si_disk
if (sc->dev && sc->dev->si_disk) {
sc->dev->si_disk,
dp = dev->si_disk;
dp = dev->si_disk;
dp = dev->si_disk;
dp = dev->si_disk;
KKASSERT(dev->si_disk == dp);
dp = dev->si_disk;
struct disk *dp = dev->si_disk;
ndev->si_disk = dp;
ndev->si_disk = dp;
dp->d_cdev->si_disk = dp;
dev->si_disk, NULL);
dev->si_disk, sp);
disk_msg_send_sync(DISK_SLICE_REPROBE, dev->si_disk, sp);
disk_msg_send_sync(DISK_SLICE_REPROBE, dev->si_disk, sp);