The event_list for memcg is only valid for v1 and not used for v2,
so it's unnessesary to handle event_list for v2.
Signed-off-by: Xiu Jianfeng <xiujianfeng@xxxxxxxxxx>
---
mm/memcontrol.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index d127c9c5fabf..4254f9cd05f4 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -5881,12 +5881,14 @@ static void mem_cgroup_css_offline(struct cgroup_subsys_state *css)
* Notify userspace about cgroup removing only after rmdir of cgroup
* directory to avoid race between userspace and kernelspace.
*/
- spin_lock_irq(&memcg->event_list_lock);
- list_for_each_entry_safe(event, tmp, &memcg->event_list, list) {
- list_del_init(&event->list);
- schedule_work(&event->remove);
+ if (!cgroup_subsys_on_dfl(memory_cgrp_subsys)) {
+ spin_lock_irq(&memcg->event_list_lock);
+ list_for_each_entry_safe(event, tmp, &memcg->event_list, list) {
+ list_del_init(&event->list);
+ schedule_work(&event->remove);
+ }
+ spin_unlock_irq(&memcg->event_list_lock);
}
- spin_unlock_irq(&memcg->event_list_lock);
page_counter_set_min(&memcg->memory, 0);
page_counter_set_low(&memcg->memory, 0);
--
2.34.1
