1 files changed, 11 insertions, 1 deletions

diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index f5096b58b20d..f015c059e159 100644
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -55,7 +55,8 @@ extern int migrate_huge_page_move_mapping(struct address_space *mapping,
                                   struct page *newpage, struct page *page);
 extern int migrate_page_move_mapping(struct address_space *mapping,
                 struct page *newpage, struct page *page,
-                struct buffer_head *head, enum migrate_mode mode);
+                struct buffer_head *head, enum migrate_mode mode,
+                int extra_count);
 #else
 
 static inline void putback_lru_pages(struct list_head *l) {}
@@ -90,10 +91,19 @@ static inline int migrate_huge_page_move_mapping(struct address_space *mapping,
 #endif /* CONFIG_MIGRATION */
 
 #ifdef CONFIG_NUMA_BALANCING
+extern bool pmd_trans_migrating(pmd_t pmd);
+extern void wait_migrate_huge_page(struct anon_vma *anon_vma, pmd_t *pmd);
 extern int migrate_misplaced_page(struct page *page,
                                   struct vm_area_struct *vma, int node);
 extern bool migrate_ratelimited(int node);
 #else
+static inline bool pmd_trans_migrating(pmd_t pmd)
+{
+        return false;
+}
+static inline void wait_migrate_huge_page(struct anon_vma *anon_vma, pmd_t *pmd)
+{
+}
 static inline int migrate_misplaced_page(struct page *page,
                                          struct vm_area_struct *vma, int node)
 {