Re: [PATCH v7 01/10] memcg: enable accounting for mnt_cache entries

[Shakeel Butt]

On Mon, Jul 26, 2021 at 10:33 PM Vasily Averin <vvs@xxxxxxxxxxxxx> wrote:
>
> The kernel allocates ~400 bytes of 'strcut mount' for any new mount.

*struct mount*

> Creating a new mount namespace clones most of the parent mounts,
> and this can be repeated many times. Additionally, each mount allocates
> up to PATH_MAX=4096 bytes for mnt->mnt_devname.
>
> It makes sense to account for these allocations to restrict the host's
> memory consumption from inside the memcg-limited container.
>
> Signed-off-by: Vasily Averin <vvs@xxxxxxxxxxxxx>

Reviewed-by: Shakeel Butt <shakeelb@xxxxxxxxxx>