Re: [PATCH 0/5] memcg/kmem: switch to white list policy

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Hello, Vladmir.

On Mon, Nov 09, 2015 at 10:27:47PM +0300, Vladimir Davydov wrote:
> Of course, we could rework slab merging so that kmem_cache_create
> returned a new dummy cache even if it was actually merged. Such a cache
> would point to the real cache, which would be used for allocations. This
> wouldn't limit slab merging, but this would add one more dereference to
> alloc path, which is even worse.

Hmmm, this could be me not really understanding but why can't we let
all slabs to be merged regardless of SLAB_ACCOUNT flag for root memcg
and point to per-memcg slabs (may be merged among them but most likely
won't matter) for !root.  We're indirecting once anyway, no?

Thanks.

-- 
tejun
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