Commit 296e1696 authored by Pavel Begunkov's avatar Pavel Begunkov Committed by Jens Axboe
Browse files

io_uring: hide caches sqes from drivers 



There is now an io_uring private part of cmd async_data, move saved sqe
into it. Drivers are accessing it via struct io_uring_cmd::cmd.

Signed-off-by: default avatarPavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/ecbe078dd57acefdbc4366d083327086c0879378.1743357121.git.asml.silence@gmail.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 487a0710

include/linux/io_uring/cmd.h

+0 −1
Original line number Diff line number Diff line
@@ -21,7 +21,6 @@ struct io_uring_cmd { 


struct io_uring_cmd_data {

	void			*op_data;

	struct io_uring_sqe	sqes[2];

};



static inline const void *io_uring_sqe_cmd(const struct io_uring_sqe *sqe)

io_uring/uring_cmd.c

+2 −2
Original line number Diff line number Diff line
@@ -205,8 +205,8 @@ static int io_uring_cmd_prep_setup(struct io_kiocb *req, 
	 * that it doesn't read in per-op data, play it safe and ensure that

	 * any SQE data is stable beyond prep. This can later get relaxed.

	 */

	memcpy(ac->data.sqes, sqe, uring_sqe_size(req->ctx));

	ioucmd->sqe = ac->data.sqes;

	memcpy(ac->sqes, sqe, uring_sqe_size(req->ctx));

	ioucmd->sqe = ac->sqes;

	return 0;

}

io_uring/uring_cmd.h

+1 −0
Original line number Diff line number Diff line
@@ -6,6 +6,7 @@ 
struct io_async_cmd {

	struct io_uring_cmd_data	data;

	struct iou_vec			vec;

	struct io_uring_sqe		sqes[2];

};



int io_uring_cmd(struct io_kiocb *req, unsigned int issue_flags);