linux-kernel - [PATCH 0/2] mm: two allocator fixes for 6.15

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Message-ID: <20250416135142.778933-1-hannes@cmpxchg.org>
Date: Wed, 16 Apr 2025 09:45:38 -0400
From: Johannes Weiner <hannes@...xchg.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Vlastimil Babka <vbabka@...e.cz>,
	Brendan Jackman <jackmanb@...gle.com>,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] mm: two allocator fixes for 6.15

Two fixes based on Vlastimil's review of the defrag_mode patches.

#1 fixes a bug that can lead to memory deadlocks on high-CPU-count
machines. This affects not just defrag_mode.

#2 fixes an overreclaim issue when defrag_mode is enabled.

Based on:

  commit 16176182efbf3dfce6dad18dcc8801164329d1c2 (akpm/mm-hotfixes-unstable)
  Author: Uros Bizjak <ubizjak@...il.com>
  Date:   Fri Apr 4 12:24:37 2025 +0200

 include/linux/mmzone.h |  2 --
 mm/page_alloc.c        | 12 ------------
 mm/vmscan.c            | 29 ++++++++++++++++++++++++++---
 3 files changed, 26 insertions(+), 17 deletions(-)