From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zach Brown Subject: Re: [ATTEND] Attendance request Date: Thu, 02 Feb 2012 16:03:58 -0500 Message-ID: <4F2AFA3E.5060508@zabbo.net> References: <4F2ABF08.60502@oracle.com> <20120202202911.GC1032@thunk.org> <4F2AF737.9020106@zabbo.net> <20120202205843.GD1032@thunk.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Dave Kleikamp , linux-fsdevel@vger.kernel.org To: Ted Ts'o Return-path: Received: from lulu.zabbo.net ([69.168.54.52]:41761 "EHLO lulu.zabbo.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756224Ab2BBVEA (ORCPT ); Thu, 2 Feb 2012 16:04:00 -0500 In-Reply-To: <20120202205843.GD1032@thunk.org> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: > I only intend to do this for reads and non-allocating writes; in those > cases, it's actually pretty easy. *nod* > My concern with just stuffing every single io_submit into a kernel > thread is the overhead involved, especially if there is a high rate of > AIO submission (think high-speed PCIe-attached flash). Oh, I certainly agree. It'd be real work to find out if its possible to make it perform reasonably. I'd still like to see someone support that work so I'll keep mentioning it :). - z