linux-kernel - Re: [RFC PATCH 08/20] famfs: Add famfs

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Message-ID: <doozhoqznmwg74tc4uvmg2qwzwvga7hyoajb4naso7ptiddmvs@ysxldif4k6rn>
Date: Tue, 27 Feb 2024 08:12:57 -0600
From: John Groves <John@...ves.net>
To: Christian Brauner <brauner@...nel.org>
Cc: John Groves <jgroves@...ron.com>, Jonathan Corbet <corbet@....net>, 
	Dan Williams <dan.j.williams@...el.com>, Vishal Verma <vishal.l.verma@...el.com>, 
	Dave Jiang <dave.jiang@...el.com>, Alexander Viro <viro@...iv.linux.org.uk>, 
	Jan Kara <jack@...e.cz>, Matthew Wilcox <willy@...radead.org>, linux-cxl@...r.kernel.org, 
	linux-fsdevel@...r.kernel.org, linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, 
	nvdimm@...ts.linux.dev, john@...alactic.com, Dave Chinner <david@...morbit.com>, 
	Christoph Hellwig <hch@...radead.org>, dave.hansen@...ux.intel.com, gregory.price@...verge.com
Subject: Re: [RFC PATCH 08/20] famfs: Add famfs_internal.h

On 24/02/27 02:38PM, Christian Brauner wrote:
> On Fri, Feb 23, 2024 at 11:41:52AM -0600, John Groves wrote:
> > Add the famfs_internal.h include file. This contains internal data
> > structures such as the per-file metadata structure (famfs_file_meta)
> > and extent formats.
> > 
> > Signed-off-by: John Groves <john@...ves.net>
> > ---
> >  fs/famfs/famfs_internal.h | 53 +++++++++++++++++++++++++++++++++++++++
> 
> Already mentioned in another reply here but adding a bunch of types such
> as famfs_file_operations that aren't even defines is pretty odd. So you
> should reorder this.

Acknowledged, thanks. V2 will phase in only what is needed by the
code in each patch.

> 
> >  1 file changed, 53 insertions(+)
> >  create mode 100644 fs/famfs/famfs_internal.h
> > 
> > diff --git a/fs/famfs/famfs_internal.h b/fs/famfs/famfs_internal.h
> > new file mode 100644
> > index 000000000000..af3990d43305
> > --- /dev/null
> > +++ b/fs/famfs/famfs_internal.h
> > @@ -0,0 +1,53 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */
> > +/*
> > + * famfs - dax file system for shared fabric-attached memory
> > + *
> > + * Copyright 2023-2024 Micron Technology, Inc.
> > + *
> > + * This file system, originally based on ramfs the dax support from xfs,
> > + * is intended to allow multiple host systems to mount a common file system
> > + * view of dax files that map to shared memory.
> > + */
> > +#ifndef FAMFS_INTERNAL_H
> > +#define FAMFS_INTERNAL_H
> > +
> > +#include <linux/atomic.h>
> > +#include <linux/famfs_ioctl.h>
> > +
> > +#define FAMFS_MAGIC 0x87b282ff
> 
> That needs to go into include/uapi/linux/magic.h.

Done for v2.

Thank you,
John