diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index 6289a00..661a963 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -19,6 +19,7 @@
 struct sysfs_elem_dir {
 	struct kobject		*kobj;
 
+	unsigned long		subdirs;
 	/* children rbtree starts here and goes through sd->s_rb */
 	struct rb_root		children;
 };