[dm-devel] [PATCH 2/2] Use low pointer bits for dm io region

[Alasdair G Kergon]

On Wed, Nov 11, 2009 at 04:26:15PM +0900, Kiyoshi Ueda wrote:
> The code is not easily readable for me.

Introducing some macros will probably deal with that.

> Why don't you introduce a new structure in which those two things
> can be stored, and allocate/attach it per bio?

That code didn't want the overhead of managing additional allocations.
 
Alasdair