On Thu, 29 Mar 2018, Waiman Long wrote:
Because it checks the owner field which is present only if RWSEM_SPIN_ON_OWNER is defined. Mutex is different in the sense that the owner field is always there no matter if MUTEX_SPIN_ON_OWNER is set or not.
Ah right; that's after Peter's mutex rewrite iirc. No objections from me. Acked-by: Davidlohr Bueso <[email protected]>

