On Mon, Sep 02, 2019 at 11:51:55PM -0700, Christoph Hellwig wrote: > 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.. I doubt it; pretty much all accesses really should be using that. Not saying we shouldn't maybe do that; but that's going to be massive churn.
