NFSv4: Mark the lock and open stateids as invalid after freeing them

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>

fs/nfs/nfs4proc.c

@@ -2560,6 +2560,7 @@ static int nfs41_check_expired_locks(struct nfs4_state *state)
 			if (status == -NFS4ERR_EXPIRED ||
 			    status == -NFS4ERR_BAD_STATEID) {
 				clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags);
+				lsp->ls_stateid.type = NFS4_INVALID_STATEID_TYPE;
 				if (!recover_lost_locks)
 					set_bit(NFS_LOCK_LOST, &lsp->ls_flags);
 			} else if (status != NFS_OK) {
@@ -2605,6 +2606,7 @@ static int nfs41_check_open_stateid(struct nfs4_state *state)
 		clear_bit(NFS_O_WRONLY_STATE, &state->flags);
 		clear_bit(NFS_O_RDWR_STATE, &state->flags);
 		clear_bit(NFS_OPEN_STATE, &state->flags);
+		stateid->type = NFS4_INVALID_STATEID_TYPE;
 	}
 	return status;
 }