Re: [PATCH 6/6] locking/rwsem: Check for active lock before bailing on spinning

On Sun, 2015-01-25 at 23:36 -0800, Davidlohr Bueso wrote: > 37e9562453b (locking/rwsem: Allow conservative optimistic > spinning when readers have lock) forced the default for > optimistic spinning to be disabled if the lock owner was > nil, which makes much sense for readers. However, while > it i

[PATCH 6/6] locking/rwsem: Check for active lock before bailing on spinning

37e9562453b (locking/rwsem: Allow conservative optimistic spinning when readers have lock) forced the default for optimistic spinning to be disabled if the lock owner was nil, which makes much sense for readers. However, while it is not our priority, we can make some optimizations for write-mostly