public inbox for linux-kernel@vger.kernel.org
 help / color / mirror / Atom feed
From: Rob Landley <rob@landley.net>
To: linux-kernel@vger.kernel.org,
	user-mode-linux-devel@lists.sourceforge.net
Subject: What's wrong with tmpfs?
Date: Sun, 30 Oct 2005 06:24:38 -0600	[thread overview]
Message-ID: <200510300624.38794.rob@landley.net> (raw)

Under User Mode Linux in 2.6.14, would someone please explain to me why this 
test:

static int graft_tree(struct vfsmount *mnt, struct nameidata *nd)
{
        int err;

        if (mnt->mnt_sb->s_flags & MS_NOUSER)
                return -EINVAL;

Is triggering when I try to mount tmpfs?  Is this happening for anybody else?  
Shouldn't I be getting a fresh superblock or something?  (Is this just a User 
Mode Linux issue?  Haven't got a spare box set up to boot it on real hardware 
just yet...)

If somebody needs a reproduction sequence, I'm happy to oblige.  In theory 
"mount -t tmpfs /mnt /mnt" should do it, but if it was _that_ simple it 
wouldn't have shipped...

Rob

             reply	other threads:[~2005-10-30 12:24 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-10-30 12:24 Rob Landley [this message]
2005-10-30 12:53 ` What's wrong with tmpfs? Jon Masters
2005-10-30 15:15   ` Jeff Dike
2005-10-30 20:24     ` Rob Landley
2005-11-08 17:58     ` Matt Mackall

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=200510300624.38794.rob@landley.net \
    --to=rob@landley.net \
    --cc=linux-kernel@vger.kernel.org \
    --cc=user-mode-linux-devel@lists.sourceforge.net \
    /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