workqueue: remove pwq_lock which is no longer used
authorLai Jiangshan <laijs@cn.fujitsu.com>
Mon, 25 Mar 2013 23:57:19 +0000 (16:57 -0700)
committerTejun Heo <tj@kernel.org>
Mon, 25 Mar 2013 23:57:19 +0000 (16:57 -0700)
commitb5927605478b740d73192f587e458de1632106e8
tree368ce931dea72fadb8436385e423df76fb76d0d0
parenta357fc03262988f2aa6c4a668b89be22b11ff1e7
workqueue: remove pwq_lock which is no longer used

To simplify locking, the previous patches expanded wq->mutex to
protect all fields of each workqueue instance including the pwqs list
leaving pwq_lock without any user.  Remove the unused pwq_lock.

tj: Rebased on top of the current dev branch.  Updated description.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
kernel/workqueue.c