# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@fb.com>
# Date 2014-10-03 17:53:41
# Node ID 13e179dca666dc78c745195815163b316f03855e
# Parent  6a8c55d73c669a97f61cbc6919652800beaebcdd

revset: use _generatorset in _revancestors

The _descgeneratorset class is going away.

diff --git a/mercurial/revset.py b/mercurial/revset.py
--- a/mercurial/revset.py
+++ b/mercurial/revset.py
@@ -46,7 +46,7 @@ def _revancestors(repo, revs, followfirs
                     if parent != node.nullrev:
                         heapq.heappush(h, -parent)
 
-    return _descgeneratorset(iterate())
+    return _generatorset(iterate(), iterasc=False)
 
 def _revdescendants(repo, revs, followfirst):
     """Like revlog.descendants() but supports followfirst."""