Re: [PATCH -mm v2 1/3] slub: never fail to shrink cache

[Christoph Lameter]

On Wed, 28 Jan 2015, Vladimir Davydov wrote:

> This patch therefore makes __kmem_cache_shrink() allocate the array on
> stack instead of calling kmalloc, which may fail. The array size is
> chosen to be equal to 32, because most SLUB caches store not more than
> 32 objects per slab page. Slab pages with <= 32 free objects are sorted
> using the array by the number of objects in use and promoted to the head
> of the partial list, while slab pages with > 32 free objects are left in
> the end of the list without any ordering imposed on them.

Acked-by: Christoph Lameter <cl@xxxxxxxxx>
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