net/socket: use per af lockdep classes for sk queues
Currently the sock queue's spin locks get their lockdep classes by the default init_spin_lock() initializer: all socket families get - usually, see below - a single class for rx, another specific class for tx, etc. This can lead to false positive lockdep splat, as reported by Andrey. Moreover there are two separate initialization points for the sock queues, one in sk_clone_lock() and one in sock_init_data(), so that e.g. the rx queue lock can get one of two possible, different classes, depending on the socket being cloned or not. This change tries to address the above, setting explicitly a per address family lockdep class for each queue's spinlock. Also, move the duplicated initialization code to a single location. v1 -> v2: - renamed the init helper rfc -> v1: - no changes, tested with several different workload Suggested-by:Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by:
Paolo Abeni <pabeni@redhat.com> Acked-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
parent
65e0ace2
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