diff --git a/include/linux/fs.h b/include/linux/fs.h
index d8e2762..f9d2aab 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1729,6 +1729,8 @@
 extern int invalidate_inode_pages2(struct address_space *mapping);
 extern int invalidate_inode_pages2_range(struct address_space *mapping,
 					 pgoff_t start, pgoff_t end);
+extern void generic_sync_sb_inodes(struct super_block *sb,
+				struct writeback_control *wbc);
 extern int write_inode_now(struct inode *, int);
 extern int filemap_fdatawrite(struct address_space *);
 extern int filemap_flush(struct address_space *);