dx_map_entry
struct dx_map_entry *map_tail)
static void dx_sort_map (struct dx_map_entry *map, unsigned count)
struct dx_map_entry *p, *q, *top = map + count - 1;
struct dx_map_entry *map, int count,
struct dx_map_entry *map;
map = (struct dx_map_entry *) (data2 + blocksize);