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[2003:cb:c707:cb00:cd6b:7964:cc7d:b0e6]) by smtp.gmail.com with ESMTPSA id m9-20020a056000024900b0021d746d4820sm3773278wrz.37.2022.07.22.00.17.35 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 22 Jul 2022 00:17:35 -0700 (PDT) Message-ID: <8fbbd68f-267c-1e0d-a578-7da4551c4c19@redhat.com> Date: Fri, 22 Jul 2022 09:17:34 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 To: Peter Xu , linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: Nadav Amit , Andrew Morton , Andrea Arcangeli References: <20220721183338.27871-1-peterx@redhat.com> <20220721183338.27871-3-peterx@redhat.com> From: David Hildenbrand Organization: Red Hat Subject: Re: [PATCH v3 2/3] selftests: soft-dirty: Add test for mprotect In-Reply-To: <20220721183338.27871-3-peterx@redhat.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1658474259; a=rsa-sha256; cv=none; b=FAK0iO8xNK6bs3DEkbBE8H/dazq3hcgqtROW7Hk4bqDXEuevlSujjmCg6ef5pf/VltsWmz MelZ0f4ssJiQxR0fM1usKQQUpuxik0W0oW7iKVV99I+FrzU1aHG1TGPGQbK/coQiO14CFx Ky1yqSjyR8VRfv+lYG04zfMw2QFI07g= ARC-Authentication-Results: i=1; imf13.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=PI+qBrF7; spf=none (imf13.hostedemail.com: domain of david@redhat.com has no SPF policy when checking 170.10.129.124) smtp.mailfrom=david@redhat.com; dmarc=pass (policy=none) header.from=redhat.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1658474259; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=G08RO3bUIoXn+xETB+rf8zimU1kgXaXolUrxmZQvvWE=; b=fJj2loFw1Ut8IMl1yTyLNSjweDIeQjzIetB60G9KOQlAIhXZl7RTCrvhfp8OJHkc2Qc7Qy m/yX1o3OkB9JjqzIAds21lAf4lYv/glqkJMzOI/G5YuQomTs3CyUaxvakdo2yZoIF7bTXK qTbD/u7GId0pM2rzGWuGwSnufi7szMI= Authentication-Results: imf13.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=PI+qBrF7; spf=none (imf13.hostedemail.com: domain of david@redhat.com has no SPF policy when checking 170.10.129.124) smtp.mailfrom=david@redhat.com; dmarc=pass (policy=none) header.from=redhat.com X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 8B86F200A5 X-Stat-Signature: tu6f1op8pemmqbettn64eyigb73wy6or X-Rspam-User: X-HE-Tag: 1658474259-405649 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 21.07.22 20:33, Peter Xu wrote: > Add two soft-diryt test cases for mprotect() on both anon or file. s/soft-diryt/soft-dirty/ > > Signed-off-by: Peter Xu > --- > tools/testing/selftests/vm/soft-dirty.c | 69 ++++++++++++++++++++++++- > 1 file changed, 68 insertions(+), 1 deletion(-) > > diff --git a/tools/testing/selftests/vm/soft-dirty.c b/tools/testing/selftests/vm/soft-dirty.c > index 08ab62a4a9d0..7d93906aa43f 100644 > --- a/tools/testing/selftests/vm/soft-dirty.c > +++ b/tools/testing/selftests/vm/soft-dirty.c > @@ -121,13 +121,78 @@ static void test_hugepage(int pagemap_fd, int pagesize) > free(map); > } > > +static void test_mprotect(int pagemap_fd, int pagesize, bool anon) > +{ > + const char *type[] = {"file", "anon"}; > + const char *fname = "./soft-dirty-test-file"; > + int test_fd; > + char *map; Instead of fname, unlink, open, close, unlink you can use a tmpfile FILE *file; file = tmpfile(); if (!file) { ksft_test_result_fail("tmpfile() failed\n"); return; } test_fd = fileno(file); > + > + if (anon) { > + map = mmap(NULL, pagesize, PROT_READ|PROT_WRITE, > + MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); > + if (!map) > + ksft_exit_fail_msg("anon mmap failed\n"); > + } else { > + unlink(fname); > + test_fd = open(fname, O_RDWR | O_CREAT); > + if (test_fd < 0) { > + ksft_test_result_skip("Test %s huge page allocation\n", __func__); Wrong copy-paste I assume :) > + return; > + } > + ftruncate(test_fd, pagesize); > + map = mmap(NULL, pagesize, PROT_READ|PROT_WRITE, > + MAP_SHARED, test_fd, 0); > + if (!map) > + ksft_exit_fail_msg("file mmap failed\n"); > + } > + Apart from that LGTM. -- Thanks, David / dhildenb