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* [PATCH] fio: Use fixed opcodes for pre-mapped buffers
@ 2020-01-14 21:24 Keith Busch
  2020-01-14 21:27 ` Jens Axboe
  0 siblings, 1 reply; 2+ messages in thread
From: Keith Busch @ 2020-01-14 21:24 UTC (permalink / raw)
  To: Jens Axboe, io-uring; +Cc: Keith Busch

Use the correct opcode when for reads and writes using the fixedbuf
option, otherwise EINVAL errors will be returned to these requests.

Fixes: b10b1e70a ("io_uring: add option for non-vectored read/write commands")
Signed-off-by: Keith Busch <kbusch@kernel.org>
---
 engines/io_uring.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/engines/io_uring.c b/engines/io_uring.c
index 4f6a9678..329f2f07 100644
--- a/engines/io_uring.c
+++ b/engines/io_uring.c
@@ -84,6 +84,11 @@ static const int ddir_to_op[2][2] = {
 	{ IORING_OP_WRITEV, IORING_OP_WRITE }
 };
 
+static const int fixed_ddir_to_op[2] = {
+	IORING_OP_READ_FIXED,
+	IORING_OP_WRITE_FIXED
+};
+
 static int fio_ioring_sqpoll_cb(void *data, unsigned long long *val)
 {
 	struct ioring_options *o = data;
@@ -189,12 +194,13 @@ static int fio_ioring_prep(struct thread_data *td, struct io_u *io_u)
 	}
 
 	if (io_u->ddir == DDIR_READ || io_u->ddir == DDIR_WRITE) {
-		sqe->opcode = ddir_to_op[io_u->ddir][!!o->nonvectored];
 		if (o->fixedbufs) {
+			sqe->opcode = fixed_ddir_to_op[io_u->ddir];
 			sqe->addr = (unsigned long) io_u->xfer_buf;
 			sqe->len = io_u->xfer_buflen;
 			sqe->buf_index = io_u->index;
 		} else {
+			sqe->opcode = ddir_to_op[io_u->ddir][!!o->nonvectored];
 			if (o->nonvectored) {
 				sqe->addr = (unsigned long)
 						ld->iovecs[io_u->index].iov_base;
-- 
2.24.1


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2020-01-14 21:24 [PATCH] fio: Use fixed opcodes for pre-mapped buffers Keith Busch
2020-01-14 21:27 ` Jens Axboe

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