Re: [PATCH 2/4] mm: thp: introduce folio_split_queue_lock and its variants

[Shakeel Butt]

On Fri, Sep 19, 2025 at 11:46:33AM +0800, Qi Zheng wrote:
> From: Muchun Song <songmuchun@xxxxxxxxxxxxx>
> 
> In future memcg removal, the binding between a folio and a memcg may
> change, making the split lock within the memcg unstable when held.
> 
> A new approach is required to reparent the split queue to its parent. This
> patch starts introducing a unified way to acquire the split lock for
> future work.
> 
> It's a code-only refactoring with no functional changes.
> 
> Signed-off-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
> Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
> Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>

Acked-by: Shakeel Butt <shakeel.butt@xxxxxxxxx>