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Subject[PATCH 23/75] mm/gup: Convert gup_huge_pud() to use a folio
Date
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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