From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrea Arcangeli Subject: Re: [Qemu-devel] [RFC] Replace posix-aio with custom thread pool Date: Thu, 11 Dec 2008 17:49:47 +0100 Message-ID: <20081211164947.GD6809@random.random> References: <493E965E.5050701@us.ibm.com> <20081210164401.GF18814@random.random> <493FFAB6.2000106@codemonkey.ws> <493FFC8E.9080802@redhat.com> <49400F69.8080707@codemonkey.ws> <20081210190810.GG18814@random.random> <20081211131222.GA14908@random.random> <494130B5.2080800@redhat.com> <20081211155335.GE14908@random.random> <49413B9C.3030703@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Anthony Liguori , kvm-devel , qemu-devel@nongnu.org To: Gerd Hoffmann Return-path: Received: from mx2.redhat.com ([66.187.237.31]:51012 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757397AbYLKQtx (ORCPT ); Thu, 11 Dec 2008 11:49:53 -0500 Content-Disposition: inline In-Reply-To: <49413B9C.3030703@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On Thu, Dec 11, 2008 at 05:11:08PM +0100, Gerd Hoffmann wrote: > Yes. But kernel aio requires O_DIRECT, so aio users are affected > nevertheless. Are you sure? It surely wasn't the case... > Havn't tested that. Could be it isn't a big problem, extra code size > for the two modes aside. There shouldn't be any problem. > Kernel side looks easy, attached patch + syscall table windup in all > archs ... So should we depend on this?