From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qa0-f52.google.com (mail-qa0-f52.google.com [209.85.216.52]) by kanga.kvack.org (Postfix) with ESMTP id 9B6906B003D for ; Thu, 16 Jan 2014 11:45:50 -0500 (EST) Received: by mail-qa0-f52.google.com with SMTP id j15so2313718qaq.39 for ; Thu, 16 Jan 2014 08:45:50 -0800 (PST) Received: from qmta14.emeryville.ca.mail.comcast.net (qmta14.emeryville.ca.mail.comcast.net. [2001:558:fe2d:44:76:96:27:212]) by mx.google.com with ESMTP id ib7si4529397qcb.81.2014.01.16.08.45.49 for ; Thu, 16 Jan 2014 08:45:49 -0800 (PST) Date: Thu, 16 Jan 2014 10:45:47 -0600 (CST) From: Christoph Lameter Subject: Re: [RFC][PATCH 2/9] mm: slub: abstract out double cmpxchg option In-Reply-To: <52D5AEF7.6020707@sr71.net> Message-ID: References: <20140114180042.C1C33F78@viggo.jf.intel.com> <20140114180046.C897727E@viggo.jf.intel.com> <52D5AEF7.6020707@sr71.net> Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Dave Hansen Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, penberg@kernel.org On Tue, 14 Jan 2014, Dave Hansen wrote: > On 01/14/2014 11:49 AM, Christoph Lameter wrote: > > On Tue, 14 Jan 2014, Dave Hansen wrote: > >> I found this useful to have in my testing. I would like to have > >> it available for a bit, at least until other folks have had a > >> chance to do some testing with it. > > > > I dont really see the point of this patch since we already have > > CONFIG_HAVE_ALIGNED_STRUCT_PAGE to play with. > > With the current code, if you wanted to turn off the double-cmpxchg abd > get a 56-byte 'struct page' how would you do it? Can you do it with a > .config, or do you need to hack the code? Remove HAVE_ALIGNED_STRUCT_PAGE from a Kconfig file. -- 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