new helper: uaccess_kernel()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h
index 9677a7c..b635273 100644
--- a/arch/arm/include/asm/uaccess.h
+++ b/arch/arm/include/asm/uaccess.h
@@ -266,7 +266,7 @@ static inline void set_fs(mm_segment_t fs)
#define access_ok(type, addr, size) (__range_ok(addr, size) == 0)
#define user_addr_max() \
- (segment_eq(get_fs(), KERNEL_DS) ? ~0UL : get_fs())
+ (uaccess_kernel() ? ~0UL : get_fs())
/*
* The "__xxx" versions of the user access functions do not verify the
diff --git a/arch/arm/lib/uaccess_with_memcpy.c b/arch/arm/lib/uaccess_with_memcpy.c
index 6bd1089..9b4ed17 100644
--- a/arch/arm/lib/uaccess_with_memcpy.c
+++ b/arch/arm/lib/uaccess_with_memcpy.c
@@ -90,7 +90,7 @@ __copy_to_user_memcpy(void __user *to, const void *from, unsigned long n)
unsigned long ua_flags;
int atomic;
- if (unlikely(segment_eq(get_fs(), KERNEL_DS))) {
+ if (uaccess_kernel()) {
memcpy((void *)to, from, n);
return 0;
}
@@ -162,7 +162,7 @@ __clear_user_memset(void __user *addr, unsigned long n)
{
unsigned long ua_flags;
- if (unlikely(segment_eq(get_fs(), KERNEL_DS))) {
+ if (uaccess_kernel()) {
memset((void *)addr, 0, n);
return 0;
}