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Date: Mon, 08 Jun 2009 15:11:28 +0200 From: Jesper Dangaard Brouer <hawk@...x.dk> To: "David S. Miller" <davem@...emloft.net> Cc: Jesper Dangaard Brouer <hawk@...x.dk>, "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, urs.thuermann@...kswagen.de, oliver.hartkopp@...kswagen.de, wg@...ndegger.com, vladislav.yasevich@...com, sri@...ibm.com, linux-sctp@...r.kernel.org, Trond.Myklebust@...app.com, linux-nfs@...r.kernel.org, netfilter-devel@...r.kernel.org Subject: [PATCH 1/5] 8021q: Vlan driver should use rcu_barrier() on unload instead of syncronize_net() The VLAN 8021q driver needs to call rcu_barrier() when unloading the module, instead of syncronize_net(). This is needed to make sure that outstanding call_rcu() callbacks have completed, before the callback function code is removed on module unload. Signed-off-by: Jesper Dangaard Brouer <hawk@...x.dk> --- net/8021q/vlan.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c index 714e1c3..fe64908 100644 --- a/net/8021q/vlan.c +++ b/net/8021q/vlan.c @@ -758,7 +758,7 @@ static void __exit vlan_cleanup_module(void) BUG_ON(!hlist_empty(&vlan_group_hash[i])); unregister_pernet_gen_device(vlan_net_id, &vlan_net_ops); - synchronize_net(); + rcu_barrier(); /* Wait for completion of call_rcu()'s */ vlan_gvrp_uninit(); } -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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