Index: sys/kern/vfs_mountroot.c
===================================================================
--- sys/kern/vfs_mountroot.c
+++ sys/kern/vfs_mountroot.c
@@ -166,9 +166,6 @@
 {
 	struct root_hold_token *h;
 
-	if (root_mounted())
-		return (NULL);
-
 	h = malloc(sizeof *h, M_DEVBUF, M_ZERO | M_WAITOK);
 	h->who = identifier;
 	mtx_lock(&root_holds_mtx);