run_len
rlen1 = run_len(run_da);
rlen2 = run_len(run_da);
(vcn = old_alen + run_len(&ni->file.run_da), new_alen > vcn)) {
ntfs_sub_da(ni->mi.sbi, run_len(&ni->file.run_da));
u32 run_len;
run_len = 4 + bitstream_read_bits(is, 4);
run_len = 20 + bitstream_read_bits(is, 5);
run_len = 4 + bitstream_read_bits(is, 1);
} while (--run_len);
CLST run_len(const struct runs_tree *run);