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: <17853.33116.113629.65031@notabene.brown>
Date:	Mon, 29 Jan 2007 16:08:44 +1100
From:	Neil Brown <neilb@...e.de>
To:	Trond Myklebust <trond.myklebust@....uio.no>
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 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


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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