From: Dave Jones <davej@codemonkey.org.uk>
To: Andries Brouwer <aebr@win.tue.nl>
Cc: Matti Aarnio <matti.aarnio@zmailer.org>, linux-kernel@vger.kernel.org
Subject: Re: open(.. O_DIRECT ..) difference in between Linux and FreeBSD ..
Date: Thu, 12 Jun 2003 15:58:14 +0100 [thread overview]
Message-ID: <20030612145814.GB14795@suse.de> (raw)
In-Reply-To: <20030612151704.A2588@pclin040.win.tue.nl>
On Thu, Jun 12, 2003 at 03:17:04PM +0200, Andries Brouwer wrote:
> Transfer sizes, and the alignment of user buffer
> and file offset must all be multiples of the logi-
> cal block size of the file system.
Just to confirm something that I wrote in the post-halloween-2.5 doc,
that doesn't tally with this..
- The size and alignment of O_DIRECT file IO requests now matches that
of the device, not the filesystem. Typically this means that
you can perform O_DIRECT IO with 512-byte granularity rather than 4k.
Is this a case of the man pages not following 2.5 yet, or is this
incorrect ?
Dave
next prev parent reply other threads:[~2003-06-12 14:44 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-12 11:14 open(.. O_DIRECT ..) difference in between Linux and FreeBSD Matti Aarnio
2003-06-12 11:24 ` Christoph Hellwig
2003-06-12 13:17 ` Andries Brouwer
2003-06-12 14:58 ` Dave Jones [this message]
2003-06-12 15:09 ` Matti Aarnio
2003-06-12 23:14 ` Nuno Silva
2003-06-13 21:05 ` Andries Brouwer
2003-06-12 23:12 ` Rob van Nieuwkerk
2003-06-13 7:47 ` Arjan van de Ven
2003-06-13 8:27 ` Rob van Nieuwkerk
2003-06-13 8:28 ` Arjan van de Ven
2003-06-13 9:02 ` Rob van Nieuwkerk
[not found] <20030612111437.GE28900@mea-ext.zmailer.org.suse.lists.linux.kernel>
2003-06-12 11:26 ` Andi Kleen
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