2 files changed, 12 insertions, 0 deletions

diff --git a/include/asm-generic/memory_model.h b/include/asm-generic/memory_model.h
index 30d8d33491..52226e14bd 100644
--- a/include/asm-generic/memory_model.h
+++ b/include/asm-generic/memory_model.h
@@ -46,6 +46,12 @@
          __pgdat->node_start_pfn;                                       \
 })
 
+#elif defined(CONFIG_SPARSEMEM_VMEMMAP)
+
+/* memmap is virtually contigious.  */
+#define __pfn_to_page(pfn)      (vmemmap + (pfn))
+#define __page_to_pfn(page)     ((page) - vmemmap)
+
 #elif defined(CONFIG_SPARSEMEM)
 /*
  * Note: section's mem_map is encorded to reflect its start_pfn.
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 1692dd6cb9..d216abbd05 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1218,5 +1218,11 @@ extern int randomize_va_space;
 
 const char * arch_vma_name(struct vm_area_struct *vma);
 
+struct page *sparse_early_mem_map_populate(unsigned long pnum, int nid);
+int vmemmap_populate(struct page *start_page, unsigned long pages, int node);
+int vmemmap_populate_pmd(pud_t *, unsigned long, unsigned long, int);
+void *vmemmap_alloc_block(unsigned long size, int node);
+void vmemmap_verify(pte_t *, int, unsigned long, unsigned long);
+
 #endif /* __KERNEL__ */
 #endif /* _LINUX_MM_H */