apply_mask_val
ns = sanitize_state(device, os, apply_mask_val(os, mask, val), NULL);
ns = apply_mask_val(os, mask, val);
ns = apply_mask_val(drbd_read_state(device), mask, val);
ns = sanitize_state(device, os, apply_mask_val(os, mask, val), NULL);
ns = sanitize_state(device, os, apply_mask_val(os, mask, val), NULL);
ns = apply_mask_val(drbd_read_state(device), mask, val);