vndstrategy
return readdisklabel(DISKLABELDEV(dev), vndstrategy, lp, spoofonly);
return (physio(vndstrategy, dev, B_READ, minphys, uio));
return (physio(vndstrategy, dev, B_WRITE, minphys, uio));
vndstrategy, sc->sc_dk.dk_label);
if (bdevsw[major(dev)].d_strategy == vndstrategy)