[dm-devel] dm: Fix a recently introduced reference counting bug

[Bart Van Assche]

On Wed, 2017-12-13 at 17:57 -0500, Mike Snitzer wrote:
> I've had a fix for this staged in linux-next for a while.  Will be
> sending it to Linus tomorrow, see:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git/commit/?h=dm-4.15&id=afc567a4977b2d798e05153dd131a3c8d4758c0c
> 
> BTW, there was no need to cc: stable given that it'll get fixed in 4.15
> (issue was introduced during the 4.15 merge).

Had that patch already been posted on the dm-devel mailing list? If not, I
think that's unfortunate.

Anyway, would it be possible to elaborate the commit message? Others also
ran into this bug. See e.g. https://marc.info/?l=linux-block&m=151215418123126&w=2.

Thanks,

Bart.