pack-objects: refactor code into compute_layer_order()

diff --git a/packfile.h b/packfile.h
index e0a38aba9321deae1d64aea7cd87067fde240b10..cc7eaffe1baef8accc1476c92145b7c4bcdcf046 100644 (file)
--- a/packfile.h
+++ b/packfile.h
@@ -3,6 +3,11 @@
 
 #include "oidset.h"
 
+/* in object-store.h */
+struct packed_git;
+struct object_info;
+enum object_type;
+
 /*
  * Generate the filename to be used for a pack file with checksum "sha1" and
  * extension "ext". The result is written into the strbuf "buf", overwriting