workqueue: simplify current_is_workqueue_rescuer()

We can test worker->recue_wq instead of reaching into
current_pwq->wq->rescuer and then comparing it to self.

tj: Commit message.

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

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 40f4017..d2ac6cb 100644 (file)
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -3936,7 +3936,7 @@ bool current_is_workqueue_rescuer(void)
 {
        struct worker *worker = current_wq_worker();
 
-       return worker && worker == worker->current_pwq->wq->rescuer;
+       return worker && worker->rescue_wq;
 }
 
 /**