linux-kernel - Re: PostgreSQL licensed code on Linux

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Message-ID: <20180530000321.GP4511@wotan.suse.de>
Date:   Wed, 30 May 2018 02:03:21 +0200
From:   "Luis R. Rodriguez" <mcgrof@...nel.org>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     "Luis R. Rodriguez" <mcgrof@...nel.org>,
        Kent Overstreet <kent.overstreet@...il.com>,
        Jessica Yu <jeyu@...nel.org>, Tso Ted <tytso@....edu>,
        Coly Li <colyli@...e.de>,
        Ciaran Farrell <ciaran.farrell@...e.com>,
        One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>,
        linux-bcache@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Jonas Oberg <jonas@...e.org>
Subject: Re: PostgreSQL licensed code on Linux

On Wed, May 30, 2018 at 02:22:14AM +0300, Andy Shevchenko wrote:
> On Wed, May 30, 2018 at 2:12 AM, Luis R. Rodriguez <mcgrof@...nel.org> wrote:
> > It would seem I did follow up with a v3 patch and Rusty noted that although
> > I may be right, its hard to care [0]. But of relevance here is again if one
> > of the MODULE_LICENSE() dual tags should be used or the GPL tag. I'll
> > continue to side recommending with the MODULE_LICENSE("GPL") tag even on
> > files with permissive licenses, and even if it we haven't clarified this in
> > documentation as I think scaling these tags further is just silly.
> >
> > [0] http://lkml.kernel.org/r/87bom0hf0f.fsf@rustcorp.com.au
> 
> https://www.spinics.net/lists/linux-bcache/msg06048.html
> 
> https://www.spinics.net/lists/linux-bcache/msg06058.html

For those that are not developers:

The proposed changes referenced in the above URLs take old portions PostgreSQL
C code which were previously on a larger C file and move them to a new module
which has the PostgreSQL header. Modules need to have a MODULE_LICENSE() tag,
and if one is not used the kernel assumes the module is proprietary. The above
code lacks a MODULE_LICENSE() tag as such currently the driver is proprietary.
Clearly that needs to be fixed before upstreaming.

  Luis