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Re: xfs: possible circular locking dependency detected

To: Wu Fengguang <fengguang.wu@xxxxxxxxx>
Subject: Re: xfs: possible circular locking dependency detected
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Sat, 13 Dec 2008 09:02:44 +1100
Cc: David Chinner <dgc@xxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <20081206132023.GA21235@localhost>
Mail-followup-to: Wu Fengguang <fengguang.wu@xxxxxxxxx>, David Chinner <dgc@xxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxx>, xfs@xxxxxxxxxxx
References: <20081206132023.GA21235@localhost>
User-agent: Mutt/1.5.18 (2008-05-17)
On Sat, Dec 06, 2008 at 09:20:24PM +0800, Wu Fengguang wrote:
> Hi Dave,
> 
> I got this warning while accessing xfs on usb storage.
> Is this a real problem?

False positive. I haven't had time to add and test the lockdep
annotation Peter created last week to allow us to avoid this,
but hopefully that will make it go away.

Cheers,

Dave.
-- 
Dave Chinner
david@xxxxxxxxxxxxx

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