From: Dylan Yudaken Date: Thu, 24 Nov 2022 09:35:59 +0000 (-0800) Subject: io_uring: allow multishot polled reqs to defer completion X-Git-Tag: v6.6.7~3945^2~4 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9a6924519e5e882631a7fff429facca838207e45;p=platform%2Fkernel%2Flinux-starfive.git io_uring: allow multishot polled reqs to defer completion Until now there was no reason for multishot polled requests to defer completions as there was no functional difference. However now this will actually defer the completions, for a performance win. Signed-off-by: Dylan Yudaken Link: https://lore.kernel.org/r/20221124093559.3780686-10-dylany@meta.com Signed-off-by: Jens Axboe --- diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c index 7ed9cbe..72c97af 100644 --- a/io_uring/io_uring.c +++ b/io_uring/io_uring.c @@ -1803,7 +1803,8 @@ int io_poll_issue(struct io_kiocb *req, bool *locked) io_tw_lock(req->ctx, locked); if (unlikely(req->task->flags & PF_EXITING)) return -EFAULT; - return io_issue_sqe(req, IO_URING_F_NONBLOCK|IO_URING_F_MULTISHOT); + return io_issue_sqe(req, IO_URING_F_NONBLOCK|IO_URING_F_MULTISHOT| + IO_URING_F_COMPLETE_DEFER); } struct io_wq_work *io_wq_free_work(struct io_wq_work *work)