linux-kernel - [PATCH 20/26] dax: Document dax dev range tuple

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Date: Sun, 24 Mar 2024 16:18:23 -0700
From: Ira Weiny <ira.weiny@...el.com>
To: Dave Jiang <dave.jiang@...el.com>, Fan Ni <fan.ni@...sung.com>, 
 Jonathan Cameron <Jonathan.Cameron@...wei.com>, 
 Navneet Singh <navneet.singh@...el.com>
Cc: Dan Williams <dan.j.williams@...el.com>, 
 Davidlohr Bueso <dave@...olabs.net>, 
 Alison Schofield <alison.schofield@...el.com>, 
 Vishal Verma <vishal.l.verma@...el.com>, Ira Weiny <ira.weiny@...el.com>, 
 linux-btrfs@...r.kernel.org, linux-cxl@...r.kernel.org, 
 linux-kernel@...r.kernel.org
Subject: [PATCH 20/26] dax: Document dax dev range tuple

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@...wei.com>
Signed-off-by: Ira Weiny <ira.weiny@...el.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;

-- 
2.44.0