diff options
| author | Eric Dumazet <edumazet@google.com> | 2019-10-24 08:44:51 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-10 13:27:49 +0300 |
| commit | 4f3df7f1eaa70903c2c0c73c0999e120fe452a2a (patch) | |
| tree | 3c20c466e259af2fc6972a7d4a3e3c8f43b2e39f /net/sctp | |
| parent | eaf548feaa17308317bdac2903c1be820e5c186a (diff) | |
| download | linux-4f3df7f1eaa70903c2c0c73c0999e120fe452a2a.tar.xz | |
net: use skb_queue_empty_lockless() in busy poll contexts
[ Upstream commit 3f926af3f4d688e2e11e7f8ed04e277a14d4d4a4 ]
Busy polling usually runs without locks.
Let's use skb_queue_empty_lockless() instead of skb_queue_empty()
Also uses READ_ONCE() in __skb_try_recv_datagram() to address
a similar potential problem.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/sctp')
| -rw-r--r-- | net/sctp/socket.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index d922c78b6c29..c76631552722 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -8334,7 +8334,7 @@ struct sk_buff *sctp_skb_recv_datagram(struct sock *sk, int flags, if (sk_can_busy_loop(sk)) { sk_busy_loop(sk, noblock); - if (!skb_queue_empty(&sk->sk_receive_queue)) + if (!skb_queue_empty_lockless(&sk->sk_receive_queue)) continue; } |