On Thu, Nov 04, 2021 at 10:34:17AM -0700, Darrick J. Wong wrote: > /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. ;) Right now I've mostly been looking into the kernel side. An no, I do not expect /dev/pmem* to go away as you'll still need it for a not DAX aware file system and/or application (such as mkfs initially). But yes, just pointing mkfs to the chardev should be doable with very little work. We can point it to a regular file after all.