Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751364AbXBMWcW (ORCPT ); Tue, 13 Feb 2007 17:32:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751367AbXBMWcW (ORCPT ); Tue, 13 Feb 2007 17:32:22 -0500 Received: from one.firstfloor.org ([213.235.205.2]:39307 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751364AbXBMWcV (ORCPT ); Tue, 13 Feb 2007 17:32:21 -0500 Date: Tue, 13 Feb 2007 23:32:20 +0100 From: Andi Kleen To: Ingo Molnar Cc: Andi Kleen , Davide Libenzi , Linux Kernel Mailing List , Linus Torvalds , Arjan van de Ven , Christoph Hellwig , Andrew Morton , Alan Cox , Ulrich Drepper , Zach Brown , Evgeniy Polyakov , "David S. Miller" , Benjamin LaHaise , Suparna Bhattacharya , Thomas Gleixner Subject: Re: [patch 00/11] ANNOUNCE: "Syslets", generic asynchronous system call support Message-ID: <20070213223220.GK29492@one.firstfloor.org> References: <20070213142010.GA638@elte.hu> <20070213215724.GD22104@elte.hu> <20070213222626.GI22104@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070213222626.GI22104@elte.hu> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1007 Lines: 25 On Tue, Feb 13, 2007 at 11:26:26PM +0100, Ingo Molnar wrote: > > * Andi Kleen wrote: > > > > really, what's the point behind aio_cancel()? > > > > The main use case is when you open a file requester on a network file > > system where the server is down and you get tired of waiting and press > > "Cancel" it should abort the hanging IO immediately. > > ok, that should work fine already - exit in the user context gets That would be a little heavy handed. I wouldn't expect my GUI program to quit itself on cancel. And requiring it to create a new thread just to exit on cancel would be also nasty. And of course you cannot interrupt blocked IOs this way right now (currently it only works with signals in some cases on NFS) -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/