hmm_walk_ops      855 mm/hmm.c       static const struct mm_walk_ops hmm_walk_ops = {
hmm_walk_ops      927 mm/hmm.c       		walk_page_range(vma->vm_mm, start, end, &hmm_walk_ops,
hmm_walk_ops      932 mm/hmm.c       					&hmm_walk_ops, &hmm_vma_walk);