On Tue, Oct 21, 2025 at 11:25:35AM -0400, Jeff Layton wrote:

Behold, another version of directory delegations. This version contains
support for recall-only delegations. Support for CB_NOTIFY will be
forthcoming (once the client-side patches have caught up).

This main differences in this version are bugfixes, but the last patch
adds a more formal API for userland to request a delegation. That
support is optional. We can drop it and the rest of the series should be
fine.

My main interest in making delegations available to userland is to allow
testing this support without nfsd. I have an xfstest ready to submit for
this if that support looks acceptable. If it is, then I'll also plan to
submit an update for fcntl(2).

Christian, Chuck mentioned he was fine with you merging the nfsd bits
too, if you're willing to take the whole pile.

Absolutely!