Re: [RFC PATCH] drivers/dax: Allow to include DEV_DAX_PMEM as builtin

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On Fri, Mar 29, 2019 at 10:42 PM Aneesh Kumar K.V
<aneesh.kumar@xxxxxxxxxxxxx> wrote:
>
> This move the dependency to DEV_DAX_PMEM_COMPAT such that only
> if DEV_DAX_PMEM is built as module we can allow the compat support.
>
> This allows to test the new code easily in a emulation setup where we
> often build things without module support.
>
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxx>
> ---
>  drivers/dax/Kconfig | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/dax/Kconfig b/drivers/dax/Kconfig
> index 5ef624fe3934..e582e088b48c 100644
> --- a/drivers/dax/Kconfig
> +++ b/drivers/dax/Kconfig
> @@ -23,7 +23,6 @@ config DEV_DAX
>  config DEV_DAX_PMEM
>         tristate "PMEM DAX: direct access to persistent memory"
>         depends on LIBNVDIMM && NVDIMM_DAX && DEV_DAX
> -       depends on m # until we can kill DEV_DAX_PMEM_COMPAT
>         default DEV_DAX
>         help
>           Support raw access to persistent memory.  Note that this
> @@ -50,7 +49,7 @@ config DEV_DAX_KMEM
>
>  config DEV_DAX_PMEM_COMPAT
>         tristate "PMEM DAX: support the deprecated /sys/class/dax interface"
> -       depends on DEV_DAX_PMEM
> +       depends on DEV_DAX_PMEM=m

Looks ok, just also a needs a "depends on m" here, because
DEV_DAX_PMEM_COMPAT=y is an invalid config.




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