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

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Message-ID: <20120501183610.GD18239@redhat.com>
Date:	Tue, 1 May 2012 14:36:11 -0400
From:	Vivek Goyal <vgoyal@...hat.com>
To:	Moyer Jeff Moyer <jmoyer@...hat.com>
Cc:	Jens Axboe <jaxboe@...ionio.com>, 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 Tue, May 01, 2012 at 02:31:07PM -0400, Jeff Moyer wrote:

[..]
> > But as to actual users, I really don't know. I agree it's probably not
> > that widely used. If google still had that code search, we could get a
> > better idea :-)
> 
> I know of one project: the venerable dump/restore utility uses CLONE_IO.

I thought you wrote cooperating queue logic to fix dump as it was not
using CLONE_IO and IO from multiple threads was going in separate 
queues.

Thanks
Vivek
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