| Date | Mon, 28 Jun 2021 15:40:50 +0300 | From | "Kirill A. Shutemov" <> | Subject | Re: [PATCH v12 11/33] mm/lru: Add folio LRU functions |
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On Tue, Jun 22, 2021 at 12:40:56PM +0100, Matthew Wilcox (Oracle) 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: Christoph Hellwig <hch@lst.de> > Reviewed-by: David Howells <dhowells@redhat.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
-- Kirill A. Shutemov
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