From 4056c09114e66ce3c2368551f0122e83628750d6 Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@ppc970.osdl.org>
Date: Sat, 23 Apr 2005 19:21:28 -0700
Subject: [PATCH] Don't add parents to the commit list if we have already seen
 them.

Otherwise any merges will make the parent list explode.
---
 commit.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/commit.c b/commit.c
index 911f6435a7..0243e77cb8 100644
--- a/commit.c
+++ b/commit.c
@@ -124,8 +124,11 @@ struct commit *pop_most_recent_commit(struct commit_list **list)
 	free(old);
 
 	while (parents) {
-		parse_commit(parents->item);
-		insert_by_date(list, parents->item);
+		struct commit *commit = parents->item;
+		if (!commit->object.parsed) {
+			parse_commit(commit);
+			insert_by_date(list, commit);
+		}
 		parents = parents->next;
 	}
 	return ret;