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Date:   Mon, 15 Nov 2021 21:19:05 -0800
From:   Andrew Morton <akpm@linux-foundation.org>
To:     Suren Baghdasaryan <surenb@google.com>
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Subject: Re: [PATCH v11 2/3] mm: add a field to store names for private
 anonymous memory
Message-Id: <20211115211905.faef6f9db3ce4a6fb9ed66a2@linux-foundation.org>
In-Reply-To: <CAJuCfpGG-j00eDL8p3vNDh4ye2Ja4untoA20UdTkTubm3AfMEQ@mail.gmail.com>
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        <20211019215511.3771969-2-surenb@google.com>
        <CAJuCfpGG-j00eDL8p3vNDh4ye2Ja4untoA20UdTkTubm3AfMEQ@mail.gmail.com>
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On Tue, 19 Oct 2021 14:58:36 -0700 Suren Baghdasaryan <surenb@google.com> wrote:

> As Andrew suggested, I checked the image sizes with allnoconfig builds:
> 
> unpatched Linus' ToT
>    text    data     bss     dec     hex filename
> 1324759      32   73928 1398719 1557bf vmlinux
> 
> After the first patch is applied (madvise refactoring)
>    text    data     bss     dec     hex filename
> 1322346      32   73928 1396306 154e52 vmlinux
> >>> 2413 bytes decrease vs ToT <<<
> 
> After all patches applied with CONFIG_ANON_VMA_NAME=n
>    text    data     bss     dec     hex filename
> 1322337      32   73928 1396297 154e49 vmlinux
> >>> 2422 bytes decrease vs ToT <<<
> 
> After all patches applied with CONFIG_ANON_VMA_NAME=y
>    text    data     bss     dec     hex filename
> 1325228      32   73928 1399188 155994 vmlinux
> >>> 469 bytes increase vs ToT <<<

Nice.  Presumably there are memory savings from no longer duplicating
the vma names?

I fudged up a [0/n] changelog (please don't forget this) and merged it
all for testing.