Sigh. From the article itself:

> I hope to have convinced you to avoid spinlocks, even for very short sections. Spinlocks are only a benefit if you really really care about the fast path and are certain that the lock will essentially always be free to take. On my computer the fast path on a spinlock is roughly 7ns and on a mutex it’s roughly 14ns, so both of those numbers are very fast. But when spinlocks go bad, the scheduler can be really confused, at least on Linux.