From: "Stephen C. Tweedie" <sct@redhat.com>
To: Beau Kuiper <kuib-kl@ljbc.wa.edu.au>,
linux-kernel@vger.kernel.org, tovarlds@transmeta.com,
Stephen Tweedie <sct@redhat.com>
Subject: Re: [PATCH] Significant performace improvements on reiserfs systems, kupdated bugfixes
Date: Mon, 24 Sep 2001 15:37:00 +0100 [thread overview]
Message-ID: <20010924153700.B13817@redhat.com> (raw)
In-Reply-To: <Pine.LNX.4.30.0109201445170.13543-100000@gamma.student.ljbc> <20010921152627.C13862@emma1.emma.line.org>
In-Reply-To: <20010921152627.C13862@emma1.emma.line.org>; from matthias.andree@stud.uni-dortmund.de on Fri, Sep 21, 2001 at 03:26:27PM +0200
Hi,
On Fri, Sep 21, 2001 at 03:26:27PM +0200, Matthias Andree wrote:
> Be careful! MTAs rely on this behaviour on fsync(). The official
> consensus on ReiserFS and ext3 on current Linux 2.4.x kernels (x >= 9)
> is that "any synchronous operation flushes all pending operations", and
> if that is changed, you MUST make sure that the changed ReiserFS/ext3fs
> still make all the guarantees that softupdated BSD file systems make,
> lest you want people to run their mail queues off "sync" disks.
Reiserfs and ext3 have their own IO ordering --- they don't commit
transactions until the log writes for _all_ of the blocks in those
transactions have been acknowledged. Reordering outstanding IOs won't
affect the fsync guarantees at all.
--Stephen
next prev parent reply other threads:[~2001-09-24 14:37 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-20 7:12 [PATCH] Significant performace improvements on reiserfs systems, kupdated bugfixes Beau Kuiper
2001-09-20 12:16 ` Chris Mason
2001-09-20 15:20 ` Beau Kuiper
2001-09-20 16:15 ` Andreas Dilger
2001-09-20 16:22 ` Beau Kuiper
2001-09-21 20:12 ` Lehmann
2001-09-21 20:57 ` Rik van Riel
2001-09-21 22:50 ` Lehmann
2001-09-21 13:26 ` Matthias Andree
2001-09-22 18:38 ` Beau Kuiper
2001-09-22 19:32 ` Matthias Andree
2001-09-23 15:24 ` Chris Mason
2001-09-24 14:37 ` Stephen C. Tweedie [this message]
-- strict thread matches above, loose matches on Subject: below --
2001-09-20 17:23 Chris Mason
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=20010924153700.B13817@redhat.com \
--to=sct@redhat.com \
--cc=kuib-kl@ljbc.wa.edu.au \
--cc=linux-kernel@vger.kernel.org \
--cc=tovarlds@transmeta.com \
/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