Re: [PATCH RFC 19/29] mm: stop storing migration_ops in page->mapping

[Zi Yan]

On 18 Jun 2025, at 13:40, David Hildenbrand wrote:

> ... instead, look them up statically based on the page type. Maybe in the
> future we want a registration interface? At least for now, it can be
> easily handled using the two page types that actually support page
> migration.
>
> The remaining usage of page->mapping is to flag such pages as actually
> being movable (having movable_ops), which we will change next.
>
> Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
> ---
>  include/linux/balloon_compaction.h |  2 +-
>  include/linux/migrate.h            | 14 ++------------
>  include/linux/zsmalloc.h           |  2 ++
>  mm/balloon_compaction.c            |  1 -
>  mm/compaction.c                    |  5 ++---
>  mm/migrate.c                       | 23 +++++++++++++++++++++++
>  mm/zpdesc.h                        |  5 ++---
>  mm/zsmalloc.c                      |  8 +++-----
>  8 files changed, 35 insertions(+), 25 deletions(-)
>

Reviewed-by: Zi Yan <ziy@xxxxxxxxxx>

--
Best Regards,
Yan, Zi