Merge branch 'ds/topo-traversal-using-commit-graph'

Prepare use of reachability index in topological walker that works
on a range (A..B).

* ds/topo-traversal-using-commit-graph:
  revision: keep topo-walk free of unintersting commits
  revision: use generation for A..B --topo-order queries

revision.c

@@ -436,7 +436,9 @@ static struct commit *handle_commit(struct rev_info *revs,
 			die("unable to parse commit %s", name);
 		if (flags & UNINTERESTING) {
 			mark_parents_uninteresting(commit);
-			revs->limited = 1;
+
+			if (!revs->topo_order || !generation_numbers_enabled(the_repository))
+				revs->limited = 1;
 		}
 		if (revs->sources) {
 			char **slot = revision_sources_at(revs->sources, commit);
@@ -3263,6 +3265,9 @@ static void expand_topo_walk(struct rev_info *revs, struct commit *commit)
 		struct commit *parent = p->item;
 		int *pi;
 
+		if (parent->object.flags & UNINTERESTING)
+			continue;
+
 		if (parse_commit_gently(parent, 1) < 0)
 			continue;