Merge branch 'akpm' (patchbomb from Andrew Morton)

Merge incoming from Andrew Morton:
 - Various misc things.
 - arch/sh updates.
 - Part of ocfs2.  Review is slow.
 - Slab updates.
 - Most of -mm.
 - printk updates.
 - lib/ updates.
 - checkpatch updates.

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (226 commits)
  checkpatch: update $declaration_macros, add uninitialized_var
  checkpatch: warn on missing spaces in broken up quoted
  checkpatch: fix false positives for --strict "space after cast" test
  checkpatch: fix false positive MISSING_BREAK warnings with --file
  checkpatch: add test for native c90 types in unusual order
  checkpatch: add signed generic types
  checkpatch: add short int to c variable types
  checkpatch: add for_each tests to indentation and brace tests
  checkpatch: fix brace style misuses of else and while
  checkpatch: add --fix option for a couple OPEN_BRACE misuses
  checkpatch: use the correct indentation for which()
  checkpatch: add fix_insert_line and fix_delete_line helpers
  checkpatch: add ability to insert and delete lines to patch/file
  checkpatch: add an index variable for fixed lines
  checkpatch: warn on break after goto or return with same tab indentation
  checkpatch: emit a warning on file add/move/delete
  checkpatch: add test for commit id formatting style in commit log
  checkpatch: emit fewer kmalloc_array/kcalloc conversion warnings
  checkpatch: improve "no space after cast" test
  checkpatch: allow multiple const * types
  ...

30 files changed, 363 insertions, 313 deletions

diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h
index 7ad634501e48..e1c8d080c427 100644
--- a/include/linux/bitmap.h
+++ b/include/linux/bitmap.h
@@ -88,32 +88,32 @@
  * lib/bitmap.c provides these functions:
  */
 
-extern int __bitmap_empty(const unsigned long *bitmap, int bits);
-extern int __bitmap_full(const unsigned long *bitmap, int bits);
+extern int __bitmap_empty(const unsigned long *bitmap, unsigned int nbits);
+extern int __bitmap_full(const unsigned long *bitmap, unsigned int nbits);
 extern int __bitmap_equal(const unsigned long *bitmap1,
-                	const unsigned long *bitmap2, int bits);
+			  const unsigned long *bitmap2, unsigned int nbits);
 extern void __bitmap_complement(unsigned long *dst, const unsigned long *src,
-			int bits);
+			unsigned int nbits);
 extern void __bitmap_shift_right(unsigned long *dst,
                         const unsigned long *src, int shift, int bits);
 extern void __bitmap_shift_left(unsigned long *dst,
                         const unsigned long *src, int shift, int bits);
 extern int __bitmap_and(unsigned long *dst, const unsigned long *bitmap1,
-			const unsigned long *bitmap2, int bits);
+			const unsigned long *bitmap2, unsigned int nbits);
 extern void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
-			const unsigned long *bitmap2, int bits);
+			const unsigned long *bitmap2, unsigned int nbits);
 extern void __bitmap_xor(unsigned long *dst, const unsigned long *bitmap1,
-			const unsigned long *bitmap2, int bits);
+			const unsigned long *bitmap2, unsigned int nbits);
 extern int __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1,
-			const unsigned long *bitmap2, int bits);
+			const unsigned long *bitmap2, unsigned int nbits);
 extern int __bitmap_intersects(const unsigned long *bitmap1,
-			const unsigned long *bitmap2, int bits);
+			const unsigned long *bitmap2, unsigned int nbits);
 extern int __bitmap_subset(const unsigned long *bitmap1,
-			const unsigned long *bitmap2, int bits);
-extern int __bitmap_weight(const unsigned long *bitmap, int bits);
+			const unsigned long *bitmap2, unsigned int nbits);
+extern int __bitmap_weight(const unsigned long *bitmap, unsigned int nbits);
 
-extern void bitmap_set(unsigned long *map, int i, int len);
-extern void bitmap_clear(unsigned long *map, int start, int nr);
+extern void bitmap_set(unsigned long *map, unsigned int start, int len);
+extern void bitmap_clear(unsigned long *map, unsigned int start, int len);
 extern unsigned long bitmap_find_next_zero_area(unsigned long *map,
 					 unsigned long size,
 					 unsigned long start,
@@ -140,9 +140,9 @@ extern void bitmap_onto(unsigned long *dst, const unsigned long *orig,
 		const unsigned long *relmap, int bits);
 extern void bitmap_fold(unsigned long *dst, const unsigned long *orig,
 		int sz, int bits);
-extern int bitmap_find_free_region(unsigned long *bitmap, int bits, int order);
-extern void bitmap_release_region(unsigned long *bitmap, int pos, int order);
-extern int bitmap_allocate_region(unsigned long *bitmap, int pos, int order);
+extern int bitmap_find_free_region(unsigned long *bitmap, unsigned int bits, int order);
+extern void bitmap_release_region(unsigned long *bitmap, unsigned int pos, int order);
+extern int bitmap_allocate_region(unsigned long *bitmap, unsigned int pos, int order);
 extern void bitmap_copy_le(void *dst, const unsigned long *src, int nbits);
 extern int bitmap_ord_to_pos(const unsigned long *bitmap, int n, int bits);
 
@@ -188,15 +188,15 @@ static inline void bitmap_copy(unsigned long *dst, const unsigned long *src,
 }
 
 static inline int bitmap_and(unsigned long *dst, const unsigned long *src1,
-			const unsigned long *src2, int nbits)
+			const unsigned long *src2, unsigned int nbits)
 {
 	if (small_const_nbits(nbits))
-		return (*dst = *src1 & *src2) != 0;
+		return (*dst = *src1 & *src2 & BITMAP_LAST_WORD_MASK(nbits)) != 0;
 	return __bitmap_and(dst, src1, src2, nbits);
 }
 
 static inline void bitmap_or(unsigned long *dst, const unsigned long *src1,
-			const unsigned long *src2, int nbits)
+			const unsigned long *src2, unsigned int nbits)
 {
 	if (small_const_nbits(nbits))
 		*dst = *src1 | *src2;
@@ -205,7 +205,7 @@ static inline void bitmap_or(unsigned long *dst, const unsigned long *src1,
 }
 
 static inline void bitmap_xor(unsigned long *dst, const unsigned long *src1,
-			const unsigned long *src2, int nbits)
+			const unsigned long *src2, unsigned int nbits)
 {
 	if (small_const_nbits(nbits))
 		*dst = *src1 ^ *src2;
@@ -214,24 +214,24 @@ static inline void bitmap_xor(unsigned long *dst, const unsigned long *src1,
 }
 
 static inline int bitmap_andnot(unsigned long *dst, const unsigned long *src1,
-			const unsigned long *src2, int nbits)
+			const unsigned long *src2, unsigned int nbits)
 {
 	if (small_const_nbits(nbits))
-		return (*dst = *src1 & ~(*src2)) != 0;
+		return (*dst = *src1 & ~(*src2) & BITMAP_LAST_WORD_MASK(nbits)) != 0;
 	return __bitmap_andnot(dst, src1, src2, nbits);
 }
 
 static inline void bitmap_complement(unsigned long *dst, const unsigned long *src,
-			int nbits)
+			unsigned int nbits)
 {
 	if (small_const_nbits(nbits))
-		*dst = ~(*src) & BITMAP_LAST_WORD_MASK(nbits);
+		*dst = ~(*src);
 	else
 		__bitmap_complement(dst, src, nbits);
 }
 
 static inline int bitmap_equal(const unsigned long *src1,
-			const unsigned long *src2, int nbits)
+			const unsigned long *src2, unsigned int nbits)
 {
 	if (small_const_nbits(nbits))
 		return ! ((*src1 ^ *src2) & BITMAP_LAST_WORD_MASK(nbits));
@@ -240,7 +240,7 @@ static inline int bitmap_equal(const unsigned long *src1,
 }
 
 static inline int bitmap_intersects(const unsigned long *src1,
-			const unsigned long *src2, int nbits)
+			const unsigned long *src2, unsigned int nbits)
 {
 	if (small_const_nbits(nbits))
 		return ((*src1 & *src2) & BITMAP_LAST_WORD_MASK(nbits)) != 0;
@@ -249,7 +249,7 @@ static inline int bitmap_intersects(const unsigned long *src1,
 }
 
 static inline int bitmap_subset(const unsigned long *src1,
-			const unsigned long *src2, int nbits)
+			const unsigned long *src2, unsigned int nbits)
 {
 	if (small_const_nbits(nbits))
 		return ! ((*src1 & ~(*src2)) & BITMAP_LAST_WORD_MASK(nbits));
@@ -257,7 +257,7 @@ static inline int bitmap_subset(const unsigned long *src1,
 		return __bitmap_subset(src1, src2, nbits);
 }
 
-static inline int bitmap_empty(const unsigned long *src, int nbits)
+static inline int bitmap_empty(const unsigned long *src, unsigned nbits)
 {
 	if (small_const_nbits(nbits))
 		return ! (*src & BITMAP_LAST_WORD_MASK(nbits));
@@ -265,7 +265,7 @@ static inline int bitmap_empty(const unsigned long *src, int nbits)
 		return __bitmap_empty(src, nbits);
 }
 
-static inline int bitmap_full(const unsigned long *src, int nbits)
+static inline int bitmap_full(const unsigned long *src, unsigned int nbits)
 {
 	if (small_const_nbits(nbits))
 		return ! (~(*src) & BITMAP_LAST_WORD_MASK(nbits));
@@ -273,7 +273,7 @@ static inline int bitmap_full(const unsigned long *src, int nbits)
 		return __bitmap_full(src, nbits);
 }
 
-static inline int bitmap_weight(const unsigned long *src, int nbits)
+static inline int bitmap_weight(const unsigned long *src, unsigned int nbits)
 {
 	if (small_const_nbits(nbits))
 		return hweight_long(*src & BITMAP_LAST_WORD_MASK(nbits));
@@ -284,7 +284,7 @@ static inline void bitmap_shift_right(unsigned long *dst,
 			const unsigned long *src, int n, int nbits)
 {
 	if (small_const_nbits(nbits))
-		*dst = *src >> n;
+		*dst = (*src & BITMAP_LAST_WORD_MASK(nbits)) >> n;
 	else
 		__bitmap_shift_right(dst, src, n, nbits);
 }
diff --git a/include/linux/byteorder/generic.h b/include/linux/byteorder/generic.h
index 0846e6b931ce..89f67c1c3160 100644
--- a/include/linux/byteorder/generic.h
+++ b/include/linux/byteorder/generic.h
@@ -2,7 +2,7 @@
 #define _LINUX_BYTEORDER_GENERIC_H
 
 /*
- * linux/byteorder_generic.h
+ * linux/byteorder/generic.h
  * Generic Byte-reordering support
  *
  * The "... p" macros, like le64_to_cpup, can be used with pointers
diff --git a/include/linux/cma.h b/include/linux/cma.h
new file mode 100644
index 000000000000..371b93042520
--- /dev/null
+++ b/include/linux/cma.h
@@ -0,0 +1,27 @@
+#ifndef __CMA_H__
+#define __CMA_H__
+
+/*
+ * There is always at least global CMA area and a few optional
+ * areas configured in kernel .config.
+ */
+#ifdef CONFIG_CMA_AREAS
+#define MAX_CMA_AREAS	(1 + CONFIG_CMA_AREAS)
+
+#else
+#define MAX_CMA_AREAS	(0)
+
+#endif
+
+struct cma;
+
+extern phys_addr_t cma_get_base(struct cma *cma);
+extern unsigned long cma_get_size(struct cma *cma);
+
+extern int __init cma_declare_contiguous(phys_addr_t size,
+			phys_addr_t base, phys_addr_t limit,
+			phys_addr_t alignment, unsigned int order_per_bit,
+			bool fixed, struct cma **res_cma);
+extern struct page *cma_alloc(struct cma *cma, int count, unsigned int align);
+extern bool cma_release(struct cma *cma, struct page *pages, int count);
+#endif
diff --git a/include/linux/dma-contiguous.h b/include/linux/dma-contiguous.h
index 772eab5d524a..569bbd039896 100644
--- a/include/linux/dma-contiguous.h
+++ b/include/linux/dma-contiguous.h
@@ -53,18 +53,13 @@
 
 #ifdef __KERNEL__
 
+#include <linux/device.h>
+
 struct cma;
 struct page;
-struct device;
 
 #ifdef CONFIG_DMA_CMA
 
-/*
- * There is always at least global CMA area and a few optional device
- * private areas configured in kernel .config.
- */
-#define MAX_CMA_AREAS	(1 + CONFIG_CMA_AREAS)
-
 extern struct cma *dma_contiguous_default_area;
 
 static inline struct cma *dev_get_cma_area(struct device *dev)
@@ -123,8 +118,6 @@ bool dma_release_from_contiguous(struct device *dev, struct page *pages,
 
 #else
 
-#define MAX_CMA_AREAS	(0)
-
 static inline struct cma *dev_get_cma_area(struct device *dev)
 {
 	return NULL;
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 2daccaf4b547..1ab6c6913040 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2688,7 +2688,7 @@ static const struct file_operations __fops = {				\
 	.read	 = simple_attr_read,					\
 	.write	 = simple_attr_write,					\
 	.llseek	 = generic_file_llseek,					\
-};
+}
 
 static inline __printf(1, 2)
 void __simple_attr_check_format(const char *fmt, ...)
diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h
index fc7718c6bd3e..ca060d7c4fa6 100644
--- a/include/linux/fsnotify_backend.h
+++ b/include/linux/fsnotify_backend.h
@@ -322,16 +322,18 @@ extern int fsnotify_fasync(int fd, struct file *file, int on);
 extern void fsnotify_destroy_event(struct fsnotify_group *group,
 				   struct fsnotify_event *event);
 /* attach the event to the group notification queue */
-extern int fsnotify_add_notify_event(struct fsnotify_group *group,
-				     struct fsnotify_event *event,
-				     int (*merge)(struct list_head *,
-						  struct fsnotify_event *));
+extern int fsnotify_add_event(struct fsnotify_group *group,
+			      struct fsnotify_event *event,
+			      int (*merge)(struct list_head *,
+					   struct fsnotify_event *));
+/* Remove passed event from groups notification queue */
+extern void fsnotify_remove_event(struct fsnotify_group *group, struct fsnotify_event *event);
 /* true if the group notification queue is empty */
 extern bool fsnotify_notify_queue_is_empty(struct fsnotify_group *group);
 /* return, but do not dequeue the first event on the notification queue */
-extern struct fsnotify_event *fsnotify_peek_notify_event(struct fsnotify_group *group);
+extern struct fsnotify_event *fsnotify_peek_first_event(struct fsnotify_group *group);
 /* return AND dequeue the first event on the notification queue */
-extern struct fsnotify_event *fsnotify_remove_notify_event(struct fsnotify_group *group);
+extern struct fsnotify_event *fsnotify_remove_first_event(struct fsnotify_group *group);
 
 /* functions used to manipulate the marks attached to inodes */
 
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 6eb1fb37de9a..5e7219dc0fae 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -360,7 +360,7 @@ extern unsigned long get_zeroed_page(gfp_t gfp_mask);
 void *alloc_pages_exact(size_t size, gfp_t gfp_mask);
 void free_pages_exact(void *virt, size_t size);
 /* This is different from alloc_pages_exact_node !!! */
-void *alloc_pages_exact_nid(int nid, size_t size, gfp_t gfp_mask);
+void * __meminit alloc_pages_exact_nid(int nid, size_t size, gfp_t gfp_mask);
 
 #define __get_free_page(gfp_mask) \
 		__get_free_pages((gfp_mask), 0)
diff --git a/include/linux/glob.h b/include/linux/glob.h
new file mode 100644
index 000000000000..861d8347d08e
--- /dev/null
+++ b/include/linux/glob.h
@@ -0,0 +1,9 @@
+#ifndef _LINUX_GLOB_H
+#define _LINUX_GLOB_H
+
+#include <linux/types.h>	/* For bool */
+#include <linux/compiler.h>	/* For __pure */
+
+bool __pure glob_match(char const *pat, char const *str);
+
+#endif	/* _LINUX_GLOB_H */
diff --git a/include/linux/highmem.h b/include/linux/highmem.h
index 7fb31da45d03..9286a46b7d69 100644
--- a/include/linux/highmem.h
+++ b/include/linux/highmem.h
@@ -93,7 +93,7 @@ static inline int kmap_atomic_idx_push(void)
 
 #ifdef CONFIG_DEBUG_HIGHMEM
 	WARN_ON_ONCE(in_irq() && !irqs_disabled());
-	BUG_ON(idx > KM_TYPE_NR);
+	BUG_ON(idx >= KM_TYPE_NR);
 #endif
 	return idx;
 }
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index b826239bdce0..63579cb8d3dc 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -93,10 +93,6 @@ extern bool is_vma_temporary_stack(struct vm_area_struct *vma);
 #endif /* CONFIG_DEBUG_VM */
 
 extern unsigned long transparent_hugepage_flags;
-extern int copy_pte_range(struct mm_struct *dst_mm, struct mm_struct *src_mm,
-			  pmd_t *dst_pmd, pmd_t *src_pmd,
-			  struct vm_area_struct *vma,
-			  unsigned long addr, unsigned long end);
 extern int split_huge_page_to_list(struct page *page, struct list_head *list);
 static inline int split_huge_page(struct page *page)
 {
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index a23c096b3080..6e6d338641fe 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -87,7 +87,6 @@ pte_t *huge_pmd_share(struct mm_struct *mm, unsigned long addr, pud_t *pud);
 #endif
 
 extern unsigned long hugepages_treat_as_movable;
-extern const unsigned long hugetlb_zero, hugetlb_infinity;
 extern int sysctl_hugetlb_shm_group;
 extern struct list_head huge_boot_pages;
 
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index a9e2268ecccb..3dc22abbc68a 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -493,11 +493,6 @@ static inline char *hex_byte_pack_upper(char *buf, u8 byte)
 	return buf;
 }
 
-static inline char * __deprecated pack_hex_byte(char *buf, u8 byte)
-{
-	return hex_byte_pack(buf, byte);
-}
-
 extern int hex_to_bin(char ch);
 extern int __must_check hex2bin(u8 *dst, const char *src, size_t count);
 
diff --git a/include/linux/klist.h b/include/linux/klist.h
index a370ce57cf1d..61e5b723ae73 100644
--- a/include/linux/klist.h
+++ b/include/linux/klist.h
@@ -44,7 +44,7 @@ struct klist_node {
 
 extern void klist_add_tail(struct klist_node *n, struct klist *k);
 extern void klist_add_head(struct klist_node *n, struct klist *k);
-extern void klist_add_after(struct klist_node *n, struct klist_node *pos);
+extern void klist_add_behind(struct klist_node *n, struct klist_node *pos);
 extern void klist_add_before(struct klist_node *n, struct klist_node *pos);
 
 extern void klist_del(struct klist_node *n);
diff --git a/include/linux/list.h b/include/linux/list.h
index ef9594171062..cbbb96fcead9 100644
--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -654,15 +654,15 @@ static inline void hlist_add_before(struct hlist_node *n,
 	*(n->pprev) = n;
 }
 
-static inline void hlist_add_after(struct hlist_node *n,
-					struct hlist_node *next)
+static inline void hlist_add_behind(struct hlist_node *n,
+				    struct hlist_node *prev)
 {
-	next->next = n->next;
-	n->next = next;
-	next->pprev = &n->next;
+	n->next = prev->next;
+	prev->next = n;
+	n->pprev = &prev->next;
 
-	if(next->next)
-		next->next->pprev  = &next->next;
+	if (n->next)
+		n->next->pprev  = &n->next;
 }
 
 /* after that we'll appear to be on some hlist and hlist_del will work */
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index b660e05b63d4..e8cc45307f8f 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -249,7 +249,7 @@ phys_addr_t memblock_alloc(phys_addr_t size, phys_addr_t align);
 /*
  * Set the allocation direction to bottom-up or top-down.
  */
-static inline void memblock_set_bottom_up(bool enable)
+static inline void __init memblock_set_bottom_up(bool enable)
 {
 	memblock.bottom_up = enable;
 }
@@ -264,7 +264,7 @@ static inline bool memblock_bottom_up(void)
 	return memblock.bottom_up;
 }
 #else
-static inline void memblock_set_bottom_up(bool enable) {}
+static inline void __init memblock_set_bottom_up(bool enable) {}
 static inline bool memblock_bottom_up(void) { return false; }
 #endif
 
diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index 010d125bffbf..d9524c49d767 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -26,11 +26,12 @@ enum {
 	MEMORY_HOTPLUG_MAX_BOOTMEM_TYPE = NODE_INFO,
 };
 
-/* Types for control the zone type of onlined memory */
+/* Types for control the zone type of onlined and offlined memory */
 enum {
-	ONLINE_KEEP,
-	ONLINE_KERNEL,
-	ONLINE_MOVABLE,
+	MMOP_OFFLINE = -1,
+	MMOP_ONLINE_KEEP,
+	MMOP_ONLINE_KERNEL,
+	MMOP_ONLINE_MOVABLE,
 };
 
 /*
@@ -258,6 +259,7 @@ static inline void remove_memory(int nid, u64 start, u64 size) {}
 extern int walk_memory_range(unsigned long start_pfn, unsigned long end_pfn,
 		void *arg, int (*func)(struct memory_block *, void *));
 extern int add_memory(int nid, u64 start, u64 size);
+extern int zone_for_memory(int nid, u64 start, u64 size, int zone_default);
 extern int arch_add_memory(int nid, u64 start, u64 size);
 extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages);
 extern bool is_memblock_offlined(struct memory_block *mem);
diff --git a/include/linux/mmdebug.h b/include/linux/mmdebug.h
index edd82a105220..2f348d02f640 100644
--- a/include/linux/mmdebug.h
+++ b/include/linux/mmdebug.h
@@ -20,11 +20,13 @@ extern void dump_page_badflags(struct page *page, const char *reason,
 	} while (0)
 #define VM_WARN_ON(cond) WARN_ON(cond)
 #define VM_WARN_ON_ONCE(cond) WARN_ON_ONCE(cond)
+#define VM_WARN_ONCE(cond, format...) WARN_ONCE(cond, format)
 #else
 #define VM_BUG_ON(cond) BUILD_BUG_ON_INVALID(cond)
 #define VM_BUG_ON_PAGE(cond, page) VM_BUG_ON(cond)
 #define VM_WARN_ON(cond) BUILD_BUG_ON_INVALID(cond)
 #define VM_WARN_ON_ONCE(cond) BUILD_BUG_ON_INVALID(cond)
+#define VM_WARN_ONCE(cond, format...) BUILD_BUG_ON_INVALID(cond)
 #endif
 
 #ifdef CONFIG_DEBUG_VIRTUAL
diff --git a/include/linux/mmu_notifier.h b/include/linux/mmu_notifier.h
index deca87452528..27288692241e 100644
--- a/include/linux/mmu_notifier.h
+++ b/include/linux/mmu_notifier.h
@@ -170,6 +170,8 @@ extern int __mmu_notifier_register(struct mmu_notifier *mn,
 				   struct mm_struct *mm);
 extern void mmu_notifier_unregister(struct mmu_notifier *mn,
 				    struct mm_struct *mm);
+extern void mmu_notifier_unregister_no_release(struct mmu_notifier *mn,
+					       struct mm_struct *mm);
 extern void __mmu_notifier_mm_destroy(struct mm_struct *mm);
 extern void __mmu_notifier_release(struct mm_struct *mm);
 extern int __mmu_notifier_clear_flush_young(struct mm_struct *mm,
@@ -288,6 +290,10 @@ static inline void mmu_notifier_mm_destroy(struct mm_struct *mm)
 	set_pte_at(___mm, ___address, __ptep, ___pte);			\
 })
 
+extern void mmu_notifier_call_srcu(struct rcu_head *rcu,
+				   void (*func)(struct rcu_head *rcu));
+extern void mmu_notifier_synchronize(void);
+
 #else /* CONFIG_MMU_NOTIFIER */
 
 static inline void mmu_notifier_release(struct mm_struct *mm)
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 6cbd1b6c3d20..318df7051850 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -143,6 +143,7 @@ enum zone_stat_item {
 	NR_SHMEM,		/* shmem pages (included tmpfs/GEM pages) */
 	NR_DIRTIED,		/* page dirtyings since bootup */
 	NR_WRITTEN,		/* page writings since bootup */
+	NR_PAGES_SCANNED,	/* pages scanned since last reclaim */
 #ifdef CONFIG_NUMA
 	NUMA_HIT,		/* allocated in intended node */
 	NUMA_MISS,		/* allocated in non intended node */
@@ -324,19 +325,12 @@ enum zone_type {
 #ifndef __GENERATING_BOUNDS_H
 
 struct zone {
-	/* Fields commonly accessed by the page allocator */
+	/* Read-mostly fields */
 
 	/* zone watermarks, access with *_wmark_pages(zone) macros */
 	unsigned long watermark[NR_WMARK];
 
 	/*
-	 * When free pages are below this point, additional steps are taken
-	 * when reading the number of free pages to avoid per-cpu counter
-	 * drift allowing watermarks to be breached
-	 */
-	unsigned long percpu_drift_mark;
-
-	/*
 	 * We don't know if the memory that we're going to allocate will be freeable
 	 * or/and it will be released eventually, so to avoid totally wasting several
 	 * GB of ram we must reserve some of the lower zone memory (otherwise we risk
@@ -344,41 +338,26 @@ struct zone {
 	 * on the higher zones). This array is recalculated at runtime if the
 	 * sysctl_lowmem_reserve_ratio sysctl changes.
 	 */
-	unsigned long		lowmem_reserve[MAX_NR_ZONES];
-
-	/*
-	 * This is a per-zone reserve of pages that should not be
-	 * considered dirtyable memory.
-	 */
-	unsigned long		dirty_balance_reserve;
+	long lowmem_reserve[MAX_NR_ZONES];
 
 #ifdef CONFIG_NUMA
 	int node;
+#endif
+
 	/*
-	 * zone reclaim becomes active if more unmapped pages exist.
+	 * The target ratio of ACTIVE_ANON to INACTIVE_ANON pages on
+	 * this zone's LRU.  Maintained by the pageout code.
 	 */
-	unsigned long		min_unmapped_pages;
-	unsigned long		min_slab_pages;
-#endif
+	unsigned int inactive_ratio;
+
+	struct pglist_data	*zone_pgdat;
 	struct per_cpu_pageset __percpu *pageset;
+
 	/*
-	 * free areas of different sizes
+	 * This is a per-zone reserve of pages that should not be
+	 * considered dirtyable memory.
 	 */
-	spinlock_t		lock;
-#if defined CONFIG_COMPACTION || defined CONFIG_CMA
-	/* Set to true when the PG_migrate_skip bits should be cleared */
-	bool			compact_blockskip_flush;
-
-	/* pfn where compaction free scanner should start */
-	unsigned long		compact_cached_free_pfn;
-	/* pfn where async and sync compaction migration scanner should start */
-	unsigned long		compact_cached_migrate_pfn[2];
-#endif
-#ifdef CONFIG_MEMORY_HOTPLUG
-	/* see spanned/present_pages for more description */
-	seqlock_t		span_seqlock;
-#endif
-	struct free_area	free_area[MAX_ORDER];
+	unsigned long		dirty_balance_reserve;
 
 #ifndef CONFIG_SPARSEMEM
 	/*
@@ -388,74 +367,14 @@ struct zone {
 	unsigned long		*pageblock_flags;
 #endif /* CONFIG_SPARSEMEM */
 
-#ifdef CONFIG_COMPACTION
-	/*
-	 * On compaction failure, 1<<compact_defer_shift compactions
-	 * are skipped before trying again. The number attempted since
-	 * last failure is tracked with compact_considered.
-	 */
-	unsigned int		compact_considered;
-	unsigned int		compact_defer_shift;
-	int			compact_order_failed;
-#endif
-
-	ZONE_PADDING(_pad1_)
-
-	/* Fields commonly accessed by the page reclaim scanner */
-	spinlock_t		lru_lock;
-	struct lruvec		lruvec;
-
-	/* Evictions & activations on the inactive file list */
-	atomic_long_t		inactive_age;
-
-	unsigned long		pages_scanned;	   /* since last reclaim */
-	unsigned long		flags;		   /* zone flags, see below */
-
-	/* Zone statistics */
-	atomic_long_t		vm_stat[NR_VM_ZONE_STAT_ITEMS];
-
-	/*
-	 * The target ratio of ACTIVE_ANON to INACTIVE_ANON pages on
-	 * this zone's LRU.  Maintained by the pageout code.
-	 */
-	unsigned int inactive_ratio;
-
-
-	ZONE_PADDING(_pad2_)
-	/* Rarely used or read-mostly fields */
-
+#ifdef CONFIG_NUMA
 	/*
-	 * wait_table		-- the array holding the hash table
-	 * wait_table_hash_nr_entries	-- the size of the hash table array
-	 * wait_table_bits	-- wait_table_size == (1 << wait_table_bits)
-	 *
-	 * The purpose of all these is to keep track of the people
-	 * waiting for a page to become available and make them
-	 * runnable again when possible. The trouble is that this
-	 * consumes a lot of space, especially when so few things
-	 * wait on pages at a given time. So instead of using
-	 * per-page waitqueues, we use a waitqueue hash table.
-	 *
-	 * The bucket discipline is to sleep on the same queue when
-	 * colliding and wake all in that wait queue when removing.
-	 * When something wakes, it must check to be sure its page is
-	 * truly available, a la thundering herd. The cost of a
-	 * collision is great, but given the expected load of the
-	 * table, they should be so rare as to be outweighed by the
-	 * benefits from the saved space.
-	 *
-	 * __wait_on_page_locked() and unlock_page() in mm/filemap.c, are the
-	 * primary users of these fields, and in mm/page_alloc.c
-	 * free_area_init_core() performs the initialization of them.
+	 * zone reclaim becomes active if more unmapped pages exist.
 	 */
-	wait_queue_head_t	* wait_table;
-	unsigned long		wait_table_hash_nr_entries;
-	unsigned long		wait_table_bits;
+	unsigned long		min_unmapped_pages;
+	unsigned long		min_slab_pages;
+#endif /* CONFIG_NUMA */
 
-	/*
-	 * Discontig memory support fields.
-	 */
-	struct pglist_data	*zone_pgdat;
 	/* zone_start_pfn == zone_start_paddr >> PAGE_SHIFT */
 	unsigned long		zone_start_pfn;
 
@@ -500,9 +419,11 @@ struct zone {
 	 * adjust_managed_page_count() should be used instead of directly