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From:   Namjae Jeon <linkinjeon@gmail.com>
Date:   Sat, 21 Mar 2020 08:24:18 +0900
Message-ID: <CAKYAXd-NGQvMoYg=TV1T=8OZdQcYwcncK_Hix8OkF0GqmYr9Wg@mail.gmail.com>
Subject: Re: [PATCH v9 16/25] fs: Convert mpage_readpages to mpage_readahead
To:     Matthew Wilcox <willy@infradead.org>
Cc:     Andrew Morton <akpm@linux-foundation.org>,
        linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org,
        linux-erofs@lists.ozlabs.org, linux-ext4@vger.kernel.org,
        linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com,
        ocfs2-devel@oss.oracle.com, linux-xfs@vger.kernel.org,
        Junxiao Bi <junxiao.bi@oracle.com>,
        Joseph Qi <joseph.qi@linux.alibaba.com>,
        Dave Chinner <dchinner@redhat.com>,
        John Hubbard <jhubbard@nvidia.com>,
        Christoph Hellwig <hch@lst.de>,
        William Kucharski <william.kucharski@oracle.com>
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> diff --git a/drivers/staging/exfat/exfat_super.c
> b/drivers/staging/exfat/exfat_super.c
> index b81d2a87b82e..96aad9b16d31 100644
> --- a/drivers/staging/exfat/exfat_super.c
> +++ b/drivers/staging/exfat/exfat_super.c
Maybe, You should change fs/exfat instead of staging/exfat that is
gone from -next ?

> @@ -3002,10 +3002,9 @@ static int exfat_readpage(struct file *file, struct
> page *page)
>  	return  mpage_readpage(page, exfat_get_block);
>  }
>
> -static int exfat_readpages(struct file *file, struct address_space
> *mapping,
> -			   struct list_head *pages, unsigned int nr_pages)
> +static void exfat_readahead(struct readahead_control *rac)
>  {
> -	return  mpage_readpages(mapping, pages, nr_pages, exfat_get_block);
> +	mpage_readahead(rac, exfat_get_block);
>  }
>
>  static int exfat_writepage(struct page *page, struct writeback_control
> *wbc)
> @@ -3104,7 +3103,7 @@ static sector_t _exfat_bmap(struct address_space
> *mapping, sector_t block)
>
>  static const struct address_space_operations exfat_aops = {
>  	.readpage    = exfat_readpage,
> -	.readpages   = exfat_readpages,
> +	.readahead   = exfat_readahead,
>  	.writepage   = exfat_writepage,
>  	.writepages  = exfat_writepages,
>  	.write_begin = exfat_write_begin,