[PATCH v3 3/8] md: introduce safe_put_folio for folio support in RAID

From: Li Nan <[email protected]>

safe_put_page() will be removed after the last reference to it in RAID5
is removed.

Signed-off-by: Li Nan <[email protected]>
---
 drivers/md/md.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/md/md.h b/drivers/md/md.h
index 914b992a073b..7c0c38f09cc3 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -888,6 +888,12 @@ struct md_io_clone {
 	rcu_read_unlock();                  \
 } while (0)
 
+static inline void safe_folio_put(struct folio *folio)
+{
+	if (folio)
+		folio_put(folio);
+}
+
 static inline void safe_put_page(struct page *p)
 {
 	if (p) put_page(p);
-- 
2.39.2