SIS_D_MASK
raid->width = (meta->type_total_disks & SIS_D_MASK);
raid->width = (meta->type_total_disks & SIS_D_MASK);
raid->total_disks = (meta->type_total_disks & SIS_D_MASK);
meta->type_total_disks |= (rdp->total_disks & SIS_D_MASK);
kprintf("total_disks %u\n", meta->type_total_disks & SIS_D_MASK);