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Commit d2ab70aa authored by Hugh Dickins's avatar Hugh Dickins Committed by Linus Torvalds
Browse files

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: default avatarHugh Dickins <hughd@google.com>
Acked-by: default avatarMichal Hocko <mhocko@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent a64fb3cd

mm/memcontrol.c

+1 −1
Original line number Diff line number Diff line
@@ -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;