Return-Path: <linux-kernel-owner+w=401wt.eu-S1754660AbXL1ADL@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1754660AbXL1ADL (ORCPT <rfc822;w@1wt.eu>);
	Thu, 27 Dec 2007 19:03:11 -0500
Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753838AbXL1AC6
	(ORCPT <rfc822;linux-kernel-outgoing>);
	Thu, 27 Dec 2007 19:02:58 -0500
Received: from netops-testserver-3-out.sgi.com ([192.48.171.28]:57734 "EHLO
	relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org
	with ESMTP id S1753567AbXL1AC5 (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Thu, 27 Dec 2007 19:02:57 -0500
Date: Thu, 27 Dec 2007 16:02:56 -0800 (PST)
From: Christoph Lameter <clameter@sgi.com>
X-X-Sender: clameter@schroedinger.engr.sgi.com
To: Al Viro <viro@ZenIV.linux.org.uk>
cc: Steven Rostedt <rostedt@goodmis.org>,
       Peter Zijlstra <a.p.zijlstra@chello.nl>,
       LKML <linux-kernel@vger.kernel.org>, "Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: SLUB sysfs support
In-Reply-To: <20071227235804.GJ27894@ZenIV.linux.org.uk>
Message-ID: <Pine.LNX.4.64.0712271601200.1294@schroedinger.engr.sgi.com>
References: <20071224034530.GB16658@thunk.org>
 <Pine.LNX.4.64.0712241120230.8849@schroedinger.engr.sgi.com>
 <20071224233701.GB9784@kernel.org> <Pine.LNX.4.64.0712261330030.16904@schroedinger.engr.sgi.com>
 <20071226221631.GD27894@ZenIV.linux.org.uk>
 <Pine.LNX.4.64.0712262149000.19009@schroedinger.engr.sgi.com>
 <Pine.LNX.4.64.0712271222190.31582@schroedinger.engr.sgi.com>
 <20071227225947.GH27894@ZenIV.linux.org.uk> <Pine.LNX.4.64.0712271508080.917@schroedinger.engr.sgi.com>
 <Pine.LNX.4.64.0712271552420.1154@schroedinger.engr.sgi.com>
 <20071227235804.GJ27894@ZenIV.linux.org.uk>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 1309
Lines: 33

On Thu, 27 Dec 2007, Al Viro wrote:

> On Thu, Dec 27, 2007 at 03:53:43PM -0800, Christoph Lameter wrote:
> > On Thu, 27 Dec 2007, Christoph Lameter wrote:
> > 
> > > > a) remove symlink when slab goes away
> > > 
> > > Ok. Need to think about how to code that.
> > 
> > How do I iterate over all symlinks in /sys/kernel/slab/*?
> > 
> > I remember trying to do it before and not being able to find a sysfs 
> > method for that.
> 
> What the hell do you need that for?  You have an obvious moment when
> /sys/kernel/slab/cache_name -> <whatever> should be gone - it's when
> you remove the slab called cache_name.  And at that point you don't
> need to iterate over anything - you have the exact name, for fsck sake...
> 
> Why would you want these symlinks to stick around for longer than that?

/sys/kernel/slab/cache_name is a real directory but then there are the 
aliases in /sys/kernel/slab/alias_name pointing to that directory that 
also have to be removed.

So I need to scan for symlinks in /sys/kernel/slab/* pointing to 
/sys/kernel/slab/cache_name.

--
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/