tcp_memcontrol: remove a redundant statement in tcp_destroy_cgroup()

We read the value but make no use of it.

Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/tcp_memcontrol.c b/net/ipv4/tcp_memcontrol.c
index b6f3583ddfe83eae73370c9070c567e452518f57..d52196f56862a779dbd7d8c13b8450239488be80 100644 (file)
--- a/net/ipv4/tcp_memcontrol.c
+++ b/net/ipv4/tcp_memcontrol.c
@@ -72,8 +72,6 @@ void tcp_destroy_cgroup(struct mem_cgroup *memcg)
 
        tcp = tcp_from_cgproto(cg_proto);
        percpu_counter_destroy(&tcp->tcp_sockets_allocated);
-
-       val = res_counter_read_u64(&tcp->tcp_memory_allocated, RES_LIMIT);
 }
 EXPORT_SYMBOL(tcp_destroy_cgroup);