---
 mm/truncate.c |    3 +++
 1 file changed, 3 insertions(+)

Index: linux-2.6.21-rc7/mm/truncate.c
===================================================================
--- linux-2.6.21-rc7.orig/mm/truncate.c	2007-04-22 07:09:46.000000000 -0700
+++ linux-2.6.21-rc7/mm/truncate.c	2007-04-22 16:04:52.000000000 -0700
@@ -168,6 +168,9 @@ void truncate_inode_pages_range(struct a
 	if (mapping->nrpages == 0)
 		return;
 
+	printk("truncate %p %ld-%ld lend offset = %ld size-1 =%ld\n",
+		mapping, lstart, lend, page_cache_offset(mapping, lend),
+				page_cache_size(mapping) -1);
 	BUG_ON(page_cache_offset(mapping, lend) !=
 				page_cache_size(mapping) - 1);
 	end = page_cache_index(mapping, lend);