From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Erez Zadok <ezk@cs.sunysb.edu>
Cc: sct@redhat.com, akpm@linux-foundation.org, adilger@clusterfs.com,
linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: ext3 lockdep warning in 2.6.25-rc6
Date: Sat, 22 Mar 2008 18:38:47 +0100 [thread overview]
Message-ID: <1206207527.6437.83.camel@lappy> (raw)
In-Reply-To: <200803221437.m2MEbO5H003869@agora.fsl.cs.sunysb.edu>
On Sat, 2008-03-22 at 10:37 -0400, Erez Zadok wrote:
> I was building a kernel using "make -j 4" inside a unionfs, mounted on top
> of ext3. The kernel is vanilla 2.6.25-rc6 plus unionfs patches. At some
> point I forced a cache flush using "echo 3 > /proc/sys/vm/drop_caches" and I
> got the lockdep warning below. Note that unionfs doesn't appear to be
> involved in this lockdep warning at all, so I suspect this is probably an
> issue between jbd and ext3 directly.
Known issue, drop_caches isn't production quality.
next prev parent reply other threads:[~2008-03-22 17:39 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-22 14:37 ext3 lockdep warning in 2.6.25-rc6 Erez Zadok
2008-03-22 17:38 ` Peter Zijlstra [this message]
2008-03-22 22:34 ` Erez Zadok
2008-03-23 11:06 ` Peter Zijlstra
2008-03-25 18:29 ` Jan Kara
2008-04-01 21:23 ` Erez Zadok
2008-04-02 8:12 ` Jan Kara
2008-04-02 16:34 ` Erez Zadok
2008-04-04 3:14 ` David Chinner
2008-04-04 15:37 ` Erez Zadok
2008-04-07 11:47 ` Jan Kara
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