From b8a3ad5b53918787f4708ad9dfe90d2557cc78dd Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@g5.osdl.org>
Date: Fri, 13 Oct 2006 08:42:10 -0700
Subject: [PATCH] Include proper header file for PFN_DOWN()

The recent commit (99a10a60ba9bedcf5d70ef81414d3e03816afa3f) to fix up
mmap_kmem() broke compiles because it used PFN_DOWN() without including
<linux/pfn.h>.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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