[PATCH 4.4 69/70] new helper: uaccess_kernel()

From: Greg Kroah-Hartman
Date: Mon Nov 26 2018 - 05:56:21 EST


4.4-stable review patch. If anyone has any objections, please let me know.

------------------

From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>

commit db68ce10c4f0a27c1ff9fa0e789e5c41f8c4ea63 upstream.

Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
[only take the include/linux/uaccess.h portion - gregkh]
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
include/linux/uaccess.h | 3 +++
1 file changed, 3 insertions(+)

--- a/include/linux/uaccess.h
+++ b/include/linux/uaccess.h
@@ -2,6 +2,9 @@
#define __LINUX_UACCESS_H__

#include <linux/sched.h>
+
+#define uaccess_kernel() segment_eq(get_fs(), KERNEL_DS)
+
#include <asm/uaccess.h>

static __always_inline void pagefault_disabled_inc(void)