Re: [RFC PATCH 2/8] mm: Add PG_atomic

[David Hildenbrand (Red Hat)]

On 12.11.25 16:56, Matthew Wilcox wrote:
> On Wed, Nov 12, 2025 at 04:36:05PM +0530, Ojaswin Mujoo wrote:
> > From: John Garry <john.g.garry@xxxxxxxxxx>
> >
> > Add page flag PG_atomic, meaning that a folio needs to be written back
> > atomically. This will be used by for handling RWF_ATOMIC buffered IO
> > in upcoming patches.
>
> Page flags are a precious resource.  I'm not thrilled about allocating one
> to this rather niche usecase.

Fully agreed.

--
Cheers

David