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    SubjectRe: [PATCH v11 11/33] mm/lru: Add folio LRU functions
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    Matthew Wilcox (Oracle) <willy@infradead.org> wrote:

    > Handle arbitrary-order folios being added to the LRU. By definition,
    > all pages being added to the LRU were already head or base pages,
    > so define page wrappers around folio functions where the original
    > page functions involved calling compound_head() to manipulate flags,
    > but define folio wrappers around page functions where there's no need to
    > call compound_head(). The one thing that does change for those functions
    > is calling compound_nr() instead of thp_nr_pages(), in order to handle
    > arbitrary-sized folios.
    >
    > Saves 783 bytes of kernel text; no functions grow.
    >
    > Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
    > Reviewed-by: Yu Zhao <yuzhao@google.com>

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

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