[PATCH] ubd: Remove unused mutex 'ubd_mutex'

[Christoph Hellwig]

On Mon, May 20, 2024 at 03:12:20PM +0000, Dr. David Alan Gilbert wrote:
> * Christoph Hellwig (hch at lst.de) wrote:
> > Looks good:
> > 
> > Reviewed-by: Christoph Hellwig <hch at lst.de>
> 
> Thanks Christoph; any ideas who might take this?

Probably Richard who is alredy on Cc.