From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: [ANNOUNCE] Native Linux KVM tool v2 Date: Thu, 16 Jun 2011 07:25:52 -0400 Message-ID: <20110616112552.GA15816@infradead.org> References: <4DF93010.1040006@codemonkey.ws> <4DF935C1.4020000@codemonkey.ws> <20110616092429.GA5484@infradead.org> <20110616094810.GA19965@infradead.org> <20110616100239.GA29262@infradead.org> <20110616112230.GD26110@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Christoph Hellwig , Pekka Enberg , Anthony Liguori , Alexander Graf , Prasad Joshi , Avi Kivity , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Andrew Morton , Linus Torvalds , Sasha Levin , Cyrill Gorcunov , Asias He , Jens Axboe To: Ingo Molnar Return-path: Received: from 173-166-109-252-newengland.hfc.comcastbusiness.net ([173.166.109.252]:52079 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750904Ab1FPL0F (ORCPT ); Thu, 16 Jun 2011 07:26:05 -0400 Content-Disposition: inline In-Reply-To: <20110616112230.GD26110@elte.hu> Sender: kvm-owner@vger.kernel.org List-ID: On Thu, Jun 16, 2011 at 01:22:30PM +0200, Ingo Molnar wrote: > Such as? I don't think apps can actually know whether disk blocks > have been 'instantiated' by a particular filesystem or not, so the > manpage: In general they can't. The only good use case for sync_file_range is to paper over^H^H^H^H^H^H^H^H^Hcontrol write back behaviour.