linux-kernel - Re: [PATCH] Simplify some code to use the container

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Message-ID: <Pine.LNX.4.64.0701040258450.2450@localhost.localdomain>
Date:	Thu, 4 Jan 2007 02:59:20 -0500 (EST)
From:	"Robert P. J. Day" <rpjday@...dspring.com>
To:	Andrew Morton <akpm@...l.org>
cc:	Linux kernel mailing list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Simplify some code to use the container_of() macro.

On Wed, 3 Jan 2007, Andrew Morton wrote:

> On Sun, 31 Dec 2006 15:55:22 -0500 (EST)
> "Robert P. J. Day" <rpjday@...dspring.com> wrote:
>
> > --- a/net/ipv4/netfilter/nf_nat_core.c
> > +++ b/net/ipv4/netfilter/nf_nat_core.c
> > @@ -168,7 +168,7 @@ find_appropriate_src(const struct nf_conntrack_tuple *tuple,
> >
> >  	read_lock_bh(&nf_nat_lock);
> >  	list_for_each_entry(nat, &bysource[h], info.bysource) {
> > -		ct = (struct nf_conn *)((char *)nat - offsetof(struct nf_conn, data));
> > +		ct = container_of(nat, struct nf_conn, data);
>
> This one isn't right.  Please always carefully compile-test these
> things.

whoops, you're right, i'm not sure why i didn't catch that.  my
apologies.

rday
-
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