linux-kernel - [RFC PATCH 3/6] block: add new genhd flag GENHD_FL_NO

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <96510d925cb0ca1a3a132f8f8affd4bbdafd8fc9.1689802933.git.daniel@makrotopia.org>
Date:   Wed, 19 Jul 2023 23:03:05 +0100
From:   Daniel Golle <daniel@...rotopia.org>
To:     Jens Axboe <axboe@...nel.dk>, Ulf Hansson <ulf.hansson@...aro.org>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Dave Chinner <dchinner@...hat.com>,
        Matthew Wilcox <willy@...radead.org>,
        Thomas Weißschuh <linux@...ssschuh.net>,
        Jan Kara <jack@...e.cz>, Daniel Golle <daniel@...rotopia.org>,
        Damien Le Moal <dlemoal@...nel.org>,
        Ming Lei <ming.lei@...hat.com>, Min Li <min15.li@...sung.com>,
        Christian Loehle <CLoehle@...erstone.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Hannes Reinecke <hare@...e.de>,
        Jack Wang <jinpu.wang@...os.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Yeqi Fu <asuk4.q@...il.com>, Avri Altman <avri.altman@....com>,
        Hans de Goede <hdegoede@...hat.com>,
        Ye Bin <yebin10@...wei.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rafał Miłecki <rafal@...ecki.pl>,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mmc@...r.kernel.org, linux-mtd@...ts.infradead.org
Subject: [RFC PATCH 3/6] block: add new genhd flag GENHD_FL_NO_NVMEM

Add new flag to destinguish block devices which should not act as an
NVMEM provider, such as for example an emulated block device on top of
an MTD partition which already acts as an NVMEM provider itself.

Signed-off-by: Daniel Golle <daniel@...rotopia.org>
---
 include/linux/blkdev.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 2f5371b8482c0..e853d1815be15 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -80,11 +80,14 @@ 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_NO_NVMEM``: NVMEM emulation is disabled.  The kernel will not
+ * emulate an NVMEM device on top of this disk.
  */
 enum {
 	GENHD_FL_REMOVABLE			= 1 << 0,
 	GENHD_FL_HIDDEN				= 1 << 1,
 	GENHD_FL_NO_PART			= 1 << 2,
+	GENHD_FL_NO_NVMEM			= 1 << 3,
 };
 
 enum {
-- 
2.41.0