On Mon, Jul 27, 2015 at 11:19 AM, Sowmini Varadhan
<sowmini.varad...@oracle.com> wrote:
> On (07/27/15 11:13), Cong Wang wrote:
>>
>> That refcnt should be released in sock destructor too, when the tcp
>> connection is terminated.
>
> yes, but in my case, the listen socket is opened as part of
> the ->init indirection in pernet_operations (thus it is a kernel socket)
> and the expectation is that this listen socket, and any accept sockets
> derived from it, will be closed in ->exit.
>
> But if the accept socket is treated as a uspace socket (thus holds a 
> get_net())
> then it will block cleanup_net() and the associated ->exit cleanup operations.
>
> This is probably not a problem for other systems like vxlan/gue/geneve etc
> because they all use udp sockets, thus dont have the "accept" equivalent.
>

dlm uses a kernel TCP socket too, but it allocates a new socket and calls
->accept() by itself. ;)
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