nfsd: improve client_has_state to check for unused openowners

At least in the v4.0 case openowners can hang around for a while after
last close, but they shouldn't really block (for example), a new mount
with a different principal.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields 2015-10-15 16:11:01 -04:00
commit 4eaea13425