linux-kernel - [PATCH V3 0/2] ndctl: Add daxctl support for the new "famfs" mode of devdax

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Message-ID: <0100019bc839a307-8e2830e2-27de-403d-a938-0d4649b7d55c-000000@email.amazonses.com>
Date: Fri, 16 Jan 2026 19:12:59 +0000
From: John Groves <john@...alactic.com>
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>, 
	John Groves <jgroves@...tmail.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>, 
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Subject: [PATCH V3 0/2] ndctl: Add daxctl support for the new "famfs" mode of
 devdax

From: John Groves <john@...ves.net>

No change since V2 - gmail dropped some messages in that bundle.

No change since V1 - reposting as v2 to keep this with the related
kernel (dax and fuse) patches and libfuse patches.

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