On Thu, Dec 17, 2009 at 04:40:24PM -0500, Josef Bacik wrote:
> This is just to mark the fs that it's been tinkered with to set the default
> subvolume.  It's a compatible change because older kernels will just ignore 
> the
> default setting and mount the same thing they always have.  Thanks,

I actually don't think this is a compatible change.  If someone mounts
under 2.6.33 and gets one filesystem, they will expect the same FS under
2.6.32.  We should make sure they get what they expect or a friendly
error message.

-chris
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