linux-kernel - Re: [PATCH v5 1/1] mm: report per-page metadata information

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Message-ID: <CA+CK2bDo6an35R8Nu-d99pbNQMEAw_t0yUm0Q+mJNwOJ1EdqQg@mail.gmail.com>
Date:   Thu, 2 Nov 2023 11:50:05 -0400
From:   Pasha Tatashin <pasha.tatashin@...een.com>
To:     David Hildenbrand <david@...hat.com>
Cc:     Wei Xu <weixugc@...gle.com>, Sourav Panda <souravpanda@...gle.com>,
        corbet@....net, gregkh@...uxfoundation.org, rafael@...nel.org,
        akpm@...ux-foundation.org, mike.kravetz@...cle.com,
        muchun.song@...ux.dev, rppt@...nel.org, rdunlap@...radead.org,
        chenlinxuan@...ontech.com, yang.yang29@....com.cn,
        tomas.mudrunka@...il.com, bhelgaas@...gle.com, ivan@...udflare.com,
        yosryahmed@...gle.com, hannes@...xchg.org, shakeelb@...gle.com,
        kirill.shutemov@...ux.intel.com, wangkefeng.wang@...wei.com,
        adobriyan@...il.com, vbabka@...e.cz, Liam.Howlett@...cle.com,
        surenb@...gle.com, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-mm@...ck.org, willy@...radead.org,
        Greg Thelen <gthelen@...gle.com>
Subject: Re: [PATCH v5 1/1] mm: report per-page metadata information

> > Adding reserved memory to MemTotal is a cleaner approach IMO as well.
> > But it changes the semantics of MemTotal, which may have compatibility
> > issues.
>
> I object.

Could you please elaborate what you object (and why): you object that
it will have compatibility issues, or  you object to include memblock
reserves into MemTotal?

Thanks,
Pasha