tree 0a56a71e11f39a638be30064411dc6c3363114b6
parent 617588d5186c887eb94321b021bb5a46f896f4b3
author J. Bruce Fields <bfields@redhat.com> 1330971539 -0500
committer Al Viro <viro@zeniv.linux.org.uk> 1383974201 -0500

locks: implement delegations

Implement NFSv4 delegations at the vfs level using the new FL_DELEG lock
type.

Note nfsd is the only delegation user and is only using read
delegations.  Warn on any attempt to set a write delegation for now.
We'll come back to that case later.

Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>