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docs/api/memory/linear-allocator/free.md

@@ -0,0 +1,35 @@
+# LinearAllocator::Free
+
+```cpp
+void Free(void* ptr) override;
+```
+
+此方法对 LinearAllocator 无实际效果。线性分配器不支持单个内存块的释放，因为内存是顺序分配的，释放中间某块会破坏后续分配的完整性。需要释放所有内存时使用 `Clear()` 方法。
+
+**参数：**
+- `ptr` - 被忽略
+
+**返回：** 无
+
+**复杂度：** O(1)（空操作）
+
+**示例：**
+
+```cpp
+#include <XCEngine/Memory/LinearAllocator.h>
+
+LinearAllocator allocator(1024);
+void* ptr = allocator.Allocate(256);
+void* ptr2 = allocator.Allocate(128);
+
+// Free 实际上什么都不做
+allocator.Free(ptr);
+allocator.Free(ptr2);
+
+// 如需释放所有内存，应使用 Clear
+allocator.Clear();
+```
+
+## 相关文档
+
+- [LinearAllocator 总览](linear-allocator.md) - 返回类总览