From: Dan Williams <dan.j.williams@intel.com>
Date: Tue, 16 Jun 2009 23:00:33 +0000 (-0700)
Subject: md/raid5: add missing call to schedule() after prepare_to_wait()
X-Git-Tag: v2.6.31-rc1~143^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7a3ab908948b6296ee7e81d42f7c176361c51975;p=pandora-kernel.git

md/raid5: add missing call to schedule() after prepare_to_wait()

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.

Cc: <stable@kernel.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
---

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