Re: [PATCH v1 10/29] mm/migrate: remove folio_test_movable() and folio_movable_ops()

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To: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>
Subject: Re: [PATCH v1 10/29] mm/migrate: remove folio_test_movable() and folio_movable_ops()
From: David Hildenbrand <david@xxxxxxxxxx>
Date: Tue, 1 Jul 2025 12:15:41 +0200
Cc: linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linux-doc@xxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, virtualization@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, Madhavan Srinivasan <maddy@xxxxxxxxxxxxx>, Michael Ellerman <mpe@xxxxxxxxxxxxxx>, Nicholas Piggin <npiggin@xxxxxxxxx>, Christophe Leroy <christophe.leroy@xxxxxxxxxx>, Jerrin Shaji George <jerrin.shaji-george@xxxxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>, "Michael S. Tsirkin" <mst@xxxxxxxxxx>, Jason Wang <jasowang@xxxxxxxxxx>, Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx>, Eugenio Pérez <eperezma@xxxxxxxxxx>, Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>, Christian Brauner <brauner@xxxxxxxxxx>, Jan Kara <jack@xxxxxxx>, Zi Yan <ziy@xxxxxxxxxx>, Matthew Brost <matthew.brost@xxxxxxxxx>, Joshua Hahn <joshua.hahnjy@xxxxxxxxx>, Rakie Kim <rakie.kim@xxxxxx>, Byungchul Park <byungchul@xxxxxx>, Gregory Price <gourry@xxxxxxxxxx>, Ying Huang <ying.huang@xxxxxxxxxxxxxxxxx>, Alistair Popple <apopple@xxxxxxxxxx>, "Liam R. Howlett" <Liam.Howlett@xxxxxxxxxx>, Vlastimil Babka <vbabka@xxxxxxx>, Mike Rapoport <rppt@xxxxxxxxxx>, Suren Baghdasaryan <surenb@xxxxxxxxxx>, Michal Hocko <mhocko@xxxxxxxx>, "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>, Minchan Kim <minchan@xxxxxxxxxx>, Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>, Brendan Jackman <jackmanb@xxxxxxxxxx>, Johannes Weiner <hannes@xxxxxxxxxxx>, Jason Gunthorpe <jgg@xxxxxxxx>, John Hubbard <jhubbard@xxxxxxxxxx>, Peter Xu <peterx@xxxxxxxxxx>, Xu Xin <xu.xin16@xxxxxxxxxx>, Chengming Zhou <chengming.zhou@xxxxxxxxx>, Miaohe Lin <linmiaohe@xxxxxxxxxx>, Naoya Horiguchi <nao.horiguchi@xxxxxxxxx>, Oscar Salvador <osalvador@xxxxxxx>, Rik van Riel <riel@xxxxxxxxxxx>, Harry Yoo <harry.yoo@xxxxxxxxxx>, Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>, Shakeel Butt <shakeel.butt@xxxxxxxxx>
In-reply-to: <100ed589-d3cf-4e31-b8d1-036a8bf77201@lucifer.local>
Organization: Red Hat
User-agent: Mozilla Thunderbird

On 30.06.25 19:07, Lorenzo Stoakes wrote:

On Mon, Jun 30, 2025 at 02:59:51PM +0200, David Hildenbrand wrote:

Folios will have nothing to do with movable_ops page migration. These
functions are now unused, so let's remove them.


Maybe worth mentioning that __folio_test_movable() is still a thing (for now).

"Note that __folio_test_movable() and friends will be removed separatelynext, after more rework."


Thanks!

--
Cheers,

David / dhildenb

Follow-Ups:
- Re: [PATCH v1 10/29] mm/migrate: remove folio_test_movable() and folio_movable_ops()
  - From: Lorenzo Stoakes

References:
- [PATCH v1 00/29] mm/migration: rework movable_ops page migration (part 1)
  - From: David Hildenbrand
- [PATCH v1 10/29] mm/migrate: remove folio_test_movable() and folio_movable_ops()
  - From: David Hildenbrand
- Re: [PATCH v1 10/29] mm/migrate: remove folio_test_movable() and folio_movable_ops()
  - From: Lorenzo Stoakes

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