179 static int top_frame(struct del_stack *s, struct frame **f)  in top_frame()
191 static int unprocessed_frames(struct del_stack *s)  in unprocessed_frames()
196 static void prefetch_children(struct del_stack *s, struct frame *f)  in prefetch_children()
210 static int push_frame(struct del_stack *s, dm_block_t b, unsigned level)  in push_frame()
254 static void pop_frame(struct del_stack *s)  in pop_frame()
262 static void unlock_all_frames(struct del_stack *s)  in unlock_all_frames()
275 	struct del_stack *s;  in dm_btree_del()  local
346 static int btree_lookup_raw(struct ro_spine *s, dm_block_t block, uint64_t key,  in btree_lookup_raw()
535 static int btree_split_sibling(struct shadow_spine *s, unsigned parent_index,  in btree_split_sibling()
623 static int btree_split_beneath(struct shadow_spine *s, uint64_t key)  in btree_split_beneath()
695 static int btree_insert_raw(struct shadow_spine *s, dm_block_t root,  in btree_insert_raw()
871 static int find_key(struct ro_spine *s, dm_block_t block, bool find_highest,  in find_key()