md/raid5-cache: no recovery is required when create super-block

When create the super-block information, We do not need to do this
recovery stage, only need to initialize some variables.

Signed-off-by: JackieLiu <liuyun01@kylinos.cn>
Reviewed-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Shaohua Li <shli@fb.com>

diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c
index c3b3124e033b9ea81881c243292ba21d55734726..7c732c5f87c91171403cdf90d1c5255e5a0f1739 100644 (file)
--- a/drivers/md/raid5-cache.c
+++ b/drivers/md/raid5-cache.c
@@ -2492,7 +2492,7 @@ static int r5l_load_log(struct r5l_log *log)
        sector_t cp = log->rdev->journal_tail;
        u32 stored_crc, expected_crc;
        bool create_super = false;
-       int ret;
+       int ret = 0;
 
        /* Make sure it's valid */
        if (cp >= rdev->sectors || round_down(cp, BLOCK_SECTORS) != cp)
@@ -2545,7 +2545,13 @@ create:
 
        __free_page(page);
 
-       ret = r5l_recovery_log(log);
+       if (create_super) {
+               log->log_start = r5l_ring_add(log, cp, BLOCK_SECTORS);
+               log->seq = log->last_cp_seq + 1;
+               log->next_checkpoint = cp;
+       } else
+               ret = r5l_recovery_log(log);
+
        r5c_update_log_state(log);
        return ret;
 ioerr: