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-rw-r--r--mm/memory.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/memory.c b/mm/memory.c
index a021c29..eecdd05 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2166,7 +2166,8 @@ static int wp_page_copy(struct mm_struct *mm, struct vm_area_struct *vma,
pte_unmap_unlock(page_table, ptl);
mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end);
- if (old_page) {
+ /* THP pages are never mlocked */
+ if (old_page && !PageTransCompound(old_page)) {
/*
* Don't let another task, with possibly unlocked vma,
* keep the mlocked page.