linux-kernel - [RFC PATCH 2/2] workqueue: Simplify current_is_workqueue

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Message-Id: <20230729135334.566138-3-atomlin@atomlin.com>
Date:   Sat, 29 Jul 2023 14:53:34 +0100
From:   Aaron Tomlin <atomlin@...mlin.com>
To:     linux-kernel@...r.kernel.org
Cc:     tj@...nel.org, jiangshanlai@...il.com, peterz@...radead.org
Subject: [RFC PATCH 2/2] workqueue: Simplify current_is_workqueue_rescuer()

No functional change.

This patch simplifies current_is_workqueue_rescuer()
due to the addition of PF_WQ_RESCUE_WORKER.

Signed-off-by: Aaron Tomlin <atomlin@...mlin.com>
---
 kernel/workqueue.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 6d38d714b72b..3b7a4d60cb6a 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -4890,9 +4890,9 @@ EXPORT_SYMBOL(current_work);
  */
 bool current_is_workqueue_rescuer(void)
 {
-	struct worker *worker = current_wq_worker();
-
-	return worker && worker->rescue_wq;
+	if (in_task() && (current->flags & PF_WQ_RESCUE_WORKER))
+		return true;
+	return false;
 }
 
 /**
-- 
2.39.1