DRBD_A_DISK_CONF_READ_BALANCING
if (nla_put_u32(skb, DRBD_A_DISK_CONF_READ_BALANCING, s->read_balancing))
[DRBD_A_DISK_CONF_READ_BALANCING] = { .type = NLA_U32, },
nla = ntb[DRBD_A_DISK_CONF_READ_BALANCING];