[LTP] [PUSHED] zram01.sh: Workaround division by 0 on vfat on ppc64le

[Petr Vorel]

Hi Richie,

> Repeatedly read /sys/block/zram*/mm_stat for 1 sec. This should fix bug
> on ppc64le on stable kernels, where mem_used_total is often 0.

> Signed-off-by: Petr Vorel <pvorel@suse.cz>
> Reviewed-by: Li Wang <liwang@redhat.com>
> Reviewed-by: Richard Palethorpe <rpalethorpe@suse.com>

> [rpalethorpe: s/loop/check/ suggested by Li]
> ---

> rpalethorpe:
>         This may not fix the problem, but it can rule out a simple race
>         condition.

thanks a lot for finishing the effort!
I was waiting for Cyril to have his ack.

Kind regards,
Petr