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io_uring: refactor io_submit_sqe()

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Remove one extra if for non-linked path of io_submit_sqe().

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/03183199d1bf494b4a72eca16d792c8a5945acb4.1650056133.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2022-04-15 22:08:31 +01:00 committed by Jens Axboe
parent df3becde8d
commit 924a07e482
1 changed files with 14 additions and 9 deletions
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23
fs/io_uring.c
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@ -7765,7 +7765,7 @@ static inline int io_submit_sqe(struct io_ring_ctx *ctx, struct io_kiocb *req,
* submitted sync once the chain is complete. If none of those
* conditions are true (normal request), then just queue it.
*/
if (link->head) {
if (unlikely(link->head)) {
ret = io_req_prep_async(req);
if (unlikely(ret))
return io_submit_fail_init(sqe, req, ret);
@ -7779,17 +7779,22 @@ static inline int io_submit_sqe(struct io_ring_ctx *ctx, struct io_kiocb *req,
/* last request of the link, flush it */
req = link->head;
link->head = NULL;
} else if (req->flags & IO_REQ_LINK_FLAGS) {
link->head = req;
link->last = req;
if (req->flags & (REQ_F_FORCE_ASYNC | REQ_F_FAIL))
goto fallback;
} else if (unlikely(req->flags & (IO_REQ_LINK_FLAGS |
REQ_F_FORCE_ASYNC | REQ_F_FAIL))) {
if (req->flags & IO_REQ_LINK_FLAGS) {
link->head = req;
link->last = req;
} else {
fallback:
io_queue_sqe_fallback(req);
}
return 0;
}
if (likely(!(req->flags & (REQ_F_FORCE_ASYNC | REQ_F_FAIL))))
io_queue_sqe(req);
else
io_queue_sqe_fallback(req);
io_queue_sqe(req);
return 0;
}