From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: [PATCH 08/40] mm: kmem_cache_objsize From: Peter Zijlstra In-Reply-To: References: <20070504102651.923946304@chello.nl> <20070504103157.215424767@chello.nl> <1178301545.24217.56.camel@twins> Content-Type: text/plain Date: Fri, 04 May 2007 20:21:44 +0200 Message-Id: <1178302904.2767.6.camel@lappy> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Christoph Lameter 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 List-ID: On Fri, 2007-05-04 at 11:04 -0700, Christoph Lameter wrote: > On Fri, 4 May 2007, Peter Zijlstra wrote: > > > > I could add a function that tells you how many object you could allocate > > > from a slab without the page allocator becoming involved? It would count > > > the object slots available on the partial slabs. > > > > I need to know how many pages to reserve to allocate a given number of > > items from a given slab; assuming the partial slabs are empty. That is, > > I need a worst case upper bound. > > 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. -- 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