This sounds very similar indeed. The central thesis of the paper seems to be that the grain of locking is the concern, which is what Disruptor directly touches

This sounds very similar indeed. The central thesis of the paper seems to be that the grain of locking is the concern, which is what Disruptor directly touches on as well. In a Disruptor implementation, you are typically processing batches of things, and locks can be acquired along lines of batches.