Teach "git clone" to pack refs

In repos with many refs, it is unlikely that most refs will ever change.
This fact is already exploited by "git gc" by executing "git pack-refs"
to consolidate all refs into a single file.

When cloning a repo with many refs, it does not make sense to create the
loose refs in the first place, just to have the next "git gc" consolidate
them into one file. Instead, make "git clone" create the packed refs file
immediately, and forego the loose refs completely.

Signed-off-by: Johan Herland <johan@herland.net>
Acked-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin-clone.c b/builtin-clone.c
index 71909520710ab046fe04723f5a25ac9a53374025..5c5acb4bb14377f07a9d6c1a1705efeecf5bab0c 100644 (file)
--- a/builtin-clone.c
+++ b/builtin-clone.c
@@ -18,6 +18,7 @@
 #include "transport.h"
 #include "strbuf.h"
 #include "dir.h"
+#include "pack-refs.h"
 
 /*
  * Overall FIXMEs:
@@ -321,8 +322,11 @@ static struct ref *write_remote_refs(const struct ref *refs,
        get_fetch_map(refs, tag_refspec, &tail, 0);
 
        for (r = local_refs; r; r = r->next)
-               update_ref(reflog,
-                          r->peer_ref->name, r->old_sha1, NULL, 0, DIE_ON_ERR);
+               add_extra_ref(r->peer_ref->name, r->old_sha1, 0);
+
+       pack_refs(PACK_REFS_ALL);
+       clear_extra_refs();
+
        return local_refs;
 }