Matthew, On Tue, Dec 19, 2017 at 1:17 PM, Wei Wang <wei.w.wang@xxxxxxxxx> wrote: > From: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx> > > The eXtensible Bitmap is a sparse bitmap representation which is > efficient for set bits which tend to cluster. It supports up to > 'unsigned long' worth of bits, and this commit adds the bare bones -- > xb_set_bit(), xb_clear_bit() and xb_test_bit(). <snip> > --- /dev/null > +++ b/include/linux/xbitmap.h > @@ -0,0 +1,49 @@ > +/* > + * eXtensible Bitmaps > + * Copyright (c) 2017 Microsoft Corporation <mawilcox@xxxxxxxxxxxxx> > + * > + * This program is free software; you can redistribute it and/or > + * modify it under the terms of the GNU General Public License as > + * published by the Free Software Foundation; either version 2 of the > + * License, or (at your option) any later version. > + * > + * This program is distributed in the hope that it will be useful, > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > + * GNU General Public License for more details. > + * > + * eXtensible Bitmaps provide an unlimited-size sparse bitmap facility. > + * All bits are initially zero. > + */ Would you mind using the new SPDX tags documented in Thomas patch set [1] rather than this fine but longer legalese? And if you could spread the word to others in your team this would be very nice. Thank you! [1] https://lkml.org/lkml/2017/12/4/934 -- Cordially Philippe Ombredanne
