Messages in this thread Patch in this message | | | From | Chih-En Lin <> | Subject | [PATCH v3 11/14] mm/migrate_device: Support COW PTE | Date | Tue, 20 Dec 2022 15:27:40 +0800 |
| |
Break COW PTE before collecting the pages in COW-ed PTE.
Signed-off-by: Chih-En Lin <shiyn.lin@gmail.com> --- 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
| |