| Date | Mon, 29 Aug 2022 21:25:11 +0000 | Subject | [RFC PATCH 08/28] mm/khugepaged: mark VMA as locked while collapsing a hugepage | From | Suren Baghdasaryan <> |
| |
Protect VMA from concurrent page fault handler while modifying it in collapse_huge_page.
Signed-off-by: Suren Baghdasaryan <surenb@google.com> --- mm/khugepaged.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 01f71786d530..030680633989 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -1072,6 +1072,7 @@ static void collapse_huge_page(struct mm_struct *mm, if (mm_find_pmd(mm, address) != pmd) goto out_up_write; + vma_mark_locked(vma); anon_vma_lock_write(vma->anon_vma); mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, NULL, mm, -- 2.37.2.672.g94769d06f0-goog
|