linux/lib/test_hmm.c

650 		struct page *spage;
658 		 * Note that spage might be NULL which is OK since it is an
661 		spage = migrate_pfn_to_page(*src);
662 		if (WARN(spage && is_zone_device_page(spage),
663 		     "page already in device spage pfn: 0x%lx\n",
664 		     page_to_pfn(spage)))
672 		if (spage)
673 			copy_highpage(rpage, spage);
686 			 page_to_pfn(spage), page_to_pfn(dpage));
689 		    (!spage && args->vma->vm_flags & VM_WRITE))
835 		struct page *dpage, *spage;
837 		spage = migrate_pfn_to_page(*src);
838 		if (!spage || !(*src & MIGRATE_PFN_MIGRATE))
841 		if (WARN_ON(!is_device_private_page(spage) &&
842 			    !is_device_coherent_page(spage)))
844 		spage = BACKING_PAGE(spage);
849 			 page_to_pfn(spage), page_to_pfn(dpage));
853 		copy_highpage(dpage, spage);
1209 		struct page *dpage, *spage;
1211 		spage = migrate_pfn_to_page(src_pfns[i]);
1212 		if (!spage || !(src_pfns[i] & MIGRATE_PFN_MIGRATE))
1215 		if (WARN_ON(!is_device_private_page(spage) &&
1216 			    !is_device_coherent_page(spage)))
1218 		spage = BACKING_PAGE(spage);
1221 		copy_highpage(dpage, spage);