[Ocfs2-tools-devel] [PATCH 06/22] libocfs2: Make ocfs2_init_group_desc aware of discontig group.

[Mark Fasheh]

On Thu, Apr 01, 2010 at 03:21:04AM -0700, Joel Becker wrote:
> 	It's better if we have a way to know the group descriptor is
> discontiguous without knowing the inode and superblock.  Then the
> feature tests are mere sanity.
> 	We can add bg_flags as you describe above.  Another option is to
> see that bg_bitmap + bg_size == offsetof(bg_list).  Both work.  The
> former is more descriptive, the latter is less invasive.  Which works
> for you?  Mark?

I think doing it this way (bg_size + bg_bitmap) is fine - bg_size is
identical on all ocfs2 volumes at their given clustersize / block size, so
the test you describe above would always work. And we'd get to save on some
already-small fields in our allocation groups.
	--Mark

--
Mark Fasheh