Re: [patch] total-epoll r2 ...

[Davide Libenzi <davidel@xmailserver.org>]

On Sat, 2 Nov 2002, bert hubert wrote:

> On Sat, Nov 02, 2002 at 11:40:55AM -0800, Davide Libenzi wrote:
>
> > http://www.xmailserver.org/linux-patches/epoll.txt
>
> This page still contains:
>
>        Furthermore, the function do_use_fd() immediately tries to read(2)
>        from the fd. If it does not do so, there is a race condition with the
>        risk of losing an event before interest in it was registered.  This
>        read may well return EAGAIN, which should be a cause for calling
>        epoll_wait().
>
> Am I correct in understanding that this is no longer true because epoll_ctl
> inserts an event if the poll condition is met?

Yep, I forgot to edit that one ...



> Furthermore, I don't think the epoll(2) page is that helpful as even an
> application developer that follows lkml (ie, me) has any use of the
> 'waitqueue' analogy.

Sigh, I liked Jamie explanation :)
Ok, there's still some work to do on man pages ...



- Davide