From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Subject: Re: [RFC][PATCH 0/7 + tools] Checkpoint/restore mostly in the
	userspace
Date: Sat, 23 Jul 2011 06:58:42 +0200
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To: Matt Helsley <matthltc-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
Cc: Pavel Emelyanov <xemul-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>, Glauber Costa <glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>, Cyrill Gorcunov <gorcunov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Nathan Lynch <ntl-e+AXbWqSrlAAvxtiuMwx3w@public.gmane.org>, Linux Containers <containers-qjLDD68F18O7TbgM5vRIOg@public.gmane.org>, Serge Hallyn <serue-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>, Daniel Lezcano <dlezcano-NmTC/0ZBporQT0dZR+AlfA@public.gmane.org>
List-Id: containers.vger.kernel.org

On Fri, Jul 22, 2011 at 08:29:45PM -0700, Matt Helsley wrote:
> On Fri, Jul 22, 2011 at 05:25:58PM -0700, Matt Helsley wrote:
> You'd have to output the fd number for each epoll item plus the path to
> the file. The fd,file pair in the item is not strictly tied to
> the contents of the processes' fd table yet the item fd has to be output
> since it's the number userspace will supply to epoll_ctl(EPOLL_CTL_DEL...).

I haven't really looked at it but if @fd is key, @fd should be enough.
You can determine what @fd is and it attributes from /proc/PID/fd/ and
/proc/PID/fdinfo/.  No reason to list them again.

-- 
tejun