const typeof( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - offsetof(type,member) );})
-/*
- * These are non-NULL pointers that will result in page faults
- * under normal circumstances, used to verify that nobody uses
- * non-initialized list entries.
+/**
+ * Non-NULL pointers that will result in page faults under normal
+ * circumstances, used to verify that nobody uses non-initialized list entries.
+ * Used for poisoning the \a next pointer of struct list_head.
*/
#define LIST_POISON1 ((void *) 0x00100100)
+/** Non-null pointer, used for poisoning the \a prev pointer of struct
+ * list_head
+ */
#define LIST_POISON2 ((void *) 0x00200200)
/**