linux-kernel - [PATCH] locking/percpu-rwsem: Remove WQ_FLAG

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Date:   Wed, 1 Jul 2020 13:57:20 +0800
From:   <qiang.zhang@...driver.com>
To:     <peterz@...radead.org>, <mingo@...hat.com>, <will@...nel.org>
CC:     <linux-kernel@...r.kernel.org>
Subject: [PATCH] locking/percpu-rwsem: Remove WQ_FLAG_EXCLUSIVE flags

From: Zqiang <qiang.zhang@...driver.com>

Remove WQ_FLAG_EXCLUSIVE from "wq_entry.flags", using function
__add_wait_queue_entry_tail_exclusive substitution.

Signed-off-by: Zqiang <qiang.zhang@...driver.com>
---
 kernel/locking/percpu-rwsem.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/locking/percpu-rwsem.c b/kernel/locking/percpu-rwsem.c
index 8bbafe3e5203..48e1c55c2e59 100644
--- a/kernel/locking/percpu-rwsem.c
+++ b/kernel/locking/percpu-rwsem.c
@@ -148,8 +148,8 @@ static void percpu_rwsem_wait(struct percpu_rw_semaphore *sem, bool reader)
 	 */
 	wait = !__percpu_rwsem_trylock(sem, reader);
 	if (wait) {
-		wq_entry.flags |= WQ_FLAG_EXCLUSIVE | reader * WQ_FLAG_CUSTOM;
-		__add_wait_queue_entry_tail(&sem->waiters, &wq_entry);
+		wq_entry.flags |= reader * WQ_FLAG_CUSTOM;
+		__add_wait_queue_entry_tail_exclusive(&sem->waiters, &wq_entry);
 	}
 	spin_unlock_irq(&sem->waiters.lock);
 
-- 
2.24.1