[GENL]: Add genlmsg_new() to allocate generic netlink messages

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/kernel/taskstats.c b/kernel/taskstats.c
index 4f3f0e4..faa5239 100644
--- a/kernel/taskstats.c
+++ b/kernel/taskstats.c
@@ -77,7 +77,7 @@
 	/*
 	 * If new attributes are added, please revisit this allocation
 	 */
-	skb = nlmsg_new(genlmsg_total_size(size), GFP_KERNEL);
+	skb = genlmsg_new(size, GFP_KERNEL);
 	if (!skb)
 		return -ENOMEM;