From: Jamie Lokier <jamie@shareable.org>
To: Linus Torvalds <torvalds@osdl.org>
Cc: viro@parcelfarce.linux.theplanet.co.uk,
David Woodhouse <dwmw2@infradead.org>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Andrew Morton <akpm@osdl.org>, Carsten Otte <cotte@de.ibm.com>,
Carsten Otte <cotte@freenet.de>,
linux-fsdevel@vger.kernel.org, sct@redhat.com,
Dave Kleikamp <shaggy@austin.ibm.com>
Subject: Re: [PATCH] ext3 [linux-2.6.2.]: accessing already freed inodes when under memory pressure
Date: Fri, 2 Apr 2004 20:17:52 +0100 [thread overview]
Message-ID: <20040402191752.GB653@mail.shareable.org> (raw)
In-Reply-To: <Pine.LNX.4.58.0404021050220.1122@ppc970.osdl.org>
Linus Torvalds wrote:
> I think that -EXDEV is not only OK, it's _required_. It may be the same
> physical filesystem, but it's a different mount and thus a different
> filesystem.
That reminds me. How is userspace supposed to determine when two
names are equivalent on different bind-mounted filesystems? stat()
returns the same value in st_dev for both names.
The usual strategy for detecting equivalent files is to check
st_nlink, and if that's not 1 compare (st_dev, st_ino). It doesn't
work for bind mounts, which is a very non-POSIX property.
I think the useful thing to do is return a different st_dev value for
each bind mount.
-- Jamie
next prev parent reply other threads:[~2004-04-02 19:18 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-30 11:57 [PATCH] ext3 [linux-2.6.2.]: accessing already freed inodes when under memory pressure Martin Schwidefsky
2004-03-30 13:39 ` David Woodhouse
2004-03-30 14:16 ` Matthew Wilcox
2004-03-30 15:51 ` Linus Torvalds
2004-04-02 16:12 ` viro
2004-04-02 18:01 ` viro
2004-04-02 18:52 ` Linus Torvalds
2004-04-02 19:02 ` Linus Torvalds
2004-04-02 19:10 ` viro
2004-04-02 19:07 ` viro
2004-04-02 20:23 ` viro
2004-04-02 22:40 ` Trond Myklebust
2004-04-02 23:06 ` viro
2004-04-02 23:23 ` Trond Myklebust
2004-04-03 0:53 ` Neil Brown
2004-04-02 23:19 ` Trond Myklebust
2004-04-02 19:17 ` Jamie Lokier [this message]
2004-04-02 19:25 ` viro
2004-04-02 19:32 ` Linus Torvalds
2004-04-02 19:37 ` viro
2004-04-02 19:45 ` Linus Torvalds
2004-04-02 20:08 ` viro
2004-04-02 20:40 ` Jamie Lokier
2004-04-02 20:59 ` Christoph Hellwig
2004-04-02 21:09 ` viro
2004-04-02 23:42 ` Jamie Lokier
2004-04-02 21:08 ` viro
2004-04-03 0:39 ` Jamie Lokier
2004-04-05 14:07 ` Stephen C. Tweedie
2004-03-30 15:07 ` Linus Torvalds
2004-04-02 16:14 ` viro
-- strict thread matches above, loose matches on Subject: below --
2004-03-30 15:13 Martin Schwidefsky
2004-03-29 19:07 Martin Schwidefsky
2004-03-29 20:11 ` Linus Torvalds
2004-03-29 20:29 ` Dave Kleikamp
2004-02-19 18:00 Martin Schwidefsky
2004-02-19 12:21 Carsten Otte
2004-02-19 16:53 ` Linus Torvalds
2004-02-19 17:39 ` Stephen C. Tweedie
2004-02-19 18:49 ` Andrew Morton
2004-02-19 20:28 ` Carsten Otte
2004-02-19 20:26 ` viro
2004-02-19 20:35 ` Carsten Otte
2004-02-19 20:14 ` Carsten Otte
2004-02-20 3:41 ` Andrew Morton
2004-02-19 20:19 ` Carsten Otte
[not found] ` <20040220164325.659c4e45.akpm@osdl.org>
[not found] ` <200402241338.57855.cotte@freenet.de>
2004-02-24 22:55 ` Andrew Morton
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=20040402191752.GB653@mail.shareable.org \
--to=jamie@shareable.org \
--cc=akpm@osdl.org \
--cc=cotte@de.ibm.com \
--cc=cotte@freenet.de \
--cc=dwmw2@infradead.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=schwidefsky@de.ibm.com \
--cc=sct@redhat.com \
--cc=shaggy@austin.ibm.com \
--cc=torvalds@osdl.org \
--cc=viro@parcelfarce.linux.theplanet.co.uk \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.