linux-kernel - Re: [PATCH v3.4-rc5] block: iocontext->nr

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Message-ID: <4FA03391.9010308@fusionio.com>
Date:	Tue, 1 May 2012 21:03:45 +0200
From:	Jens Axboe <jaxboe@...ionio.com>
To:	Jeff Moyer <jmoyer@...hat.com>
CC:	Tejun Heo <tj@...nel.org>, Dave Jones <davej@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Sasha Levin <levinsasha928@...il.com>
Subject: Re: [PATCH v3.4-rc5] block: iocontext->nr_tasks should be initialized
 to one

On 2012-05-01 20:50, Jeff Moyer wrote:
> Jens Axboe <jaxboe@...ionio.com> writes:
> 
>> On 2012-05-01 20:31, Jeff Moyer wrote:
>>> Jens Axboe <jaxboe@...ionio.com> writes:
>>> I know of one project: the venerable dump/restore utility uses CLONE_IO.
>>
>> Thanks Jeff, now I remember the specifics of what we tested. IIRC, we
>> also did numbers back then comparing the coop merging vs specifically
>> using CLONE_IO.
> 
> Maybe?  I picked through some old emails but couldn't find that exact
> comparison.  It would have been a smart thing to do, though!

It might have been in a bugzilla thing, unfortunately. But yes, it'd be
the smart thing to do, hence I was pretty sure that you did it!

-- 
Jens Axboe

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