[tip:core/rcu] drivers/vhost: Replace synchronize_rcu_bh() with synchronize_rcu()

["tip-bot for Paul E. McKenney" <tipbot@zytor.com>]

Commit-ID:  d05faa5f1ac50beef77b4ceba0e8e157d41146e2
Gitweb:     https://git.kernel.org/tip/d05faa5f1ac50beef77b4ceba0e8e157d41146e2
Author:     Paul E. McKenney <paulmck@linux.ibm.com>
AuthorDate: Mon, 5 Nov 2018 17:14:53 -0800
Committer:  Paul E. McKenney <paulmck@linux.ibm.com>
CommitDate: Tue, 27 Nov 2018 09:21:37 -0800

drivers/vhost: Replace synchronize_rcu_bh() with synchronize_rcu()

Now that synchronize_rcu() waits for bh-disable regions of code as well
as RCU read-side critical sections, synchronize_rcu_bh() can be replaced
by synchronize_rcu().  This commit therefore makes this change.

Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: <kvm@vger.kernel.org>
Cc: <virtualization@lists.linux-foundation.org>
Cc: <netdev@vger.kernel.org>
---
 drivers/vhost/net.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index ab11b2bee273..564ead864028 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -1359,7 +1359,7 @@ static int vhost_net_release(struct inode *inode, struct file *f)
 	if (rx_sock)
 		sockfd_put(rx_sock);
 	/* Make sure no callbacks are outstanding */
-	synchronize_rcu_bh();
+	synchronize_rcu();
 	/* We do an extra flush before freeing memory,
 	 * since jobs can re-queue themselves. */
 	vhost_net_flush(n);