memcg: rename MEM_CGROUP_STAT_SWAPOUT as MEM_CGROUP_STAT_SWAP

MEM_CGROUP_STAT_SWAPOUT represents the usage of swap rather than
the number of swap-out events. Rename it to be MEM_CGROUP_STAT_SWAP.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Hugh Dickins <hughd@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index f72b5e52451a7d8e62648dbfe211e5ff11c7c34f..91ce7b2ee1e484e44c4d9cf95a647dcc6b86c202 100644 (file)
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -87,7 +87,7 @@ enum mem_cgroup_stat_index {
        MEM_CGROUP_STAT_CACHE,     /* # of pages charged as cache */
        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_SWAP, /* # of pages, swapped out */
        MEM_CGROUP_STAT_NSTATS,
 };
 
@@ -703,7 +703,7 @@ static void mem_cgroup_swap_statistics(struct mem_cgroup *memcg,
                                         bool charge)
 {
        int val = (charge) ? 1 : -1;
-       this_cpu_add(memcg->stat->count[MEM_CGROUP_STAT_SWAPOUT], val);
+       this_cpu_add(memcg->stat->count[MEM_CGROUP_STAT_SWAP], val);
 }
 
 static unsigned long mem_cgroup_read_events(struct mem_cgroup *memcg,
@@ -3831,7 +3831,7 @@ static inline u64 mem_cgroup_usage(struct mem_cgroup *memcg, bool swap)
        val += mem_cgroup_recursive_stat(memcg, MEM_CGROUP_STAT_RSS);
 
        if (swap)
-               val += mem_cgroup_recursive_stat(memcg, MEM_CGROUP_STAT_SWAPOUT);
+               val += mem_cgroup_recursive_stat(memcg, MEM_CGROUP_STAT_SWAP);
 
        return val << PAGE_SHIFT;
 }
@@ -4082,7 +4082,7 @@ static int mem_control_stat_show(struct cgroup *cont, struct cftype *cft,
        unsigned int i;
 
        for (i = 0; i < MEM_CGROUP_STAT_NSTATS; i++) {
-               if (i == MEM_CGROUP_STAT_SWAPOUT && !do_swap_account)
+               if (i == MEM_CGROUP_STAT_SWAP && !do_swap_account)
                        continue;
                seq_printf(m, "%s %ld\n", mem_cgroup_stat_names[i],
                           mem_cgroup_read_stat(memcg, i) * PAGE_SIZE);
@@ -4109,7 +4109,7 @@ static int mem_control_stat_show(struct cgroup *cont, struct cftype *cft,
        for (i = 0; i < MEM_CGROUP_STAT_NSTATS; i++) {
                long long val = 0;
 
-               if (i == MEM_CGROUP_STAT_SWAPOUT && !do_swap_account)
+               if (i == MEM_CGROUP_STAT_SWAP && !do_swap_account)
                        continue;
                for_each_mem_cgroup_tree(mi, memcg)
                        val += mem_cgroup_read_stat(mi, i) * PAGE_SIZE;