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

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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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