754 	u64 num_refs;  in btrfs_lookup_extent_info()  local
807 			num_refs = btrfs_extent_refs(leaf, ei);  in btrfs_lookup_extent_info()
815 			num_refs = btrfs_extent_refs_v0(leaf, ei0);  in btrfs_lookup_extent_info()
822 		BUG_ON(num_refs == 0);  in btrfs_lookup_extent_info()
824 		num_refs = 0;  in btrfs_lookup_extent_info()
855 			BUG_ON(num_refs == 0);  in btrfs_lookup_extent_info()
857 		num_refs += head->node.ref_mod;  in btrfs_lookup_extent_info()
863 	WARN_ON(num_refs == 0);  in btrfs_lookup_extent_info()
865 		*refs = num_refs;  in btrfs_lookup_extent_info()
1193 	u32 num_refs;  in insert_extent_data_ref()  local
1220 			num_refs = btrfs_shared_data_ref_count(leaf, ref);  in insert_extent_data_ref()
1221 			num_refs += refs_to_add;  in insert_extent_data_ref()
1222 			btrfs_set_shared_data_ref_count(leaf, ref, num_refs);  in insert_extent_data_ref()
1250 			num_refs = btrfs_extent_data_ref_count(leaf, ref);  in insert_extent_data_ref()
1251 			num_refs += refs_to_add;  in insert_extent_data_ref()
1252 			btrfs_set_extent_data_ref_count(leaf, ref, num_refs);  in insert_extent_data_ref()
1271 	u32 num_refs = 0;  in remove_extent_data_ref()  local
1280 		num_refs = btrfs_extent_data_ref_count(leaf, ref1);  in remove_extent_data_ref()
1284 		num_refs = btrfs_shared_data_ref_count(leaf, ref2);  in remove_extent_data_ref()
1290 		num_refs = btrfs_ref_count_v0(leaf, ref0);  in remove_extent_data_ref()
1296 	BUG_ON(num_refs < refs_to_drop);  in remove_extent_data_ref()
1297 	num_refs -= refs_to_drop;  in remove_extent_data_ref()
1299 	if (num_refs == 0) {  in remove_extent_data_ref()
1304 			btrfs_set_extent_data_ref_count(leaf, ref1, num_refs);  in remove_extent_data_ref()
1306 			btrfs_set_shared_data_ref_count(leaf, ref2, num_refs);  in remove_extent_data_ref()
1312 			btrfs_set_ref_count_v0(leaf, ref0, num_refs);  in remove_extent_data_ref()
1328 	u32 num_refs = 0;  in extent_data_ref_count()  local
1336 			num_refs = btrfs_extent_data_ref_count(leaf, ref1);  in extent_data_ref_count()
1339 			num_refs = btrfs_shared_data_ref_count(leaf, ref2);  in extent_data_ref_count()
1344 		num_refs = btrfs_extent_data_ref_count(leaf, ref1);  in extent_data_ref_count()
1348 		num_refs = btrfs_shared_data_ref_count(leaf, ref2);  in extent_data_ref_count()
1354 		num_refs = btrfs_ref_count_v0(leaf, ref0);  in extent_data_ref_count()
1359 	return num_refs;  in extent_data_ref_count()