From ecb178bb2b154a40cfae9fa4c42e62ccfa81ac6b Mon Sep 17 00:00:00 2001
From: majianpeng <majianpeng@gmail.com>
Date: Mon, 19 Mar 2012 12:46:42 +1100
Subject: [PATCH] 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>
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Reading git-format-patch failed