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SubjectRe: [PATCH v4 01/16] mm: Make pagecache tagged lookups return only head pages
On Thu, Nov 12, 2020 at 09:26:26PM +0000, Matthew Wilcox (Oracle) wrote:
> Pagecache tags are used for dirty page writeback. Since dirtiness is
> tracked on a per-THP basis, we only want to return the head page rather
> than each subpage of a tagged page. All the filesystems which use huge
> pages today are in-memory, so there are no tagged huge pages today.
>
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
> Reviewed-by: Jan Kara <jack@suse.cz>
> Reviewed-by: William Kucharski <william.kucharski@oracle.com>

Looks good,

Reviewed-by: Christoph Hellwig <hch@lst.de>

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