816 	u64 num_refs;  in btrfs_lookup_extent_info()  local
869 			num_refs = btrfs_extent_refs(leaf, ei);  in btrfs_lookup_extent_info()
877 			num_refs = btrfs_extent_refs_v0(leaf, ei0);  in btrfs_lookup_extent_info()
884 		BUG_ON(num_refs == 0);  in btrfs_lookup_extent_info()
886 		num_refs = 0;  in btrfs_lookup_extent_info()
917 			BUG_ON(num_refs == 0);  in btrfs_lookup_extent_info()
919 		num_refs += head->node.ref_mod;  in btrfs_lookup_extent_info()
925 	WARN_ON(num_refs == 0);  in btrfs_lookup_extent_info()
927 		*refs = num_refs;  in btrfs_lookup_extent_info()
1255 	u32 num_refs;  in insert_extent_data_ref()  local
1282 			num_refs = btrfs_shared_data_ref_count(leaf, ref);  in insert_extent_data_ref()
1283 			num_refs += refs_to_add;  in insert_extent_data_ref()
1284 			btrfs_set_shared_data_ref_count(leaf, ref, num_refs);  in insert_extent_data_ref()
1312 			num_refs = btrfs_extent_data_ref_count(leaf, ref);  in insert_extent_data_ref()
1313 			num_refs += refs_to_add;  in insert_extent_data_ref()
1314 			btrfs_set_extent_data_ref_count(leaf, ref, num_refs);  in insert_extent_data_ref()
1333 	u32 num_refs = 0;  in remove_extent_data_ref()  local
1342 		num_refs = btrfs_extent_data_ref_count(leaf, ref1);  in remove_extent_data_ref()
1346 		num_refs = btrfs_shared_data_ref_count(leaf, ref2);  in remove_extent_data_ref()
1352 		num_refs = btrfs_ref_count_v0(leaf, ref0);  in remove_extent_data_ref()
1358 	BUG_ON(num_refs < refs_to_drop);  in remove_extent_data_ref()
1359 	num_refs -= refs_to_drop;  in remove_extent_data_ref()
1361 	if (num_refs == 0) {  in remove_extent_data_ref()
1366 			btrfs_set_extent_data_ref_count(leaf, ref1, num_refs);  in remove_extent_data_ref()
1368 			btrfs_set_shared_data_ref_count(leaf, ref2, num_refs);  in remove_extent_data_ref()
1374 			btrfs_set_ref_count_v0(leaf, ref0, num_refs);  in remove_extent_data_ref()
1389 	u32 num_refs = 0;  in extent_data_ref_count()  local
1397 			num_refs = btrfs_extent_data_ref_count(leaf, ref1);  in extent_data_ref_count()
1400 			num_refs = btrfs_shared_data_ref_count(leaf, ref2);  in extent_data_ref_count()
1405 		num_refs = btrfs_extent_data_ref_count(leaf, ref1);  in extent_data_ref_count()
1409 		num_refs = btrfs_shared_data_ref_count(leaf, ref2);  in extent_data_ref_count()
1415 		num_refs = btrfs_ref_count_v0(leaf, ref0);  in extent_data_ref_count()
1420 	return num_refs;  in extent_data_ref_count()