# HG changeset patch
# User Boris Feld <boris.feld@octobus.net>
# Date 2018-10-04 06:34:59
# Node ID ccf4d808ec4c4a10349fc768d1ad2849069a2abf
# Parent  6509fcec830cc3c0c087cfa274f76d85507808b8

context: fast path linkrev adjustement in trivial case

If the search starts from the linkrev, there is nothing to adjust.

diff --git a/mercurial/context.py b/mercurial/context.py
--- a/mercurial/context.py
+++ b/mercurial/context.py
@@ -734,6 +734,8 @@ class basefilectx(object):
         mfl = repo.manifestlog
         # fetch the linkrev
         lkr = self.linkrev()
+        if srcrev == lkr:
+            return lkr
         # hack to reuse ancestor computation when searching for renames
         memberanc = getattr(self, '_ancestrycontext', None)
         iteranc = None