netdev - [PATCH 2/8 net-2.6.26] [NETNS]: Add netns refcnt debug for kernel sockets.

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Message-Id: <1208263075-28016-2-git-send-email-den@openvz.org>
Date:	Tue, 15 Apr 2008 16:37:49 +0400
From:	"Denis V. Lunev" <den@...nvz.org>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, containers@...ts.osdl.org,
	dlezcano@...ibm.com, "Denis V. Lunev" <den@...nvz.org>
Subject: [PATCH 2/8 net-2.6.26] [NETNS]: Add netns refcnt debug for kernel sockets.

Protocol control sockets and netlink kernel sockets should not prevent the
namespace stop request. They are initialized and disposed in a special way by
sk_change_net/sk_release_kernel.

Signed-off-by: Denis V. Lunev <den@...nvz.org>
---
 include/net/sock.h |    2 +-
 net/core/sock.c    |    1 +
 2 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/include/net/sock.h b/include/net/sock.h
index 09255ea..dc42b44 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1314,7 +1314,7 @@ void sock_net_set(struct sock *sk, struct net *net)
 static inline void sk_change_net(struct sock *sk, struct net *net)
 {
 	put_net(sock_net(sk));
-	sock_net_set(sk, net);
+	sock_net_set(sk, hold_net(net));
 }
 
 extern void sock_enable_timestamp(struct sock *sk);
diff --git a/net/core/sock.c b/net/core/sock.c
index f2ccb16..015ec69 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1001,6 +1001,7 @@ void sk_release_kernel(struct sock *sk)
 
 	sock_hold(sk);
 	sock_release(sk->sk_socket);
+	release_net(sock_net(sk));
 	sock_net_set(sk, get_net(&init_net));
 	sock_put(sk);
 }
-- 
1.5.3.rc5

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