linux-kernel - [PATCH 0/2] ndctl: Add daxctl support for the new "famfs" mode of devdax

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Message-ID: <20260107153459.64821-1-john@groves.net>
Date: Wed,  7 Jan 2026 09:34:57 -0600
From: John Groves <John@...ves.net>
To: John Groves <John@...ves.net>,
	Miklos Szeredi <miklos@...redi.hu>,
	Dan Williams <dan.j.williams@...el.com>,
	Bernd Schubert <bschubert@....com>,
	Alison Schofield <alison.schofield@...el.com>
Cc: John Groves <jgroves@...ron.com>,
	Jonathan Corbet <corbet@....net>,
	Vishal Verma <vishal.l.verma@...el.com>,
	Dave Jiang <dave.jiang@...el.com>,
	Matthew Wilcox <willy@...radead.org>,
	Jan Kara <jack@...e.cz>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	David Hildenbrand <david@...nel.org>,
	Christian Brauner <brauner@...nel.org>,
	"Darrick J . Wong" <djwong@...nel.org>,
	Randy Dunlap <rdunlap@...radead.org>,
	Jeff Layton <jlayton@...nel.org>,
	Amir Goldstein <amir73il@...il.com>,
	Jonathan Cameron <Jonathan.Cameron@...wei.com>,
	Stefan Hajnoczi <shajnocz@...hat.com>,
	Joanne Koong <joannelkoong@...il.com>,
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	Bagas Sanjaya <bagasdotme@...il.com>,
	Chen Linxuan <chenlinxuan@...ontech.com>,
	James Morse <james.morse@....com>,
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	Sean Christopherson <seanjc@...gle.com>,
	Shivank Garg <shivankg@....com>,
	Ackerley Tng <ackerleytng@...gle.com>,
	Gregory Price <gourry@...rry.net>,
	Aravind Ramesh <arramesh@...ron.com>,
	Ajay Joshi <ajayjoshi@...ron.com>,
	venkataravis@...ron.com,
	linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	nvdimm@...ts.linux.dev,
	linux-cxl@...r.kernel.org,
	linux-fsdevel@...r.kernel.org,
	John Groves <john@...ves.net>
Subject: [PATCH 0/2] ndctl: Add daxctl support for the new "famfs" mode of devdax

This short series adds support and tests to daxctl for famfs[1]. The
famfs kernel patch series, under the same "compound cover" as this
series, adds a new 'fsdev_dax' driver for devdax. When that driver
is bound (instead of device_dax), the device is in 'famfs' mode rather
than 'devdax' mode.

References

[1] - https://famfs.org


John Groves (2):
  daxctl: Add support for famfs mode
  Add test/daxctl-famfs.sh to test famfs mode transitions:

 daxctl/device.c                | 126 ++++++++++++++--
 daxctl/json.c                  |   6 +-
 daxctl/lib/libdaxctl-private.h |   2 +
 daxctl/lib/libdaxctl.c         |  77 ++++++++++
 daxctl/lib/libdaxctl.sym       |   7 +
 daxctl/libdaxctl.h             |   3 +
 test/daxctl-famfs.sh           | 253 +++++++++++++++++++++++++++++++++
 test/meson.build               |   2 +
 8 files changed, 465 insertions(+), 11 deletions(-)
 create mode 100755 test/daxctl-famfs.sh


base-commit: 4f7a1c63b3305c97013d3c46daa6c0f76feff10d
-- 
2.49.0