On Thu, Jan 23, 2020 at 09:16:01PM -0800, Eric Biggers wrote: [] > So we need READ_ONCE() to ensure that a consistent value is used. By the way, my understanding is all pointer could be accessed atomicly guaranteed by compiler. In my opinion, we generally use READ_ONCE() on pointers for other uses (such as, avoid accessing a variable twice due to compiler optimization and it will break some logic potentially or need some data dependency barrier...) Thanks, Gao Xiang
