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SubjectRe: [PATCH] mm/slab: protect cache_reap() against CPU and memory hot plug operations
From
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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.

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