From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail138.messagelabs.com (mail138.messagelabs.com [216.82.249.35]) by kanga.kvack.org (Postfix) with ESMTP id 3E8636B00BD for ; Sat, 9 May 2009 06:43:49 -0400 (EDT) Date: Sat, 9 May 2009 12:44:09 +0200 From: Ingo Molnar Subject: Re: [PATCH 4/8] proc: export more page flags in /proc/kpageflags Message-ID: <20090509104409.GB16138@elte.hu> References: <20090508105320.316173813@intel.com> <20090508111031.020574236@intel.com> <20090508114742.GB17129@elte.hu> <20090508132452.bafa287a.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090508132452.bafa287a.akpm@linux-foundation.org> Sender: owner-linux-mm@kvack.org To: Andrew Morton Cc: fengguang.wu@intel.com, fweisbec@gmail.com, rostedt@goodmis.org, a.p.zijlstra@chello.nl, lizf@cn.fujitsu.com, linux-kernel@vger.kernel.org, kosaki.motohiro@jp.fujitsu.com, andi@firstfloor.org, mpm@selenic.com, adobriyan@gmail.com, linux-mm@kvack.org List-ID: * Andrew Morton wrote: > On Fri, 8 May 2009 13:47:42 +0200 > Ingo Molnar wrote: > > > > > * Wu Fengguang wrote: > > > > > Export all page flags faithfully in /proc/kpageflags. > > > > Ongoing objection and NAK against extended haphazard exporting of > > kernel internals via an ad-hoc ABI via ad-hoc, privatized > > instrumentation that only helps the MM code and nothing else. > > You're a year too late. The pagemap interface is useful. My NAK is against the extension of this mistake. So is your answer to my NAK in essence: " We merged crappy MM instrumentation a short year ago, too bad. And because it was so crappy to be in /proc we are now also treating it as a hard ABI, not as a debugfs interface - for that single app that is using it. Furthermore, we are now going to make the API and ABI even more crappy via patches queued up in -mm, and we are ignoring NAKs. We are also going to make it even harder to have sane, generic instrumentation in the upstream kernel. Deal with it, this is our code and we can mess it up the way we wish to, it's none of your business." right? Ingo -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org