btree_init_mempool    9 include/linux/btree-128.h 	btree_init_mempool(&head->h, mempool);
btree_init_mempool   17 include/linux/btree-type.h 	btree_init_mempool(&head->h, mempool);
btree_init_mempool   67 include/linux/btree.h void btree_init_mempool(struct btree_head *head, mempool_t *mempool);
btree_init_mempool  187 lib/btree.c    EXPORT_SYMBOL_GPL(btree_init_mempool);