revision: insert unsorted, then sort in prepare_revision_walk()

diff --git a/commit.c b/commit.c
index b9ce569442cdaf6fc401901427bfac5727f9739a..0759b2ca655d8d5839fe46cba477135414d0826c 100644 (file)
--- a/commit.c
+++ b/commit.c
@@ -361,6 +361,21 @@ struct commit_list *commit_list_insert(struct commit *item, struct commit_list *
        return new_list;
 }
 
+void commit_list_reverse(struct commit_list **list_p)
+{
+       struct commit_list *prev = NULL, *curr = *list_p, *next;
+
+       if (!list_p)
+               return;
+       while (curr) {
+               next = curr->next;
+               curr->next = prev;
+               prev = curr;
+               curr = next;
+       }
+       *list_p = prev;
+}
+
 unsigned commit_list_count(const struct commit_list *l)
 {
        unsigned c = 0;