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Re: [Qemu-devel] [PATCH 2/2 v2] Direct IDE I/O


From: Laurent Vivier
Subject: Re: [Qemu-devel] [PATCH 2/2 v2] Direct IDE I/O
Date: Tue, 04 Dec 2007 09:13:31 +0100

Le lundi 03 décembre 2007 à 19:16 +0000, Paul Brook a écrit :
> > Yes, librt is providing posix-aio, and librt coming with GNU libc uses
> > threads.
> > But if I remember correctly librt coming with RHEL uses a mix of threads
> > and linux kernel AIO (you can have a look to the .srpm of libc).
> >
> > BTW, if everyone thinks it could be a good idea I can port block-raw.c
> > to use linux kernel AIO (without removing POSIX AIO support, of course)
> 
> This seems rather pointless, given a user can just use a linux-AIO librt 
> instead.

Just a comment: to use linux-aio, file must be opened with O_DIRECT.
(it's a good reason to include my patch, isn't it ?)

Laurent
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