fs: lockd: Use ktime_get_ns()

Replace the ever recurring:
        ts = ktime_get_ts();
        ns = timespec_to_ns(&ts);
with
        ns = ktime_get_ns();
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Acked-by: NTrond Myklebust <trond.myklebust@primarydata.com>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Signed-off-by: NJohn Stultz <john.stultz@linaro.org>

fs/lockd/mon.c

@@ -306,11 +306,9 @@ static struct nsm_handle *nsm_lookup_priv(const struct nsm_private *priv)
 static void nsm_init_private(struct nsm_handle *nsm)
 {
 	u64 *p = (u64 *)&nsm->sm_priv.data;
-	struct timespec ts;
 	s64 ns;
 
-	ktime_get_ts(&ts);
-	ns = timespec_to_ns(&ts);
+	ns = ktime_get_ns();
 	put_unaligned(ns, p);
 	put_unaligned((unsigned long)nsm, p + 1);
 }