io-wq: fix hang after cancelling pending hashed work

	return match->nr_running && !match->cancel_all;

}

static inline void io_wqe_remove_pending(struct io_wqe *wqe,

					 struct io_wq_work *work,

					 struct io_wq_work_node *prev)

{

	unsigned int hash = io_get_work_hash(work);

	struct io_wq_work *prev_work = NULL;

	if (io_wq_is_hashed(work) && work == wqe->hash_tail[hash]) {

		if (prev)

			prev_work = container_of(prev, struct io_wq_work, list);

		if (prev_work && io_get_work_hash(prev_work) == hash)

			wqe->hash_tail[hash] = prev_work;

		else

			wqe->hash_tail[hash] = NULL;

	}

	wq_list_del(&wqe->work_list, &work->list, prev);

}

static void io_wqe_cancel_pending_work(struct io_wqe *wqe,

				       struct io_cb_cancel_data *match)

{

		work = container_of(node, struct io_wq_work, list);

		if (!match->fn(work, match->data))

			continue;

		wq_list_del(&wqe->work_list, node, prev);

		io_wqe_remove_pending(wqe, work, prev);

		spin_unlock_irqrestore(&wqe->lock, flags);

		io_run_cancel(work, wqe);

		match->nr_pending++;