linux-kernel - Re: [PATCH 2/2] um: vector: Use 'kmalloc

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Date:   Wed, 2 Jan 2019 16:34:22 +0000
From:   Anton Ivanov <anton.ivanov@...bridgegreys.com>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        jdike@...toit.com, richard@....at, rppt@...ux.vnet.ibm.com,
        akpm@...ux-foundation.org, yuehaibing@...wei.com,
        keescook@...omium.org
Cc:     linux-um@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 2/2] um: vector: Use 'kmalloc_array' instead of 'kmalloc'



On 12/26/18 7:54 AM, Christophe JAILLET wrote:
> Use 'kmalloc_array' instead of 'kmalloc' when appropriate.
> 
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> ---
> I don't know why it has not already been replaced in 6da2ec56059c
> ("treewide: kmalloc() -> kmalloc_array()".
> ---
>   arch/um/drivers/vector_kern.c | 8 ++++----
>   1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/um/drivers/vector_kern.c b/arch/um/drivers/vector_kern.c
> index 5b917716289d..dee5246bda81 100644
> --- a/arch/um/drivers/vector_kern.c
> +++ b/arch/um/drivers/vector_kern.c
> @@ -507,12 +507,12 @@ static struct vector_queue *create_queue(
>   		return NULL;
>   	result->max_depth = max_size;
>   	result->dev = vp->dev;
> -	result->mmsg_vector = kmalloc(
> -		(sizeof(struct mmsghdr) * max_size), GFP_KERNEL);
> +	result->mmsg_vector = kmalloc_array(max_size, sizeof(struct mmsghdr),
> +					    GFP_KERNEL);
>   	if (result->mmsg_vector == NULL)
>   		goto out_mmsg_fail;
> -	result->skbuff_vector = kmalloc(
> -		(sizeof(void *) * max_size), GFP_KERNEL);
> +	result->skbuff_vector = kmalloc_array(max_size, sizeof(void *),
> +					      GFP_KERNEL);
>   	if (result->skbuff_vector == NULL)
>   		goto out_skb_fail;
>   
> 

Acked-by: Anton Ivanov <anton.ivanov at cambridgegreys.com>

-- 
Anton R. Ivanov

Cambridge Greys Limited, England and Wales company No 10273661
http://www.cambridgegreys.com/