tree 80dc34d9cec1992a7aee96146ce668384aa7d30a
parent fa0a21269f807bb2e95b8b642c4a739714780172
author J. Bruce Fields <bfields@redhat.com> 1280326137 -0400
committer J. Bruce Fields <bfields@redhat.com> 1280433951 -0400

nfsd4: don't pretend to support write delegations

The delegation code mostly pretends to support either read or write
delegations.  However, correct support for write delegations would
require, for example, breaking of delegations (and/or implementation of
cb_getattr) on stat.  Currently all that stops us from handing out
delegations is a subtle reference-counting issue.

Avoid confusion by adding an earlier check that explicitly refuses write
delegations.

For now, though, I'm not going so far as to rip out existing
half-support for write delegations, in case we get around to using that
soon.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>