linux-kernel - Re: [PATCH][next] ice: Use struct

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Message-ID: <7b8d499ab640820685ddd455a26c81fb139d3c5e.camel@intel.com>
Date:   Fri, 29 Mar 2019 15:36:21 -0700
From:   Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        "David S. Miller" <davem@...emloft.net>
Cc:     intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH][next] ice: Use struct_size() helper

On Thu, 2019-03-28 at 11:34 -0500, 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>
> ---
>  drivers/net/ethernet/intel/ice/ice_sched.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Thanks Gustavo, I will queue this up.

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