[PATCH] pack-objects: emit base before delta.

[Junio C Hamano <junkio@cox.net>]

This micro-optimizes the order of objects in a pack.  By
emitting base objects before deltified ones, unpack-objects do
not keep items on delta_list.

I think it is prudent to keep the add_delta_to_list() logic in
unpack-objects, so this commit only changes the packing side.

Signed-off-by: Junio C Hamano <junkio@cox.net>
---

 pack-objects.c |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

9be15981d7038f1d9d0b105f45760987584e60a6
diff --git a/pack-objects.c b/pack-objects.c
--- a/pack-objects.c
+++ b/pack-objects.c
@@ -114,11 +114,13 @@ static unsigned long write_one(struct sh
 		 * if it is written already.
 		 */
 		return offset;
-	e->offset = offset;
-	offset += write_object(f, e);
-	/* if we are delitified, write out its base object. */
+
+	/* if we are delitified, write out its base objects first */
 	if (e->delta)
 		offset = write_one(f, e->delta, offset);
+
+	e->offset = offset;
+	offset += write_object(f, e);
 	return offset;
 }
 
------------