+/* Remove this macro, when the kernel has f_type as unsigned int or long
+ * for every architecure. Currently some 64bit architecures (like s390x)
+ * have int in the kernel, but long in userspace for f_type, so glibc
+ * extends the int to long and carries over the sign. Negative numbers are
+ * caused by the 32bit magic constants in linux/magic.h stuffed into the
+ * signed int in the kernel and these negative numbers are extended to
+ * long, which cannot be simply compared to the magic constants anymore.
+ */
+#define F_TYPE_CMP(f_type, magic) \
+ __extension__ ({ \
+ __SWORD_TYPE _f = (f_type); \
+ const __SWORD_TYPE _c = (magic); \
+ const int _c32 = 1 ? (magic) \
+ : sizeof((int[magic]){0}); \
+ (_f == _c || _f == _c32 ); \
+ })
+
+