1 files changed, 25 insertions, 20 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 17b27cd269c4..d8738a464b94 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -6,6 +6,7 @@
 #ifdef __KERNEL__
 
 #include <linux/gfp.h>
+#include <linux/bug.h>
 #include <linux/list.h>
 #include <linux/mmzone.h>
 #include <linux/rbtree.h>
@@ -111,7 +112,7 @@ extern unsigned int kobjsize(const void *objp);
 #define VM_HUGEPAGE     0x01000000      /* MADV_HUGEPAGE marked this vma */
 #endif
 #define VM_INSERTPAGE   0x02000000      /* The vma has had "vm_insert_page()" done on it */
-#define VM_ALWAYSDUMP   0x04000000      /* Always include in core dumps */
+#define VM_NODUMP       0x04000000      /* Do not include in the core dump */
 
 #define VM_CAN_NONLINEAR 0x08000000     /* Has ->fault & does nonlinear pages */
 #define VM_MIXEDMAP     0x10000000      /* Can contain "struct page" and pure PFN pages */
@@ -893,9 +894,9 @@ struct page *vm_normal_page(struct vm_area_struct *vma, unsigned long addr,
 
 int zap_vma_ptes(struct vm_area_struct *vma, unsigned long address,
                 unsigned long size);
-unsigned long zap_page_range(struct vm_area_struct *vma, unsigned long address,
+void zap_page_range(struct vm_area_struct *vma, unsigned long address,
                 unsigned long size, struct zap_details *);
-unsigned long unmap_vmas(struct mmu_gather *tlb,
+void unmap_vmas(struct mmu_gather *tlb,
                 struct vm_area_struct *start_vma, unsigned long start_addr,
                 unsigned long end_addr, unsigned long *nr_accounted,
                 struct zap_details *);
@@ -953,7 +954,7 @@ extern void truncate_pagecache(struct inode *inode, loff_t old, loff_t new);
 extern void truncate_setsize(struct inode *inode, loff_t newsize);
 extern int vmtruncate(struct inode *inode, loff_t offset);
 extern int vmtruncate_range(struct inode *inode, loff_t offset, loff_t end);
-
+void truncate_pagecache_range(struct inode *inode, loff_t offset, loff_t end);
 int truncate_inode_page(struct address_space *mapping, struct page *page);
 int generic_error_remove_page(struct address_space *mapping, struct page *page);
 
@@ -1040,6 +1041,9 @@ static inline int stack_guard_page_end(struct vm_area_struct *vma,
                 !vma_growsup(vma->vm_next, addr);
 }
 
+extern pid_t
+vm_is_stack(struct task_struct *task, struct vm_area_struct *vma, int in_group);
+
 extern unsigned long move_page_tables(struct vm_area_struct *vma,
                 unsigned long old_addr, struct vm_area_struct *new_vma,
                 unsigned long new_addr, unsigned long len);
@@ -1058,19 +1062,20 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write,
 /*
  * per-process(per-mm_struct) statistics.
  */
-static inline void set_mm_counter(struct mm_struct *mm, int member, long value)
-{
-        atomic_long_set(&mm->rss_stat.count[member], value);
-}
-
-#if defined(SPLIT_RSS_COUNTING)
-unsigned long get_mm_counter(struct mm_struct *mm, int member);
-#else
 static inline unsigned long get_mm_counter(struct mm_struct *mm, int member)
 {
-        return atomic_long_read(&mm->rss_stat.count[member]);
-}
+        long val = atomic_long_read(&mm->rss_stat.count[member]);
+
+#ifdef SPLIT_RSS_COUNTING
+        /*
+         * counter is updated in asynchronous manner and may go to minus.
+         * But it's never be expected number for users.
+         */
+        if (val < 0)
+                val = 0;
 #endif
+        return (unsigned long)val;
+}
 
 static inline void add_mm_counter(struct mm_struct *mm, int member, long value)
 {
@@ -1127,9 +1132,9 @@ static inline void setmax_mm_hiwater_rss(unsigned long *maxrss,
 }
 
 #if defined(SPLIT_RSS_COUNTING)
-void sync_mm_rss(struct task_struct *task, struct mm_struct *mm);
+void sync_mm_rss(struct mm_struct *mm);
 #else
-static inline void sync_mm_rss(struct task_struct *task, struct mm_struct *mm)
+static inline void sync_mm_rss(struct mm_struct *mm)
 {
 }
 #endif
@@ -1253,6 +1258,8 @@ static inline void pgtable_page_dtor(struct page *page)
 extern void free_area_init(unsigned long * zones_size);
 extern void free_area_init_node(int nid, unsigned long * zones_size,
                 unsigned long zone_start_pfn, unsigned long *zholes_size);
+extern void free_initmem(void);
+
 #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
 /*
  * With CONFIG_HAVE_MEMBLOCK_NODE_MAP set, an architecture may initialise its
@@ -1291,8 +1298,6 @@ extern void get_pfn_range_for_nid(unsigned int nid,
 extern unsigned long find_min_pfn_with_active_regions(void);
 extern void free_bootmem_with_active_regions(int nid,
                                                 unsigned long max_low_pfn);
-int add_from_early_node_map(struct range *range, int az,
-                                   int nr_range, int nid);
 extern void sparse_memory_present_with_active_regions(int nid);
 
 #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
@@ -1598,9 +1603,9 @@ void vmemmap_populate_print_last(void);
 
 enum mf_flags {
         MF_COUNT_INCREASED = 1 << 0,
+        MF_ACTION_REQUIRED = 1 << 1,
 };
-extern void memory_failure(unsigned long pfn, int trapno);
-extern int __memory_failure(unsigned long pfn, int trapno, int flags);
+extern int memory_failure(unsigned long pfn, int trapno, int flags);
 extern void memory_failure_queue(unsigned long pfn, int trapno, int flags);
 extern int unpoison_memory(unsigned long pfn);
 extern int sysctl_memory_failure_early_kill;