for_each_clear_bitrange_from
for_each_clear_bitrange_from(bit, end, field, start + nbits) {
for_each_clear_bitrange_from(bit, end, calib_map, nbits + start) {
for_each_clear_bitrange_from(s, e, orig, 500)
for_each_clear_bitrange_from(rs, re, chunk->populated, page_end) {
for_each_clear_bitrange_from(start, end, alloc_map, PCPU_BITMAP_BLOCK_BITS)