From dba3838d7af38b15bcc8ff3437362d449408b547 Mon Sep 17 00:00:00 2001
From: Joerg Roedel <jroedel@suse.de>
Date: Wed, 9 Jul 2014 17:56:43 +0200
Subject: [PATCH] iommu/amd: Don't hold a reference to task_struct

Since we are only caring about the lifetime of the mm_struct
and not the task we can't safely keep a reference to it. The
reference is also not needed anymore, so remove that code
entirely.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Tested-by: Oded Gabbay <Oded.Gabbay@amd.com>
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