From 901c61a1d25e7c8963e51012760a82730eda1910 Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Sun, 23 Sep 2012 00:04:06 +0200
Subject: Fix pager deadlock

http://lists.gnu.org/archive/html/bug-hurd/2010-03/msg00127.html

* libpager/lock-object.c (_pager_lock_object): Release interlock before
calling memory_object_lock_request, to let the callbacks take it.
---
 libpager/lock-object.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libpager/lock-object.c b/libpager/lock-object.c
index d108666e..d8d4a1b7 100644
--- a/libpager/lock-object.c
+++ b/libpager/lock-object.c
@@ -65,9 +65,11 @@ _pager_lock_object (struct pager *p,
 	}
     }
 
+  mutex_unlock (&p->interlock);
   memory_object_lock_request (p->memobjcntl, offset, size, should_return,
 			      should_flush, lock_value, 
 			      sync ? p->port.port_right : MACH_PORT_NULL);
+  mutex_lock (&p->interlock);
   
   if (sync)
     {
-- 
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