From e1dfa0a29737142c32f00a3bac0f609dc85b4a82 Mon Sep 17 00:00:00 2001
From: NeilBrown <neilb@suse.de>
Date: Mon, 18 Apr 2011 18:25:41 +1000
Subject: [PATCH] md: use new plugging interface for RAID IO.

md/raid submits a lot of IO from the various raid threads.
So adding start/finish plug calls to those so that some
plugging happens.

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