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*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.