Re: ksm: initialize rmap values directly and make them const

[David Hildenbrand (Arm)]

On 2/6/26 16:29, Matthew Wilcox wrote:
> On Fri, Feb 06, 2026 at 03:22:54PM +0800, xu.xin16@xxxxxxxxxx wrote:
> > make them const to make code more robust. Besides, since KSM folios are always
> > order-0, so folio_nr_pages(KSM folio) is always 1, so the line:
> >
> > 	"pgoff_end = pgoff_start + folio_nr_pages(folio) - 1;"
> >
> > becomes directly:
> >
> > 	"pgoff_end = pgoff_start;"
>
> How do you know KSM folios will always be order 0?  I don't.  NAK this
> change.

Once that changes we can revisit. ACK from me stands.

--
Cheers,

David