Upgraded Kernel. Now my experimental io_uring branch of postgres is broken :( Different backends, inheriting io_urings from the postmaster, aren't allowed to submit events anymore. Only consume. Hm.
Cool. Found another fork related one (fcb323cc53e2). I guess I better contribute a liburing test for sharing a uring across a fork... Shoul've upgrade the kernel earlier in the cycle :(
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Your situation is unique in that you're sharing across forks, so yeah would be great to have actual test cases for that in liburing. Always nice to test early, but test cases are better since it means I don't have to rely on others testing early.
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Ok, will try to write one. Do you think sharing between processes is a bad path to go down, given the reasoning I outlined (https://lore.kernel.org/io-uring/20200126055457.5w4f5jyhkic7cixu@alap3.anarazel.de/ …)? I'd rather not work towards building on top of io_uring, that the author of uring finds too constraining for future development.
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