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| author | Peter Xu <peterx@redhat.com> | 2022-08-11 19:13:28 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-09-27 05:46:05 +0300 |
| commit | 0ccf7f168e17bb7eb5a322397ba5a841f4fbaccb (patch) | |
| tree | c7f8491234fc2a42dce4f1071fc346168732225a /mm/migrate_device.c | |
| parent | 0d206b5d2e0d7d7f09ac9540e3ab3e35a34f536e (diff) | |
| download | linux-0ccf7f168e17bb7eb5a322397ba5a841f4fbaccb.tar.xz | |
mm/thp: carry over dirty bit when thp splits on pmd
Carry over the dirty bit from pmd to pte when a huge pmd splits. It
shouldn't be a correctness issue since when pmd_dirty() we'll have the
page marked dirty anyway, however having dirty bit carried over helps the
next initial writes of split ptes on some archs like x86.
Link: https://lkml.kernel.org/r/20220811161331.37055-5-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Huang Ying <ying.huang@intel.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Andi Kleen <andi.kleen@intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: "Kirill A . Shutemov" <kirill@shutemov.name>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nadav Amit <nadav.amit@gmail.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Dave Hansen <dave.hansen@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/migrate_device.c')
0 files changed, 0 insertions, 0 deletions