From: Jens Axboe <axboe@fb.com>
Date: Thu, 25 Feb 2016 16:04:06 +0000 (-0700)
Subject: backend: ensure that fio_io_sync() commits IN on queued status
X-Git-Tag: fio-2.7~17
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=42ff945ce285e9864cdafe32e27e8ef421ea5aab;ds=sidebyside

backend: ensure that fio_io_sync() commits IN on queued status

If we get a FIO_Q_QUEUED back, we need to commit pending IO
before we wait for it. Otherwise we trigger this bug:

fio: ioengines.c:257: td_io_getevents: Assertion `td->io_u_in_flight >= r' failed.

Reported-by: Andrey Kuzmin <andrey.v.kuzmin@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

diff --git a/backend.c b/backend.c
index fd818491..6083a51e 100644
--- a/backend.c
+++ b/backend.c
@@ -309,6 +309,8 @@ requeue:
 		put_io_u(td, io_u);
 		return true;
 	} else if (ret == FIO_Q_QUEUED) {
+		if (td_io_commit(td))
+			return true;
 		if (io_u_queued_complete(td, 1) < 0)
 			return true;
 	} else if (ret == FIO_Q_COMPLETED) {