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Date: Wed, 22 Feb 2017 20:56:03 +0100 From: Alexey Gladkov <gladkov.alexey@...il.com> To: Oleg Nesterov <oleg@...hat.com> Cc: "Dmitry V. Levin" <ldv@...linux.org>, Linux Kernel Mailing List <linux-kernel@...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>, Pavel Emelyanov <xemul@...allels.com> Subject: Re: [PATCH] Add pidfs filesystem On Wed, Feb 22, 2017 at 06:48:03PM +0100, Oleg Nesterov wrote: > 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. I think I can try to use subtype for this. In this case, it is still the same procfs, but with the subtype: mount -t proc.pidfs ... -- Rgrds, legion
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