On Tue, Jun 25, 2019 at 08:54:30AM -0400, Josef Bacik wrote:
> On Tue, Jun 25, 2019 at 01:58:43PM +0200, David Sterba wrote:
> > On Tue, Jun 18, 2019 at 04:09:19PM -0400, Josef Bacik wrote:
> > > --- /dev/null
> > > +++ b/fs/btrfs/space-info.c
> > > @@ -0,0 +1,177 @@
> > > +/* SPDX-License-Identifier: GPL-2.0 */
> > > +/*
> > > + * Copyright (C) 2019 Facebook.  All rights reserved.
> > > + */
> > 
> > How does the copyright claim work here? You're just moving code from a
> > file (extent-tree.c) that has
> > 
> >   "Copyright (C) 2007 Oracle.  All rights reserved."
> > 
> > Adding company copyright to new files that implement something
> > completely new seems to be fine and I don't object against adding it,
> > though personally I think it's pointless to add the copyrights when
> > there's the Signed-off-by mechanism and full and immutable history of
> > changes tracked in git and newly the SPDX tag to disperse any confusion
> > about licensing of individual files.
> > 
> 
> Yeah I agree, fix it however you like, the signed-off chain seems to be what's
> important.  Thanks,

Thanks, I've summarized that on wiki so we can point to that when
needed.

https://btrfs.wiki.kernel.org/index.php/Developer%27s_FAQ#Copyright_notices_in_files

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