Re: POLLRDONCE optimisation for epoll users (was: epoll and half closed TCP connections)

From: Davide Libenzi (davidel@xmailserver.org)
Date: Sun Jul 13 2003 - 22:02:50 EST


On Mon, 14 Jul 2003, Jamie Lokier wrote:

> Davide Libenzi wrote:
> > Where this will break by using a POLLRDHUP ?
>
> It will break if
>
> (a) fd isn't a socket
> (b) fd isn't a TCP socket
> (c) kernel version <= 2.5.75
> (d) SO_RCVLOWAT < s
> (e) there is urgent data with OOBINLINE (I think)

Jamie, did you smoke that stuff again ? :)
With Eric patch in the proper places it is just fine. You just make
f_op->poll() to report the extra flag other that POLLIN. What's the problem ?

- Davide

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Tue Jul 15 2003 - 22:00:49 EST