From: Jens Axboe <axboe@fb.com>
Date: Wed, 1 Oct 2014 14:42:27 +0000 (-0600)
Subject: engines/libaio: fix submit loop to use 'ld->queued' for exit
X-Git-Tag: fio-2.1.13~4
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=2c3a4ae912d1453e09a2da013669904685c41933;ds=inline

engines/libaio: fix submit loop to use 'ld->queued' for exit

We could have head == tail for a full ring, so use the
amount queued as the gauge instead. This would be very
hard to trigger, as it would require a full ring on entry
and the first submit would have to fail to submit anything
before we loop around.

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

diff --git a/engines/libaio.c b/engines/libaio.c
index ca7bfdef..6f625167 100644
--- a/engines/libaio.c
+++ b/engines/libaio.c
@@ -283,7 +283,7 @@ static int fio_libaio_commit(struct thread_data *td)
 			continue;
 		} else
 			break;
-	} while (ld->head != ld->tail);
+	} while (ld->queued);
 
 	return ret;
 }