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From: David Hildenbrand <david@redhat.com>
Subject: [PATCH v1 0/5] mm/memory_hotplug: online/offline_pages refactorings
Date: Thu, 16 Aug 2018 12:06:23 +0200
Message-Id: <20180816100628.26428-1-david@redhat.com>
Sender: owner-linux-mm@kvack.org
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To: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>, Michal Hocko <mhocko@suse.com>, Vlastimil Babka <vbabka@suse.cz>, Stephen Rothwell <sfr@canb.auug.org.au>, Pavel Tatashin <pasha.tatashin@oracle.com>, Kemi Wang <kemi.wang@intel.com>, David Rientjes <rientjes@google.com>, Jia He <jia.he@hxt-semitech.com>, Oscar Salvador <osalvador@suse.de>, Petr Tesarik <ptesarik@suse.com>, Andrey Ryabinin <aryabinin@virtuozzo.com>, Dan Williams <dan.j.williams@intel.com>, David Hildenbrand <david@redhat.com>, Mathieu Malaterre <malat@debian.org>, Baoquan He <bhe@redhat.com>, Wei Yang <richard.weiyang@gmail.com>, Ross Zwisler <zwisler@kernel.org>, "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>

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