Simply check the remainder: (zoneskip % zone_size) > 0 It will do the right thing for all zoneskip= values, and zone size being positive is checked earlier. Reviewed-by: Dmitry Fomichev <dmitry.fomichev@xxxxxxx> Signed-off-by: Alexey Dobriyan (SK hynix) <adobriyan@xxxxxxxxx> --- zbd.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) --- a/zbd.c +++ b/zbd.c @@ -285,9 +285,7 @@ static bool zbd_verify_sizes(void) return false; } - if (td->o.zone_skip && - (td->o.zone_skip < td->o.zone_size || - td->o.zone_skip % td->o.zone_size)) { + if (td->o.zone_skip % td->o.zone_size) { log_err("%s: zoneskip %llu is not a multiple of the device zone size %llu.\n", f->file_name, (unsigned long long) td->o.zone_skip, (unsigned long long) td->o.zone_size);