[dm-devel] [PATCH 1/2] device-mapper: use dynamic debug instead of compile-time config option

[Mike Snitzer]

On Thu, May 14 2020 at  2:09am -0400,
Hannes Reinecke <hare at suse.de> wrote:

> Switch to use dynamic debug to avoid having recompile the kernel
> just to enable debugging messages.
> 
> Signed-off-by: Hannes Reinecke <hare at suse.de>

FYI, I decided to always use pr_debug* rather than preserve using printk
if CONFIG_DM_DEBUG is enabled.  More consistent and less surprising for
a developer (to have to reason through how to enable debugging).

May cause initial surprise if debugging messages disappear despite
CONFIG_DM_DEBUG being enabled... but pretty sure DM developers can cope
(and/or help non-developers) as needed.

Patches were staged for 5.8, I also added an additional related cleanup:
https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git/log/?h=dm-5.8

Thanks,
Mike