extern struct btree_geo btree_geo128;

struct btree_head128 { struct btree_head h; };

static inline void btree_init_mempool128(struct btree_head128 *head,
mempool_t *mempool)
{
btree_init_mempool(&head->h, mempool);
}

static inline int btree_init128(struct btree_head128 *head)
{
return btree_init(&head->h);
}

static inline void btree_destroy128(struct btree_head128 *head)
{
btree_destroy(&head->h);
}

static inline void *btree_lookup128(struct btree_head128 *head, u64 k1, u64 k2)
{
u64 key[2] = {k1, k2};
return btree_lookup(&head->h, &btree_geo128, (unsigned long *)&key);
}

static inline void *btree_get_prev128(struct btree_head128 *head,
u64 *k1, u64 *k2)
{
u64 key[2] = {*k1, *k2};
void *val;

val = btree_get_prev(&head->h, &btree_geo128,
(unsigned long *)&key);
*k1 = key[0];
*k2 = key[1];
return val;
}

static inline int btree_insert128(struct btree_head128 *head, u64 k1, u64 k2,
void *val, gfp_t gfp)
{
u64 key[2] = {k1, k2};
return btree_insert(&head->h, &btree_geo128,
(unsigned long *)&key, val, gfp);
}

static inline int btree_update128(struct btree_head128 *head, u64 k1, u64 k2,
void *val)
{
u64 key[2] = {k1, k2};
return btree_update(&head->h, &btree_geo128,
(unsigned long *)&key, val);
}

static inline void *btree_remove128(struct btree_head128 *head, u64 k1, u64 k2)
{
u64 key[2] = {k1, k2};
return btree_remove(&head->h, &btree_geo128, (unsigned long *)&key);
}

static inline void *btree_last128(struct btree_head128 *head, u64 *k1, u64 *k2)
{
u64 key[2];
void *val;

val = btree_last(&head->h, &btree_geo128, (unsigned long *)&key[0]);
if (val) {
*k1 = key[0];
*k2 = key[1];
}

return val;
}

static inline int btree_merge128(struct btree_head128 *target,
struct btree_head128 *victim,
gfp_t gfp)
{
return btree_merge(&target->h, &victim->h, &btree_geo128, gfp);
}

void visitor128(void *elem, unsigned long opaque, unsigned long *__key,
size_t index, void *__func);

typedef void (*visitor128_t)(void *elem, unsigned long opaque,
u64 key1, u64 key2, size_t index);

static inline size_t btree_visitor128(struct btree_head128 *head,
unsigned long opaque,
visitor128_t func2)
{
return btree_visitor(&head->h, &btree_geo128, opaque,
visitor128, func2);
}

static inline size_t btree_grim_visitor128(struct btree_head128 *head,
unsigned long opaque,
visitor128_t func2)
{
return btree_grim_visitor(&head->h, &btree_geo128, opaque,
visitor128, func2);
}

#define btree_for_each_safe128(head, k1, k2, val) \
for (val = btree_last128(head, &k1, &k2); \
val; \
val = btree_get_prev128(head, &k1, &k2))