gunicorn logging reload on USR1

gistfile1.txt

diff --git a/gunicorn/app/base.py b/gunicorn/app/base.py
index 6062117..a681420 100644
--- a/gunicorn/app/base.py
+++ b/gunicorn/app/base.py
@@ -38,6 +38,7 @@ class Application(object):
         self.callable = None
         self.logger = None
         self.do_load_config()
+        self.__handlers = None
 
     def do_load_config(self):
         try:
@@ -106,8 +107,7 @@ class Application(object):
         self.do_load_config()
         if self.cfg.spew:
             debug.spew()
-        loglevel = self.LOG_LEVELS.get(self.cfg.loglevel.lower(), logging.INFO)
-        self.logger.setLevel(loglevel)
+        self.configure_logging()
         
     def wsgi(self):
         if self.callable is None:
@@ -148,6 +148,10 @@ class Application(object):
                 handlers.append(logging.FileHandler(self.cfg.logfile))
             else:
                 handlers.append(logging.StreamHandler())
+            if self.__handlers:
+                for h in self.__handlers:
+                    self.logger.removeHandler(h)
+            self.__handlers = handlers
 
             loglevel = self.LOG_LEVELS.get(self.cfg.loglevel.lower(), logging.INFO)
             self.logger.setLevel(loglevel)
diff --git a/gunicorn/arbiter.py b/gunicorn/arbiter.py
index 5aa8a4c..9569cb3 100644
--- a/gunicorn/arbiter.py
+++ b/gunicorn/arbiter.py
@@ -236,8 +236,10 @@ class Arbiter(object):
     def handle_usr1(self):
         """\
         SIGUSR1 handling.
-        Kill all workers by sending them a SIGUSR1
+        Reload the logging configuration.
+        Kill all workers by sending them a SIGUSR1.
         """
+        self.app.configure_logging()
         self.kill_workers(signal.SIGUSR1)
     
     def handle_usr2(self):