From: Timur Celik <mail@timurcelik.de>
Date: Mon, 25 Feb 2019 20:13:13 +0000 (+0100)
Subject: tun: remove unnecessary memory barrier
X-Git-Tag: v4.20.15~29
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=06e391edd5d03b4598d9c08ffcf0e5a4ddde9a49;p=thirdparty%2Fkernel%2Fstable.git

tun: remove unnecessary memory barrier

[ Upstream commit ecef67cb10db7b83b3b71c61dbb29aa070ab0112 ]

Replace set_current_state with __set_current_state since no memory
barrier is needed at this point.

Signed-off-by: Timur Celik <mail@timurcelik.de>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 05728e583d90c..efc08dad3a1bf 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -2165,7 +2165,7 @@ static void *tun_ring_recv(struct tun_file *tfile, int noblock, int *err)
 		schedule();
 	}
 
-	set_current_state(TASK_RUNNING);
+	__set_current_state(TASK_RUNNING);
 	remove_wait_queue(&tfile->wq.wait, &wait);
 
 out: