On Thu, Aug 18, 2016 at 07:51:19AM +0800, zijun_hu wrote: > > What the hell is anything without __KERNEL__ doing with linux/bitops.h in > > the first place? IOW, why do we have those ifdefs at all? > > > > __KERNEL__ is used to indicate the relevant sections within kernel > headers can't be exported to or used by user space
ITYM "used to be used". These days it's "everything outside of */uapi/*.h can't be exported"...
