commit c56d5c7dfeb5cc754e17fa3d423086a3c551c219
author Konstantin Khlebnikov <khlebnikov@openvz.org> Tue May 29 15:07:00 2012 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> Tue May 29 16:22:26 2012 -0700
tree 4c89ad9692dbd3a2e0eaf96de0162a5d3066925e
parent 074291fea8bcedeabf295360e2ddd9bbb5830b4a

mm/vmscan: push lruvec pointer into inactive_list_is_low()

Switch mem_cgroup_inactive_anon_is_low() to lruvec pointers,
mem_cgroup_get_lruvec_size() is more effective than
mem_cgroup_zone_nr_lru_pages()

Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

mm/memcontrol.c

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index a68db29..9d17646 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1208,19 +1208,15 @@
 	return ret;
 }
 
-int mem_cgroup_inactive_anon_is_low(struct mem_cgroup *memcg, struct zone *zone)
+int mem_cgroup_inactive_anon_is_low(struct lruvec *lruvec)
 {
 	unsigned long inactive_ratio;
-	int nid = zone_to_nid(zone);
-	int zid = zone_idx(zone);
 	unsigned long inactive;
 	unsigned long active;
 	unsigned long gb;
 
-	inactive = mem_cgroup_zone_nr_lru_pages(memcg, nid, zid,
-						BIT(LRU_INACTIVE_ANON));
-	active = mem_cgroup_zone_nr_lru_pages(memcg, nid, zid,
-					      BIT(LRU_ACTIVE_ANON));
+	inactive = mem_cgroup_get_lruvec_size(lruvec, LRU_INACTIVE_ANON);
+	active = mem_cgroup_get_lruvec_size(lruvec, LRU_ACTIVE_ANON);
 
 	gb = (inactive + active) >> (30 - PAGE_SHIFT);
 	if (gb)
@@ -1231,17 +1227,13 @@
 	return inactive * inactive_ratio < active;
 }
 
-int mem_cgroup_inactive_file_is_low(struct mem_cgroup *memcg, struct zone *zone)
+int mem_cgroup_inactive_file_is_low(struct lruvec *lruvec)
 {
 	unsigned long active;
 	unsigned long inactive;
-	int zid = zone_idx(zone);
-	int nid = zone_to_nid(zone);
 
-	inactive = mem_cgroup_zone_nr_lru_pages(memcg, nid, zid,
-						BIT(LRU_INACTIVE_FILE));
-	active = mem_cgroup_zone_nr_lru_pages(memcg, nid, zid,
-					      BIT(LRU_ACTIVE_FILE));
+	inactive = mem_cgroup_get_lruvec_size(lruvec, LRU_INACTIVE_FILE);
+	active = mem_cgroup_get_lruvec_size(lruvec, LRU_ACTIVE_FILE);
 
 	return (active > inactive);
 }