Re: thin provisioned LUN support

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On Fri, 2008-11-07 at 07:14 -0500, Ric Wheeler wrote:
> I think that discard merging would be helpful (especially for devices 
> with more reasonable sized unmap chunks).

First we need generic fixes to the elevator code. It already notices
when you submit a request which _precisely_ matches an existing one in
both start and length, and will ensure that they happen in the right
order. But it _doesn't_ cope with requests that just happen to overlap.

It's on my TODO list; fairly near the top.

-- 
David Woodhouse                            Open Source Technology Centre
David.Woodhouse@xxxxxxxxx                              Intel Corporation

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