Linux 4.4.280

I'm announcing the release of the 4.4.280 kernel.

All users of the 4.4 kernel series must upgrade.

The updated 4.4.y git tree can be found at:
	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-4.4.y
and can be browsed at the normal kernel.org git web browser:
	https://git.kernel.org/?p=linux/kernel/git/stable/linux-s...

thanks,

greg k-h

------------

 Makefile                        |    2 
 include/linux/rcupdate.h        |    4 
 kernel/futex.c                  |  245 ++++++++++++++++++++++++++--------------
 kernel/locking/rtmutex.c        |  185 ++++++++++++++++--------------
 kernel/locking/rtmutex_common.h |    2 
 5 files changed, 263 insertions(+), 175 deletions(-)

Anna-Maria Gleixner (1):
      rcu: Update documentation of rcu_read_unlock()

Greg Kroah-Hartman (1):
      Linux 4.4.280

Mike Galbraith (1):
      futex: Handle transient "ownerless" rtmutex state correctly

Peter Zijlstra (6):
      futex: Cleanup refcounting
      futex,rt_mutex: Introduce rt_mutex_init_waiter()
      futex: Pull rt_mutex_futex_unlock() out from under hb->lock
      futex: Rework futex_lock_pi() to use rt_mutex_*_proxy_lock()
      futex: Futex_unlock_pi() determinism
      futex,rt_mutex: Fix rt_mutex_cleanup_proxy_lock()

Thomas Gleixner (3):
      futex: Rename free_pi_state() to put_pi_state()
      rtmutex: Make wait_lock irq safe
      futex: Avoid freeing an active timer