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

[Bart Van Assche]

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.

Thanks,

Bart.