linux-kernel - Re: [PATCH] lib/parser.c: switch match_number() over to use match

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Message-ID: <20180905013915.GA1928@sol.localdomain>
Date:   Tue, 4 Sep 2018 18:39:16 -0700
From:   Eric Biggers <ebiggers@...nel.org>
To:     linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] lib/parser.c: switch match_number() over to use
 match_strdup()

On Thu, Aug 30, 2018 at 12:47:27PM -0700, Eric Biggers wrote:
> From: Eric Biggers <ebiggers@...gle.com>
> 
> This simplifies the code.  No change in behavior.
> 
> Signed-off-by: Eric Biggers <ebiggers@...gle.com>
> ---
>  lib/parser.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/lib/parser.c b/lib/parser.c
> index 0142ef28f0eb..96656a6dd59b 100644
> --- a/lib/parser.c
> +++ b/lib/parser.c
> @@ -131,13 +131,10 @@ static int match_number(substring_t *s, int *result, int base)
>  	char *buf;
>  	int ret;
>  	long val;
> -	size_t len = s->to - s->from;
>  
> -	buf = kmalloc(len + 1, GFP_KERNEL);
> +	buf = match_strdup(s);
>  	if (!buf)
>  		return -ENOMEM;
> -	memcpy(buf, s->from, len);
> -	buf[len] = '\0';
>  
>  	ret = 0;
>  	val = simple_strtol(buf, &endp, base);
> -- 

Hi Andrew, are you planning to take this patch too?  The similar patch

  lib/parser.c: switch match_u64int() over to use match_strdup()

is in -mm now, but this one is not.

Thanks,

- Eric