Re: [PATCH v4 16/20] tools/testing/selftests/mm: test anonymous page offset merge behaviour

[Andrew Morton]

On Tue, 11 Aug 2026 18:07:36 +0100 "Lorenzo Stoakes (ARM)" <ljs@xxxxxxxxxx> wrote:

> > "Fault in" is imprecise, as a read-fault won't do. "Trigger a CoW fault." might
> > be better.
> 
> Andrew - could you fix up? Thanks :)

np.

--- a/tools/testing/selftests/mm/merge.c~tools-testing-selftests-mm-test-anonymous-page-offset-merge-behaviour-fix
+++ a/tools/testing/selftests/mm/merge.c
@@ -1324,7 +1324,7 @@ TEST_F(merge, anon_and_page_offset_misma
 	ASSERT_NE(ptr, MAP_FAILED);
 
 	/*
-	 * Map another separately, and fault in, at page offset 5:
+	 * Map another separately and trigger a CoW fault, at page offset 5:
 	 *
 	 * |-----------|           |---------|
 	 * | unfaulted |           | faulted |
_