===========
Test matrix
===========

rusage002:
  do_mmap(),/dev/shm with --mpol_shm_premap,pre-page->get_page(),st->set_pte()->munmap()->clear_range() [OK]

rusage003:
  do_mmap(),/dev/shm without --mpol_shm_premap,pre-page->get_page(),st->set_pte()->munmap()->clear_range() [OK]

rusage010:
  app->mmap() 2M,anon,pre-page ->set_range()->munmap()->free_process_memory_range()->clear_range()[OK]

rusage008: sharing file-map page
fork()->filemap->pf->clear_range() [OK]

rusage009: sharing shmget() page
fork()->shmat()->pf->clear_range() [OK]

rusage011: sharing xpmem page
fork()->xpmem_attach()->pf->clear_range() [OK]

device file (ib ping-pong) in verbs directory
  devobj()->get_page()->pf->munmap()->clear_range() [OK]
  remote page fault->cow->clear_range() [OK]
  ld-linux.so->mmap private->cow->clear_range() [OK]

