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Message-ID: <64a43062-b78b-472f-92be-82ff60eeb70c@intel.com>
Date: Mon, 1 Apr 2024 10:06:15 -0700
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Subject: Re: [PATCH 20/26] dax: Document dax dev range tuple
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To: Ira Weiny <ira.weiny@intel.com>, Fan Ni <fan.ni@samsung.com>,
 Jonathan Cameron <Jonathan.Cameron@huawei.com>,
 Navneet Singh <navneet.singh@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>,
 Davidlohr Bueso <dave@stgolabs.net>,
 Alison Schofield <alison.schofield@intel.com>,
 Vishal Verma <vishal.l.verma@intel.com>, linux-btrfs@vger.kernel.org,
 linux-cxl@vger.kernel.org, linux-kernel@vger.kernel.org
References: <20240324-dcd-type2-upstream-v1-0-b7b00d623625@intel.com>
 <20240324-dcd-type2-upstream-v1-20-b7b00d623625@intel.com>
From: Dave Jiang <dave.jiang@intel.com>
In-Reply-To: <20240324-dcd-type2-upstream-v1-20-b7b00d623625@intel.com>
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On 3/24/24 4:18 PM, Ira Weiny wrote:
> The device DAX structure is being enhanced to track additional DCD
> information.
> 
> The current range tuple was not fully documented.  Document it prior to
> adding information for DC.
> 
> Suggested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
> 
> ---
> Changes for v1
> [iweiny: new patch]
> ---
>  drivers/dax/dax-private.h | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/dax/dax-private.h b/drivers/dax/dax-private.h
> index c6319c6567fb..ac1ccf158650 100644
> --- a/drivers/dax/dax-private.h
> +++ b/drivers/dax/dax-private.h
> @@ -70,7 +70,10 @@ struct dax_mapping {
>   * @dev - device core
>   * @pgmap - pgmap for memmap setup / lifetime (driver owned)
>   * @nr_range: size of @ranges
> - * @ranges: resource-span + pgoff tuples for the instance
> + * @ranges: range tuples of memory used
> + * @pgoff: page offset
> + * @range: resource-span
> + * @mapping: device to assist in interrogating the range layout
>   */
>  struct dev_dax {
>  	struct dax_region *region;
>