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b=HsriDbNKQQIc9uLqKb3o3lGxNyauWEo1fFT0hzLpKbTb5nTniA1YcveZi7m5zizlf cqaSPiPne+kjrO0ePUeOhaYrmIVOTVVaMmqtDlpQFaaaLCYnD2Y0HtFqRGhqORFh3M +PafWd9fkkR7YtOnWOlqa1wmvmVRW9A8ysAi+in6csCEs/tw+tiKMYb930rZy4krrz JMpvZ2cGCS2cFZ+nR+KFq52hJjdPq4vhAnxfsDbnf80AxKbPC9RH0duuydCsxD4vcf W4oW1ac0IdcMzsiPfcM1+tjLTd9QS4yj5fzkTDdoRAcyZqV8+GgzPhGTYxzaNQdqZY 6qqWH9RCEnU+g== Message-ID: Date: Fri, 27 Mar 2026 14:24:58 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 0/6] selftests/mm: skip several tests when thp is not available To: Andrew Morton , Chunyu Hu Cc: shuah@kernel.org, linux-mm@kvack.org, ljs@kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, mhocko@suse.com, ziy@nvidia.com, baolin.wang@linux.alibaba.com, npache@redhat.com, ryan.roberts@arm.com, dev.jain@arm.com, baohua@kernel.org, lance.yang@linux.dev References: <20260324013316.2590422-1-chuhu@redhat.com> <20260324090927.eeacb7987d22ed8ba13fada2@linux-foundation.org> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: E35C020008 X-Stat-Signature: 8f9enxi6gf1xcn7wkxupk9zuyo6wihe4 X-Rspam-User: X-HE-Tag: 1774617906-132478 X-HE-Meta: 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 cbRrg6Av dtqSbhHq4BUhVpSlA+n0gPMP7XpM1BJl72q7LyRvZbNUMaF/SBwwVWzhVqwO0fFAMCL2pX9G7A6n6GSMYdH8mg9LTpiUmKdhBW4WA8Y/Y51rG84EFZe38gSOKzTfadslBbprgFChoMZ69RsSucqT2o66mUOnv1fL9YINh+6l90VRjQfIVQqK9Krn/USj/CwYyvnYZQ7/2L1f1b1M51iggtuWx4lWNKEWGbJ6d90XrGGklc2N93h92jmXqhleI1iphrxbL08iliMYgPOpid288aoj2y5QwtUT1x+4S Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 3/24/26 17:09, Andrew Morton wrote: > On Tue, 24 Mar 2026 09:33:10 +0800 Chunyu Hu wrote: > >> There are several tests requires transprarent hugepages, when run on thp >> disabled kernel such as realtime kernel, there will be false negative. >> Mark those tests as skip when thp is not available. > > Thanks, I updated mm.git's mm-unstable branch to this version. > >> Chagnes in v6: >> - patch 3 add reviewed-by from Lorenzo >> - patch 4 handle the errno before and after close(), suggested by AI > > Here's how v6 altered mm.git: > > > tools/testing/selftests/mm/vm_util.c | 12 ++++++++++-- > 1 file changed, 10 insertions(+), 2 deletions(-) > > --- a/tools/testing/selftests/mm/vm_util.c~b > +++ a/tools/testing/selftests/mm/vm_util.c > @@ -785,15 +785,23 @@ int unpoison_memory(unsigned long pfn) > > void write_file(const char *path, const char *buf, size_t buflen) > { > - int fd; > + int fd, saved_errno; > ssize_t numwritten; Empty line? :) > + if (buflen < 1) > + ksft_exit_fail_msg("Incorrect buffer len: %zu\n", buflen); -- Cheers, David