Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755385AbXF3IuP (ORCPT ); Sat, 30 Jun 2007 04:50:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752641AbXF3IuE (ORCPT ); Sat, 30 Jun 2007 04:50:04 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:52735 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753153AbXF3IuB (ORCPT ); Sat, 30 Jun 2007 04:50:01 -0400 Date: Sat, 30 Jun 2007 09:49:48 +0100 From: Christoph Hellwig To: Andrew Morton Cc: David Miller , clameter@sgi.com, hugh@veritas.com, James.Bottomley@steeleye.com, rmk+lkml@arm.linux.org.uk, linux-kernel@vger.kernel.org Subject: Re: [PATCH] Containment measures for slab objects on scatter gather lists Message-ID: <20070630084948.GC21186@infradead.org> Mail-Followup-To: Christoph Hellwig , Andrew Morton , David Miller , clameter@sgi.com, hugh@veritas.com, James.Bottomley@steeleye.com, rmk+lkml@arm.linux.org.uk, linux-kernel@vger.kernel.org References: <20070628.212825.78710369.davem@davemloft.net> <20070628.220606.112621271.davem@davemloft.net> <20070628222424.4cbae90c.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070628222424.4cbae90c.akpm@linux-foundation.org> User-Agent: Mutt/1.4.2.3i X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 857 Lines: 20 On Thu, Jun 28, 2007 at 10:24:24PM -0700, Andrew Morton wrote: > > Really, it would be great if we could treat kmalloc() objects > > just like real pages. > > >From a high level, that seems like a bad idea. kmalloc() gives you a > virtual address and you really shouldn't be poking around at that memory's > underlying page's pageframe metadata. > > However we can of course do tasteless and weird things if the benefit is > sufficient.... Hey, when we had exactly that issues coming up with xfs/ext3 recovery over iscsi/aoe you said it's fine :) End result is that XFS got fixed and ext3 is still broken.. - 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/