Re: [PATCH 3/4] mm/memcg: retrieve parent memcg from css.parent

[Roman Gushchin]

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!