patch-2.3.46 linux/include/asm-i386/page.h

• Lines: 21
• Date: Wed Feb 16 12:54:41 2000
• Orig file: v2.3.45/linux/include/asm-i386/page.h
• Orig date: Thu Feb 10 17:11:20 2000

diff -u --recursive --new-file v2.3.45/linux/include/asm-i386/page.h linux/include/asm-i386/page.h
@@ -94,6 +94,20 @@
 	BUG(); \
 } while (0)
 
+/* Pure 2^n version of get_order */
+extern __inline__ int get_order(unsigned long size)
+{
+	int order;
+
+	size = (size-1) >> (PAGE_SHIFT-1);
+	order = -1;
+	do {
+		size >>= 1;
+		order++;
+	} while (size);
+	return order;
+}
+
 #endif /* __ASSEMBLY__ */
 
 #define PAGE_OFFSET		((unsigned long)__PAGE_OFFSET)