修改内核路径

hc

2024-05-14 bedbef8ad3e75a304af6361af235302bcc61d06b

 kernel/io_uring/io-wq.c
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@@ -176,6 +176,16 @@
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 		complete(&wq->worker_done);
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 }
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+bool io_wq_worker_stopped(void)
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+{
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+	struct io_worker *worker = current->pf_io_worker;
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+
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+	if (WARN_ON_ONCE(!io_wq_current_is_worker()))
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+		return true;
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+
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+	return test_bit(IO_WQ_BIT_EXIT, &worker->wqe->wq->state);
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+}
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+
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 static void io_worker_cancel_cb(struct io_worker *worker)
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 {
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 	struct io_wqe_acct *acct = io_wqe_get_acct(worker);
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@@ -513,7 +523,7 @@
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 static bool io_flush_signals(void)
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 {
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-	if (unlikely(test_thread_flag(TIF_NOTIFY_SIGNAL))) {
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+	if (test_thread_flag(TIF_NOTIFY_SIGNAL) || current->task_works) {
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 		__set_current_state(TASK_RUNNING);
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 		tracehook_notify_signal();
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 		return true;
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@@ -1217,6 +1227,12 @@
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 		worker = container_of(cb, struct io_worker, create_work);
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 		io_worker_cancel_cb(worker);
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+		/*
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+		 * Only the worker continuation helper has worker allocated and
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+		 * hence needs freeing.
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+		 */
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+		if (cb->func == create_worker_cont)
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+			kfree(worker);
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 	}
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 }
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