linux-kernel - [ 64/75] bonding: fire NETDEV_RELEASE event only on 0 slaves

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Date:	Mon, 18 Mar 2013 14:07:27 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Veaceslav Falico <vfalico@...hat.com>,
	Neil Horman <nhorman@...driver.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: [ 64/75] bonding: fire NETDEV_RELEASE event only on 0 slaves

3.8-stable review patch.  If anyone has any objections, please let me know.

------------------


From: Veaceslav Falico <vfalico@...hat.com>

[ Upstream commit 80028ea1c0afc24d4ddeb8dd2a9992fff03616ca ]

Currently, if we set up netconsole over bonding and release a slave,
netconsole will stop logging on the whole bonding device. Change the
behavior to stop the netconsole only when the last slave is released.

Signed-off-by: Veaceslav Falico <vfalico@...hat.com>
Acked-by: Neil Horman <nhorman@...driver.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/bonding/bond_main.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1943,7 +1943,6 @@ int bond_release(struct net_device *bond
 	}
 
 	block_netpoll_tx();
-	call_netdevice_notifiers(NETDEV_RELEASE, bond_dev);
 	write_lock_bh(&bond->lock);
 
 	slave = bond_get_slave_by_dev(bond, slave_dev);
@@ -2047,8 +2046,10 @@ int bond_release(struct net_device *bond
 	write_unlock_bh(&bond->lock);
 	unblock_netpoll_tx();
 
-	if (bond->slave_cnt == 0)
+	if (bond->slave_cnt == 0) {
 		call_netdevice_notifiers(NETDEV_CHANGEADDR, bond->dev);
+		call_netdevice_notifiers(NETDEV_RELEASE, bond->dev);
+	}
 
 	bond_compute_features(bond);
 	if (!(bond_dev->features & NETIF_F_VLAN_CHALLENGED) &&


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