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authorEric Dumazet <edumazet@google.com>2019-10-23 22:44:50 -0700
committerDavid S. Miller <davem@davemloft.net>2019-10-28 13:33:41 -0700
commit3ef7cf57c72f32f61e97f8fa401bc39ea1f1a5d4 (patch)
tree7f962942a142ed611e6c063171ef0092f8af8fd8 /net/ipv4/tcp.c
parentudp: use skb_queue_empty_lockless() (diff)
downloadlinux-dev-3ef7cf57c72f32f61e97f8fa401bc39ea1f1a5d4.tar.xz
linux-dev-3ef7cf57c72f32f61e97f8fa401bc39ea1f1a5d4.zip
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>
Diffstat (limited to 'net/ipv4/tcp.c')
-rw-r--r--net/ipv4/tcp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 42187a3b82f4..ffef502f5292 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -584,7 +584,7 @@ __poll_t tcp_poll(struct file *file, struct socket *sock, poll_table *wait)
}
/* This barrier is coupled with smp_wmb() in tcp_reset() */
smp_rmb();
- if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue))
+ if (sk->sk_err || !skb_queue_empty_lockless(&sk->sk_error_queue))
mask |= EPOLLERR;
return mask;