Break COW PTE before collecting the pages in COW-ed PTE. Signed-off-by: Chih-En Lin <shiyn.lin@xxxxxxxxx> --- mm/migrate_device.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/migrate_device.c b/mm/migrate_device.c index 721b2365dbca9..f6d67bd9629f5 100644 --- a/mm/migrate_device.c +++ b/mm/migrate_device.c @@ -106,6 +106,8 @@ static int migrate_vma_collect_pmd(pmd_t *pmdp, } } + if (!break_cow_pte_range(vma, pmdp, start, end)) + return migrate_vma_collect_skip(start, end, walk); if (unlikely(pmd_bad(*pmdp))) return migrate_vma_collect_skip(start, end, walk); -- 2.37.3
