Re: [PATCH 3/4] Change dmapool free block management

[David Miller <davem@davemloft.net>]

From: Matthew Wilcox <willy@linux.intel.com>
Date: Wed, 26 Sep 2007 15:01:18 -0400

> Also add documentation for how dma pools work, move the header above the
> includes, add my copyright, add the original author's copyright, add a
> GPL v2 licence to the file and fix the includes.
> 
> Signed-off-by: Matthew Wilcox <willy@linux.intel.com>

Correct or not, you need to describe how you are changing the
free block management, why that transformation is valid and
worthwhile, etc.

I can see that you're getting rid of a bitmap and replacing it
with the dma_page->in_use et al. stuff, but you need to describe
that in detail.