Messages in this thread | | | Subject | Re: [PATCH v5 01/45] percpu_rwlock: Introduce the global reader-writer lock backend | From | Steven Rostedt <> | Date | Tue, 22 Jan 2013 15:54:21 -0500 |
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On Wed, 2013-01-23 at 01:28 +0530, Srivatsa S. Bhat wrote:
> > I thought global locks are now fair. That is, a reader will block if a > > writer is waiting. Hence, the above should deadlock on the current > > rwlock_t types. > > > > Oh is it? Last I checked, lockdep didn't complain about this ABBA scenario!
It doesn't and Peter Zijlstra said we need to fix that ;-) It only recently became an issue with the new "fair" locking of rwlocks.
-- Steve
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