On 04/03/2014 09:38 AM, Pádraig Brady wrote:
> I'd be as much worried about
> a clash with (dev_t)-1 as 0 TBH?
Absolutely.  I installed the attached patch, which should work 
regardless of what dev_t values are found in the file system. This fixes 
just this particular bug, though; I wouldn't be surprised if there are 
others (and haven't looked for them).