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Message-ID: <20111128122416.GA25996@localhost>
Date:	Mon, 28 Nov 2011 12:24:16 +0000
From:	Andy Whitcroft <apw@...onical.com>
To:	Jonathan Nieder <jrnieder@...il.com>
Cc:	Chris Mason <chris.mason@...cle.com>,
	Josef Bacik <josef@...hat.com>,
	Miao Xie <miaox@...fujitsu.com>,
	Ivan Vilata i Balaguer <ivan@...idor.net>,
	linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] btrfs: btrfs_calc_avail_data_space cope with no
 read/write devices V2

On Mon, Nov 28, 2011 at 06:11:06AM -0600, Jonathan Nieder wrote:
> Hi,
> 
> Andy Whitcroft wrote:
> 
> > When we mount a btrfs filesystem from read-only media there will be no
> > read/write devices; for example mounting an SD card with its lock enabled.
> > This triggers an immediate BUG during mount:
> >
> >   kernel BUG at .../fs/btrfs/super.c:984!
> [...]
> > BugLink: http://bugs.launchpad.net/bugs/816770
> > Signed-off-by: Andy Whitcroft <apw@...onical.com>
> > ---
> 
> Fixes http://bugs.debian.org/649847
> Tested-by: Ivan Vilata i Balaguer <ivan@...idor.net>
> 
> This patch fixes a regression introduced by 6d07bcec969a ("btrfs: fix
> wrong free space information of btrfs"), which hit mainline in
> v2.6.38-rc1.  Josef Bacik acked the patch, but I can't seem to find it
> in linux-next, linux-btrfs, or Josef's btrfs-work tree.  Maybe it was
> just forgotten.
> 
> What can I do to help this patch get unstuck?

I had completely forgotten about this one.  I wonder where it did get
to.  I seem to remember testing this in house successfully.

-apw
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