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Date:   Fri, 12 May 2023 17:45:18 -0700
From:   Eric Biggers <ebiggers@kernel.org>
To:     Kent Overstreet <kent.overstreet@linux.dev>
Cc:     Randy Dunlap <rdunlap@infradead.org>,
        Jan Engelhardt <jengelh@inai.de>, linux-kernel@vger.kernel.org,
        linux-fsdevel@vger.kernel.org, linux-bcachefs@vger.kernel.org,
        Kent Overstreet <kent.overstreet@gmail.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>, Will Deacon <will@kernel.org>,
        Waiman Long <longman@redhat.com>,
        Boqun Feng <boqun.feng@gmail.com>
Subject: Re: [PATCH 04/32] locking: SIX locks (shared/intent/exclusive)
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On Fri, May 12, 2023 at 08:17:23PM -0400, Kent Overstreet wrote:
> On Fri, May 12, 2023 at 04:49:04PM -0700, Randy Dunlap wrote:
> > 
> > 
> > On 5/12/23 16:26, Kent Overstreet wrote:
> > > On Sat, May 13, 2023 at 12:39:34AM +0200, Jan Engelhardt wrote:
> > >>
> > >> On Friday 2023-05-12 22:58, Kent Overstreet wrote:
> > >>> On Thu, May 11, 2023 at 02:14:08PM +0200, Jan Engelhardt wrote:
> > >>>>> +// SPDX-License-Identifier: GPL-2.0
> > >>>>
> > >>>> The currently SPDX list only knows "GPL-2.0-only" or "GPL-2.0-or-later",
> > >>>> please edit.
> > >>>
> > >>> Where is that list?
> > >>
> > >> I just went to spdx.org and then chose "License List" from the
> > >> horizontal top bar menu.
> > > 
> > > Do we have anything more official? Quick grep through the source tree
> > > says I'm following accepted usage.
> > 
> > Documentation/process/license-rules.rst points to spdx.org for
> > further info.
> > 
> > or LICENSES/preferred/GPL-2.0 contains this:
> > Valid-License-Identifier: GPL-2.0
> > Valid-License-Identifier: GPL-2.0-only
> > Valid-License-Identifier: GPL-2.0+
> > Valid-License-Identifier: GPL-2.0-or-later
> > SPDX-URL: https://spdx.org/licenses/GPL-2.0.html
> 
> Thanks, I'll leave it at GPL-2.0 then.

https://spdx.org/licenses/GPL-2.0.html says that GPL-2.0 is deprecated.  Its
replacement is https://spdx.org/licenses/GPL-2.0-only.html.  Yes, they mean the
same thing, but the new names were introduced to be clearer than the old ones.

- Eric