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Date: Wed, 22 Feb 2017 18:48:03 +0100
From: Oleg Nesterov <oleg@redhat.com>
To: "Dmitry V. Levin" <ldv@altlinux.org>
Cc: Alexey Gladkov <gladkov.alexey@gmail.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
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        Al Viro <viro@zeniv.linux.org.uk>,
        "Eric W. Biederman" <ebiederm@xmission.com>,
        Pavel Emelyanov <xemul@parallels.com>
Subject: Re: [PATCH] Add pidfs filesystem
Message-ID: <20170222174803.GB19788@redhat.com>
References: <20170218225307.GA10345@comp-core-i7-2640m-0182e6.fortress> <20170221145746.GA31914@redhat.com> <20170222153718.GA9258@altlinux.org>
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On 02/22, Dmitry V. Levin wrote:
>
> On Tue, Feb 21, 2017 at 03:57:47PM +0100, Oleg Nesterov wrote:
> >
> > But perhaps we can use mnt_flags? For example, lets abuse MNT_NODEV, see
> > the simple patch below. Not sure it is correct/complete, just to illustrate
> > the idea.

...

> I like the idea of using mnt_flags to turn procfs into pidfs, thus
> avoiding yet another filesystem, but MNT_NODEV has a different meaning,

Yes, yes, see "abuse MNT_NODEV" above. The patch just tries to illustrate
the idea.

Oleg.