| From | "Matthew Wilcox (Oracle)" <> | Subject | [PATCH 13/75] mm: Add folio_pincount_ptr() | Date | Fri, 4 Feb 2022 19:57:50 +0000 |
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This is the folio equivalent of compound_pincount_ptr().
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: John Hubbard <jhubbard@nvidia.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: William Kucharski <william.kucharski@oracle.com> --- include/linux/mm.h | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/include/linux/mm.h b/include/linux/mm.h index dd7d6e95e43b..d5f0f2cfd552 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -891,6 +891,11 @@ static inline void destroy_compound_page(struct page *page) compound_page_dtors[page[1].compound_dtor](page); } +static inline atomic_t *folio_pincount_ptr(struct folio *folio) +{ + return &folio_page(folio, 1)->compound_pincount; +} + static inline int head_compound_pincount(struct page *head) { return atomic_read(compound_pincount_ptr(head)); -- 2.34.1
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