19 #define bkey_err(_k)	__bkey_err((_k).k)  argument
808 					 _end, _flags, _k, _do)		\
810 	struct bkey_s_c _k;						\
815 			(_k) = bch2_btree_iter_peek_max_type(_trans, &(_iter),	\
817 			if (!(_k).k)					\
820 			bkey_err(_k) ?: (_do);				\
828 #define for_each_btree_key_continue(_trans, _iter, _flags, _k, _do)	\  argument
829 	for_each_btree_key_max_continue(_trans, _iter, SPOS_MAX, _flags, _k, _do)
832 				_start, _end, _flags, _k, _do)		\
840 	for_each_btree_key_max_continue(_trans, _iter, _end, _flags, _k, _do);\
844 			   _start, _flags, _k, _do)			\
846 				 SPOS_MAX, _flags, _k, _do)
849 				   _start, _flags, _k, _do)		\
852 	struct bkey_s_c _k;						\
860 			(_k) = bch2_btree_iter_peek_prev_type(_trans, &(_iter),	\
862 			if (!(_k).k)					\
865 			bkey_err(_k) ?: (_do);				\
874 				  _start, _iter_flags, _k,		\
877 	for_each_btree_key(_trans, _iter, _btree_id, _start, _iter_flags, _k,\
882 				  _start, _iter_flags, _k,		\
885 	for_each_btree_key_reverse(_trans, _iter, _btree_id, _start, _iter_flags, _k,\
890 				  _start, _end, _iter_flags, _k,	\
893 	for_each_btree_key_max(_trans, _iter, _btree_id, _start, _end, _iter_flags, _k,\
901 			   _start, _end, _flags, _k, _ret)		\
904 	     (_k) = bch2_btree_iter_peek_max_type(_trans, &(_iter), _end, _flags),\
905 	     !((_ret) = bkey_err(_k)) && (_k).k;			\
908 #define for_each_btree_key_max_continue_norestart(_trans, _iter, _end, _flags, _k, _ret)\  argument
910 	     (_k) = bch2_btree_iter_peek_max_type(_trans, &(_iter), _end, _flags),	\
911 	     !((_ret) = bkey_err(_k)) && (_k).k;				\
915 			   _start, _flags, _k, _ret)			\
917 					  SPOS_MAX, _flags, _k, _ret)
920 					     _start, _flags, _k, _ret)		\
923 	     (_k) = bch2_btree_iter_peek_prev_type(_trans, &(_iter), _flags),	\
924 	     !((_ret) = bkey_err(_k)) && (_k).k;				\
927 #define for_each_btree_key_continue_norestart(_trans, _iter, _flags, _k, _ret)	\  argument
928 	for_each_btree_key_max_continue_norestart(_trans, _iter, SPOS_MAX, _flags, _k, _ret)