diff --git a/include/linux/fs.h b/include/linux/fs.h
index a79f483..beb0e27 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2086,6 +2086,8 @@
 extern int filemap_fdatawrite(struct address_space *);
 extern int filemap_flush(struct address_space *);
 extern int filemap_fdatawait(struct address_space *);
+extern int filemap_fdatawait_range(struct address_space *, loff_t lstart,
+				   loff_t lend);
 extern int filemap_write_and_wait(struct address_space *mapping);
 extern int filemap_write_and_wait_range(struct address_space *mapping,
 				        loff_t lstart, loff_t lend);