linux-kernel - Re: Approaches to making io

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Date:	Thu, 1 Sep 2011 00:20:57 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Dave Chinner <david@...morbit.com>
Cc:	Christoph Hellwig <hch@...radead.org>,
	Daniel Ehrenberg <dehrenberg@...gle.com>,
	linux-kernel@...r.kernel.org
Subject: Re: Approaches to making io_submit not block

On Thu, Sep 01, 2011 at 01:39:02PM +1000, Dave Chinner wrote:
> > I'll get it polished up and send it out for RFC once Dave sends out
> > the updated allocation workqueue patch.  With this he moves all
> > allocator calls in XFS into a workqueue.  My direct I/O patch uses that
> > fact to use that workqueue for the allocator call and let the existing
> > aio retry infrastructure retry the direct I/O operation one that
> > workqueue has finished.
> 
> I thought you didn't like that code, Christoph. ;)

I still don't like it, but in for this case it actually was helpful.
You'll always have to see the positive side of things.

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