linux-kernel - Re: [PATCH v14 068/138] mm/writeback: Add folio_mark

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Date:   Tue, 10 Aug 2021 22:18:17 +0100
From:   David Howells <dhowells@...hat.com>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     dhowells@...hat.com, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
        Christoph Hellwig <hch@....de>
Subject: Re: [PATCH v14 068/138] mm/writeback: Add folio_mark_dirty()

Matthew Wilcox (Oracle) <willy@...radead.org> 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) <willy@...radead.org>
> Reviewed-by: Christoph Hellwig <hch@....de>

Reviewed-by: David Howells <dhowells@...hat.com>