[$] READ_ONCE(), WRITE_ONCE(), but not for Rust
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 https://lwn.net/Articles/844224/
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.