diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 37bae5571a47..6f0c5e7f9197 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -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;