linux-kernel - [124/156] llc: use limited socket backlog

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Message-Id: <20100330224841.293482367@linux.site>
Date:	Tue, 30 Mar 2010 15:42:38 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Zhu Yi <yi.zhu@...el.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	"David S. Miller" <davem@...emloft.net>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [124/156] llc: use limited socket backlog

2.6.33-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Zhu Yi <yi.zhu@...el.com>

[ Upstream commit 79545b681961d7001c1f4c3eb9ffb87bed4485db ]

Make llc adapt to the limited socket backlog change.

Cc: Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Signed-off-by: Zhu Yi <yi.zhu@...el.com>
Acked-by: Eric Dumazet <eric.dumazet@...il.com>
Acked-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 net/llc/llc_conn.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/net/llc/llc_conn.c
+++ b/net/llc/llc_conn.c
@@ -756,7 +756,8 @@ void llc_conn_handler(struct llc_sap *sa
 	else {
 		dprintk("%s: adding to backlog...\n", __func__);
 		llc_set_backlog_type(skb, LLC_PACKET);
-		sk_add_backlog(sk, skb);
+		if (sk_add_backlog_limited(sk, skb))
+			goto drop_unlock;
 	}
 out:
 	bh_unlock_sock(sk);


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