linux-kernel - [PATCH v1 00/26] Eliminate Dying Memory Cgroup

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Message-ID: <cover.1761658310.git.zhengqi.arch@bytedance.com>
Date: Tue, 28 Oct 2025 21:58:13 +0800
From: Qi Zheng <qi.zheng@...ux.dev>
To: hannes@...xchg.org,
	hughd@...gle.com,
	mhocko@...e.com,
	roman.gushchin@...ux.dev,
	shakeel.butt@...ux.dev,
	muchun.song@...ux.dev,
	david@...hat.com,
	lorenzo.stoakes@...cle.com,
	ziy@...dia.com,
	harry.yoo@...cle.com,
	imran.f.khan@...cle.com,
	kamalesh.babulal@...cle.com,
	axelrasmussen@...gle.com,
	yuanchu@...gle.com,
	weixugc@...gle.com,
	akpm@...ux-foundation.org
Cc: linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	cgroups@...r.kernel.org,
	Qi Zheng <zhengqi.arch@...edance.com>
Subject: [PATCH v1 00/26] Eliminate Dying Memory Cgroup

From: Qi Zheng <zhengqi.arch@...edance.com>

Hi all,

This series aims to eliminate the problem of dying memory cgroup. It completes
the adaptation to the MGLRU scenarios based on the Muchun Song's patchset[1].

The adaptation method was discussed with Harry Yoo. For more details, please
refer to the commit message of [PATCH v1 23/26].

The changes are as follows:
 - drop [PATCH RFC 02/28]
 - drop THP split queue related part, which has been merged as a separate
   patchset[2]
 - prevent memory cgroup release in folio_split_queue_lock{_irqsave}() in
   [PATCH v1 16/26]
 - Separate the reparenting function of traditional LRU folios to [PATCH v1 22/26]
 - adapted to the MGLRU scenarios in [PATCH v1 23/26]
 - refactor memcg_reparent_objcgs() in [PATCH v1 24/26]
 - collect Acked-bys and Reviewed-bys
 - rebase onto the next-20251028

Comments and suggestions are welcome!

Thanks,
Qi

[1]. https://lore.kernel.org/all/20250415024532.26632-1-songmuchun@bytedance.com/
[2]. https://lore.kernel.org/all/cover.1760509767.git.zhengqi.arch@bytedance.com

Muchun Song (22):
  mm: memcontrol: remove dead code of checking parent memory cgroup
  mm: workingset: use folio_lruvec() in workingset_refault()
  mm: rename unlock_page_lruvec_irq and its variants
  mm: vmscan: refactor move_folios_to_lru()
  mm: memcontrol: allocate object cgroup for non-kmem case
  mm: memcontrol: return root object cgroup for root memory cgroup
  mm: memcontrol: prevent memory cgroup release in
    get_mem_cgroup_from_folio()
  buffer: prevent memory cgroup release in folio_alloc_buffers()
  writeback: prevent memory cgroup release in writeback module
  mm: memcontrol: prevent memory cgroup release in
    count_memcg_folio_events()
  mm: page_io: prevent memory cgroup release in page_io module
  mm: migrate: prevent memory cgroup release in folio_migrate_mapping()
  mm: mglru: prevent memory cgroup release in mglru
  mm: memcontrol: prevent memory cgroup release in
    mem_cgroup_swap_full()
  mm: workingset: prevent memory cgroup release in lru_gen_eviction()
  mm: workingset: prevent lruvec release in workingset_refault()
  mm: zswap: prevent lruvec release in zswap_folio_swapin()
  mm: swap: prevent lruvec release in swap module
  mm: workingset: prevent lruvec release in workingset_activation()
  mm: memcontrol: prepare for reparenting LRU pages for lruvec lock
  mm: memcontrol: eliminate the problem of dying memory cgroup for LRU
    folios
  mm: lru: add VM_WARN_ON_ONCE_FOLIO to lru maintenance helpers

Qi Zheng (4):
  mm: thp: prevent memory cgroup release in
    folio_split_queue_lock{_irqsave}()
  mm: vmscan: prepare for reparenting traditional LRU folios
  mm: vmscan: prepare for reparenting MGLRU folios
  mm: memcontrol: refactor memcg_reparent_objcgs()

 fs/buffer.c                      |   4 +-
 fs/fs-writeback.c                |  22 +-
 include/linux/memcontrol.h       | 159 ++++++------
 include/linux/mm_inline.h        |   6 +
 include/linux/mmzone.h           |  20 ++
 include/trace/events/writeback.h |   3 +
 mm/compaction.c                  |  43 +++-
 mm/huge_memory.c                 |  18 +-
 mm/memcontrol-v1.c               |  15 +-
 mm/memcontrol.c                  | 405 ++++++++++++++++++-------------
 mm/migrate.c                     |   2 +
 mm/mlock.c                       |   2 +-
 mm/page_io.c                     |   8 +-
 mm/percpu.c                      |   2 +-
 mm/shrinker.c                    |   6 +-
 mm/swap.c                        |  20 +-
 mm/vmscan.c                      | 198 ++++++++++++---
 mm/workingset.c                  |  26 +-
 mm/zswap.c                       |   2 +
 19 files changed, 612 insertions(+), 349 deletions(-)

-- 
2.20.1