From b44166cd46e28dd608d5baa5873047a40f32919c Mon Sep 17 00:00:00 2001
From: Bob Liu <bob.liu@oracle.com>
Date: Fri, 3 Apr 2015 14:42:59 +0800
Subject: [PATCH] xen/grant: introduce func gnttab_unmap_refs_sync()
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There are several place using gnttab async unmap and wait for
completion, so move the common code to a function
gnttab_unmap_refs_sync().

Signed-off-by: Bob Liu <bob.liu@oracle.com>
Acked-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
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