linux-kernel - Re: [PATCH v4 0/4] page_owner: Fix refcount imbalance and print fixup

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Date: Tue, 9 Apr 2024 21:32:14 +0800
From: Kefeng Wang <wangkefeng.wang@...wei.com>
To: Oscar Salvador <osalvador@...e.de>, 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>, Alexandre Ghiti <alexghiti@...osinc.com>
Subject: Re: [PATCH v4 0/4] page_owner: Fix refcount imbalance and print fixup



On 2024/4/4 15:06, Oscar Salvador wrote:
> This series consists of a refactoring/correctness of updating the metadata
> of tail pages, a couple of fixups for the refcounting part and a fixup for
> the stack_start() function.
> 
>>>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.

I think this also should be merged into 6.9-rc1 asap, it is easy to 
occur when migration.

Tested-by: Kefeng Wang <wangkefeng.wang@...wei.com>

> 
> v3 -> v4:
>   - Fix some typos remarked by Vlastimil
>   - Add Reviewed-by tag from Vlastimil and Tested-by tag from Alexandre Ghiti
>     (closed a syzbot report for RISC)
> 
> Oscar Salvador (4):
>    mm,page_owner: Update metadata for tail pages
>    mm,page_owner: Fix refcount imbalance
>    mm,page_owner: Fix accounting of pages when migrating
>    mm,page_owner: Fix printing of stack records
> 
>   Documentation/mm/page_owner.rst |  73 +++++++------
>   mm/page_owner.c                 | 188 ++++++++++++++++++--------------
>   2 files changed, 147 insertions(+), 114 deletions(-)
>