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SubjectRe: [PATCH REPOST RFC cgroup/for-3.7] cgroup: mark subsystems with broken hierarchy support and whine if cgroups are nested for them
Hello, Daniel.

On Thu, Sep 13, 2012 at 01:16:29PM +0100, Daniel P. Berrange wrote:
> If you want application developers / users to understand this, then
> you really need to update the Documentation/cgroups/cgroups.txt file
> to provide suitable recommendations on use of hierarchies. As it
> stands today it arguably encourages apps to make use of arbitrary
> hierarchies. While some of the other docs (blkio-controller.txt) do
> describe the limitations of their implementation, they don't ever
> go as far as recommending against usage of hierarchies, which is
> what you seem to be saying.
> Just printing warning messages in the logs with no docs to explain
> the issues which cause the warnings is not friendly to users, and
> IMHO will just lead people to ignore the warnings.

Oh yeah, we definitely need to update the docs. No doubt about it.
Will do.



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