From: Joel Becker <Joel.Becker@oracle.com>
To: Rob van Nieuwkerk <robn@verdi.et.tudelft.nl>
Cc: Andrew Morton <akpm@digeo.com>, linux-kernel@vger.kernel.org
Subject: Re: O_DIRECT alignment requirements ?
Date: Wed, 9 Apr 2003 16:27:15 -0700 [thread overview]
Message-ID: <20030409232715.GE31739@ca-server1.us.oracle.com> (raw)
In-Reply-To: <200304092109.h39L9OV08801@verdi.et.tudelft.nl>
On Wed, Apr 09, 2003 at 11:09:23PM +0200, Rob van Nieuwkerk wrote:
> But a friend of mine uses O_DIRECT with 2.4 kernels to read *individual*
> single harddisk sectors of 512 bytes ! He claims that my original
> theory is the right one and that you can read 512 byte chunks on 512
> byte bounderies (he uses the complete device eg. /dev/hda).
Well, how does your friend access /dev/hda? Is he using raw
devices?
Joel
--
"What do you take me for, an idiot?"
- General Charles de Gaulle, when a journalist asked him
if he was happy.
Joel Becker
Senior Member of Technical Staff
Oracle Corporation
E-mail: joel.becker@oracle.com
Phone: (650) 506-8127
next prev parent reply other threads:[~2003-04-09 23:17 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-09 12:16 O_DIRECT alignment requirements ? Rob van Nieuwkerk
2003-04-09 15:48 ` Joel Becker
2003-04-09 16:53 ` Rob van Nieuwkerk
2003-04-09 17:59 ` Joel Becker
2003-04-09 19:15 ` Andrew Morton
2003-04-09 21:09 ` Rob van Nieuwkerk
2003-04-09 23:27 ` Joel Becker [this message]
2003-04-10 16:33 ` Rob van Nieuwkerk
2003-04-09 18:08 ` Benjamin LaHaise
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