2.6.24

 mm

diff --git a/mm/truncate.c b/mm/truncate.c
index 5cdfbc1..cadc156 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -8,6 +8,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/backing-dev.h>
 #include <linux/mm.h>
 #include <linux/swap.h>
 #include <linux/module.h>
@@ -72,6 +73,8 @@ void cancel_dirty_page(struct page *page, unsigned int account_size)
       struct address_space *mapping = page->mapping;
       if (mapping && mapping_cap_account_dirty(mapping)) {
          dec_zone_page_state(page, NR_FILE_DIRTY);
+         dec_bdi_stat(mapping->backing_dev_info,
+               BDI_RECLAIMABLE);
          if (account_size)
             task_io_account_cancelled_write(account_size);
       }