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Subject: Re: [PATCH v14 074/138] mm/writeback: Add folio_clear_dirty_for_io()
To:     "Matthew Wilcox (Oracle)" <willy@infradead.org>,
        linux-kernel@vger.kernel.org
Cc:     linux-mm@kvack.org, linux-fsdevel@vger.kernel.org,
        Christoph Hellwig <hch@lst.de>
References: <20210715033704.692967-1-willy@infradead.org>
 <20210715033704.692967-75-willy@infradead.org>
From:   Vlastimil Babka <vbabka@suse.cz>
Message-ID: <24a7db9a-0c61-44ec-3ffe-bd6462316a9a@suse.cz>
Date:   Thu, 12 Aug 2021 18:24:41 +0200
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On 7/15/21 5:36 AM, Matthew Wilcox (Oracle) wrote:
> Transform clear_page_dirty_for_io() into folio_clear_dirty_for_io()
> and add a compatibility wrapper.  Also move the declaration to pagemap.h
> as this is page cache functionality that doesn't need to be used by the
> rest of the kernel.
> 
> Increases the size of the kernel by 79 bytes.  While we remove a few
> calls to compound_head(), we add a call to folio_nr_pages() to get the
> stats correct for the eventual support of multi-page folios.
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
> Reviewed-by: Christoph Hellwig <hch@lst.de>

Acked-by: Vlastimil Babka <vbabka@suse.cz>