linux-kernel - [PATCH v3 0/3] page_owner: Fix refcount imbalance

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Date: Tue, 26 Mar 2024 07:30:33 +0100
From: Oscar Salvador <osalvador@...e.de>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org,
	linux-mm@...ck.org,
	Michal Hocko <mhocko@...e.com>,
	Vlastimil Babka <vbabka@...e.cz>,
	Marco Elver <elver@...gle.com>,
	Andrey Konovalov <andreyknvl@...il.com>,
	Alexander Potapenko <glider@...gle.com>,
	Oscar Salvador <osalvador@...e.de>
Subject: [PATCH v3 0/3] page_owner: Fix refcount imbalance

This series consists of a refactoring/correctness of updating the metadata
of tail pages and a couple of fixups for the refcounting part.

>From this series on, instead of counting the stacks, we count the outstanding
nr_base_pages each stack has, which gives us a much better memory overview.
The other fixup is for the migration part.

A more detailed explanation can be found in the changelog of the respective
patches.

Oscar Salvador (3):
  mm,page_owner: Update metada for tail pages
  mm,page_owner: Fix refcount imbalance
  mm,page_owner: Fix accounting of pages when migrating

 Documentation/mm/page_owner.rst |  73 +++++++------
 mm/page_owner.c                 | 184 +++++++++++++++++++-------------
 2 files changed, 146 insertions(+), 111 deletions(-)

-- 
2.44.0