From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161497AbXEDSaJ (ORCPT ); Fri, 4 May 2007 14:30:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161505AbXEDSaJ (ORCPT ); Fri, 4 May 2007 14:30:09 -0400 Received: from netops-testserver-4-out.sgi.com ([192.48.171.29]:47687 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1161497AbXEDSaG (ORCPT ); Fri, 4 May 2007 14:30:06 -0400 Date: Fri, 4 May 2007 11:30:05 -0700 (PDT) From: Christoph Lameter X-X-Sender: clameter@schroedinger.engr.sgi.com To: Peter Zijlstra cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, netdev@vger.kernel.org, Trond Myklebust , Thomas Graf , David Miller , James Bottomley , Mike Christie , Andrew Morton , Daniel Phillips , Pekka Enberg Subject: Re: [PATCH 08/40] mm: kmem_cache_objsize In-Reply-To: <1178302904.2767.6.camel@lappy> Message-ID: References: <20070504102651.923946304@chello.nl> <20070504103157.215424767@chello.nl> <1178301545.24217.56.camel@twins> <1178302904.2767.6.camel@lappy> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 4 May 2007, Peter Zijlstra wrote: > > Ok so you really need the number of objects per page? If you know the > > number of objects then you can calculate the pages needed which would be > > the maximum memory needed? > > Yes, that would work. Hmmm... Maybe lets have unsigned kmem_estimate_pages(struct kmem_cache *slab_cache, int objects) which would calculate the worst case memory scenario for allocation the number of indicated objects?