From: Mel Gorman <mel@skynet.ie>
Date: Sat, 28 Oct 2006 17:38:59 +0000 (-0700)
Subject: [PATCH] Calculation fix for memory holes beyong the end of physical memory
X-Git-Tag: v2.6.19-rc4~32
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0c6cb974636dd29681b03f8eb0ae227decab01fb;p=pandora-kernel.git

[PATCH] Calculation fix for memory holes beyong the end of physical memory

absent_pages_in_range() made the assumption that users of the
arch-independent zone-sizing API would not care about holes beyound the end
of physical memory.  This was not the case and was "fixed" in a patch
called "Account for holes that are outside the range of physical memory".
However, when given a range that started before a hole in "real" memory and
ended beyond the end of memory, it would get the result wrong.  The bug is
in mainline but a patch is below.

It has been tested successfully on a number of machines and architectures.
Additional credit to Keith Mannthey for discovering the problem, helping
identify the correct fix and confirming it Worked For Him.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Cc: keith mannthey <kmannth@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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