From: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Date: Thu, 27 Oct 2011 21:58:48 +0000 (-0400)
Subject: xen/gntalloc: Change gref_lock to a mutex
X-Git-Tag: v3.3-rc1~129^2~34
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8ca19a8937ad91703cfefccf13bd8017b39510cd;p=pandora-kernel.git

xen/gntalloc: Change gref_lock to a mutex

The event channel release function cannot be called under a spinlock
because it can attempt to acquire a mutex due to the event channel
reference acquired when setting up unmap notifications.

Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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