Re: [PATCH v2 3/5] mm: kmem: make memcg keep a reference to the original objcg

[Shakeel Butt]

On Mon, Oct 09, 2023 at 05:09:27PM -0700, Roman Gushchin wrote:
> Keep a reference to the original objcg object for the entire life
> of a memcg structure.
> 
> This allows to simplify the synchronization on the kernel memory
> allocation paths: pinning a (live) memcg will also pin the
> corresponding objcg.
> 
> The memory overhead of this change is minimal because object cgroups
> usually outlive their corresponding memory cgroups even without this
> change, so it's only an additional pointer per memcg.
> 
> Signed-off-by: Roman Gushchin (Cruise) <roman.gushchin@xxxxxxxxx>

Acked-by: Shakeel Butt <shakeelb@xxxxxxxxxx>