From: Anton Blanchard <anton@samba.org>
To: Helge Hafting <helgehaf@aitel.hist.no>
Cc: Miquel van Smoorenburg <miquels@cistron.nl>,
linux-kernel@vger.kernel.org, neilb@cse.unsw.edu.au
Subject: Re: 2.5.40: raid0_make_request bug and bad: scheduling while atomic!
Date: Sun, 6 Oct 2002 22:24:22 +1000 [thread overview]
Message-ID: <20021006122422.GH22888@krispykreme> (raw)
In-Reply-To: <3DA01C81.D2BDD8C7@aitel.hist.no>
> The workaround is to force BIO's to be no bigger than a page.
> That limits performance, but it should still be somewhat better
> than the pre-bio times.
>
> This used to be fixable in mpage.c, where a comment
> explained what to to in precense of "braindead drivers"
> But mpage.c changed sometime between 2.5.36 and 2.5.39.
>
> Now the new include/linux/bio.h has the following:
> #define BIO_MAX_PAGES (256)
> I tried substituting (1) for (256), but it didn't help.
> So I don't mount raid-0 right now.
Peter Chubb mailed a fix for this to linux-kernel in the last week
and I can confirm it fixes all my raid0 problems. Thanks Peter!
http://marc.theaimsgroup.com/?l=linux-kernel&m=103369952814053&w=2
Anton
next prev parent reply other threads:[~2002-10-06 12:20 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-02 16:43 Miquel van Smoorenburg
2002-10-06 11:20 ` Helge Hafting
2002-10-06 12:24 ` Anton Blanchard [this message]
2002-10-09 21:47 ` Miquel van Smoorenburg
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