btrfs directory cookie experiment

In the following Pass 0 is the pass through the program
which will create 10 files in /export/btrfs/ with 0 deletes
Next number if file index, then directory cookie for the entry then the filename

[root@localhost src]# ../../dir /export/btrfs/ 10 0
Pass 0 -2 0000000000000001 .
Pass 0 -2 0000000000000002 ..
Pass 0 0 0000000000000003 000000006b8b4567
Pass 0 1 0000000000000004 00000000327b23c6
Pass 0 2 0000000000000005 00000000643c9869
Pass 0 3 0000000000000006 0000000066334873
Pass 0 4 0000000000000007 0000000074b0dc51
Pass 0 5 0000000000000008 0000000019495cff
Pass 0 6 0000000000000009 000000002ae8944a
Pass 0 7 000000000000000a 00000000625558ec
Pass 0 8 000000000000000b 00000000238e1f29
Pass 0 9 000000007fffffff 0000000046e87ccd
[root@localhost src]# rm -f /export/btrfs/*
[root@localhost src]# ../../dir /export/btrfs/ 10 0
Pass 0 -2 0000000000000001 .
Pass 0 -2 000000000000000c ..
Pass 0 0 000000000000000d 000000006b8b4567
Pass 0 1 000000000000000e 00000000327b23c6
Pass 0 2 000000000000000f 00000000643c9869
Pass 0 3 0000000000000010 0000000066334873
Pass 0 4 0000000000000011 0000000074b0dc51
Pass 0 5 0000000000000012 0000000019495cff
Pass 0 6 0000000000000013 000000002ae8944a
Pass 0 7 0000000000000014 00000000625558ec
Pass 0 8 0000000000000015 00000000238e1f29
Pass 0 9 000000007fffffff 0000000046e87ccd
[root@localhost src]# rm -f /export/btrfs/*
[root@localhost src]# ../../dir /export/btrfs/ 10 0
Pass 0 -2 0000000000000001 .
Pass 0 -2 0000000000000016 ..
Pass 0 0 0000000000000017 000000006b8b4567
Pass 0 1 0000000000000018 00000000327b23c6
Pass 0 2 0000000000000019 00000000643c9869
Pass 0 3 000000000000001a 0000000066334873
Pass 0 4 000000000000001b 0000000074b0dc51
Pass 0 5 000000000000001c 0000000019495cff
Pass 0 6 000000000000001d 000000002ae8944a
Pass 0 7 000000000000001e 00000000625558ec
Pass 0 8 000000000000001f 00000000238e1f29
Pass 0 9 000000007fffffff 0000000046e87ccd