From b38a872596dad80bd77d98f5fdbc58cc8f438dbb Mon Sep 17 00:00:00 2001
From: Xishi Qiu <qiuxishi@huawei.com>
Date: Tue, 12 Nov 2013 15:07:20 -0800
Subject: [PATCH] mm: use populated_zone() instead of if(zone->present_pages)

Use "if (zone->present_pages)" instead of "if (zone->present_pages)".
Simplify the code, no functional change.

Signed-off-by: Xishi Qiu <qiuxishi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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