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    Subject[PATCH v1 0/5] mm/memory_hotplug: online/offline_pages refactorings
    Date
    While looking into onlining/offlining of subsections, I noticed that
    online/offlining code can in its current form only deal with whole sections
    and that onlining/offlining of sections that are already online/offline is
    problematic. So let's add some additional checks (that also serve as
    implicit documentation) and do some cleanups.

    David Hildenbrand (5):
    mm/memory_hotplug: drop intermediate __offline_pages
    mm/memory_hotplug: enforce section alignment when onlining/offlining
    mm/memory_hotplug: check if sections are already online/offline
    mm/memory_hotplug: onlining pages can only fail due to notifiers
    mm/memory_hotplug: print only with DEBUG_VM in online/offline_pages()

    include/linux/mmzone.h | 2 ++
    mm/memory_hotplug.c | 43 ++++++++++++++++++++++--------------------
    mm/sparse.c | 28 +++++++++++++++++++++++++++
    3 files changed, 53 insertions(+), 20 deletions(-)

    --
    2.17.1

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