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Commit 9dfbec1f authored by Denis V. Lunev's avatar Denis V. Lunev Committed by David S. Miller
Browse files

[NETLINK]: No need for a separate __netlink_release call. 



Merge it to netlink_kernel_release.

Signed-off-by: default avatarDenis V. Lunev <den@openvz.org>
Acked-by: default avatarDaniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 79c91159

net/netlink/af_netlink.c

+12 −18
Original line number Diff line number Diff line
@@ -1344,22 +1344,6 @@ static void netlink_data_ready(struct sock *sk, int len) 
 *	queueing.

 */



static void __netlink_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.

	 */



	sock_hold(sk);

	sock_release(sk->sk_socket);

	sk->sk_net = get_net(&init_net);

	sock_put(sk);

}



struct sock *

netlink_kernel_create(struct net *net, int unit, unsigned int groups,

		      void (*input)(struct sk_buff *skb),
@@ -1424,7 +1408,7 @@ netlink_kernel_create(struct net *net, int unit, unsigned int groups, 


out_sock_release:

	kfree(listeners);

	__netlink_release(sk);

	netlink_kernel_release(sk);

	return NULL;



out_sock_release_nosk:
@@ -1437,10 +1421,20 @@ 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;



	__netlink_release(sk);

	sock_hold(sk);

	sock_release(sk->sk_socket);

	sk->sk_net = get_net(&init_net);

	sock_put(sk);

}

EXPORT_SYMBOL(netlink_kernel_release);