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authorTakashi Iwai <tiwai@suse.de>2017-11-13 15:45:57 +0100
committerTakashi Iwai <tiwai@suse.de>2017-11-13 15:45:57 +0100
commit76727c2c3bf4a5e58dff8cca23d0147ba08fb2c8 (patch)
treec84c07b9deac4425190777a962f6788d355a0dd1 /mm
parentc429bda21ffafb28f02fb2eb4055b4ab6879ed58 (diff)
parentdf6a3e245541ac61cc99f2887437e0a43dd08f2e (diff)
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Merge tag 'asoc-v4.15' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v4.15 The biggest thing this release has been the conversion of the AC98 bus to the driver model, that's been a long time coming so thanks to Robert Jarzmik for his dedication there. Due to there being some AC97 MFD there's a few fairly large changes in input and the MFD layer, mainly to the wm97xx driver. There's also some drivers/drm changes to support the new AMD Stoney platform, these are shared with the DRM subsystem and should be being merged via both. Within the subsystem the overwhelming bulk of the changes is in the Intel drivers which continue to need lots of cleanups and fixes, this release they've also gained support for their open source firmware. There's also some large changs in the core as Morimoto-san continues to mirror operations into the component level in preparation for conversion of drivers to that. - The AC97 bus has finally caught up with the driver model thanks to some dedicated and persistent work from Robert Jarzmik. - Continued work from Morimoto-san on moving us towards being able to use components for everything. - Lots of cleanups for the Intel platform code, including support for their open source audio firmware. - Support for scaling MCLK with sample rate in simple-card. - Support for AMD Stoney platform.
Diffstat (limited to 'mm')
-rw-r--r--mm/Makefile1
-rw-r--r--mm/bootmem.c1
-rw-r--r--mm/cma.h1
-rw-r--r--mm/cma_debug.c1
-rw-r--r--mm/compaction.c1
-rw-r--r--mm/debug.c1
-rw-r--r--mm/debug_page_ref.c1
-rw-r--r--mm/early_ioremap.c1
-rw-r--r--mm/fadvise.c1
-rw-r--r--mm/failslab.c1
-rw-r--r--mm/frame_vector.c1
-rw-r--r--mm/highmem.c1
-rw-r--r--mm/huge_memory.c3
-rw-r--r--mm/hugetlb.c32
-rw-r--r--mm/init-mm.c1
-rw-r--r--mm/kasan/Makefile1
-rw-r--r--mm/kasan/kasan.h1
-rw-r--r--mm/khugepaged.c1
-rw-r--r--mm/kmemcheck.c1
-rw-r--r--mm/madvise.c1
-rw-r--r--mm/mempool.c1
-rw-r--r--mm/memtest.c1
-rw-r--r--mm/migrate.c1
-rw-r--r--mm/mincore.c1
-rw-r--r--mm/mlock.c1
-rw-r--r--mm/mmzone.c1
-rw-r--r--mm/mprotect.c1
-rw-r--r--mm/mremap.c1
-rw-r--r--mm/msync.c1
-rw-r--r--mm/nobootmem.c1
-rw-r--r--mm/page_counter.c1
-rw-r--r--mm/page_ext.c1
-rw-r--r--mm/page_idle.c1
-rw-r--r--mm/page_io.c1
-rw-r--r--mm/page_isolation.c1
-rw-r--r--mm/page_owner.c1
-rw-r--r--mm/page_poison.c1
-rw-r--r--mm/page_vma_mapped.c1
-rw-r--r--mm/pagewalk.c1
-rw-r--r--mm/percpu-internal.h1
-rw-r--r--mm/pgtable-generic.c1
-rw-r--r--mm/quicklist.c1
-rw-r--r--mm/slab.c1
-rw-r--r--mm/slab.h1
-rw-r--r--mm/slab_common.c1
-rw-r--r--mm/slob.c1
-rw-r--r--mm/slub.c1
-rw-r--r--mm/sparse-vmemmap.c1
-rw-r--r--mm/sparse.c1
-rw-r--r--mm/swap_cgroup.c1
-rw-r--r--mm/swap_slots.c1
-rw-r--r--mm/swap_state.c1
-rw-r--r--mm/swapfile.c23
-rw-r--r--mm/vmacache.c1
-rw-r--r--mm/vmscan.c1
-rw-r--r--mm/workingset.c1
56 files changed, 103 insertions, 8 deletions
diff --git a/mm/Makefile b/mm/Makefile
index e3ac3aeb533b..4659b93cba43 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the linux memory manager.
#
diff --git a/mm/bootmem.c b/mm/bootmem.c
index 9fedb27c6451..6aef64254203 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* bootmem - A boot-time physical memory allocator and configurator
*
diff --git a/mm/cma.h b/mm/cma.h
index 49861286279d..33c0b517733c 100644
--- a/mm/cma.h
+++ b/mm/cma.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __MM_CMA_H__
#define __MM_CMA_H__
diff --git a/mm/cma_debug.c b/mm/cma_debug.c
index c03ccbc405a0..275df8b5b22e 100644
--- a/mm/cma_debug.c
+++ b/mm/cma_debug.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* CMA DebugFS Interface
*
diff --git a/mm/compaction.c b/mm/compaction.c
index 03d31a875341..85395dc6eb13 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* linux/mm/compaction.c
*
diff --git a/mm/debug.c b/mm/debug.c
index 5715448ab0b5..6726bec731c9 100644
--- a/mm/debug.c
+++ b/mm/debug.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* mm/debug.c
*
diff --git a/mm/debug_page_ref.c b/mm/debug_page_ref.c
index 1aef3d562e52..f3b2c9d3ece2 100644
--- a/mm/debug_page_ref.c
+++ b/mm/debug_page_ref.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/mm_types.h>
#include <linux/tracepoint.h>
diff --git a/mm/early_ioremap.c b/mm/early_ioremap.c
index b1dd4a948fc0..d04ac1ec0559 100644
--- a/mm/early_ioremap.c
+++ b/mm/early_ioremap.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Provide common bits of early_ioremap() support for architectures needing
* temporary mappings during boot before ioremap() is available.
diff --git a/mm/fadvise.c b/mm/fadvise.c
index 702f239cd6db..ec70d6e4b86d 100644
--- a/mm/fadvise.c
+++ b/mm/fadvise.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* mm/fadvise.c
*
diff --git a/mm/failslab.c b/mm/failslab.c
index b0fac98cd938..8087d976a809 100644
--- a/mm/failslab.c
+++ b/mm/failslab.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/fault-inject.h>
#include <linux/slab.h>
#include <linux/mm.h>
diff --git a/mm/frame_vector.c b/mm/frame_vector.c
index 72ebec18629c..2f98df0d460e 100644
--- a/mm/frame_vector.c
+++ b/mm/frame_vector.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/err.h>
diff --git a/mm/highmem.c b/mm/highmem.c
index 50b4ca6787f0..59db3223a5d6 100644
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* High memory handling common code and variables.
*
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 269b5df58543..1981ed697dab 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -941,6 +941,9 @@ int copy_huge_pmd(struct mm_struct *dst_mm, struct mm_struct *src_mm,
pmd = pmd_swp_mksoft_dirty(pmd);
set_pmd_at(src_mm, addr, src_pmd, pmd);
}
+ add_mm_counter(dst_mm, MM_ANONPAGES, HPAGE_PMD_NR);
+ atomic_long_inc(&dst_mm->nr_ptes);
+ pgtable_trans_huge_deposit(dst_mm, dst_pmd, pgtable);
set_pmd_at(dst_mm, addr, dst_pmd, pmd);
ret = 0;
goto out_unlock;
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 424b0ef08a60..2d2ff5e8bf2b 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -3984,6 +3984,9 @@ int hugetlb_mcopy_atomic_pte(struct mm_struct *dst_mm,
unsigned long src_addr,
struct page **pagep)
{
+ struct address_space *mapping;
+ pgoff_t idx;
+ unsigned long size;
int vm_shared = dst_vma->vm_flags & VM_SHARED;
struct hstate *h = hstate_vma(dst_vma);
pte_t _dst_pte;
@@ -4021,13 +4024,24 @@ int hugetlb_mcopy_atomic_pte(struct mm_struct *dst_mm,
__SetPageUptodate(page);
set_page_huge_active(page);
+ mapping = dst_vma->vm_file->f_mapping;
+ idx = vma_hugecache_offset(h, dst_vma, dst_addr);
+
/*
* If shared, add to page cache
*/
if (vm_shared) {
- struct address_space *mapping = dst_vma->vm_file->f_mapping;
- pgoff_t idx = vma_hugecache_offset(h, dst_vma, dst_addr);
+ size = i_size_read(mapping->host) >> huge_page_shift(h);
+ ret = -EFAULT;
+ if (idx >= size)
+ goto out_release_nounlock;
+ /*
+ * Serialization between remove_inode_hugepages() and
+ * huge_add_to_page_cache() below happens through the
+ * hugetlb_fault_mutex_table that here must be hold by
+ * the caller.
+ */
ret = huge_add_to_page_cache(page, mapping, idx);
if (ret)
goto out_release_nounlock;
@@ -4036,6 +4050,20 @@ int hugetlb_mcopy_atomic_pte(struct mm_struct *dst_mm,
ptl = huge_pte_lockptr(h, dst_mm, dst_pte);
spin_lock(ptl);
+ /*
+ * Recheck the i_size after holding PT lock to make sure not
+ * to leave any page mapped (as page_mapped()) beyond the end
+ * of the i_size (remove_inode_hugepages() is strict about
+ * enforcing that). If we bail out here, we'll also leave a
+ * page in the radix tree in the vm_shared case beyond the end
+ * of the i_size, but remove_inode_hugepages() will take care
+ * of it as soon as we drop the hugetlb_fault_mutex_table.
+ */
+ size = i_size_read(mapping->host) >> huge_page_shift(h);
+ ret = -EFAULT;
+ if (idx >= size)
+ goto out_release_unlock;
+
ret = -EEXIST;
if (!huge_pte_none(huge_ptep_get(dst_pte)))
goto out_release_unlock;
diff --git a/mm/init-mm.c b/mm/init-mm.c
index 975e49f00f34..f94d5d15ebc0 100644
--- a/mm/init-mm.c
+++ b/mm/init-mm.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/mm_types.h>
#include <linux/rbtree.h>
#include <linux/rwsem.h>
diff --git a/mm/kasan/Makefile b/mm/kasan/Makefile
index 2976a9ee104f..3289db38bc87 100644
--- a/mm/kasan/Makefile
+++ b/mm/kasan/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
KASAN_SANITIZE := n
UBSAN_SANITIZE_kasan.o := n
KCOV_INSTRUMENT := n
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h
index 1229298cce64..c70851a9a6a4 100644
--- a/mm/kasan/kasan.h
+++ b/mm/kasan/kasan.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __MM_KASAN_KASAN_H
#define __MM_KASAN_KASAN_H
diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index c01f177a1120..43cb3043311b 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/mm.h>
diff --git a/mm/kmemcheck.c b/mm/kmemcheck.c
index 2d5959c5f7c5..800d64b854ea 100644
--- a/mm/kmemcheck.c
+++ b/mm/kmemcheck.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/gfp.h>
#include <linux/mm_types.h>
#include <linux/mm.h>
diff --git a/mm/madvise.c b/mm/madvise.c
index fd70d6aabc3e..375cf32087e4 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* linux/mm/madvise.c
*
diff --git a/mm/mempool.c b/mm/mempool.c
index 1c0294858527..c4a23cdae3f0 100644
--- a/mm/mempool.c
+++ b/mm/mempool.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* linux/mm/mempool.c
*
diff --git a/mm/memtest.c b/mm/memtest.c
index 8eaa4c3a5f65..f53ace709ccd 100644
--- a/mm/memtest.c
+++ b/mm/memtest.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/init.h>
diff --git a/mm/migrate.c b/mm/migrate.c
index e00814ca390e..1236449b4777 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Memory Migration functionality - linux/mm/migrate.c
*
diff --git a/mm/mincore.c b/mm/mincore.c
index c5687c45c326..fc37afe226e6 100644
--- a/mm/mincore.c
+++ b/mm/mincore.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* linux/mm/mincore.c
*
diff --git a/mm/mlock.c b/mm/mlock.c
index dfc6f1912176..46af369c13e5 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* linux/mm/mlock.c
*
diff --git a/mm/mmzone.c b/mm/mmzone.c
index a51c0a67ea3d..4686fdc23bb9 100644
--- a/mm/mmzone.c
+++ b/mm/mmzone.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* linux/mm/mmzone.c
*
diff --git a/mm/mprotect.c b/mm/mprotect.c
index 6d3e2f082290..ec39f730a0bf 100644
--- a/mm/mprotect.c
+++ b/mm/mprotect.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* mm/mprotect.c
*
diff --git a/mm/mremap.c b/mm/mremap.c
index cfec004c4ff9..049470aa1e3e 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* mm/mremap.c
*
diff --git a/mm/msync.c b/mm/msync.c
index 24e612fefa04..ef30a429623a 100644
--- a/mm/msync.c
+++ b/mm/msync.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* linux/mm/msync.c
*
diff --git a/mm/nobootmem.c b/mm/nobootmem.c
index 3637809a18d0..9b02fda0886b 100644
--- a/mm/nobootmem.c
+++ b/mm/nobootmem.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* bootmem - A boot-time physical memory allocator and configurator
*
diff --git a/mm/page_counter.c b/mm/page_counter.c
index 7c6a63d2c27f..2a8df3ad60a4 100644
--- a/mm/page_counter.c
+++ b/mm/page_counter.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Lockless hierarchical page accounting & limiting
*
diff --git a/mm/page_ext.c b/mm/page_ext.c
index 32f18911deda..4f0367d472c4 100644
--- a/mm/page_ext.c
+++ b/mm/page_ext.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/mm.h>
#include <linux/mmzone.h>
#include <linux/bootmem.h>
diff --git a/mm/page_idle.c b/mm/page_idle.c
index 4bd03a8d809e..0a49374e6931 100644
--- a/mm/page_idle.c
+++ b/mm/page_idle.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/init.h>
#include <linux/bootmem.h>
#include <linux/fs.h>
diff --git a/mm/page_io.c b/mm/page_io.c
index 21502d341a67..5d882de3fbfd 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* linux/mm/page_io.c
*
diff --git a/mm/page_isolation.c b/mm/page_isolation.c
index 757410d9f758..44f213935bf6 100644
--- a/mm/page_isolation.c
+++ b/mm/page_isolation.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* linux/mm/page_isolation.c
*/
diff --git a/mm/page_owner.c b/mm/page_owner.c
index 57abca62d4db..4f44b95b9d1e 100644
--- a/mm/page_owner.c
+++ b/mm/page_owner.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/debugfs.h>
#include <linux/mm.h>
#include <linux/slab.h>
diff --git a/mm/page_poison.c b/mm/page_poison.c
index be19e989ccff..e83fd44867de 100644
--- a/mm/page_poison.c
+++ b/mm/page_poison.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/mm.h>
diff --git a/mm/page_vma_mapped.c b/mm/page_vma_mapped.c
index 53afbb919a1c..d22b84310f6d 100644
--- a/mm/page_vma_mapped.c
+++ b/mm/page_vma_mapped.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/mm.h>
#include <linux/rmap.h>
#include <linux/hugetlb.h>
diff --git a/mm/pagewalk.c b/mm/pagewalk.c
index 1a4197965415..8bd4afa83cb8 100644
--- a/mm/pagewalk.c
+++ b/mm/pagewalk.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/mm.h>
#include <linux/highmem.h>
#include <linux/sched.h>
diff --git a/mm/percpu-internal.h b/mm/percpu-internal.h
index 7065faf74b46..b1739dc06b73 100644
--- a/mm/percpu-internal.h
+++ b/mm/percpu-internal.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _MM_PERCPU_INTERNAL_H
#define _MM_PERCPU_INTERNAL_H
diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c
index 1175f6a24fdb..1e4ee763c190 100644
--- a/mm/pgtable-generic.c
+++ b/mm/pgtable-generic.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* mm/pgtable-generic.c
*
diff --git a/mm/quicklist.c b/mm/quicklist.c
index daf6ff6e199a..5e98ac78e410 100644
--- a/mm/quicklist.c
+++ b/mm/quicklist.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Quicklist support.
*
diff --git a/mm/slab.c b/mm/slab.c
index 04dec48c3ed7..b7095884fd93 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* linux/mm/slab.c
* Written by Mark Hemment, 1996/97.
diff --git a/mm/slab.h b/mm/slab.h
index 073362816acc..028cdc7df67e 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef MM_SLAB_H
#define MM_SLAB_H
/*
diff --git a/mm/slab_common.c b/mm/slab_common.c
index 80164599ca5d..0d7fe71ff5e4 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Slab allocator functions that are independent of the allocator strategy
*
diff --git a/mm/slob.c b/mm/slob.c
index a8bd6fa11a66..10249160b693 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* SLOB Allocator: Simple List Of Blocks
*
diff --git a/mm/slub.c b/mm/slub.c
index 163352c537ab..1efbb8123037 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* SLUB: A slab allocator that limits cache line use instead of queuing
* objects in per cpu and per node lists.
diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c
index d1a39b8051e0..478ce6d4a2c4 100644
--- a/mm/sparse-vmemmap.c
+++ b/mm/sparse-vmemmap.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Virtual Memory Map support
*
diff --git a/mm/sparse.c b/mm/sparse.c
index 83b3bf6461af..4900707ae146 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* sparse memory mappings.
*/
diff --git a/mm/swap_cgroup.c b/mm/swap_cgroup.c
index fcd2740f4ed7..45affaef3bc6 100644
--- a/mm/swap_cgroup.c
+++ b/mm/swap_cgroup.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/swap_cgroup.h>
#include <linux/vmalloc.h>
#include <linux/mm.h>
diff --git a/mm/swap_slots.c b/mm/swap_slots.c
index 13a174006b91..d81cfc5a43d5 100644
--- a/mm/swap_slots.c
+++ b/mm/swap_slots.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Manage cache of swap slots to be used for and returned from
* swap.
diff --git a/mm/swap_state.c b/mm/swap_state.c
index 05b6803f0cce..326439428daf 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* linux/mm/swap_state.c
*
diff --git a/mm/swapfile.c b/mm/swapfile.c
index bf91dc9e7a79..e47a21e64764 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -2869,6 +2869,7 @@ static struct swap_info_struct *alloc_swap_info(void)
p->flags = SWP_USED;
spin_unlock(&swap_lock);
spin_lock_init(&p->lock);
+ spin_lock_init(&p->cont_lock);
return p;
}
@@ -3545,6 +3546,7 @@ int add_swap_count_continuation(swp_entry_t entry, gfp_t gfp_mask)
head = vmalloc_to_page(si->swap_map + offset);
offset &= ~PAGE_MASK;
+ spin_lock(&si->cont_lock);
/*
* Page allocation does not initialize the page's lru field,
* but it does always reset its private field.
@@ -3564,7 +3566,7 @@ int add_swap_count_continuation(swp_entry_t entry, gfp_t gfp_mask)
* a continuation page, free our allocation and use this one.
*/
if (!(count & COUNT_CONTINUED))
- goto out;
+ goto out_unlock_cont;
map = kmap_atomic(list_page) + offset;
count = *map;
@@ -3575,11 +3577,13 @@ int add_swap_count_continuation(swp_entry_t entry, gfp_t gfp_mask)
* free our allocation and use this one.
*/
if ((count & ~COUNT_CONTINUED) != SWAP_CONT_MAX)
- goto out;
+ goto out_unlock_cont;
}
list_add_tail(&page->lru, &head->lru);
page = NULL; /* now it's attached, don't free it */
+out_unlock_cont:
+ spin_unlock(&si->cont_lock);
out:
unlock_cluster(ci);
spin_unlock(&si->lock);
@@ -3604,6 +3608,7 @@ static bool swap_count_continued(struct swap_info_struct *si,
struct page *head;
struct page *page;
unsigned char *map;
+ bool ret;
head = vmalloc_to_page(si->swap_map + offset);
if (page_private(head) != SWP_CONTINUED) {
@@ -3611,6 +3616,7 @@ static bool swap_count_continued(struct swap_info_struct *si,
return false; /* need to add count continuation */
}
+ spin_lock(&si->cont_lock);
offset &= ~PAGE_MASK;
page = list_entry(head->lru.next, struct page, lru);
map = kmap_atomic(page) + offset;
@@ -3631,8 +3637,10 @@ static bool swap_count_continued(struct swap_info_struct *si,
if (*map == SWAP_CONT_MAX) {
kunmap_atomic(map);
page = list_entry(page->lru.next, struct page, lru);
- if (page == head)
- return false; /* add count continuation */
+ if (page == head) {
+ ret = false; /* add count continuation */
+ goto out;
+ }
map = kmap_atomic(page) + offset;
init_map: *map = 0; /* we didn't zero the page */
}
@@ -3645,7 +3653,7 @@ init_map: *map = 0; /* we didn't zero the page */
kunmap_atomic(map);
page = list_entry(page->lru.prev, struct page, lru);
}
- return true; /* incremented */
+ ret = true; /* incremented */
} else { /* decrementing */
/*
@@ -3671,8 +3679,11 @@ init_map: *map = 0; /* we didn't zero the page */
kunmap_atomic(map);
page = list_entry(page->lru.prev, struct page, lru);
}
- return count == COUNT_CONTINUED;
+ ret = count == COUNT_CONTINUED;
}
+out:
+ spin_unlock(&si->cont_lock);
+ return ret;
}
/*
diff --git a/mm/vmacache.c b/mm/vmacache.c
index 7ffa0ee341b5..db7596eb6132 100644
--- a/mm/vmacache.c
+++ b/mm/vmacache.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2014 Davidlohr Bueso.
*/
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 13d711dd8776..eb2f0315b8c0 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* linux/mm/vmscan.c
*
diff --git a/mm/workingset.c b/mm/workingset.c
index 7119cd745ace..b997c9de28f6 100644
--- a/mm/workingset.c
+++ b/mm/workingset.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Workingset detection
*