167 	rc = check_add_overflow(pages->npinned, npages, &pages->npinned);  in iopt_pages_add_npinned()
169 		WARN_ON(rc || pages->npinned > pages->npages);  in iopt_pages_add_npinned()
176 	rc = check_sub_overflow(pages->npinned, npages, &pages->npinned);  in iopt_pages_sub_npinned()
178 		WARN_ON(rc || pages->npinned > pages->npages);  in iopt_pages_sub_npinned()
878 	pages->last_npinned = pages->npinned;  in do_update_pinned()
888 	if (WARN_ON(pages->npinned > pages->last_npinned))  in update_unpinned()
890 	if (pages->npinned == pages->last_npinned)  in update_unpinned()
892 	do_update_pinned(pages, pages->last_npinned - pages->npinned, false,  in update_unpinned()
911 	if (pages->npinned == pages->last_npinned)  in pfn_reader_user_update_pinned()
914 	if (pages->npinned < pages->last_npinned) {  in pfn_reader_user_update_pinned()
915 		npages = pages->last_npinned - pages->npinned;  in pfn_reader_user_update_pinned()
920 		npages = pages->npinned - pages->last_npinned;  in pfn_reader_user_update_pinned()
1118 	WARN_ON(pages->last_npinned != pages->npinned);  in pfn_reader_destroy()
1187 	WARN_ON(pages->npinned);  in iopt_release_pages()