From: NeilBrown <neilb@suse.de>
Date: Sun, 1 Apr 2012 13:48:38 +0000 (+1000)
Subject: md/raid5: fix handling of bad blocks during recovery.
X-Git-Tag: v3.4-rc2~27^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=18b9837ea0dc3cf844c6c4196871ce91d047bddb;p=pandora-kernel.git

md/raid5: fix handling of bad blocks during recovery.

1/ We can only treat a known-bad-block like a read-error if we
   have the data that belongs in that block.  So fix that test.

2/ If we cannot recovery a stripe due to insufficient data,
   don't tell "md_done_sync" that the sync failed unless we really
   did fail something.  If we successfully record bad blocks,
   that is success.

Reported-by: "majianpeng" <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
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