linux-kernel - Re: [dm-devel] Re: [RFC PATCH 1/8] rqbased-dm: allow blk_get_request() to be called from interrupt context

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Message-ID: <20061221182432.GB17199@kernel.dk>
Date:	Thu, 21 Dec 2006 19:24:32 +0100
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Mike Christie <michaelc@...wisc.edu>
Cc:	device-mapper development <dm-devel@...hat.com>,
	mchristi@...hat.com, linux-kernel@...r.kernel.org, agk@...hat.com
Subject: Re: [dm-devel] Re: [RFC PATCH 1/8] rqbased-dm: allow blk_get_request()  to be called from interrupt context

On Thu, Dec 21 2006, Mike Christie wrote:
> Or the block layer code could set up the clone too. elv_next_request
> could prep a clone based on the orignal request for the driver then dm
> would not have to worry about that part.

It really can't, since it doesn't know how to allocate the clone
request. I'd rather export this functionality as helpers.

-- 
Jens Axboe

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