--- ext2fs/pager.c.orig	2010-05-11 18:40:40.000000000 +0200
+++ ext2fs/pager.c	2010-05-11 18:42:27.000000000 +0200
@@ -250,7 +250,11 @@
       if (block == 0)
 	/* Reading unallocated block, just make a zero-filled one.  */
 	{
-	  *writelock = 1;
+	  if (lock) {
+    		rwlock_reader_unlock (lock);
+		lock = NULL;
+	  }
+	  pager_unlock_page(pager_get_upi(node->dn->pager), page);
 	  if (offs == 0)
 	    /* No page allocated to read into yet.  */
 	    {