md/raid10: handle recovery of replacement devices.
authorNeilBrown <neilb@suse.de>
Thu, 22 Dec 2011 23:17:55 +0000 (10:17 +1100)
committerNeilBrown <neilb@suse.de>
Thu, 22 Dec 2011 23:17:55 +0000 (10:17 +1100)
If there is a replacement device, then recover to it,
reading from any drives - maybe the one being replaced, maybe not.

Signed-off-by: NeilBrown <neilb@suse.de>

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