linux-kernel - [PATCH v2 0/2] mm: Memory offlining + page isolation cleanups

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Message-Id: <20191021172353.3056-1-david@redhat.com>
Date:   Mon, 21 Oct 2019 19:23:51 +0200
From:   David Hildenbrand <david@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     linux-mm@...ck.org, David Hildenbrand <david@...hat.com>,
        Alexander Duyck <alexander.h.duyck@...ux.intel.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Anshuman Khandual <anshuman.khandual@....com>,
        Dan Williams <dan.j.williams@...el.com>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Michal Hocko <mhocko@...e.com>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>,
        Oscar Salvador <osalvador@...e.de>,
        Pavel Tatashin <pasha.tatashin@...een.com>,
        Pavel Tatashin <pavel.tatashin@...rosoft.com>,
        Pingfan Liu <kernelfans@...il.com>, Qian Cai <cai@....pw>,
        Vlastimil Babka <vbabka@...e.cz>,
        Wei Yang <richard.weiyang@...il.com>
Subject: [PATCH v2 0/2] mm: Memory offlining + page isolation cleanups

Two cleanups that popped up while working on (and discussing) virtio-mem:
 https://lkml.org/lkml/2019/9/19/463

Tested with DIMMs on x86.

As discussed with michal in v1, I'll soon look into removing the use
of PG_reserved during memory onlining completely - most probably
disallowing to offline memory blocks with holes, cleaning up the
onlining+offlining code.

v1 -> v2:
- "mm/page_alloc.c: Don't set pages PageReserved() when offlining"
-- Fixup one comment
- "mm/page_isolation.c: Convert SKIP_HWPOISON to MEMORY_OFFLINE"
-- Use parenthesis around checks
- Added ACKs

David Hildenbrand (2):
  mm/page_alloc.c: Don't set pages PageReserved() when offlining
  mm/page_isolation.c: Convert SKIP_HWPOISON to MEMORY_OFFLINE

 include/linux/page-isolation.h |  4 ++--
 mm/memory_hotplug.c            | 12 ++++++------
 mm/page_alloc.c                |  9 +++------
 mm/page_isolation.c            | 12 ++++++------
 4 files changed, 17 insertions(+), 20 deletions(-)

-- 
2.21.0