I don't think acl's want/need much space in the inode.  IMHO, the
right way to do acls is with a pointer to a separate acl node which
can be shared between files.

On systems which use acls, you generally find that most of them are
the same, so you can save a lot in terms of memory, buffer cache
footprint, etc., by just putting a pointer to the acl in the inode,
and sharing the acl amongst the hundreds or thousands of files with
identical access.

					- Bill