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

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Message-ID: <x49obq7lorr.fsf@segfault.boston.devel.redhat.com>
Date:	Tue, 01 May 2012 14:50:00 -0400
From:	Jeff Moyer <jmoyer@...hat.com>
To:	Jens Axboe <jaxboe@...ionio.com>
Cc:	Tejun Heo <tj@...nel.org>, Dave Jones <davej@...hat.com>,
	"linux-kernel\@vger.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

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!

-Jeff
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