linux-kernel - Re: [PATCH v9 14/14] mm: multi-gen LRU: design doc

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Date:   Fri, 11 Mar 2022 10:22:45 +0200
From:   Mike Rapoport <rppt@...nel.org>
To:     Yu Zhao <yuzhao@...gle.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Aneesh Kumar <aneesh.kumar@...ux.ibm.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Hillf Danton <hdanton@...a.com>, Jens Axboe <axboe@...nel.dk>,
        Jesse Barnes <jsbarnes@...gle.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Jonathan Corbet <corbet@....net>,
        Matthew Wilcox <willy@...radead.org>,
        Mel Gorman <mgorman@...e.de>,
        Michael Larabel <Michael@...haellarabel.com>,
        Michal Hocko <mhocko@...nel.org>,
        Rik van Riel <riel@...riel.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Will Deacon <will@...nel.org>,
        Ying Huang <ying.huang@...el.com>,
        linux-arm-kernel@...ts.infradead.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        page-reclaim@...gle.com, x86@...nel.org,
        Brian Geffon <bgeffon@...gle.com>,
        Jan Alexander Steffens <heftig@...hlinux.org>,
        Oleksandr Natalenko <oleksandr@...alenko.name>,
        Steven Barrett <steven@...uorix.net>,
        Suleiman Souhlal <suleiman@...gle.com>,
        Daniel Byrne <djbyrne@....edu>,
        Donald Carr <d@...os-reins.com>,
        Holger Hoffstätte 
        <holger@...lied-asynchrony.com>,
        Konstantin Kharlamov <Hi-Angel@...dex.ru>,
        Shuang Zhai <szhai2@...rochester.edu>,
        Sofia Trinh <sofia.trinh@....works>,
        Vaibhav Jain <vaibhav@...ux.ibm.com>
Subject: Re: [PATCH v9 14/14] mm: multi-gen LRU: design doc

On Tue, Mar 08, 2022 at 07:12:31PM -0700, Yu Zhao wrote:
> Add a design doc.
> 
> Signed-off-by: Yu Zhao <yuzhao@...gle.com>
> Acked-by: Brian Geffon <bgeffon@...gle.com>
> Acked-by: Jan Alexander Steffens (heftig) <heftig@...hlinux.org>
> Acked-by: Oleksandr Natalenko <oleksandr@...alenko.name>
> Acked-by: Steven Barrett <steven@...uorix.net>
> Acked-by: Suleiman Souhlal <suleiman@...gle.com>
> Tested-by: Daniel Byrne <djbyrne@....edu>
> Tested-by: Donald Carr <d@...os-reins.com>
> Tested-by: Holger Hoffstätte <holger@...lied-asynchrony.com>
> Tested-by: Konstantin Kharlamov <Hi-Angel@...dex.ru>
> Tested-by: Shuang Zhai <szhai2@...rochester.edu>
> Tested-by: Sofia Trinh <sofia.trinh@....works>
> Tested-by: Vaibhav Jain <vaibhav@...ux.ibm.com>
> ---
>  Documentation/vm/index.rst        |   1 +
>  Documentation/vm/multigen_lru.rst | 156 ++++++++++++++++++++++++++++++
>  2 files changed, 157 insertions(+)
>  create mode 100644 Documentation/vm/multigen_lru.rst
> 
> diff --git a/Documentation/vm/index.rst b/Documentation/vm/index.rst
> index 44365c4574a3..b48434300226 100644
> --- a/Documentation/vm/index.rst
> +++ b/Documentation/vm/index.rst
> @@ -25,6 +25,7 @@ algorithms.  If you are looking for advice on simply allocating memory, see the
>     ksm
>     memory-model
>     mmu_notifier
> +   multigen_lru
>     numa
>     overcommit-accounting
>     page_migration
> diff --git a/Documentation/vm/multigen_lru.rst b/Documentation/vm/multigen_lru.rst
> new file mode 100644
> index 000000000000..cde60de16621
> --- /dev/null
> +++ b/Documentation/vm/multigen_lru.rst
> @@ -0,0 +1,156 @@
> +.. SPDX-License-Identifier: GPL-2.0
> +
> +=============
> +Multi-Gen LRU
> +=============

Here I also miss an introductory paragraph about what Multi-Gen LRU is.

All the rest looks good to me.
> +
> +Design overview
> +===============
> +Objectives
> +----------

-- 
Sincerely yours,
Mike.