On Sun, Feb 28, 2021 at 02:58:22AM +0000, Al Viro wrote: > TBH, I don't understand what are you trying to achieve - > what will that mkdir+open combination buy you, especially > since that atomicity goes straight out of window if you try > to use that on e.g. NFS. How is the userland supposed to make > use of that thing? For what it's worth, the RPC that creates a directory can also get a filehandle of the new directory, so I don't think there's anything in the NFS protocol that would *prevent* implementing this. (Whether that's useful, I don't know.) --b.