diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
index 65ceeaa..74488e4 100644
--- a/include/linux/proc_fs.h
+++ b/include/linux/proc_fs.h
@@ -66,6 +66,7 @@
 	write_proc_t *write_proc;
 	atomic_t count;		/* use count */
 	int deleted;		/* delete flag */
+	void *set;
 };
 
 struct kcore_list {