816 	u64 num_refs;  in btrfs_lookup_extent_info()  local
868 			num_refs = btrfs_extent_refs(leaf, ei);  in btrfs_lookup_extent_info()
881 		BUG_ON(num_refs == 0);  in btrfs_lookup_extent_info()
883 		num_refs = 0;  in btrfs_lookup_extent_info()
914 			BUG_ON(num_refs == 0);  in btrfs_lookup_extent_info()
916 		num_refs += head->ref_mod;  in btrfs_lookup_extent_info()
922 	WARN_ON(num_refs == 0);  in btrfs_lookup_extent_info()
924 		*refs = num_refs;  in btrfs_lookup_extent_info()
1217 	u32 num_refs;  in insert_extent_data_ref()  local
1244 			num_refs = btrfs_shared_data_ref_count(leaf, ref);  in insert_extent_data_ref()
1245 			num_refs += refs_to_add;  in insert_extent_data_ref()
1246 			btrfs_set_shared_data_ref_count(leaf, ref, num_refs);  in insert_extent_data_ref()
1274 			num_refs = btrfs_extent_data_ref_count(leaf, ref);  in insert_extent_data_ref()
1275 			num_refs += refs_to_add;  in insert_extent_data_ref()
1276 			btrfs_set_extent_data_ref_count(leaf, ref, num_refs);  in insert_extent_data_ref()
1294 	u32 num_refs = 0;  in remove_extent_data_ref()  local
1303 		num_refs = btrfs_extent_data_ref_count(leaf, ref1);  in remove_extent_data_ref()
1307 		num_refs = btrfs_shared_data_ref_count(leaf, ref2);  in remove_extent_data_ref()
1316 	BUG_ON(num_refs < refs_to_drop);  in remove_extent_data_ref()
1317 	num_refs -= refs_to_drop;  in remove_extent_data_ref()
1319 	if (num_refs == 0) {  in remove_extent_data_ref()
1324 			btrfs_set_extent_data_ref_count(leaf, ref1, num_refs);  in remove_extent_data_ref()
1326 			btrfs_set_shared_data_ref_count(leaf, ref2, num_refs);  in remove_extent_data_ref()
1339 	u32 num_refs = 0;  in extent_data_ref_count()  local
1355 			num_refs = btrfs_extent_data_ref_count(leaf, ref1);  in extent_data_ref_count()
1358 			num_refs = btrfs_shared_data_ref_count(leaf, ref2);  in extent_data_ref_count()
1363 		num_refs = btrfs_extent_data_ref_count(leaf, ref1);  in extent_data_ref_count()
1367 		num_refs = btrfs_shared_data_ref_count(leaf, ref2);  in extent_data_ref_count()
1371 	return num_refs;  in extent_data_ref_count()