Regular files inherit the Project Inherit flag in ldiskfs, zfs they do not.

Given the following commands:

mkdir proj
lfs project -sp 1000 proj
touch proj/test
lfs project proj

ldiskfs output:

 1000 P proj/test 

ZFS 0.8.0 output:

 1000 - proj/test

 Both correctly set inherit on sub-directories.

This difference in behavior causes sanity-quota test_54 to fail for ZFS 0.8.0

https://testing.whamcloud.com/test_sets/afa8f438-81b8-11e9-869c-52540065bddc