The following changes since commit 5bd526f2a614e75a929906c91a5fa3bab293d319: t/io_uring: make bs and polled IO configurable at runtime (2020-07-08 15:48:11 -0600) are available in the Git repository at: git://git.kernel.dk/fio.git master for you to fetch changes up to 255f09d6d266c3e73abb9776ae481bb4d79caf00: Merge branch 'io_uring-opt' of https://github.com/antonblanchard/fio (2020-07-13 08:01:52 -0600) ---------------------------------------------------------------- Anton Blanchard (1): io_uring: Avoid needless update of completion queue head pointer Jens Axboe (1): Merge branch 'io_uring-opt' of https://github.com/antonblanchard/fio engines/io_uring.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- Diff of recent changes: diff --git a/engines/io_uring.c b/engines/io_uring.c index cd0810f4..ecff0657 100644 --- a/engines/io_uring.c +++ b/engines/io_uring.c @@ -307,7 +307,9 @@ static int fio_ioring_cqring_reap(struct thread_data *td, unsigned int events, head++; } while (reaped + events < max); - atomic_store_release(ring->head, head); + if (reaped) + atomic_store_release(ring->head, head); + return reaped; }
