From: Christian Kujau <lists@nerdbynature.de>
To: Dave Chinner <david@fromorbit.com>
Cc: xfs@oss.sgi.com, LKML <linux-kernel@vger.kernel.org>
Subject: Re: lockdep: inconsistent lock state
Date: Sun, 27 Dec 2009 14:01:07 -0800 (PST) [thread overview]
Message-ID: <alpine.DEB.2.01.0912271355550.3483@bogon.housecafe.de> (raw)
In-Reply-To: <20091227212700.GA7613@discord.disaster>
On Mon, 28 Dec 2009 at 08:27, Dave Chinner wrote:
> from kswapd inverts lock ordering and so we get this report. This
> case has never been a deadlock case because an inode in reclaim
> cannot be referenced by any other path, so once again it is a
> false positive....
OK, thanks for confirming this. I've only seen this during
bonnie++ tests so far, and it's always reproducible there, but
I've not seen it during "normal use". It's still scary though. Just
checked, opensuse and fedora have CONFIG_LOCKDEP_SUPPORT=y but no
related DEBUG options set, so it probably won't ever show up for
the general public.
Christian.
--
BOFH excuse #278:
The Dilithium Crystals need to be rotated.
next prev parent reply other threads:[~2009-12-27 22:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-26 21:07 Christian Kujau
2009-12-27 21:27 ` Dave Chinner
2009-12-27 22:01 ` Christian Kujau [this message]
2010-01-06 17:36 ` Christoph Hellwig
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