| From | "Matthew Wilcox (Oracle)" <> | Subject | [PATCH 23/75] mm/gup: Convert gup_huge_pud() to use a folio | Date | Fri, 4 Feb 2022 19:58:00 +0000 |
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Use the new folio-based APIs.
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> --- mm/gup.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/mm/gup.c b/mm/gup.c index ca8262392ce3..6d7a2ba6790b 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -2544,7 +2544,8 @@ static int gup_huge_pud(pud_t orig, pud_t *pudp, unsigned long addr, unsigned long end, unsigned int flags, struct page **pages, int *nr) { - struct page *head, *page; + struct page *page; + struct folio *folio; int refs; if (!pud_access_permitted(orig, flags & FOLL_WRITE)) @@ -2560,17 +2561,17 @@ static int gup_huge_pud(pud_t orig, pud_t *pudp, unsigned long addr, page = nth_page(pud_page(orig), (addr & ~PUD_MASK) >> PAGE_SHIFT); refs = record_subpages(page, addr, end, pages + *nr); - head = try_grab_compound_head(pud_page(orig), refs, flags); - if (!head) + folio = try_grab_folio(page, refs, flags); + if (!folio) return 0; if (unlikely(pud_val(orig) != pud_val(*pudp))) { - put_compound_head(head, refs, flags); + gup_put_folio(folio, refs, flags); return 0; } *nr += refs; - SetPageReferenced(head); + folio_set_referenced(folio); return 1; } -- 2.34.1
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