Regarding the first patch: The actual hard work of removing the lock was done by Oscar, but I have set myself as author for fear of saying something stupid in the commit message that would then be attributed to him... Not sure what the best practice is there, please feel free to reset the authorhip to him (or I can send a v2) if that's preferred. Signed-off-by: Brendan Jackman <jackmanb@xxxxxxxxxx> --- Brendan Jackman (2): mm,memory_hotplug: Remove un-taken lock mm,memory_hotplug: {READ,WRITE}_ONCE unsynchronized zone data include/linux/memory_hotplug.h | 35 ----------------------------------- include/linux/mmzone.h | 37 +++++++++++++++---------------------- mm/compaction.c | 2 +- mm/memory_hotplug.c | 20 ++++++++++++-------- mm/mm_init.c | 3 +-- mm/page_alloc.c | 12 ++++-------- mm/show_mem.c | 8 ++++---- mm/vmstat.c | 4 ++-- 8 files changed, 39 insertions(+), 82 deletions(-) --- base-commit: 8f6a15f095a63a83b096d9b29aaff4f0fbe6f6e6 change-id: 20240521-mm-hotplug-sync-310ebbf34062 Best regards, -- Brendan Jackman <jackmanb@xxxxxxxxxx>