On Mon 13-01-14 17:50:49, Hugh Dickins wrote:
> 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@xxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxx>
> ---
> 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;
--
Michal Hocko
SUSE Labs
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