On Thu, Nov 04, 2021 at 09:17:40AM +0100, Christoph Hellwig wrote:

On Wed, Nov 03, 2021 at 12:59:31PM -0500, Eric Sandeen wrote:

quoted

Christoph, can I ask what the end game looks like, here? If dax is completely
decoupled from block devices, are there user-visible changes?

Yes.

quoted

If I want to
run fs-dax on a pmem device - what do I point mkfs at, if not a block device?

The rough plan is to use the device dax character devices.  I'll hopefully
have a draft version in the next days.

/me wonders, are block devices going away?  Will mkfs.xfs have to learn
how to talk to certain chardevs?  I guess jffs2 and others already do
that kind of thing... but I suppose I can wait for the real draft to
show up to ramble further. ;)

--D