memcg: trivial cleanups

Clean up some mess made by the "Soft limit rework" series, and a few other
things.

Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

mm/memcontrol.c

@@ -835,12 +835,12 @@ static bool mem_cgroup_event_ratelimit(struct mem_cgroup *memcg,
 }
 
 /*
- * Called from rate-limitted memcg_check_events when enough
+ * Called from rate-limited memcg_check_events when enough
  * MEM_CGROUP_TARGET_SOFTLIMIT events are accumulated and it makes sure
- * that all the parents up the hierarchy will be noticed that this group
+ * that all the parents up the hierarchy will be notified that this group
  * is in excess or that it is not in excess anymore. mmecg->soft_contributed
  * makes the transition a single action whenever the state flips from one to
- * other.
+ * the other.
  */
 static void mem_cgroup_update_soft_limit(struct mem_cgroup *memcg)
 {
@@ -1904,7 +1904,7 @@ mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg,
 	 * If any parent up to the root in the hierarchy is over its soft limit
 	 * then we have to obey and reclaim from this group as well.
 	 */
-	while((parent = parent_mem_cgroup(parent))) {
+	while ((parent = parent_mem_cgroup(parent))) {
 		if (res_counter_soft_limit_excess(&parent->res))
 			return VISIT;
 		if (parent == root)