GD_NEED_PART_SCAN
test_bit(GD_NEED_PART_SCAN, &disk->state))
if (test_bit(GD_NEED_PART_SCAN, &disk->state)) {
set_bit(GD_NEED_PART_SCAN, &disk->state);
set_bit(GD_NEED_PART_SCAN, &disk->state);
set_bit(GD_NEED_PART_SCAN, &disk->state);
clear_bit(GD_NEED_PART_SCAN, &disk->state);
set_bit(GD_NEED_PART_SCAN, &disk->state);
clear_bit(GD_NEED_PART_SCAN, &disk->state);
set_bit(GD_NEED_PART_SCAN, &nbd->disk->state);
set_bit(GD_NEED_PART_SCAN, &disk->state);
set_bit(GD_NEED_PART_SCAN, &disk->state);
set_bit(GD_NEED_PART_SCAN, &nbd->disk->state);
return test_bit(GD_NEED_PART_SCAN, &disk->state);