From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755193AbZBDGSf (ORCPT ); Wed, 4 Feb 2009 01:18:35 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751330AbZBDGSZ (ORCPT ); Wed, 4 Feb 2009 01:18:25 -0500 Received: from movementarian.org ([79.99.65.163]:46419 "EHLO movementarian.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751564AbZBDGSY (ORCPT ); Wed, 4 Feb 2009 01:18:24 -0500 Date: Wed, 4 Feb 2009 01:17:47 -0500 From: wli@movementarian.org To: Nick Piggin Cc: Andrew Morton , Benjamin Herrenschmidt , Roland Dreier , Eli Cohen , linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org Subject: Re: FW: [PATCH] powerpc/mm: Export HPAGE_SHIFT Message-ID: <20090204061747.GB10229@movementarian.org> References: <20090203164930.GA10101@mtls03> <1233712248.16867.131.camel@pasglop> <20090203211329.d6190a08.akpm@linux-foundation.org> <200902041631.39784.nickpiggin@yahoo.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200902041631.39784.nickpiggin@yahoo.com.au> User-Agent: Mutt/1.4.2.2i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 04 Feb 2009 12:50:48 +1100 Benjamin Herrenschmidt >>> Do the generic hugetlbfs code provides such an API ? If not, we may need >>> to add one. On Wednesday 04 February 2009 16:13:29 Andrew Morton wrote: >> I think it's something like >> huge_page_size(page_hstate(page)) On Wed, Feb 04, 2009 at 04:31:38PM +1100, Nick Piggin wrote: > That would work if you have a page, yes. If you want to query which hugepage > sizes are available, then you probably want for_each_hstate() (which is only > within mm/hugetlb.c at the moment, but I have no objections to exporting it > and symbols it requires). Exciting things have happened in mm/hugetlb.c while I was out sick. I've got quite some catching up to do. -- wli