--- mm/page-writeback.c

+++ mm/page-writeback.c

@@ -78,7 +78,7 @@ int vm_highmem_is_dirtyable;

/*

* The generator of dirty data starts writeback at this percentage

*/

-int vm_dirty_ratio = 20;

+int vm_dirty_ratio = 1;

/*

* vm_dirty_bytes starts at 0 (disabled) so that it is a function of