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Tue, 10 Mar 2026 09:50:30 +0000 (GMT) From: Sayali Patil To: Andrew Morton , Shuah Khan , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Ritesh Harjani Cc: David Hildenbrand , Zi Yan , Michal Hocko , Oscar Salvador , Lorenzo Stoakes , Dev Jain , Muhammad Usama Anjum , Liam.Howlett@oracle.com, Sayali Patil Subject: [PATCH 01/13] selftests/mm: restore default nr_hugepages value during cleanup in charge_reserved_hugetlb.sh Date: Tue, 10 Mar 2026 15:19:19 +0530 Message-ID: X-Mailer: git-send-email 2.52.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-GUID: 4WpWe8PCgu63lWRoOf0rVFa5-vg3lGuT X-Authority-Analysis: v=2.4 cv=Hp172kTS c=1 sm=1 tr=0 ts=69afe96d cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=Yq5XynenixoA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=VnNF1IyMAAAA:8 a=BQN3rKDzEokXj-ItFMoA:9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzEwMDA4MSBTYWx0ZWRfX81dX/sCLlI++ BPg2k8Ms2lTcZQ4PlZiBgWyZmdi+0Y98DtSSoylm8wza+VE5U6pPmUtTmOBwGaRCWnwFlZ7CbfA W4Yakj6ACeMSnUccVAQ44orG1UqPxNpMxL8SYE1xp+BVCyvYXwO7T+gxmnKJZrB514C5Snv+d5v CTI5znqOYKLCxQkArBgcPsiQ1wcSGHjmln+Q46O+ympYvoXTc3nnblQ858petNNyT67E/21yJNW S/Ufe6/0RodfrNBXvLhnR6bgy3bb6d3itzHFDV8LDbmsHMJzNoLWZDF3/KO2NKtuhFouAvsHZq/ 5nLmKViGqWGXKluQpwkNM1I27dvOaKuMTGaKz/3KOAvy/5kh3wvciJp5HjVYBI3kCR+CvnDdzMR l3/9j1PKAAz3TEoQMMg2Vik1v5Ra9D2HfOq+amELKeLEIBbd4PdtJ85lfz8UNWh/03wHZhPjBWg 9aWrOaEg7enpHHo/HgQ== X-Proofpoint-ORIG-GUID: ZYu47pYo16JodI_J1nrpuHJ2UWNfhrDv X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-10_01,2026-03-09_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 adultscore=0 malwarescore=0 impostorscore=0 suspectscore=0 spamscore=0 phishscore=0 clxscore=1015 priorityscore=1501 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603100081 Content-Type: text/plain; charset="utf-8" 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") Signed-off-by: Sayali Patil Reviewed-by: Zi Yan --- 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 } =20 --=20 2.52.0