linux-kernel - Re: [PATCH][TRIVIAL] mm/frontswap: fix uninit'ed variable warning

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Message-ID: <20120731152332.GL4789@phenom.dumpdata.com>
Date:	Tue, 31 Jul 2012 11:23:32 -0400
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Seth Jennings <sjenning@...ux.vnet.ibm.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	trivial@...nel.org
Subject: Re: [PATCH][TRIVIAL] mm/frontswap: fix uninit'ed variable warning

On Mon, Jul 30, 2012 at 02:47:44PM -0500, Seth Jennings wrote:
> Fixes uninitialized variable warning on 'type' in frontswap_shrink().
> type is set before use by __frontswap_unuse_pages() called by
> __frontswap_shrink() called by frontswap_shrink() before use by
> try_to_unuse().

OK, applied.
> 
> Signed-off-by: Seth Jennings <sjenning@...ux.vnet.ibm.com>
> ---
> Based on next-20120730
> 
>  mm/frontswap.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/mm/frontswap.c b/mm/frontswap.c
> index 6b3e71a..89dc399 100644
> --- a/mm/frontswap.c
> +++ b/mm/frontswap.c
> @@ -292,7 +292,7 @@ static int __frontswap_shrink(unsigned long target_pages,
>  void frontswap_shrink(unsigned long target_pages)
>  {
>  	unsigned long pages_to_unuse = 0;
> -	int type, ret;
> +	int uninitialized_var(type), ret;
>  
>  	/*
>  	 * we don't want to hold swap_lock while doing a very
> -- 
> 1.7.9.5
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