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| author |  Matthew Wilcox (Oracle) <willy@infradead.org>
| 2021-12-27 18:28:58 -0500 |
|---|---|---|
| committer | Matthew Wilcox (Oracle) <willy@infradead.org>
| 2022-03-21 12:56:35 -0400 |
| commit | 3d11b225aeb184bc3dc9b4b27b302815a7c531aa (patch) | |
| tree | e3872ad2a6ad6ff05550663f9d2aacd8b93a9c1a /include/linux/mm.h | |
| parent | mm: Make compound_pincount always available (diff) | |
| download | linux-3d11b225aeb184bc3dc9b4b27b302815a7c531aa.tar.gz linux-3d11b225aeb184bc3dc9b4b27b302815a7c531aa.tar.bz2 linux-3d11b225aeb184bc3dc9b4b27b302815a7c531aa.zip | |
mm: Add folio_pincount_ptr()
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>
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index c64bd0b67d75..c45739dfdd04 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1544,6 +1544,11 @@ static inline unsigned long folio_pfn(struct folio *folio) return page_to_pfn(&folio->page); } +static inline atomic_t *folio_pincount_ptr(struct folio *folio) +{ + return &folio_page(folio, 1)->compound_pincount; +} + /* MIGRATE_CMA and ZONE_MOVABLE do not allow pin pages */ #ifdef CONFIG_MIGRATION static inline bool is_pinnable_page(struct page *page) |