Commit 1ee43ba8 authored by Pavel Begunkov's avatar Pavel Begunkov Committed by Jens Axboe
Browse files

io_uring: don't do async setup for links' heads 



Now, as we can do async setup without holding an SQE, we can skip doing
io_req_defer_prep() for link heads, it will be tried to be executed
inline and follows all the rules of the non-linked requests.

Signed-off-by: default avatarPavel Begunkov <asml.silence@gmail.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent be7053b7

fs/io_uring.c

+0 −3
Original line number Diff line number Diff line
@@ -6820,9 +6820,6 @@ static int io_submit_sqe(struct io_ring_ctx *ctx, struct io_kiocb *req, 
			ctx->drain_next = 0;

		}

		if (req->flags & (REQ_F_LINK | REQ_F_HARDLINK)) {

			ret = io_req_defer_prep(req);

			if (unlikely(ret))

				req->flags |= REQ_F_FAIL_LINK;

			link->head = req;

			link->last = req;

		} else {