Re: [patch 3/4] mm: filemap: pass __GFP_WRITE fromgrab_cache_page_write_begin()

From: Christoph Hellwig
Date: Tue Sep 20 2011 - 14:41:00 EST


On Tue, Sep 20, 2011 at 02:38:03PM -0400, Rik van Riel wrote:
> On 09/20/2011 10:25 AM, Christoph Hellwig wrote:
> >In addition to regular write shouldn't __do_fault and do_wp_page also
> >calls this if they are called on file backed mappings?
> >
>
> Probably not do_wp_page since it always creates an
> anonymous page, which are not very relevant to the
> dirty page cache accounting.

Well, it doesn't always - but for the case where it doesn't we
do not allocate a new page at all so you're right in the end :)
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