From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752562AbaIEQES (ORCPT ); Fri, 5 Sep 2014 12:04:18 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:57206 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750803AbaIEQER (ORCPT ); Fri, 5 Sep 2014 12:04:17 -0400 Date: Fri, 5 Sep 2014 09:04:13 -0700 From: Christoph Hellwig To: Jeff Moyer Cc: Christoph Hellwig , Mel Gorman , Milosz Tanski , LKML , Volker Lendecke , Tejun Heo , linux-aio@kvack.org Subject: Re: read()/readv() only from page cache Message-ID: <20140905160413.GA28285@infradead.org> References: <20140905110927.GI17501@suse.de> <20140905154829.GA22956@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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.