On Wed, Jul 24, 2019 at 01:58:48AM -0400, Alexandre Ghiti wrote: > Mips uses TASK_IS_32BIT_ADDR to determine if a task is 32bit, but > this define is mips specific and other arches do not have it: instead, > use !IS_ENABLED(CONFIG_64BIT) || is_compat_task() condition. > > Signed-off-by: Alexandre Ghiti <alex@xxxxxxxx> > Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx> > --- > arch/mips/mm/mmap.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/arch/mips/mm/mmap.c b/arch/mips/mm/mmap.c > index faa5aa615389..d4eafbb82789 100644 > --- a/arch/mips/mm/mmap.c > +++ b/arch/mips/mm/mmap.c > @@ -17,6 +17,7 @@ > #include <linux/sched/signal.h> > #include <linux/sched/mm.h> > #include <linux/sizes.h> > +#include <linux/compat.h> > > unsigned long shm_align_mask = PAGE_SIZE - 1; /* Sane caches */ > EXPORT_SYMBOL(shm_align_mask); > @@ -191,7 +192,7 @@ static inline unsigned long brk_rnd(void) > > rnd = rnd << PAGE_SHIFT; > /* 32MB for 32bit, 1GB for 64bit */ > - if (TASK_IS_32BIT_ADDR) > + if (!IS_ENABLED(CONFIG_64BIT) || is_compat_task()) > rnd = rnd & SZ_32M; > else > rnd = rnd & SZ_1G; > -- Since there are at least two users why not just create an inline for this which describes what we are looking for and remove the comments? Luis
