On Fri, Sep 25, 2020 at 06:25:58PM -0400, Peter Xu wrote: > This prepares for the future work to trigger early cow on pinned pages during > fork(). No functional change intended. > > Signed-off-by: Peter Xu <peterx@xxxxxxxxxx> > --- > include/linux/mm.h | 2 +- > kernel/fork.c | 2 +- > mm/memory.c | 14 +++++++++----- > 3 files changed, 11 insertions(+), 7 deletions(-) > > diff --git a/include/linux/mm.h b/include/linux/mm.h > index b2f370f0b420..ae914be004b3 100644 > --- a/include/linux/mm.h > +++ b/include/linux/mm.h > @@ -1646,7 +1646,7 @@ struct mmu_notifier_range; > void free_pgd_range(struct mmu_gather *tlb, unsigned long addr, > unsigned long end, unsigned long floor, unsigned long ceiling); > int copy_page_range(struct mm_struct *dst, struct mm_struct *src, > - struct vm_area_struct *vma); > + struct vm_area_struct *vma, struct vm_area_struct *new); It makes dst/src mm_struct arguments redundant. There's always vma->vm_mm. -- Kirill A. Shutemov
