UN_CACHED
if (ohash != nhash && (un->un_cflags & UN_CACHED)) {
un->un_cflags &= ~UN_CACHED;
un->un_cflags |= UN_CACHED;
if (ohash != nhash && (un->un_cflags & UN_CACHED)) {
un->un_cflags &= ~UN_CACHED;
un->un_cflags |= UN_CACHED;
if (un->un_cflags & UN_CACHED) {
un->un_cflags &= ~UN_CACHED;
un->un_cflags |= UN_CACHED;
if (un->un_cflags & UN_CACHED) {
un->un_cflags &= ~UN_CACHED;
*ap->a_recycle = ((un->un_cflags & UN_CACHED) == 0);