From abbf098e6e1e23d5d247b9eaaf325e67f67b0328 Mon Sep 17 00:00:00 2001
From: NeilBrown <neilb@suse.de>
Date: Fri, 23 Dec 2011 10:17:54 +1100
Subject: [PATCH] md/raid10: preferentially read from replacement device if
 possible.

When reading (for array reads, not for recovery etc) we read from the
replacement device if it has recovered far enough.
This requires storing the chosen rdev in the 'r10_bio' so we can make
sure to drop the ref on the right device when the read finishes.

Signed-off-by: NeilBrown <neilb@suse.de>
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Reading git-format-patch failed