Update fio io engine version

[fio.git] / engines / null.c

diff --git a/engines/null.c b/engines/null.c
index acb8cf4170c4e00de963f55bae736250a37109da..724feca716edea0d105be29fab963ffd6f97341f 100644 (file)
--- a/engines/null.c
+++ b/engines/null.c
@@ -45,8 +45,11 @@ static int fio_null_commit(struct thread_data *td)
 {
        struct null_data *nd = td->io_ops->data;
 
-       nd->events += nd->queued;
-       nd->queued = 0;
+       if (!nd->events) {
+               nd->events = nd->queued;
+               nd->queued = 0;
+       }
+
        return 0;
 }
 
@@ -56,6 +59,8 @@ static int fio_null_queue(struct thread_data fio_unused *td, struct io_u *io_u)
 
        if (td->io_ops->flags & FIO_SYNCIO)
                return FIO_Q_COMPLETED;
+       if (nd->events)
+               return FIO_Q_BUSY;
 
        nd->io_us[nd->queued++] = io_u;
        return FIO_Q_QUEUED;
@@ -66,18 +71,8 @@ static int fio_null_setup(struct thread_data *td)
        struct fio_file *f;
        unsigned int i;
 
-       if (!td->o.size) {
-               log_err("fio: need size= set\n");
-               return 1;
-       }
-
-       td->io_size = td->o.size;
-       td->total_io_size = td->io_size;
-
-       for_each_file(td, f, i) {
-               f->real_file_size = td->total_io_size / td->o.nr_files;
-               f->file_size = f->real_file_size;
-       }
+       for_each_file(td, f, i)
+               f->real_file_size = -1ULL;
 
        return 0;
 }