md: Add judgement bb->unacked_exist in function md_ack_all_badblocks().

If there are no unacked bad blocks, then there is no point searching
for them to acknowledge them.


Signed-off-by: majianpeng <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
majianpeng 2012-03-19 12:46:42 +11:00 committed by NeilBrown
parent d0962936bf
commit ecb178bb2b

View File

@ -8021,7 +8021,7 @@ void md_ack_all_badblocks(struct badblocks *bb)
return;
write_seqlock_irq(&bb->lock);
if (bb->changed == 0) {
if (bb->changed == 0 && bb->unacked_exist) {
u64 *p = bb->page;
int i;
for (i = 0; i < bb->count ; i++) {