Re: [PATCH V5 00/12] Enable per-file/per-directory DAX operations V5

[Christoph Hellwig]

On Wed, Mar 11, 2020 at 05:39:42PM +1100, Dave Chinner wrote:
> IOWs, the dax_associate_page() related functionality probably needs
> to be a filesystem callout - part of the aops vector, I think, so
> that device dax can still use it. That way XFS can go it's own way,
> while ext4 and device dax can continue to use the existing mechanism
> mechanisn that is currently implemented....

s/XFS/XFS with rmap/, as most XFS file systems currently don't have
that enabled we'll also need to keep the legacy path around.