PAPFN_2_MNODE
pfnmn = PAPFN_2_MNODE(pfn);
pfnmn = PAPFN_2_MNODE(npfn);
if ((pfnmn = PAPFN_2_MNODE(npfn)) != it->mi_mnode)
if ((pfnmn = PAPFN_2_MNODE(npfn)) != it->mi_mnode) {
ASSERT(PAPFN_2_MNODE(npfn) == it->mi_mnode);