linux-kernel - Re: [PATCH -mm 1/3] slub: don't fail kmem_cache_shrink if slab placement optimization fails

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Message-ID: <alpine.DEB.2.11.1501261353020.16786@gentwo.org>
Date:	Mon, 26 Jan 2015 13:53:32 -0600 (CST)
From:	Christoph Lameter <cl@...ux.com>
To:	Vladimir Davydov <vdavydov@...allels.com>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...e.cz>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH -mm 1/3] slub: don't fail kmem_cache_shrink if slab
 placement optimization fails

On Mon, 26 Jan 2015, Vladimir Davydov wrote:

> We could do that, but IMO that would only complicate the code w/o
> yielding any real benefits. This function is slow and called rarely
> anyway, so I don't think there is any point to optimize out a page
> allocation here.

I think you already have the code there. Simply allow the sizeing of the
empty_page[] array. And rename it.

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