[PATCH 1/2] mm, memcg: better name mem_cgroup_out_of_memory()

[Yafang Shao <laoar.shao@gmail.com>]

Rename mem_cgroup_out_of_memory() to mem_cgroup_oom_kill() to indicate
that this function is used to try to kill a process.
With this change it will cooperate better with the oom events.
	function		memcg event
	mem_cgroup_oom()	oom
	mem_cgroup_oom_kill()	oom_kill

Cc: Shakeel Butt <shakeelb@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Roman Gushchin <guro@fb.com>
Cc: Greg Thelen <gthelen@google.com>
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
---
 mm/memcontrol.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 5beea03dd58a..985edce98491 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1570,7 +1570,7 @@ unsigned long mem_cgroup_size(struct mem_cgroup *memcg)
 	return page_counter_read(&memcg->memory);
 }
 
-static bool mem_cgroup_out_of_memory(struct mem_cgroup *memcg, gfp_t gfp_mask,
+static bool mem_cgroup_oom_kill(struct mem_cgroup *memcg, gfp_t gfp_mask,
 				     int order)
 {
 	struct oom_control oc = {
@@ -1799,7 +1799,7 @@ static enum oom_status mem_cgroup_oom(struct mem_cgroup *memcg, gfp_t mask, int
 	 * relying on the oom victim to make a forward progress and we can
 	 * invoke the oom killer here.
 	 *
-	 * Please note that mem_cgroup_out_of_memory might fail to find a
+	 * Please note that mem_cgroup_oom_kill might fail to find a
 	 * victim and then we have to bail out from the charge path.
 	 */
 	if (memcg->oom_kill_disable) {
@@ -1821,7 +1821,7 @@ static enum oom_status mem_cgroup_oom(struct mem_cgroup *memcg, gfp_t mask, int
 		mem_cgroup_oom_notify(memcg);
 
 	mem_cgroup_unmark_under_oom(memcg);
-	if (mem_cgroup_out_of_memory(memcg, mask, order))
+	if (mem_cgroup_oom_kill(memcg, mask, order))
 		ret = OOM_SUCCESS;
 	else
 		ret = OOM_FAILED;
@@ -1879,7 +1879,7 @@ bool mem_cgroup_oom_synchronize(bool handle)
 	if (locked && !memcg->oom_kill_disable) {
 		mem_cgroup_unmark_under_oom(memcg);
 		finish_wait(&memcg_oom_waitq, &owait.wait);
-		mem_cgroup_out_of_memory(memcg, current->memcg_oom_gfp_mask,
+		mem_cgroup_oom_kill(memcg, current->memcg_oom_gfp_mask,
 					 current->memcg_oom_order);
 	} else {
 		schedule();
@@ -6102,7 +6102,7 @@ static ssize_t memory_max_write(struct kernfs_open_file *of,
 		}
 
 		memcg_memory_event(memcg, MEMCG_OOM);
-		if (!mem_cgroup_out_of_memory(memcg, GFP_KERNEL, 0))
+		if (!mem_cgroup_oom_kill(memcg, GFP_KERNEL, 0))
 			break;
 	}
 
-- 
2.18.2