On 03/29/2018 11:01 AM, Davidlohr Bueso wrote: > 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]>
In reality, I think RWSEM_SPIN_ON_OWNER is almost always set if the xadd version of rwsem is used. So we may do some cleanup here if necessary. -Longman
