Re: [PATCH 0/2] Fix memcg/memory.high in case kmem accounting is enabled

On Mon, 31 Aug 2015, Vladimir Davydov wrote:

I totally agree that we should strive to make a kmem user feel roughly
the same in memcg as if it were running on a host with equal amount of
RAM. There are two ways to achieve that:

 1. Make the API functions, i.e. kmalloc and friends, behave inside
    memcg roughly the same way as they do in the root cgroup.
 2. Make the internal memcg functions, i.e. try_charge and friends,
    behave roughly the same way as alloc_pages.

I find way 1 more flexible, because we don't have to blindly follow
heuristics used on global memory reclaim and therefore have more
opportunities to achieve the same goal.

The heuristics need to integrate well if its in a cgroup or not. In
general make use of cgroups as transparent as possible to the rest of the
code.

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