Re: [PATCH v9 0/3] fix hugetlb MADV_DONTNEED vma_lock handling

Peter Xu
2022-11-14T00:09:09Z

On Fri, Nov 11, 2022 at 03:26:25PM -0800, Mike Kravetz wrote:
> This series addresses the issue first reported in [1], and fully
> described in patch 3. While exploring solutions to this issue,
> related problems with mmu notification calls were discovered. The
> first two patches address those issues.
>
> Previous discussions suggested further cleanup by removing the
> routine zap_page_range. This is possible because zap_page_range_single
> is now exported, and all callers of zap_page_range pass ranges entirely
> within a single vma. This work will be done in a later patch so as not
> to distract from this bug fix.
>
> [1] https://lore.kernel.org/lkml/CAO4mrfdLMXsao9RF4fUE8-Wfde8xmjsKrTNMNC9wjUb6JudD0g@mail.gmail.com/
>
> Mike Kravetz (3):
> madvise: use zap_page_range_single for madvise dontneed
> hugetlb: remove duplicate mmu notifications
> hugetlb: don't delete vma_lock in hugetlb MADV_DONTNEED processing

Acked-by: Peter Xu <peterx@redhat.com>

--
Peter Xu