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Commit c175a0ce authored by Mel Gorman's avatar Mel Gorman Committed by Linus Torvalds
Browse files

mm: move definition for LRU isolation modes to a header 



Currently, vmscan.c defines the isolation modes for __isolate_lru_page().
Memory compaction needs access to these modes for isolating pages for
migration.  This patch exports them.

Signed-off-by: default avatarMel Gorman <mel@csn.ul.ie>
Acked-by: default avatarChristoph Lameter <cl@linux-foundation.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent f1a5ab12

include/linux/swap.h

+5 −0
Original line number Diff line number Diff line
@@ -229,6 +229,11 @@ static inline void lru_cache_add_file(struct page *page) 
	__lru_cache_add(page, LRU_INACTIVE_FILE);

}



/* LRU Isolation modes. */

#define ISOLATE_INACTIVE 0	/* Isolate inactive pages. */

#define ISOLATE_ACTIVE 1	/* Isolate active pages. */

#define ISOLATE_BOTH 2		/* Isolate both active and inactive pages. */



/* linux/mm/vmscan.c */

extern unsigned long try_to_free_pages(struct zonelist *zonelist, int order,

					gfp_t gfp_mask, nodemask_t *mask);

mm/vmscan.c

+0 −5
Original line number Diff line number Diff line
@@ -839,11 +839,6 @@ static unsigned long shrink_page_list(struct list_head *page_list, 
	return nr_reclaimed;

}



/* LRU Isolation modes. */

#define ISOLATE_INACTIVE 0	/* Isolate inactive pages. */

#define ISOLATE_ACTIVE 1	/* Isolate active pages. */

#define ISOLATE_BOTH 2		/* Isolate both active and inactive pages. */



/*

 * Attempt to remove the specified page from its LRU.  Only take this page

 * if it is of the appropriate PageActive status.  Pages which are being