linux-kernel - Re: [patch 2/2] fs, proc: Introduce the /proc/<pid>/map

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Date:	Thu, 1 Sep 2011 17:09:58 -0700
From:	Matt Helsley <matthltc@...ibm.com>
To:	Pavel Emelyanov <xemul@...allels.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Cyrill Gorcunov <gorcunov@...il.com>,
	"Kirill A. Shutemov" <kirill@...temov.name>,
	Vasiliy Kulikov <segoon@...nwall.com>,
	"containers@...ts.osdl.org" <containers@...ts.osdl.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	Nathan Lynch <ntl@...ox.com>,
	Oren Laadan <orenl@...columbia.edu>,
	Daniel Lezcano <dlezcano@...ibm.com>,
	Glauber Costa <glommer@...allels.com>,
	James Bottomley <jbottomley@...allels.com>,
	Serge Hallyn <serge@...lyn.com>, Tejun Heo <tj@...nel.org>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Al Viro <viro@...IV.linux.org.uk>
Subject: Re: [patch 2/2] fs, proc: Introduce the /proc/<pid>/map_files/
 directory v6

On Thu, Sep 01, 2011 at 11:58:29AM +0400, Pavel Emelyanov wrote:
> > What additional kernel patches are required to bring that effort to a
> > usable state and where are those patches?
> 
> * The one you've already accepted with ->statfs for pipefs.
> * PTRACE_SEIZE set from Tejun (RFC was sent some time earlier)
> * CLONE_USEPID flag for the clone() syscall (Cyrill will re-send a bit later)

Is that the last CLONE_ flag? Does it fully support nesting of pid namespaces?

What happened to the idea of using the existing eclone patches instead?

Cheers,
	-Matt Helsley
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