[dm-devel] [PATCH 4/4] dm: convert table_device.count from atomic_t to refcount_t

[Reshetova, Elena]

> On Fri, Nov 24, 2017 at 08:29:42AM +0000, Reshetova, Elena wrote:
> > By looking at the code, I don't see where the change in the reference counting
> > could have caused this.
> 
> The cause was the bug I identified in patch 3, not this patch.

Oh, ok, because I could not figure an issue with this patch. 
I will send the fixing patch shortly. 

Best Regards,
Elena.

> 
> The regression is easily hit - tables that reference the same underlying device
> more than once are very common.
> 
> Alasdair