From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yh0-f44.google.com (mail-yh0-f44.google.com [209.85.213.44]) by kanga.kvack.org (Postfix) with ESMTP id 75AA16B0031 for ; Tue, 14 Jan 2014 16:42:49 -0500 (EST) Received: by mail-yh0-f44.google.com with SMTP id f35so297764yha.3 for ; Tue, 14 Jan 2014 13:42:49 -0800 (PST) Received: from blackbird.sr71.net ([2001:19d0:2:6:209:6bff:fe9a:902]) by mx.google.com with ESMTP id s22si2419861yha.51.2014.01.14.13.42.43 for ; Tue, 14 Jan 2014 13:42:43 -0800 (PST) Message-ID: <52D5AEF7.6020707@sr71.net> Date: Tue, 14 Jan 2014 13:41:11 -0800 From: Dave Hansen MIME-Version: 1.0 Subject: Re: [RFC][PATCH 2/9] mm: slub: abstract out double cmpxchg option References: <20140114180042.C1C33F78@viggo.jf.intel.com> <20140114180046.C897727E@viggo.jf.intel.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Christoph Lameter Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, penberg@kernel.org 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? -- 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