del_stack
static int top_frame(struct del_stack *s, struct frame **f)
static int unprocessed_frames(struct del_stack *s)
static void prefetch_children(struct del_stack *s, struct frame *f)
static int push_frame(struct del_stack *s, dm_block_t b, unsigned int level)
static void pop_frame(struct del_stack *s)
static void unlock_all_frames(struct del_stack *s)
struct del_stack *s;