linux-kernel - Re: [RFC] Add option to mount only a pids subset

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Message-ID: <20170311000555.GE4554@comp-core-i7-2640m-0182e6>
Date:   Sat, 11 Mar 2017 01:05:55 +0100
From:   Alexey Gladkov <gladkov.alexey@...il.com>
To:     Andy Lutomirski <luto@...capital.net>
Cc:     Djalal Harouni <tixxdz@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux API <linux-api@...r.kernel.org>,
        "Kirill A. Shutemov" <kirill@...temov.name>,
        Vasiliy Kulikov <segoon@...nwall.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Oleg Nesterov <oleg@...hat.com>,
        Pavel Emelyanov <xemul@...allels.com>,
        James Bottomley <James.Bottomley@...senpartnership.com>,
        "Dmitry V. Levin" <ldv@...linux.org>
Subject: Re: [RFC] Add option to mount only a pids subset

On Tue, Mar 07, 2017 at 08:24:12AM -0800, Andy Lutomirski wrote:
> On Mon, Mar 6, 2017 at 3:05 PM, Alexey Gladkov <gladkov.alexey@...il.com> wrote:
> >
> > After discussion with Oleg Nesterov I reimplement my patch as an additional
> > option for /proc. This option affects the mountpoint. It means that in one
> > pid namespace it possible to have both the whole traditional /proc and
> > /proc with only pids subset.
> >
> 
> I like this.  I think you should split it into two patches, though:
> one that reworks how procfs gets mounted and one that makes adds the
> new functionality.

Sure, but first I wanted to discuss the idea. My patch isn't very useful
without the ability to add additional files.

I will split it into parts in the new version.

-- 
Rgrds, legion