From 19c07d5e0414261bd7ec3d8419dd26f468ef69d9 Mon Sep 17 00:00:00 2001
From: Sheng Yong <shengyong1@huawei.com>
Date: Tue, 14 Apr 2015 15:44:54 -0700
Subject: [PATCH] memory hotplug: use macro to switch between section and pfn

Use macro section_nr_to_pfn() to switch between section and pfn, instead
of open-coding it.  No semantic changes.

Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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