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raid5-cache: correct condition for empty metadata write

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As long as we recover one metadata block, we should write the empty metadata
write. The original code could make recovery corrupted if only one meta is
valid.

Reported-by: Zhengyuan Liu <liuzhengyuan@kylinos.cn>
Signed-off-by: Shaohua Li <shli@fb.com>
This commit is contained in:
Shaohua Li 2016-10-27 15:22:13 -07:00
parent 16f889499a
commit 9a8b27fac5
1 changed files with 1 additions and 1 deletions
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2
drivers/md/raid5-cache.c
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@ -1087,7 +1087,7 @@ static int r5l_recovery_log(struct r5l_log *log)
* 1's seq + 10 and let superblock points to meta2. The same recovery will
* not think meta 3 is a valid meta, because its seq doesn't match
*/
if (ctx.seq > log->last_cp_seq + 1) {
if (ctx.seq > log->last_cp_seq) {
int ret;
ret = r5l_log_write_empty_meta_block(log, ctx.pos, ctx.seq + 10);