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Date: Thu, 11 Dec 2008 22:32:13 +0100
From: Christoph Hellwig <hch@lst.de>
Subject: Re: [Qemu-devel] [RFC] Replace posix-aio with custom thread pool
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To: qemu-devel@nongnu.org
Cc: Gerd Hoffmann <kraxel@redhat.com>, kvm-devel <kvm@vger.kernel.org>

On Thu, Dec 11, 2008 at 05:49:47PM +0100, Andrea Arcangeli wrote:
> On Thu, Dec 11, 2008 at 05:11:08PM +0100, Gerd Hoffmann wrote:
> > Yes.  But kernel aio requires O_DIRECT, so aio users are affected
> > nevertheless.
> 
> Are you sure? It surely wasn't the case...

Mainline kernel aio only implements O_DIRECT.  Some RHEL version had
support for buffered kernel AIO.