[dm-devel] [PATCH v6 1/2] dax: introduce CONFIG_DAX_DRIVER

[Mike Snitzer]

On Wed, Nov 29 2017 at  2:00pm -0500,
Dan Williams <dan.j.williams at intel.com> wrote:

> In support of allowing device-mapper to compile out idle/dead code when
> there are no dax providers in the system, introduce the DAX_DRIVER
> symbol. This is selected by all leaf drivers that device-mapper might be
> layered on top. This allows device-mapper to conditionally 'select DAX'
> only when a provider is present.
> 
> Cc: Paul Mackerras <paulus at samba.org>
> Cc: Michael Ellerman <mpe at ellerman.id.au>
> Cc: Martin Schwidefsky <schwidefsky at de.ibm.com>
> Cc: Heiko Carstens <heiko.carstens at de.ibm.com>
> Cc: Gerald Schaefer <gerald.schaefer at de.ibm.com>
> Cc: Benjamin Herrenschmidt <benh at kernel.crashing.org>
> Cc: Mike Snitzer <snitzer at redhat.com>
> Cc: Bart Van Assche <Bart.VanAssche at wdc.com>
> Signed-off-by: Dan Williams <dan.j.williams at intel.com>

Reviewed-by: Mike Snitzer <snitzer at redhat.com>