[PATCH 4.4 32/87] locking/mutex: Allow next waiter lockless wakeup

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Davidlohr Bueso commit 1329ce6fbbe4536592dfcfc8d64d61bfeb598fe6 upstream. Make use of wake-queues and enable the wakeup to occur after releasing the wait_lock. This is

[PATCH 4.4 32/87] locking/mutex: Allow next waiter lockless wakeup

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Davidlohr Bueso commit 1329ce6fbbe4536592dfcfc8d64d61bfeb598fe6 upstream. Make use of wake-queues and enable the wakeup to occur after releasing the wait_lock. This is similar to what we do