vma_flags_to_legacy
const vm_flags_t vm_flags = vma_flags_to_legacy(vma_flags);
#define VM_STACK_FLAGS vma_flags_to_legacy(VMA_STACK_FLAGS)
#define VM_SPECIAL vma_flags_to_legacy(VMA_SPECIAL_FLAGS)
vm_stat_account(mm, vma_flags_to_legacy(old_vma_flags), -nrpages);
newflags = vma_flags_to_legacy(new_vma_flags);
vma->vm_page_prot = vm_get_page_prot(vma_flags_to_legacy(vma_flags));
const vm_flags_t vm_flags = vma_flags_to_legacy(vma_flags);
#define VM_STACK_FLAGS vma_flags_to_legacy(VMA_STACK_FLAGS)
ASSERT_EQ(vma_flags_to_legacy(flags), legacy_flags);