From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with ESMTP id 253358D0040 for ; Mon, 28 Mar 2011 18:42:02 -0400 (EDT) Received: from wpaz21.hot.corp.google.com (wpaz21.hot.corp.google.com [172.24.198.85]) by smtp-out.google.com with ESMTP id p2SMfwem025208 for ; Mon, 28 Mar 2011 15:41:58 -0700 Received: from pwi15 (pwi15.prod.google.com [10.241.219.15]) by wpaz21.hot.corp.google.com with ESMTP id p2SMfd14030289 (version=TLSv1/SSLv3 cipher=RC4-SHA bits=128 verify=NOT) for ; Mon, 28 Mar 2011 15:41:57 -0700 Received: by pwi15 with SMTP id 15so597635pwi.19 for ; Mon, 28 Mar 2011 15:41:56 -0700 (PDT) Date: Mon, 28 Mar 2011 15:41:53 -0700 (PDT) From: David Rientjes Subject: Re: [PATCH 1/3] mm: Optimize pfn calculation in online_page() In-Reply-To: <20110328092310.GB13826@router-fw-old.local.net-space.pl> Message-ID: References: <20110328092310.GB13826@router-fw-old.local.net-space.pl> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Daniel Kiper Cc: ian.campbell@citrix.com, akpm@linux-foundation.org, andi.kleen@intel.com, haicheng.li@linux.intel.com, fengguang.wu@intel.com, jeremy@goop.org, konrad.wilk@oracle.com, dan.magenheimer@oracle.com, v.tolstov@selfip.ru, pasik@iki.fi, dave@linux.vnet.ibm.com, wdauchy@gmail.com, xen-devel@lists.xensource.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org On Mon, 28 Mar 2011, Daniel Kiper wrote: > If CONFIG_FLATMEM is enabled pfn is calculated in online_page() > more than once. It is possible to optimize that and use value > established at beginning of that function. > > Signed-off-by: Daniel Kiper Acked-by: David Rientjes -- 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