[btr] Export btr_pool_size().

diff --git a/buffer_tree.h b/buffer_tree.h
index 9f96ef98ab400185af088e94d0183bad431b1141..2c102eeca465805c7ea7f1c68904596435bc879e 100644 (file)
--- a/buffer_tree.h
+++ b/buffer_tree.h
@@ -11,6 +11,7 @@ enum btr_node_type {
        BTR_NT_LEAF,
 };
 
+size_t btr_pool_size(struct btr_pool *btrp);
 struct btr_pool *btr_pool_new(const char *name, size_t area_size);
 void btr_pool_free(struct btr_pool *btrp);
 size_t btr_pool_get_buffer(struct btr_pool *btrp, char **result);