Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758247Ab2JYGo4 (ORCPT ); Thu, 25 Oct 2012 02:44:56 -0400 Received: from mail-wi0-f170.google.com ([209.85.212.170]:37087 "EHLO mail-wi0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756338Ab2JYGoy (ORCPT ); Thu, 25 Oct 2012 02:44:54 -0400 MIME-Version: 1.0 In-Reply-To: <20121025064009.GA15767@bbox> References: <20121022111928.GA12396@lizard> <20121025064009.GA15767@bbox> Date: Thu, 25 Oct 2012 09:44:52 +0300 X-Google-Sender-Auth: A1OOOIMZ9-CtEmpqtQdPXmPxDFg Message-ID: Subject: Re: [RFC v2 0/2] vmevent: A bit reworked pressure attribute + docs + man page From: Pekka Enberg To: Minchan Kim Cc: Anton Vorontsov , Mel Gorman , Leonid Moiseichuk , KOSAKI Motohiro , Bartlomiej Zolnierkiewicz , John Stultz , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linaro-kernel@lists.linaro.org, patches@linaro.org, kernel-team@android.com, linux-man@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 882 Lines: 19 On Thu, Oct 25, 2012 at 9:40 AM, Minchan Kim wrote: > Your description doesn't include why we need new vmevent_fd(2). > Of course, it's very flexible and potential to add new VM knob easily but > the thing we is about to use now is only VMEVENT_ATTR_PRESSURE. > Is there any other use cases for swap or free? or potential user? > Adding vmevent_fd without them is rather overkill. What ABI would you use instead? On Thu, Oct 25, 2012 at 9:40 AM, Minchan Kim wrote: > I don't object but we need rationale for adding new system call which should > be maintained forever once we add it. Agreed. -- 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/