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Re: [PATCH v1 8/9] mm: introduce and use vm_normal_page_pud()
- To: David Hildenbrand <david@xxxxxxxxxx>
- From: Oscar Salvador <osalvador@xxxxxxx>
- Date: Wed, 16 Jul 2025 10:20:43 +0200
- Authentication-results: smtp-out1.suse.de; none
- Cc: linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, nvdimm@xxxxxxxxxxxxxxx, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>, Dan Williams <dan.j.williams@xxxxxxxxx>, Matthew Wilcox <willy@xxxxxxxxxxxxx>, Jan Kara <jack@xxxxxxx>, Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>, Christian Brauner <brauner@xxxxxxxxxx>, Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>, "Liam R. Howlett" <Liam.Howlett@xxxxxxxxxx>, Vlastimil Babka <vbabka@xxxxxxx>, Mike Rapoport <rppt@xxxxxxxxxx>, Suren Baghdasaryan <surenb@xxxxxxxxxx>, Michal Hocko <mhocko@xxxxxxxx>, Zi Yan <ziy@xxxxxxxxxx>, Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>, Nico Pache <npache@xxxxxxxxxx>, Ryan Roberts <ryan.roberts@xxxxxxx>, Dev Jain <dev.jain@xxxxxxx>, Barry Song <baohua@xxxxxxxxxx>, Jann Horn <jannh@xxxxxxxxxx>, Pedro Falcato <pfalcato@xxxxxxx>, Hugh Dickins <hughd@xxxxxxxxxx>, Lance Yang <lance.yang@xxxxxxxxx>
- Delivery-date: Wed, 16 Jul 2025 08:20:56 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Tue, Jul 15, 2025 at 03:23:49PM +0200, David Hildenbrand wrote:
> Let's introduce vm_normal_page_pud(), which ends up being fairly simple
> because of our new common helpers and there not being a PUD-sized zero
> folio.
>
> Use vm_normal_page_pud() in folio_walk_start() to resolve a TODO,
> structuring the code like the other (pmd/pte) cases. Defer
> introducing vm_normal_folio_pud() until really used.
>
> Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
Reviewed-by: Oscar Salvador <osalvador@xxxxxxx>
--
Oscar Salvador
SUSE Labs
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