static void io_submit_flush_completions(struct io_comp_state *cs)
{
	struct io_ring_ctx *ctx = cs->ctx;

	spin_lock_irq(&ctx->completion_lock);
	while (!list_empty(&cs->list)) {
		struct io_kiocb *req;

		req = list_first_entry(&cs->list, struct io_kiocb, compl.list);
		list_del(&req->compl.list);
		__io_cqring_fill_event(req, req->result, req->compl.cflags);
		if (!(req->flags & REQ_F_LINK_HEAD)) {
			req->flags |= REQ_F_COMP_LOCKED;
			io_put_req(req);
		} else {
			spin_unlock_irq(&ctx->completion_lock);
			io_put_req(req);
			spin_lock_irq(&ctx->completion_lock);
		}
	}
	io_commit_cqring(ctx);
	spin_unlock_irq(&ctx->completion_lock);

	io_cqring_ev_posted(ctx);
	cs->nr = 0;
}
static void io_submit_flush_completions(struct io_comp_state *cs)
{
	struct io_ring_ctx *ctx = cs->ctx;

	spin_lock_irq(&ctx->completion_lock);
	while (!list_empty(&cs->list)) {
		struct io_kiocb *req;

		req = list_first_entry(&cs->list, struct io_kiocb, compl.list);
		list_del(&req->compl.list);
		__io_cqring_fill_event(req, req->result, req->compl.cflags);
		if (!(req->flags & REQ_F_LINK_HEAD)) {
			req->flags |= REQ_F_COMP_LOCKED;
			io_put_req(req);
		} else {
			spin_unlock_irq(&ctx->completion_lock);
			io_put_req(req);
			spin_lock_irq(&ctx->completion_lock);
		}
	}
	io_commit_cqring(ctx);
	spin_unlock_irq(&ctx->completion_lock);

	io_cqring_ev_posted(ctx);
	cs->nr = 0;
}