From: Oleg Nesterov <oleg-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Andy Lutomirski <luto-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org>
Cc: Aditya Kali <adityakali-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
Containers
<containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>,
Linux FS Devel
<linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"Eric W. Biederman"
<ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
Subject: Re: [REVIEW][PATCH 3/3] vfs: Fix a regression in mounting proc
Date: Wed, 27 Nov 2013 19:10:24 +0100 [thread overview]
Message-ID: <20131127181024.GB29379@redhat.com> (raw)
In-Reply-To: <CALCETrXFnw63=JoEaQxM+Opj+kCXSL=9XppymzGKhLzOnp3WaQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On 11/27, Andy Lutomirski wrote:
>
> On Wed, Nov 27, 2013 at 8:13 AM, Oleg Nesterov <oleg-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> wrote:
> > To all: sorry for noise, I can't comment this patch.
> >
> >
> > But Eric, could you please help me to understand? I am totally confused.
> >
> > So, afaics, initially (even after MS_KERNMOUNT) fs_fully_visible("proc")
> > should return false.
> >
> > After the normal "mout -t proc none /proc/" it becomes true.
> >
> > And it is still true after, say, "mount -t ramfs none /proc/sys" because
> > "ls -ld /proc/sys" shows ->i_nlink == 1.
>
> Grr. mount -t ramfs none /proc/sys should make proc be not "fully visible".
This was one of the reasons for my question ;)
Oleg.
next prev parent reply other threads:[~2013-11-27 18:10 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-15 16:41 Regression wrt mounting /proc in user namespace in 3.13 Daniel P. Berrange
[not found] ` <20131115164123.GN28794-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-11-16 16:48 ` Serge E. Hallyn
[not found] ` <20131116164840.GA4441-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2013-11-17 3:06 ` Serge E. Hallyn
[not found] ` <20131117030653.GA7670-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2013-11-18 3:19 ` Serge E. Hallyn
[not found] ` <20131118031932.GA17621-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2013-11-18 4:52 ` Gao feng
[not found] ` <52899D09.5080202-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
2013-11-18 14:08 ` Serge E. Hallyn
[not found] ` <20131118140830.GA22075-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2013-11-18 18:01 ` Serge E. Hallyn
[not found] ` <20131118180134.GA24156-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2013-11-19 1:51 ` Eric W. Biederman
[not found] ` <87k3g5gnuv.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2013-11-19 3:47 ` Serge E. Hallyn
2013-11-26 18:10 ` Serge E. Hallyn
[not found] ` <20131126181043.GA25492-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2013-11-27 0:14 ` [REVIEW][PATCH 0/3] userns fixes for v3.13-rc1 Eric W. Biederman
[not found] ` <87siui1z1g.fsf_-_-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2013-11-27 0:16 ` [REVIEW][PATCH 1/3] vfs: In d_path don't call d_dname on a mount point Eric W. Biederman
[not found] ` <8738mi1yya.fsf_-_-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2013-11-27 1:58 ` Serge E. Hallyn
2013-11-30 6:15 ` Al Viro
[not found] ` <20131130061525.GY10323-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2013-11-30 17:02 ` Al Viro
[not found] ` <20131130170226.GZ10323-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2013-11-30 21:51 ` Eric W. Biederman
[not found] ` <87a9glh838.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2013-11-30 22:43 ` Al Viro
[not found] ` <20131130224340.GA10323-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2013-12-02 7:29 ` Al Viro
2014-01-17 3:29 ` Eric W. Biederman
[not found] ` <874n53gub7.fsf@xmission.com>
[not found] ` <874n53gub7.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2014-01-17 8:39 ` Al Viro
[not found] ` <20140117083901.GA10323-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2014-02-07 2:21 ` [PATCH 0/4] d_dname cleanups Eric W. Biederman
[not found] ` <87iosrhdc0.fsf_-_-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2014-02-07 2:23 ` [PATCH 1/4] perfmon: Use d_alloc_pseudo like all of the d_dname callers Eric W. Biederman
2014-02-07 2:23 ` [PATCH 2/4] vfs: Simply when d_alloc_dname is called Eric W. Biederman
2014-02-07 2:24 ` [PATCH 3/4] vfs: Move the call of d_op->d_dname from d_path to prepend_path Eric W. Biederman
2014-02-07 2:24 ` [PATCH 4/4] vfs: Call d_dname from dentry_path Eric W. Biederman
2013-12-01 5:09 ` [REVIEW][PATCH 1/3] vfs: In d_path don't call d_dname on a mount point Al Viro
[not found] ` <20131201050930.GB10323-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2013-12-01 6:15 ` [REVIEW][PATCH 1/3] vfs: In d_path don't call d_dname on a mountpoint Tetsuo Handa
2013-12-02 5:43 ` [REVIEW][PATCH 1/3] vfs: In d_path don't call d_dname on a mount point NeilBrown
[not found] ` <20131202164359.4f4f2c94-wvvUuzkyo1EYVZTmpyfIwg@public.gmane.org>
2013-12-02 16:23 ` J.Bruce Fields
2013-11-27 0:16 ` [REVIEW][PATCH 2/3] fork: Allow CLONE_PARENT after setns(CLONE_NEWPID) Eric W. Biederman
[not found] ` <87vbzezojq.fsf_-_-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2013-11-27 1:58 ` Serge E. Hallyn
2013-11-27 0:17 ` [REVIEW][PATCH 3/3] vfs: Fix a regression in mounting proc Eric W. Biederman
[not found] ` <87pppmzoin.fsf_-_-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2013-11-27 0:21 ` Andy Lutomirski
[not found] ` <CALCETrVp78EfzY3Oa-LV1Hm8A4Y35apehcxrxdyrzvTb5sp=pA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-11-27 0:36 ` Eric W. Biederman
2013-11-27 2:00 ` Serge E. Hallyn
2013-11-27 3:19 ` Gao feng
[not found] ` <529564AA.8050100-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
2013-11-27 5:00 ` Eric W. Biederman
2013-11-27 16:13 ` Oleg Nesterov
[not found] ` <20131127161300.GA24773@redhat.com>
[not found] ` <20131127161300.GA24773-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-11-27 16:29 ` Serge E. Hallyn
[not found] ` <20131127162928.GB7358-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2013-11-27 18:09 ` Oleg Nesterov
2013-11-27 16:41 ` Andy Lutomirski
[not found] ` <CALCETrXFnw63=JoEaQxM+Opj+kCXSL=9XppymzGKhLzOnp3WaQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-11-27 18:10 ` Oleg Nesterov [this message]
2013-11-27 18:51 ` Eric W. Biederman
[not found] ` <871u21oeyr.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2013-11-27 19:47 ` Oleg Nesterov
[not found] ` <20131127194722.GA32673@redhat.com>
[not found] ` <20131127194722.GA32673-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-11-27 19:52 ` Eric W. Biederman
[not found] ` <87iovdmxl7.fsf@xmission.com>
[not found] ` <87iovdmxl7.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2013-11-27 20:01 ` Oleg Nesterov
2013-11-27 20:07 ` Eric W. Biederman
[not found] ` <CALCETrUwjK7iLMMJaCvKUbBwEqV58oXY4dWzTGJohYgg4DwjWQ@mail.gmail.com>
[not found] ` <CALCETrUwjK7iLMMJaCvKUbBwEqV58oXY4dWzTGJohYgg4DwjWQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-11-29 14:56 ` Serge E. Hallyn
[not found] ` <87wqjtlic3.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2013-11-27 20:41 ` Andy Lutomirski
2013-11-29 19:53 ` Oleg Nesterov
[not found] ` <20131129195327.GA12974-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-12-13 22:07 ` Richard Weinberger
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20131127181024.GB29379@redhat.com \
--to=oleg-h+wxahxf7alqt0dzr+alfa@public.gmane.org \
--cc=adityakali-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org \
--cc=containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org \
--cc=ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org \
--cc=linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=luto-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox