On Tue, Jun 29, 2021 at 12:43:14AM +0000, Trond Myklebust wrote:

How about just setting up a notification for unlink on those files, the
same way we set up notifications for close with the NFSv3 filecache in
nfsd?

Yes, that'd probably work.  It'd be better if we didn't have to throw
away unlinked files when the client expires, but it'd still be an
incremental improvement over what we do now.

--b.