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| author | Peter Xu <peterx@redhat.com> | 2022-05-13 06:22:55 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-05-13 17:20:11 +0300 |
| commit | 60dfaad65aa97fb6755b9798a6b3c9e79bcd5930 (patch) | |
| tree | d0073e7483f54c33a57a6d4b767d8e11e0da5470 /mm/memory.c | |
| parent | c64e912c865a1a0df1c312bca946985eb095afa5 (diff) | |
| download | linux-60dfaad65aa97fb6755b9798a6b3c9e79bcd5930.tar.xz | |
mm/hugetlb: allow uffd wr-protect none ptes
Teach hugetlbfs code to wr-protect none ptes just in case the page cache
existed for that pte. Meanwhile we also need to be able to recognize a
uffd-wp marker pte and remove it for uffd_wp_resolve.
Since at it, introduce a variable "psize" to replace all references to the
huge page size fetcher.
Link: https://lkml.kernel.org/r/20220405014912.14815-1-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: "Kirill A . Shutemov" <kirill@shutemov.name>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Nadav Amit <nadav.amit@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/memory.c')
0 files changed, 0 insertions, 0 deletions