linux-kernel - Re: [PATCH V3 21/21] famfs

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Message-ID: <2v2f3kfrbjolx3gaeo3273beah4msor6vpojusrf5ekd4rg7rf@tgnvcuxh3sgo>
Date: Sun, 11 Jan 2026 12:53:20 -0600
From: John Groves <John@...ves.net>
To: Jonathan Cameron <jonathan.cameron@...wei.com>
Cc: Miklos Szeredi <miklos@...redi.hu>, 
	Dan Williams <dan.j.williams@...el.com>, Bernd Schubert <bschubert@....com>, 
	Alison Schofield <alison.schofield@...el.com>, 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>, Stefan Hajnoczi <shajnocz@...hat.com>, 
	Joanne Koong <joannelkoong@...il.com>, Josef Bacik <josef@...icpanda.com>, 
	Bagas Sanjaya <bagasdotme@...il.com>, Chen Linxuan <chenlinxuan@...ontech.com>, 
	James Morse <james.morse@....com>, Fuad Tabba <tabba@...gle.com>, 
	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
Subject: Re: [PATCH V3 21/21] famfs_fuse: Add documentation

On 26/01/08 03:27PM, Jonathan Cameron wrote:
> On Wed,  7 Jan 2026 09:33:30 -0600
> John Groves <John@...ves.net> wrote:
> 
> > Add Documentation/filesystems/famfs.rst and update MAINTAINERS
> > 
> > Reviewed-by: Randy Dunlap <rdunlap@...radead.org>
> > Tested-by: Randy Dunlap <rdunlap@...radead.org>
> > Signed-off-by: John Groves <john@...ves.net>
> > ---
> >  Documentation/filesystems/famfs.rst | 142 ++++++++++++++++++++++++++++
> >  Documentation/filesystems/index.rst |   1 +
> >  MAINTAINERS                         |   1 +
> >  3 files changed, 144 insertions(+)
> >  create mode 100644 Documentation/filesystems/famfs.rst
> > 
> > diff --git a/Documentation/filesystems/famfs.rst b/Documentation/filesystems/famfs.rst
> > new file mode 100644
> > index 000000000000..0d3c9ba9b7a8
> > --- /dev/null
> > +++ b/Documentation/filesystems/famfs.rst
> 
> > +Principles of Operation
> > +=======================
> ....
> > +When an app accesses a data object in a famfs file, there is no page cache
> > +involvement. The CPU cache is loaded directly from the shared memory. In
> > +some use cases, this is an enormous reduction read amplification compared
> > +to loading an entire page into the page cache.
> > +
> Trivial but this double blank line seems inconsistent.
> I don't mind if it's one or two, but do the same everywhere.

This doc is identical to the the previous series, becuase I kept the Reviewed-by
and Tested-by tags from Randy. I'm happy to remove the extra blank line if he
or somebody from the doc team thinks I should.

> 
> > +
> > +Famfs is Not a Conventional File System
> > +---------------------------------------
> 
> Nice doc.
> 
> Reviewed-by: Jonathan Cameron <jonathan.cameron@...wei.com>

Thanks Jonathan!

John