fh_to_mp3
am_node *mp = fh_to_mp3(&argp->dir, &retry, VLOOK_DELETE);
extern am_node *fh_to_mp3(nfs_fh *, int *, int);
#define fh_to_mp2(fhp, rp) fh_to_mp3(fhp, rp, VLOOK_CREATE)