1 files changed, 1 insertions, 8 deletions

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 3f56b6e6c6aa..85a67c9d5982 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1268,18 +1268,11 @@ skip_hashing:
 
 void rt_bind_peer(struct rtable *rt, int create)
 {
-        static DEFINE_SPINLOCK(rt_peer_lock);
         struct inet_peer *peer;
 
         peer = inet_getpeer(rt->rt_dst, create);
 
-        spin_lock_bh(&rt_peer_lock);
-        if (rt->peer == NULL) {
-                rt->peer = peer;
-                peer = NULL;
-        }
-        spin_unlock_bh(&rt_peer_lock);
-        if (peer)
+        if (peer && cmpxchg(&rt->peer, NULL, peer) != NULL)
                 inet_putpeer(peer);
 }