From ace9ccfe9f6b987861404fdf08d22a5663953713 Mon Sep 17 00:00:00 2001
From: Alex Gaynor <alex.gaynor@gmail.com>
Date: Tue, 24 Jul 2012 19:03:26 -0700
Subject: [PATCH] Fixed #18666 -- when upgrading a user's password to a new
 algorithm only save the password field to the databaes.

---
 django/contrib/auth/models.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/django/contrib/auth/models.py b/django/contrib/auth/models.py
index 39d9e8408d..1099aa195b 100644
--- a/django/contrib/auth/models.py
+++ b/django/contrib/auth/models.py
@@ -299,7 +299,7 @@ class User(models.Model):
         """
         def setter(raw_password):
             self.set_password(raw_password)
-            self.save()
+            self.save(update_fields=["password"])
         return check_password(raw_password, self.password, setter)
 
     def set_unusable_password(self):