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| author | Song Liu <songliubraving@fb.com> | 2016-12-14 15:38:02 -0800 |
|---|---|---|
| committer | Shaohua Li <shli@fb.com> | 2017-01-05 11:44:38 -0800 |
| commit | d2250f105f18a43fdab17421bd80b0ffc9fcc53f (patch) | |
| tree | 78237de8dc0bbec061524097bbf36a741a498f83 /drivers/md/raid5-cache.c | |
| parent | 3c66abbaaf69671dfd3eb9fa7740b5d7ec688231 (diff) | |
| download | linux-stable-d2250f105f18a43fdab17421bd80b0ffc9fcc53f.tar.gz linux-stable-d2250f105f18a43fdab17421bd80b0ffc9fcc53f.tar.bz2 linux-stable-d2250f105f18a43fdab17421bd80b0ffc9fcc53f.zip | |
md/r5cache: assign conf->log before r5l_load_log()
r5l_load_log() calls functions that requires a proper conf->log,
for example, r5c_is_writeback(). Therefore, we should set
conf->log before calling r5l_load_log(). If r5l_load_log() fails,
conf->log is set back to NULL.
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Diffstat (limited to 'drivers/md/raid5-cache.c')
| -rw-r--r-- | drivers/md/raid5-cache.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c index b178a8fef266..bff1b4a949e8 100644 --- a/drivers/md/raid5-cache.c +++ b/drivers/md/raid5-cache.c @@ -2633,14 +2633,16 @@ int r5l_init_log(struct r5conf *conf, struct md_rdev *rdev) spin_lock_init(&log->stripe_in_journal_lock); atomic_set(&log->stripe_in_journal_count, 0); + rcu_assign_pointer(conf->log, log); + if (r5l_load_log(log)) goto error; - rcu_assign_pointer(conf->log, log); set_bit(MD_HAS_JOURNAL, &conf->mddev->flags); return 0; error: + rcu_assign_pointer(conf->log, NULL); md_unregister_thread(&log->reclaim_thread); reclaim_thread: mempool_destroy(log->meta_pool); |