From nobody Sat Feb 7 23:11:09 2026 Received: from mail-oi1-f182.google.com (mail-oi1-f182.google.com [209.85.167.182]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8DB6923C4EC; Tue, 13 May 2025 10:02:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.182 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747130563; cv=none; b=UVrVdWWLPoSMujUZ3kX1ei5yCx09FR4uPINm03DyRxzW3dZBRCRKHvREbGElXvBau2ZsTIA5wrbk+zSGGDRIxK0+4tzcZQPyRhOLpqK/4dgimh3qTgQRiHPy2YETF/cOSS44XSqLt5uZNzmmJ+OTUKsGbNYL0PYj7bvoC0JiRFc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747130563; c=relaxed/simple; bh=XOaSi5B/2MPi0ZolAxQSAyMx/S6PktLSRWiUKfgAWAM=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=Is64wTLO2t0FTVU3LHCeeAFD1GamnE4niqeaAWWCPLhkSu2A3QwRI2kjNUjJxs/u1S8MxnvZ698+5PPfeY08rO8SVnB7kVpnDnd2Q/BSK9Mx6XqcmEyhuGCPH4zUsFgiiSdV3sLUiWQ4h2OExw4wcuEWa/Kc6Mdt6qwVmK4sdR0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=uniontech.com; spf=pass smtp.mailfrom=gmail.com; arc=none smtp.client-ip=209.85.167.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=uniontech.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-oi1-f182.google.com with SMTP id 5614622812f47-3f6dccdcadaso4270526b6e.2; Tue, 13 May 2025 03:02:41 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1747130560; x=1747735360; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=aLPcK3M4fHFXSHYEvDg/pvJ8s0/A80A92TKsHDLatZg=; b=W2H7HCQVgzq3KEY5wCA7bWm/PyjW7alnZFg6HJfMs5bFjlqm1tH3Shg8bdejw9qnYc TxEAxWrI+XfNYfk0+I54S8IVLpk8UJyzlBuV8k51PaW0tiiub3nfY+WF7FMEcn+DHwjF glhi5Kim81WYsDv8a3RDXhN8v257iZJCCisbzhf3eF4gfFmY31F52wQPsFb0QILZzV3m k402/puDWT2sEC7S3jqk9recKTpn/iqNQu4oCmZ1iZZcM8ILouOcmztqtnV+iVK+xene gqIDmD7gRzXDYEVfdvXoLjRRAK2r7O//cc79DUxCAjeQaPgpyGVlPC/VJgN+EaAejC7Q jlcg== X-Forwarded-Encrypted: i=1; AJvYcCW6bYwTrTOlBQkHf2DagPpLNiVsohMU8MPiNMGFJvlyCFyZYdDD3KGnLqlMx7F7wje4+SiAScFEeoX1CZ4=@vger.kernel.org X-Gm-Message-State: AOJu0YxpWgDhqTAyGArbJz/mL0yYkmhtmXwszXnsm/EhkRWbu4fwPcLG bhYkmwTUwMthf4mag3kpF+OayqUWIflb9EY2xnGpud1ugoF3naz7GzvP7CfEbgo= X-Gm-Gg: ASbGnctXxU1towyPixl38Gy1glyQYLkt1+uLs/KkEV8LIHi/LwOq441ic4gHB7RcrMh KUpEG0xsgsAabnObOXD+3DcTPVrvpD5LHubwnzW6SsQuaKVMR4l3EvsoLEiwYUZujRYmpXxigp3 pLdpnUb1G/mu7dVdCKq3I82FzmryLZu+qsnZV0k4VF7TybMIuSly3jiZmwbR0qwZpbrZyIIr1vB mh7I74zU39cyaYY7KvJLlNDgSb45WElhR6bQfRpz5v+wtOb5JjSlRGFjpibRh75PIXOjcaMSfkB b7H5etHjYA6CIm8s0+zJjSKPMjpAE48nn9OiC/n1dyKPuAcKQDbfnA9pAqD2e3ijPn64r9+9ibb y8IDtlqPVOhU= X-Google-Smtp-Source: AGHT+IFZ6nxbxPUXjKqsIZBUU0IJ9Oh3xgAmcnHaYyaJ8aGDxxXT+yXc7ObntfPZRIdH/Lqxwn7X4w== X-Received: by 2002:a05:620a:1988:b0:7c5:3da2:fc75 with SMTP id af79cd13be357-7cd010f78ebmr2161247285a.24.1747130549798; Tue, 13 May 2025 03:02:29 -0700 (PDT) Received: from localhost.localdomain (ip171.ip-51-81-44.us. [51.81.44.171]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7cd00fdc5f6sm689922085a.72.2025.05.13.03.02.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 May 2025 03:02:29 -0700 (PDT) From: Chen Linxuan To: Shuah Khan , Amir Goldstein , Chen Linxuan , Christian Brauner , Jan Kara , Miklos Szeredi Cc: linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] selftests: Suppress unused variable warning Date: Tue, 13 May 2025 18:01:53 +0800 Message-ID: <20250513100207.114000-1-chenlinxuan@uniontech.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable When running `make kselftest`, the following compilation warning was encoun= tered: mount-notify_test.c: In function =E2=80=98fanotify_rmdir=E2=80=99: mount-notify_test.c:490:17: warning: ignoring return value of =E2=80=98chdi= r=E2=80=99 declared with attribute =E2=80=98warn_unused_result=E2=80=99 [-W= unused-result] 490 | chdir("/"); | ^~~~~~~~~~ This patch addresses the warning by explicitly suppressing the unused result of the `chdir` function. Signed-off-by: Chen Linxuan --- .../selftests/filesystems/mount-notify/mount-notify_test.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) 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 59a71f22fb118..de847e2b12017 100644 --- a/tools/testing/selftests/filesystems/mount-notify/mount-notify_test.c +++ b/tools/testing/selftests/filesystems/mount-notify/mount-notify_test.c @@ -487,7 +487,9 @@ TEST_F(fanotify, rmdir) ASSERT_GE(ret, 0); =20 if (ret =3D=3D 0) { - chdir("/"); + // Suppress -Wunused-result + // Ref: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D66425#c34 + (void) !chdir("/"); unshare(CLONE_NEWNS); mount("", "/", NULL, MS_REC|MS_PRIVATE, NULL); umount2("/a", MNT_DETACH); --=20 2.43.0