[PATCH 05/11] mm: thp: Correct the HPAGE_PMD_ORDER check.

[Catalin Marinas]

On Thu, May 23, 2013 at 06:07:52PM +0100, Steve Capper wrote:
> 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 at linaro.org>

Acked-by: Catalin Marinas <catalin.marinas at arm.com>