path: root/net/ax25
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authorEric Dumazet <eric.dumazet@gmail.com>2010-11-09 11:46:33 -0800
committerDavid S. Miller <davem@davemloft.net>2010-11-09 12:17:16 -0800
commit332dd96f7ac15e937088fe11f15cfe0210e8edd1 (patch)
tree8efe236b18c0abacee96f9ed5fa6cfd396cdedcf /net/ax25
parent88f8a5e3e7defccd3925cabb1ee4d3994e5cdb52 (diff)
net/dst: dst_dev_event() called after other notifiers
Followup of commit ef885afbf8a37689 (net: use rcu_barrier() in rollback_registered_many) dst_dev_event() scans a garbage dst list that might be feeded by various network notifiers at device dismantle time. Its important to call dst_dev_event() after other notifiers, or we might enter the infamous msleep(250) in netdev_wait_allrefs(), and wait one second before calling again call_netdevice_notifiers(NETDEV_UNREGISTER, dev) to properly remove last device references. Use priority -10 to let dst_dev_notifier be called after other network notifiers (they have the default 0 priority) Reported-by: Ben Greear <greearb@candelatech.com> Reported-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Reported-by: Octavian Purdila <opurdila@ixiacom.com> Reported-by: Benjamin LaHaise <bcrl@kvack.org> Tested-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ax25')
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