From 32760f0803256ce12568689e7d577fbf66eecfed Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Thu, 6 Jul 2006 19:54:45 +0000
Subject: [PATCH] Only commit the mtimedb if the internal state has changed.

svn path=/main/trunk/; revision=3807
---
 pym/portage.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pym/portage.py b/pym/portage.py
index 72b42dffc..6061695fa 100644
--- a/pym/portage.py
+++ b/pym/portage.py
@@ -7127,9 +7127,15 @@ class MtimeDB(dict):
 				writemsg("Deleting invalid mtimedb key: %s\n" % str(k))
 				del d[k]
 		self.update(d)
+		self._clean_data = d
 
 	def commit(self):
-		commit_mtimedb(mydict=self, filename=self.filename)
+		d = {}
+		d.update(self)
+		# Only commit if the internal state has changed.
+		if d != self._clean_data:
+			commit_mtimedb(mydict=d, filename=self.filename)
+			self._clean_data = d
 
 def create_trees(config_root="/", target_root="/", trees=None):
 	if trees is None:
-- 
2.26.2