On Mon, Oct 25, 2021 at 08:51:02PM +0800, Muchun Song wrote: > Since slab objects and kmem pages are charged to object cgroup instead > of memory cgroup, memcg_reparent_objcgs() will reparent this cgroup and > all its descendants to its parent cgroup. This already makes further > list_lru_add()'s add elements to the parent's list. So it is unnecessary > to change kmemcg_id of an offline cgroup to its parent's id. It just > wastes CPU cycles. Just to remove those redundant code. > > Signed-off-by: Muchun Song <songmuchun@xxxxxxxxxxxxx> Acked-by: Roman Gushchin <guro@xxxxxx> Thanks!
