On Thu, Nov 08, 2018 at 03:36:09PM +0100, Andrey Konovalov wrote: > diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h > index efe79c1cdd47..c045b4eff95e 100644 > --- a/include/linux/uaccess.h > +++ b/include/linux/uaccess.h > @@ -13,6 +13,10 @@ > > #include <asm/uaccess.h> > > +#ifndef untagged_addr > +#define untagged_addr(addr) addr > +#endif Nitpick: add braces around (addr). Otherwise: Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx>