Re: [PATCH v11 2/3] mm: add a field to store names for private anonymous memory

[Andrew Morton]

On Tue, 19 Oct 2021 14:58:36 -0700 Suren Baghdasaryan <surenb@xxxxxxxxxx> 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.