mm: memcontrol: replace mem_cgroup_lruvec_online with mem_cgroup_online

mem_cgroup_lruvec_online() takes lruvec, but it only needs memcg.  Since
get_scan_count(), which is the only user of this function, now possesses
pointer to memcg, let's pass memcg directly to mem_cgroup_online() instead
of picking it out of lruvec and rename the function accordingly.

Signed-off-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 014ff89a4aa5..9a8556e49cd9 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1997,7 +1997,7 @@ static void get_scan_count(struct lruvec *lruvec, struct mem_cgroup *memcg,
         if (current_is_kswapd()) {
                 if (!zone_reclaimable(zone))
                         force_scan = true;
-                if (!mem_cgroup_lruvec_online(lruvec))
+                if (!mem_cgroup_online(memcg))
                         force_scan = true;
         }
         if (!global_reclaim(sc))