175 #define __cmpxchg_double_check(ptr1, ptr2)					\  argument
177 	if (sizeof(*(ptr1)) != 8)						\
179 	VM_BUG_ON((unsigned long *)(ptr2) - (unsigned long *)(ptr1) != 1);	\
182 #define cmpxchg_double(ptr1, ptr2, o1, o2, n1, n2) \  argument
185 	__cmpxchg_double_check(ptr1, ptr2); \
188 				     ptr1); \
192 #define cmpxchg_double_local(ptr1, ptr2, o1, o2, n1, n2) \  argument
195 	__cmpxchg_double_check(ptr1, ptr2); \
198 				  ptr1); \
217 #define this_cpu_cmpxchg_double_8(ptr1, ptr2, o1, o2, n1, n2)		\  argument
221 	__ret = cmpxchg_double_local(	raw_cpu_ptr(&(ptr1)),		\