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From:   Davidlohr Bueso <dave@stgolabs.net>
To:     dave@stgolabs.net
Cc:     bigeasy@linutronix.de, bristot@redhat.com, jack@suse.com,
        juri.lelli@redhat.com, linux-kernel@vger.kernel.org,
        longman@redhat.com, mingo@kernel.org, oleg@redhat.com,
        peterz@infradead.org, tglx@linutronix.de, will@kernel.org,
        williams@redhat.com, Davidlohr Bueso <dbueso@suse.de>
Subject: [PATCH] locking/percpu-rwsem: Add might_sleep() for writer locking
Date:   Tue,  7 Jan 2020 17:33:05 -0800
Message-Id: <20200108013305.7732-2-dave@stgolabs.net>
In-Reply-To: <20200108013305.7732-1-dave@stgolabs.net>
References: <20191115203906.fbo6t7d2n6xk3saw@linux-p48b>
 <20200108013305.7732-1-dave@stgolabs.net>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

We are missing this annotation in percpu_down_write(). Correct
this.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
---

Applies against your queue tree.

 kernel/locking/percpu-rwsem.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/locking/percpu-rwsem.c b/kernel/locking/percpu-rwsem.c
index 4cbeeada8d09..08db2abfa00d 100644
--- a/kernel/locking/percpu-rwsem.c
+++ b/kernel/locking/percpu-rwsem.c
@@ -212,6 +212,7 @@ static bool readers_active_check(struct percpu_rw_semaphore *sem)
 
 void percpu_down_write(struct percpu_rw_semaphore *sem)
 {
+	might_sleep();
 	rwsem_acquire(&sem->dep_map, 0, 0, _RET_IP_);
 
 	/* Notify readers to take the slow path. */
-- 
2.16.4