[PATCH] rate limiting for socket allocation failure messages

[Akinobu Mita <mita@miraclelinux.com>]

(Resending due to local mail server trouble)

This patch limits the warning messages when socket allocation
failures happen. It happens under memory pressure.

Cc: David Miller <davem@davemloft.net>
Signed-off-by: Akinobu Mita <mita@miraclelinux.com>

 net/socket.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Index: work-shouldfail/net/socket.c
===================================================================
--- work-shouldfail.orig/net/socket.c
+++ work-shouldfail/net/socket.c
@@ -1178,7 +1178,8 @@ static int __sock_create(int family, int
  */
 
 	if (!(sock = sock_alloc())) {
-		printk(KERN_WARNING "socket: no more sockets\n");
+		if (net_ratelimit())
+			printk(KERN_WARNING "socket: no more sockets\n");
 		err = -ENFILE;		/* Not exactly a match, but its the
 					   closest posix thing */
 		goto out;