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Re: [dm-devel] [PATCH 2/2] Use low pointer bits for dm io region
- From: Alasdair G Kergon <agk redhat com>
- To: Kiyoshi Ueda <k-ueda ct jp nec com>
- Cc: device-mapper development <dm-devel redhat com>, Mikulas Patocka <mpatocka redhat com>
- Subject: Re: [dm-devel] [PATCH 2/2] Use low pointer bits for dm io region
- Date: Wed, 11 Nov 2009 15:04:08 +0000
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
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