siint range parsing HOWTO update

[fio.git] / engines / null.c

diff --git a/engines/null.c b/engines/null.c
index 67ac4535245f40c72905dfac07df3b6c9e182b33..6397ec07be5a870d6114cd7e6b01e8bf2dcf69e3 100644 (file)
--- a/engines/null.c
+++ b/engines/null.c
@@ -1,5 +1,8 @@
 /*
- * null engine - doesn't do any transfers. Used to test fio.
+ * null engine
+ *
+ * IO engine that doesn't do any real IO transfers, it just pretends to.
+ * The main purpose is to test fio itself.
  *
  */
 #include <stdio.h>
@@ -61,7 +64,7 @@ static int fio_null_queue(struct thread_data fio_unused *td, struct io_u *io_u)
 static int fio_null_setup(struct thread_data *td)
 {
        struct fio_file *f;
-       int i;
+       unsigned int i;
 
        if (!td->total_file_size) {
                log_err("fio: need size= set\n");