From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail6.bemta7.messagelabs.com (mail6.bemta7.messagelabs.com [216.82.255.55]) by kanga.kvack.org (Postfix) with ESMTP id 072036B0169 for ; Thu, 25 Aug 2011 14:54:02 -0400 (EDT) Subject: Re: [PATCH] memcg: remove unneeded preempt_disable From: Peter Zijlstra Date: Thu, 25 Aug 2011 20:53:45 +0200 References: <1313650253-21794-1-git-send-email-gthelen@google.com> <20110818144025.8e122a67.akpm@linux-foundation.org> <1314284272.27911.32.camel@twins> <1314289208.3268.4.camel@mulgrave> <986ca4ed-6810-426f-b32f-5c8687e3a10b@email.android.com> <1e295500-5d1f-45dd-aa5b-3d2da2cf1a62@email.android.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Message-ID: <1314298425.27911.89.camel@twins> Mime-Version: 1.0 Sender: owner-linux-mm@kvack.org List-ID: To: Christoph Lameter Cc: James Bottomley , Andrew Morton , Greg Thelen , linux-kernel@vger.kernel.org, linux-mm@kvack.org, KAMEZAWA Hiroyuki , Balbir Singh , Daisuke Nishimura , linux-arch@vger.kernel.org On Thu, 2011-08-25 at 20:49 +0200, Peter Zijlstra wrote: > the ARM LL/SC constraints pretty much mandate we do > preempt_disable()/preempt_enable() around them,=20 My bad, that was MIPS, it states that portable programs should not issue load/store/prefetch insn inside a LL/SC region or the behaviour is undefined or somesuch. -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org