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Linux io_uring Dual-Ring Buffers & Asynchronous I/O

6 questions · advanced

Test your understanding of io_uring dual-ring shared memory topology, acquire-release memory barriers, fixed buffer registration, SQPOLL kernel thread mechanics, atomic link chains, and asynchronous memory safety invariants.

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In the io_uring dual-ring architecture, which component owns updating the Submission Queue (SQ) tail and Completion Queue (CQ) head, and what memory ordering discipline is required?

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