Re: connector.c

[Andrew Morton <akpm@osdl.org>]

Evgeniy Polyakov <johnpol@2ka.mipt.ru> wrote:
>
> On Thu, 2005-03-31 at 23:42 -0800, Andrew Morton wrote:
>  > Evgeniy Polyakov <johnpol@2ka.mipt.ru> wrote:
>  > >
>  > > > What happens if we expect a reply to our message but userspace never sends
>  > > > one?  Does the kernel leak memory?  Do other processes hang?
>  > > 
>  > > It is only advice, one may easily skip seq/ack initialization.
>  > > I could remove it totally from the header, but decided to 
>  > > place it to force people to use more reliable protocols over netlink
>  > > by introducing such overhead.
>  > 
>  > hm.  I don't know what that means.
> 
>  Messages that are passed between agents must have only id,
>  but I decided to force people to use provided seq/ack fields
>  to store there some information about message order.
>  Neither kernel nor userspace requires that fields to be 
>  somehow initialized.

Back to my original question.  If the kernel expects a reply from userspace
to a particular message, and that reply never comes, what happens?