Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758136AbYJVU00 (ORCPT ); Wed, 22 Oct 2008 16:26:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752128AbYJVU0Q (ORCPT ); Wed, 22 Oct 2008 16:26:16 -0400 Received: from fxip-0047f.externet.hu ([88.209.222.127]:56750 "EHLO pomaz-ex.szeredi.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751416AbYJVU0P (ORCPT ); Wed, 22 Oct 2008 16:26:15 -0400 To: cl@linux-foundation.org CC: miklos@szeredi.hu, penberg@cs.helsinki.fi, nickpiggin@yahoo.com.au, hugh@veritas.com, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org In-reply-to: (message from Christoph Lameter on Wed, 22 Oct 2008 13:19:15 -0700 (PDT)) Subject: Re: SLUB defrag pull request? References: <1223883004.31587.15.camel@penberg-laptop> <1223883164.31587.16.camel@penberg-laptop> <200810132354.30789.nickpiggin@yahoo.com.au> <48F378C6.7030206@linux-foundation.org> <48FC9CCC.3040006@linux-foundation.org> <48FCCC72.5020202@linux-foundation.org> <48FCD7CB.4060505@linux-foundation.org> <48FCE1C4.20807@linux-foundation.org> <48FE6306.6020806@linux-foundation.org> Message-Id: From: Miklos Szeredi Date: Wed, 22 Oct 2008 22:26:00 +0200 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 886 Lines: 23 On Wed, 22 Oct 2008, Christoph Lameter wrote: > On Wed, 22 Oct 2008, Miklos Szeredi wrote: > > > You are not actually listening to what I'm saying. Please read the > > question carefully again. > > That is the impression that I got from you too. I have listed the options > to get a reliable reference to an object and you seem to just skip over > it. Because you don't _need_ a reliable reference to access the contents of the dentry. The dentry is still there after being freed, as long as the underlying slab is there and isn't being reused for some other purpose. But you can easily ensure that from the slab code. Hmm? Miklos -- 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/