From: Jens Axboe <axboe@kernel.dk>
Date: Mon, 11 Oct 2021 15:49:21 +0000 (-0600)
Subject: io_u: don't attempt to requeue for full residual
X-Git-Tag: fio-3.29~70
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=c4cb947e8f92c10835164b67deed06828cfc01be;p=fio.git

io_u: don't attempt to requeue for full residual

If we get zero bytes transferred, then don't attempt to re-set the
io_u and requeue the IO. That's a fatal condition for this IO.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/io_u.c b/io_u.c
index 5289b5d1..586a4bef 100644
--- a/io_u.c
+++ b/io_u.c
@@ -2004,7 +2004,7 @@ static void io_completed(struct thread_data *td, struct io_u **io_u_ptr,
 		 * Make sure we notice short IO from here, and requeue them
 		 * appropriately!
 		 */
-		if (io_u->resid) {
+		if (bytes && io_u->resid) {
 			io_u->xfer_buflen = io_u->resid;
 			io_u->xfer_buf += bytes;
 			io_u->offset += bytes;