Talk about <read-cache.c> and <cache-tree.c>, things like:

  • cache → the_index macros

  • read_index()

  • write_index()

  • ie_match_stat() and ie_modified(); how they are different and when to use which.

  • index_name_pos()

  • remove_index_entry_at()

  • remove_file_from_index()

  • add_file_to_index()

  • add_index_entry()

  • refresh_index()

  • discard_index()

  • cache_tree_invalidate_path()

  • cache_tree_update()

(JC, Linus)