On Thu, Jun 20, 2024 at 07:09:23AM +1000, NeilBrown wrote: > I don't see where an O_TMPFILE could fit into this, or how a different > high-level approach would be any better. ... especially given that O_TMPFILE requires and open but unlinked file, which v3 can't really support at all, and even for v4 would require quite a bit of work (although it would be very useful).