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net: Modify sk_alloc to not reference count the netns of kernel sockets.

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Now that sk_alloc knows when a kernel socket is being allocated modify
it to not reference count the network namespace of kernel sockets.

Keep track of if a socket needs reference counting by adding a flag to
struct sock called sk_net_refcnt.

Update all of the callers of sock_create_kern to stop using
sk_change_net and sk_release_kernel as those hacks are no longer
needed, to avoid reference counting a kernel socket.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric W. Biederman 2015-05-08 21:10:31 -05:00 • committed by David S. Miller
parent 11aa9c28b4
commit 26abe14379
8 changed files with 30 additions and 45 deletions
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2
include/net/inet_common.h
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@ -41,7 +41,7 @@ int inet_recv_error(struct sock *sk, struct msghdr *msg, int len,
static inline void inet_ctl_sock_destroy(struct sock *sk)
{
sk_release_kernel(sk);
sock_release(sk->sk_socket);
}
#endif