--- zzzz-none-000/linux-4.9.218/include/linux/async.h	2020-04-02 15:20:41.000000000 +0000
+++ seale-7590ax-750/linux-4.9.218/include/linux/async.h	2023-03-29 10:59:07.000000000 +0000
@@ -14,6 +14,7 @@
 
 #include <linux/types.h>
 #include <linux/list.h>
+#include <linux/workqueue.h>
 
 typedef u64 async_cookie_t;
 typedef void (*async_func_t) (void *data, async_cookie_t cookie);
@@ -22,6 +23,19 @@
 	unsigned registered:1;
 };
 
+extern struct list_head async_global_pending;
+extern spinlock_t async_lock;
+
+struct async_entry {
+	struct list_head	domain_list;
+	struct list_head	global_list;
+	struct work_struct	work;
+	async_cookie_t		cookie;
+	async_func_t		func;
+	void			*data;
+	struct async_domain	*domain;
+};
+
 /*
  * domain participates in global async_synchronize_full
  */