Index: sys/kern/vfs_bio.c
===================================================================
--- sys/kern/vfs_bio.c	(revision 332165)
+++ sys/kern/vfs_bio.c	(working copy)
@@ -791,9 +791,12 @@ bufspace_daemon(void *arg)
 {
 	struct bufdomain *bd;
 
+	EVENTHANDLER_REGISTER(shutdown_pre_sync, kthread_shutdown, curthread,
+	    SHUTDOWN_PRI_LAST);
+
 	bd = arg;
 	for (;;) {
-		kproc_suspend_check(curproc);
+		kthread_suspend_check();
 
 		/*
 		 * Free buffers from the clean queue until we meet our
@@ -3357,7 +3360,7 @@ buf_daemon()
 	/*
 	 * This process needs to be suspended prior to shutdown sync.
 	 */
-	EVENTHANDLER_REGISTER(shutdown_pre_sync, kproc_shutdown, bufdaemonproc,
+	EVENTHANDLER_REGISTER(shutdown_pre_sync, kthread_shutdown, curthread,
 	    SHUTDOWN_PRI_LAST);
 
 	/*
@@ -3381,7 +3384,7 @@ buf_daemon()
 		bd_request = 0;
 		mtx_unlock(&bdlock);
 
-		kproc_suspend_check(bufdaemonproc);
+		kthread_suspend_check();
 
 		/*
 		 * Save speedupreq for this pass and reset to capture new