Messages in this thread Patch in this message | | | Date | Mon, 13 Jan 2014 17:50:49 -0800 (PST) | From | Hugh Dickins <> | Subject | [PATCH 1/3] 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> --- Putting this one first as it should be nicely uncontroversial. I'm assuming much too late for v3.13, so all 3 diffed against mmotm.
mm/memcontrol.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- mmotm/mm/memcontrol.c 2014-01-10 18:25:02.236448954 -0800 +++ linux/mm/memcontrol.c 2014-01-12 22:21:10.700570471 -0800 @@ -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;
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