From d2ab70aaae74456ed608740915dc82ef52291f69 Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Thu, 23 Jan 2014 15:53:30 -0800 Subject: [PATCH] mm/memcg: fix last_dead_count memory wastage Shorten mem_cgroup_reclaim_iter.last_dead_count from unsigned long to int: it's assigned from an int and compared with an int, and adjacent to an unsigned int: so there's no point to it being unsigned long, which wasted 104 bytes in every mem_cgroup_per_zone. Signed-off-by: Hugh Dickins Acked-by: Michal Hocko Cc: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memcontrol.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index c8715056e1ef..aa66cc4c9e79 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -149,7 +149,7 @@ struct mem_cgroup_reclaim_iter { * matches memcg->dead_count of the hierarchy root group. */ struct mem_cgroup *last_visited; - unsigned long last_dead_count; + int last_dead_count; /* scan generation, increased every round-trip */ unsigned int generation; -- 2.20.1