1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index c6148bbf1250..b2cd826a8c90 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -100,6 +100,7 @@ extern int dirty_background_ratio;
 extern int vm_dirty_ratio;
 extern int dirty_writeback_interval;
 extern int dirty_expire_interval;
+extern int vm_highmem_is_dirtyable;
 extern int block_dump;
 extern int laptop_mode;