workqueue: declare system_highpri_wq
system_highpri_wq is exported to modules via EXPORT_SYMBOL_GPL(), but it was forgotten to be declared in workqueue.h. So we add the declaration and a short description for it. tj: Minor comment tweak. Signed-off-by:Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by:
Tejun Heo <tj@kernel.org>
parent
51697d39
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