static inline void bt_index_atomic_inc(atomic_t *index)
{
	int old = atomic_read(index);
	int new = bt_index_inc(old);
	atomic_cmpxchg(index, old, new);
}

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.