From 6219049ae1ce32b89236646cccaec2a5fc6c4fd2 Mon Sep 17 00:00:00 2001
From: Bob Liu
Date: Tue, 11 Dec 2012 16:00:37 -0800
Subject: mm: introduce mm_find_pmd()

Several place need to find the pmd by(mm_struct, address), so introduce a
function to simplify it.

[akpm@linux-foundation.org: fix warning]
Signed-off-by: Bob Liu <lliubbo@gmail.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Ni zhan Chen <nizhan.chen@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 mm/internal.h | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'mm/internal.h')

diff --git a/mm/internal.h b/mm/internal.h
index a4fa284f6bc2..52d1fa957194 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -91,6 +91,11 @@ extern unsigned long highest_memmap_pfn;
 extern int isolate_lru_page(struct page *page);
 extern void putback_lru_page(struct page *page);
 
+/*
+ * in mm/rmap.c:
+ */
+extern pmd_t *mm_find_pmd(struct mm_struct *mm, unsigned long address);
+
 /*
  * in mm/page_alloc.c
  */
-- 
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