DMA_BUF_IOCTL_SYNC
case DMA_BUF_IOCTL_SYNC:
return ioctl(fd, DMA_BUF_IOCTL_SYNC, &sync);
ioctl(dst->fd, DMA_BUF_IOCTL_SYNC, &sync);
ioctl(dst->fd, DMA_BUF_IOCTL_SYNC, &sync);
ioctl(src->fd, DMA_BUF_IOCTL_SYNC, &sync);
ioctl(src->fd, DMA_BUF_IOCTL_SYNC, &sync);