From: Jens Axboe <jens.axboe@oracle.com>
Date: Fri, 1 Feb 2008 17:33:23 +0000 (+0100)
Subject: CPU burn engine fix
X-Git-Tag: fio-1.18~15
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=d0656a93fbacc0cf0d6f405407b55b768affa949

CPU burn engine fix

It's ok to have zero buflen, if we are not doing real IO.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---

diff --git a/io_u.c b/io_u.c
index d54d0285..42ad37b5 100644
--- a/io_u.c
+++ b/io_u.c
@@ -733,7 +733,7 @@ struct io_u *get_io_u(struct thread_data *td)
 	assert(f->flags & FIO_FILE_OPEN);
 
 	if (io_u->ddir != DDIR_SYNC) {
-		if (!io_u->buflen) {
+		if (!io_u->buflen && !(td->io_ops->flags & FIO_NOIO)) {
 			dprint(FD_IO, "get_io_u: zero buflen on %p\n", io_u);
 			goto err_put;
 		}