On Sat, Sep 15, 2018 at 04:34:57AM +0800, Yang Shi wrote: > Suggested-by: Michal Hocko <mhocko@xxxxxxxxxx> > Suggested-by: Kirill A. Shutemov <kirill@xxxxxxxxxxxxx> > Suggested-by: Matthew Wilcox <willy@xxxxxxxxxxxxx> Reviewed-by: Matthew Wilcox <willy@xxxxxxxxxxxxx> Looks good! Thanks for sticking with this patch series. Minor spelling fixes: > - /* > - * Remove the vma's, and unmap the actual pages > - */ > + /* Detatch vmas from rbtree */ "Detach" > + /* > + * mpx unmap need to be handled with write mmap_sem. It is safe to > + * deal with it before unmap_region(). > + */ * mpx unmap needs to be called with mmap_sem held for write. * It is safe to call it before unmap_region() > + ret = __do_munmap(mm, start, len, &uf, downgrade); > + /* > + * Returning 1 indicates mmap_sem is down graded. > + * But 1 is not legal return value of vm_munmap() and munmap(), reset > + * it to 0 before return. > + */ "downgraded" is one word.
