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
