Re: [PATCH] xfs: Use the correct style for SPDX License Identifier

[Joe Perches]

On Mon, 2020-04-27 at 19:46 +0200, Greg Kroah-Hartman wrote:
> On Mon, Apr 27, 2020 at 10:41:58AM -0700, Joe Perches wrote:
> > On Mon, 2020-04-27 at 19:29 +0200, Greg Kroah-Hartman wrote:
> > > On Mon, Apr 27, 2020 at 08:56:18AM -0700, Darrick J. Wong wrote:
> > > > On Sat, Apr 25, 2020 at 07:05:09PM +0530, Nishad Kamdar wrote:
> > > > > This patch corrects the SPDX License Identifier style in
> > > > > header files related to XFS File System support.
> > > > > For C header files Documentation/process/license-rules.rst
> > > > > mandates C-like comments (opposed to C source files where
> > > > > C++ style should be used).
> > > > > 
> > > > > Changes made by using a script provided by Joe Perches here:
> > > > > https://lkml.org/lkml/2019/2/7/46.
> > []
> > > > > diff --git a/fs/xfs/libxfs/xfs_ag_resv.h b/fs/xfs/libxfs/xfs_ag_resv.h
> > []
> > > > > @@ -1,4 +1,4 @@
> > > > > -// SPDX-License-Identifier: GPL-2.0+
> > > > > +/* SPDX-License-Identifier: GPL-2.0+ */
> > > > 
> > > > I thought we were supposed to use 'GPL-2.0-or-newer' because 'GPL-2.0+'
> > > > is deprecated in some newer version of the SPDX standard?
> > > > 
> > > > <shrug>
> > > 
> > > The kernel follows the "older" SPDX standard, but will accept either,
> > > it's up to the author.  It is all documented in LICENSES/ if people
> > > really want to make sure.
> > 
> > I think the kernel should prefer the "newer" SPDX standard
> > for any/all changes to these lines.
> > ---
> >  LICENSES/preferred/GPL-2.0 | 8 ++++----
> >  1 file changed, 4 insertions(+), 4 deletions(-)
> > 
> > diff --git a/LICENSES/preferred/GPL-2.0 b/LICENSES/preferred/GPL-2.0
> > index ff0812..c50f93 100644
> > --- a/LICENSES/preferred/GPL-2.0
> > +++ b/LICENSES/preferred/GPL-2.0
> > @@ -8,13 +8,13 @@ Usage-Guide:
> >    tag/value pairs into a comment according to the placement
> >    guidelines in the licensing rules documentation.
> >    For 'GNU General Public License (GPL) version 2 only' use:
> > -    SPDX-License-Identifier: GPL-2.0
> > -  or
> >      SPDX-License-Identifier: GPL-2.0-only
> > +  or the deprecated alternative
> > +    SPDX-License-Identifier: GPL-2.0
> >    For 'GNU General Public License (GPL) version 2 or any later version' use:
> > -    SPDX-License-Identifier: GPL-2.0+
> > -  or
> >      SPDX-License-Identifier: GPL-2.0-or-later
> > +  or the deprecated alternative
> > +    SPDX-License-Identifier: GPL-2.0+
> >  License-Text:
> 
> At the moment, I do not, as the current ones are not "depreciated" at
> all.

https://spdx.org/licenses/

shows the GPL-2.0 and GPL-2.0+ as deprecated.

https://spdx.org/licenses/GPL-2.0.html
https://spdx.org/licenses/GPL-2.0+.html