1 files changed, 12 insertions, 8 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index aa8de20e2e8..e8d1424153b 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -938,14 +938,18 @@ static inline unsigned long vma_pages(struct vm_area_struct *vma)
         return (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
 }
 
-extern struct vm_area_struct *find_extend_vma(struct mm_struct *mm, unsigned long addr);
-
-extern struct page * vmalloc_to_page(void *addr);
-extern unsigned long vmalloc_to_pfn(void *addr);
-extern struct page * follow_page(struct mm_struct *mm, unsigned long address,
-                int write);
-int remap_pfn_range(struct vm_area_struct *, unsigned long,
-                unsigned long, unsigned long, pgprot_t);
+struct vm_area_struct *find_extend_vma(struct mm_struct *, unsigned long addr);
+struct page *vmalloc_to_page(void *addr);
+unsigned long vmalloc_to_pfn(void *addr);
+int remap_pfn_range(struct vm_area_struct *, unsigned long addr,
+                        unsigned long pfn, unsigned long size, pgprot_t);
+
+struct page *follow_page(struct mm_struct *, unsigned long address,
+                        unsigned int foll_flags);
+#define FOLL_WRITE      0x01    /* check pte is writable */
+#define FOLL_TOUCH      0x02    /* mark page accessed */
+#define FOLL_GET        0x04    /* do get_page on page */
+#define FOLL_ANON       0x08    /* give ZERO_PAGE if no pgtable */
 
 #ifdef CONFIG_PROC_FS
 void vm_stat_account(struct mm_struct *, unsigned long, struct file *, long);