[PATCH 03/12] mm/pagewalk: Skip dax pages in pagewalk

[Dan Williams]

David Hildenbrand wrote:
> On 05.06.25 09:46, Christoph Hellwig wrote:
> > On Wed, Jun 04, 2025 at 06:59:09PM -0700, Dan Williams wrote:
> >> +/* return normal pages backed by the page allocator */
> >> +static inline struct page *vm_normal_gfp_pmd(struct vm_area_struct *vma,
> >> +					     unsigned long addr, pmd_t pmd)
> >> +{
> >> +	struct page *page = vm_normal_page_pmd(vma, addr, pmd);
> >> +
> >> +	if (!is_devdax_page(page) && !is_fsdax_page(page))
> >> +		return page;
> >> +	return NULL;
> > 
> > If you go for this make it more straight forward by having the
> > normal path in the main flow:
> > 
> > 	if (is_devdax_page(page) || is_fsdax_page(page))
> > 		return NULL;
> > 	return page;
> 
> +1
> 
> But I'd defer introducing that for now if avoidable. I find the naming 
> rather ... suboptimal :)

Agree, that was a "for lack of a better term" suggestion, but the
suggestion is indeed lacking.