dlm: use single thread workqueues (6b155c8f) · Commits · 戴 / test

The recent commit to use cmwq for send and recv threads introduced problems, apparently due to multiple workqueue threads. Single threads make the problems go away, so return to that until we fully understand the concurrency issues with multiple threads. Signed-off-by:

David Teigland <teigland@redhat.com>

fs/dlm/lowcomms.c

+2 −4

Original line number	Diff line number	Diff line
		@@ -1468,15 +1468,13 @@ static void work_stop(void)

		static int work_start(void)
		{
		recv_workqueue = alloc_workqueue("dlm_recv", WQ_MEM_RECLAIM \|
		WQ_HIGHPRI \| WQ_FREEZEABLE, 0);
		recv_workqueue = create_singlethread_workqueue("dlm_recv");
		if (!recv_workqueue) {
		log_print("can't start dlm_recv");
		return -ENOMEM;
		}

		send_workqueue = alloc_workqueue("dlm_send", WQ_MEM_RECLAIM \|
		WQ_HIGHPRI \| WQ_FREEZEABLE, 0);
		send_workqueue = create_singlethread_workqueue("dlm_send");
		if (!send_workqueue) {
		log_print("can't start dlm_send");
		destroy_workqueue(recv_workqueue);

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