356 _shift_data_right_pages(struct page **pages, size_t pgto_base,  in _shift_data_right_pages()  argument
363 	BUG_ON(pgto_base <= pgfrom_base);  in _shift_data_right_pages()
365 	pgto_base += len;  in _shift_data_right_pages()
368 	pgto = pages + (pgto_base >> PAGE_CACHE_SHIFT);  in _shift_data_right_pages()
371 	pgto_base &= ~PAGE_CACHE_MASK;  in _shift_data_right_pages()
376 		if (pgto_base == 0) {  in _shift_data_right_pages()
377 			pgto_base = PAGE_CACHE_SIZE;  in _shift_data_right_pages()
386 		if (copy > pgto_base)  in _shift_data_right_pages()
387 			copy = pgto_base;  in _shift_data_right_pages()
390 		pgto_base -= copy;  in _shift_data_right_pages()
395 		memmove(vto + pgto_base, vfrom + pgfrom_base, copy);  in _shift_data_right_pages()