On Tue, Sep 03, 2019 at 12:05:58AM +0300, Alexey Dobriyan wrote: > 32-bit accesses are shorter than 64-bit accesses on x86_64. > Nothing uses 64-bitness of ->state. > > Space savings are ~2KB on F30 kernel config. I guess we'd save even more when moving from a volatile to WRITE_ONCE/READ_ONCE..