DISKFLAG_OPEN
if (((sc->ld_disk->d_flags & DISKFLAG_OPEN) ||
if (((sc->pd_disk->d_flags & DISKFLAG_OPEN) ||
if ((dp->d_flags & DISKFLAG_OPEN) != 0) {
dp->d_flags |= DISKFLAG_OPEN;
dp->d_flags &= ~DISKFLAG_OPEN;