static void bpf_map_mmap_close(struct vm_area_struct *vma)
{
	struct bpf_map *map = vma->vm_file->private_data;

	if (vma->vm_flags & VM_MAYWRITE)
		bpf_map_write_active_dec(map);
}
static void bpf_map_mmap_close(struct vm_area_struct *vma)
{
	struct bpf_map *map = vma->vm_file->private_data;

	if (vma->vm_flags & VM_MAYWRITE)
		bpf_map_write_active_dec(map);
}