From: Pavel Begunkov Date: Mon, 4 Oct 2021 19:02:51 +0000 (+0100) Subject: io_uring: don't wake sqpoll in io_cqring_ev_posted X-Git-Tag: v6.6.17~9008^2~51 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=aede728aae355d4c1d38dd02747d415af011eea7;p=platform%2Fkernel%2Flinux-rpi.git io_uring: don't wake sqpoll in io_cqring_ev_posted io_cqring_ev_posted() doesn't need to wake SQPOLL, it's either done by userspace or with task_work, but no action is required on request completion. Rip off bits waking it up in io_cqring_ev_posted(). Signed-off-by: Pavel Begunkov Link: https://lore.kernel.org/r/b49dab27b64cf11f4c50f2f90dcaac123430e05d.1633373302.git.asml.silence@gmail.com Signed-off-by: Jens Axboe --- diff --git a/fs/io_uring.c b/fs/io_uring.c index 614c982..af2cbe6 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -1619,8 +1619,6 @@ static void io_cqring_ev_posted(struct io_ring_ctx *ctx) */ if (wq_has_sleeper(&ctx->cq_wait)) wake_up_all(&ctx->cq_wait); - if (ctx->sq_data && waitqueue_active(&ctx->sq_data->wait)) - wake_up(&ctx->sq_data->wait); if (io_should_trigger_evfd(ctx)) eventfd_signal(ctx->cq_ev_fd, 1); if (waitqueue_active(&ctx->poll_wait))