On 1/2/22 13:57, Matthew Wilcox (Oracle) wrote:
This is the folio equivalent of compound_pincount_ptr().
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
include/linux/mm_types.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index c3a6e6209600..09d9e2c4a2c5 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -309,6 +309,12 @@ static inline atomic_t *compound_mapcount_ptr(struct page *page)
return &page[1].compound_mapcount;
}
+static inline atomic_t *folio_pincount_ptr(struct folio *folio)
+{
+ struct page *tail = &folio->page + 2;
+ return &tail->hpage_pinned_refcount;
+}
+
static inline atomic_t *compound_pincount_ptr(struct page *page)
{
return &page[2].hpage_pinned_refcount;
Reviewed-by: John Hubbard <jhubbard@xxxxxxxxxx>
thanks,
--
John Hubbard
NVIDIA
