From: Akinobu Mita <akinobu.mita@gmail.com>
To: akinobu.mita@gmail.com
Cc: linux-cxl@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, akpm@linux-foundation.org,
axelrasmussen@google.com, yuanchu@google.com, weixugc@google.com,
hannes@cmpxchg.org, david@kernel.org, mhocko@kernel.org,
zhengqi.arch@bytedance.com, shakeel.butt@linux.dev,
lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com,
vbabka@suse.cz, rppt@kernel.org, surenb@google.com
Subject: [PATCH 0/2] mm: fix oom-killer not being invoked when demotion is enabled
Date: Mon, 8 Dec 2025 18:40:26 +0900 [thread overview]
Message-ID: <20251208094028.214949-1-akinobu.mita@gmail.com> (raw)
On systems with multiple memory-tiers consisting of DRAM and CXL memory,
the OOM killer is not invoked properly.
This patchset includes a fix for the issue and an enhancement that makes
the issue reproducible with numa emulation.
Link: https://lore.kernel.org/lkml/20251022135735.246203-1-akinobu.mita@gmail.com/
Akinobu Mita (2):
mm: memory-tiers, numa_emu: enable to create memory tiers using fake
numa nodes
mm/vmscan: don't demote if there is not enough free memory in the
lower memory tier
mm/numa_emulation.c | 26 ++++++++++++++++++++++++++
mm/vmscan.c | 15 ++++++++++++++-
2 files changed, 40 insertions(+), 1 deletion(-)
--
2.43.0
next reply other threads:[~2025-12-08 9:41 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-08 9:40 Akinobu Mita [this message]
2025-12-08 9:40 ` [PATCH 1/2] mm: memory-tiers, numa_emu: enable to create memory tiers using fake numa nodes Akinobu Mita
2025-12-16 20:24 ` Andrew Morton
2025-12-17 13:55 ` Akinobu Mita
2025-12-08 9:40 ` [PATCH 2/2] mm/vmscan: don't demote if there is not enough free memory in the lower memory tier Akinobu Mita
2025-12-17 12:55 ` Vlastimil Babka
2025-12-17 14:30 ` Akinobu Mita
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