--- 2.5/include/asm-i386/bitops.h	Sun Sep 22 06:25:12 2002
+++ build-2.5/include/asm-i386/bitops.h	Sun Oct 27 11:04:57 2002
@@ -414,11 +414,22 @@
 	return word;
 }
 
-/*
+/**
  * fls: find last bit set.
+ * @x: The word to search
+ *
  */
 
-#define fls(x) generic_fls(x)
+static inline int fls(int x)
+{
+	int r;
+
+	__asm__("bsrl %1,%0\n\t"
+		"jnz 1f\n\t"
+		"movl $-1,%0\n"
+		"1:" : "=r" (r) : "g" (x));
+	return r+1;
+}
 
 #ifdef __KERNEL__