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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 /drivers/nvme
parent3ef7cf57c72f32f61e97f8fa401bc39ea1f1a5d4 (diff)
downloadlinux-3f926af3f4d688e2e11e7f8ed04e277a14d4d4a4.tar.bz2
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 'drivers/nvme')
-rw-r--r--drivers/nvme/host/tcp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c
index 770dbcbc999e..7544be84ab35 100644
--- a/drivers/nvme/host/tcp.c
+++ b/drivers/nvme/host/tcp.c
@@ -2219,7 +2219,7 @@ static int nvme_tcp_poll(struct blk_mq_hw_ctx *hctx)
struct nvme_tcp_queue *queue = hctx->driver_data;
struct sock *sk = queue->sock->sk;
- if (sk_can_busy_loop(sk) && skb_queue_empty(&sk->sk_receive_queue))
+ if (sk_can_busy_loop(sk) && skb_queue_empty_lockless(&sk->sk_receive_queue))
sk_busy_loop(sk, true);
nvme_tcp_try_recv(queue);
return queue->nr_cqe;