From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-it0-f70.google.com (mail-it0-f70.google.com [209.85.214.70]) by kanga.kvack.org (Postfix) with ESMTP id 64AF06B0038 for ; Tue, 19 Dec 2017 10:01:34 -0500 (EST) Received: by mail-it0-f70.google.com with SMTP id b11so2285232itj.0 for ; Tue, 19 Dec 2017 07:01:34 -0800 (PST) Received: from resqmta-ch2-11v.sys.comcast.net (resqmta-ch2-11v.sys.comcast.net. [2001:558:fe21:29:69:252:207:43]) by mx.google.com with ESMTPS id q143si10121031iod.78.2017.12.19.07.01.33 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 19 Dec 2017 07:01:33 -0800 (PST) Date: Tue, 19 Dec 2017 09:01:32 -0600 (CST) From: Christopher Lameter Subject: Re: [PATCH 3/8] mm: Remove misleading alignment claims In-Reply-To: <20171216164425.8703-4-willy@infradead.org> Message-ID: References: <20171216164425.8703-1-willy@infradead.org> <20171216164425.8703-4-willy@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Matthew Wilcox Cc: linux-mm@kvack.org, "Kirill A. Shutemov" , Matthew Wilcox On Sat, 16 Dec 2017, Matthew Wilcox wrote: > From: Matthew Wilcox > > The "third double word block" isn't on 32-bit systems. The layout > looks like this: Right true. > which is 32 bytes on 64-bit, but 20 bytes on 32-bit. Nobody is trying > to use the fact that it's double-word aligned today, so just remove the > misleading claims. Well there is the rcu field and the lru fields which I thought at some point would become useful to locklessly update. But it did not happen Acked-by: Christoph Lameter -- 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