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memcg: add BUILD_BUG_ON() for string tables

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Use BUILD_BUG_ON() to compile assert that memcg string tables are in sync
with corresponding enums.  There aren't currently any issues with these
tables.  This is just defensive.

Signed-off-by: Greg Thelen <gthelen@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Greg Thelen 2015-02-11 15:25:58 -08:00 committed by Linus Torvalds
parent 90cbc25088
commit 0ca44b148e
1 changed files with 4 additions and 0 deletions
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4
mm/memcontrol.c
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@ -3568,6 +3568,10 @@ static int memcg_stat_show(struct seq_file *m, void *v)
struct mem_cgroup *mi;
unsigned int i;
BUILD_BUG_ON(ARRAY_SIZE(mem_cgroup_stat_names) !=
MEM_CGROUP_STAT_NSTATS);
BUILD_BUG_ON(ARRAY_SIZE(mem_cgroup_events_names) !=
MEM_CGROUP_EVENTS_NSTATS);
BUILD_BUG_ON(ARRAY_SIZE(mem_cgroup_lru_names) != NR_LRU_LISTS);
for (i = 0; i < MEM_CGROUP_STAT_NSTATS; i++) {