From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756249Ab0ITSD7 (ORCPT ); Mon, 20 Sep 2010 14:03:59 -0400 Received: from casper.infradead.org ([85.118.1.10]:41207 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753528Ab0ITSD6 convert rfc822-to-8bit (ORCPT ); Mon, 20 Sep 2010 14:03:58 -0400 Subject: Re: [RFC][PATCH 0/2] PF_flags cleaups From: Peter Zijlstra To: Linus Torvalds Cc: Andrew Morton , Ingo Molnar , Thomas Gleixner , linux-kernel@vger.kernel.org, Jens Axboe , Tejun Heo , Avi Kivity In-Reply-To: References: <20100920151334.569154707@chello.nl> <1284998339.2275.738.camel@laptop> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Mon, 20 Sep 2010 20:03:34 +0200 Message-ID: <1285005814.2275.790.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2010-09-20 at 09:15 -0700, Linus Torvalds wrote: > On Mon, Sep 20, 2010 at 8:58 AM, Peter Zijlstra wrote: > > > > One point though, I noticed we actually expose p->flags to userspace, > > which basically makes PF_flags an ABI, do we care? > > Hmm. Where? And no, I don't think we care. But let's keep it in mind > if something subtle breaks in surprising ways. fs/proc/array.c:do_task_stat() I'll rework the patches and simply move the bits around to another field. We'll see what falls over.. :-)