io_uring: introduce struct iou_vec

I need a convenient way to pass around and work with iovec+size pair,
put them into a structure and makes use of it in rw.c

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/d39fadafc9e9047b0a292e5be6db3cf2f48bb1f7.1741362889.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/io_uring_types.h b/include/linux/io_uring_types.h
index 35fc241c4672..9101f12d21ef 100644
--- a/include/linux/io_uring_types.h
+++ b/include/linux/io_uring_types.h
@@ -110,6 +110,11 @@ struct io_uring_task {
 	} ____cacheline_aligned_in_smp;
 };
 
+struct iou_vec {
+	struct iovec		*iovec;
+	unsigned		nr;
+};
+
 struct io_uring {
 	u32 head;
 	u32 tail;