On Mon 14-05-12 20:00:46, Johannes Weiner wrote:
> MEM_CGROUP_STAT_DATA is a leftover from when item counters were living
> in the same array as ever-increasing event counters. It's no longer
> needed, use MEM_CGROUP_STAT_NSTATS to iterate over the stat array.
>
> Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxx>
> ---
> mm/memcontrol.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index 9520ee9..aef89c1 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -99,7 +99,6 @@ enum mem_cgroup_stat_index {
> MEM_CGROUP_STAT_FILE_MAPPED, /* # of pages charged as file rss */
> MEM_CGROUP_STAT_MLOCK, /* # of pages charged as mlock()ed */
> MEM_CGROUP_STAT_SWAPOUT, /* # of pages, swapped out */
> - MEM_CGROUP_STAT_DATA, /* end of data requires synchronization */
> MEM_CGROUP_STAT_NSTATS,
> };
>
> @@ -2158,7 +2157,7 @@ static void mem_cgroup_drain_pcp_counter(struct mem_cgroup *memcg, int cpu)
> int i;
>
> spin_lock(&memcg->pcp_counter_lock);
> - for (i = 0; i < MEM_CGROUP_STAT_DATA; i++) {
> + for (i = 0; i < MEM_CGROUP_STAT_NSTATS; i++) {
> long x = per_cpu(memcg->stat->count[i], cpu);
>
> per_cpu(memcg->stat->count[i], cpu) = 0;
> --
> 1.7.10.1
>
--
Michal Hocko
SUSE Labs
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9
Czech Republic
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