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From: Vlastimil Babka <vbabka@suse.cz>
To: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org, Michal Hocko <mhocko@kernel.org>,
	Pavel Tatashin <pasha.tatashin@soleen.com>,
	David Hildenbrand <david@redhat.com>,
	Oscar Salvador <osalvador@suse.de>,
	Joonsoo Kim <iamjoonsoo.kim@lge.com>,
	Vlastimil Babka <vbabka@suse.cz>
Subject: [RFC 0/5] disable pcplists during page isolation
Date: Mon,  7 Sep 2020 18:36:23 +0200	[thread overview]
Message-ID: <20200907163628.26495-1-vbabka@suse.cz> (raw)

As per the discussions [1] [2] this is an attempt to implement David's
suggestion that page isolation should disable pcplists to avoid races. This is
done without extra checks in fast paths, as I mentioned should be possible in
the discussion, and explained in patch 5. Patches 1-4 are preparatory cleanups.

Note this is untested RFC for now. Based on v5.9-rc4 plus Pavel's patch [2]
(slated as a quick fix for mainline+stable).

[1] https://lore.kernel.org/linux-mm/20200901124615.137200-1-pasha.tatashin@soleen.com/
[2] https://lore.kernel.org/linux-mm/20200903140032.380431-1-pasha.tatashin@soleen.com/

Vlastimil Babka (5):
  mm, page_alloc: clean up pageset high and batch update
  mm, page_alloc: calculate pageset high and batch once per zone
  mm, page_alloc(): remove setup_pageset()
  mm, page_alloc: cache pageset high and batch in struct zone
  mm, page_alloc: disable pcplists during page isolation

 include/linux/gfp.h    |   1 +
 include/linux/mmzone.h |   2 +
 mm/internal.h          |   4 ++
 mm/memory_hotplug.c    |  24 +++----
 mm/page_alloc.c        | 138 ++++++++++++++++++++++-------------------
 mm/page_isolation.c    |  45 +++++++++++---
 6 files changed, 127 insertions(+), 87 deletions(-)

-- 
2.28.0



             reply	other threads:[~2020-09-07 16:36 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-07 16:36 Vlastimil Babka [this message]
2020-09-07 16:36 ` [RFC 1/5] mm, page_alloc: clean up pageset high and batch update Vlastimil Babka
2020-09-10  8:31   ` Oscar Salvador
2020-09-10  8:34     ` Oscar Salvador
2020-09-10 10:47     ` David Hildenbrand
2020-09-17 16:05     ` Vlastimil Babka
2020-09-07 16:36 ` [RFC 2/5] mm, page_alloc: calculate pageset high and batch once per zone Vlastimil Babka
2020-09-10  9:00   ` Oscar Salvador
2020-09-10 10:56   ` David Hildenbrand
2020-09-07 16:36 ` [RFC 3/5] mm, page_alloc(): remove setup_pageset() Vlastimil Babka
2020-09-10  9:23   ` Oscar Salvador
2020-09-10  9:57     ` Oscar Salvador
2020-09-18  9:37     ` Vlastimil Babka
2020-09-10 11:00   ` David Hildenbrand
2020-09-07 16:36 ` [RFC 4/5] mm, page_alloc: cache pageset high and batch in struct zone Vlastimil Babka
2020-09-10 11:30   ` Oscar Salvador
2020-09-18 12:02     ` Vlastimil Babka
2020-09-07 16:36 ` [RFC 5/5] mm, page_alloc: disable pcplists during page isolation Vlastimil Babka
2020-09-09 10:48   ` Vlastimil Babka
2020-09-09 11:36     ` Michal Hocko
2020-09-09 11:44       ` David Hildenbrand
2020-09-09 12:57         ` David Hildenbrand
2020-09-09 11:55       ` Vlastimil Babka
2020-09-10 10:29         ` David Hildenbrand
2020-09-10 11:05           ` Vlastimil Babka
2020-09-10 12:42             ` David Hildenbrand
2020-09-09 12:53       ` Pavel Tatashin
2020-09-08 18:29 ` [RFC 0/5] " David Hildenbrand
2020-09-09 10:54   ` Vlastimil Babka
2020-09-09 11:27     ` osalvador
2020-09-09 11:29       ` David Hildenbrand

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