Revert "Reduce memory usage when backing up many small files"

The memory usage should be reduced a fair bit by #90 so this
might not be needed anymore. Or at least not enabled by default

CHANGES

@@ -10,7 +10,6 @@ Version 0.13
 
 - Reduce file cache memory usage (#90)
 - Faster AES encryption (utilizing AES-NI when available)
-- Reduced memory usage when backing up many small files (#69)
 - Experimental Linux, OS X and FreeBSD ACL support (#66)
 - Added support for backup and restore of BSDFlags (OSX, FreeBSD) (#56)
 - Fix bug where xattrs on symlinks were not correctly restored

attic/cache.py

@@ -12,9 +12,6 @@ from .hashindex import ChunkIndex
 class Cache(object):
     """Client Side cache
     """
-    # Do not cache file metadata for files smaller than this
-    FILE_MIN_SIZE = 4096
-
     class RepositoryReplay(Error):
         """Cache is newer than repository, refusing to continue"""
 
@@ -84,9 +81,8 @@ class Cache(object):
                     break
                 u.feed(data)
                 for path_hash, item in u:
-                    if item[2] > self.FILE_MIN_SIZE:
-                        item[0] += 1
-                        self.files[path_hash] = msgpack.packb(item)
+                    item[0] += 1
+                    self.files[path_hash] = msgpack.packb(item)
 
     def begin_txn(self):
         # Initialize transaction snapshot
@@ -223,8 +219,7 @@ class Cache(object):
             return None
 
     def memorize_file(self, path_hash, st, ids):
-        if st.st_size > self.FILE_MIN_SIZE:
-            # Entry: Age, inode, size, mtime, chunk ids
-            mtime_ns = st_mtime_ns(st)
-            self.files[path_hash] = msgpack.packb((0, st.st_ino, st.st_size, mtime_ns, ids))
-            self._newest_mtime = max(self._newest_mtime, mtime_ns)
+        # Entry: Age, inode, size, mtime, chunk ids
+        mtime_ns = st_mtime_ns(st)
+        self.files[path_hash] = msgpack.packb((0, st.st_ino, st.st_size, mtime_ns, ids))
+        self._newest_mtime = max(self._newest_mtime, mtime_ns)