rculist: Consolidate DEBUG_LIST for list_add_rcu()

 * This is only for internal list manipulation where we know

 * the prev/next entries already!

 */

#ifndef CONFIG_DEBUG_LIST

static inline void __list_add_rcu(struct list_head *new,

		struct list_head *prev, struct list_head *next)

{

	if (!__list_add_valid(new, prev, next))

		return;

	new->next = next;

	new->prev = prev;

	rcu_assign_pointer(list_next_rcu(prev), new);

	next->prev = new;

}

#else

void __list_add_rcu(struct list_head *new,

		    struct list_head *prev, struct list_head *next);

#endif

/**

 * list_add_rcu - add a new entry to rcu-protected list

	entry->prev = LIST_POISON2;

}

EXPORT_SYMBOL(list_del);

/*

 * RCU variants.

 */

void __list_add_rcu(struct list_head *new,

		    struct list_head *prev, struct list_head *next)

{

	WARN(next->prev != prev,

		"list_add_rcu corruption. next->prev should be prev (%p), but was %p. (next=%p).\n",

		prev, next->prev, next);

	WARN(prev->next != next,

		"list_add_rcu corruption. prev->next should be next (%p), but was %p. (prev=%p).\n",

		next, prev->next, prev);

	new->next = next;

	new->prev = prev;

	rcu_assign_pointer(list_next_rcu(prev), new);

	next->prev = new;

}

EXPORT_SYMBOL(__list_add_rcu);