Re: [PATCH -mm 5/8] slab: remove kmem_cache_shrink retval

From: Christoph Lameter
Date: Tue Jun 03 2014 - 10:48:59 EST

On Tue, 3 Jun 2014, Vladimir Davydov wrote:

> Still, I really want to evict all empty slabs from cache on memcg
> offline for sure. Handling failures there means introducing a worker
> that will retry shrinking, but that seems to me as an unnecessary
> complication, because there's nothing that can prevent us from shrinking
> empty slabs from the cache, even if we merge slab defragmentation, isn't
> it?
> May be, it's worth introducing a special function, say kmem_cache_zap(),
> that will only evict empty slabs from the cache, plus disable empty
> slabs caching? This function would be called only from memcg offline for
> dead memcg caches.

I am fine with the lower impact version that you came up with later.

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