From 43506fad21ca3d8dc59e768ff458f7c5e5c01086 Mon Sep 17 00:00:00 2001
From: KyongHo Cho <pullip.cho@samsung.com>
Date: Thu, 13 Jan 2011 15:47:24 -0800
Subject: [PATCH] mm/page_alloc.c: simplify calculation of combined index of
 adjacent buddy lists

The previous approach of calucation of combined index was

	page_idx & ~(1 << order))

but we have same result with

	page_idx & buddy_idx

This reduces instructions slightly as well as enhances readability.

[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: fix used-unintialised warning]
Signed-off-by: KyongHo Cho <pullip.cho@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
Reading git-format-patch failed