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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: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/ecbe078dd57acefdbc4366d083327086c0879378.1743357121.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
pull/1194/head
Pavel Begunkov 2025-03-31 08:55:47 +01:00 committed by Jens Axboe
parent 487a0710f8
commit 296e169618
3 changed files with 3 additions and 3 deletions
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1
include/linux/io_uring/cmd.h
View File

@ -21,7 +21,6 @@ struct io_uring_cmd {
struct io_uring_cmd_data { struct io_uring_cmd_data {
void *op_data; void *op_data;
struct io_uring_sqe sqes[2];
}; };
static inline const void *io_uring_sqe_cmd(const struct io_uring_sqe *sqe) static inline const void *io_uring_sqe_cmd(const struct io_uring_sqe *sqe)

4
io_uring/uring_cmd.c
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@ -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 * 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. * any SQE data is stable beyond prep. This can later get relaxed.
*/ */
memcpy(ac->data.sqes, sqe, uring_sqe_size(req->ctx)); memcpy(ac->sqes, sqe, uring_sqe_size(req->ctx));
ioucmd->sqe = ac->data.sqes; ioucmd->sqe = ac->sqes;
return 0; return 0;
} }

1
io_uring/uring_cmd.h
View File

@ -6,6 +6,7 @@
struct io_async_cmd { struct io_async_cmd {
struct io_uring_cmd_data data; struct io_uring_cmd_data data;
struct iou_vec vec; struct iou_vec vec;
struct io_uring_sqe sqes[2];
}; };
int io_uring_cmd(struct io_kiocb *req, unsigned int issue_flags); int io_uring_cmd(struct io_kiocb *req, unsigned int issue_flags);