40e0242e659474a4d9f501d9213225aa55 parent 68d8287ce1e1da3c99881385a93e74f68c454fc2 author Eric Dumazet 1256886687 +0000 committer David S. Miller 1257148508 -0800 net: Introduce dev_get_by_name_rcu() Some workloads hit dev_base_lock rwlock pretty hard. We can use RCU lookups to avoid touching this rwlock (and avoid touching netdevice refcount) netdevices are already freed after a RCU grace period, so this patch adds no penalty at device dismantle time. However, it adds a synchronize_rcu() call in dev_change_name() Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller ;gçä—&x