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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Mon, 25 Mar 2019 10:28:47 -0000 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x2PASk4n60948666 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 25 Mar 2019 10:28:46 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 678324C04E; Mon, 25 Mar 2019 10:28:46 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id BD0F54C046; Mon, 25 Mar 2019 10:28:45 +0000 (GMT) Received: from [9.145.180.32] (unknown [9.145.180.32]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Mon, 25 Mar 2019 10:28:45 +0000 (GMT) Subject: Re: [PATCH] mm/slab: protect cache_reap() against CPU and memory hot plug operations To: Sasha Levin , linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: stable@vger.kernel.org, Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton References: <20190311191701.24325-1-ldufour@linux.ibm.com> <20190325003841.503582148D@mail.kernel.org> From: Laurent Dufour Date: Mon, 25 Mar 2019 11:28:45 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Thunderbird/60.5.3 MIME-Version: 1.0 In-Reply-To: <20190325003841.503582148D@mail.kernel.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 x-cbid: 19032510-0008-0000-0000-000002D135C5 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19032510-0009-0000-0000-0000223D5CE7 Message-Id: X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-03-25_07:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1903250078 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: Le 25/03/2019 à 01:38, Sasha Levin a écrit : > Hi, > > [This is an automated email] > > This commit has been processed because it contains a -stable tag. > The stable tag indicates that it's relevant for the following trees: all > > The bot has tested the following trees: v5.0.3, v4.19.30, v4.14.107, v4.9.164, v4.4.176, v3.18.136. > > v5.0.3: Build OK! > v4.19.30: Build OK! > v4.14.107: Build OK! > v4.9.164: Build OK! > v4.4.176: Failed to apply! Possible dependencies: > 27590dc17b34 ("hrtimer: Convert to hotplug state machine") > 31487f8328f2 ("smp/cfd: Convert core to hotplug state machine") > 512089d98457 ("perf/x86/intel/rapl: Clean up the printk output") > 55f2890f0726 ("perf/x86/intel/rapl: Add proper error handling") > 57ecde42cc74 ("powerpc/perf: Convert book3s notifier to state machine callbacks") > 6731d4f12315 ("slab: Convert to hotplug state machine") > 6b2c28471de5 ("x86/x2apic: Convert to CPU hotplug state machine") > 7162b8fea630 ("perf/x86/intel/rapl: Refactor the code some more") > 75c7003fbf41 ("perf/x86/intel/rapl: Calculate timing once") > 7ee681b25284 ("workqueue: Convert to state machine callbacks") > 8a6d2f8f73ca ("perf/x86/intel/rapl: Utilize event->pmu_private") > 8b5b773d6245 ("perf/x86/intel/rapl: Convert to hotplug state machine") > 9de8d686955b ("perf/x86/intel/rapl: Convert it to a per package facility") > a208749c6426 ("perf/x86/intel/rapl: Make PMU lock raw") > a409f5ee2937 ("blackfin/perf: Convert hotplug notifier to state machine") > b8b3319a471b ("perf/x86/intel/rapl: Sanitize the quirk handling") > e3cfce17d309 ("sh/perf: Convert the hotplug notifiers to state machine callbacks") > e6d4989a9ad1 ("relayfs: Convert to hotplug state machine") > e722d8daafb9 ("profile: Convert to hotplug state machine") > > v3.18.136: Failed to apply! Possible dependencies: > 13ca62b243f6 ("ACPI: Fix minor syntax issues in processor_core.c") > 27590dc17b34 ("hrtimer: Convert to hotplug state machine") > 31487f8328f2 ("smp/cfd: Convert core to hotplug state machine") > 4daa832d9987 ("x86: Drop bogus __ref / __refdata annotations") > 57ecde42cc74 ("powerpc/perf: Convert book3s notifier to state machine callbacks") > 645523960102 ("perf/x86/intel/rapl: Fix energy counter measurements but supporing per domain energy units") > 6731d4f12315 ("slab: Convert to hotplug state machine") > 6b2c28471de5 ("x86/x2apic: Convert to CPU hotplug state machine") > 7162b8fea630 ("perf/x86/intel/rapl: Refactor the code some more") > 7ee681b25284 ("workqueue: Convert to state machine callbacks") > 828aef376d7a ("ACPI / processor: Introduce phys_cpuid_t for CPU hardware ID") > 8b5b773d6245 ("perf/x86/intel/rapl: Convert to hotplug state machine") > 9de8d686955b ("perf/x86/intel/rapl: Convert it to a per package facility") > a409f5ee2937 ("blackfin/perf: Convert hotplug notifier to state machine") > af8f3f514d19 ("ACPI / processor: Convert apic_id to phys_id to make it arch agnostic") > d02dc27db0dc ("ACPI / processor: Rename acpi_(un)map_lsapic() to acpi_(un)map_cpu()") > d089f8e97d37 ("x86: fix up obsolete cpu function usage.") > e3cfce17d309 ("sh/perf: Convert the hotplug notifiers to state machine callbacks") > e6d4989a9ad1 ("relayfs: Convert to hotplug state machine") > e722d8daafb9 ("profile: Convert to hotplug state machine") > ecf5636dcd59 ("ACPI: Add interfaces to parse IOAPIC ID for IOAPIC hotplug") > fdaf3a6539d6 ("x86: fix more deprecated cpu function usage.") > > > How should we proceed with this patch? Please forget about it. As reported by Michal, this patch is useless. Sorry for the noise. Thanks, Laurent.