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

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Message-ID: <CAOJsxLGVLAV7JF=kJmHU7gzyTe3W94Fx5d6qjikrS=2Yw2=Muw@mail.gmail.com>
Date:	Wed, 24 Aug 2011 12:21:27 +0300
From:	Pekka Enberg <penberg@...nel.org>
To:	Cyrill Gorcunov <gorcunov@...il.com>
Cc:	Nathan Lynch <ntl@...ox.com>, Oren Laadan <orenl@...columbia.edu>,
	Daniel Lezcano <dlezcano@...ibm.com>,
	Tejun Heo <tj@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Glauber Costa <glommer@...allels.com>,
	containers@...ts.osdl.org, linux-kernel@...r.kernel.org,
	Pavel Emelyanov <xemul@...allels.com>,
	Serge Hallyn <serge.hallyn@...onical.com>,
	LINUXFS-ML <linux-fsdevel@...r.kernel.org>,
	James Bottomley <jbottomley@...allels.com>
Subject: Re: [RFC] fs, proc: Introduce the /proc/<pid>/map_files/ directory v2

On Wed, Aug 24, 2011 at 11:53 AM, Cyrill Gorcunov <gorcunov@...il.com> wrote:
> From: Pavel Emelyanov <xemul@...allels.com>
>
> This one behaves similarly to the /proc/<pid>/fd/ one - it contains symlinks
> one for each mapping with file, the name of a symlink is vma->vm_start, the
> target is the file. Opening a symlink results in a file that point exactly
> to the same inode as them vma's one.
>
> This thing is aimed to help checkpointing processes.

OK, but you really should explain _how_ this will help with checkpointing.

                        Pekka
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