diff --git a/include/net/sock.h b/include/net/sock.h
index 1c28f39..8ac338c 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -320,6 +320,9 @@
 	unsigned short		sk_ack_backlog;
 	unsigned short		sk_max_ack_backlog;
 	__u32			sk_priority;
+#ifdef CONFIG_CGROUPS
+	__u32			sk_cgrp_prioidx;
+#endif
 	struct pid		*sk_peer_pid;
 	const struct cred	*sk_peer_cred;
 	long			sk_rcvtimeo;