memcg: __mem_cgroup_free: remove stale disarm_static_keys comment

cpuset code stopped using cgroup_lock in favor of cpuset_mutex long ago.

Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
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 85df503..e8bf0fc 100644 (file)
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4724,17 +4724,6 @@ static void __mem_cgroup_free(struct mem_cgroup *memcg)
 
        free_percpu(memcg->stat);
 
-       /*
-        * We need to make sure that (at least for now), the jump label
-        * destruction code runs outside of the cgroup lock. This is because
-        * get_online_cpus(), which is called from the static_branch update,
-        * can't be called inside the cgroup_lock. cpusets are the ones
-        * enforcing this dependency, so if they ever change, we might as well.
-        *
-        * schedule_work() will guarantee this happens. Be careful if you need
-        * to move this code around, and make sure it is outside
-        * the cgroup_lock.
-        */
        disarm_static_keys(memcg);
        kfree(memcg);
 }