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SubjectRe: [PATCH v11 2/3] mm: add a field to store names for private anonymous memory
On Mon, Nov 15, 2021 at 9:19 PM Andrew Morton <akpm@linux-foundation.org> wrote:
>
> 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?

The third patch does have this effect.

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

Thanks!

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