str_false_true
dev_dbg(dev, "disable: %s\n", str_false_true(enabled));
dprintk("%s: link support=%s\n", __func__, str_false_true(*res == 0));
dprintk("%s: symlink support=%s\n", __func__, str_false_true(*res == 0));
dprintk("%s: case_insensitive=%s\n", __func__, str_false_true(*res == 0));
dprintk("%s: case_preserving=%s\n", __func__, str_false_true(*res == 0));
dprintk("%s: XATTR support=%s\n", __func__, str_false_true(*res == 0));