list query

[Onkar Mahajan]

What is LIST_POISON1 and LIST_POISON2  ??

#define LIST_POISON1  ((void *) 0x00100100 + POISON_POINTER_DELTA)
#define LIST_POISON2  ((void *) 0x00200200 + POISON_POINTER_DELTA)

and why they are used ?

Regards,
Onkar