---
title: mbuf_freecluster
framework: Kernel
role: symbol
role_heading: Function
platforms: [macOS 10.4+]
path: kernel/1535768-mbuf_freecluster
---

# mbuf_freecluster

## Declaration

```occ
void mbuf_freecluster(caddr_t addr, size_t size);
```

## Parameters

- `addr`: The address of the cluster.
- `size`: The actual size of the cluster.

## Discussion

Discussion Free a cluster that was previously allocated by a call to mbuf_alloccluster(). The caller must pass the actual size of the cluster as returned by mbuf_alloccluster(), which at this point must be either 2048, 4096 or 16384 bytes.