On Tue, 19 Oct 2021 14:58:36 -0700 Suren Baghdasaryan [off-list ref] 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

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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

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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

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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.