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| author |   Matthew Wilcox (Oracle) <willy@infradead.org> | 2022-02-04 10:27:40 -0500 |
|---|---|---|
| committer | Matthew Wilcox (Oracle) <willy@infradead.org> | 2022-03-21 12:56:35 -0400 |
| commit | ece1ed7bfa1208b527b3dc90bb45c55e0d139a88 (patch) | |
| tree | 2e842c73049d93126fe1fbbd16cd72cd5eacbc97 /mm/internal.h | |
| parent | mm: Turn page_maybe_dma_pinned() into folio_maybe_dma_pinned() (diff) | |
| download | linux-dev-ece1ed7bfa1208b527b3dc90bb45c55e0d139a88.tar.xz linux-dev-ece1ed7bfa1208b527b3dc90bb45c55e0d139a88.zip | |
mm/gup: Add try_get_folio() and try_grab_folio()
Convert try_get_compound_head() into try_get_folio() and convert
try_grab_compound_head() into try_grab_folio(). Add a temporary
try_grab_compound_head() wrapper around try_grab_folio() to let us
convert callers individually.
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 'mm/internal.h')
| -rw-r--r-- | mm/internal.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/mm/internal.h b/mm/internal.h index 3756dd5d2c92..98b97cb5a97b 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -737,4 +737,9 @@ int numa_migrate_prep(struct page *page, struct vm_area_struct *vma, void free_zone_device_page(struct page *page); +/* + * mm/gup.c + */ +struct folio *try_grab_folio(struct page *page, int refs, unsigned int flags); + #endif /* __MM_INTERNAL_H */ |