From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <45FF4CAB.2000306@yahoo.com.au> Date: Tue, 20 Mar 2007 13:53:31 +1100 From: Nick Piggin MIME-Version: 1.0 Subject: Re: ZERO_PAGE refcounting causes cache line bouncing References: <20070317043545.GH8915@holomorphy.com> <45FE261F.3030903@yahoo.com.au> <45FE2CA0.3080204@yahoo.com.au> In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Christoph Lameter Cc: William Lee Irwin III , linux-mm@kvack.org List-ID: Christoph Lameter wrote: > On Mon, 19 Mar 2007, Nick Piggin wrote: > > >>I haven't booted this, but it is a quick forward port + some fixes and >>simplifications. > > > Eeek patch vanished. > > The comparison with ZERO_PAGE may fail if we have multiple zero pages. > Would it be possible to check for PageReserved? That still wasn't quite right either. I don't want to check for PageReserved, because I want to get rid of that flag one day. The Robin/Bill approach for multiple zero pages will work, though. -- SUSE Labs, Novell Inc. Send instant messages to your online friends http://au.messenger.yahoo.com -- 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