From: Al Viro <viro@ftp.linux.org.uk>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
akpm@linux-foundation.org, torvalds@linux-foundation.org
Subject: Re: [RFC PATCH] file as directory
Date: Wed, 23 May 2007 09:29:18 +0100 [thread overview]
Message-ID: <20070523082918.GP4095@ftp.linux.org.uk> (raw)
In-Reply-To: <E1HqlqT-0001KD-00@dorka.pomaz.szeredi.hu>
On Wed, May 23, 2007 at 10:05:21AM +0200, Miklos Szeredi wrote:
> > Er... These mounts might not be propagated, but what about a bind
> > over another instance of such file in master tree?
>
> So your question is, which mount takes priority on the lookup? It
> probably should be the propagated real mount, rather than the
> dir-on-file one, shouldn't it?
There might be dragons in that area...
> > > I think they should be the same superblock, same dentry. What would
> > > be the advantage of doing otherwise?
> >
> > Then you are going to have interesting time with locking in final mntput().
>
> Final mntput of what?
When the last reference to your mount goes away.
> > BTW, what about having several links to the same file? You have i_mutex
> > on the inode, so serialization of those is not a problem, but...
>
> Sorry, I lost it...
Say /foo/bar/a is such a file.
cd /foo/bar
ln a b
now do lookups on a/ and b/
What happens?
next prev parent reply other threads:[~2007-05-23 8:29 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-22 18:48 [RFC PATCH] file as directory Miklos Szeredi
2007-05-22 22:10 ` Al Viro
2007-05-23 6:36 ` Miklos Szeredi
2007-05-23 7:03 ` Al Viro
2007-05-23 7:19 ` Miklos Szeredi
2007-05-23 7:36 ` Al Viro
2007-05-23 8:05 ` Miklos Szeredi
2007-05-23 8:29 ` Al Viro [this message]
2007-05-23 9:03 ` Miklos Szeredi
2007-05-23 9:58 ` Al Viro
2007-05-23 10:14 ` Miklos Szeredi
2007-05-23 9:16 ` Jan Blunck
2007-05-23 9:28 ` Miklos Szeredi
2007-05-23 12:34 ` Trond Myklebust
2007-05-23 12:40 ` Al Viro
2007-05-23 9:21 ` Jan Blunck
2007-05-23 9:35 ` Miklos Szeredi
2007-05-24 12:07 ` Pavel Machek
2007-05-28 14:43 ` Miklos Szeredi
2007-05-22 23:26 ` Shaya Potter
2007-05-23 6:39 ` Miklos Szeredi
2007-05-23 9:51 ` Al Viro
2007-05-23 10:09 ` Miklos Szeredi
2007-05-23 10:24 ` Miklos Szeredi
2007-05-23 10:24 ` Al Viro
2007-05-23 10:40 ` Miklos Szeredi
2007-05-23 11:39 ` Al Viro
2007-05-23 12:16 ` Al Viro
2007-05-23 13:01 ` Miklos Szeredi
2007-05-23 13:51 ` Al Viro
2007-05-23 14:32 ` Miklos Szeredi
2007-05-23 15:06 ` Al Viro
2007-05-23 15:25 ` Miklos Szeredi
2007-05-23 15:37 ` Al Viro
2007-05-23 15:55 ` Miklos Szeredi
2007-05-23 13:23 ` Ph. Marek
2007-05-23 13:54 ` Al Viro
2007-05-23 12:01 ` Jan Engelhardt
2007-05-23 13:20 ` Jaroslav Sykora
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=20070523082918.GP4095@ftp.linux.org.uk \
--to=viro@ftp.linux.org.uk \
--cc=akpm@linux-foundation.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=miklos@szeredi.hu \
--cc=torvalds@linux-foundation.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