Re: [PATCH v3 3/6] mm/sparse-vmemmap: drop Device DAX-specific population path

[Lance Yang]

On Tue, Sep 29, 2026 at 01:32:28PM +0800, Muchun Song wrote:
>The common vmemmap path selects the shared page for optimized mappings
>itself, so Device DAX no longer needs vmemmap_populate_compound_pages()
>to find a shared tail page and pass its backing PFN through the generic
>population helpers.
>
>Remove the Device DAX-specific population path and let section memmap
>population always use vmemmap_populate(). The powerpc retains an
>architecture-specific compound-page implementation, so select it directly
>from radix__vmemmap_populate() for optimizable sections.
>
>Signed-off-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
>Acked-by: Qi Zheng <qi.zheng@xxxxxxxxx>
>---

LGTM! Feel free to add:

Reviewed-by: Lance Yang <lance.yang@xxxxxxxxx>