[LTP] [PATCH v5 4/6] Refactor mqns_04 using new LTP API

[Petr Vorel]

Hi Andrea,

+++ b/testcases/kernel/containers/mqns/mqns_04.c
...
> +	tst_res(TINFO, "Try to create %s from parent", mqueue2);

> -	mkdir(DEV_MQUEUE2, 0755);
> +	TST_EXP_FAIL(creat(mqueue2, 0755), EACCES);
OK, you created MQNAME2 (asked by Richie in v4).

> +	if (!TST_PASS)
> +		tst_atomic_inc(mq_freed2);

> -	tst_resm(TINFO, "Checking mqueue filesystem lifetime");
> +	SAFE_UMOUNT(devdir);
> +}

I suppose it does not make sense to spawn plain process as it's done in
mqns_03.c, right?
Maybe it'd be worth to mention clone and unshare modes in [Description].

Reviewed-by: Petr Vorel <pvorel@suse.cz>

Kind regards,
Petr