[PATCH 4.9 44/46] new helper: uaccess_kernel()

Greg Kroah-Hartman
2018-11-26T10:58:22Z

From: Al Viro <viro@zeniv.linux.org.uk>

commit db68ce10c4f0a27c1ff9fa0e789e5c41f8c4ea63 upstream.

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

---
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)