bio_track_wait
error = bio_track_wait(&vp->v_track_write, slpflag, slptimeo);
bio_track_wait(&vp->v_track_write, 0, 0);
bio_track_wait(&vp->v_track_write, 0, 0);
error = bio_track_wait(&vp->v_track_write, 0, 0);
bio_track_wait(&vp->v_track_write, 0, 0);
int bio_track_wait(struct bio_track *track, int slp_flags, int slp_timo);
bio_track_wait(&vp->v_track_write, 0, 0);
bio_track_wait(&vp->v_track_write, 0, 0);
bio_track_wait(&vp->v_track_write, 0, 0); /* XXX */
bio_track_wait(&vp->v_track_write, 0, 0);
error = bio_track_wait(&vp->v_track_write,
bio_track_wait(&vp->v_track_write, 0, 0);
bio_track_wait(NULL, 0, 0); /* XXX */
bio_track_wait(&vp->v_track_write, 0, 0);