sunrpc: cache : Replace seq_printf with seq_puts

seq_puts is a lot cheaper than seq_printf, so use that to print
literal strings.
Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

net/sunrpc/cache.c

@@ -1436,10 +1436,10 @@ static int c_show(struct seq_file *m, void *p)
 	cache_get(cp);
 	if (cache_check(cd, cp, NULL))
 		/* cache_check does a cache_put on failure */
-		seq_printf(m, "# ");
+		seq_puts(m, "# ");
 	else {
 		if (cache_is_expired(cd, cp))
-			seq_printf(m, "# ");
+			seq_puts(m, "# ");
 		cache_put(cp, cd);
 	}