From: Steve Capper <steve.capper@linaro.org>
Date: Tue, 7 May 2013 13:46:03 +0000 (+0100)
Subject: mm: thp: Correct the HPAGE_PMD_ORDER check.
X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~40^2^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dfa5e237e935bc6712c9ac2f52a5469a0df85bcf;p=pandora-kernel.git

mm: thp: Correct the HPAGE_PMD_ORDER check.

All Transparent Huge Pages are allocated by the buddy allocator.

A compile time check is in place that fails when the order of a
transparent huge page is too large to be allocated by the buddy
allocator. Unfortunately that compile time check passes when:
HPAGE_PMD_ORDER == MAX_ORDER
( which is incorrect as the buddy allocator can only allocate
memory of order strictly less than MAX_ORDER. )

This patch updates the compile time check to fail in the above
case.

Signed-off-by: Steve Capper <steve.capper@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
---

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