On Tue, Jan 11, 2022 at 01:03:01AM +0000, Wei Yang wrote: > The parent we get from page_counter is correct, while this is two > different hierarchy. > > Let's retrieve the parent memcg from css.parent just like parent_cs(), > blkcg_parent(), etc. Does it bring any benefits except consistency? > > Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxx> Reviewed-by: Roman Gushchin <guro@xxxxxx> Thanks!