1 files changed, 11 insertions, 2 deletions
diff --git a/mm/rmap.c b/mm/rmap.c
index 53c56da..f01e922 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -360,8 +360,17 @@ static int page_referenced_one(struct page *page,
 		goto out_unmap;
 	}
 
-	if (ptep_clear_flush_young_notify(vma, address, pte))
-		referenced++;
+	if (ptep_clear_flush_young_notify(vma, address, pte)) {
+		/*
+		 * Don't treat a reference through a sequentially read
+		 * mapping as such.  If the page has been used in
+		 * another mapping, we will catch it; if this other
+		 * mapping is already gone, the unmap path will have
+		 * set PG_referenced or activated the page.
+		 */
+		if (likely(!VM_SequentialReadHint(vma)))
+			referenced++;
+	}
 
 	/* Pretend the page is referenced if the task has the
 	   swap token and is in the middle of a page fault. */