libaio engine: get rid of non-async behaviour with buffered IO
It may not be true, just get rid of it.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/HOWTO b/HOWTO
index 55595fc..f256f24 100644
--- a/HOWTO
+++ b/HOWTO
@@ -402,7 +402,9 @@
vsync Basic readv(2) or writev(2) IO.
- libaio Linux native asynchronous io.
+ libaio Linux native asynchronous io. Note that Linux
+ may only support queued behaviour with
+ non-buffered IO (set direct=1 or buffered=0).
posixaio glibc posix asynchronous io.