linux-kernel - [PATCH v2 4/9] block: add new genhd flag GENHD_FL

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Date: Thu, 30 May 2024 03:14:49 +0100
From: Daniel Golle <daniel@...rotopia.org>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Ulf Hansson <ulf.hansson@...aro.org>, Jens Axboe <axboe@...nel.dk>,
	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
	Daniel Golle <daniel@...rotopia.org>,
	Dave Chinner <dchinner@...hat.com>, Jan Kara <jack@...e.cz>,
	Christian Brauner <brauner@...nel.org>,
	Thomas Weißschuh <linux@...ssschuh.net>,
	Al Viro <viro@...iv.linux.org.uk>,
	Li Lingfeng <lilingfeng3@...wei.com>,
	Christian Heusel <christian@...sel.eu>,
	Min Li <min15.li@...sung.com>, Avri Altman <avri.altman@....com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Hannes Reinecke <hare@...e.de>,
	Mikko Rapeli <mikko.rapeli@...aro.org>, Yeqi Fu <asuk4.q@...il.com>,
	Victor Shih <victor.shih@...esyslogic.com.tw>,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>,
	Li Zhijian <lizhijian@...itsu.com>,
	"Ricardo B. Marliere" <ricardo@...liere.net>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-mmc@...r.kernel.org, linux-block@...r.kernel.org
Subject: [PATCH v2 4/9] block: add new genhd flag GENHD_FL_NVMEM

Add new flag to destinguish block devices which may act as an NVMEM
provider.

Signed-off-by: Daniel Golle <daniel@...rotopia.org>
---
 include/linux/blkdev.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 0a8c3478a462..c3365856e67b 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -81,11 +81,13 @@ struct partition_meta_info {
  * ``GENHD_FL_NO_PART``: partition support is disabled.  The kernel will not
  * scan for partitions from add_disk, and users can't add partitions manually.
  *
+ * ``GENHD_FL_NVMEM``: the block device should be considered as NVMEM provider.
  */
 enum {
 	GENHD_FL_REMOVABLE			= 1 << 0,
 	GENHD_FL_HIDDEN				= 1 << 1,
 	GENHD_FL_NO_PART			= 1 << 2,
+	GENHD_FL_NVMEM				= 1 << 3,
 };
 
 enum {
-- 
2.45.1