1 files changed, 23 insertions, 2 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 5946e2ff9fe8..6953a5a53e44 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -285,6 +285,14 @@ static inline int is_vmalloc_addr(const void *x)
         return 0;
 #endif
 }
+#ifdef CONFIG_MMU
+extern int is_vmalloc_or_module_addr(const void *x);
+#else
+static int is_vmalloc_or_module_addr(const void *x)
+{
+        return 0;
+}
+#endif
 
 static inline struct page *compound_head(struct page *page)
 {
@@ -687,11 +695,12 @@ static inline int page_mapped(struct page *page)
 #define VM_FAULT_SIGBUS 0x0002
 #define VM_FAULT_MAJOR  0x0004
 #define VM_FAULT_WRITE  0x0008  /* Special case for get_user_pages */
+#define VM_FAULT_HWPOISON 0x0010        /* Hit poisoned page */
 
 #define VM_FAULT_NOPAGE 0x0100  /* ->fault installed the pte, not return page */
 #define VM_FAULT_LOCKED 0x0200  /* ->fault locked the returned page */
 
-#define VM_FAULT_ERROR  (VM_FAULT_OOM | VM_FAULT_SIGBUS)
+#define VM_FAULT_ERROR  (VM_FAULT_OOM | VM_FAULT_SIGBUS | VM_FAULT_HWPOISON)
 
 /*
  * Can be called by the pagefault handler when it gets a VM_FAULT_OOM.
@@ -786,6 +795,11 @@ static inline void unmap_shared_mapping_range(struct address_space *mapping,
 extern int vmtruncate(struct inode * inode, loff_t offset);
 extern int vmtruncate_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);
+
+int invalidate_inode_page(struct page *page);
+
 #ifdef CONFIG_MMU
 extern int handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma,
                         unsigned long address, unsigned int flags);
@@ -1271,7 +1285,7 @@ int in_gate_area_no_task(unsigned long addr);
 #define in_gate_area(task, addr) ({(void)task; in_gate_area_no_task(addr);})
 #endif  /* __HAVE_ARCH_GATE_AREA */
 
-int drop_caches_sysctl_handler(struct ctl_table *, int, struct file *,
+int drop_caches_sysctl_handler(struct ctl_table *, int,
                                         void __user *, size_t *, loff_t *);
 unsigned long shrink_slab(unsigned long scanned, gfp_t gfp_mask,
                         unsigned long lru_pages);
@@ -1300,5 +1314,12 @@ void vmemmap_populate_print_last(void);
 extern int account_locked_memory(struct mm_struct *mm, struct rlimit *rlim,
                                  size_t size);
 extern void refund_locked_memory(struct mm_struct *mm, size_t size);
+
+extern void memory_failure(unsigned long pfn, int trapno);
+extern int __memory_failure(unsigned long pfn, int trapno, int ref);
+extern int sysctl_memory_failure_early_kill;
+extern int sysctl_memory_failure_recovery;
+extern atomic_long_t mce_bad_pages;
+
 #endif /* __KERNEL__ */
 #endif /* _LINUX_MM_H */