continue;
Mark Fasheha1af7d12008-08-19 17:20:28 -07001850 }
Joel Beckerd85b20e2008-02-01 12:01:05 -08001851 spin_unlock(&osb->osb_lock);
Mark Fashehccd979b2005-12-15 14:31:24 -08001852
1853 /* Ok, we have a slot occupied by another node which
1854 * is not in the recovery map. We trylock his journal
1855 * file here to test if he's alive. */
1856 status = ocfs2_trylock_journal(osb, i);
1857 if (!status) {
1858 /* Since we're called from mount, we know that
1859 * the recovery thread can't race us on
1860 * setting / checking the recovery bits. */
1861 ocfs2_recovery_thread(osb, node_num);
1862 } else if ((status < 0) && (status != -EAGAIN)) {
1863 mlog_errno(status);
1864 goto bail;
1865 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001866 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001867
1868 status = 0;
1869bail:
Mark Fashehccd979b2005-12-15 14:31:24 -08001870 return status;
1871}
1872
Srinivas Eeda83273932009-06-03 17:02:55 -07001873/*
1874 * Scan timer should get fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT. Add some
1875 * randomness to the timeout to minimize multple nodes firing the timer at the
1876 * same time.
1877 */
1878static inline unsigned long ocfs2_orphan_scan_timeout(void)
1879{
1880 unsigned long time;
1881
1882 get_random_bytes(&time, sizeof(time));
1883 time = ORPHAN_SCAN_SCHEDULE_TIMEOUT + (time % 5000);
1884 return msecs_to_jiffies(time);
1885}
1886
1887/*
1888 * ocfs2_queue_orphan_scan calls ocfs2_queue_recovery_completion for
1889 * every slot, queuing a recovery of the slot on the ocfs2_wq thread. This
1890 * is done to catch any orphans that are left over in orphan directories.
1891 *
Sunil Mushrana035bff2011-07-24 10:35:54 -07001892 * It scans all slots, even ones that are in use. It does so to handle the
1893 * case described below:
1894 *
1895 * Node 1 has an inode it was using. The dentry went away due to memory
1896 * pressure. Node 1 closes the inode, but it's on the free list. The node
1897 * has the open lock.
1898 * Node 2 unlinks the inode. It grabs the dentry lock to notify others,
1899 * but node 1 has no dentry and doesn't get the message. It trylocks the
1900 * open lock, sees that another node has a PR, and does nothing.
1901 * Later node 2 runs its orphan dir. It igets the inode, trylocks the
1902 * open lock, sees the PR still, and does nothing.
1903 * Basically, we have to trigger an orphan iput on node 1. The only way
1904 * for this to happen is if node 1 runs node 2's orphan dir.
1905 *
Srinivas Eeda83273932009-06-03 17:02:55 -07001906 * ocfs2_queue_orphan_scan gets called every ORPHAN_SCAN_SCHEDULE_TIMEOUT
1907 * seconds. It gets an EX lock on os_lockres and checks sequence number
1908 * stored in LVB. If the sequence number has changed, it means some other
1909 * node has done the scan. This node skips the scan and tracks the
1910 * sequence number. If the sequence number didn't change, it means a scan
1911 * hasn't happened. The node queues a scan and increments the
1912 * sequence number in the LVB.
1913 */
Joseph Qib519ea62015-06-24 16:55:34 -07001914static void ocfs2_queue_orphan_scan(struct ocfs2_super *osb)
Srinivas Eeda83273932009-06-03 17:02:55 -07001915{
1916 struct ocfs2_orphan_scan *os;
1917 int status, i;
1918 u32 seqno = 0;
1919
1920 os = &osb->osb_orphan_scan;
1921
Sunil Mushran692684e2009-06-19 16:53:17 -07001922 if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
1923 goto out;
1924
Tao Mab4107952011-02-24 14:15:35 +08001925 trace_ocfs2_queue_orphan_scan_begin(os->os_count, os->os_seqno,
1926 atomic_read(&os->os_state));
1927
Sunil Mushrandf152c22009-06-22 11:40:07 -07001928 status = ocfs2_orphan_scan_lock(osb, &seqno);
Srinivas Eeda83273932009-06-03 17:02:55 -07001929 if (status < 0) {
1930 if (status != -EAGAIN)
1931 mlog_errno(status);
1932 goto out;
1933 }
1934
Sunil Mushran692684e2009-06-19 16:53:17 -07001935 /* Do no queue the tasks if the volume is being umounted */
1936 if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
1937 goto unlock;
1938
Srinivas Eeda83273932009-06-03 17:02:55 -07001939 if (os->os_seqno != seqno) {
1940 os->os_seqno = seqno;
1941 goto unlock;
1942 }
1943
1944 for (i = 0; i < osb->max_slots; i++)
1945 ocfs2_queue_recovery_completion(osb->journal, i, NULL, NULL,
Joseph Qied460cf2015-02-16 15:59:57 -08001946 NULL, ORPHAN_NO_NEED_TRUNCATE);
Srinivas Eeda83273932009-06-03 17:02:55 -07001947 /*
1948 * We queued a recovery on orphan slots, increment the sequence
1949 * number and update LVB so other node will skip the scan for a while
1950 */
1951 seqno++;
Srinivas Eeda15633a22009-06-03 17:02:56 -07001952 os->os_count++;
1953 os->os_scantime = CURRENT_TIME;
Srinivas Eeda83273932009-06-03 17:02:55 -07001954unlock:
Sunil Mushrandf152c22009-06-22 11:40:07 -07001955 ocfs2_orphan_scan_unlock(osb, seqno);
Srinivas Eeda83273932009-06-03 17:02:55 -07001956out:
Tao Mab4107952011-02-24 14:15:35 +08001957 trace_ocfs2_queue_orphan_scan_end(os->os_count, os->os_seqno,
1958 atomic_read(&os->os_state));
Srinivas Eeda83273932009-06-03 17:02:55 -07001959 return;
1960}
1961
1962/* Worker task that gets fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT millsec */
Joseph Qib519ea62015-06-24 16:55:34 -07001963static void ocfs2_orphan_scan_work(struct work_struct *work)
Srinivas Eeda83273932009-06-03 17:02:55 -07001964{
1965 struct ocfs2_orphan_scan *os;
1966 struct ocfs2_super *osb;
1967
1968 os = container_of(work, struct ocfs2_orphan_scan,
1969 os_orphan_scan_work.work);
1970 osb = os->os_osb;
1971
1972 mutex_lock(&os->os_lock);
1973 ocfs2_queue_orphan_scan(osb);
Sunil Mushran692684e2009-06-19 16:53:17 -07001974 if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE)
Tao Ma40f165f2010-05-28 14:22:59 +08001975 queue_delayed_work(ocfs2_wq, &os->os_orphan_scan_work,
Sunil Mushran692684e2009-06-19 16:53:17 -07001976 ocfs2_orphan_scan_timeout());
Srinivas Eeda83273932009-06-03 17:02:55 -07001977 mutex_unlock(&os->os_lock);
1978}
1979
1980void ocfs2_orphan_scan_stop(struct ocfs2_super *osb)
1981{
1982 struct ocfs2_orphan_scan *os;
1983
1984 os = &osb->osb_orphan_scan;
Sunil Mushrandf152c22009-06-22 11:40:07 -07001985 if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) {
1986 atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE);
1987 mutex_lock(&os->os_lock);
1988 cancel_delayed_work(&os->os_orphan_scan_work);
1989 mutex_unlock(&os->os_lock);
1990 }
Srinivas Eeda83273932009-06-03 17:02:55 -07001991}
1992
Sunil Mushrandf152c22009-06-22 11:40:07 -07001993void ocfs2_orphan_scan_init(struct ocfs2_super *osb)
Srinivas Eeda83273932009-06-03 17:02:55 -07001994{
1995 struct ocfs2_orphan_scan *os;
1996
1997 os = &osb->osb_orphan_scan;
1998 os->os_osb = osb;
Srinivas Eeda15633a22009-06-03 17:02:56 -07001999 os->os_count = 0;
Sunil Mushran32119492009-06-19 16:53:18 -07002000 os->os_seqno = 0;
Srinivas Eeda83273932009-06-03 17:02:55 -07002001 mutex_init(&os->os_lock);
Sunil Mushrandf152c22009-06-22 11:40:07 -07002002 INIT_DELAYED_WORK(&os->os_orphan_scan_work, ocfs2_orphan_scan_work);
Jeff Mahoney8b712cd2009-07-07 17:22:12 -04002003}
Srinivas Eeda83273932009-06-03 17:02:55 -07002004
Jeff Mahoney8b712cd2009-07-07 17:22:12 -04002005void ocfs2_orphan_scan_start(struct ocfs2_super *osb)
2006{
2007 struct ocfs2_orphan_scan *os;
2008
2009 os = &osb->osb_orphan_scan;
2010 os->os_scantime = CURRENT_TIME;
Sunil Mushrandf152c22009-06-22 11:40:07 -07002011 if (ocfs2_is_hard_readonly(osb) || ocfs2_mount_local(osb))
2012 atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE);
2013 else {
2014 atomic_set(&os->os_state, ORPHAN_SCAN_ACTIVE);
Tao Ma40f165f2010-05-28 14:22:59 +08002015 queue_delayed_work(ocfs2_wq, &os->os_orphan_scan_work,
2016 ocfs2_orphan_scan_timeout());
Sunil Mushrandf152c22009-06-22 11:40:07 -07002017 }
Srinivas Eeda83273932009-06-03 17:02:55 -07002018}
2019
Mark Fasheh5eae5b92007-09-10 17:50:51 -07002020struct ocfs2_orphan_filldir_priv {
Al Viro3704412b2013-05-22 21:06:00 -04002021 struct dir_context ctx;
Mark Fasheh5eae5b92007-09-10 17:50:51 -07002022 struct inode *head;
2023 struct ocfs2_super *osb;
2024};
2025
Miklos Szerediac7576f2014-10-30 17:37:34 +01002026static int ocfs2_orphan_filldir(struct dir_context *ctx, const char *name,
2027 int name_len, loff_t pos, u64 ino,
2028 unsigned type)
Mark Fasheh5eae5b92007-09-10 17:50:51 -07002029{
Miklos Szerediac7576f2014-10-30 17:37:34 +01002030 struct ocfs2_orphan_filldir_priv *p =
2031 container_of(ctx, struct ocfs2_orphan_filldir_priv, ctx);
Mark Fasheh5eae5b92007-09-10 17:50:51 -07002032 struct inode *iter;
2033
2034 if (name_len == 1 && !strncmp(".", name, 1))
2035 return 0;
2036 if (name_len == 2 && !strncmp("..", name, 2))
2037 return 0;
2038
2039 /* Skip bad inodes so that recovery can continue */
2040 iter = ocfs2_iget(p->osb, ino,
Jan Kara5fa06132008-01-11 00:11:45 +01002041 OCFS2_FI_FLAG_ORPHAN_RECOVERY, 0);
Mark Fasheh5eae5b92007-09-10 17:50:51 -07002042 if (IS_ERR(iter))
2043 return 0;
2044
Joseph Qied460cf2015-02-16 15:59:57 -08002045 /* Skip inodes which are already added to recover list, since dio may
2046 * happen concurrently with unlink/rename */
2047 if (OCFS2_I(iter)->ip_next_orphan) {
2048 iput(iter);
2049 return 0;
2050 }
2051
Tao Mab4107952011-02-24 14:15:35 +08002052 trace_ocfs2_orphan_filldir((unsigned long long)OCFS2_I(iter)->ip_blkno);
Mark Fasheh5eae5b92007-09-10 17:50:51 -07002053 /* No locking is required for the next_orphan queue as there
2054 * is only ever a single process doing orphan recovery. */
2055 OCFS2_I(iter)->ip_next_orphan = p->head;
2056 p->head = iter;
2057
2058 return 0;
2059}
2060
Mark Fashehb4df6ed2006-02-22 17:35:08 -08002061static int ocfs2_queue_orphans(struct ocfs2_super *osb,
2062 int slot,
2063 struct inode **head)
Mark Fashehccd979b2005-12-15 14:31:24 -08002064{
Mark Fashehb4df6ed2006-02-22 17:35:08 -08002065 int status;
Mark Fashehccd979b2005-12-15 14:31:24 -08002066 struct inode *orphan_dir_inode = NULL;
Al Viro3704412b2013-05-22 21:06:00 -04002067 struct ocfs2_orphan_filldir_priv priv = {
2068 .ctx.actor = ocfs2_orphan_filldir,
2069 .osb = osb,
2070 .head = *head
2071 };
Mark Fashehccd979b2005-12-15 14:31:24 -08002072
2073 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
2074 ORPHAN_DIR_SYSTEM_INODE,
2075 slot);
2076 if (!orphan_dir_inode) {
2077 status = -ENOENT;
2078 mlog_errno(status);
Mark Fashehb4df6ed2006-02-22 17:35:08 -08002079 return status;
Sunil Mushran2bd63212010-01-25 16:57:38 -08002080 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002081
Jes Sorensen1b1dcc12006-01-09 15:59:24 -08002082 mutex_lock(&orphan_dir_inode->i_mutex);
Mark Fashehe63aecb62007-10-18 15:30:42 -07002083 status = ocfs2_inode_lock(orphan_dir_inode, NULL, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08002084 if (status < 0) {
Mark Fashehccd979b2005-12-15 14:31:24 -08002085 mlog_errno(status);
2086 goto out;
2087 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002088
Al Viro3704412b2013-05-22 21:06:00 -04002089 status = ocfs2_dir_foreach(orphan_dir_inode, &priv.ctx);
Mark Fasheh5eae5b92007-09-10 17:50:51 -07002090 if (status) {
2091 mlog_errno(status);
Mark Fasheha86370f2007-12-03 14:06:23 -08002092 goto out_cluster;
Mark Fashehccd979b2005-12-15 14:31:24 -08002093 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002094
Mark Fasheh5eae5b92007-09-10 17:50:51 -07002095 *head = priv.head;
2096
Mark Fasheha86370f2007-12-03 14:06:23 -08002097out_cluster:
Mark Fashehe63aecb62007-10-18 15:30:42 -07002098 ocfs2_inode_unlock(orphan_dir_inode, 0);
Mark Fashehb4df6ed2006-02-22 17:35:08 -08002099out:
2100 mutex_unlock(&orphan_dir_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -08002101 iput(orphan_dir_inode);
Mark Fashehb4df6ed2006-02-22 17:35:08 -08002102 return status;
2103}
2104
2105static int ocfs2_orphan_recovery_can_continue(struct ocfs2_super *osb,
2106 int slot)
2107{
2108 int ret;
2109
2110 spin_lock(&osb->osb_lock);
2111 ret = !osb->osb_orphan_wipes[slot];
2112 spin_unlock(&osb->osb_lock);
2113 return ret;
2114}
2115
2116static void ocfs2_mark_recovering_orphan_dir(struct ocfs2_super *osb,
2117 int slot)
2118{
2119 spin_lock(&osb->osb_lock);
2120 /* Mark ourselves such that new processes in delete_inode()
2121 * know to quit early. */
2122 ocfs2_node_map_set_bit(osb, &osb->osb_recovering_orphan_dirs, slot);
2123 while (osb->osb_orphan_wipes[slot]) {
2124 /* If any processes are already in the middle of an
2125 * orphan wipe on this dir, then we need to wait for
2126 * them. */
2127 spin_unlock(&osb->osb_lock);
2128 wait_event_interruptible(osb->osb_wipe_event,
2129 ocfs2_orphan_recovery_can_continue(osb, slot));
2130 spin_lock(&osb->osb_lock);
2131 }
2132 spin_unlock(&osb->osb_lock);
2133}
2134
2135static void ocfs2_clear_recovering_orphan_dir(struct ocfs2_super *osb,
2136 int slot)
2137{
2138 ocfs2_node_map_clear_bit(osb, &osb->osb_recovering_orphan_dirs, slot);
2139}
2140
2141/*
2142 * Orphan recovery. Each mounted node has it's own orphan dir which we
2143 * must run during recovery. Our strategy here is to build a list of
2144 * the inodes in the orphan dir and iget/iput them. The VFS does
2145 * (most) of the rest of the work.
2146 *
2147 * Orphan recovery can happen at any time, not just mount so we have a
2148 * couple of extra considerations.
2149 *
2150 * - We grab as many inodes as we can under the orphan dir lock -
2151 * doing iget() outside the orphan dir risks getting a reference on
2152 * an invalid inode.
2153 * - We must be sure not to deadlock with other processes on the
2154 * system wanting to run delete_inode(). This can happen when they go
2155 * to lock the orphan dir and the orphan recovery process attempts to
2156 * iget() inside the orphan dir lock. This can be avoided by
2157 * advertising our state to ocfs2_delete_inode().
2158 */
2159static int ocfs2_recover_orphans(struct ocfs2_super *osb,
Joseph Qied460cf2015-02-16 15:59:57 -08002160 int slot,
2161 enum ocfs2_orphan_reco_type orphan_reco_type)
Mark Fashehb4df6ed2006-02-22 17:35:08 -08002162{
2163 int ret = 0;
2164 struct inode *inode = NULL;
2165 struct inode *iter;
2166 struct ocfs2_inode_info *oi;
Joseph Qicf1776a2015-06-24 16:54:59 -07002167 struct buffer_head *di_bh = NULL;
2168 struct ocfs2_dinode *di = NULL;
Mark Fashehb4df6ed2006-02-22 17:35:08 -08002169
Tao Mab4107952011-02-24 14:15:35 +08002170 trace_ocfs2_recover_orphans(slot);
Mark Fashehb4df6ed2006-02-22 17:35:08 -08002171
2172 ocfs2_mark_recovering_orphan_dir(osb, slot);
2173 ret = ocfs2_queue_orphans(osb, slot, &inode);
2174 ocfs2_clear_recovering_orphan_dir(osb, slot);
2175
2176 /* Error here should be noted, but we want to continue with as
2177 * many queued inodes as we've got. */
2178 if (ret)
2179 mlog_errno(ret);
Mark Fashehccd979b2005-12-15 14:31:24 -08002180
2181 while (inode) {
2182 oi = OCFS2_I(inode);
Tao Mab4107952011-02-24 14:15:35 +08002183 trace_ocfs2_recover_orphans_iput(
2184 (unsigned long long)oi->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08002185
2186 iter = oi->ip_next_orphan;
Joseph Qied460cf2015-02-16 15:59:57 -08002187 oi->ip_next_orphan = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08002188
Joseph Qi512f62a2015-09-04 15:43:37 -07002189 mutex_lock(&inode->i_mutex);
Joseph Qicf1776a2015-06-24 16:54:59 -07002190 ret = ocfs2_rw_lock(inode, 1);
2191 if (ret < 0) {
2192 mlog_errno(ret);
2193 goto next;
2194 }
Joseph Qied460cf2015-02-16 15:59:57 -08002195 /*
2196 * We need to take and drop the inode lock to
2197 * force read inode from disk.
2198 */
Joseph Qicf1776a2015-06-24 16:54:59 -07002199 ret = ocfs2_inode_lock(inode, &di_bh, 1);
Joseph Qied460cf2015-02-16 15:59:57 -08002200 if (ret) {
2201 mlog_errno(ret);
Joseph Qicf1776a2015-06-24 16:54:59 -07002202 goto unlock_rw;
Joseph Qied460cf2015-02-16 15:59:57 -08002203 }
Joseph Qicf1776a2015-06-24 16:54:59 -07002204
2205 di = (struct ocfs2_dinode *)di_bh->b_data;
Mark Fashehccd979b2005-12-15 14:31:24 -08002206
Joseph Qied460cf2015-02-16 15:59:57 -08002207 if (inode->i_nlink == 0) {
2208 spin_lock(&oi->ip_lock);
2209 /* Set the proper information to get us going into
2210 * ocfs2_delete_inode. */
2211 oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED;
2212 spin_unlock(&oi->ip_lock);
Joseph Qiad694822015-09-04 15:44:40 -07002213 }
2214
2215 if ((orphan_reco_type == ORPHAN_NEED_TRUNCATE) &&
Joseph Qicf1776a2015-06-24 16:54:59 -07002216 (di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))) {
Joseph Qied460cf2015-02-16 15:59:57 -08002217 ret = ocfs2_truncate_file(inode, di_bh,
2218 i_size_read(inode));
Joseph Qied460cf2015-02-16 15:59:57 -08002219 if (ret < 0) {
2220 if (ret != -ENOSPC)
2221 mlog_errno(ret);
Joseph Qicf1776a2015-06-24 16:54:59 -07002222 goto unlock_inode;
Joseph Qied460cf2015-02-16 15:59:57 -08002223 }
2224
Joseph Qicf1776a2015-06-24 16:54:59 -07002225 ret = ocfs2_del_inode_from_orphan(osb, inode, di_bh, 0, 0);
Joseph Qied460cf2015-02-16 15:59:57 -08002226 if (ret)
2227 mlog_errno(ret);
2228 } /* else if ORPHAN_NO_NEED_TRUNCATE, do nothing */
Joseph Qicf1776a2015-06-24 16:54:59 -07002229unlock_inode:
2230 ocfs2_inode_unlock(inode, 1);
Joseph Qi512f62a2015-09-04 15:43:37 -07002231 brelse(di_bh);
2232 di_bh = NULL;
Joseph Qicf1776a2015-06-24 16:54:59 -07002233unlock_rw:
2234 ocfs2_rw_unlock(inode, 1);
Joseph Qied460cf2015-02-16 15:59:57 -08002235next:
Joseph Qi512f62a2015-09-04 15:43:37 -07002236 mutex_unlock(&inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -08002237 iput(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08002238 inode = iter;
2239 }
2240
Mark Fashehb4df6ed2006-02-22 17:35:08 -08002241 return ret;
Mark Fashehccd979b2005-12-15 14:31:24 -08002242}
2243
Jan Kara19ece542008-08-21 20:13:17 +02002244static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota)
Mark Fashehccd979b2005-12-15 14:31:24 -08002245{
2246 /* This check is good because ocfs2 will wait on our recovery
2247 * thread before changing it to something other than MOUNTED
2248 * or DISABLED. */
2249 wait_event(osb->osb_mount_event,
Jan Kara19ece542008-08-21 20:13:17 +02002250 (!quota && atomic_read(&osb->vol_state) == VOLUME_MOUNTED) ||
2251 atomic_read(&osb->vol_state) == VOLUME_MOUNTED_QUOTAS ||
Mark Fashehccd979b2005-12-15 14:31:24 -08002252 atomic_read(&osb->vol_state) == VOLUME_DISABLED);
2253
2254 /* If there's an error on mount, then we may never get to the
2255 * MOUNTED flag, but this is set right before
2256 * dismount_volume() so we can trust it. */
2257 if (atomic_read(&osb->vol_state) == VOLUME_DISABLED) {
Tao Mab4107952011-02-24 14:15:35 +08002258 trace_ocfs2_wait_on_mount(VOLUME_DISABLED);
Mark Fashehccd979b2005-12-15 14:31:24 -08002259 mlog(0, "mount error, exiting!\n");
2260 return -EBUSY;
2261 }
2262
2263 return 0;
2264}
2265
2266static int ocfs2_commit_thread(void *arg)
2267{
2268 int status;
2269 struct ocfs2_super *osb = arg;
2270 struct ocfs2_journal *journal = osb->journal;
2271
2272 /* we can trust j_num_trans here because _should_stop() is only set in
2273 * shutdown and nobody other than ourselves should be able to start
2274 * transactions. committing on shutdown might take a few iterations
2275 * as final transactions put deleted inodes on the list */
2276 while (!(kthread_should_stop() &&
2277 atomic_read(&journal->j_num_trans) == 0)) {
2278
Mark Fasheh745ae8ba2006-02-09 13:23:39 -08002279 wait_event_interruptible(osb->checkpoint_event,
2280 atomic_read(&journal->j_num_trans)
2281 || kthread_should_stop());
Mark Fashehccd979b2005-12-15 14:31:24 -08002282
2283 status = ocfs2_commit_cache(osb);
Joseph Qi55b465b2014-06-04 16:06:09 -07002284 if (status < 0) {
2285 static unsigned long abort_warn_time;
2286
2287 /* Warn about this once per minute */
2288 if (printk_timed_ratelimit(&abort_warn_time, 60*HZ))
2289 mlog(ML_ERROR, "status = %d, journal is "
2290 "already aborted.\n", status);
2291 /*
2292 * After ocfs2_commit_cache() fails, j_num_trans has a
2293 * non-zero value. Sleep here to avoid a busy-wait
2294 * loop.
2295 */
2296 msleep_interruptible(1000);
2297 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002298
2299 if (kthread_should_stop() && atomic_read(&journal->j_num_trans)){
2300 mlog(ML_KTHREAD,
2301 "commit_thread: %u transactions pending on "
2302 "shutdown\n",
2303 atomic_read(&journal->j_num_trans));
2304 }
2305 }
2306
2307 return 0;
2308}
2309
Sunil Mushran539d8262008-07-14 17:31:10 -07002310/* Reads all the journal inodes without taking any cluster locks. Used
2311 * for hard readonly access to determine whether any journal requires
2312 * recovery. Also used to refresh the recovery generation numbers after
2313 * a journal has been recovered by another node.
2314 */
Mark Fashehccd979b2005-12-15 14:31:24 -08002315int ocfs2_check_journals_nolocks(struct ocfs2_super *osb)
2316{
2317 int ret = 0;
2318 unsigned int slot;
Sunil Mushran539d8262008-07-14 17:31:10 -07002319 struct buffer_head *di_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08002320 struct ocfs2_dinode *di;
Sunil Mushran539d8262008-07-14 17:31:10 -07002321 int journal_dirty = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08002322
2323 for(slot = 0; slot < osb->max_slots; slot++) {
Sunil Mushran539d8262008-07-14 17:31:10 -07002324 ret = ocfs2_read_journal_inode(osb, slot, &di_bh, NULL);
2325 if (ret) {
Mark Fashehccd979b2005-12-15 14:31:24 -08002326 mlog_errno(ret);
2327 goto out;
2328 }
2329
2330 di = (struct ocfs2_dinode *) di_bh->b_data;
2331
Sunil Mushran539d8262008-07-14 17:31:10 -07002332 osb->slot_recovery_generations[slot] =
2333 ocfs2_get_recovery_generation(di);
2334
Mark Fashehccd979b2005-12-15 14:31:24 -08002335 if (le32_to_cpu(di->id1.journal1.ij_flags) &
2336 OCFS2_JOURNAL_DIRTY_FL)
Sunil Mushran539d8262008-07-14 17:31:10 -07002337 journal_dirty = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08002338
2339 brelse(di_bh);
Sunil Mushran539d8262008-07-14 17:31:10 -07002340 di_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08002341 }
2342
2343out:
Sunil Mushran539d8262008-07-14 17:31:10 -07002344 if (journal_dirty)
2345 ret = -EROFS;
Mark Fashehccd979b2005-12-15 14:31:24 -08002346 return ret;
2347}