Evgeniy Polyakov <[email protected]> wrote:
>
> On Thu, 2005-03-31 at 23:42 -0800, Andrew Morton wrote:
> > Evgeniy Polyakov <[email protected]> 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?
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