READ_ONCE, memory model. atomic and volitie

atomic implementation
http://lxr.free-electrons.com/source/include/asm-generic/atomic.h#L140

http://stackoverflow.com/questions/34988277/write-once-in-linux-kernel-lists

https://github.com/google/ktsan/wiki/READ_ONCE-and-WRITE_ONCE

http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4444.html

http://lwn.net/Articles/508991/

https://www.kernel.org/doc/Documentation/memory-barriers.txt

lock free programming

http://preshing.com/20120612/an-introduction-to-lock-free-programming/

Stop using unicode double quote in Google doc

Google doc has an option to automatically convert neutral double quote (") to unicode left double quote and right double quote. This is nice when typing some article. But it becomes annoying when typing some code ( and you want to just copy that code to a python script later).

To disable that, go to tools->preferences-> use smart qutoes, and just uncheck that box.