# Re: \[PATCH 1/8\] networking/fanotify: declare fanotify socket numbers

- From: Jamie Lokier \<hidden\>
- Date: 2009-09-14 00:18:01 
- List: netdev
- Page: https://ratatoskr.run/netdev/2009/09/35147
- Thread: https://ratatoskr.run/linux-fsdevel/2009/09/35085/t.md

```text
Evgeniy Polyakov wrote:
> On Fri, Sep 11, 2009 at 05:51:42PM -0400, Eric Paris (eparis@redhat.com) wrote:
> > For some things yes, some things no.  I'd have to understand where loss
> > can happen to know if it's feasible.  If I know loss happens in the
> > sender context that's great.  If it's somewhere in the middle and the
> > sender doesn't immediately know it'll never be delivered, yes, I don't
> > think it can solve all my needs.  How many places can and skb get lost
> > between the sender and the receiver?
> 
> When queue is full or you do not have enough RAM. Both are reported at
> 'sending' time.

Can you ->poll() and wait reliably until the queue will accept an skb?
(A few spurious EAGAINs/ENOBUFs is ok, as long as it's not the norm).

-- Jamie
```