From: NeilBrown <neilb@suse.de>
Date: Thu, 22 Dec 2011 23:17:54 +0000 (+1100)
Subject: md/raid10:  change read_balance to return an rdev
X-Git-Tag: v3.3-rc1~164^2~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=96c3fd1f3802371610c620cff03f9d825707e80e;p=pandora-kernel.git

md/raid10:  change read_balance to return an rdev

It makes more sense to return an rdev than just an index as
read_balance() gets a reference to the rdev and so returning
the pointer make this more idiomatic.

This will be needed in a future patch when we might return
a 'replacement' rdev instead of the main rdev.

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