[PATCH 0/4] xfstests fixes for hfsplus

[Christoph Hellwig <hch@xxxxxxxxxxxxx>]

I've recently started working on hfsplus and it's a filesystem close
enough to Posix that xfstests should work.  In fact it mostly did except
for a few tests using features not found in the basic posix set.

This series makes sure we don't run these "advanced" tests on
filesystems not supporting them.