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Thu, 12 Mar 2026 12:43:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 55DD1C4CEF7; Thu, 12 Mar 2026 12:43:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773319423; bh=8S9bNJmF6iH82u3xXOAn4AoJikaKrAnFf4WVKPEmGxk=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=eRUBf3dX6tDFd/wdJL0RAiR1hAauissEfjHzMqVRjfgm6+A8cJRjSAe1kA+dx/TfN ufTmt8h43/s25vH+jIPrmSlRHhwv30uARgMBqTfJJ9yaXkPQkHPVqfyY8ppn7whChp frS5QsFEy3F1KNz3/ylj/Cwi+KL7+0iGNFM2Yfr+kCfhPuT6FsDjoSfkZ1qQMntmhj yN1Hb+b3I99HYlAnXrMkjez3roLSMj9i9rD9AB2BP4zwu027cv0ySlc33z8GT+3rNV XARl5ZCnCHUgKcB5kbQa7s429uEUlEap6X6vSpvcQ2GM8OFLLW9JVLEQb9fOpVjodd 7ofK99QQPtwxw== Message-ID: <536527d3-6ffb-409d-a119-93c13a87823d@kernel.org> Date: Thu, 12 Mar 2026 13:43:37 +0100 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 01/13] selftests/mm: restore default nr_hugepages value during cleanup in charge_reserved_hugetlb.sh To: Sayali Patil , Andrew Morton , Shuah Khan , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Ritesh Harjani Cc: Zi Yan , Michal Hocko , Oscar Salvador , Lorenzo Stoakes , Dev Jain , Liam.Howlett@oracle.com, linuxppc-dev@lists.ozlabs.org References: <9d150c91d4fe18732f9a90234e6878b7bd7f61f7.1773305677.git.sayalip@linux.ibm.com> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 3/12/26 13:25, Sayali Patil wrote: > During cleanup, the value of /proc/sys/vm/nr_hugepages is currently being > set to 0. At the end of the test, if all tests pass, the original > nr_hugepages value is restored. However, if any test fails, it remains > set to 0. > With this patch, we ensure that the original nr_hugepages value is > restored during cleanup, regardless of whether the test passes or fails. > > Fixes: 7d695b1c3695b ("selftests/mm: save and restore nr_hugepages value") > Reviewed-by: Zi Yan > Signed-off-by: Sayali Patil > --- > tools/testing/selftests/mm/charge_reserved_hugetlb.sh | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/tools/testing/selftests/mm/charge_reserved_hugetlb.sh b/tools/testing/selftests/mm/charge_reserved_hugetlb.sh > index 447769657634..c9fe68b6fcf9 100755 > --- a/tools/testing/selftests/mm/charge_reserved_hugetlb.sh > +++ b/tools/testing/selftests/mm/charge_reserved_hugetlb.sh > @@ -65,7 +65,7 @@ function cleanup() { > if [[ -e $cgroup_path/hugetlb_cgroup_test2 ]]; then > rmdir $cgroup_path/hugetlb_cgroup_test2 > fi > - echo 0 >/proc/sys/vm/nr_hugepages > + echo "$nr_hugepgs" > /proc/sys/vm/nr_hugepages > echo CLEANUP DONE > } > Reviewed-by: David Hildenbrand (Arm) -- Cheers, David