Date: Fri, 15 Feb 2008 18:18:15 +0100 (CET)
From: Jan Engelhardt <jengelh@computergmbh.de>
To: Randy Dunlap <randy.dunlap@oracle.com>
cc: Mikael Pettersson <mikpe@it.uu.se>, Andi Kleen <andi@firstfloor.org>,
       Pavel Emelyanov <xemul@openvz.org>,
       Andrew Morton <akpm@linux-foundation.org>,
       Al Viro <viro@zeniv.linux.org.uk>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       Alexey Dobriyan <adobriyan@openvz.org>
Subject: Re: [PATCH] Make sysctl a separate filesystem
In-Reply-To: <20080215083428.07246720.randy.dunlap@oracle.com>
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References: <47B56BF2.4020600@openvz.org> <p73ejbe1ook.fsf@bingen.suse.de>
 <18357.30971.334517.722985@harpo.it.uu.se> <Pine.LNX.4.64.0802151343330.30301@fbirervta.pbzchgretzou.qr>
 <20080215083428.07246720.randy.dunlap@oracle.com>
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On Feb 15 2008 08:34, Randy Dunlap wrote:
>> >
>> >Doing it automatically is the only acceptable way, IMO.
>> 
>> For time being only.
>> 
>> The kernel (currently) only auto-mounts invisible filesystems.
>
>like /root, sysfs, futexfs, pipefs, anon_inodefs, bdev, devpts,
>hugetlbfs, inotifyfs ?

Yes?

/ (double case - initramfs or kernel), sysfs, devpts and
hugetlbfs can be mounted using mount(8) (or mount(2)), so
userspace can - and distro scripts do just that - mount them.

futexfs, pipefs, anon_inodefs, bdev and inotifyfs are 'invisible'
filesystems in that you cannot mount them yourself and that you
do not usually get to see them except probably when readlink(2)ing
on /proc/X/fd/N.
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