linux-kernel - Re: [PATCH] mm/filemap: add static for function __add_to_page_cache

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Message-ID: <CAFqt6zZU76NOF6uD_c1vRPmEHwOzLp9wEWAmSX2ficpQb0zf6g@mail.gmail.com>
Date:   Tue, 10 Nov 2020 08:39:24 +0530
From:   Souptick Joarder <jrdr.linux@...il.com>
To:     Alex Shi <alex.shi@...ux.alibaba.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Linux-MM <linux-mm@...ck.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm/filemap: add static for function __add_to_page_cache_locked

On Fri, Nov 6, 2020 at 4:55 PM Alex Shi <alex.shi@...ux.alibaba.com> wrote:
>
> Otherwise it cause gcc warning:
>           ^~~~~~~~~~~~~~~
> ../mm/filemap.c:830:14: warning: no previous prototype for
> ‘__add_to_page_cache_locked’ [-Wmissing-prototypes]
>  noinline int __add_to_page_cache_locked(struct page *page,
>               ^~~~~~~~~~~~~~~~~~~~~~~~~~

Is CONFIG_DEBUG_INFO_BTF enabled in your .config ?

>
> Signed-off-by: Alex Shi <alex.shi@...ux.alibaba.com>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: linux-mm@...ck.org
> Cc: linux-kernel@...r.kernel.org
> ---
>  mm/filemap.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/filemap.c b/mm/filemap.c
> index d90614f501da..249cf489f5df 100644
> --- a/mm/filemap.c
> +++ b/mm/filemap.c
> @@ -827,7 +827,7 @@ int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask)
>  }
>  EXPORT_SYMBOL_GPL(replace_page_cache_page);
>
> -noinline int __add_to_page_cache_locked(struct page *page,
> +static noinline int __add_to_page_cache_locked(struct page *page,
>                                         struct address_space *mapping,
>                                         pgoff_t offset, gfp_t gfp,
>                                         void **shadowp)
> --
> 1.8.3.1
>
>