From d60340fe2d156a9a167fc6e19e55e09ae359873d Mon Sep 17 00:00:00 2001
From: Maksym Planeta <mcsim.planeta@gmail.com>
Date: Wed, 8 Feb 2012 14:10:36 +0200
Subject: Add lock in pager_truncate.

* mach-defpager/default_pager.c (pager_truncate): Add mutex lock.
---
 mach-defpager/default_pager.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mach-defpager/default_pager.c b/mach-defpager/default_pager.c
index 4b5aff89..ca53ac6c 100644
--- a/mach-defpager/default_pager.c
+++ b/mach-defpager/default_pager.c
@@ -1056,6 +1056,7 @@ pager_truncate(dpager_t pager, vm_size_t new_size)	/* in pages */
 	}
     }
 
+  mutex_lock(&pager->lock);		/* XXX lock_write */
   old_size = pager->size;
 
   if (INDIRECT_PAGEMAP(old_size))
@@ -1124,6 +1125,7 @@ pager_truncate(dpager_t pager, vm_size_t new_size)	/* in pages */
     }
 
   pager->size = new_size;
+  mutex_unlock(&pager->lock);
 
 #ifdef	CHECKSUM
 #error write me
-- 
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