From: Jeff Garzik <jgarzik@pobox.com>
To: Jamie Lokier <jamie@shareable.org>
Cc: Andrew Morton <akpm@osdl.org>,
davej@codemonkey.org.uk, linux-kernel@vger.kernel.org
Subject: Re: 2.5 'what to expect'
Date: Sat, 12 Jul 2003 15:03:54 -0400 [thread overview]
Message-ID: <3F105B9A.7070803@pobox.com> (raw)
In-Reply-To: <20030712183929.GA10450@mail.jlokier.co.uk>
Jamie Lokier wrote:
> Andrew Morton wrote:
>
>>>One problem is O_DIRECT should return an error on open(2) or fcntl(2),
>>> not write(2).
>>
>>That is the 2.5 behaviour.
>
>
> What do you mean?
>
> The problem with db4 is that operations on O_DIRECT handles now return
> EINVAL if the address isn't suitable aligned, and db4 is not expecting
> that - it aborts. That was true for 2.5.74, at least.
These are separate db4+kernel problems.
The first is that there needs to be a reliable way to know if O_DIRECT
writes are going to succeed or not. The 2.4 kernel fails on write(2)
but not open(2) or fcntl(2).
The second is that db4 doesn't appear to know about the alignment
requirement.
Jeff
next prev parent reply other threads:[~2003-07-12 18:49 UTC|newest]
Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-11 14:02 2.5 'what to expect' Dave Jones
2003-07-11 14:26 ` Alan Cox
2003-07-11 14:46 ` Tomas Szepe
2003-07-11 15:00 ` Alan Cox
2003-07-11 15:11 ` Larry McVoy
2003-07-11 15:37 ` Steven Cole
2003-07-11 17:19 ` Alan Cox
2003-07-11 17:51 ` Brian Gerst
2003-07-12 10:34 ` Dave Jones
2003-07-11 14:55 ` Bartlomiej Zolnierkiewicz
2003-07-11 15:58 ` Jeff Garzik
2003-07-11 16:23 ` Bartlomiej Zolnierkiewicz
2003-07-11 17:02 ` Jeff Garzik
2003-07-11 17:09 ` Christoph Hellwig
2003-07-11 20:43 ` Andries Brouwer
2003-07-11 15:05 ` Paul Mundt
2003-07-11 15:56 ` Jeff Garzik
2003-07-11 20:38 ` Andries Brouwer
2003-07-12 15:38 ` Jamie Lokier
[not found] ` <20030715000331.GB904@matchmail.com>
2003-07-15 17:08 ` Andries Brouwer
2003-07-15 19:42 ` Mike Fedyk
2003-07-15 20:03 ` Andries Brouwer
2003-07-15 21:14 ` Kevin Corry
2003-07-16 4:16 ` Peter Chubb
2003-07-16 17:07 ` Mike Fedyk
2003-07-16 17:53 ` Martin Hermanowski
2003-07-11 17:33 ` Robert Love
2003-07-12 0:38 ` Barry K. Nathan
2003-07-12 1:03 ` Jeff Garzik
2003-07-14 17:18 ` Robert Love
2003-07-11 20:07 ` Andries Brouwer
2003-07-11 20:53 ` Brian Gerst
2003-07-11 21:19 ` Shawn
2003-07-11 22:00 ` Alan Cox
2003-07-12 2:31 ` Wichert Akkerman
2003-07-11 14:37 ` Oleg Drokin
2003-07-11 14:50 ` Paul Dickson
2003-07-11 15:02 ` Paul Nasrat
2003-07-14 9:07 ` Vojtech Pavlik
2003-07-11 15:43 ` James Morris
2003-07-11 17:10 ` Christoph Hellwig
2003-07-12 17:38 ` James Morris
2003-07-11 15:59 ` Flameeyes
2003-07-11 16:04 ` Jeff Garzik
2003-07-11 17:23 ` Flameeyes
2003-07-11 16:01 ` Wiktor Wodecki
2003-07-11 16:03 ` Matthew Dharm
2003-07-11 16:23 ` Tom Rini
2003-07-11 18:14 ` Mike Fedyk
2003-07-11 19:33 ` Jeff Garzik
2003-07-11 22:01 ` Alan Cox
2003-07-11 19:22 ` Davide Libenzi
2003-07-11 19:37 ` Andrew Theurer
2003-07-11 19:54 ` Jeff Garzik
2003-07-11 20:06 ` Andrew Theurer
2003-07-11 19:59 ` Mike Fedyk
2003-07-11 20:30 ` Andrew Theurer
2003-07-11 21:16 ` James H. Cloos Jr.
2003-07-11 22:24 ` Greg KH
2003-07-12 13:10 ` Meelis Roos
2003-07-12 20:23 ` Dave Jones
2003-07-12 22:15 ` Andrew Morton
2003-07-13 0:08 ` Jens Axboe
2003-07-12 15:24 ` Jamie Lokier
2003-07-12 15:58 ` Jeff Garzik
2003-07-12 18:27 ` Andrew Morton
2003-07-12 18:39 ` Jamie Lokier
2003-07-12 19:03 ` Jeff Garzik [this message]
2003-07-12 19:34 ` Jamie Lokier
2003-07-12 19:38 ` Jeff Garzik
2003-07-12 19:46 ` Jamie Lokier
2003-07-13 15:51 ` Andreas Dilger
2003-07-13 15:55 ` Jeff Garzik
2003-07-14 0:03 ` Rob van Nieuwkerk
2003-07-14 8:01 ` Alan Cox
2003-07-13 12:48 ` Pavel Machek
2003-07-14 6:51 ` Maneesh Soni
2003-07-14 11:39 ` Dave Jones
2003-07-14 8:30 ` Romano Giannetti
2003-07-14 11:41 ` Dave Jones
2003-07-14 11:52 ` Bernhard Rosenkraenzer
2003-07-14 12:13 ` Arjan van de Ven
2003-07-14 12:19 ` Paul Nasrat
2003-07-14 12:37 ` Philip Wyett
2003-07-14 14:05 ` Arjan van de Ven
2003-07-14 19:34 ` Paul Nasrat
2003-07-17 20:54 ` Jeff Garzik
2003-07-17 21:16 ` Mike Fedyk
2003-07-17 21:23 ` Jeff Garzik
2003-07-18 8:10 ` Christoph Hellwig
2003-07-18 18:48 ` Krzysztof Halasa
2003-07-11 17:51 Mikael Pettersson
[not found] <fa.eq8e50t.1hkoiqh@ifi.uio.no>
2003-07-12 13:25 ` Terje Kvernes
2003-07-16 22:43 Matt_Domsch
2003-07-16 23:05 ` Kevin P. Fleming
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