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

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Date:	Mon, 2 Dec 2013 14:22:08 -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 09:55:49PM +0000, Christoph Lameter wrote:
> On Mon, 2 Dec 2013, Greg KH wrote:
> 
> > > Signed-off-by: Christoph Lameter <cl@...ux.com>
> >
> > That looks good, if you fix the indentation issue :)
> 
> Huh?

Your release function had 2 tabs for the lines, not one.

> > > 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?
> 
> Because not all slab allocators currently support SYSFS and there is the
> need to have different code now in slab_common.c depending on the
> configuration of the allocator.

But you are defining something that you only ever check once, why not
just use CONFIG_SYSFS instead as it makes more sense, not the other way
around.

thanks,

greg k-h
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