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authorJohannes Weiner <jweiner@redhat.com>2012-01-12 17:18:10 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-12 20:13:05 -0800
commit6290df545814990ca2663baf6e894669132d5f73 (patch)
treec62472270ba81a7146bed0854be74e2e2338c629 /include/linux/mmzone.h
parentb95a2f2d486d0d768a92879c023a03757b9c7e58 (diff)
mm: collect LRU list heads into struct lruvec
Having a unified structure with a LRU list set for both global zones and per-memcg zones allows to keep that code simple which deals with LRU lists and does not care about the container itself. Once the per-memcg LRU lists directly link struct pages, the isolation function and all other list manipulations are shared between the memcg case and the global LRU case. Signed-off-by: Johannes Weiner <jweiner@redhat.com> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Reviewed-by: Michal Hocko <mhocko@suse.cz> Reviewed-by: Kirill A. Shutemov <kirill@shutemov.name> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Balbir Singh <bsingharora@gmail.com> Cc: Ying Han <yinghan@google.com> Cc: Greg Thelen <gthelen@google.com> Cc: Michel Lespinasse <walken@google.com> Cc: Rik van Riel <riel@redhat.com> Cc: Minchan Kim <minchan.kim@gmail.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/mmzone.h')
-rw-r--r--include/linux/mmzone.h10
1 files changed, 6 insertions, 4 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index ca6ca92418a6..42e544cd4c9f 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -159,6 +159,10 @@ static inline int is_unevictable_lru(enum lru_list l)
return (l == LRU_UNEVICTABLE);
}
+struct lruvec {
+ struct list_head lists[NR_LRU_LISTS];
+};
+
/* Mask used at gathering information at once (see memcontrol.c) */
#define LRU_ALL_FILE (BIT(LRU_INACTIVE_FILE) | BIT(LRU_ACTIVE_FILE))
#define LRU_ALL_ANON (BIT(LRU_INACTIVE_ANON) | BIT(LRU_ACTIVE_ANON))
@@ -364,10 +368,8 @@ struct zone {
ZONE_PADDING(_pad1_)
/* Fields commonly accessed by the page reclaim scanner */
- spinlock_t lru_lock;
- struct zone_lru {
- struct list_head list;
- } lru[NR_LRU_LISTS];
+ spinlock_t lru_lock;
+ struct lruvec lruvec;
struct zone_reclaim_stat reclaim_stat;