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Date:   Tue, 10 Aug 2021 22:18:17 +0100
From:   David Howells <>
To:     "Matthew Wilcox (Oracle)" <>
        Christoph Hellwig <>
Subject: Re: [PATCH v14 068/138] mm/writeback: Add folio_mark_dirty()

Matthew Wilcox (Oracle) <> wrote:

> Reimplement set_page_dirty() as a wrapper around folio_mark_dirty().
> There is no change to filesystems as they were already being called
> with the compound_head of the page being marked dirty.  We avoid
> several calls to compound_head(), both statically (through
> using folio_test_dirty() instead of PageDirty() and dynamically by
> calling folio_mapping() instead of page_mapping().
> Also return bool instead of int to show the range of values actually
> returned, and add kernel-doc.
> Signed-off-by: Matthew Wilcox (Oracle) <>
> Reviewed-by: Christoph Hellwig <>

Reviewed-by: David Howells <>

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