workqueue: use manager lock only to protect worker_idr
worker_idr is highly bound to managers and is always/only accessed in manager lock context. So we don't need pool->lock for it. Signed-off-by:Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by:
Tejun Heo <tj@kernel.org>
parent
cf416171
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