bd_minphys
return (physio(bd_strategy, NULL, dev, B_READ, bd_minphys, uio));
return (physio(bd_strategy, NULL, dev, B_WRITE, bd_minphys, uio));
return (aphysio(bd_strategy, anocancel, dev, B_READ, bd_minphys, aio));
return (aphysio(bd_strategy, anocancel, dev, B_WRITE, bd_minphys, aio));