1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/fs_pin.h b/include/linux/fs_pin.h
new file mode 100644
index 000000000000..f66525e72ccf
--- /dev/null
+++ b/include/linux/fs_pin.h
@@ -0,0 +1,17 @@
+#include <linux/fs.h>
+
+struct fs_pin {
+	atomic_long_t		count;
+	union {
+		struct {
+			struct hlist_node	s_list;
+			struct hlist_node	m_list;
+		};
+		struct rcu_head rcu;
+	};
+	void (*kill)(struct fs_pin *);
+};
+
+void pin_put(struct fs_pin *);
+void pin_remove(struct fs_pin *);
+void pin_insert(struct fs_pin *, struct vfsmount *);