diff options
| author | Cong Wang <xiyou.wangcong@gmail.com> | 2018-04-02 11:01:27 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-04-04 11:13:40 -0400 |
| commit | 3848ec5dc82ce648a84ed10021ce2562fdac7c6a (patch) | |
| tree | 9d59bf7a0f5607bcc1d7172663ef69c46823e53f /net/unix | |
| parent | 51508179ecc6dda46c90c7d2de4971112eb57306 (diff) | |
| download | lwn-3848ec5dc82ce648a84ed10021ce2562fdac7c6a.tar.gz lwn-3848ec5dc82ce648a84ed10021ce2562fdac7c6a.zip | |
af_unix: remove redundant lockdep class
After commit 581319c58600 ("net/socket: use per af lockdep classes for sk queues")
sock queue locks now have per-af lockdep classes, including unix socket.
It is no longer necessary to workaround it.
I noticed this while looking at a syzbot deadlock report, this patch
itself doesn't fix it (this is why I don't add Reported-by).
Fixes: 581319c58600 ("net/socket: use per af lockdep classes for sk queues")
Cc: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/unix')
| -rw-r--r-- | net/unix/af_unix.c | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index aded82da1aea..68bb70a62afe 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -745,14 +745,6 @@ static struct proto unix_proto = { .obj_size = sizeof(struct unix_sock), }; -/* - * AF_UNIX sockets do not interact with hardware, hence they - * dont trigger interrupts - so it's safe for them to have - * bh-unsafe locking for their sk_receive_queue.lock. Split off - * this special lock-class by reinitializing the spinlock key: - */ -static struct lock_class_key af_unix_sk_receive_queue_lock_key; - static struct sock *unix_create1(struct net *net, struct socket *sock, int kern) { struct sock *sk = NULL; @@ -767,8 +759,6 @@ static struct sock *unix_create1(struct net *net, struct socket *sock, int kern) goto out; sock_init_data(sock, sk); - lockdep_set_class(&sk->sk_receive_queue.lock, - &af_unix_sk_receive_queue_lock_key); sk->sk_allocation = GFP_KERNEL_ACCOUNT; sk->sk_write_space = unix_write_space; |