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Date: Sat, 17 Feb 2001 20:23:31 +0100
From: Andrea Arcangeli <andrea@suse.de>
To: David Mansfield <lkml@dm.ultramaster.com>
Cc: Sasi Peter <sape@iq.rulez.org>,
        Godfrey Livingstone <godfrey@hattaway-associates.com>,
        linux-kernel@vger.kernel.org
Subject: Re: Ingo's RAID patch for 2.2.18 final?
Message-ID: <20010217202331.J30401@athlon.random>
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On Fri, Feb 16, 2001 at 10:53:51AM -0500, David Mansfield wrote:
> This may be a bit OT, but when you say O_DIRECT, that implies that you
> can pass that flag to open(2) and it will bypass the page cache, and

yes.

> read directly into user-space buffers (zero-copy IO)?  Does this also

yes.

> bypass the read-ahead mechanisms in the kernel?  Does it imply O_SYNC?

yes.

It's rawio through the fs. It's not included into 2.4-latest yet.

Andrea
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