From 83afb52e47d5e31c7d58c07a6d31c43b5ef421a0 Mon Sep 17 00:00:00 2001 From: "Matthew Wilcox (Oracle)" Date: Wed, 22 Dec 2021 18:07:47 -0500 Subject: [PATCH] mm/gup: Convert gup_huge_pud() to use a folio Use the new folio-based APIs. Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Christoph Hellwig Reviewed-by: John Hubbard Reviewed-by: Jason Gunthorpe Reviewed-by: William Kucharski --- mm/gup.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/mm/gup.c b/mm/gup.c index 15de59333c3d..b6ca2364af8a 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -2524,7 +2524,8 @@ 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)) @@ -2540,17 +2541,17 @@ 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; }