Commit ab1dab96 authored by Pavel Begunkov's avatar Pavel Begunkov Committed by Jens Axboe
Browse files

io_uring: kill poll linking optimisation 



With IORING_FEAT_FAST_POLL in place, io_put_req_find_next() for poll
requests doesn't make much sense, and in any case re-adding it
shouldn't be a problem considering batching in tctx_task_work(). We can
remove it.

Signed-off-by: default avatarPavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/15699682bf81610ec901d4e79d6da64baa9f70be.1639605189.git.asml.silence@gmail.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 5641897a

fs/io_uring.c

+2 −6
Original line number Diff line number Diff line
@@ -5485,7 +5485,6 @@ static bool __io_poll_complete(struct io_kiocb *req, __poll_t mask) 
static void io_poll_task_func(struct io_kiocb *req, bool *locked)

{

	struct io_ring_ctx *ctx = req->ctx;

	struct io_kiocb *nxt;



	if (io_poll_rewait(req, &req->poll)) {

		spin_unlock(&ctx->completion_lock);
@@ -5509,11 +5508,8 @@ static void io_poll_task_func(struct io_kiocb *req, bool *locked) 
		spin_unlock(&ctx->completion_lock);

		io_cqring_ev_posted(ctx);



		if (done) {

			nxt = io_put_req_find_next(req);

			if (nxt)

				io_req_task_submit(nxt, locked);

		}

		if (done)

			io_put_req(req);

	}

}