extern inline long
copy_from_user(void *to, const void __user *from, long n)
{
+ long res = n;
if (likely(__access_ok((unsigned long)from, n, get_fs())))
- n = __copy_tofrom_user_nocheck(to, (__force void *)from, n);
- else
- memset(to, 0, n);
- return n;
+ res = __copy_from_user_inatomic(to, from, n);
+ if (unlikely(res))
+ memset(to + (n - res), 0, res);
+ return res;
}
extern void __do_clear_user(void);