[NET]: "wrong timeout value in sk_wait_data()": cleanups

- save 4 bytes

- it's read-mostly.
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Acked-by: NVasily Averin <vvs@sw.ru>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/core/sock.c

@@ -210,7 +210,8 @@ static int sock_set_timeout(long *timeo_p, char __user *optval, int optlen)
 		return -EDOM;
 
 	if (tv.tv_sec < 0) {
-		static int warned = 0;
+		static int warned __read_mostly;
+
 		*timeo_p = 0;
 		if (warned < 10 && net_ratelimit())
 			warned++;