Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762793AbXHWMIj (ORCPT ); Thu, 23 Aug 2007 08:08:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758092AbXHWMIc (ORCPT ); Thu, 23 Aug 2007 08:08:32 -0400 Received: from ns2.suse.de ([195.135.220.15]:55713 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757344AbXHWMIb (ORCPT ); Thu, 23 Aug 2007 08:08:31 -0400 Date: Thu, 23 Aug 2007 14:08:28 +0200 From: Andrea Arcangeli To: Peter Zijlstra Cc: Christoph Lameter , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [RFC 0/7] Postphone reclaim laundry to write at high water marks Message-ID: <20070823120819.GO13915@v2.random> References: <20070820215040.937296148@sgi.com> <1187692586.6114.211.camel@twins> <1187730812.5463.12.camel@lappy> <1187734144.5463.35.camel@lappy> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1187734144.5463.35.camel@lappy> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 682 Lines: 24 On Wed, Aug 22, 2007 at 12:09:03AM +0200, Peter Zijlstra wrote: > Strictly speaking: > > if: > > page = alloc_page(gfp); > > fails but: > > obj = kmem_cache_alloc(s, gfp); > > succeeds then its a bug. Why? this is like saying that if alloc_pages(order=1) fails but alloc_pages(order=0) succeeds then it's a bug. Obviously it's not a bug. The only bug is if slab allocations <=4k fails despite alloc_pages(order=0) would succeed. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/