diff --git a/swift/obj/diskfile.py b/swift/obj/diskfile.py
index 776ede0d91..0551b5e256 100644
--- a/swift/obj/diskfile.py
+++ b/swift/obj/diskfile.py
@@ -749,10 +749,17 @@ class BaseDiskFileManager(object):
 ts_file -> path to a .ts file or None
 data_file -> path to a .data file or None
 meta_file -> path to a .meta file or None
+ ctype_file -> path to a .meta file or None
 and may contain keys:
 ts_info -> a file info dict for a .ts file
 data_info -> a file info dict for a .data file
 meta_info -> a file info dict for a .meta file
+ ctype_info -> a file info dict for a .meta file which
+ contains the content-type value
+ unexpected -> a list of file paths for unexpected
+ files
+ possible_reclaim -> a list of file info dicts for possible
+ reclaimable files
 obsolete -> a list of file info dicts for obsolete files
 """
 # Build the exts data structure:
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