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[NET]: Make netlink_kernel_release publically available as sk_release_kernel.

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This staff will be needed for non-netlink kernel sockets, which should
also not pin a namespace like tcp_socket and icmp_socket.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Denis V. Lunev
2008-02-29 11:18:32 -08:00
committed by David S. Miller
parent 9dfbec1fb2
commit edf0208702
3 changed files with 33 additions and 16 deletions
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18
net/netlink/af_netlink.c
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@@ -1372,8 +1372,7 @@ netlink_kernel_create(struct net *net, int unit, unsigned int groups,
goto out_sock_release_nosk;
sk = sock->sk;
put_net(sk->sk_net);
sk->sk_net = net;
sk_change_net(sk, net);
if (groups < 32)
groups = 32;
@@ -1421,20 +1420,7 @@ EXPORT_SYMBOL(netlink_kernel_create);
void
netlink_kernel_release(struct sock *sk)
{
/*
* Last sock_put should drop referrence to sk->sk_net. It has already
* been dropped in netlink_kernel_create. Taking referrence to stopping
* namespace is not an option.
* Take referrence to a socket to remove it from netlink lookup table
* _alive_ and after that destroy it in the context of init_net.
*/
if (sk == NULL || sk->sk_socket == NULL)
return;
sock_hold(sk);
sock_release(sk->sk_socket);
sk->sk_net = get_net(&init_net);
sock_put(sk);
sk_release_kernel(sk);
}
EXPORT_SYMBOL(netlink_kernel_release);