linux-kernel - Re: read()/readv() only from page cache

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Message-ID: <20140905160413.GA28285@infradead.org>
Date:	Fri, 5 Sep 2014 09:04:13 -0700
From:	Christoph Hellwig <hch@...radead.org>
To:	Jeff Moyer <jmoyer@...hat.com>
Cc:	Christoph Hellwig <hch@...radead.org>,
	Mel Gorman <mgorman@...e.de>, Milosz Tanski <milosz@...in.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Volker Lendecke <Volker.Lendecke@...Net.DE>,
	Tejun Heo <tj@...nel.org>, linux-aio@...ck.org
Subject: Re: read()/readv() only from page cache

On Fri, Sep 05, 2014 at 12:02:19PM -0400, Jeff Moyer wrote:
> > One further consideration would be to finally implement real buffered
> > I/O in kernel space by something like the above and offloading to
> > workqueues in kernelspace.  I think our workqueues now are way better
> > than any possible user thread pool, although we'd need to find a way to
> > temporarily tie the work threads to a user address space.
> 
> Do you mean real buffered AIO?

Yes.

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