linux-kernel - Re: [PATCH 00/23] userfaultfd-wp: Support shmem and hugetlbfs

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Message-ID: <20210323005410.GA6486@xz-x1>
Date:   Mon, 22 Mar 2021 20:54:10 -0400
From:   Peter Xu <peterx@...hat.com>
To:     linux-kernel@...r.kernel.org, linux-mm@...ck.org
Cc:     "Kirill A . Shutemov" <kirill@...temov.name>,
        Jerome Glisse <jglisse@...hat.com>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Matthew Wilcox <willy@...radead.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Axel Rasmussen <axelrasmussen@...gle.com>,
        Hugh Dickins <hughd@...gle.com>,
        Nadav Amit <nadav.amit@...il.com>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>,
        Jason Gunthorpe <jgg@...pe.ca>
Subject: Re: [PATCH 00/23] userfaultfd-wp: Support shmem and hugetlbfs

On Mon, Mar 22, 2021 at 08:48:49PM -0400, Peter Xu wrote:
> This patchset is based on tag v5.12-rc3-mmots-2021-03-17-22-26.  To run the
> selftest, need to apply the two patches to fix minor mode page leak:
> 
> https://lore.kernel.org/lkml/20210322175132.36659-1-peterx@redhat.com/
> https://lore.kernel.org/lkml/20210322204836.1650221-1-axelrasmussen@google.com/
> 
> Since I didn't get any NACK in the previous RFC series for months, I decided to
> remove the RFC tag starting from this version, so this is v1 of uffd-wp support
> on shmem & hugetlb.

Attaching changelog, rfc->v1:
- fix up syzbot reported issue
- add a new feature bit UFFD_FEATURE_WP_SHMEM_HUGETLBFS exported in uapi, so
  that apps can detect the new kernel capability.
- check for all pte_to_swp_entry callers too (hmm, etc.) [JasonG]
- dropped the first few patches that are not directly related to this series; I
  will post them separately as standalone series

Add Cc too (I'll remember to send the series with full cc list next time..).

Thanks,

-- 
Peter Xu