Re: [PATCH v3 0/4] Support user xattrs in cgroupfs

[Chris Down]

Daniel Xu writes:
> User extended attributes are useful as metadata storage for kernfs
> consumers like cgroups. Especially in the case of cgroups, it is useful
> to have a central metadata store that multiple processes/services can
> use to coordinate actions.
>
> A concrete example is for userspace out of memory killers. We want to
> let delegated cgroup subtree owners (running as non-root) to be able to
> say "please avoid killing this cgroup". This is especially important for
> desktop linux as delegated subtrees owners are less likely to run as
> root.
>
> The first two commits set up some stuff for the third commit which
> intro introduce a new flag, KERNFS_ROOT_SUPPORT_USER_XATTR,
> that lets kernfs consumers enable user xattr support. The final commit
> turns on user xattr support for cgroupfs.

The whole series looks good to me, thanks.

For the whole series:

Acked-by: Chris Down <chris@xxxxxxxxxxxxxx>