memcg: mark memcg1_events static const

Mark memcg1_events static: it's only used by memcontrol.c.  And mark it
const: it's not modified.

Link: http://lkml.kernel.org/r/20180503192940.94971-1-gthelen@google.com
Signed-off-by: Greg Thelen <gthelen@google.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 2751259f0a76d8ff1ac6390a2ca127af5305c6ed..847a775af225ca6d7e1f8066f32a237f39274450 100644 (file)
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -3083,7 +3083,7 @@ static int memcg_numa_stat_show(struct seq_file *m, void *v)
 #endif /* CONFIG_NUMA */
 
 /* Universal VM events cgroup1 shows, original sort order */
-unsigned int memcg1_events[] = {
+static const unsigned int memcg1_events[] = {
        PGPGIN,
        PGPGOUT,
        PGFAULT,