[PATCHv3 04/10] linux/kernel: introduce lower_48_bits macro

[Joe Perches]

On Tue, 2022-02-22 at 13:12 -0800, Keith Busch wrote:
> On Tue, Feb 22, 2022 at 12:31:30PM -0800, Joe Perches wrote:
> > > I'd only use something GENMASK() for bit ranges.
> > > Even then it is often easier to just write the value in hex.
> > 
> > Mostly it's the count of the repeated f that's difficult to
> > quickly verify visually.
> 
> I admit I made this counting mistake in earlier versions of this series.

It's simply hard for humans to do...

https://en.wikipedia.org/wiki/Subitizing