Add missing types to log_io_u()

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/log.c b/log.c
index 6117b70..829de94 100644
--- a/log.c
+++ b/log.c
@@ -21,9 +21,9 @@
 void log_io_u(struct thread_data *td, struct io_u *io_u)
 {
 	const char *act[] = { "read", "write", "sync", "datasync",
-				"sync_file_range" };
+				"sync_file_range", "wait", "trim" };
 
-	assert(io_u->ddir <= 4);
+	assert(io_u->ddir <= 6);
 
 	if (!td->o.write_iolog_file)
 		return;