[$] Smart pointers for the kernel

Rust has a plethora of smart-pointer types, including reference-counted
pointers, which have special support in the compiler to make them
easier to use. The Rust-for-Linux project would like to reap those same benefits
for its smart pointers, which need to be written by hand to conform to
the

Linux kernel
memory model. Xiangfei Ding
presented at Kangrejos about the work to enable custom
smart pointers to function the same as built-in smart pointers.