Thread (138 messages) 138 messages, 5 authors, 2025-07-03

Re: [PATCH v1 20/29] mm: convert "movable" flag in page->mapping to a page flag

From: Harry Yoo <hidden>
Date: 2025-07-02 11:55:58
Also in: linux-doc, linux-fsdevel, linux-mm, lkml, virtualization

On Mon, Jun 30, 2025 at 03:00:01PM +0200, David Hildenbrand wrote:
Instead, let's use a page flag. As the page flag can result in
false-positives, glue it to the page types for which we
support/implement movable_ops page migration.

The flag reused by PageMovableOps() might be sued by other pages, so
warning in case it is set in page_has_movable_ops() might result in
false-positive warnings.

Reviewed-by: Zi Yan <ziy@nvidia.com>
Signed-off-by: David Hildenbrand <redacted>
---
LGTM,
Reviewed-by: Harry Yoo <redacted>

With a question: is there any reason to change the page flag
operations to use atomic bit ops? (.e.g, using SetPageMovableOps instead
of __SetPageMovableOps)

-- 
Cheers,
Harry / Hyeonggon
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