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

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
...@@ -229,6 +229,11 @@ static inline void lru_cache_add_file(struct page *page) ...@@ -229,6 +229,11 @@ static inline void lru_cache_add_file(struct page *page)
__lru_cache_add(page, LRU_INACTIVE_FILE); __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 */ /* linux/mm/vmscan.c */
extern unsigned long try_to_free_pages(struct zonelist *zonelist, int order, extern unsigned long try_to_free_pages(struct zonelist *zonelist, int order,
gfp_t gfp_mask, nodemask_t *mask); gfp_t gfp_mask, nodemask_t *mask);
......
...@@ -839,11 +839,6 @@ static unsigned long shrink_page_list(struct list_head *page_list, ...@@ -839,11 +839,6 @@ static unsigned long shrink_page_list(struct list_head *page_list,
return nr_reclaimed; 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 * 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 * if it is of the appropriate PageActive status. Pages which are being
......
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