MD_RDWR
mddev->ro = MD_RDWR;
mddev->ro = MD_RDWR;
mddev->ro = MD_RDWR;
case MD_RDWR:
mddev->ro = MD_RDWR;
mddev->ro = MD_RDWR;
mddev->ro = MD_RDWR;
mddev->ro = MD_RDWR;
mddev->ro = MD_RDWR;
mddev->ro = MD_RDWR;
mddev->ro = MD_RDWR;
mddev->ro = MD_RDWR;
return (mddev->ro == MD_RDWR);