linux-kernel - Re: [PATCH v14 68/74] dax: Convert dax_lock

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Message-ID: <20180629173055.GA2973@linux.intel.com>
Date:   Fri, 29 Jun 2018 11:30:55 -0600
From:   Ross Zwisler <ross.zwisler@...ux.intel.com>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jan Kara <jack@...e.cz>,
        Jeff Layton <jlayton@...hat.com>,
        Lukas Czerner <lczerner@...hat.com>,
        Ross Zwisler <ross.zwisler@...ux.intel.com>,
        Christoph Hellwig <hch@....de>,
        Goldwyn Rodrigues <rgoldwyn@...e.com>,
        Nicholas Piggin <npiggin@...il.com>,
        Ryusuke Konishi <konishi.ryusuke@....ntt.co.jp>,
        linux-nilfs@...r.kernel.org, Jaegeuk Kim <jaegeuk@...nel.org>,
        Chao Yu <yuchao0@...wei.com>,
        linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [PATCH v14 68/74] dax: Convert dax_lock_page to XArray

On Sat, Jun 16, 2018 at 07:00:46PM -0700, Matthew Wilcox wrote:
> Signed-off-by: Matthew Wilcox <willy@...radead.org>
> ---
<>
> +static void *dax_make_page_entry(struct page *page, void *entry)
> +{
> +	pfn_t pfn = page_to_pfn_t(page);
> +	return dax_make_entry(pfn, dax_is_pmd_entry(entry));
> +}

This function is defined and never used, so we get:

fs/dax.c:106:14: warning: ‘dax_make_page_entry’ defined but not used [-Wunused-function]
 static void *dax_make_page_entry(struct page *page, void *entry)
  ^~~~~~~~~~~~~~~~~~~