--- y/mm/memcontrol.c
+++ m/mm/memcontrol.c
@@ -3184,6 +3184,8 @@ int __memcg_kmem_charge_page(struct page
 	struct obj_cgroup *objcg;
 	int ret = 0;
 
+	if (current->flags & PF_IO_WORKER)
+		return 0;
 	objcg = get_obj_cgroup_from_current();
 	if (objcg) {
 		ret = obj_cgroup_charge_pages(objcg, gfp, 1 << order);