Re: [PATCH 1/2] mm: update the memmap stat before page is freed

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To: Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>, agordeev@xxxxxxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, alexghiti@xxxxxxxxxxxx, aou@xxxxxxxxxxxxxxxxx, ardb@xxxxxxxxxx, arnd@xxxxxxxx, bhe@xxxxxxxxxx, bjorn@xxxxxxxxxxxx, borntraeger@xxxxxxxxxxxxx, bp@xxxxxxxxx, catalin.marinas@xxxxxxx, chenhuacai@xxxxxxxxxx, chenjiahao16@xxxxxxxxxx, christophe.leroy@xxxxxxxxxx, dave.hansen@xxxxxxxxxxxxxxx, dawei.li@xxxxxxxxxxxx, gerald.schaefer@xxxxxxxxxxxxx, gor@xxxxxxxxxxxxx, hca@xxxxxxxxxxxxx, hpa@xxxxxxxxx, kent.overstreet@xxxxxxxxx, kernel@xxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, linux-riscv@xxxxxxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, loongarch@xxxxxxxxxxxxxxx, luto@xxxxxxxxxx, maobibo@xxxxxxxxxxx, mark.rutland@xxxxxxx, mcgrof@xxxxxxxxxx, mingo@xxxxxxxxxx, mpe@xxxxxxxxxxxxxx, muchun.song@xxxxxxxxx, namcao@xxxxxxxxxxxxx, naveen@xxxxxxxxxx, npiggin@xxxxxxxxx, osalvador@xxxxxxx, palmer@xxxxxxxxxxx, paul.walmsley@xxxxxxxxxx, peterz@xxxxxxxxxxxxx, philmd@xxxxxxxxxx, rdunlap@xxxxxxxxxxxxx, rientjes@xxxxxxxxxx, rppt@xxxxxxxxxx, ryan.roberts@xxxxxxx, souravpanda@xxxxxxxxxx, svens@xxxxxxxxxxxxx, tglx@xxxxxxxxxxxxx, tzimmermann@xxxxxxx, will@xxxxxxxxxx, x86@xxxxxxxxxx
Subject: Re: [PATCH 1/2] mm: update the memmap stat before page is freed
From: David Hildenbrand <david@xxxxxxxxxx>
Date: Wed, 7 Aug 2024 13:24:57 +0200
In-reply-to: <20240806221454.1971755-1-pasha.tatashin@soleen.com>
Organization: Red Hat
References: <20240806221454.1971755-1-pasha.tatashin@soleen.com>
User-agent: Mozilla Thunderbird

On 07.08.24 00:14, Pasha Tatashin wrote:

It is more logical to update the stat before the page is freed, to avoid
use after free scenarios.

Fixes: 15995a352474 ("mm: report per-page metadata information")
Signed-off-by: Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>
---


Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>

--
Cheers,

David / dhildenb

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- [PATCH 1/2] mm: update the memmap stat before page is freed
  - From: Pasha Tatashin

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