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md/r5cache: do r5c_update_log_state after log recovery 

We should update log state after we did a log recovery, current completion
may get wrong log state since log->log_start wasn't initalized until we
called r5l_recovery_log.

At log recovery stage, no lock needed as there is no race conditon.
next_checkpoint field will be initialized in r5l_recovery_log too.

Signed-off-by: Zhengyuan Liu <liuzhengyuan@kylinos.cn>
Signed-off-by: Shaohua Li <shli@fb.com>
This commit is contained in:
Zhengyuan Liu 2016-12-04 16:49:44 +08:00 committed by Shaohua Li
parent 43b9674832
commit 3d7e7e1d9d
1 changed files with 3 additions and 5 deletions
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8
drivers/md/raid5-cache.c
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@ -2542,14 +2542,12 @@ create:
if (log->max_free_space > RECLAIM_MAX_FREE_SPACE)
log->max_free_space = RECLAIM_MAX_FREE_SPACE;
log->last_checkpoint = cp;
log->next_checkpoint = cp;
mutex_lock(&log->io_mutex);
r5c_update_log_state(log);
mutex_unlock(&log->io_mutex);
__free_page(page);
return r5l_recovery_log(log);
ret = r5l_recovery_log(log);
r5c_update_log_state(log);
return ret;
ioerr:
__free_page(page);
return ret;