When running `make kselftest`, the following compilation warning was encountered:

mount-notify_test.c: In function ‘fanotify_rmdir’: mount-notify_test.c:490:17: warning: ignoring return value of ‘chdir’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 490 | chdir("/"); | ^~~~~~~~~~

Signed-off-by: Chen Linxuan chenlinxuan@uniontech.com --- Changes in v3: - Apply changes suggested by Muhammad Usama Anjum - Link to v2: https://lore.kernel.org/all/20250620035125.2938774-2-chenlinxuan@uniontech.c... Changes in v2: - Apply changes suggested by Shuah Khan - Link to v1: https://lore.kernel.org/all/20250610020758.2798787-2-chenlinxuan@uniontech.c... --- .../filesystems/mount-notify/mount-notify_test.c | 10 +++++----- .../filesystems/mount-notify/mount-notify_test_ns.c | 10 +++++----- 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/tools/testing/selftests/filesystems/mount-notify/mount-notify_test.c b/tools/testing/selftests/filesystems/mount-notify/mount-notify_test.c index 5a3b0ace1a88c..30ed5e00800ba 100644 --- a/tools/testing/selftests/filesystems/mount-notify/mount-notify_test.c +++ b/tools/testing/selftests/filesystems/mount-notify/mount-notify_test.c @@ -458,12 +458,12 @@ TEST_F(fanotify, rmdir) ASSERT_GE(ret, 0);

if (ret == 0) { - chdir("/"); - unshare(CLONE_NEWNS); - mount("", "/", NULL, MS_REC|MS_PRIVATE, NULL); - umount2("/a", MNT_DETACH); + ASSERT_EQ(chdir("/"), 0); + ASSERT_EQ(unshare(CLONE_NEWNS), 0); + ASSERT_EQ(mount("", "/", NULL, MS_REC | MS_PRIVATE, NULL), 0); + ASSERT_EQ(umount2("/a", MNT_DETACH), 0); // This triggers a detach in the other namespace - rmdir("/a"); + ASSERT_EQ(rmdir("/a"), 0); exit(0); } wait(NULL); diff --git a/tools/testing/selftests/filesystems/mount-notify/mount-notify_test_ns.c b/tools/testing/selftests/filesystems/mount-notify/mount-notify_test_ns.c index d91946e69591a..11a2cfeb1eb94 100644 --- a/tools/testing/selftests/filesystems/mount-notify/mount-notify_test_ns.c +++ b/tools/testing/selftests/filesystems/mount-notify/mount-notify_test_ns.c @@ -486,12 +486,12 @@ TEST_F(fanotify, rmdir) ASSERT_GE(ret, 0);

if (ret == 0) { - chdir("/"); - unshare(CLONE_NEWNS); - mount("", "/", NULL, MS_REC|MS_PRIVATE, NULL); - umount2("/a", MNT_DETACH); + ASSERT_EQ(chdir("/"), 0); + ASSERT_EQ(unshare(CLONE_NEWNS), 0); + ASSERT_EQ(mount("", "/", NULL, MS_REC | MS_PRIVATE, NULL), 0); + ASSERT_EQ(umount2("/a", MNT_DETACH), 0); // This triggers a detach in the other namespace - rmdir("/a"); + ASSERT_EQ(rmdir("/a"), 0); exit(0); } wait(NULL);