vma_modify_flags
vma = vma_modify_flags(&vmi, madv_behavior->prev, vma,
vma = vma_modify_flags(vmi, *prev, vma, start, end, &newflags);
vma = vma_modify_flags(vmi, *pprev, vma, start, end, &newflags);
vma = vma_modify_flags(&vmi, prev, vma, curr_start,
__must_check struct vm_area_struct *vma_modify_flags(struct vma_iterator *vmi,
vma = vma_modify_flags(&vmi, init_vma, init_vma,