[PATCHv9 1/7] block: use generic u16 for write hints

[Keith Busch]

On Mon, Oct 28, 2024 at 11:19:33AM -0700, Bart Van Assche wrote:
> On 10/25/24 2:36 PM, Keith Busch wrote:
> > This is still backwards compatible with lifetime hints. It just doesn't
> > constrain the hints to that definition.
> 
> Since struct bio is modified, and since it is important not to increase
> the size of struct bio, some comments about whether or not the size of
> struct bio is affected would be welcome.

Sure. The type just shrinks a hole from 2 bytes to 1. Total size remains
the same.