linux-kernel - Re: [PATCH] block: fix residual byte count handling

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Message-ID: <47C6D73E.4030302@gmail.com>
Date:	Fri, 29 Feb 2008 00:46:06 +0900
From:	Tejun Heo <htejun@...il.com>
To:	Jens Axboe <jens.axboe@...cle.com>
CC:	Mike Galbraith <efault@....de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, linux-ide@...r.kernel.org,
	linux-scsi@...r.kernel.org, Jeff Garzik <jgarzik@...ox.com>
Subject: Re: [PATCH] block: fix residual byte count handling

Jens Axboe wrote:
>> This problem was reported and diagnosed by Mike Galbraith.
> 
> Tejun, this patch isn't much cleaner at all. It really shows the pain of
> these two seperate, yet related, variables.

Not much cleaner compared to what?  I think padding stuff is bound to be
somewhat complex.  It's a nasty thing in nature.  I think ->extra_len is
better than ->raw_data_len because ->extra_len only needs to be updated
where the dirty jobs are done and extra buffer areas are added.  Any
better suggestions?

Thanks.

-- 
tejun
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