From 304daa8132a95e998b6716d4b7bd8bd76aa152b2 Mon Sep 17 00:00:00 2001
From: Matt Mackall <mpm@selenic.com>
Date: Mon, 4 Feb 2008 22:29:06 -0800
Subject: [PATCH] maps4: add /proc/kpageflags interface

This makes a subset of physical page flags available to userspace. Together
with /proc/pid/kpagemap, this allows tracking of a wide variety of VM behaviors.

Exported flags are decoupled from the kernel's internal flags. This
allows us to reorder flag bits, and synthesize any bits that get
redefined in terms of other bits.

[akpm@linux-foundation.org: remove unneeded access_ok()]
[akpm@linux-foundation.org: s/0/NULL/]
Signed-off-by: Matt Mackall <mpm@selenic.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
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