• [$] READ_ONCE(), WRITE_ONCE(), but not for Rust

    From LWN.net@86:200/23 to All on Sat Jan 10 06:40:08 2026
    The READ_ONCE() and WRITE_ONCE() macros are heavily used
    within the kernel; there are nearly 8,000 call sites for
    READ_ONCE(). They are key to the implementation of many lockless algorithms and can be necessary for some
    types of device-memory access. So one might think that, as the
    amount of Rust code in the kernel increases, there would be a place for
    Rust versions of these macros as well. The truth of the matter, though, is that the Rust community seems to want to take a different approach to concurrent data access.

    https://lwn.net/Articles/1053142/
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