linux-kernel - Re: 2.6.27-rc4: lots of 'in_atomic():1, irqs

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Date:	Thu, 28 Aug 2008 09:56:07 +0200
From:	Andre Noll <maan@...temlinux.org>
To:	Jens Axboe <jens.axboe@...cle.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>, jurriaan <thunder7@...all.nl>,
	linux-kernel@...r.kernel.org, Neil Brown <neilb@...e.de>
Subject: Re: 2.6.27-rc4: lots of 'in_atomic():1, irqs_disabled():0' with  software-raid1

On 09:48, Jens Axboe wrote:
> Doh right, we of course can't block inside a RCU section. Then
> bitmap.c:write_sb_page() wants fixing:
> 
>         rcu_read_lock();
>         rdev_for_each_rcu(...)
>                 md_super_write(...)
>                         bio_alloc(GFP_NOIO, 1);

Also, md_super_write() does not check the return value of bio_alloc().
That probably needs fixing as well.

Andre
-- 
The only person who always got his work done by Friday was Robinson Crusoe

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