From nobody Tue Dec 16 19:43:00 2025 Received: from mail-wm1-f74.google.com (mail-wm1-f74.google.com [209.85.128.74]) (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 9A7B51D86FF for ; Tue, 11 Mar 2025 13:18:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.74 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741699115; cv=none; b=G1dX6M11lxkhkX/8U9fZVmKpTsdP7jlyIVUKkd5wiECUEyAsXoei88QU83gMYb4ffSFtBXCTDyGGxfvGv8LEBcZjvxBUXR3aiK60d9BrtuOnFBvKLyh3Z8Q1MNYeQT+pgJVoc2qgKm32H9ZpIfGSlsNk4nkBDIfE9fwXBpmSKEc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741699115; c=relaxed/simple; bh=oSXuPp+IUOl5G2aP9gTCdmTe3j7rVMOxHg2aJoo6Efg=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=a2YC6HhZxZ3FXYSmYb/pkDLvhPcsfhAh7PY1vJ2FpCBQqZPS+GPHo5CT5nUayxzs+YbABsymZAHst9R9NYNGytBaQ5CGcUZuyf3O79rA46CbMjqvKWhPE9jFEabvpTG50GxaS9T6DaIQt9Oc2I49PWrU2976gpsYDXOdthFvrLE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--jackmanb.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=k2yLkTxQ; arc=none smtp.client-ip=209.85.128.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--jackmanb.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="k2yLkTxQ" Received: by mail-wm1-f74.google.com with SMTP id 5b1f17b1804b1-43bd8fd03a2so26654925e9.3 for ; Tue, 11 Mar 2025 06:18:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1741699112; x=1742303912; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=Vce7eh8mPMitMWqdtTQW3Xgxbt0OG8W7iuQCUiRo4Hc=; b=k2yLkTxQ2K7t2n59+V3hFbYpdZD6A/EB8ugtx/QgGx4dtG91o0lsNwbTBFftlyrDcG ePsgnqUCvkeAkHYrhj6BwgbSa1fWnDN+qRvKnxU9L6jlBvk3otMVj1HvPhoXhtWyXQ2i VnNoWZWUXpyDWrhcPhsM7OZgIqBeGCdoRw6VENCQQ+HI2VtPi8iGMoaeHQQxj1iSlLDS DlyBQHd70iZw9jkzdb4vocACpbwwOi1JEoZl5ogskJJeLzl5L4ANuY7D/R5CreBMEvnl GeuBxaep58xgXsyCeYvf+UsrFyfl8qKBcDJDNLNEn9iJQQw6u45ttvXHX9FzaUvz7aOB lXRg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1741699112; x=1742303912; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Vce7eh8mPMitMWqdtTQW3Xgxbt0OG8W7iuQCUiRo4Hc=; b=eN+lZN5MgyVDHGgzugUSbHwNrtm3jUJKq55qZNzFgIvyBl2G+7hmAAAWVsQQlf/4fH IPukOm2XhvloOE5kQyU18gMdp3/JCcZmC0i74/fX47HosEKLO62xFrfCvpf2b/eYZ//t lAFqZzphyaKNZhbUVUxJ6AjIrdWIbgntkw2Np2ZKxTcwo5cwCgaAZu3gfDvSuHAcYlMi nantEpW8IDkNuyfcYUJcnnM1ALey6C2wxvpSQq46XVI3sqwmhTAa/FMJeOiwqSALdDZ7 qvnDCVK6Eyt6BGfRHV+Q0piJlsW9yY0VlRYS0RB9Qu3f9xRRgwImNdrRBoqsksdq6qt5 rIcg== X-Forwarded-Encrypted: i=1; AJvYcCXjDxyZ7Y+XzIkrIpttHqLRy+4+QcrGwHFuN05wrQi6Imj5mOuBv/SiyORyYgnF88i2RDcknQ33X0BJZtw=@vger.kernel.org X-Gm-Message-State: AOJu0Yyd8ZET/sJL9NP0VlTMGzCQOube/YF+dPqJkZ/hAX7sTdsK6ZKY IwHGylsXeuKzGlKw0vFQ1cS4jtLREn+RKrnkwqbpBKOPP5L+DyXpqWBkw6Igw6fH9Yysv+AMuKI Bsw+VFMfS4Q== X-Google-Smtp-Source: AGHT+IH0f6ArUDAT+Z1aqU0gEtWgWP4WVJVxUFx2+ko5jUv3CK2PIBB6GlZGbkJUJj1SHrJwdvtnC7ZX3WPGDQ== X-Received: from wmbbi10.prod.google.com ([2002:a05:600c:3d8a:b0:43d:7e5:30f0]) (user=jackmanb job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:45c6:b0:43c:e7ae:4bcf with SMTP id 5b1f17b1804b1-43ce7ae4f6cmr119062035e9.0.1741699112009; Tue, 11 Mar 2025 06:18:32 -0700 (PDT) Date: Tue, 11 Mar 2025 13:18:18 +0000 In-Reply-To: <20250311-mm-selftests-v4-0-dec210a658f5@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250311-mm-selftests-v4-0-dec210a658f5@google.com> X-Mailer: b4 0.14.2 Message-ID: <20250311-mm-selftests-v4-7-dec210a658f5@google.com> Subject: [PATCH v4 07/12] selftests/mm: Skip map_populate on weird filesystems From: Brendan Jackman To: Lorenzo Stoakes , Andrew Morton , Shuah Khan Cc: Dev Jain , linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Brendan Jackman Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable It seems that 9pfs does not allow truncating unlinked files, Mark Brown has noted that NFS may also behave this way. It doesn't seem quite right to call this a "bug" but it's probably a special enough case that it makes sense for the test to just SKIP if it happens. Signed-off-by: Brendan Jackman --- tools/testing/selftests/mm/map_populate.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/tools/testing/selftests/mm/map_populate.c b/tools/testing/self= tests/mm/map_populate.c index 5c8a53869b1bd287b09a250edf628a66c25c2439..433e54fb634f793f2eb4c53ba6b= 791045c9f4986 100644 --- a/tools/testing/selftests/mm/map_populate.c +++ b/tools/testing/selftests/mm/map_populate.c @@ -87,6 +87,13 @@ int main(int argc, char **argv) BUG_ON(!ftmp, "tmpfile()"); =20 ret =3D ftruncate(fileno(ftmp), MMAP_SZ); + if (ret < 0 && errno =3D=3D ENOENT) { + /* + * This probably means tmpfile() made a file on a filesystem + * that doesn't handle temporary files the way we want. + */ + ksft_exit_skip("ftruncate(fileno(tmpfile())) gave ENOENT, weird filesyst= em?\n"); + } BUG_ON(ret, "ftruncate()"); =20 smap =3D mmap(0, MMAP_SZ, PROT_READ | PROT_WRITE, --=20 2.49.0.rc0.332.g42c0ae87b1-goog