22 files changed, 23 insertions, 152 deletions

diff --git a/lib/842/842_compress.c b/lib/842/842_compress.c
index 4051339bdfbd..c02baa4168e1 100644
--- a/lib/842/842_compress.c
+++ b/lib/842/842_compress.c
@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * 842 Software Compression
  *
  * Copyright (C) 2015 Dan Streetman, IBM Corp
  *
- * 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.
- *
  * See 842.h for details of the 842 compressed format.
  */
 
diff --git a/lib/842/842_decompress.c b/lib/842/842_decompress.c
index 11fc39b4032b..582085ef8b49 100644
--- a/lib/842/842_decompress.c
+++ b/lib/842/842_decompress.c
@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * 842 Software Decompression
  *
  * Copyright (C) 2015 Dan Streetman, IBM Corp
  *
- * 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.
- *
  * See 842.h for details of the 842 compressed format.
  */
 
diff --git a/lib/atomic64.c b/lib/atomic64.c
index 1d91e31eceec..7e6905751522 100644
--- a/lib/atomic64.c
+++ b/lib/atomic64.c
@@ -1,13 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Generic implementation of 64-bit atomics using spinlocks,
  * useful on processors that don't have 64-bit atomic instructions.
  *
  * Copyright © 2009 Paul Mackerras, IBM Corp. <paulus@au1.ibm.com>
- *
- * 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.
  */
 #include <linux/types.h>
 #include <linux/cache.h>
diff --git a/lib/atomic64_test.c b/lib/atomic64_test.c
index 62ab629f51ca..d9d170238165 100644
--- a/lib/atomic64_test.c
+++ b/lib/atomic64_test.c
@@ -1,12 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Testsuite for atomic64_t functions
  *
  * Copyright © 2010  Luca Barbieri
- *
- * 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.
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
diff --git a/lib/chacha.c b/lib/chacha.c
index a46d2832dbab..c7c9826564d3 100644
--- a/lib/chacha.c
+++ b/lib/chacha.c
@@ -1,12 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * The "hash function" used as the core of the ChaCha stream cipher (RFC7539)
  *
  * Copyright (C) 2015 Martin Willi
- *
- * 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.
  */
 
 #include <linux/kernel.h>
diff --git a/lib/checksum.c b/lib/checksum.c
index d3ec93f9e5f3..de032ad96f4a 100644
--- a/lib/checksum.c
+++ b/lib/checksum.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  *
  * INET         An implementation of the TCP/IP protocol suite for the LINUX
@@ -22,11 +23,6 @@
  *              data-registers to hold input values and one tries to
  *              specify d0 and d1 as scratch registers. Letting gcc
  *              choose these registers itself solves the problem.
- *
- *              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.
  */
 
 /* Revised by Kenneth Albanowski for m68knommu. Basic problem: unaligned access
diff --git a/lib/extable.c b/lib/extable.c
index f54996fdd0b8..25da4071122a 100644
--- a/lib/extable.c
+++ b/lib/extable.c
@@ -1,12 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Derived from arch/ppc/mm/extable.c and arch/i386/mm/extable.c.
  *
  * Copyright (C) 2004 Paul Mackerras, IBM Corp.
- *
- * 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.
  */
 
 #include <linux/bsearch.h>
diff --git a/lib/find_bit.c b/lib/find_bit.c
index ee3df93ba69a..5c51eb45178a 100644
--- a/lib/find_bit.c
+++ b/lib/find_bit.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /* bit search implementation
  *
  * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
@@ -9,11 +10,6 @@
  *
  * Rewritten by Yury Norov <yury.norov@gmail.com> to decrease
  * size and improve performance, 2015.
- *
- * 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.
  */
 
 #include <linux/bitops.h>
diff --git a/lib/irq_regs.c b/lib/irq_regs.c
index 9c0a1d70fbe8..0d545a93070e 100644
--- a/lib/irq_regs.c
+++ b/lib/irq_regs.c
@@ -1,12 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /* saved per-CPU IRQ register pointer
  *
  * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
  * Written by David Howells (dhowells@redhat.com)
- *
- * 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.
  */
 #include <linux/export.h>
 #include <linux/percpu.h>
diff --git a/lib/libcrc32c.c b/lib/libcrc32c.c
index 4e9829c4d64c..77ab839644c5 100644
--- a/lib/libcrc32c.c
+++ b/lib/libcrc32c.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /* 
  * CRC32C
  *@Article{castagnoli-crc,
@@ -23,12 +24,6 @@
  *  <endoflist>
  *
  * Copyright (c) 2004 Cisco Systems, Inc.
- * 
- * 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.
- *
  */
 
 #include <crypto/hash.h>
diff --git a/lib/list_sort.c b/lib/list_sort.c
index 06e900c5587b..712ed1f4eb64 100644
--- a/lib/list_sort.c
+++ b/lib/list_sort.c
@@ -120,7 +120,8 @@ static void merge_final(void *priv, cmp_func cmp, struct list_head *head,
  * The latter offers a chance to save a few cycles in the comparison
  * (which is used by e.g. plug_ctx_cmp() in block/blk-mq.c).
  *
- * A good way to write a multi-word comparison is
+ * A good way to write a multi-word comparison is::
+ *
  *      if (a->high != b->high)
  *              return a->high > b->high;
  *      if (a->middle != b->middle)
diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index 14d51548bea6..18c1dfbb1765 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Copyright (C) 2001 Momchil Velikov
  * Portions Copyright (C) 2001 Christoph Hellwig
@@ -6,20 +7,6 @@
  * Copyright (C) 2012 Konstantin Khlebnikov
  * Copyright (C) 2016 Intel, Matthew Wilcox
  * Copyright (C) 2016 Intel, Ross Zwisler
- *
- * 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, 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
 #include <linux/bitmap.h>
diff --git a/lib/rbtree.c b/lib/rbtree.c
index d3ff682fd4b8..1ef6e25d031c 100644
--- a/lib/rbtree.c
+++ b/lib/rbtree.c
@@ -1,22 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
   Red Black Trees
   (C) 1999  Andrea Arcangeli <andrea@suse.de>
   (C) 2002  David Woodhouse <dwmw2@infradead.org>
   (C) 2012  Michel Lespinasse <walken@google.com>
 
-  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.
-
-  You should have received a copy of the GNU General Public License
-  along with this program; if not, write to the Free Software
-  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
   linux/lib/rbtree.c
 */
diff --git a/lib/sha256.c b/lib/sha256.c
index 4400c832e2aa..d9af148d4349 100644
--- a/lib/sha256.c
+++ b/lib/sha256.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * SHA-256, as specified in
  * http://csrc.nist.gov/groups/STM/cavp/documents/shs/sha256-384-512.pdf
@@ -8,11 +9,6 @@
  * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
  * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
  * Copyright (c) 2014 Red Hat Inc.
- *
- * 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.
  */
 
 #include <linux/bitops.h>
diff --git a/lib/stackdepot.c b/lib/stackdepot.c
index 605c61f65d94..66cab785bea0 100644
--- a/lib/stackdepot.c
+++ b/lib/stackdepot.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Generic stack depot for storing stack traces.
  *
@@ -16,16 +17,6 @@
  * Copyright (C) 2016 Google, Inc.
  *
  * Based on code by Dmitry Chernenkov.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * 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.
- *
  */
 
 #include <linux/gfp.h>
diff --git a/lib/stmp_device.c b/lib/stmp_device.c
index a904656f4fd7..a4f77b6a91e3 100644
--- a/lib/stmp_device.c
+++ b/lib/stmp_device.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Copyright (C) 1999 ARM Limited
  * Copyright (C) 2000 Deep Blue Solutions Ltd
@@ -5,11 +6,6 @@
  * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
  * Copyright 2009 Ilya Yanok, Emcraft Systems Ltd, yanok@emcraft.com
  * Copyright (C) 2011 Wolfram Sang, Pengutronix e.K.
- *
- * 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.
  */
 
 #include <linux/io.h>
diff --git a/lib/textsearch.c b/lib/textsearch.c
index 5939549c0e7b..4f16eec5d554 100644
--- a/lib/textsearch.c
+++ b/lib/textsearch.c
@@ -1,11 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * lib/textsearch.c     Generic text search interface
  *
- *              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.
- *
  * Authors:     Thomas Graf <tgraf@suug.ch>
  *              Pablo Neira Ayuso <pablo@netfilter.org>
  *
diff --git a/lib/timerqueue.c b/lib/timerqueue.c
index 0d54bcbc8170..bc7e64df27df 100644
--- a/lib/timerqueue.c
+++ b/lib/timerqueue.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  *  Generic Timer-queue
  *
@@ -6,20 +7,6 @@
  *
  *  NOTE: All of the following functions need to be serialized
  *  to avoid races. No locking is done by this library code.
- *
- *  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.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #include <linux/bug.h>
diff --git a/lib/ts_bm.c b/lib/ts_bm.c
index 9e66ee4020e9..b352903c50e3 100644
--- a/lib/ts_bm.c
+++ b/lib/ts_bm.c
@@ -1,11 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * lib/ts_bm.c          Boyer-Moore text search implementation
  *
- *              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.
- *
  * Authors:     Pablo Neira Ayuso <pablo@eurodev.net>
  *
  * ==========================================================================
diff --git a/lib/ts_fsm.c b/lib/ts_fsm.c
index 69557c74ef9f..9c873cadab7c 100644
--- a/lib/ts_fsm.c
+++ b/lib/ts_fsm.c
@@ -1,11 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * lib/ts_fsm.c    A naive finite state machine text search approach
  *
- *              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.
- *
  * Authors:     Thomas Graf <tgraf@suug.ch>
  *
  * ==========================================================================
diff --git a/lib/ts_kmp.c b/lib/ts_kmp.c
index ffbe66cbb0ed..94617e014b3a 100644
--- a/lib/ts_kmp.c
+++ b/lib/ts_kmp.c
@@ -1,11 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * lib/ts_kmp.c         Knuth-Morris-Pratt text search implementation
  *
- *              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.
- *
  * Authors:     Thomas Graf <tgraf@suug.ch>
  *
  * ==========================================================================
diff --git a/lib/uuid.c b/lib/uuid.c
index 2290b9f001a9..b6a1edb61d87 100644
--- a/lib/uuid.c
+++ b/lib/uuid.c
@@ -1,17 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Unified UUID/GUID definition
  *
  * Copyright (C) 2009, 2016 Intel Corp.
  *      Huang Ying <ying.huang@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation;
- *
- * 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.
  */
 
 #include <linux/kernel.h>