From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx180.postini.com [74.125.245.180]) by kanga.kvack.org (Postfix) with SMTP id 5DD116B0008 for ; Fri, 18 Jan 2013 13:23:18 -0500 (EST) Date: Fri, 18 Jan 2013 18:23:16 +0000 From: Christoph Lameter Subject: Re: [RFC][PATCH v2] slub: Keep page and object in sync in slab_alloc_node() In-Reply-To: <1358521484.7383.8.camel@gandalf.local.home> Message-ID: <0000013c4ee68811-d599982b-2d94-461f-bfc2-841215d64406-000000@email.amazonses.com> References: <1358446258.23211.32.camel@gandalf.local.home> <1358447864.23211.34.camel@gandalf.local.home> <0000013c4a69a2cf-1a19a6f6-e6a3-4f06-99a4-10fdd4b9aca2-000000@email.amazonses.com> <1358458996.23211.46.camel@gandalf.local.home> <0000013c4a7e7fbf-c51fd42a-2455-4fec-bb37-915035956f05-000000@email.amazonses.com> <1358462763.23211.57.camel@gandalf.local.home> <1358464245.23211.62.camel@gandalf.local.home> <1358464837.23211.66.camel@gandalf.local.home> <1358468598.23211.67.camel@gandalf.local.home> <1358468924.23211.69.camel@gandalf.local.home> <0000013c4e1ea131-b8ab56b9-bfca-44fe-b5da-f030551194c9-000000@email.amazonses.com> <1358521484.7383.8.camel@gandalf.local.home> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Steven Rostedt Cc: LKML , linux-mm , Andrew Morton , Pekka Enberg , Matt Mackall , Thomas Gleixner , RT , Clark Williams , John Kacur , "Luis Claudio R. Goncalves" On Fri, 18 Jan 2013, Steven Rostedt wrote: > The problem is that the changes can happen on another CPU, which means > that barrier isn't sufficient. No these are per cpu variables that are only read locally. The synchronization is not between processors. -- 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