From: Jens Axboe <axboe@kernel.dk>
Date: Fri, 11 Sep 2020 15:58:15 +0000 (-0600)
Subject: Allow offload with FAKEIO engines
X-Git-Tag: fio-3.24~28
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=695611a9d4cd554d44d8b2ec5da2811061950a2e;p=fio.git

Allow offload with FAKEIO engines

The last check was too restrictive, we can allow it with the fake IO
engines.

Fixes: abfd235a0533 ("Disable io_submit_mode=offload with async engines")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/ioengines.c b/ioengines.c
index 32583d5a..d3be8026 100644
--- a/ioengines.c
+++ b/ioengines.c
@@ -44,7 +44,8 @@ static bool check_engine_ops(struct thread_data *td, struct ioengine_ops *ops)
 	/*
 	 * async engines aren't reliable with offload
 	 */
-	if (td->o.io_submit_mode == IO_MODE_OFFLOAD) {
+	if ((td->o.io_submit_mode == IO_MODE_OFFLOAD) &&
+	    !(ops->flags & FIO_FAKEIO)) {
 		log_err("%s: can't be used with offloaded submit. Use a sync "
 			"engine\n", ops->name);
 		return true;