1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 77a76101dcd9..a0eec16eb0bd 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -637,6 +637,7 @@ static inline int page_mapped(struct page *page)
  */
 #define NOPFN_SIGBUS    ((unsigned long) -1)
 #define NOPFN_OOM       ((unsigned long) -2)
+#define NOPFN_REFAULT   ((unsigned long) -3)
 
 /*
  * Different kinds of faults, as returned by handle_mm_fault().
@@ -1124,6 +1125,8 @@ 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);
 int vm_insert_page(struct vm_area_struct *, unsigned long addr, struct page *);
+int vm_insert_pfn(struct vm_area_struct *vma, unsigned long addr,
+                        unsigned long pfn);
 
 struct page *follow_page(struct vm_area_struct *, unsigned long address,
                         unsigned int foll_flags);