[PATCH 7.2 v2 12/12] selftests/mm: remove READ_ONLY_THP_FOR_FS from comments in guard-regions

Zi Yan
2026-04-13T19:21:52Z

Any file system with large folio support and the supported orders include
PMD_ORDER can be used.

Signed-off-by: Zi Yan <ziy@nvidia.com>
---
tools/testing/selftests/mm/guard-regions.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/mm/guard-regions.c b/tools/testing/selftests/mm/guard-regions.c
index 48e8b1539be3..13e77e48b6ef 100644
--- a/tools/testing/selftests/mm/guard-regions.c
+++ b/tools/testing/selftests/mm/guard-regions.c
@@ -2205,7 +2205,7 @@ TEST_F(guard_regions, collapse)

/*
* We must close and re-open local-file backed as read-only for
- * CONFIG_READ_ONLY_THP_FOR_FS to work.
+ * MADV_COLLAPSE to work.
*/
if (variant->backing == LOCAL_FILE_BACKED) {
ASSERT_EQ(close(self->fd), 0);
@@ -2237,9 +2237,10 @@ TEST_F(guard_regions, collapse)
/*
* Now collapse the entire region. This should fail in all cases.
*
- * The madvise() call will also fail if CONFIG_READ_ONLY_THP_FOR_FS is
- * not set for the local file case, but we can't differentiate whether
- * this occurred or if the collapse was rightly rejected.
+ * The madvise() call will also fail if the file system does not support
+ * large folio or the supported orders do not include PMD_ORDER for the
+ * local file case, but we can't differentiate whether this occurred or
+ * if the collapse was rightly rejected.
*/
EXPECT_NE(madvise(ptr, size, MADV_COLLAPSE), 0);

--
2.43.0