Re: [PATCH] mm, hugetlb: fix resv_huge_pages underflow on UFFDIO_COPY

[Peter Xu]

On Fri, May 14, 2021 at 10:56:36AM -0700, Mike Kravetz wrote:
> Since this is a shared mapping, can we not have a 'regular' mapping to
> the same range that is uffd registered?  And, that regular mappings could
> fault and race with the uffd copy code?

Yeah we can..  Please ignore the paragraph in the parenthesis.  Sorry.

-- 
Peter Xu