md/raid5. Don't write to known bad block on doubtful devices.

If a device has seen write errors, don't write to any known
bad blocks on that device.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2011-07-28 11:39:22 +10:00
commit 73e92e51b7