cdbounce
struct cdbounce *bounce = bp->b_private;
cd_make_bounce(struct cd_softc *cd, struct buf *bp, struct cdbounce **bouncep)
struct cdbounce *bounce;
bounce = malloc(sizeof(struct cdbounce), M_DEVBUF, M_NOWAIT|M_ZERO);
struct cdbounce *bounce = NULL;