From: Thomas Hellstrom <thellstrom@vmware.com>
Date: Wed, 6 Nov 2013 17:32:59 +0000 (-0800)
Subject: drm/ttm: Fix vma page_prot bit manipulation
X-Git-Tag: v3.13-rc1~76^2~3^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3943875e7b73fdd94dd9e911d69f0cee9ab66a89;p=pandora-kernel.git

drm/ttm: Fix vma page_prot bit manipulation

Fix a long-standing TTM issue where we manipulated the vma page_prot
bits while mmap_sem was taken in read mode only. We now make a local
copy of the vma structure which we pass when we set the ptes.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
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