Re: [PATCH RFC 17/29] mm/page_isolation: drop __folio_test_movable() check for large folios

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To: David Hildenbrand <david@xxxxxxxxxx>
Subject: Re: [PATCH RFC 17/29] mm/page_isolation: drop __folio_test_movable() check for large folios
From: Zi Yan <ziy@xxxxxxxxxx>
Date: Fri, 20 Jun 2025 16:38:15 -0400
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>, 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>, 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>, "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: <20250618174014.1168640-18-david@redhat.com>

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

> Currently, we only support migration of individual non-folio pages, so
> we can not run into that.
>
> Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
> ---
>  mm/page_isolation.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
Reviewed-by: Zi Yan <ziy@xxxxxxxxxx>

--
Best Regards,
Yan, Zi

References:
- [PATCH RFC 00/29] mm/migration: rework movable_ops page migration (part 1)
  - From: David Hildenbrand
- [PATCH RFC 17/29] mm/page_isolation: drop __folio_test_movable() check for large folios
  - From: David Hildenbrand

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