linux-kernel - [PATCH v3 0/2] drain pcp outside of page isolation

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Date:   Fri,  4 Sep 2020 11:14:46 -0400
From:   Pavel Tatashin <pasha.tatashin@...een.com>
To:     linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
        mhocko@...e.com, linux-mm@...ck.org, pasha.tatashin@...een.com,
        osalvador@...e.de, richard.weiyang@...il.com, david@...hat.com,
        vbabka@...e.cz, rientjes@...gle.com
Subject: [PATCH v3 0/2] drain pcp outside of page isolation

Moved drain_all_pages() from start_isolate_page_range() to users. This
makes it more efficient, symmetric, and solves the race condition.

This is a proposal that I described in Version 1 thread, otherwise no changes
to patch 1.

Version 1:
https://lore.kernel.org/lkml/20200901124615.137200-1-pasha.tatashin@soleen.com

Version 2:
https://lore.kernel.org/lkml/20200903140032.380431-1-pasha.tatashin@soleen.com

Pavel Tatashin (2):
  mm/memory_hotplug: drain per-cpu pages again during memory offline
  mm: drain per-cpu pages outside of isolate_migratepages_range

 mm/memory_hotplug.c |  1 +
 mm/page_alloc.c     |  2 ++
 mm/page_isolation.c | 32 ++++++++++++--------------------
 3 files changed, 15 insertions(+), 20 deletions(-)

-- 
2.25.1