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To: Andrew Morton <akpm@zip.com.au>
Cc: Joel Becker <jlbec@evilplan.org>, Anton Altaparmakov <aia21@cam.ac.uk>,
        Jeff Garzik <jgarzik@mandrakesoft.com>, linux-kernel@vger.kernel.org,
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Subject: Re: fadvise syscall?
From: "Martin K. Petersen" <mkp@mkp.net>
Organization: mkp.net
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Date: 18 Mar 2002 09:39:19 -0500
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>>>>> "Andrew" == Andrew Morton <akpm@zip.com.au> writes:

Andrew> O_DIRECT is broken against RAID0 (at least) in 2.5 at present.
Andrew> The RAID driver gets sent BIOs which straddle two or more
Andrew> chunks and RAID spits out lots of unpleasant warnings.  Neil
Andrew> has been informed...

Yep.  I've been porting my original kiobuf based request splitter to
biobufs.  It's almost there, I've just been extremely busy with
something else for a while.

It's not only when you straddle chunks.  The current code does not
handle requests straddling RAID zones either.

-- 
Martin K. Petersen, Principal Linux Consultant, Linuxcare, Inc.
mkp@linuxcare.com, http://www.linuxcare.com/
SGI XFS for Linux Developer, http://oss.sgi.com/projects/xfs/

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