linux-kernel - Re: [PATCH #tj-block-for-linus] block: fix failfast merge testing in elv_rq_merge

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Date:	Thu, 16 Jul 2009 11:48:55 +0300
From:	Boaz Harrosh <bharrosh@...asas.com>
To:	Tejun Heo <tj@...nel.org>
CC:	Linux Kernel <linux-kernel@...r.kernel.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
	Jeff Garzik <jeff@...zik.org>
Subject: Re: [PATCH #tj-block-for-linus] block: fix failfast merge testing
 in elv_rq_merge_ok()

On 07/16/2009 11:35 AM, Tejun Heo wrote:
> Boaz Harrosh wrote:
>> OK So could you put a FIXME: and fat comment, on that weird "!"(s)
>> everywhere?
> 
> Yeap, sure.  How about something like the following?
> 
> 	/*
> 	 * Don't merge if failfast settings don't match.  The negation

- 	 * Don't merge if failfast settings don't match.  The negation
+ 	 * Don't merge if failfast settings don't match.
+	 * FIXME:   The negation ...

> 	 * in front of each condition is necessary because bio and
> 	 * request flags use different bit positions and the accessors
> 	 * return those bits directly.  This ugliness will soon go
> 	 * away.
> 	 */
> 

Boaz
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