Now that compound_head() accepts a const struct page pointer, these two
functions can be marked as not modifying the page pointer they are passed.
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
include/linux/page_ref.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux/page_ref.h b/include/linux/page_ref.h
index f3318f34fc54..7ad46f45df39 100644
--- a/include/linux/page_ref.h
+++ b/include/linux/page_ref.h
@@ -62,12 +62,12 @@ static inline void __page_ref_unfreeze(struct page *page, int v)
#endif
-static inline int page_ref_count(struct page *page)
+static inline int page_ref_count(const struct page *page)
{
return atomic_read(&page->_refcount);
}
-static inline int page_count(struct page *page)
+static inline int page_count(const struct page *page)
{
return atomic_read(&compound_head(page)->_refcount);
}
--
2.30.2
