linux-kernel - Re: netfilter: active obj WARN when cleaning up

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Message-ID: <20131202212235.GA1297@kroah.com>
Date:	Mon, 2 Dec 2013 13:22:35 -0800
From:	Greg KH <greg@...ah.com>
To:	Christoph Lameter <cl@...ux.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Pablo Neira Ayuso <pablo@...filter.org>,
	Sasha Levin <sasha.levin@...cle.com>,
	Patrick McHardy <kaber@...sh.net>, kadlec@...ckhole.kfki.hu,
	"David S. Miller" <davem@...emloft.net>,
	netfilter-devel@...r.kernel.org, coreteam@...filter.org,
	netdev@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: netfilter: active obj WARN when cleaning up

On Mon, Dec 02, 2013 at 07:41:15PM +0000, Christoph Lameter wrote:
> On Mon, 2 Dec 2013, Greg KH wrote:
> 
> > No, the release callback is in the kobj_type, not the kobject itself.
> 
> Ahh... Ok. Patch follows:
> 
> 
> Subject: slub: use sysfs'es release mechanism for kmem_cache
> 
> Sysfs has a release mechanism. Use that to release the
> kmem_cache structure if CONFIG_SYSFS is enabled.
> 
> Signed-off-by: Christoph Lameter <cl@...ux.com>

That looks good, if you fix the indentation issue :)

> 
> Index: linux/include/linux/slub_def.h
> ===================================================================
> --- linux.orig/include/linux/slub_def.h	2013-12-02 13:31:07.395905824 -0600
> +++ linux/include/linux/slub_def.h	2013-12-02 13:31:07.385906101 -0600
> @@ -98,4 +98,8 @@ struct kmem_cache {
>  	struct kmem_cache_node *node[MAX_NUMNODES];
>  };
> 
> +#ifdef CONFIG_SYSFS
> +#define SLAB_SUPPORTS_SYSFS

Why even define this?  Why not just use CONFIG_SYSFS?

thanks,

greg k-h
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