Re: [PATCH] f2fs: do not support mmap write for large folio

Christoph Hellwig
2026-04-08T05:03:45Z

On Tue, Apr 07, 2026 at 10:58:11PM +0000, Jaegeuk Kim wrote:
> On 04/06, Christoph Hellwig wrote:
> > On Mon, Apr 06, 2026 at 03:49:40PM +0000, Jaegeuk Kim wrote:
> > > Let's check mmmap writes onto the large folio.
> >
> > Why? And how is this not breaking applications?
>
> Since we only support the large folio on the read case.

In general spelling such basic out in the commit log, and even comments
is really helpful. I'm curious how this works, though - by the time
you read a large folio you don't know if it will ever be written to.