On Wed, Mar 12, 2025 at 12:09:41PM -0400, Kent Overstreet wrote: > > The right way ahead for swap is to literally just treat it as a slightly > > special case of direct I/o that is allowed to IS_SWAPFILE files. We > > can safely do writeback to file backed folios under memory pressure, > > so we can also go through the normal file system path. > > Yeah, and that gets us e.g. encrypted swap on bcachefs
You can already do this pretty easily, take a look at nfs_swap_rw. It just would be nice to lift the boilerplate code to common code and make this the default.
