From bc0c081b0e7a4afc4d2c7bc0666f5cd169e96814 Mon Sep 17 00:00:00 2001
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Fri, 25 Feb 2011 10:02:39 -0500
Subject: [PATCH] xen/blkback: Update to use blkdev_get_by_dev instead of
 open_by_devnum.

The API for opening a block device has changed since 2.6.32. The
correct function to open a device is blkdev_get_by_dev.
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