commit 3ef7cf57c72f32f61e97f8fa401bc39ea1f1a5d4
author Eric Dumazet <edumazet@google.com> Wed Oct 23 22:44:50 2019 -0700
committer David S. Miller <davem@davemloft.net> Mon Oct 28 13:33:41 2019 -0700
tree 7f962942a142ed611e6c063171ef0092f8af8fd8
parent 137a0dbe3426fd7bcfe3f8117b36a87b3590e4eb

net: use skb_queue_empty_lockless() in poll() handlers

Many poll() handlers are lockless. Using skb_queue_empty_lockless()
instead of skb_queue_empty() is more appropriate.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/tipc/socket.c

diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index f8bbc4a..4b92b19 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -740,7 +740,7 @@ static __poll_t tipc_poll(struct file *file, struct socket *sock,
 		/* fall through */
 	case TIPC_LISTEN:
 	case TIPC_CONNECTING:
-		if (!skb_queue_empty(&sk->sk_receive_queue))
+		if (!skb_queue_empty_lockless(&sk->sk_receive_queue))
 			revents |= EPOLLIN | EPOLLRDNORM;
 		break;
 	case TIPC_OPEN:
@@ -748,7 +748,7 @@ static __poll_t tipc_poll(struct file *file, struct socket *sock,
 			revents |= EPOLLOUT;
 		if (!tipc_sk_type_connectionless(sk))
 			break;
-		if (skb_queue_empty(&sk->sk_receive_queue))
+		if (skb_queue_empty_lockless(&sk->sk_receive_queue))
 			break;
 		revents |= EPOLLIN | EPOLLRDNORM;
 		break;