Fix EPOLLET race on Linux 5.5+
parent
20125db181
commit
2575431176
31
osd.cpp
31
osd.cpp
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@ -180,6 +180,22 @@ void osd_t::loop()
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void osd_t::handle_epoll_events()
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{
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io_uring_sqe *sqe = ringloop->get_sqe();
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if (!sqe)
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{
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throw std::runtime_error("can't get SQE, will fall out of sync with EPOLLET");
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}
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ring_data_t *data = ((ring_data_t*)sqe->user_data);
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my_uring_prep_poll_add(sqe, epoll_fd, POLLIN);
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data->callback = [this](ring_data_t *data)
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{
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if (data->res < 0)
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{
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throw std::runtime_error(std::string("epoll failed: ") + strerror(-data->res));
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}
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handle_epoll_events();
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};
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ringloop->submit();
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int nfds;
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epoll_event events[MAX_EPOLL_EVENTS];
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restart:
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@ -251,21 +267,6 @@ restart:
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{
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goto restart;
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}
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io_uring_sqe *sqe = ringloop->get_sqe();
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if (!sqe)
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{
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throw std::runtime_error("can't get SQE, will fall out of sync with EPOLLET");
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}
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ring_data_t *data = ((ring_data_t*)sqe->user_data);
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my_uring_prep_poll_add(sqe, epoll_fd, POLLIN);
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data->callback = [this](ring_data_t *data)
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{
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if (data->res < 0)
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{
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throw std::runtime_error(std::string("epoll failed: ") + strerror(-data->res));
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}
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handle_epoll_events();
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};
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}
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void osd_t::cancel_osd_ops(osd_client_t & cl)
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