linux-kernel - Re: [PATCH][mm-next] mm: clean up build warning with unused variable ret2

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Message-ID: <1498040539.4735.3.camel@redhat.com>
Date:   Wed, 21 Jun 2017 06:22:19 -0400
From:   Jeff Layton <jlayton@...hat.com>
To:     Colin King <colin.king@...onical.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Johannes Weiner <hannes@...xchg.org>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Jan Kara <jack@...e.cz>, Michal Hocko <mhocko@...e.com>,
        Dave Chinner <dchinner@...hat.com>,
        Matthew Wilcox <mawilcox@...rosoft.com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        linux-mm@...ck.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH][mm-next] mm: clean up build warning with unused
 variable ret2

On Wed, 2017-06-21 at 11:14 +0100, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> Variable ret2 is unused and should be removed. Cleans up
> build warning:
> 
> warning: unused variable 'ret2' [-Wunused-variable]
> 
> Fixes: 4118ba44fa2cd040e ("mm: clean up error handling in write_one_page")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---
>  mm/page-writeback.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/mm/page-writeback.c b/mm/page-writeback.c
> index 64b75bd996a4..0b60cc7ddac2 100644
> --- a/mm/page-writeback.c
> +++ b/mm/page-writeback.c
> @@ -2377,7 +2377,7 @@ int do_writepages(struct address_space *mapping, struct writeback_control *wbc)
>  int write_one_page(struct page *page)
>  {
>  	struct address_space *mapping = page->mapping;
> -	int ret = 0, ret2;
> +	int ret = 0;
>  	struct writeback_control wbc = {
>  		.sync_mode = WB_SYNC_ALL,
>  		.nr_to_write = 1,


Thanks. I just squashed the same fix into the original patch this
morning after seeing the mail from Stephen. Tomorrow's linux-next pull
should pick up the corrected version.
-- 
Jeff Layton <jlayton@...hat.com>