Merge branch 'uaccess.futex' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs into locking/core

Pull uaccess futex cleanups for Al Viro:

     Consolidate access_ok() usage and the futex uaccess function zoo.

arch/microblaze/include/asm/futex.h

@@ -34,7 +34,8 @@ arch_futex_atomic_op_inuser(int op, int oparg, int *oval, u32 __user *uaddr)
 {
 	int oldval = 0, ret;
 
-	pagefault_disable();
+	if (!access_ok(uaddr, sizeof(u32)))
+		return -EFAULT;
 
 	switch (op) {
 	case FUTEX_OP_SET:
@@ -56,8 +57,6 @@ arch_futex_atomic_op_inuser(int op, int oparg, int *oval, u32 __user *uaddr)
 		ret = -ENOSYS;
 	}
 
-	pagefault_enable();
-
 	if (!ret)
 		*oval = oldval;