Re: [Bug: 21.4.21] dired complains about an unrelated directory

I'm currently (as I type this in) unable to visit a directory using dired. It complains "operation not supported" on some other directory that's totally unrelated to the one I want to visit. I enabled debug-on-error and got this backtrace: Debugger entered--Lisp error: (file-error "Finding truename" "Operation not supported on transport endpoint" "/net/sfwnv/export/nv/") file-truename("/net/sfwnv/export/nv/") apply(file-truename "/net/sfwnv/export/nv/") dired-handler-fn(file-truename "/net/sfwnv/export/nv/") file-truename("/net/sfwnv/export/nv/") dired-directory-truename("/net/sfwnv/export/nv/") dired-find-buffer-nocreate("/export/kupfer/tonic/stevel/" nil) dired-internal-noselect("/export/kupfer/tonic/stevel/" nil) dired-noselect("/export/kupfer/tonic/stevel" nil) #<compiled-function (dirname &optional switches) "...(7)" [switches dirname switch-to-buffer dired-noselect] 4 ("/net/athyra/usr/local/lib/xemacs/xemacs-packages/lisp/dired/dired.elc" . 33956) (dired-read-dir-and-switches "")>("/export/kupfer/tonic/stevel" nil) call-interactively(dired) /export/kupfer/tonic/stevel/ is the directory I want to visit. /net/sfwnv/export/nv/ is an NFS directory that I had tried to visit earlier in the day but couldn't (permissions problem). I haven't looked at the relevant dired code, but I'm hypothesizing that it's trying to reclaim resources associated with the directory I couldn't visit. The buffer for that directory has this text: /net/sfwnv/export/nv: ls: error reading directory /net/sfwnv/export/nv/.: Permission denied total 0 Let's try killing that buffer... done. And now dired lets me visit /export/kupfer/tonic/stevel/.