Tasks stuck in futex code (in 3.14-rc6)

[Davidlohr Bueso]

On Wed, 2014-03-19 at 18:08 +0100, Peter Zijlstra wrote:
> On Wed, Mar 19, 2014 at 04:47:05PM +0100, Peter Zijlstra wrote:
> > > I reverted b0c29f79ecea0b6fbcefc999e70f2843ae8306db on top of v3.14-rc6 and confirmed that
> > > reverting the commit solved the problem.
> > 
> > Joy,.. let me look at that with ppc in mind.

errr... just sat down to check email this morning. CC'ing Paul as for
any subtle barrier issues.