@@ -35,6 +35,18 @@
#define xzalloc_array(_type, _num) \
((_type *)_xzalloc_array(sizeof(_type), __alignof__(_type), _num))
+/* Allocate space for a structure with a flexible array of typed objects. */
+#define xzalloc_flex_struct(type, field, nr) \
+ ((type *)_xzalloc(offsetof(type, field[nr]), __alignof__(type)))
+
+#define xmalloc_flex_struct(type, field, nr) \
+ ((type *)_xmalloc(offsetof(type, field[nr]), __alignof__(type)))
+
+/* Re-allocate space for a structure with a flexible array of typed objects. */
+#define xrealloc_flex_struct(ptr, field, nr) \
+ ((typeof(ptr))_xrealloc(ptr, offsetof(typeof(*(ptr)), field[nr]), \
+ __alignof__(typeof(*(ptr)))))
+
/* Allocate untyped storage. */
#define xmalloc_bytes(_bytes) _xmalloc(_bytes, SMP_CACHE_BYTES)
#define xzalloc_bytes(_bytes) _xzalloc(_bytes, SMP_CACHE_BYTES)