Move "void *util" from "struct object" into "struct commit"

Every single user actually wanted this only for commit objects, and we
have no reason to waste space on it for other object types. So just move
the structure member from the low-level "struct object" into the "struct
commit".

This leaves the commit object the same size, and removes one unnecessary
pointer from all other object allocations.

This shrinks memory usage (still at a fairly hefty half-gig, admittedly)
of "git-rev-list --all --objects" on the mozilla repo by another 5% in my
tests.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 0 insertions, 1 deletions

diff --git a/object.h b/object.h
index a0762b6672..f4ee2e55ba 100644
--- a/object.h
+++ b/object.h
@@ -29,7 +29,6 @@ struct object {
 	unsigned flags : FLAG_BITS;
 	unsigned char sha1[20];
 	struct object_refs *refs;
-	void *util;
 };
 
 extern int track_object_refs;