patch-2.4.10 linux/arch/i386/lib/usercopy.c

• Lines: 16
• Date: Tue Sep 18 14:10:43 2001
• Orig file: v2.4.9/linux/arch/i386/lib/usercopy.c
• Orig date: Fri Apr 13 20:26:07 2001

diff -u --recursive --new-file v2.4.9/linux/arch/i386/lib/usercopy.c linux/arch/i386/lib/usercopy.c
@@ -44,6 +44,7 @@
 unsigned long
 __generic_copy_to_user(void *to, const void *from, unsigned long n)
 {
+	prefetch(from);
 	if (access_ok(VERIFY_WRITE, to, n))
 		__copy_user(to,from,n);
 	return n;
@@ -52,6 +53,7 @@
 unsigned long
 __generic_copy_from_user(void *to, const void *from, unsigned long n)
 {
+	prefetchw(to);
 	if (access_ok(VERIFY_READ, from, n))
 		__copy_user_zeroing(to,from,n);
 	else