linux-kernel - Re: 2.6.20.3 - possible recursive locking detected

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Message-ID: <9a8748490704260317u211c244au3c5478ac02c12c43@mail.gmail.com>
Date:	Thu, 26 Apr 2007 12:17:47 +0200
From:	"Jesper Juhl" <jesper.juhl@...il.com>
To:	"David Chinner" <dgc@....com>
Cc:	linux-kernel@...r.kernel.org, xfs-masters@....sgi.com,
	xfs@....sgi.com, viro@...iv.linux.org.uk
Subject: Re: 2.6.20.3 - possible recursive locking detected - in XFS

On 26/04/07, David Chinner <dgc@....com> wrote:
> On Wed, Apr 25, 2007 at 11:16:57AM +0200, Jesper Juhl wrote:
> >
> > Hi,
> >
> > For your information :
> >
> > Once in a while I see the message below after I've just created a new XFS filesystem, mount it and then start copying data to it.
>
> .....
>
> > =============================================
> > [ INFO: possible recursive locking detected ]
> > 2.6.20.3generic #1
> > ---------------------------------------------
> > xfs_fsr/6117 is trying to acquire lock:
> >  (&(&ip->i_lock)->mr_lock){----}, at: [<f929422d>] xfs_ilock+0x7d/0xa0 [xfs]
> >
> > but task is already holding lock:
> >  (&(&ip->i_lock)->mr_lock){----}, at: [<f929422d>] xfs_ilock+0x7d/0xa0 [xfs]
>
> Known false positive - XFS doesn't have the annotations needed for
> this yet; we've got a patch that will probably make it's way into 6.5.22 that
> should fix most of these issues.
>
Ok. Thanks for the feedback.

-- 
Jesper Juhl <jesper.juhl@...il.com>
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