linux-kernel - Re: [PATCH net-next] ipvs: Use struct

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Message-ID: <20190211234033.wwpygxamqwvsuxmv@salvia>
Date:   Tue, 12 Feb 2019 00:40:33 +0100
From:   Pablo Neira Ayuso <pablo@...filter.org>
To:     Simon Horman <horms@...ge.net.au>
Cc:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Wensong Zhang <wensong@...ux-vs.org>,
        Julian Anastasov <ja@....bg>,
        Jozsef Kadlecsik <kadlec@...ckhole.kfki.hu>,
        Florian Westphal <fw@...len.de>,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        lvs-devel@...r.kernel.org, netfilter-devel@...r.kernel.org,
        coreteam@...filter.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] ipvs: Use struct_size() helper

On Fri, Feb 08, 2019 at 10:56:48AM +0100, Simon Horman wrote:
> On Thu, Feb 07, 2019 at 06:44:56PM -0600, Gustavo A. R. Silva wrote:
> > One of the more common cases of allocation size calculations is finding
> > the size of a structure that has a zero-sized array at the end, along
> > with memory for some number of elements for that array. For example:
> > 
> > struct foo {
> >     int stuff;
> >     struct boo entry[];
> > };
> > 
> > size = sizeof(struct foo) + count * sizeof(struct boo);
> > instance = alloc(size, GFP_KERNEL)
> > 
> > Instead of leaving these open-coded and prone to type mistakes, we can
> > now use the new struct_size() helper:
> > 
> > size = struct_size(instance, entry, count);
> > 
> > This code was detected with the help of Coccinelle.
> > 
> > Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
> 
> Acked-by: Simon Horman <horms+renesas@...ge.net.au>
> 
> Pablo, could you consider applying this?

Applied, thanks!