Em Mon, 15 Jun 2020 10:48:10 -0700
Joe Perches [off-list ref] escreveu:

On Mon, 2020-06-15 at 08:50 +0200, Mauro Carvalho Chehab wrote:

quoted

- Just like some media documents, this file is dual licensed
  with GPL and GFDL. As right now the GFDL SPDX definition is
  bogus (as it doesn't tell anything about invariant parts),
  let's not use SPDX here. Let's use, instead, the same test
  as we have on media.  

[]

quoted

diff --git a/Documentation/trace/ring-buffer-design.txt b/Documentation/trace/ring-buffer-design.rst

[]
+.. Or, alternatively,
+..
+.. b) Permission is granted to copy, distribute and/or modify this
+..    document under the terms of the GNU Free Documentation License,
+..    Version 1.1 or any later version published by the Free Software
+..    Foundation, with no Invariant Sections, no Front-Cover Texts
+..    and no Back-Cover Texts. A copy of the license is available at
+..    https://www.gnu.org/licenses/old-licenses/fdl-1.2.html  

Use of a version 1.1 reference with a 1.2 link.

Right. I'll fix it.

Perhaps the link should be:
https://www.gnu.org/licenses/old-licenses/fdl-1.1.html

quoted

+..
+.. TODO: replace it to GPL-2.0 OR GFDL-1.2-or-later WITH no-invariant-sections  

Is there some reason a new GFDL entry has not yet been added
to the LICENSES directory?

Yes:

	https://github.com/spdx/license-list-XML/issues/686
	https://github.com/spdx/license-list-XML/issues/970

In summary, GFDL can either be a free or non-free license, depending
on having or not "invariant sections", but SPDX spec is incomplete on
that matter.

From the discussions, it *seems* that we'll end having a SPDX header
like: 

	GFDL-1.2-or-later-no-invariant	https://github.com/spdx/license-list-XML/milestone/12


But the discussion is still open, and so far there's no such tag.
So, we'll need to keep track at the above issues, until they finally
create the new ones.

It sounds that this is expected to happen on SPDX version 3.10:

	https://github.com/spdx/license-list-XML/milestone/12

Btw, thanks for asking. I just added some comments there, in order
to indicate what it is needed for the Linux Kernel.

Thanks,
Mauro