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-rw-r--r--mm/rmap.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/mm/rmap.c b/mm/rmap.c
index 450f5241b5a5..1fc559e09ca8 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -298,7 +298,11 @@ static int page_referenced_one(struct page *page,
if (ptep_clear_flush_young(vma, address, pte))
referenced++;
- if (mm != current->mm && !ignore_token && has_swap_token(mm))
+ /* Pretend the page is referenced if the task has the
+ swap token and is in the middle of a page fault. */
+ if (mm != current->mm && !ignore_token &&
+ has_swap_token(mm) &&
+ rwsem_is_locked(&mm->mmap_sem))
referenced++;
(*mapcount)--;