Re: [PATCH v5 update 30/32] mm: memcontrol: convert objcg to be per-memcg per-node type

[Shakeel Butt]

On Wed, Feb 25, 2026 at 05:44:56PM +0800, Qi Zheng wrote:
> From: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
> 
> Convert objcg to be per-memcg per-node type, so that when reparent LRU
> folios later, we can hold the lru lock at the node level, thus avoiding
> holding too many lru locks at once.
> 
> Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
> ---
> changlog:
>  - fix a missing root_obj_cgroup conversion and completely delete
>    root_obj_cgroup.
> 

After this patch, do we care that page/folio/slab points to the objcg of the
same node as them for a given memcg?