linux-kernel - [PATCH] mm, page_isolation: make set/unset_migratetype

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Date:	Thu, 23 Jul 2015 05:40:04 +0000
From:	Naoya Horiguchi <n-horiguchi@...jp.nec.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	David Rientjes <rientjes@...gle.com>,
	Vlastimil Babka <vbabka@...e.cz>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Minchan Kim <minchan@...nel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] mm, page_isolation: make set/unset_migratetype_isolate()
 file-local

Nowaday, set/unset_migratetype_isolate() is defined and used only in
mm/page_isolation, so let's limit the scope within the file.

Signed-off-by: Naoya Horiguchi <n-horiguchi@...jp.nec.com>
---
 include/linux/page-isolation.h | 5 -----
 mm/page_isolation.c            | 5 +++--
 2 files changed, 3 insertions(+), 7 deletions(-)

diff --git v4.2-rc2.orig/include/linux/page-isolation.h v4.2-rc2/include/linux/page-isolation.h
index 2dc1e1697b45..047d64706f2a 100644
--- v4.2-rc2.orig/include/linux/page-isolation.h
+++ v4.2-rc2/include/linux/page-isolation.h
@@ -65,11 +65,6 @@ undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
 int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn,
 			bool skip_hwpoisoned_pages);
 
-/*
- * Internal functions. Changes pageblock's migrate type.
- */
-int set_migratetype_isolate(struct page *page, bool skip_hwpoisoned_pages);
-void unset_migratetype_isolate(struct page *page, unsigned migratetype);
 struct page *alloc_migrate_target(struct page *page, unsigned long private,
 				int **resultp);
 
diff --git v4.2-rc2.orig/mm/page_isolation.c v4.2-rc2/mm/page_isolation.c
index 32fdc1df05e5..4568fd58f70a 100644
--- v4.2-rc2.orig/mm/page_isolation.c
+++ v4.2-rc2/mm/page_isolation.c
@@ -9,7 +9,8 @@
 #include <linux/hugetlb.h>
 #include "internal.h"
 
-int set_migratetype_isolate(struct page *page, bool skip_hwpoisoned_pages)
+static int set_migratetype_isolate(struct page *page,
+				bool skip_hwpoisoned_pages)
 {
 	struct zone *zone;
 	unsigned long flags, pfn;
@@ -72,7 +73,7 @@ int set_migratetype_isolate(struct page *page, bool skip_hwpoisoned_pages)
 	return ret;
 }
 
-void unset_migratetype_isolate(struct page *page, unsigned migratetype)
+static void unset_migratetype_isolate(struct page *page, unsigned migratetype)
 {
 	struct zone *zone;
 	unsigned long flags, nr_pages;
-- 
2.4.3
--
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