Re: [PATCH v3 2/4] mm: thp: introduce folio_split_queue_lock and its variants

[Harry Yoo]

On Sun, Sep 28, 2025 at 07:17:00PM +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>
> Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
> Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
> Reviewed-by: Zi Yan <ziy@xxxxxxxxxx>
> Acked-by: Shakeel Butt <shakeel.butt@xxxxxxxxx>
> Acked-by: David Hildenbrand <david@xxxxxxxxxx>
> ---

Looks good to me,
Reviewed-by: Harry Yoo <harry.yoo@xxxxxxxxxx>

-- 
Cheers,
Harry / Hyeonggon