From: Shakeel Butt <shakeel.butt@linux.dev>
To: Qi Zheng <qi.zheng@linux.dev>
Cc: hannes@cmpxchg.org, hughd@google.com, mhocko@suse.com,
roman.gushchin@linux.dev, muchun.song@linux.dev,
david@kernel.org, lorenzo.stoakes@oracle.com, ziy@nvidia.com,
harry.yoo@oracle.com, yosry.ahmed@linux.dev,
imran.f.khan@oracle.com, kamalesh.babulal@oracle.com,
axelrasmussen@google.com, yuanchu@google.com,
weixugc@google.com, chenridong@huaweicloud.com, mkoutny@suse.com,
akpm@linux-foundation.org, hamzamahfooz@linux.microsoft.com,
apais@linux.microsoft.com, lance.yang@linux.dev, bhe@redhat.com,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
cgroups@vger.kernel.org, Qi Zheng <zhengqi.arch@bytedance.com>
Subject: Re: [PATCH v4 25/31] mm: vmscan: prepare for reparenting traditional LRU folios
Date: Fri, 6 Feb 2026 17:28:26 -0800 [thread overview]
Message-ID: <aYaVIzw6cVUO72A5@linux.dev> (raw)
In-Reply-To: <26efe2997261631c951d326bef6a20fe0796c43c.1770279888.git.zhengqi.arch@bytedance.com>
On Thu, Feb 05, 2026 at 05:01:44PM +0800, Qi Zheng wrote:
> From: Qi Zheng <zhengqi.arch@bytedance.com>
>
> To resolve the dying memcg issue, we need to reparent LRU folios of child
> memcg to its parent memcg. For traditional LRU list, each lruvec of every
> memcg comprises four LRU lists. Due to the symmetry of the LRU lists, it
> is feasible to transfer the LRU lists from a memcg to its parent memcg
> during the reparenting process.
>
> This commit implements the specific function, which will be used during
> the reparenting process.
>
> Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
> Reviewed-by: Harry Yoo <harry.yoo@oracle.com>
> Acked-by: Johannes Weiner <hannes@cmpxchg.org>
> Acked-by: Muchun Song <muchun.song@linux.dev>
Acked-by: Shakeel Butt <shakeel.butt@linux.dev>
next prev parent reply other threads:[~2026-02-07 1:28 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-05 8:54 [PATCH v4 00/31] Eliminate Dying Memory Cgroup Qi Zheng
2026-02-05 8:54 ` [PATCH v4 01/31] mm: memcontrol: remove dead code of checking parent memory cgroup Qi Zheng
2026-02-05 8:54 ` [PATCH v4 02/31] mm: workingset: use folio_lruvec() in workingset_refault() Qi Zheng
2026-02-05 8:54 ` [PATCH v4 03/31] mm: rename unlock_page_lruvec_irq and its variants Qi Zheng
2026-02-05 8:54 ` [PATCH v4 04/31] mm: vmscan: prepare for the refactoring the move_folios_to_lru() Qi Zheng
2026-02-05 8:54 ` [PATCH v4 05/31] mm: vmscan: refactor move_folios_to_lru() Qi Zheng
2026-02-05 8:54 ` [PATCH v4 06/31] mm: memcontrol: allocate object cgroup for non-kmem case Qi Zheng
2026-02-05 8:54 ` [PATCH v4 07/31] mm: memcontrol: return root object cgroup for root memory cgroup Qi Zheng
2026-02-05 9:01 ` [PATCH v4 08/31] mm: memcontrol: prevent memory cgroup release in get_mem_cgroup_from_folio() Qi Zheng
2026-02-05 9:01 ` [PATCH v4 09/31] buffer: prevent memory cgroup release in folio_alloc_buffers() Qi Zheng
2026-02-05 9:01 ` [PATCH v4 10/31] writeback: prevent memory cgroup release in writeback module Qi Zheng
2026-02-05 9:01 ` [PATCH v4 11/31] mm: memcontrol: prevent memory cgroup release in count_memcg_folio_events() Qi Zheng
2026-02-05 9:01 ` [PATCH v4 12/31] mm: page_io: prevent memory cgroup release in page_io module Qi Zheng
2026-02-05 9:01 ` [PATCH v4 13/31] mm: migrate: prevent memory cgroup release in folio_migrate_mapping() Qi Zheng
2026-02-05 9:01 ` [PATCH v4 14/31] mm: mglru: prevent memory cgroup release in mglru Qi Zheng
2026-02-05 9:01 ` [PATCH v4 15/31] mm: memcontrol: prevent memory cgroup release in mem_cgroup_swap_full() Qi Zheng
2026-02-05 9:01 ` [PATCH v4 16/31] mm: workingset: prevent memory cgroup release in lru_gen_eviction() Qi Zheng
2026-02-05 9:01 ` [PATCH v4 17/31] mm: thp: prevent memory cgroup release in folio_split_queue_lock{_irqsave}() Qi Zheng
2026-02-05 9:01 ` [PATCH v4 18/31] mm: zswap: prevent memory cgroup release in zswap_compress() Qi Zheng
2026-02-05 9:01 ` [PATCH v4 19/31] mm: workingset: prevent lruvec release in workingset_refault() Qi Zheng
2026-02-05 9:01 ` [PATCH v4 20/31] mm: zswap: prevent lruvec release in zswap_folio_swapin() Qi Zheng
2026-02-05 9:01 ` [PATCH v4 21/31] mm: swap: prevent lruvec release in lru_gen_clear_refs() Qi Zheng
2026-02-05 9:01 ` [PATCH v4 22/31] mm: workingset: prevent lruvec release in workingset_activation() Qi Zheng
2026-02-05 9:01 ` [PATCH v4 23/31] mm: do not open-code lruvec lock Qi Zheng
2026-02-05 9:01 ` [PATCH v4 24/31] mm: memcontrol: prepare for reparenting LRU pages for " Qi Zheng
2026-02-05 15:02 ` kernel test robot
2026-02-05 15:02 ` kernel test robot
2026-02-06 6:13 ` Qi Zheng
2026-02-06 23:34 ` Shakeel Butt
2026-02-05 9:01 ` [PATCH v4 25/31] mm: vmscan: prepare for reparenting traditional LRU folios Qi Zheng
2026-02-07 1:28 ` Shakeel Butt [this message]
2026-02-05 9:01 ` [PATCH v4 26/31] mm: vmscan: prepare for reparenting MGLRU folios Qi Zheng
2026-02-12 8:46 ` Harry Yoo
2026-02-15 7:28 ` Qi Zheng
2026-02-05 9:01 ` [PATCH v4 27/31] mm: memcontrol: refactor memcg_reparent_objcgs() Qi Zheng
2026-02-05 9:01 ` [PATCH v4 28/31] mm: workingset: use lruvec_lru_size() to get the number of lru pages Qi Zheng
2026-02-07 1:48 ` Shakeel Butt
2026-02-07 3:59 ` Muchun Song
2026-02-05 9:01 ` [PATCH v4 29/31] mm: memcontrol: prepare for reparenting non-hierarchical stats Qi Zheng
2026-02-07 2:19 ` Shakeel Butt
2026-02-10 6:47 ` Qi Zheng
2026-02-11 0:38 ` Shakeel Butt
2026-02-05 9:01 ` [PATCH v4 30/31] mm: memcontrol: eliminate the problem of dying memory cgroup for LRU folios Qi Zheng
2026-02-07 19:59 ` Usama Arif
2026-02-07 22:25 ` Shakeel Butt
2026-02-09 3:49 ` Qi Zheng
2026-02-09 17:53 ` Shakeel Butt
2026-02-10 3:11 ` Qi Zheng
2026-02-05 9:01 ` [PATCH v4 31/31] mm: lru: add VM_WARN_ON_ONCE_FOLIO to lru maintenance helpers Qi Zheng
2026-02-07 22:26 ` Shakeel Butt
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