From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Mon, 17 Oct 2011 18:27:48 +0000 (-0400)
Subject: xen/blkback: Fix two races in the handling of barrier requests.
X-Git-Tag: v3.2-rc1~48^2~3^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6927d92091df2848fc0e6a693a017d4b2df549c2;p=pandora-kernel.git

xen/blkback: Fix two races in the handling of barrier requests.

There are two windows of opportunity to cause a race when
processing a barrier request. This patch fixes this.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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