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mm: memcg: remove obsolete statistics array boundary enum item

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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 <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Acked-by: KAMEZAWA Hiroyuki <[email protected]>
Cc: Ying Han <[email protected]>
Cc: Tejun Heo <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Johannes Weiner 2012-05-29 15:07:05 -07:00 • committed by Linus Torvalds
commit 6104621de4
1 changed files with 1 additions and 2 deletions
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3
mm/memcontrol.c
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@ -88,7 +88,6 @@ enum mem_cgroup_stat_index {
MEM_CGROUP_STAT_RSS, /* # of pages charged as anon rss */
MEM_CGROUP_STAT_FILE_MAPPED, /* # of pages charged as file rss */
MEM_CGROUP_STAT_SWAPOUT, /* # of pages, swapped out */
MEM_CGROUP_STAT_DATA, /* end of data requires synchronization */
MEM_CGROUP_STAT_NSTATS,
};
@ -2135,7 +2134,7 @@ 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;