 spin_lock_irq(&elv_list_lock); 
int elv_register(struct elevator_type *e){	if (elevator_find(e->elevator_name))		BUG();	spin_lock_irq(&elv_list_lock);	list_add_tail(&e->list, &elv_list);	spin_unlock_irq(&elv_list_lock);	printk(KERN_INFO "io scheduler %s registered", e->elevator_name);	if (!strcmp(e->elevator_name, chosen_elevator))		printk(" (default)");	printk("\n");	return 0;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/2824bc9328467127083c1325f54b67d298c333b2/elevator.c/clean/drivers/block/elevator.c