[PATCH v3 4/8] engines: io_uring: add support for DDIR_SYNCFS

Damien Le Moal
2026-02-27T06:00:58Z

Flag the io_uring engine with the FIO_ASYNCIO_SYNC_SYNCFS flag to
indicate that the syncfs operation is supported, synchronously.
Modify fio_ioring_queue() to call do_io_u_sync() for an io_u that has
the DDIR_SYNCFS data direction.

Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
---
engines/io_uring.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/engines/io_uring.c b/engines/io_uring.c
index 0ea3aba12e2c..d4dff3b8f275 100644
--- a/engines/io_uring.c
+++ b/engines/io_uring.c
@@ -890,12 +890,19 @@ static enum fio_q_status fio_ioring_queue(struct thread_data *td,
if (ld->queued == td->o.iodepth)
return FIO_Q_BUSY;

- /* if async trim has been tried and failed, punt to sync */
- if (io_u->ddir == DDIR_TRIM && ld->async_trim_fail) {
+ /*
+ * If this is a syncfs request, or if async trim has been tried and
+ * failed, punt to sync.
+ * */
+ if (io_u->ddir == DDIR_SYNCFS ||
+ (io_u->ddir == DDIR_TRIM && ld->async_trim_fail)) {
if (ld->queued)
return FIO_Q_BUSY;

- do_io_u_trim(td, io_u);
+ if (io_u->ddir == DDIR_TRIM)
+ do_io_u_trim(td, io_u);
+ else
+ do_io_u_sync(td, io_u);

io_u_mark_submit(td, 1);
io_u_mark_complete(td, 1);
@@ -2013,7 +2020,8 @@ static struct ioengine_ops ioengine_uring_cmd = {
.version = FIO_IOOPS_VERSION,
.flags = FIO_NO_OFFLOAD | FIO_MEMALIGN | FIO_RAWIO |
FIO_ASYNCIO_SETS_ISSUE_TIME |
- FIO_MULTI_RANGE_TRIM,
+ FIO_MULTI_RANGE_TRIM |
+ FIO_ASYNCIO_SYNC_SYNCFS,
.init = fio_ioring_init,
.post_init = fio_ioring_cmd_post_init,
.io_u_init = fio_ioring_io_u_init,
--
2.53.0