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authorEric Dumazet <edumazet@google.com>2019-10-23 22:44:51 -0700
committerDavid S. Miller <davem@davemloft.net>2019-10-28 13:33:41 -0700
commit3f926af3f4d688e2e11e7f8ed04e277a14d4d4a4 (patch)
tree3cdc7bbab6fc9caa1282afe98eddd91add1aabd7 /net/sctp/socket.c
parentnet: use skb_queue_empty_lockless() in poll() handlers (diff)
downloadlinux-dev-3f926af3f4d688e2e11e7f8ed04e277a14d4d4a4.tar.xz
linux-dev-3f926af3f4d688e2e11e7f8ed04e277a14d4d4a4.zip
net: use skb_queue_empty_lockless() in busy poll contexts
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>
Diffstat (limited to '')
-rw-r--r--net/sctp/socket.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index cfb25391b8b0..ca81e06df165 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -8871,7 +8871,7 @@ 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;
}