From 9e067597ee0e51a07bc158e9e2703ca676920e8b Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Tue, 10 Nov 2009 07:54:48 +0000 Subject: [PATCH] vlan: eliminate use of dev_base_lock Do not need to use read_lock(&dev_base_lock), use RCU instead. Signed-off-by: Stephen Hemminger Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- net/8021q/vlanproc.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/net/8021q/vlanproc.c b/net/8021q/vlanproc.c index 6262c335f3c2..9ec1f057c03a 100644 --- a/net/8021q/vlanproc.c +++ b/net/8021q/vlanproc.c @@ -201,18 +201,17 @@ int vlan_proc_rem_dev(struct net_device *vlandev) /* start read of /proc/net/vlan/config */ static void *vlan_seq_start(struct seq_file *seq, loff_t *pos) - __acquires(dev_base_lock) + __acquires(rcu) { struct net_device *dev; struct net *net = seq_file_net(seq); loff_t i = 1; - read_lock(&dev_base_lock); - + rcu_read_lock(); if (*pos == 0) return SEQ_START_TOKEN; - for_each_netdev(net, dev) { + for_each_netdev_rcu(net, dev) { if (!is_vlan_dev(dev)) continue; @@ -234,7 +233,7 @@ static void *vlan_seq_next(struct seq_file *seq, void *v, loff_t *pos) if (v == SEQ_START_TOKEN) dev = net_device_entry(&net->dev_base_head); - for_each_netdev_continue(net, dev) { + for_each_netdev_continue_rcu(net, dev) { if (!is_vlan_dev(dev)) continue; @@ -245,9 +244,9 @@ static void *vlan_seq_next(struct seq_file *seq, void *v, loff_t *pos) } static void vlan_seq_stop(struct seq_file *seq, void *v) - __releases(dev_base_lock) + __releases(rcu) { - read_unlock(&dev_base_lock); + rcu_read_unlock(); } static int vlan_seq_show(struct seq_file *seq, void *v) -- 2.20.1