linux-kernel - Re: [PATCH block#for-2.6.31 2/3] block: set rq->resid_len to blk_rq

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Date:	Sat, 16 May 2009 22:48:29 +0900
From:	Tejun Heo <htejun@...il.com>
To:	Sergei Shtylyov <sshtylyov@...mvista.com>
CC:	Jens Axboe <jens.axboe@...cle.com>,
	James Bottomley <James.Bottomley@...senPartnership.com>,
	Boaz Harrosh <bharrosh@...asas.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	linux-scsi <linux-scsi@...r.kernel.org>,
	IDE/ATA development list <linux-ide@...r.kernel.org>,
	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	Borislav Petkov <petkovbb@...glemail.com>,
	Pete Zaitcev <zaitcev@...hat.com>,
	Eric Moore <Eric.Moore@....com>,
	"Darrick J. Wong" <djwong@...ibm.com>
Subject: Re: [PATCH block#for-2.6.31 2/3] block: set rq->resid_len to blk_rq_bytes()
 on issue

Hello, Sergei.

Sergei Shtylyov wrote:
>> Heh... there's a reason I mentioned the original commit.  The original
>> code was
>>
>>     if (ret > 0) {
>>         /* positive number is the untransferred residual */
>>         rsp->data_len = ret;
>>         req->data_len = 0;
>>         ret = 0;
>>     } else if (ret == 0) {
>>         rsp->data_len = 0;
>>         req->data_len = 0;
>>     }
>>   
> 
>   But still,
> 
>                req->data_len = 0;
> 
> is common between both branches, so could be moved after the *if*
> statement.

Yeah, sure, feel free to submit a patch, but I don't know.  Does it
even matter at all as long as the intention is clear?

Thanks.

-- 
tejun
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