From d571e2bcf7b4f0cf8da41fed61d95c4c1b247d40 Mon Sep 17 00:00:00 2001
From: Dan Williams <dan.j.williams@intel.com>
Date: Tue, 16 Jun 2009 16:00:33 -0700
Subject: [PATCH] md/raid5: add missing call to schedule() after
 prepare_to_wait()

commit 7a3ab908948b6296ee7e81d42f7c176361c51975 upstream.

In the unlikely event that reshape progresses past the current request
while it is waiting for a stripe we need to schedule() before retrying
for 2 reasons:
1/ Prevent list corruption from duplicated list_add() calls without
   intervening list_del().
2/ Give the reshape code a chance to make some progress to resolve the
   conflict.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
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