#ifndef _BCACHE_EXTENTS_H
  #define _BCACHE_EXTENTS_H
  
  extern const struct btree_keys_ops bch_btree_keys_ops;
  extern const struct btree_keys_ops bch_extent_keys_ops;
  
  struct bkey;
  struct cache_set;
  
  void bch_extent_to_text(char *, size_t, const struct bkey *);
  bool __bch_btree_ptr_invalid(struct cache_set *, const struct bkey *);
  
  #endif /* _BCACHE_EXTENTS_H */