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Diffstat (limited to 'net/ipv4/tcp_output.c')
-rw-r--r--net/ipv4/tcp_output.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index c69f4d966024..d1cb1ecf8f21 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -1077,15 +1077,15 @@ static void tcp_tasklet_func(struct tasklet_struct *t)
*/
void tcp_release_cb(struct sock *sk)
{
- unsigned long flags, nflags;
+ unsigned long flags = smp_load_acquire(&sk->sk_tsq_flags);
+ unsigned long nflags;
/* perform an atomic operation only if at least one flag is set */
do {
- flags = sk->sk_tsq_flags;
if (!(flags & TCP_DEFERRED_ALL))
return;
nflags = flags & ~TCP_DEFERRED_ALL;
- } while (cmpxchg(&sk->sk_tsq_flags, flags, nflags) != flags);
+ } while (!try_cmpxchg(&sk->sk_tsq_flags, &flags, nflags));
if (flags & TCPF_TSQ_DEFERRED) {
tcp_tsq_write(sk);