Pull workqueue updates from Tejun Heo:
"Most of the changes are around implementing and fixing fallouts from
sysfs and internal interface to limit the CPUs available to all
unbound workqueues to help isolating CPUs. It needs more work as
ordered workqueues can roam unrestricted but still is a significant
improvement"
* 'for-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
workqueue: fix typos in comments
workqueue: move flush_scheduled_work() to workqueue.h
workqueue: remove the lock from wq_sysfs_prep_attrs()
workqueue: remove the declaration of copy_workqueue_attrs()
workqueue: ensure attrs changes are properly synchronized
workqueue: separate out and refactor the locking of applying attrs
workqueue: simplify wq_update_unbound_numa()
workqueue: wq_pool_mutex protects the attrs-installation
workqueue: fix a typo
workqueue: function name in the comment differs from the real function name
workqueue: fix trivial typo in Documentation/workqueue.txt
workqueue: Allow modifying low level unbound workqueue cpumask
workqueue: Create low-level unbound workqueues cpumask
workqueue: split apply_workqueue_attrs() into 3 stages
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