On Tue, 6 Mar 2018 16:12:34 +0100
Christophe LEROY <christophe.le...@c-s.fr> wrote:

> Le 06/03/2018 à 14:25, Nicholas Piggin a écrit :
> > This is a tidy up which removes radix MMU calls into the slice
> > code.
> > 
> > Signed-off-by: Nicholas Piggin <npig...@gmail.com>
> > ---
> >   arch/powerpc/include/asm/hugetlb.h |  9 ++++++---
> >   arch/powerpc/mm/hugetlbpage.c      |  5 +++--
> >   arch/powerpc/mm/slice.c            | 17 ++++-------------
> >   3 files changed, 13 insertions(+), 18 deletions(-)
> > 
> > diff --git a/arch/powerpc/include/asm/hugetlb.h 
> > b/arch/powerpc/include/asm/hugetlb.h
> > index 1a4847f67ea8..59885d444695 100644
> > --- a/arch/powerpc/include/asm/hugetlb.h
> > +++ b/arch/powerpc/include/asm/hugetlb.h
> > @@ -90,16 +90,19 @@ pte_t *huge_pte_offset_and_shift(struct mm_struct *mm,
> >   void flush_dcache_icache_hugepage(struct page *page);
> >   
> >   #if defined(CONFIG_PPC_MM_SLICES)
> > -int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr,
> > +int slice_is_hugepage_only_range(struct mm_struct *mm, unsigned long addr,
> >                        unsigned long len);
> > -#else
> > +#endif
> >   static inline int is_hugepage_only_range(struct mm_struct *mm,
> >                                      unsigned long addr,
> >                                      unsigned long len)
> >   {
> > +#if defined(CONFIG_PPC_MM_SLICES)
> > +   if (!radix_enabled())
> > +           return slice_is_hugepage_only_range(mm, addr, len);
> > +#endif
> >     return 0;  
> 
> Might be easier to understand as
> 
>       if (!IS_ENABLED(CONFIG_PPC_MM_SLICES) || radix_enabled())
>               return 0;
>       return slice_is_hugepage_only_range(mm, addr, len);

Yep.


> >   unsigned long vma_mmu_pagesize(struct vm_area_struct *vma)
> >   {
> >   #ifdef CONFIG_PPC_MM_SLICES
> > -   unsigned int psize = get_slice_psize(vma->vm_mm, vma->vm_start);
> >     /* With radix we don't use slice, so derive it from vma*/
> > -   if (!radix_enabled())
> > +   if (!radix_enabled()) {
> > +           unsigned int psize = get_slice_psize(vma->vm_mm, 
> > vma->vm_start);  
> 
> Insert a blank line here.

Okay.

Thanks for the review, it's really appreciated.

Thanks,
Nick

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