futexes: Clean up various details
futexes: Clean up various details

- Remove unnecessary head variables.
- Delete unused parameter in queue_unlock().

Reviewed-by: Darren Hart <38f9eaa30910c40b06f5a60020b1222f2a953801@linux.intel.com>
Reviewed-by: Peter Zijlstra <3fddac958924aef220f202ca567388ddab3f14a8@infradead.org>
Reviewed-by: Paul E. McKenney <1e0ce936bb9b355d257bf5790d2513c3f28be22b@linux.vnet.ibm.com>
Reviewed-by: Thomas Gleixner <00e4cf8f46a57000a44449bf9dd8cbbcc209fd2a@linutronix.de>
Signed-off-by: Jason Low <09ebf12aa4fd61769490ade56a7655bcf429b765@hp.com>
Signed-off-by: Davidlohr Bueso <4aa5652442886f3c4e77d3a743dc27e129c1613f@hp.com>
Cc: Mike Galbraith <3cfa3897b7f55b5396b7a47c83b66325184bc9b4@gmx.de>
Cc: Jeff Mahoney <5459ed423adecc5a7fe2249dd619058acc25c497@suse.com>
Cc: Linus Torvalds <69652caca27c8b940640ad396ab71f93cacec34f@linux-foundation.org>
Cc: Scott Norton <49115ac805b6db5f3b6f48b0e88b39699dd1bea1@hp.com>
Cc: Tom Vaden <e163ab94d9c7d18a50ed58d0d51263f420888d6e@hp.com>
Cc: Aswin Chandramouleeswaran <bfa14955daca93db2acc6116543d4fa46c7a22b5@hp.com>
Cc: Waiman Long <a123fdd9fb50e93f03393cfddab9c182b4164439@hp.com>
Cc: Andrew Morton <5c1e68b099950c134891f0b6e179498a8ebe9cf9@linux-foundation.org>
Link: http://lkml.kernel.org/r/1389569486-25487-2-git-send-email-4aa5652442886f3c4e77d3a743dc27e129c1613f@hp.com
Signed-off-by: Ingo Molnar <9dbbbf0688fedc85ad4da37637f1a64b8c718ee2@kernel.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs