linux-kernel - Re: [NFS] 2.6.17.8 - do_vfs_lock: VFS is out of sync with lock manager!

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Message-Id: <1170080210.5757.6.camel@lade.trondhjem.org>
Date:	Mon, 29 Jan 2007 09:16:50 -0500
From:	Trond Myklebust <trond.myklebust@....uio.no>
To:	Neil Brown <neilb@...e.de>
Cc:	Jesper Juhl <jesper.juhl@...il.com>, nfs@...ts.sourceforge.net,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [NFS] 2.6.17.8 - do_vfs_lock: VFS is out of sync with lock
	manager!

On Mon, 2007-01-29 at 16:08 +1100, Neil Brown wrote:
> On Monday August 21, trond.myklebust@....uio.no wrote:
> > 
> > Could we instead replace it with a dprintk() that returns the value of
> > "res"? That will keep it useful for debugging purposes.
> 
> (only 5 months later...)
> 
> Sure, how about this?
> 
> Thanks,
> NeilBrown

ACKed.

Thanks Neil!

Trond

> 
> Remove warning: VFS is out of sync with lock manager.
> 
> But keep it as a dprintk
> 
> The message can be generated in a quite normal situation:
>  If a 'lock' request is interrupted, then the lock client needs to
>   record that the server has the lock, incase it does.
>  When we come the unlock, the server might say it doesn't, even
>   though we think it does (or might) and this generates the message.
> 
> Signed-off-by: Neil Brown <neilb@...e.de>
> 
> ### Diffstat output
>  ./fs/nfs/file.c |    5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff .prev/fs/nfs/file.c ./fs/nfs/file.c
> --- .prev/fs/nfs/file.c	2007-01-29 16:04:09.000000000 +1100
> +++ ./fs/nfs/file.c	2007-01-29 16:04:45.000000000 +1100
> @@ -434,8 +434,9 @@ static int do_vfs_lock(struct file *file
>  			BUG();
>  	}
>  	if (res < 0)
> -		printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n",
> -				__FUNCTION__);
> +		dprintk(KERN_WARNING "%s: VFS is out of sync with lock manager"
> +			" - error %d!\n",
> +				__FUNCTION__, res);
>  	return res;
>  }
>  

-
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