From 61cecca865280bef4f8a9748d0a9afa5df351ac2 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Roger=20Pau=20Monn=C3=A9?= <roger.pau@citrix.com>
Date: Mon, 15 Sep 2014 11:55:27 +0200
Subject: [PATCH] xen-blkback: fix leak on grant map error path
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Fix leaking a page when a grant mapping has failed.

CC: stable@vger.kernel.org
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reported-and-Tested-by: Tao Chen <boby.chen@huawei.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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Reading git-format-patch failed