static inline void btrfs_init_generic_ref(struct btrfs_ref *generic_ref,
					  int action, u64 bytenr, u64 len,
					  u64 parent, u64 owning_root)
void btrfs_init_generic_ref(struct btrfs_ref *generic_ref, int action, u64 bytenr,
			    u64 len, u64 parent, u64 owning_root)