Nothing should need to be serialised with FREE_STATEID on the client,
so let's make the RPC call always asynchronous. Also constify the
stateid argument.
Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com>
Tested-by: NOleg Drokin <green@linuxhacker.ru>
Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>