diff -r 3859b1144d3a mm/fadvise.c
--- a/mm/fadvise.c	Sun Dec 24 05:00:03 2006 +0000
+++ b/mm/fadvise.c	Thu Dec 28 19:53:40 2006 +0100
@@ -96,9 +96,6 @@ asmlinkage long sys_fadvise64_64(int fd,
 	case POSIX_FADV_NOREUSE:
 		break;
 	case POSIX_FADV_DONTNEED:
-		if (!bdi_write_congested(mapping->backing_dev_info))
-			filemap_flush(mapping);
-
 		/* First and last FULL page! */
 		start_index = (offset+(PAGE_CACHE_SIZE-1)) >> PAGE_CACHE_SHIFT;
 		end_index = (endbyte >> PAGE_CACHE_SHIFT);