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-rw-r--r--mm/Kconfig1
-rw-r--r--mm/Kconfig.debug1
-rw-r--r--mm/backing-dev.c1
-rw-r--r--mm/balloon_compaction.c1
-rw-r--r--mm/cma.c6
-rw-r--r--mm/compaction.c2
-rw-r--r--mm/dmapool.c5
-rw-r--r--mm/filemap.c1
-rw-r--r--mm/gup.c16
-rw-r--r--mm/hmm.c11
-rw-r--r--mm/hugetlb.c1
-rw-r--r--mm/hwpoison-inject.c1
-rw-r--r--mm/internal.h6
-rw-r--r--mm/kasan/common.c2
-rw-r--r--mm/kmemleak-test.c14
-rw-r--r--mm/kmemleak.c15
-rw-r--r--mm/list_lru.c9
-rw-r--r--mm/maccess.c1
-rw-r--r--mm/memblock.c6
-rw-r--r--mm/memcontrol.c11
-rw-r--r--mm/memory-failure.c5
-rw-r--r--mm/memory.c1
-rw-r--r--mm/memory_hotplug.c1
-rw-r--r--mm/mempolicy.c2
-rw-r--r--mm/mm_init.c1
-rw-r--r--mm/mmap.c1
-rw-r--r--mm/nommu.c1
-rw-r--r--mm/oom_kill.c1
-rw-r--r--mm/page-writeback.c1
-rw-r--r--mm/page_alloc.c1
-rw-r--r--mm/percpu-km.c3
-rw-r--r--mm/percpu-stats.c3
-rw-r--r--mm/percpu-vm.c3
-rw-r--r--mm/percpu.c3
-rw-r--r--mm/process_vm_access.c6
-rw-r--r--mm/readahead.c1
-rw-r--r--mm/rodata_test.c6
-rw-r--r--mm/swap.c1
-rw-r--r--mm/swapfile.c1
-rw-r--r--mm/truncate.c1
-rw-r--r--mm/util.c5
-rw-r--r--mm/vmalloc.c3
-rw-r--r--mm/vmstat.c1
-rw-r--r--mm/z3fold.c12
-rw-r--r--mm/zbud.c1
-rw-r--r--mm/zpool.c1
-rw-r--r--mm/zswap.c11
47 files changed, 67 insertions, 121 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index ee8d1f311858..f0c76ba47695 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
menu "Memory Management options"
diff --git a/mm/Kconfig.debug b/mm/Kconfig.debug
index e980ceb775a4..fa6d79281368 100644
--- a/mm/Kconfig.debug
+++ b/mm/Kconfig.debug
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
config PAGE_EXTENSION
bool "Extend memmap on extra space for more information on page"
---help---
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 72e6d0c55cfa..909dae445ea7 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
#include <linux/wait.h>
#include <linux/backing-dev.h>
diff --git a/mm/balloon_compaction.c b/mm/balloon_compaction.c
index b7bd72612c5a..83a7b614061f 100644
--- a/mm/balloon_compaction.c
+++ b/mm/balloon_compaction.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* mm/balloon_compaction.c
*
diff --git a/mm/cma.c b/mm/cma.c
index 5e36d7418031..3340ef34c154 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Contiguous Memory Allocator
*
@@ -9,11 +10,6 @@
* Michal Nazarewicz <mina86@mina86.com>
* Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
* Joonsoo Kim <iamjoonsoo.kim@lge.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 optional) any later version of the license.
*/
#define pr_fmt(fmt) "cma: " fmt
diff --git a/mm/compaction.c b/mm/compaction.c
index 9febc8cc84e7..9e1b9acb116b 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -1399,7 +1399,7 @@ fast_isolate_freepages(struct compact_control *cc)
page = pfn_to_page(highest);
cc->free_pfn = highest;
} else {
- if (cc->direct_compaction) {
+ if (cc->direct_compaction && pfn_valid(min_pfn)) {
page = pfn_to_page(min_pfn);
cc->free_pfn = min_pfn;
}
diff --git a/mm/dmapool.c b/mm/dmapool.c
index 76a160083506..8c94c89a6f7e 100644
--- a/mm/dmapool.c
+++ b/mm/dmapool.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* DMA Pool allocator
*
@@ -5,10 +6,6 @@
* Copyright 2007 Intel Corporation
* Author: Matthew Wilcox <willy@linux.intel.com>
*
- * This software may be redistributed and/or modified under the terms of
- * the GNU General Public License ("GPL") version 2 as published by the
- * Free Software Foundation.
- *
* This allocator returns small blocks of a given size which are DMA-able by
* the given device. It uses the dma_alloc_coherent page allocator to get
* new pages, then splits them up into blocks of the required size.
diff --git a/mm/filemap.c b/mm/filemap.c
index c5af80c43d36..df2006ba0cfa 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/mm/filemap.c
*
diff --git a/mm/gup.c b/mm/gup.c
index 2c08248d4fa2..ddde097cf9e4 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/err.h>
@@ -1041,10 +1042,6 @@ static __always_inline long __get_user_pages_locked(struct task_struct *tsk,
BUG_ON(ret >= nr_pages);
}
- if (!pages)
- /* If it's a prefault don't insist harder */
- return ret;
-
if (ret > 0) {
nr_pages -= ret;
pages_done += ret;
@@ -1060,8 +1057,12 @@ static __always_inline long __get_user_pages_locked(struct task_struct *tsk,
pages_done = ret;
break;
}
- /* VM_FAULT_RETRY triggered, so seek to the faulting offset */
- pages += ret;
+ /*
+ * VM_FAULT_RETRY triggered, so seek to the faulting offset.
+ * For the prefault case (!pages) we only update counts.
+ */
+ if (likely(pages))
+ pages += ret;
start += ret << PAGE_SHIFT;
/*
@@ -1084,7 +1085,8 @@ static __always_inline long __get_user_pages_locked(struct task_struct *tsk,
pages_done++;
if (!nr_pages)
break;
- pages++;
+ if (likely(pages))
+ pages++;
start += PAGE_SIZE;
}
if (lock_dropped && *locked) {
diff --git a/mm/hmm.c b/mm/hmm.c
index 0db8491090b8..c5d840e34b28 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -1,16 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright 2013 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.
- *
- * 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.
- *
* Authors: Jérôme Glisse <jglisse@redhat.com>
*/
/*
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 81718c56b8f5..ac843d32b019 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Generic hugetlb support.
* (C) Nadia Yvette Chambers, April 2004
diff --git a/mm/hwpoison-inject.c b/mm/hwpoison-inject.c
index b6ac70616c32..1a7497d015b2 100644
--- a/mm/hwpoison-inject.c
+++ b/mm/hwpoison-inject.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/* Inject a hwpoison memory failure on a arbitrary pfn */
#include <linux/module.h>
#include <linux/debugfs.h>
diff --git a/mm/internal.h b/mm/internal.h
index 9eeaf2b95166..e32390802fd3 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -1,12 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/* internal.h: mm/ internal definitions
*
* Copyright (C) 2004 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.
*/
#ifndef __MM_INTERNAL_H
#define __MM_INTERNAL_H
diff --git a/mm/kasan/common.c b/mm/kasan/common.c
index 36afcf64e016..242fdc01aaa9 100644
--- a/mm/kasan/common.c
+++ b/mm/kasan/common.c
@@ -464,7 +464,7 @@ static void *__kasan_kmalloc(struct kmem_cache *cache, const void *object,
{
unsigned long redzone_start;
unsigned long redzone_end;
- u8 tag;
+ u8 tag = 0xff;
if (gfpflags_allow_blocking(flags))
quarantine_reduce();
diff --git a/mm/kmemleak-test.c b/mm/kmemleak-test.c
index dd3c23a801b1..e19279ff6aa3 100644
--- a/mm/kmemleak-test.c
+++ b/mm/kmemleak-test.c
@@ -1,21 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* mm/kmemleak-test.c
*
* Copyright (C) 2008 ARM Limited
* Written by Catalin Marinas <catalin.marinas@arm.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.
- *
- * 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
*/
#define pr_fmt(fmt) "kmemleak: " fmt
diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index e57bf810f798..9dd581d11565 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -1,23 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* mm/kmemleak.c
*
* Copyright (C) 2008 ARM Limited
* Written by Catalin Marinas <catalin.marinas@arm.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.
- *
- * 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
- *
- *
* For more information on the algorithm and kmemleak usage, please see
* Documentation/dev-tools/kmemleak.rst.
*
diff --git a/mm/list_lru.c b/mm/list_lru.c
index 0730bf8ff39f..e4709fdaa8e6 100644
--- a/mm/list_lru.c
+++ b/mm/list_lru.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2013 Red Hat, Inc. and Parallels Inc. All rights reserved.
* Authors: David Chinner and Glauber Costa
@@ -37,11 +38,7 @@ static int lru_shrinker_id(struct list_lru *lru)
static inline bool list_lru_memcg_aware(struct list_lru *lru)
{
- /*
- * This needs node 0 to be always present, even
- * in the systems supporting sparse numa ids.
- */
- return !!lru->node[0].memcg_lrus;
+ return lru->memcg_aware;
}
static inline struct list_lru_one *
@@ -451,6 +448,8 @@ static int memcg_init_list_lru(struct list_lru *lru, bool memcg_aware)
{
int i;
+ lru->memcg_aware = memcg_aware;
+
if (!memcg_aware)
return 0;
diff --git a/mm/maccess.c b/mm/maccess.c
index ec00be51a24f..482d4d670f19 100644
--- a/mm/maccess.c
+++ b/mm/maccess.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Access kernel memory without faulting.
*/
diff --git a/mm/memblock.c b/mm/memblock.c
index 6bbad46f4d2c..7d4f61ae666a 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -1,13 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Procedures for maintaining information about logical memory blocks.
*
* Peter Bergner, IBM Corp. June 2001.
* Copyright (C) 2001 Peter Bergner.
- *
- * 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/mm/memcontrol.c b/mm/memcontrol.c
index e50a2db5b4ff..ca0bc6e6be13 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/* memcontrol.c - Memory Controller
*
* Copyright IBM Corporation, 2007
@@ -19,16 +20,6 @@
* Lockless page tracking & accounting
* Unified hierarchy configuration model
* Copyright (C) 2015 Red Hat, Inc., Johannes Weiner
- *
- * 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.
*/
#include <linux/page_counter.h>
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index fc8b51744579..8da0334b9ca0 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2008, 2009 Intel Corporation
* Authors: Andi Kleen, Fengguang Wu
*
- * This software may be redistributed and/or modified under the terms of
- * the GNU General Public License ("GPL") version 2 only as published by the
- * Free Software Foundation.
- *
* High level machine check handler. Handles pages reported by the
* hardware as being corrupted usually due to a multi-bit ECC memory or cache
* failure.
diff --git a/mm/memory.c b/mm/memory.c
index 96f1d473c89a..ddf20bd0c317 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/mm/memory.c
*
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 328878b6799d..e096c987d261 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/mm/memory_hotplug.c
*
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 2219e747df49..01600d80ae01 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1,9 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Simple NUMA memory policy for the Linux kernel.
*
* Copyright 2003,2004 Andi Kleen, SuSE Labs.
* (C) Copyright 2005 Christoph Lameter, Silicon Graphics, Inc.
- * Subject to the GNU Public License, version 2.
*
* NUMA policy allows the user to give hints in which node(s) memory should
* be allocated.
diff --git a/mm/mm_init.c b/mm/mm_init.c
index 33917105a3a2..5c918388de99 100644
--- a/mm/mm_init.c
+++ b/mm/mm_init.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* mm_init.c - Memory initialisation verification and debugging
*
diff --git a/mm/mmap.c b/mm/mmap.c
index 2d6a6662edb9..7e8c3e8ae75f 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* mm/mmap.c
*
diff --git a/mm/nommu.c b/mm/nommu.c
index b492fd1fcf9f..d8c02fbe03b5 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/mm/nommu.c
*
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 539c91d0b26a..5a58778c91d4 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/mm/oom_kill.c
*
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 07656485c0e6..bdbe8b6b1225 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* mm/page-writeback.c
*
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 3b13d3914176..d66bc8abe0af 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/mm/page_alloc.c
*
diff --git a/mm/percpu-km.c b/mm/percpu-km.c
index 3a2ff5c9192c..20d2b69a13b0 100644
--- a/mm/percpu-km.c
+++ b/mm/percpu-km.c
@@ -1,11 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* mm/percpu-km.c - kernel memory based chunk allocation
*
* Copyright (C) 2010 SUSE Linux Products GmbH
* Copyright (C) 2010 Tejun Heo <tj@kernel.org>
*
- * This file is released under the GPLv2.
- *
* Chunks are allocated as a contiguous kernel memory using gfp
* allocation. This is to be used on nommu architectures.
*
diff --git a/mm/percpu-stats.c b/mm/percpu-stats.c
index ef5034a0464e..a5a8b22816ff 100644
--- a/mm/percpu-stats.c
+++ b/mm/percpu-stats.c
@@ -1,11 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* mm/percpu-debug.c
*
* Copyright (C) 2017 Facebook Inc.
* Copyright (C) 2017 Dennis Zhou <dennisz@fb.com>
*
- * This file is released under the GPLv2.
- *
* Prints statistics about the percpu allocator and backing chunks.
*/
#include <linux/debugfs.h>
diff --git a/mm/percpu-vm.c b/mm/percpu-vm.c
index d8078de912de..a2b395acef89 100644
--- a/mm/percpu-vm.c
+++ b/mm/percpu-vm.c
@@ -1,11 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* mm/percpu-vm.c - vmalloc area based chunk allocation
*
* Copyright (C) 2010 SUSE Linux Products GmbH
* Copyright (C) 2010 Tejun Heo <tj@kernel.org>
*
- * This file is released under the GPLv2.
- *
* Chunks are mapped into vmalloc areas and populated page by page.
* This is the default chunk allocator.
*/
diff --git a/mm/percpu.c b/mm/percpu.c
index 2df0ee680ea6..9821241fdede 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* mm/percpu.c - percpu memory allocator
*
@@ -7,8 +8,6 @@
* Copyright (C) 2017 Facebook Inc.
* Copyright (C) 2017 Dennis Zhou <dennisszhou@gmail.com>
*
- * This file is released under the GPLv2 license.
- *
* The percpu allocator handles both static and dynamic areas. Percpu
* areas are allocated in chunks which are divided into units. There is
* a 1-to-1 mapping for units to possible cpus. These units are grouped
diff --git a/mm/process_vm_access.c b/mm/process_vm_access.c
index a447092d4635..357aa7bef6c0 100644
--- a/mm/process_vm_access.c
+++ b/mm/process_vm_access.c
@@ -1,12 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* linux/mm/process_vm_access.c
*
* Copyright (C) 2010-2011 Christopher Yeoh <cyeoh@au1.ibm.com>, 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/mm.h>
diff --git a/mm/readahead.c b/mm/readahead.c
index a4593654a26c..2fe72cd29b47 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* mm/readahead.c - address_space-level file readahead.
*
diff --git a/mm/rodata_test.c b/mm/rodata_test.c
index d908c8769b48..5e313fa93276 100644
--- a/mm/rodata_test.c
+++ b/mm/rodata_test.c
@@ -1,13 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* rodata_test.c: functional test for mark_rodata_ro function
*
* (C) Copyright 2008 Intel Corporation
* Author: Arjan van de Ven <arjan@linux.intel.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; version 2
- * of the License.
*/
#define pr_fmt(fmt) "rodata_test: " fmt
diff --git a/mm/swap.c b/mm/swap.c
index 3a75722e68a9..7ede3eddc12a 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/mm/swap.c
*
diff --git a/mm/swapfile.c b/mm/swapfile.c
index cf63b5f01adf..596ac98051c5 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/mm/swapfile.c
*
diff --git a/mm/truncate.c b/mm/truncate.c
index b7d3c99f00c9..8563339041f6 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* mm/truncate.c - code for taking down pages from address_spaces
*
diff --git a/mm/util.c b/mm/util.c
index e2e4f8c3fa12..9834c4ab7d8e 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/string.h>
@@ -717,12 +718,12 @@ int get_cmdline(struct task_struct *task, char *buffer, int buflen)
if (!mm->arg_end)
goto out_mm; /* Shh! No looking before we're done */
- down_read(&mm->mmap_sem);
+ spin_lock(&mm->arg_lock);
arg_start = mm->arg_start;
arg_end = mm->arg_end;
env_start = mm->env_start;
env_end = mm->env_end;
- up_read(&mm->mmap_sem);
+ spin_unlock(&mm->arg_lock);
len = arg_end - arg_start;
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index c42872ed82ac..7350a124524b 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/mm/vmalloc.c
*
@@ -814,7 +815,7 @@ find_vmap_lowest_match(unsigned long size,
}
/*
- * OK. We roll back and find the fist right sub-tree,
+ * OK. We roll back and find the first right sub-tree,
* that will satisfy the search criteria. It can happen
* only once due to "vstart" restriction.
*/
diff --git a/mm/vmstat.c b/mm/vmstat.c
index a7d493366a65..fd7e16ca6996 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/mm/vmstat.c
*
diff --git a/mm/z3fold.c b/mm/z3fold.c
index 1ffecd6333e5..985732c8b025 100644
--- a/mm/z3fold.c
+++ b/mm/z3fold.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* z3fold.c
*
@@ -189,10 +190,11 @@ static int size_to_chunks(size_t size)
static void compact_page_work(struct work_struct *w);
-static inline struct z3fold_buddy_slots *alloc_slots(struct z3fold_pool *pool)
+static inline struct z3fold_buddy_slots *alloc_slots(struct z3fold_pool *pool,
+ gfp_t gfp)
{
struct z3fold_buddy_slots *slots = kmem_cache_alloc(pool->c_handle,
- GFP_KERNEL);
+ gfp);
if (slots) {
memset(slots->slot, 0, sizeof(slots->slot));
@@ -294,10 +296,10 @@ static void z3fold_unregister_migration(struct z3fold_pool *pool)
/* Initializes the z3fold header of a newly allocated z3fold page */
static struct z3fold_header *init_z3fold_page(struct page *page,
- struct z3fold_pool *pool)
+ struct z3fold_pool *pool, gfp_t gfp)
{
struct z3fold_header *zhdr = page_address(page);
- struct z3fold_buddy_slots *slots = alloc_slots(pool);
+ struct z3fold_buddy_slots *slots = alloc_slots(pool, gfp);
if (!slots)
return NULL;
@@ -911,7 +913,7 @@ retry:
if (!page)
return -ENOMEM;
- zhdr = init_z3fold_page(page, pool);
+ zhdr = init_z3fold_page(page, pool, gfp);
if (!zhdr) {
__free_page(page);
return -ENOMEM;
diff --git a/mm/zbud.c b/mm/zbud.c
index 28458f7d1e84..de5dd4ddaa82 100644
--- a/mm/zbud.c
+++ b/mm/zbud.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* zbud.c
*
diff --git a/mm/zpool.c b/mm/zpool.c
index 01a771e304fa..a2dd9107857d 100644
--- a/mm/zpool.c
+++ b/mm/zpool.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* zpool memory storage api
*
diff --git a/mm/zswap.c b/mm/zswap.c
index a4e4d36ec085..2412042f5550 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* zswap.c - zswap driver file
*
@@ -8,16 +9,6 @@
* than reading from the swap device, can also improve workload performance.
*
* Copyright (C) 2012 Seth Jennings <sjenning@linux.vnet.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.
- *
- * 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.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt