linux-kernel - Re: [PATCH block#for-2.6.31] block: add request clone interface (v2)

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Message-ID: <4A3614D1.20403@panasas.com>
Date:	Mon, 15 Jun 2009 12:30:57 +0300
From:	Boaz Harrosh <bharrosh@...asas.com>
To:	Kiyoshi Ueda <k-ueda@...jp.nec.com>
CC:	Jeff Moyer <jmoyer@...hat.com>, Jens Axboe <jens.axboe@...cle.com>,
	linux-kernel@...r.kernel.org,
	device-mapper development <dm-devel@...hat.com>,
	Jun'ichi Nomura <j-nomura@...jp.nec.com>
Subject: Re: [PATCH block#for-2.6.31] block: add request clone interface (v2)

On 06/15/2009 06:31 AM, Kiyoshi Ueda wrote:
> Hi Jeff,
> 
> On 06/12/2009 11:33 PM +0900, Jeff Moyer wrote:
>> Jens Axboe <jens.axboe@...cle.com> writes:
>>> On Thu, Jun 11 2009, Jeff Moyer wrote:
>>>> Jens Axboe <jens.axboe@...cle.com> writes:
>>>> Is blk_rq_unprep_clone really the best name?
>>>>           ^^^^^^
>>> Probably not, but I'm not very good at coming up with elegant names.
>>> Your email should have included a new suggestion :-)
>> Fair enough.  ;)
>>
>>>  - blk_rq_unprep_clone(struct request *clone)
>>>      * Frees cloned bios from the clone request.
>> Why not blk_rq_free_clone?
> 
> Because the 'clone' is not freed in this interface.
> This interface frees only bios in the 'clone'.
> Allocating/freeing the 'clone' are the caller's work, since
> only the caller knows how to allocate/free it.
> 
> 'prep' after 'alloc' and 'unprep' before 'free' is symmetric
> and I feel a good candidate for my request-stacking driver,
> so I chose it. 
> 
> Thanks,
> Kiyoshi Ueda

I'm not a native English speaker as well, so I'm fine
with blk_rq_{prep,unprep}_clone. But maybe the English
people don't like it?

Perhaps
blk_rq_{clone,declone} or blk_rq_{clone,declone}_bios

(Both unclone and declone are found on the net but are not
 found in the free dictionary)

Boaz
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