On Mon, Sep 15, 2008 at 10:49:48AM -0400, Christoph Hellwig wrote:

I agree to you (or someone elses - don't remember anymore) suggestion
to put in more padding so we can add fields later.  I strongly disagree
putting in features now that we neither have a user, nor a usecase or
testcase for.

So, how about another 64 bits of padding in struct fiemap_extent? That could
help cover future uses like compression, which might require another 64 bit
offset field - we only have 32 bits of reserved space there right now.
	--Mark

--
Mark Fasheh