127 void init_ro_spine(struct ro_spine *s, struct dm_btree_info *info)  in init_ro_spine()
135 int exit_ro_spine(struct ro_spine *s)  in exit_ro_spine()
146 int ro_step(struct ro_spine *s, dm_block_t new_child)  in ro_step()
163 void ro_pop(struct ro_spine *s)  in ro_pop()
170 struct btree_node *ro_node(struct ro_spine *s)  in ro_node()
182 void init_shadow_spine(struct shadow_spine *s, struct dm_btree_info *info)  in init_shadow_spine()
188 int exit_shadow_spine(struct shadow_spine *s)  in exit_shadow_spine()
199 int shadow_step(struct shadow_spine *s, dm_block_t b,  in shadow_step()
221 struct dm_block *shadow_current(struct shadow_spine *s)  in shadow_current()
228 struct dm_block *shadow_parent(struct shadow_spine *s)  in shadow_parent()
235 int shadow_has_parent(struct shadow_spine *s)  in shadow_has_parent()
240 int shadow_root(struct shadow_spine *s)  in shadow_root()