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

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

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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)