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Subject: [PATCH 0/2] [v2] mm/migrate: 5.15 fixes for automatic demotion
To:     linux-kernel@vger.kernel.org
Cc:     linux-mm@kvack.org, Dave Hansen <dave.hansen@linux.intel.com>,
        ying.huang@intel.com, mhocko@suse.com, weixugc@google.com,
        osalvador@suse.de, rientjes@google.com, dan.j.williams@intel.com,
        david@redhat.com, gthelen@google.com, yang.shi@linux.alibaba.com,
        akpm@linux-foundation.org
From:   Dave Hansen <dave.hansen@linux.intel.com>
Date:   Fri, 24 Sep 2021 09:12:51 -0700
Message-Id: <20210924161251.093CCD06@davehans-spike.ostc.intel.com>
Precedence: bulk

Changes from v1:
 * Use memory_notify->status_change_nid to detect node online/offline
   events instead of building a new mechanism.

--

This contains two fixes for the "automatic demotion" code which was
merged into 5.15:

 * Fix memory hotplug performance regression by watching
   suppressing any real action on irrelevant hotplug events.
 * Ensure CPU hotplug handler is registered when memory hotplug
   is disabled.

Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Wei Xu <weixugc@google.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: David Rientjes <rientjes@google.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Cc: Andrew Morton <akpm@linux-foundation.org>