fh_mount
fhp != NULL && fhp->fh_mount == pmp; fhp = nfhp) {
KASSERT(fhp->fh_mount != pmp);
if (pnp->fh_mount != fhp->fhk_mount)
return (intptr_t)pnp->fh_mount - (intptr_t)fhp->fhk_mount;