linux-kernel - Re: [PATCH 2/4] nvdimm: Add IOCTL pass thru

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Date:	Tue, 10 Nov 2015 13:05:20 -0500
From:	Jeff Moyer <jmoyer@...hat.com>
To:	Jerry Hoemann <jerry.hoemann@....com>
Cc:	ross.zwisler@...ux.intel.com, rjw@...ysocki.net, lenb@...nel.org,
	dan.j.williams@...el.com, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-nvdimm@...1.01.org
Subject: Re: [PATCH 2/4] nvdimm: Add IOCTL pass thru

Jerry Hoemann <jerry.hoemann@....com> writes:

> Add internal data structure for ndctl_passthru call.
>
> Signed-off-by: Jerry Hoemann <jerry.hoemann@....com>
> ---
>  include/linux/libnvdimm.h | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h
> index 3f021dc..01117e1 100644
> --- a/include/linux/libnvdimm.h
> +++ b/include/linux/libnvdimm.h
> @@ -72,6 +72,7 @@ struct nvdimm_bus_descriptor {
>  	unsigned long dsm_mask;
>  	char *provider_name;
>  	ndctl_fn ndctl;
> +	ndctl_fn ndctl_passthru;

I don't think this is necessary.  Vector off inside of __nd_ioctl.  That
especially makes sense if you do switch to passthrough as a command
instead of a type, but it can work either way.

-Jeff
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