Oops, it's 'xxx_initcall()', not 'xxx_init()' (except for the

legacy module_init(), just to confuse people).

drivers/block/deadline-iosched.c

@@ -588,7 +588,7 @@ static int __init deadline_slab_setup(void)
 	return 0;
 }
 
-subsys_init(deadline_slab_setup);
+subsys_initcall(deadline_slab_setup);
 
 elevator_t iosched_deadline = {
 	.elevator_merge_fn = 		deadline_merge,