MADV_SEQUENTIAL
madvise(map, size, MADV_SEQUENTIAL);
(void) madvise(mf->poimf_xml, mf->poimf_mapsize, MADV_SEQUENTIAL);
case MADV_SEQUENTIAL:
case MADV_SEQUENTIAL:
madvise(mem, MMAP_CHUNK, MADV_SEQUENTIAL);
madvise(i_womp, i_size, MADV_SEQUENTIAL);