cls_cgroup: remove task_struct parameter from sock_update_classid()

The callers always pass current to sock_update_classid().

Signed-off-by: Li Zefan <lizefan@huawei.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/sock.c b/net/core/sock.c
index 2ff5f36..0e1d2fe 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1307,11 +1307,11 @@
 }
 
 #if IS_ENABLED(CONFIG_NET_CLS_CGROUP)
-void sock_update_classid(struct sock *sk, struct task_struct *task)
+void sock_update_classid(struct sock *sk)
 {
 	u32 classid;
 
-	classid = task_cls_classid(task);
+	classid = task_cls_classid(current);
 	if (classid != sk->sk_classid)
 		sk->sk_classid = classid;
 }
@@ -1353,7 +1353,7 @@
 		sock_net_set(sk, get_net(net));
 		atomic_set(&sk->sk_wmem_alloc, 1);
 
-		sock_update_classid(sk, current);
+		sock_update_classid(sk);
 		sock_update_netprioidx(sk, current);
 	}