From ee6f509c3274014d1f52e7a7a10aee9f85393c5e Mon Sep 17 00:00:00 2001 From: Minchan Kim Date: Tue, 31 Jul 2012 16:43:50 -0700 Subject: mm: factor out memory isolate functions mm/page_alloc.c has some memory isolation functions but they are used only when we enable CONFIG_{CMA|MEMORY_HOTPLUG|MEMORY_FAILURE}. So let's make it configurable by new CONFIG_MEMORY_ISOLATION so that it can reduce binary size and we can check it simple by CONFIG_MEMORY_ISOLATION, not if defined CONFIG_{CMA|MEMORY_HOTPLUG|MEMORY_FAILURE}. Signed-off-by: Minchan Kim Cc: Andi Kleen Cc: Marek Szyprowski Acked-by: KAMEZAWA Hiroyuki Cc: KOSAKI Motohiro Cc: Mel Gorman Cc: Michal Hocko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/page-isolation.h | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) (limited to 'include/linux/page-isolation.h') diff --git a/include/linux/page-isolation.h b/include/linux/page-isolation.h index 3bdcab30ca41..105077aa7685 100644 --- a/include/linux/page-isolation.h +++ b/include/linux/page-isolation.h @@ -1,6 +1,11 @@ #ifndef __LINUX_PAGEISOLATION_H #define __LINUX_PAGEISOLATION_H + +bool has_unmovable_pages(struct zone *zone, struct page *page, int count); +void set_pageblock_migratetype(struct page *page, int migratetype); +int move_freepages_block(struct zone *zone, struct page *page, + int migratetype); /* * Changes migrate type in [start_pfn, end_pfn) to be MIGRATE_ISOLATE. * If specified range includes migrate types other than MOVABLE or CMA, @@ -10,7 +15,7 @@ * free all pages in the range. test_page_isolated() can be used for * test it. */ -extern int +int start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, unsigned migratetype); @@ -18,7 +23,7 @@ start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, * Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE. * target range is [start_pfn, end_pfn) */ -extern int +int undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, unsigned migratetype); @@ -30,8 +35,8 @@ int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn); /* * Internal functions. Changes pageblock's migrate type. */ -extern int set_migratetype_isolate(struct page *page); -extern void unset_migratetype_isolate(struct page *page, unsigned migratetype); +int set_migratetype_isolate(struct page *page); +void unset_migratetype_isolate(struct page *page, unsigned migratetype); #endif -- cgit v1.2.3-59-g8ed1b