From: Libin <huawei.libin@huawei.com>
Date: Mon, 15 Apr 2013 12:48:57 +0000 (+0800)
Subject: drm: use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~55^2~49
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=025df7755472dc5ee9ebc5aa7023eba4b4ef3e3b;p=pandora-kernel.git

drm: use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT

(*->vm_end - *->vm_start) >> PAGE_SHIFT operation is implemented
as a inline funcion vma_pages() in linux/mm.h, so using it.

Signed-off-by: Libin <huawei.libin@huawei.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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