commit 44bbe1093e9ed07e41edd061c4171896a900ad9f
author Jens Axboe <axboe@fb.com> Wed Oct 01 08:42:27 2014 -0600
committer Mohamad Ayyash <mkayyash@google.com> Fri Mar 06 17:57:20 2015 -0800
tree 0ad86ce78232e9c83c73e9e8753412509ee698fa
parent 8602b0a1a63479a0a05b84614d92f60ed6e26ec3

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>

engines/libaio.c

diff --git a/engines/libaio.c b/engines/libaio.c
index ca7bfde..6f62516 100644
--- a/engines/libaio.c
+++ b/engines/libaio.c
@@ -283,7 +283,7 @@
 			continue;
 		} else
 			break;
-	} while (ld->head != ld->tail);
+	} while (ld->queued);
 
 	return ret;
 }