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mm/memcg: fix last_dead_count memory wastage

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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 <hughd@google.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Hugh Dickins 2014-01-23 15:53:30 -08:00 committed by Linus Torvalds
parent a64fb3cd61
commit d2ab70aaae
1 changed files with 1 additions and 1 deletions
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mm/memcontrol.c
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@ -149,7 +149,7 @@ struct mem_cgroup_reclaim_iter {
* matches memcg->dead_count of the hierarchy root group. * matches memcg->dead_count of the hierarchy root group.
*/ */
struct mem_cgroup *last_visited; struct mem_cgroup *last_visited;
unsigned long last_dead_count; int last_dead_count;
/* scan generation, increased every round-trip */ /* scan generation, increased every round-trip */
unsigned int generation; unsigned int generation;