vma_set_range
vma_set_range(vma, addr, addr + len, 0);
vma_set_range(vma, start, end, pgoff);
vma_set_range(new_vma, addr, addr + len, pgoff);
vma_set_range(vma, map->addr, map->end, map->pgoff);
vma_set_range(vma, addr, addr + len, addr >> PAGE_SHIFT);
vma_set_range(adjust, vmg->end, adjust->vm_end, pgoff);
vma_set_range(vma, vmg->start, vmg->end, vmg->pgoff);
void vma_set_range(struct vm_area_struct *vma,